diff --git a/core/lib/Drupal/Component/Annotation/Plugin/Discovery/AnnotatedClassDiscovery.php b/core/lib/Drupal/Component/Annotation/Plugin/Discovery/AnnotatedClassDiscovery.php
index b350ac02293e63e03deb6b40aa702b2f460ab4d8..000c337db243b138d2647352f7f2ba7bc6e3717b 100644
--- a/core/lib/Drupal/Component/Annotation/Plugin/Discovery/AnnotatedClassDiscovery.php
+++ b/core/lib/Drupal/Component/Annotation/Plugin/Discovery/AnnotatedClassDiscovery.php
@@ -69,7 +69,7 @@ class AnnotatedClassDiscovery implements DiscoveryInterface {
    * @param string[] $annotation_namespaces
    *   (optional) Additional namespaces to be scanned for annotation classes.
    */
-  function __construct($plugin_namespaces = [], $plugin_definition_annotation_name = 'Drupal\Component\Annotation\Plugin', array $annotation_namespaces = []) {
+  public function __construct($plugin_namespaces = [], $plugin_definition_annotation_name = 'Drupal\Component\Annotation\Plugin', array $annotation_namespaces = []) {
     $this->pluginNamespaces = $plugin_namespaces;
     $this->pluginDefinitionAnnotationName = $plugin_definition_annotation_name;
     $this->annotationNamespaces = $annotation_namespaces;
diff --git a/core/lib/Drupal/Component/Gettext/PoHeader.php b/core/lib/Drupal/Component/Gettext/PoHeader.php
index 806beba008dea29a4cde2c53b8a23b9f2eb971de..5dd13a5d5b9d77f6f302c6fa8aa2bb0f2581e2d7 100644
--- a/core/lib/Drupal/Component/Gettext/PoHeader.php
+++ b/core/lib/Drupal/Component/Gettext/PoHeader.php
@@ -85,7 +85,7 @@ public function __construct($langcode = NULL) {
    *   Plural form component from the header, for example:
    *   'nplurals=2; plural=(n > 1);'.
    */
-  function getPluralForms() {
+  public function getPluralForms() {
     return $this->_pluralForms;
   }
 
@@ -95,7 +95,7 @@ function getPluralForms() {
    * @param string $languageName
    *   Human readable language name.
    */
-  function setLanguageName($languageName) {
+  public function setLanguageName($languageName) {
     $this->_languageName = $languageName;
   }
 
@@ -105,7 +105,7 @@ function setLanguageName($languageName) {
    * @return string
    *   The human readable language name.
    */
-  function getLanguageName() {
+  public function getLanguageName() {
     return $this->_languageName;
   }
 
@@ -115,7 +115,7 @@ function getLanguageName() {
    * @param string $projectName
    *   Human readable project name.
    */
-  function setProjectName($projectName) {
+  public function setProjectName($projectName) {
     $this->_projectName = $projectName;
   }
 
@@ -125,7 +125,7 @@ function setProjectName($projectName) {
    * @return string
    *   The human readable project name.
    */
-  function getProjectName() {
+  public function getProjectName() {
     return $this->_projectName;
   }
 
@@ -190,7 +190,7 @@ public function __toString() {
    *
    * @throws Exception
    */
-  function parsePluralForms($pluralforms) {
+  public function parsePluralForms($pluralforms) {
     $plurals = [];
     // First, delete all whitespace.
     $pluralforms = strtr($pluralforms, [" " => "", "\t" => ""]);
diff --git a/core/lib/Drupal/Component/Gettext/PoItem.php b/core/lib/Drupal/Component/Gettext/PoItem.php
index 6d76d6c218c9444c8dcd56153b0daf3a37bdfddc..1f05bbd59dd64f3f659f71e8fff7446a3670ce9e 100644
--- a/core/lib/Drupal/Component/Gettext/PoItem.php
+++ b/core/lib/Drupal/Component/Gettext/PoItem.php
@@ -59,7 +59,7 @@ class PoItem {
    *
    * @return string with langcode
    */
-  function getLangcode() {
+  public function getLangcode() {
     return $this->_langcode;
   }
 
@@ -68,7 +68,7 @@ function getLangcode() {
    *
    * @param string $langcode
    */
-  function setLangcode($langcode) {
+  public function setLangcode($langcode) {
     $this->_langcode = $langcode;
   }
 
@@ -77,7 +77,7 @@ function setLangcode($langcode) {
    *
    * @return string $context
    */
-  function getContext() {
+  public function getContext() {
     return $this->_context;
   }
 
@@ -86,7 +86,7 @@ function getContext() {
    *
    * @param string $context
    */
-  function setContext($context) {
+  public function setContext($context) {
     $this->_context = $context;
   }
 
@@ -96,7 +96,7 @@ function setContext($context) {
    *
    * @return string or array $translation
    */
-  function getSource() {
+  public function getSource() {
     return $this->_source;
   }
 
@@ -106,7 +106,7 @@ function getSource() {
    *
    * @param string or array $source
    */
-  function setSource($source) {
+  public function setSource($source) {
     $this->_source = $source;
   }
 
@@ -116,7 +116,7 @@ function setSource($source) {
    *
    * @return string or array $translation
    */
-  function getTranslation() {
+  public function getTranslation() {
     return $this->_translation;
   }
 
@@ -126,7 +126,7 @@ function getTranslation() {
    *
    * @param string or array $translation
    */
-  function setTranslation($translation) {
+  public function setTranslation($translation) {
     $this->_translation = $translation;
   }
 
@@ -135,7 +135,7 @@ function setTranslation($translation) {
    *
    * @param bool $plural
    */
-  function setPlural($plural) {
+  public function setPlural($plural) {
     $this->_plural = $plural;
   }
 
@@ -144,7 +144,7 @@ function setPlural($plural) {
    *
    * @return bool
    */
-  function isPlural() {
+  public function isPlural() {
     return $this->_plural;
   }
 
@@ -153,7 +153,7 @@ function isPlural() {
    *
    * @return String $comment
    */
-  function getComment() {
+  public function getComment() {
     return $this->_comment;
   }
 
@@ -162,7 +162,7 @@ function getComment() {
    *
    * @param string $comment
    */
-  function setComment($comment) {
+  public function setComment($comment) {
     $this->_comment = $comment;
   }
 
diff --git a/core/lib/Drupal/Component/Gettext/PoMemoryWriter.php b/core/lib/Drupal/Component/Gettext/PoMemoryWriter.php
index c8da6e6d86ff9e3b3a782ff7d679223438ee470d..c5416b6fa420643df0069286c171a10363a746bd 100644
--- a/core/lib/Drupal/Component/Gettext/PoMemoryWriter.php
+++ b/core/lib/Drupal/Component/Gettext/PoMemoryWriter.php
@@ -17,7 +17,7 @@ class PoMemoryWriter implements PoWriterInterface {
   /**
    * Constructor, initialize empty items.
    */
-  function __construct() {
+  public function __construct() {
     $this->_items = [];
   }
 
@@ -57,7 +57,7 @@ public function getData() {
    *
    * Not implemented. Not relevant for the MemoryWriter.
    */
-  function setLangcode($langcode) {
+  public function setLangcode($langcode) {
   }
 
   /**
@@ -65,7 +65,7 @@ function setLangcode($langcode) {
    *
    * Not implemented. Not relevant for the MemoryWriter.
    */
-  function getLangcode() {
+  public function getLangcode() {
   }
 
   /**
@@ -73,7 +73,7 @@ function getLangcode() {
    *
    * Not implemented. Not relevant for the MemoryWriter.
    */
-  function getHeader() {
+  public function getHeader() {
   }
 
   /**
@@ -81,7 +81,7 @@ function getHeader() {
    *
    * Not implemented. Not relevant for the MemoryWriter.
    */
-  function setHeader(PoHeader $header) {
+  public function setHeader(PoHeader $header) {
   }
 
 }
diff --git a/core/lib/Drupal/Component/Gettext/PoStreamReader.php b/core/lib/Drupal/Component/Gettext/PoStreamReader.php
index c44f9a1a691eccf816677d952357bfe9e0d7bda2..f84d2514c0c892b03b48ad0e33341cb295886357 100644
--- a/core/lib/Drupal/Component/Gettext/PoStreamReader.php
+++ b/core/lib/Drupal/Component/Gettext/PoStreamReader.php
@@ -547,7 +547,7 @@ public function setItemFromArray($value) {
    * @return
    *   The string parsed from inside the quotes.
    */
-  function parseQuoted($string) {
+  public function parseQuoted($string) {
     if (substr($string, 0, 1) != substr($string, -1, 1)) {
       // Start and end quotes must be the same.
       return FALSE;
diff --git a/core/lib/Drupal/Component/PhpStorage/FileReadOnlyStorage.php b/core/lib/Drupal/Component/PhpStorage/FileReadOnlyStorage.php
index 5795638a3738a0c53aa57d4d7bbdf6b1bf2da026..1fb2f217f4d9b625cd5cfe077266e01ae6d61a28 100644
--- a/core/lib/Drupal/Component/PhpStorage/FileReadOnlyStorage.php
+++ b/core/lib/Drupal/Component/PhpStorage/FileReadOnlyStorage.php
@@ -68,7 +68,7 @@ public function getFullPath($name) {
   /**
    * {@inheritdoc}
    */
-  function writeable() {
+  public function writeable() {
     return FALSE;
   }
 
diff --git a/core/lib/Drupal/Core/Access/RouteProcessorCsrf.php b/core/lib/Drupal/Core/Access/RouteProcessorCsrf.php
index d529c0cf784708ac2e2df90fc3abb4a0a3fe8af0..9f2e7d409270c5cbff383112fc517a369042144d 100644
--- a/core/lib/Drupal/Core/Access/RouteProcessorCsrf.php
+++ b/core/lib/Drupal/Core/Access/RouteProcessorCsrf.php
@@ -25,7 +25,7 @@ class RouteProcessorCsrf implements OutboundRouteProcessorInterface {
    * @param \Drupal\Core\Access\CsrfTokenGenerator $csrf_token
    *   The CSRF token generator.
    */
-  function __construct(CsrfTokenGenerator $csrf_token) {
+  public function __construct(CsrfTokenGenerator $csrf_token) {
     $this->csrfToken = $csrf_token;
   }
 
diff --git a/core/lib/Drupal/Core/Cache/DatabaseBackendFactory.php b/core/lib/Drupal/Core/Cache/DatabaseBackendFactory.php
index 5cc87e91d7e61e3de42d21dcb127f98312b77818..8aa018ec45333615a60681f77cb51541157be2fe 100644
--- a/core/lib/Drupal/Core/Cache/DatabaseBackendFactory.php
+++ b/core/lib/Drupal/Core/Cache/DatabaseBackendFactory.php
@@ -28,7 +28,7 @@ class DatabaseBackendFactory implements CacheFactoryInterface {
    * @param \Drupal\Core\Cache\CacheTagsChecksumInterface $checksum_provider
    *   The cache tags checksum provider.
    */
-  function __construct(Connection $connection, CacheTagsChecksumInterface $checksum_provider) {
+  public function __construct(Connection $connection, CacheTagsChecksumInterface $checksum_provider) {
     $this->connection = $connection;
     $this->checksumProvider = $checksum_provider;
   }
@@ -42,7 +42,7 @@ function __construct(Connection $connection, CacheTagsChecksumInterface $checksu
    * @return \Drupal\Core\Cache\DatabaseBackend
    *   The cache backend object for the specified cache bin.
    */
-  function get($bin) {
+  public function get($bin) {
     return new DatabaseBackend($this->connection, $this->checksumProvider, $bin);
   }
 
diff --git a/core/lib/Drupal/Core/Cache/MemoryBackendFactory.php b/core/lib/Drupal/Core/Cache/MemoryBackendFactory.php
index 680f850af0543078ff9ddc063b016a4eabb3f2ef..c5c6a950a4cea5dd5a5c1656df2ab56eb32458ac 100644
--- a/core/lib/Drupal/Core/Cache/MemoryBackendFactory.php
+++ b/core/lib/Drupal/Core/Cache/MemoryBackendFactory.php
@@ -14,7 +14,7 @@ class MemoryBackendFactory implements CacheFactoryInterface {
   /**
    * {@inheritdoc}
    */
-  function get($bin) {
+  public function get($bin) {
     if (!isset($this->bins[$bin])) {
       $this->bins[$bin] = new MemoryBackend();
     }
diff --git a/core/lib/Drupal/Core/Cache/NullBackendFactory.php b/core/lib/Drupal/Core/Cache/NullBackendFactory.php
index 3f11f565232d55c5eb1ede858d37a3f96c3d1b70..909b10531785cb43b57f037a0962d721e9bce33d 100644
--- a/core/lib/Drupal/Core/Cache/NullBackendFactory.php
+++ b/core/lib/Drupal/Core/Cache/NullBackendFactory.php
@@ -7,7 +7,7 @@ class NullBackendFactory implements CacheFactoryInterface {
   /**
    * {@inheritdoc}
    */
-  function get($bin) {
+  public function get($bin) {
     return new NullBackend($bin);
   }
 
diff --git a/core/lib/Drupal/Core/Cache/PhpBackendFactory.php b/core/lib/Drupal/Core/Cache/PhpBackendFactory.php
index fdb32719366fccf4680d0dc6b89c5dfeb02217de..0091ed307ded05d5ebfd8e65d511b75e875d2ffb 100644
--- a/core/lib/Drupal/Core/Cache/PhpBackendFactory.php
+++ b/core/lib/Drupal/Core/Cache/PhpBackendFactory.php
@@ -30,7 +30,7 @@ public function __construct(CacheTagsChecksumInterface $checksum_provider) {
    * @return \Drupal\Core\Cache\PhpBackend
    *   The cache backend object for the specified cache bin.
    */
-  function get($bin) {
+  public function get($bin) {
     return new PhpBackend($bin, $this->checksumProvider);
   }
 
diff --git a/core/lib/Drupal/Core/Config/ConfigFactory.php b/core/lib/Drupal/Core/Config/ConfigFactory.php
index d91bec92e4094c82d61ae6f93d4d76fc08a9bb49..8c06cd1edf78b790b1942922910773dc036a297e 100644
--- a/core/lib/Drupal/Core/Config/ConfigFactory.php
+++ b/core/lib/Drupal/Core/Config/ConfigFactory.php
@@ -365,7 +365,7 @@ public function onConfigDelete(ConfigCrudEvent $event) {
   /**
    * {@inheritdoc}
    */
-  static function getSubscribedEvents() {
+  public static function getSubscribedEvents() {
     $events[ConfigEvents::SAVE][] = ['onConfigSave', 255];
     $events[ConfigEvents::DELETE][] = ['onConfigDelete', 255];
     return $events;
diff --git a/core/lib/Drupal/Core/Config/ConfigFactoryOverrideBase.php b/core/lib/Drupal/Core/Config/ConfigFactoryOverrideBase.php
index 3ca16021fca2d62d85ce1ede5d7df7fd6ec937f2..82e066965e9dd32387f36fccae7eb0bc056fbb42 100644
--- a/core/lib/Drupal/Core/Config/ConfigFactoryOverrideBase.php
+++ b/core/lib/Drupal/Core/Config/ConfigFactoryOverrideBase.php
@@ -44,7 +44,7 @@ abstract public function onConfigRename(ConfigRenameEvent $event);
   /**
    * {@inheritdoc}
    */
-  static function getSubscribedEvents() {
+  public static function getSubscribedEvents() {
     $events[ConfigEvents::COLLECTION_INFO][] = ['addCollections'];
     $events[ConfigEvents::SAVE][] = ['onConfigSave', 20];
     $events[ConfigEvents::DELETE][] = ['onConfigDelete', 20];
diff --git a/core/lib/Drupal/Core/Config/ConfigImportValidateEventSubscriberBase.php b/core/lib/Drupal/Core/Config/ConfigImportValidateEventSubscriberBase.php
index ca4964552d28cfd490c94baa8fe5b442886b087f..13263656cd1dc273b13c9cb97ce6a92f6aea7b04 100644
--- a/core/lib/Drupal/Core/Config/ConfigImportValidateEventSubscriberBase.php
+++ b/core/lib/Drupal/Core/Config/ConfigImportValidateEventSubscriberBase.php
@@ -22,7 +22,7 @@ abstract public function onConfigImporterValidate(ConfigImporterEvent $event);
   /**
    * {@inheritdoc}
    */
-  static function getSubscribedEvents() {
+  public static function getSubscribedEvents() {
     $events[ConfigEvents::IMPORT_VALIDATE][] = ['onConfigImporterValidate', 20];
     return $events;
   }
diff --git a/core/lib/Drupal/Core/Config/Entity/Query/Query.php b/core/lib/Drupal/Core/Config/Entity/Query/Query.php
index e75b98a868d404421160523dd5b7e242b763ab21..918853d34851f446079d5e5102d55943892899e1 100644
--- a/core/lib/Drupal/Core/Config/Entity/Query/Query.php
+++ b/core/lib/Drupal/Core/Config/Entity/Query/Query.php
@@ -49,7 +49,7 @@ class Query extends QueryBase implements QueryInterface {
    * @param array $namespaces
    *   List of potential namespaces of the classes belonging to this query.
    */
-  function __construct(EntityTypeInterface $entity_type, $conjunction, ConfigFactoryInterface $config_factory, KeyValueFactoryInterface $key_value_factory, array $namespaces) {
+  public function __construct(EntityTypeInterface $entity_type, $conjunction, ConfigFactoryInterface $config_factory, KeyValueFactoryInterface $key_value_factory, array $namespaces) {
     parent::__construct($entity_type, $conjunction, $namespaces);
     $this->configFactory = $config_factory;
     $this->keyValueFactory = $key_value_factory;
diff --git a/core/lib/Drupal/Core/Config/Entity/Query/QueryFactory.php b/core/lib/Drupal/Core/Config/Entity/Query/QueryFactory.php
index ac12f56e743df9ed1a8f029b5b2d8bbe95e67970..f87e618b3eec29e5ea362cd3d9d23362977d5162 100644
--- a/core/lib/Drupal/Core/Config/Entity/Query/QueryFactory.php
+++ b/core/lib/Drupal/Core/Config/Entity/Query/QueryFactory.php
@@ -249,7 +249,7 @@ public function onConfigDelete(ConfigCrudEvent $event) {
   /**
    * {@inheritdoc}
    */
-  static function getSubscribedEvents() {
+  public static function getSubscribedEvents() {
     $events[ConfigEvents::SAVE][] = ['onConfigSave', 128];
     $events[ConfigEvents::DELETE][] = ['onConfigDelete', 128];
     return $events;
diff --git a/core/lib/Drupal/Core/Config/FileStorageFactory.php b/core/lib/Drupal/Core/Config/FileStorageFactory.php
index 70c2582a8fa4abb546c56fa6ca7df5c92044bbf1..9e324975f9a05be685f30bfc18564322d1c83b5b 100644
--- a/core/lib/Drupal/Core/Config/FileStorageFactory.php
+++ b/core/lib/Drupal/Core/Config/FileStorageFactory.php
@@ -15,7 +15,7 @@ class FileStorageFactory {
    * @deprecated in Drupal 8.0.x and will be removed before 9.0.0. Drupal core
    * no longer creates an active directory.
    */
-  static function getActive() {
+  public static function getActive() {
     return new FileStorage(config_get_config_directory(CONFIG_ACTIVE_DIRECTORY));
   }
 
@@ -24,7 +24,7 @@ static function getActive() {
    *
    * @return \Drupal\Core\Config\FileStorage FileStorage
    */
-  static function getSync() {
+  public static function getSync() {
     return new FileStorage(config_get_config_directory(CONFIG_SYNC_DIRECTORY));
   }
 
diff --git a/core/lib/Drupal/Core/Config/Schema/ConfigSchemaDiscovery.php b/core/lib/Drupal/Core/Config/Schema/ConfigSchemaDiscovery.php
index b086c62cbb56d6dc17151695f8d098d8dd26987b..3e6301046ccfef970e6bae86ea7f14f470c58fec 100644
--- a/core/lib/Drupal/Core/Config/Schema/ConfigSchemaDiscovery.php
+++ b/core/lib/Drupal/Core/Config/Schema/ConfigSchemaDiscovery.php
@@ -26,7 +26,7 @@ class ConfigSchemaDiscovery implements DiscoveryInterface {
    * @param $schema_storage
    *   The storage object to use for reading schema data.
    */
-  function __construct(StorageInterface $schema_storage) {
+  public function __construct(StorageInterface $schema_storage) {
     $this->schemaStorage = $schema_storage;
   }
 
diff --git a/core/lib/Drupal/Core/Database/Connection.php b/core/lib/Drupal/Core/Database/Connection.php
index f6963c585b774ec5ca94a3a7036ecf1b95a1e913..803689b2c4f534654f10b923e37e7d94a770bfc0 100644
--- a/core/lib/Drupal/Core/Database/Connection.php
+++ b/core/lib/Drupal/Core/Database/Connection.php
@@ -1274,7 +1274,7 @@ protected function generateTemporaryTableName() {
    * @return string
    *   The name of the temporary table.
    */
-  abstract function queryTemporary($query, array $args = [], array $options = []);
+  abstract public function queryTemporary($query, array $args = [], array $options = []);
 
   /**
    * Returns the type of database driver.
diff --git a/core/lib/Drupal/Core/Database/Driver/mysql/Install/Tasks.php b/core/lib/Drupal/Core/Database/Driver/mysql/Install/Tasks.php
index b19af64cb46a89bb7fd0516c51553de532e2c469..0b1d7dde7d075479c8354e122d9bdd61e4d82a67 100644
--- a/core/lib/Drupal/Core/Database/Driver/mysql/Install/Tasks.php
+++ b/core/lib/Drupal/Core/Database/Driver/mysql/Install/Tasks.php
@@ -140,7 +140,7 @@ public function getFormOptions(array $database) {
   /**
    * Ensure that InnoDB is available.
    */
-  function ensureInnoDbAvailable() {
+  public function ensureInnoDbAvailable() {
     $engines = Database::getConnection()->query('SHOW ENGINES')->fetchAllKeyed();
     if (isset($engines['MyISAM']) && $engines['MyISAM'] == 'DEFAULT' && !isset($engines['InnoDB'])) {
       $this->fail(t('The MyISAM storage engine is not supported.'));
diff --git a/core/lib/Drupal/Core/Database/Driver/pgsql/Install/Tasks.php b/core/lib/Drupal/Core/Database/Driver/pgsql/Install/Tasks.php
index 33579de8e13c10e87569689e401176e4885be40d..d2cb36b60400a4f6f55dc041ffe036361ce28882 100644
--- a/core/lib/Drupal/Core/Database/Driver/pgsql/Install/Tasks.php
+++ b/core/lib/Drupal/Core/Database/Driver/pgsql/Install/Tasks.php
@@ -132,7 +132,7 @@ protected function checkEncoding() {
    *
    * Unserializing does not work on Postgresql 9 when bytea_output is 'hex'.
    */
-  function checkBinaryOutput() {
+  public function checkBinaryOutput() {
     // PostgreSQL < 9 doesn't support bytea_output, so verify we are running
     // at least PostgreSQL 9.
     $database_connection = Database::getConnection();
@@ -236,7 +236,7 @@ protected function checkStandardConformingStringsSuccess() {
   /**
    * Make PostgreSQL Drupal friendly.
    */
-  function initializeDatabase() {
+  public function initializeDatabase() {
     // We create some functions using global names instead of prefixing them
     // like we do with table names. This is so that we don't double up if more
     // than one instance of Drupal is running on a single database. We therefore
diff --git a/core/lib/Drupal/Core/Database/Driver/pgsql/Schema.php b/core/lib/Drupal/Core/Database/Driver/pgsql/Schema.php
index 19efe50c0b2dddd8a051513ffc405057fafa1c2d..33d037ef65e027b8afb591edb89ce093d5b9939b 100644
--- a/core/lib/Drupal/Core/Database/Driver/pgsql/Schema.php
+++ b/core/lib/Drupal/Core/Database/Driver/pgsql/Schema.php
@@ -386,7 +386,7 @@ protected function processField($field) {
    * This maps a generic data type in combination with its data size
    * to the engine-specific data type.
    */
-  function getFieldTypeMap() {
+  public function getFieldTypeMap() {
     // Put :normal last so it gets preserved by array_flip. This makes
     // it much easier for modules (such as schema.module) to map
     // database types back into schema types.
@@ -471,7 +471,7 @@ public function tableExists($table) {
     return (bool) $this->connection->query("SELECT 1 FROM pg_tables WHERE schemaname = :schema AND tablename = :table", [':schema' => $prefixInfo['schema'], ':table' => $prefixInfo['table']])->fetchField();
   }
 
-  function renameTable($table, $new_name) {
+  public function renameTable($table, $new_name) {
     if (!$this->tableExists($table)) {
       throw new SchemaObjectDoesNotExistException(t("Cannot rename @table to @table_new: table @table doesn't exist.", ['@table' => $table, '@table_new' => $new_name]));
     }
@@ -664,7 +664,7 @@ public function dropPrimaryKey($table) {
     return TRUE;
   }
 
-  function addUniqueKey($table, $name, $fields) {
+  public function addUniqueKey($table, $name, $fields) {
     if (!$this->tableExists($table)) {
       throw new SchemaObjectDoesNotExistException(t("Cannot add unique key @name to table @table: table doesn't exist.", ['@table' => $table, '@name' => $name]));
     }
diff --git a/core/lib/Drupal/Core/Database/Query/Condition.php b/core/lib/Drupal/Core/Database/Query/Condition.php
index d04fec58e3c058ccf352298c2697db0d89ed1cb6..51693576e86513488e110191c9caf484037f083b 100644
--- a/core/lib/Drupal/Core/Database/Query/Condition.php
+++ b/core/lib/Drupal/Core/Database/Query/Condition.php
@@ -341,7 +341,7 @@ public function __toString() {
    * Only copies fields that implement Drupal\Core\Database\Query\ConditionInterface. Also sets
    * $this->changed to TRUE.
    */
-  function __clone() {
+  public function __clone() {
     $this->changed = TRUE;
     foreach ($this->conditions as $key => $condition) {
       if ($key !== '#conjunction') {
diff --git a/core/lib/Drupal/Core/Database/Query/SelectExtender.php b/core/lib/Drupal/Core/Database/Query/SelectExtender.php
index 56fe7c132519556b59e37feca4450a41009dc009..9082ca8056a5f06e0370f22a719b6a0ef8383e62 100644
--- a/core/lib/Drupal/Core/Database/Query/SelectExtender.php
+++ b/core/lib/Drupal/Core/Database/Query/SelectExtender.php
@@ -440,7 +440,7 @@ public function countQuery() {
   /**
    * {@inheritdoc}
    */
-  function isNull($field) {
+  public function isNull($field) {
     $this->query->isNull($field);
     return $this;
   }
@@ -448,7 +448,7 @@ function isNull($field) {
   /**
    * {@inheritdoc}
    */
-  function isNotNull($field) {
+  public function isNotNull($field) {
     $this->query->isNotNull($field);
     return $this;
   }
diff --git a/core/lib/Drupal/Core/Database/Schema.php b/core/lib/Drupal/Core/Database/Schema.php
index eb98bb1d58881c936dd71efb68a69ff086cbb465..80a68f6e5acc8dd4a16430a520318249aee317fb 100644
--- a/core/lib/Drupal/Core/Database/Schema.php
+++ b/core/lib/Drupal/Core/Database/Schema.php
@@ -105,7 +105,7 @@ protected function getPrefixInfo($table = 'default', $add_prefix = TRUE) {
    *
    * This prevents using {} around non-table names like indexes and keys.
    */
-  function prefixNonTable($table) {
+  public function prefixNonTable($table) {
     $args = func_get_args();
     $info = $this->getPrefixInfo($table);
     $args[0] = $info['table'];
diff --git a/core/lib/Drupal/Core/Database/StatementInterface.php b/core/lib/Drupal/Core/Database/StatementInterface.php
index c0ee92936a37c0d2cf44166788feaa7e49e5c75f..a34bf617fabb159d6d1fb858e07290eae4904782 100644
--- a/core/lib/Drupal/Core/Database/StatementInterface.php
+++ b/core/lib/Drupal/Core/Database/StatementInterface.php
@@ -155,7 +155,7 @@ public function fetchAssoc();
    * @return
    *   An array of results.
    */
-  function fetchAll($mode = NULL, $column_index = NULL, $constructor_arguments = NULL);
+  public function fetchAll($mode = NULL, $column_index = NULL, $constructor_arguments = NULL);
 
   /**
    * Returns an entire single column of a result set as an indexed array.
diff --git a/core/lib/Drupal/Core/Entity/Query/QueryBase.php b/core/lib/Drupal/Core/Entity/Query/QueryBase.php
index f805747e9cf5acc05473a16bd2e6435d9bceeb4e..ed3d12b2c857316c0f95d8d821a93735151c8b43 100644
--- a/core/lib/Drupal/Core/Entity/Query/QueryBase.php
+++ b/core/lib/Drupal/Core/Entity/Query/QueryBase.php
@@ -325,7 +325,7 @@ public function tableSort(&$headers) {
   /**
    * Makes sure that the Condition object is cloned as well.
    */
-  function __clone() {
+  public function __clone() {
     $this->condition = clone $this->condition;
   }
 
diff --git a/core/lib/Drupal/Core/Entity/Query/Sql/QueryAggregate.php b/core/lib/Drupal/Core/Entity/Query/Sql/QueryAggregate.php
index f8e42f05bcdfa0248ba6482323160654a6819ae8..2d2aacfdf326e5c527be26e19b07208527beb2d1 100644
--- a/core/lib/Drupal/Core/Entity/Query/Sql/QueryAggregate.php
+++ b/core/lib/Drupal/Core/Entity/Query/Sql/QueryAggregate.php
@@ -151,7 +151,7 @@ protected function finish() {
    *   replaced with underscores and if a default fallback to .value happened,
    *   the _value is stripped.
    */
-  function createSqlAlias($field, $sql_field) {
+  public function createSqlAlias($field, $sql_field) {
     $alias = str_replace('.', '_', $sql_field);
     // If the alias contains of field_*_value remove the _value at the end.
     if (substr($alias, 0, 6) === 'field_' && substr($field, -6) !== '_value' && substr($alias, -6) === '_value') {
diff --git a/core/lib/Drupal/Core/EventSubscriber/AcceptNegotiation406.php b/core/lib/Drupal/Core/EventSubscriber/AcceptNegotiation406.php
index d644fa531aa3abc73b2cb413e6309749b1d3f06f..61309c64d5ffca10ebdc0022d8fb4879524deea2 100644
--- a/core/lib/Drupal/Core/EventSubscriber/AcceptNegotiation406.php
+++ b/core/lib/Drupal/Core/EventSubscriber/AcceptNegotiation406.php
@@ -36,7 +36,7 @@ public function onViewDetect406(GetResponseForControllerResultEvent $event) {
   /**
    * {@inheritdoc}
    */
-  static function getSubscribedEvents() {
+  public static function getSubscribedEvents() {
     $events[KernelEvents::VIEW][] = ['onViewDetect406', -10];
 
     return $events;
diff --git a/core/lib/Drupal/Core/EventSubscriber/ConfigSnapshotSubscriber.php b/core/lib/Drupal/Core/EventSubscriber/ConfigSnapshotSubscriber.php
index 330970138d9de562804d73b859735d143172aafc..289eae09d9f46b3b43c556a756235d340cbd1d94 100644
--- a/core/lib/Drupal/Core/EventSubscriber/ConfigSnapshotSubscriber.php
+++ b/core/lib/Drupal/Core/EventSubscriber/ConfigSnapshotSubscriber.php
@@ -64,7 +64,7 @@ public function onConfigImporterImport(ConfigImporterEvent $event) {
    * @return array
    *   An array of event listener definitions.
    */
-  static function getSubscribedEvents() {
+  public static function getSubscribedEvents() {
     $events[ConfigEvents::IMPORT][] = ['onConfigImporterImport', 40];
     return $events;
   }
diff --git a/core/lib/Drupal/Core/EventSubscriber/EntityRouteAlterSubscriber.php b/core/lib/Drupal/Core/EventSubscriber/EntityRouteAlterSubscriber.php
index ae8dafc4e3d88cef41b33c607253e09615377524..bca8f684b1c0282ea2399b1ad9d9ec4fa804a226 100644
--- a/core/lib/Drupal/Core/EventSubscriber/EntityRouteAlterSubscriber.php
+++ b/core/lib/Drupal/Core/EventSubscriber/EntityRouteAlterSubscriber.php
@@ -52,7 +52,7 @@ public function onRoutingRouteAlterSetType(RouteBuildEvent $event) {
   /**
    * {@inheritdoc}
    */
-  static function getSubscribedEvents() {
+  public static function getSubscribedEvents() {
     $events[RoutingEvents::ALTER][] = ['onRoutingRouteAlterSetType', -150];
     return $events;
   }
diff --git a/core/lib/Drupal/Core/EventSubscriber/KernelDestructionSubscriber.php b/core/lib/Drupal/Core/EventSubscriber/KernelDestructionSubscriber.php
index 79d7dd5a39a59160728c2bfa8c2624c6d5c48a05..0619695aacb68d0b088f95beca59e9346061009e 100644
--- a/core/lib/Drupal/Core/EventSubscriber/KernelDestructionSubscriber.php
+++ b/core/lib/Drupal/Core/EventSubscriber/KernelDestructionSubscriber.php
@@ -58,7 +58,7 @@ public function onKernelTerminate(PostResponseEvent $event) {
    * @return array
    *   An array of event listener definitions.
    */
-  static function getSubscribedEvents() {
+  public static function getSubscribedEvents() {
     // Run this subscriber after others as those might use services that need
     // to be terminated as well or run code that needs to run before
     // termination.
diff --git a/core/lib/Drupal/Core/EventSubscriber/MainContentViewSubscriber.php b/core/lib/Drupal/Core/EventSubscriber/MainContentViewSubscriber.php
index 04a7fd6d03da72a821aed7499167b2598a66fbe9..f63ade66ac3120c3188ddc27008c41de13448370 100644
--- a/core/lib/Drupal/Core/EventSubscriber/MainContentViewSubscriber.php
+++ b/core/lib/Drupal/Core/EventSubscriber/MainContentViewSubscriber.php
@@ -101,7 +101,7 @@ public function onViewRenderArray(GetResponseForControllerResultEvent $event) {
   /**
    * {@inheritdoc}
    */
-  static function getSubscribedEvents() {
+  public static function getSubscribedEvents() {
     $events[KernelEvents::VIEW][] = ['onViewRenderArray'];
 
     return $events;
diff --git a/core/lib/Drupal/Core/EventSubscriber/MenuRouterRebuildSubscriber.php b/core/lib/Drupal/Core/EventSubscriber/MenuRouterRebuildSubscriber.php
index 1bc662c54df4b7f12a1ebe2159ab5b88633288e1..521c58206b44ef7e8c5f8d5b93b6159842fde8e8 100644
--- a/core/lib/Drupal/Core/EventSubscriber/MenuRouterRebuildSubscriber.php
+++ b/core/lib/Drupal/Core/EventSubscriber/MenuRouterRebuildSubscriber.php
@@ -80,7 +80,7 @@ protected function menuLinksRebuild() {
   /**
    * {@inheritdoc}
    */
-  static function getSubscribedEvents() {
+  public static function getSubscribedEvents() {
     // Run after CachedRouteRebuildSubscriber.
     $events[RoutingEvents::FINISHED][] = ['onRouterRebuild', 100];
     return $events;
diff --git a/core/lib/Drupal/Core/EventSubscriber/ParamConverterSubscriber.php b/core/lib/Drupal/Core/EventSubscriber/ParamConverterSubscriber.php
index 19590ae6dd00cb547ae4327bf323b35437699b01..3b12516853168c1ce5db80db1cf8c5cc05f18b07 100644
--- a/core/lib/Drupal/Core/EventSubscriber/ParamConverterSubscriber.php
+++ b/core/lib/Drupal/Core/EventSubscriber/ParamConverterSubscriber.php
@@ -43,7 +43,7 @@ public function onRoutingRouteAlterSetParameterConverters(RouteBuildEvent $event
   /**
    * {@inheritdoc}
    */
-  static function getSubscribedEvents() {
+  public static function getSubscribedEvents() {
     // Run after \Drupal\system\EventSubscriber\AdminRouteSubscriber.
     $events[RoutingEvents::ALTER][] = ['onRoutingRouteAlterSetParameterConverters', -220];
     return $events;
diff --git a/core/lib/Drupal/Core/EventSubscriber/PathSubscriber.php b/core/lib/Drupal/Core/EventSubscriber/PathSubscriber.php
index 737c77cd16772f0f07087c1021e87176bde5c11f..1fec198a1dcbbb7987a88ce0e60e754c2f207416 100644
--- a/core/lib/Drupal/Core/EventSubscriber/PathSubscriber.php
+++ b/core/lib/Drupal/Core/EventSubscriber/PathSubscriber.php
@@ -70,7 +70,7 @@ public function onKernelTerminate(PostResponseEvent $event) {
    * @return array
    *   An array of event listener definitions.
    */
-  static function getSubscribedEvents() {
+  public static function getSubscribedEvents() {
     $events[KernelEvents::CONTROLLER][] = ['onKernelController', 200];
     $events[KernelEvents::TERMINATE][] = ['onKernelTerminate', 200];
     return $events;
diff --git a/core/lib/Drupal/Core/EventSubscriber/RedirectLeadingSlashesSubscriber.php b/core/lib/Drupal/Core/EventSubscriber/RedirectLeadingSlashesSubscriber.php
index ad7b049c7b8eea5f8576fa1eff5a3c70e82083ec..635fca1a8543d4cb76a615cb9306df39bbf03c6d 100644
--- a/core/lib/Drupal/Core/EventSubscriber/RedirectLeadingSlashesSubscriber.php
+++ b/core/lib/Drupal/Core/EventSubscriber/RedirectLeadingSlashesSubscriber.php
@@ -41,7 +41,7 @@ public function redirect(GetResponseEvent $event) {
   /**
    * {@inheritdoc}
    */
-  static function getSubscribedEvents() {
+  public static function getSubscribedEvents() {
     $events[KernelEvents::REQUEST][] = ['redirect', 1000];
     return $events;
   }
diff --git a/core/lib/Drupal/Core/EventSubscriber/RedirectResponseSubscriber.php b/core/lib/Drupal/Core/EventSubscriber/RedirectResponseSubscriber.php
index bf5ca05dbe460606d7aae90b206be54a20cbe69c..8397bdef4e50e5f25b1e48e6bd4bcc7ebfcbed00 100644
--- a/core/lib/Drupal/Core/EventSubscriber/RedirectResponseSubscriber.php
+++ b/core/lib/Drupal/Core/EventSubscriber/RedirectResponseSubscriber.php
@@ -165,7 +165,7 @@ public function sanitizeDestination(GetResponseEvent $event) {
    * @return array
    *   An array of event listener definitions.
    */
-  static function getSubscribedEvents() {
+  public static function getSubscribedEvents() {
     $events[KernelEvents::RESPONSE][] = ['checkRedirectUrl'];
     $events[KernelEvents::REQUEST][] = ['sanitizeDestination', 100];
     return $events;
diff --git a/core/lib/Drupal/Core/EventSubscriber/ReplicaDatabaseIgnoreSubscriber.php b/core/lib/Drupal/Core/EventSubscriber/ReplicaDatabaseIgnoreSubscriber.php
index b0228f888fb3fabba134a654af3a7e0b31f76306..fc123d36d1a854a2212f06782fe2c7f111a4fdea 100644
--- a/core/lib/Drupal/Core/EventSubscriber/ReplicaDatabaseIgnoreSubscriber.php
+++ b/core/lib/Drupal/Core/EventSubscriber/ReplicaDatabaseIgnoreSubscriber.php
@@ -47,7 +47,7 @@ public function checkReplicaServer(GetResponseEvent $event) {
   /**
    * {@inheritdoc}
    */
-  static function getSubscribedEvents() {
+  public static function getSubscribedEvents() {
     $events[KernelEvents::REQUEST][] = ['checkReplicaServer'];
     return $events;
   }
diff --git a/core/lib/Drupal/Core/EventSubscriber/RequestCloseSubscriber.php b/core/lib/Drupal/Core/EventSubscriber/RequestCloseSubscriber.php
index 765b1deb8c1c6ee3a5ea136dbc7cfb066eb47f92..81dd1efaa91577bdd65484997e07f0807f0cd9aa 100644
--- a/core/lib/Drupal/Core/EventSubscriber/RequestCloseSubscriber.php
+++ b/core/lib/Drupal/Core/EventSubscriber/RequestCloseSubscriber.php
@@ -23,7 +23,7 @@ class RequestCloseSubscriber implements EventSubscriberInterface {
    * @param \Drupal\Core\Extension\ModuleHandlerInterface $module_handler
    *   The module handler.
    */
-  function __construct(ModuleHandlerInterface $module_handler) {
+  public function __construct(ModuleHandlerInterface $module_handler) {
     $this->moduleHandler = $module_handler;
   }
 
@@ -48,7 +48,7 @@ public function onTerminate(PostResponseEvent $event) {
    * @return array
    *   An array of event listener definitions.
    */
-  static function getSubscribedEvents() {
+  public static function getSubscribedEvents() {
     $events[KernelEvents::TERMINATE][] = ['onTerminate', 100];
 
     return $events;
diff --git a/core/lib/Drupal/Core/EventSubscriber/RouteEnhancerSubscriber.php b/core/lib/Drupal/Core/EventSubscriber/RouteEnhancerSubscriber.php
index f12174a6bbab66b0feff383f2c23b1d8ea3626e6..8763842b58558cdd410b1bb95675a15039ad7b86 100644
--- a/core/lib/Drupal/Core/EventSubscriber/RouteEnhancerSubscriber.php
+++ b/core/lib/Drupal/Core/EventSubscriber/RouteEnhancerSubscriber.php
@@ -40,7 +40,7 @@ public function onRouteAlter(RouteBuildEvent $event) {
   /**
    * {@inheritdoc}
    */
-  static function getSubscribedEvents() {
+  public static function getSubscribedEvents() {
     $events[RoutingEvents::ALTER][] = ['onRouteAlter', -300];
     return $events;
   }
diff --git a/core/lib/Drupal/Core/EventSubscriber/RouteFilterSubscriber.php b/core/lib/Drupal/Core/EventSubscriber/RouteFilterSubscriber.php
index 79f98a43074d4206844b6ff24ea4cf9198491b3d..f64b8db514feea2950d34785d378383f08b159c1 100644
--- a/core/lib/Drupal/Core/EventSubscriber/RouteFilterSubscriber.php
+++ b/core/lib/Drupal/Core/EventSubscriber/RouteFilterSubscriber.php
@@ -42,7 +42,7 @@ public function onRouteAlter(RouteBuildEvent $event) {
   /**
    * {@inheritdoc}
    */
-  static function getSubscribedEvents() {
+  public static function getSubscribedEvents() {
     $events[RoutingEvents::ALTER][] = ['onRouteAlter', -300];
     return $events;
   }
diff --git a/core/lib/Drupal/Core/EventSubscriber/RouteMethodSubscriber.php b/core/lib/Drupal/Core/EventSubscriber/RouteMethodSubscriber.php
index b43ebf4b8bd636e762aafcaf5ac36aa50e8d7d69..31888352137e57f1845efed15183e25cf918b4ea 100644
--- a/core/lib/Drupal/Core/EventSubscriber/RouteMethodSubscriber.php
+++ b/core/lib/Drupal/Core/EventSubscriber/RouteMethodSubscriber.php
@@ -35,7 +35,7 @@ public function onRouteBuilding(RouteBuildEvent $event) {
   /**
    * {@inheritdoc}
    */
-  static function getSubscribedEvents() {
+  public static function getSubscribedEvents() {
     // Set a higher priority to ensure that routes get the default HTTP methods
     // as early as possible.
     $events[RoutingEvents::ALTER][] = ['onRouteBuilding', 5000];
diff --git a/core/lib/Drupal/Core/FileTransfer/FTP.php b/core/lib/Drupal/Core/FileTransfer/FTP.php
index 2238f330c1368fbe5fc3810d6ffec0ec2ac94066..83cf66bed4837dfd3c7a341185832876f29a5cd7 100644
--- a/core/lib/Drupal/Core/FileTransfer/FTP.php
+++ b/core/lib/Drupal/Core/FileTransfer/FTP.php
@@ -21,7 +21,7 @@ public function __construct($jail, $username, $password, $hostname, $port) {
   /**
    * {@inheritdoc}
    */
-  static function factory($jail, $settings) {
+  public static function factory($jail, $settings) {
     $username = empty($settings['username']) ? '' : $settings['username'];
     $password = empty($settings['password']) ? '' : $settings['password'];
     $hostname = empty($settings['advanced']['hostname']) ? 'localhost' : $settings['advanced']['hostname'];
diff --git a/core/lib/Drupal/Core/FileTransfer/FTPExtension.php b/core/lib/Drupal/Core/FileTransfer/FTPExtension.php
index 7cb0c540c7773eb1562a4799c176bc6a7ad474a9..c5f1b22b30d5644bb1a47a19b6e5c6284aed7121 100644
--- a/core/lib/Drupal/Core/FileTransfer/FTPExtension.php
+++ b/core/lib/Drupal/Core/FileTransfer/FTPExtension.php
@@ -101,7 +101,7 @@ public function isFile($path) {
   /**
    * {@inheritdoc}
    */
-  function chmodJailed($path, $mode, $recursive) {
+  public function chmodJailed($path, $mode, $recursive) {
     if (!ftp_chmod($this->connection, $mode, $path)) {
       throw new FileTransferException("Unable to set permissions on %file", NULL, ['%file' => $path]);
     }
diff --git a/core/lib/Drupal/Core/FileTransfer/FileTransfer.php b/core/lib/Drupal/Core/FileTransfer/FileTransfer.php
index a3cf6781e009fb25bc4c4963cef1f29e15f401e3..25014f1338058d927b03620e6aadb58951d24f73 100644
--- a/core/lib/Drupal/Core/FileTransfer/FileTransfer.php
+++ b/core/lib/Drupal/Core/FileTransfer/FileTransfer.php
@@ -49,7 +49,7 @@ abstract class FileTransfer {
    *   be restricted to. This prevents the FileTransfer classes from being
    *   able to touch other parts of the filesystem.
    */
-  function __construct($jail) {
+  public function __construct($jail) {
     $this->jail = $jail;
   }
 
@@ -73,7 +73,7 @@ function __construct($jail) {
    *
    * @throws \Drupal\Core\FileTransfer\FileTransferException
    */
-  static function factory($jail, $settings) {
+  public static function factory($jail, $settings) {
     throw new FileTransferException('FileTransfer::factory() static method not overridden by FileTransfer subclass.');
   }
 
@@ -90,7 +90,7 @@ static function factory($jail, $settings) {
    * @return string|bool
    *   The variable specified in $name.
    */
-  function __get($name) {
+  public function __get($name) {
     if ($name == 'connection') {
       $this->connect();
       return $this->connection;
@@ -249,7 +249,7 @@ protected final function fixRemotePath($path, $strip_chroot = TRUE) {
    * @return string
    *   The modified path.
    */
-  function sanitizePath($path) {
+  public function sanitizePath($path) {
     $path = str_replace('\\', '/', $path); // Windows path sanitization.
     if (substr($path, -1) == '/') {
       $path = substr($path, 0, -1);
@@ -347,7 +347,7 @@ abstract public function isFile($path);
    * @return string|bool
    *   If successful, the chroot path for this connection, otherwise FALSE.
    */
-  function findChroot() {
+  public function findChroot() {
     // If the file exists as is, there is no chroot.
     $path = __FILE__;
     $path = $this->fixRemotePath($path, FALSE);
@@ -373,7 +373,7 @@ function findChroot() {
   /**
    * Sets the chroot and changes the jail to match the correct path scheme.
    */
-  function setChroot() {
+  public function setChroot() {
     $this->chroot = $this->findChroot();
     $this->jail = $this->fixRemotePath($this->jail);
   }
diff --git a/core/lib/Drupal/Core/FileTransfer/FileTransferException.php b/core/lib/Drupal/Core/FileTransfer/FileTransferException.php
index f8d0d07f4062f2ed0e40941029677f487b5b6458..bcfd602d9e68b91a2649ec1731f1e464da6e2143 100644
--- a/core/lib/Drupal/Core/FileTransfer/FileTransferException.php
+++ b/core/lib/Drupal/Core/FileTransfer/FileTransferException.php
@@ -24,7 +24,7 @@ class FileTransferException extends \RuntimeException {
    * @param array $arguments
    *   Arguments to be used in this exception.
    */
-  function __construct($message, $code = 0, $arguments = []) {
+  public function __construct($message, $code = 0, $arguments = []) {
     parent::__construct($message, $code);
     $this->arguments = $arguments;
   }
diff --git a/core/lib/Drupal/Core/FileTransfer/Local.php b/core/lib/Drupal/Core/FileTransfer/Local.php
index 9320f4a3a1d2ca1dab2a1886ad6365f5f197e3de..1da4e48eaa75f309ab4a8cd4af584d15a3a7f249 100644
--- a/core/lib/Drupal/Core/FileTransfer/Local.php
+++ b/core/lib/Drupal/Core/FileTransfer/Local.php
@@ -17,7 +17,7 @@ public function connect() {
   /**
    * {@inheritdoc}
    */
-  static function factory($jail, $settings) {
+  public static function factory($jail, $settings) {
     return new Local($jail);
   }
 
diff --git a/core/lib/Drupal/Core/FileTransfer/SSH.php b/core/lib/Drupal/Core/FileTransfer/SSH.php
index 256aaf4c635839117d5285d1354e9248841cb2c9..5795526e93f8514595bff8916efeb0c765b38b46 100644
--- a/core/lib/Drupal/Core/FileTransfer/SSH.php
+++ b/core/lib/Drupal/Core/FileTransfer/SSH.php
@@ -10,7 +10,7 @@ class SSH extends FileTransfer implements ChmodInterface {
   /**
    * {@inheritdoc}
    */
-  function __construct($jail, $username, $password, $hostname = "localhost", $port = 22) {
+  public function __construct($jail, $username, $password, $hostname = "localhost", $port = 22) {
     $this->username = $username;
     $this->password = $password;
     $this->hostname = $hostname;
@@ -34,7 +34,7 @@ public function connect() {
   /**
    * {@inheritdoc}
    */
-  static function factory($jail, $settings) {
+  public static function factory($jail, $settings) {
     $username = empty($settings['username']) ? '' : $settings['username'];
     $password = empty($settings['password']) ? '' : $settings['password'];
     $hostname = empty($settings['advanced']['hostname']) ? 'localhost' : $settings['advanced']['hostname'];
@@ -127,7 +127,7 @@ public function isFile($path) {
   /**
    * {@inheritdoc}
    */
-  function chmodJailed($path, $mode, $recursive) {
+  public function chmodJailed($path, $mode, $recursive) {
     $cmd = sprintf("chmod %s%o %s", $recursive ? '-R ' : '', $mode, escapeshellarg($path));
     if (@!ssh2_exec($this->connection, $cmd)) {
       throw new FileTransferException('Cannot change permissions of @path.', NULL, ['@path' => $path]);
diff --git a/core/lib/Drupal/Core/KeyValueStore/DatabaseStorageExpirable.php b/core/lib/Drupal/Core/KeyValueStore/DatabaseStorageExpirable.php
index 8e487d18330119778081a749c57d7bad708adfe6..c6514962d6371029d28881416578b71808836555 100644
--- a/core/lib/Drupal/Core/KeyValueStore/DatabaseStorageExpirable.php
+++ b/core/lib/Drupal/Core/KeyValueStore/DatabaseStorageExpirable.php
@@ -71,7 +71,7 @@ public function getAll() {
   /**
    * {@inheritdoc}
    */
-  function setWithExpire($key, $value, $expire) {
+  public function setWithExpire($key, $value, $expire) {
     $this->connection->merge($this->table)
       ->keys([
         'name' => $key,
@@ -87,7 +87,7 @@ function setWithExpire($key, $value, $expire) {
   /**
    * {@inheritdoc}
    */
-  function setWithExpireIfNotExists($key, $value, $expire) {
+  public function setWithExpireIfNotExists($key, $value, $expire) {
     $result = $this->connection->merge($this->table)
       ->insertFields([
         'collection' => $this->collection,
@@ -104,7 +104,7 @@ function setWithExpireIfNotExists($key, $value, $expire) {
   /**
    * {@inheritdoc}
    */
-  function setMultipleWithExpire(array $data, $expire) {
+  public function setMultipleWithExpire(array $data, $expire) {
     foreach ($data as $key => $value) {
       $this->setWithExpire($key, $value, $expire);
     }
diff --git a/core/lib/Drupal/Core/KeyValueStore/KeyValueDatabaseExpirableFactory.php b/core/lib/Drupal/Core/KeyValueStore/KeyValueDatabaseExpirableFactory.php
index 7815b8c15788b1bc7a6e3aea51fee32dbb34c9b1..f9c9b4c17a6147023a6647f4da33c6b3c86a0e03 100644
--- a/core/lib/Drupal/Core/KeyValueStore/KeyValueDatabaseExpirableFactory.php
+++ b/core/lib/Drupal/Core/KeyValueStore/KeyValueDatabaseExpirableFactory.php
@@ -39,7 +39,7 @@ class KeyValueDatabaseExpirableFactory implements KeyValueExpirableFactoryInterf
    * @param \Drupal\Core\Database\Connection $connection
    *   The Connection object containing the key-value tables.
    */
-  function __construct(SerializationInterface $serializer, Connection $connection) {
+  public function __construct(SerializationInterface $serializer, Connection $connection) {
     $this->serializer = $serializer;
     $this->connection = $connection;
   }
diff --git a/core/lib/Drupal/Core/KeyValueStore/KeyValueDatabaseFactory.php b/core/lib/Drupal/Core/KeyValueStore/KeyValueDatabaseFactory.php
index d70cb1196e373aa7619eda574f6dd3301f768f41..3bb45c16c4321a4ec1dd87effcb3c72689557eb6 100644
--- a/core/lib/Drupal/Core/KeyValueStore/KeyValueDatabaseFactory.php
+++ b/core/lib/Drupal/Core/KeyValueStore/KeyValueDatabaseFactory.php
@@ -32,7 +32,7 @@ class KeyValueDatabaseFactory implements KeyValueFactoryInterface {
    * @param \Drupal\Core\Database\Connection $connection
    *   The Connection object containing the key-value tables.
    */
-  function __construct(SerializationInterface $serializer, Connection $connection) {
+  public function __construct(SerializationInterface $serializer, Connection $connection) {
     $this->serializer = $serializer;
     $this->connection = $connection;
   }
diff --git a/core/lib/Drupal/Core/KeyValueStore/KeyValueFactory.php b/core/lib/Drupal/Core/KeyValueStore/KeyValueFactory.php
index 0801ca1f0a79c82583970f4163ac5628145c649c..eeaf510ea2ca5031b74705c1d9ac84cffa78106d 100644
--- a/core/lib/Drupal/Core/KeyValueStore/KeyValueFactory.php
+++ b/core/lib/Drupal/Core/KeyValueStore/KeyValueFactory.php
@@ -50,7 +50,7 @@ class KeyValueFactory implements KeyValueFactoryInterface {
    * @param array $options
    *   (optional) Collection-specific storage override options.
    */
-  function __construct(ContainerInterface $container, array $options = []) {
+  public function __construct(ContainerInterface $container, array $options = []) {
     $this->container = $container;
     $this->options = $options;
   }
diff --git a/core/lib/Drupal/Core/Password/PhpassHashedPassword.php b/core/lib/Drupal/Core/Password/PhpassHashedPassword.php
index 28313d266c794cbf0b8352ad18bcab57b76845e7..0f938a0356d52edf65ae7bc15ab4e63116777a1f 100644
--- a/core/lib/Drupal/Core/Password/PhpassHashedPassword.php
+++ b/core/lib/Drupal/Core/Password/PhpassHashedPassword.php
@@ -47,7 +47,7 @@ class PhpassHashedPassword implements PasswordInterface {
    *   The number of times is calculated by raising 2 to the power of the given
    *   value.
    */
-  function __construct($countLog2) {
+  public function __construct($countLog2) {
     // Ensure that $countLog2 is within set bounds.
     $this->countLog2 = $this->enforceLog2Boundaries($countLog2);
   }
diff --git a/core/lib/Drupal/Core/PhpStorage/PhpStorageFactory.php b/core/lib/Drupal/Core/PhpStorage/PhpStorageFactory.php
index 17f889e4b182a102061cc32eebcbc5bcd5b4ca78..cdacff6fe1bfecf7758f6c3cff31e76889cc532b 100644
--- a/core/lib/Drupal/Core/PhpStorage/PhpStorageFactory.php
+++ b/core/lib/Drupal/Core/PhpStorage/PhpStorageFactory.php
@@ -28,7 +28,7 @@ class PhpStorageFactory {
    * @return \Drupal\Component\PhpStorage\PhpStorageInterface
    *   An instantiated storage for the specified name.
    */
-  static function get($name) {
+  public static function get($name) {
     $configuration = [];
     $overrides = Settings::get('php_storage');
     if (isset($overrides[$name])) {
diff --git a/core/lib/Drupal/Core/Plugin/Discovery/AnnotatedClassDiscovery.php b/core/lib/Drupal/Core/Plugin/Discovery/AnnotatedClassDiscovery.php
index bbcc858c9ccae4bfadd91dbfe4dbde316450fd19..9ecbaa05375428543655d307aa94373c2aa4fd47 100644
--- a/core/lib/Drupal/Core/Plugin/Discovery/AnnotatedClassDiscovery.php
+++ b/core/lib/Drupal/Core/Plugin/Discovery/AnnotatedClassDiscovery.php
@@ -50,7 +50,7 @@ class AnnotatedClassDiscovery extends ComponentAnnotatedClassDiscovery {
    * @param string[] $annotation_namespaces
    *   (optional) Additional namespaces to scan for annotation definitions.
    */
-  function __construct($subdir, \Traversable $root_namespaces, $plugin_definition_annotation_name = 'Drupal\Component\Annotation\Plugin', array $annotation_namespaces = []) {
+  public function __construct($subdir, \Traversable $root_namespaces, $plugin_definition_annotation_name = 'Drupal\Component\Annotation\Plugin', array $annotation_namespaces = []) {
     if ($subdir) {
       // Prepend a directory separator to $subdir,
       // if it does not already have one.
diff --git a/core/lib/Drupal/Core/Plugin/Discovery/HookDiscovery.php b/core/lib/Drupal/Core/Plugin/Discovery/HookDiscovery.php
index e366bcb28977dd36e6b59a2e06998dc54ed72845..51040cd0d3f641ee2de22c07731d33fa89e8718b 100644
--- a/core/lib/Drupal/Core/Plugin/Discovery/HookDiscovery.php
+++ b/core/lib/Drupal/Core/Plugin/Discovery/HookDiscovery.php
@@ -36,7 +36,7 @@ class HookDiscovery implements DiscoveryInterface {
    *   The Drupal hook that a module can implement in order to interface to
    *   this discovery class.
    */
-  function __construct(ModuleHandlerInterface $module_handler, $hook) {
+  public function __construct(ModuleHandlerInterface $module_handler, $hook) {
     $this->moduleHandler = $module_handler;
     $this->hook = $hook;
   }
diff --git a/core/lib/Drupal/Core/Plugin/Discovery/YamlDiscovery.php b/core/lib/Drupal/Core/Plugin/Discovery/YamlDiscovery.php
index af5630c764b276e988f348d2e60756ed6c6b29fd..586655806016cf1124d6c1c1651cdbbfd698c43c 100644
--- a/core/lib/Drupal/Core/Plugin/Discovery/YamlDiscovery.php
+++ b/core/lib/Drupal/Core/Plugin/Discovery/YamlDiscovery.php
@@ -47,7 +47,7 @@ class YamlDiscovery implements DiscoveryInterface {
    * @param array $directories
    *   An array of directories to scan.
    */
-  function __construct($name, array $directories) {
+  public function __construct($name, array $directories) {
     $this->discovery = new CoreYamlDiscovery($name, $directories);
   }
 
diff --git a/core/lib/Drupal/Core/PrivateKey.php b/core/lib/Drupal/Core/PrivateKey.php
index 9d0f73602a590facf82423a6830b6590babf2c4f..d7ac845f58a661a3b15eb95d51999c36f085e6cc 100644
--- a/core/lib/Drupal/Core/PrivateKey.php
+++ b/core/lib/Drupal/Core/PrivateKey.php
@@ -23,7 +23,7 @@ class PrivateKey {
    * @param \Drupal\Core\State\StateInterface $state
    *   The state service.
    */
-  function __construct(StateInterface $state) {
+  public function __construct(StateInterface $state) {
     $this->state = $state;
   }
 
diff --git a/core/lib/Drupal/Core/Queue/DatabaseQueue.php b/core/lib/Drupal/Core/Queue/DatabaseQueue.php
index 710a99b4941e56673e0ebaae1307fcf663be4952..e70000ee2264f910cf58031a4c0141dfe8e3ed8a 100644
--- a/core/lib/Drupal/Core/Queue/DatabaseQueue.php
+++ b/core/lib/Drupal/Core/Queue/DatabaseQueue.php
@@ -42,7 +42,7 @@ class DatabaseQueue implements ReliableQueueInterface, QueueGarbageCollectionInt
    * @param \Drupal\Core\Database\Connection $connection
    *   The Connection object containing the key-value tables.
    */
-  function __construct($name, Connection $connection) {
+  public function __construct($name, Connection $connection) {
     $this->name = $name;
     $this->connection = $connection;
   }
diff --git a/core/lib/Drupal/Core/Queue/QueueDatabaseFactory.php b/core/lib/Drupal/Core/Queue/QueueDatabaseFactory.php
index e2bec48682bc1dc53ba96862dbfa87fa0281d571..a64678952e4fa51a5de467ba2da81f9e9e18bb1e 100644
--- a/core/lib/Drupal/Core/Queue/QueueDatabaseFactory.php
+++ b/core/lib/Drupal/Core/Queue/QueueDatabaseFactory.php
@@ -22,7 +22,7 @@ class QueueDatabaseFactory {
    * @param \Drupal\Core\Database\Connection $connection
    *   The Connection object containing the key-value tables.
    */
-  function __construct(Connection $connection) {
+  public function __construct(Connection $connection) {
     $this->connection = $connection;
   }
 
diff --git a/core/lib/Drupal/Core/Queue/QueueFactory.php b/core/lib/Drupal/Core/Queue/QueueFactory.php
index 74126ef9041e176c2cd9b5f790e9eae82261e645..6df7c5e6026a79d5e55cae815ff0195c4b172f6b 100644
--- a/core/lib/Drupal/Core/Queue/QueueFactory.php
+++ b/core/lib/Drupal/Core/Queue/QueueFactory.php
@@ -31,7 +31,7 @@ class QueueFactory implements ContainerAwareInterface {
   /**
    * Constructs a queue factory.
    */
-  function __construct(Settings $settings) {
+  public function __construct(Settings $settings) {
     $this->settings = $settings;
   }
 
diff --git a/core/lib/Drupal/Core/Routing/RouteProvider.php b/core/lib/Drupal/Core/Routing/RouteProvider.php
index 1ba5f0d96c8ac6b3206b2ba4f3435b3f4a69370d..5d92e77e0f1908527b21c26d1da5090c13b43f51 100644
--- a/core/lib/Drupal/Core/Routing/RouteProvider.php
+++ b/core/lib/Drupal/Core/Routing/RouteProvider.php
@@ -397,7 +397,7 @@ public function reset() {
   /**
    * {@inheritdoc}
    */
-  static function getSubscribedEvents() {
+  public static function getSubscribedEvents() {
     $events[RoutingEvents::FINISHED][] = ['reset'];
     return $events;
   }
diff --git a/core/lib/Drupal/Core/Session/UserSession.php b/core/lib/Drupal/Core/Session/UserSession.php
index f25247d213e1e35204c5124118f66a6e14c24f25..f426803cebf1eb87c411873a2c30923928f82a17 100644
--- a/core/lib/Drupal/Core/Session/UserSession.php
+++ b/core/lib/Drupal/Core/Session/UserSession.php
@@ -128,7 +128,7 @@ public function isAnonymous() {
   /**
    * {@inheritdoc}
    */
-  function getPreferredLangcode($fallback_to_default = TRUE) {
+  public function getPreferredLangcode($fallback_to_default = TRUE) {
     $language_list = \Drupal::languageManager()->getLanguages();
     if (!empty($this->preferred_langcode) && isset($language_list[$this->preferred_langcode])) {
       return $language_list[$this->preferred_langcode]->getId();
@@ -141,7 +141,7 @@ function getPreferredLangcode($fallback_to_default = TRUE) {
   /**
    * {@inheritdoc}
    */
-  function getPreferredAdminLangcode($fallback_to_default = TRUE) {
+  public function getPreferredAdminLangcode($fallback_to_default = TRUE) {
     $language_list = \Drupal::languageManager()->getLanguages();
     if (!empty($this->preferred_admin_langcode) && isset($language_list[$this->preferred_admin_langcode])) {
       return $language_list[$this->preferred_admin_langcode]->getId();
diff --git a/core/lib/Drupal/Core/StreamWrapper/LocalStream.php b/core/lib/Drupal/Core/StreamWrapper/LocalStream.php
index a6c8d2e48d6bb39481db6561e3cea8361a94394c..ec1980ebd37579483a50cb5ff022e91a7e59af17 100644
--- a/core/lib/Drupal/Core/StreamWrapper/LocalStream.php
+++ b/core/lib/Drupal/Core/StreamWrapper/LocalStream.php
@@ -52,19 +52,19 @@ public static function getType() {
    * @return string
    *   String specifying the path.
    */
-  abstract function getDirectoryPath();
+  abstract public function getDirectoryPath();
 
   /**
    * {@inheritdoc}
    */
-  function setUri($uri) {
+  public function setUri($uri) {
     $this->uri = $uri;
   }
 
   /**
    * {@inheritdoc}
    */
-  function getUri() {
+  public function getUri() {
     return $this->uri;
   }
 
@@ -98,7 +98,7 @@ protected function getTarget($uri = NULL) {
   /**
    * {@inheritdoc}
    */
-  function realpath() {
+  public function realpath() {
     return $this->getLocalPath();
   }
 
diff --git a/core/lib/Drupal/Core/StreamWrapper/ReadOnlyStream.php b/core/lib/Drupal/Core/StreamWrapper/ReadOnlyStream.php
index e5538cc42f2564bc9955c3a6e3da09c7f3e12ebc..2bf03f6cd87e913a6ac66bf4fde58ff8ef3e9ba8 100644
--- a/core/lib/Drupal/Core/StreamWrapper/ReadOnlyStream.php
+++ b/core/lib/Drupal/Core/StreamWrapper/ReadOnlyStream.php
@@ -39,14 +39,14 @@ abstract class ReadOnlyStream implements StreamWrapperInterface {
   /**
    * {@inheritdoc}
    */
-  function setUri($uri) {
+  public function setUri($uri) {
     $this->uri = $uri;
   }
 
   /**
    * {@inheritdoc}
    */
-  function getUri() {
+  public function getUri() {
     return $this->uri;
   }
 
diff --git a/core/lib/Drupal/Core/Template/AttributeValueBase.php b/core/lib/Drupal/Core/Template/AttributeValueBase.php
index a0280e61064cd142f1c01f592f60d28eb2ece6a6..0990eb3fdde600a6f686b2b6b7b234826bdf31a2 100644
--- a/core/lib/Drupal/Core/Template/AttributeValueBase.php
+++ b/core/lib/Drupal/Core/Template/AttributeValueBase.php
@@ -65,6 +65,6 @@ public function value() {
   /**
    * Implements the magic __toString() method.
    */
-  abstract function __toString();
+  abstract public function __toString();
 
 }
diff --git a/core/lib/Drupal/Core/Updater/Theme.php b/core/lib/Drupal/Core/Updater/Theme.php
index d16af5738180d28ff1bd156ecf20ee9200a1d5f5..7ac70f098fd1813583037dc9c4aaddb85fab8840 100644
--- a/core/lib/Drupal/Core/Updater/Theme.php
+++ b/core/lib/Drupal/Core/Updater/Theme.php
@@ -56,7 +56,7 @@ public function isInstalled() {
   /**
    * {@inheritdoc}
    */
-  static function canUpdateDirectory($directory) {
+  public static function canUpdateDirectory($directory) {
     $info = static::getExtensionInfo($directory);
 
     return (isset($info['type']) && $info['type'] == 'theme');
diff --git a/core/lib/Drupal/Core/Utility/ProjectInfo.php b/core/lib/Drupal/Core/Utility/ProjectInfo.php
index 4a4d0c0a65719ca260cc0466c29cdb58133ea442..395a23bfade8711fd3aedf825fd464027e38969f 100644
--- a/core/lib/Drupal/Core/Utility/ProjectInfo.php
+++ b/core/lib/Drupal/Core/Utility/ProjectInfo.php
@@ -39,7 +39,7 @@ class ProjectInfo {
    *   (optional) Array of additional elements to be collected from the .info.yml
    *   file. Defaults to array().
    */
-  function processInfoList(array &$projects, array $list, $project_type, $status, array $additional_whitelist = []) {
+  public function processInfoList(array &$projects, array $list, $project_type, $status, array $additional_whitelist = []) {
     foreach ($list as $file) {
       // Just projects with a matching status should be listed.
       if ($file->status != $status) {
@@ -148,7 +148,7 @@ function processInfoList(array &$projects, array $list, $project_type, $status,
    * @return string
    *   The canonical project short name.
    */
-  function getProjectName(Extension $file) {
+  public function getProjectName(Extension $file) {
     $project_name = '';
     if (isset($file->info['project'])) {
       $project_name = $file->info['project'];
@@ -174,7 +174,7 @@ function getProjectName(Extension $file) {
    *
    * @see \Drupal\Core\Utility\ProjectInfo::processInfoList()
    */
-  function filterProjectInfo($info, $additional_whitelist = []) {
+  public function filterProjectInfo($info, $additional_whitelist = []) {
     $whitelist = [
       '_info_file_ctime',
       'datestamp',
diff --git a/core/lib/Drupal/Core/Utility/ThemeRegistry.php b/core/lib/Drupal/Core/Utility/ThemeRegistry.php
index 99b970ca9d08d3b62d357aef94f11742bb65bdcf..bc2ce5a2211d9ff24cfbda4eda720ad8bd66cd8d 100644
--- a/core/lib/Drupal/Core/Utility/ThemeRegistry.php
+++ b/core/lib/Drupal/Core/Utility/ThemeRegistry.php
@@ -46,7 +46,7 @@ class ThemeRegistry extends CacheCollector implements DestructableInterface {
    * @param bool $modules_loaded
    *   Whether all modules have already been loaded.
    */
-  function __construct($cid, CacheBackendInterface $cache, LockBackendInterface $lock, $tags = [], $modules_loaded = FALSE) {
+  public function __construct($cid, CacheBackendInterface $cache, LockBackendInterface $lock, $tags = [], $modules_loaded = FALSE) {
     $this->cid = $cid;
     $this->cache = $cache;
     $this->lock = $lock;
@@ -81,7 +81,7 @@ function __construct($cid, CacheBackendInterface $cache, LockBackendInterface $l
    *   An array with the keys of the full theme registry, but the values
    *   initialized to NULL.
    */
-  function initializeRegistry() {
+  public function initializeRegistry() {
     // @todo DIC this.
     $this->completeRegistry = \Drupal::service('theme.registry')->get();
 
diff --git a/core/modules/action/tests/src/Functional/ConfigurationTest.php b/core/modules/action/tests/src/Functional/ConfigurationTest.php
index 063e4a89ebcba2da78d38f427efcad91c8cae121..472ba17125ce7aba1f5ce22bae4eed5cab27823d 100644
--- a/core/modules/action/tests/src/Functional/ConfigurationTest.php
+++ b/core/modules/action/tests/src/Functional/ConfigurationTest.php
@@ -24,7 +24,7 @@ class ConfigurationTest extends BrowserTestBase {
   /**
    * Tests configuration of advanced actions through administration interface.
    */
-  function testActionConfiguration() {
+  public function testActionConfiguration() {
     // Create a user with permission to view the actions administration pages.
     $user = $this->drupalCreateUser(['administer actions']);
     $this->drupalLogin($user);
diff --git a/core/modules/aggregator/src/Tests/AggregatorAdminTest.php b/core/modules/aggregator/src/Tests/AggregatorAdminTest.php
index 3d09bbcac0ad67b653a83906e439697bf2888571..01898b6cf09dca27b44be1b849e28e7d1719d251 100644
--- a/core/modules/aggregator/src/Tests/AggregatorAdminTest.php
+++ b/core/modules/aggregator/src/Tests/AggregatorAdminTest.php
@@ -59,7 +59,7 @@ public function testSettingsPage() {
   /**
    * Tests the overview page.
    */
-  function testOverviewPage() {
+  public function testOverviewPage() {
     $feed = $this->createFeed($this->getRSS091Sample());
     $this->drupalGet('admin/config/services/aggregator');
 
diff --git a/core/modules/ban/tests/src/Functional/IpAddressBlockingTest.php b/core/modules/ban/tests/src/Functional/IpAddressBlockingTest.php
index 0a155fb471b9644c286dd5877dff12b848b33ae3..778f3dba97514a3fdb02924295e9bba291a07676 100644
--- a/core/modules/ban/tests/src/Functional/IpAddressBlockingTest.php
+++ b/core/modules/ban/tests/src/Functional/IpAddressBlockingTest.php
@@ -23,7 +23,7 @@ class IpAddressBlockingTest extends BrowserTestBase {
   /**
    * Tests various user input to confirm correct validation and saving of data.
    */
-  function testIPAddressValidation() {
+  public function testIPAddressValidation() {
     // Create user.
     $admin_user = $this->drupalCreateUser(['ban IP addresses']);
     $this->drupalLogin($admin_user);
diff --git a/core/modules/basic_auth/src/Tests/Authentication/BasicAuthTest.php b/core/modules/basic_auth/src/Tests/Authentication/BasicAuthTest.php
index 45b9b356eb50214a866dcdbe5fa5680c274a6b38..3650e4fb6213a7f946c582b4c690851b3ad5400c 100644
--- a/core/modules/basic_auth/src/Tests/Authentication/BasicAuthTest.php
+++ b/core/modules/basic_auth/src/Tests/Authentication/BasicAuthTest.php
@@ -75,7 +75,7 @@ public function testBasicAuth() {
   /**
    * Test the global login flood control.
    */
-  function testGlobalLoginFloodControl() {
+  public function testGlobalLoginFloodControl() {
     $this->config('user.flood')
       ->set('ip_limit', 2)
       // Set a high per-user limit out so that it is not relevant in the test.
@@ -100,7 +100,7 @@ function testGlobalLoginFloodControl() {
   /**
    * Test the per-user login flood control.
    */
-  function testPerUserLoginFloodControl() {
+  public function testPerUserLoginFloodControl() {
     $this->config('user.flood')
       // Set a high global limit out so that it is not relevant in the test.
       ->set('ip_limit', 4000)
@@ -138,7 +138,7 @@ function testPerUserLoginFloodControl() {
   /**
    * Tests compatibility with locale/UI translation.
    */
-  function testLocale() {
+  public function testLocale() {
     ConfigurableLanguage::createFromLangcode('de')->save();
     $this->config('system.site')->set('default_langcode', 'de')->save();
 
@@ -154,7 +154,7 @@ function testLocale() {
   /**
    * Tests if a comprehensive message is displayed when the route is denied.
    */
-  function testUnauthorizedErrorMessage() {
+  public function testUnauthorizedErrorMessage() {
     $account = $this->drupalCreateUser();
     $url = Url::fromRoute('router_test.11');
 
diff --git a/core/modules/big_pipe/src/EventSubscriber/NoBigPipeRouteAlterSubscriber.php b/core/modules/big_pipe/src/EventSubscriber/NoBigPipeRouteAlterSubscriber.php
index 516aeb4e0b474a2aa4a378b008c1f1a7dd894899..8b3c9c23a7c8cd2cd15815c3c115d99fb2d6cf45 100644
--- a/core/modules/big_pipe/src/EventSubscriber/NoBigPipeRouteAlterSubscriber.php
+++ b/core/modules/big_pipe/src/EventSubscriber/NoBigPipeRouteAlterSubscriber.php
@@ -40,7 +40,7 @@ public function onRoutingRouteAlterSetNoBigPipe(RouteBuildEvent $event) {
   /**
    * {@inheritdoc}
    */
-  static function getSubscribedEvents() {
+  public static function getSubscribedEvents() {
     $events[RoutingEvents::ALTER][] = ['onRoutingRouteAlterSetNoBigPipe'];
     return $events;
   }
diff --git a/core/modules/big_pipe/tests/src/Unit/Render/BigPipeResponseAttachmentsProcessorTest.php b/core/modules/big_pipe/tests/src/Unit/Render/BigPipeResponseAttachmentsProcessorTest.php
index f7d137dff8f23ce3999c936ac6ea9bbddeb9dcde..b45c916ceea0de5023686d00284fc5b6819b9cc0 100644
--- a/core/modules/big_pipe/tests/src/Unit/Render/BigPipeResponseAttachmentsProcessorTest.php
+++ b/core/modules/big_pipe/tests/src/Unit/Render/BigPipeResponseAttachmentsProcessorTest.php
@@ -38,7 +38,7 @@ public function testNonHtmlResponse($response_class) {
     $big_pipe_response_attachments_processor->processAttachments($non_html_response);
   }
 
-  function nonHtmlResponseProvider() {
+  public function nonHtmlResponseProvider() {
     return [
       'AjaxResponse, which implements AttachmentsInterface' => [AjaxResponse::class],
       'A dummy that implements AttachmentsInterface' => [get_class($this->prophesize(AttachmentsInterface::class)->reveal())],
diff --git a/core/modules/block/src/EventSubscriber/BlockPageDisplayVariantSubscriber.php b/core/modules/block/src/EventSubscriber/BlockPageDisplayVariantSubscriber.php
index 5faf8b870ac94f7382b27348457d9ad8daa2887e..89f361f44048a9c326cd6752dbf1cd67735bed9c 100644
--- a/core/modules/block/src/EventSubscriber/BlockPageDisplayVariantSubscriber.php
+++ b/core/modules/block/src/EventSubscriber/BlockPageDisplayVariantSubscriber.php
@@ -26,7 +26,7 @@ public function onSelectPageDisplayVariant(PageDisplayVariantSelectionEvent $eve
   /**
    * {@inheritdoc}
    */
-  static function getSubscribedEvents() {
+  public static function getSubscribedEvents() {
     $events[RenderEvents::SELECT_PAGE_DISPLAY_VARIANT][] = ['onSelectPageDisplayVariant'];
     return $events;
   }
diff --git a/core/modules/block/src/Tests/BlockAdminThemeTest.php b/core/modules/block/src/Tests/BlockAdminThemeTest.php
index 7736e05362d52cc7f9120bd5be018afca15bbe1f..8773f0362043d50020a42ef9e952f3217476cff4 100644
--- a/core/modules/block/src/Tests/BlockAdminThemeTest.php
+++ b/core/modules/block/src/Tests/BlockAdminThemeTest.php
@@ -21,7 +21,7 @@ class BlockAdminThemeTest extends WebTestBase {
   /**
    * Check for the accessibility of the admin theme on the block admin page.
    */
-  function testAdminTheme() {
+  public function testAdminTheme() {
     // Create administrative user.
     $admin_user = $this->drupalCreateUser(['administer blocks', 'administer themes']);
     $this->drupalLogin($admin_user);
@@ -42,7 +42,7 @@ function testAdminTheme() {
   /**
    * Ensure contextual links are disabled in Seven theme.
    */
-  function testSevenAdminTheme() {
+  public function testSevenAdminTheme() {
     // Create administrative user.
     $admin_user = $this->drupalCreateUser([
       'access administration pages',
diff --git a/core/modules/block/src/Tests/BlockFormInBlockTest.php b/core/modules/block/src/Tests/BlockFormInBlockTest.php
index 59b5f5ff5de892e9d5142be7721f0d4516bf9a57..ebe43c8cef01dfe5fd119b1121c2ceaf1acabebe 100644
--- a/core/modules/block/src/Tests/BlockFormInBlockTest.php
+++ b/core/modules/block/src/Tests/BlockFormInBlockTest.php
@@ -33,7 +33,7 @@ protected function setUp() {
   /**
    * Test to see if form in block's redirect isn't cached.
    */
-  function testCachePerPage() {
+  public function testCachePerPage() {
     $form_values = ['email' => 'test@example.com'];
 
     // Go to "test-page" and test if the block is enabled.
diff --git a/core/modules/block/src/Tests/BlockRenderOrderTest.php b/core/modules/block/src/Tests/BlockRenderOrderTest.php
index d74a90afc474267fa12aec3fc8122876a4bb10ef..a7e26ded4e39558a467afcb3515870d24a7b5adf 100644
--- a/core/modules/block/src/Tests/BlockRenderOrderTest.php
+++ b/core/modules/block/src/Tests/BlockRenderOrderTest.php
@@ -31,7 +31,7 @@ protected function setUp() {
   /**
    * Tests the render order of the blocks.
    */
-  function testBlockRenderOrder() {
+  public function testBlockRenderOrder() {
     // Enable test blocks and place them in the same region.
     $region = 'header';
     $test_blocks = [
diff --git a/core/modules/block/src/Tests/BlockTest.php b/core/modules/block/src/Tests/BlockTest.php
index e6066c4fd270c0fe89accbc80be3bb72c66316f3..5910d4789a8b5fae074aec1fecf42495d279923f 100644
--- a/core/modules/block/src/Tests/BlockTest.php
+++ b/core/modules/block/src/Tests/BlockTest.php
@@ -18,7 +18,7 @@ class BlockTest extends BlockTestBase {
   /**
    * Tests block visibility.
    */
-  function testBlockVisibility() {
+  public function testBlockVisibility() {
     $block_name = 'system_powered_by_block';
     // Create a random title for the block.
     $title = $this->randomMachineName(8);
@@ -99,7 +99,7 @@ public function testBlockToggleVisibility() {
   /**
    * Test block visibility when leaving "pages" textarea empty.
    */
-  function testBlockVisibilityListedEmpty() {
+  public function testBlockVisibilityListedEmpty() {
     $block_name = 'system_powered_by_block';
     // Create a random title for the block.
     $title = $this->randomMachineName(8);
@@ -176,7 +176,7 @@ public function testAddBlockFromLibraryWithWeight() {
   /**
    * Test configuring and moving a module-define block to specific regions.
    */
-  function testBlock() {
+  public function testBlock() {
     // Place page title block to test error messages.
     $this->drupalPlaceBlock('page_title_block');
 
@@ -268,7 +268,7 @@ public function testBlockThemeSelector() {
   /**
    * Test block display of theme titles.
    */
-  function testThemeName() {
+  public function testThemeName() {
     // Enable the help block.
     $this->drupalPlaceBlock('help_block', ['region' => 'help']);
     $this->drupalPlaceBlock('local_tasks_block');
@@ -285,7 +285,7 @@ function testThemeName() {
   /**
    * Test block title display settings.
    */
-  function testHideBlockTitle() {
+  public function testHideBlockTitle() {
     $block_name = 'system_powered_by_block';
     // Create a random title for the block.
     $title = $this->randomMachineName(8);
@@ -328,7 +328,7 @@ function testHideBlockTitle() {
    *   The machine name of the theme region to move the block to, for example
    *   'header' or 'sidebar_first'.
    */
-  function moveBlockToRegion(array $block, $region) {
+  public function moveBlockToRegion(array $block, $region) {
     // Set the created block to a specific region.
     $block += ['theme' => $this->config('system.theme')->get('default')];
     $edit = [];
diff --git a/core/modules/block/src/Tests/BlockUiTest.php b/core/modules/block/src/Tests/BlockUiTest.php
index 5f18ae162b230b63285c9a25b9bbdd797399e5d3..899f9bba87617162b7baaf0f9a9fd49291e2660e 100644
--- a/core/modules/block/src/Tests/BlockUiTest.php
+++ b/core/modules/block/src/Tests/BlockUiTest.php
@@ -94,7 +94,7 @@ public function testBlockDemoUiPage() {
   /**
    * Test block admin page exists and functions correctly.
    */
-  function testBlockAdminUiPage() {
+  public function testBlockAdminUiPage() {
     // Visit the blocks admin ui.
     $this->drupalGet('admin/structure/block');
     // Look for the blocks table.
diff --git a/core/modules/block/src/Tests/NonDefaultBlockAdminTest.php b/core/modules/block/src/Tests/NonDefaultBlockAdminTest.php
index 9f3590c7fa53601562803757f9271dae3a370a83..fc2f33c0dad04f1260d246e3ba6bb3da00d39d08 100644
--- a/core/modules/block/src/Tests/NonDefaultBlockAdminTest.php
+++ b/core/modules/block/src/Tests/NonDefaultBlockAdminTest.php
@@ -30,7 +30,7 @@ protected function setUp() {
   /**
    * Test non-default theme admin.
    */
-  function testNonDefaultBlockAdmin() {
+  public function testNonDefaultBlockAdmin() {
     $admin_user = $this->drupalCreateUser(['administer blocks', 'administer themes']);
     $this->drupalLogin($admin_user);
     $new_theme = 'bartik';
diff --git a/core/modules/block/tests/src/Functional/BlockCacheTest.php b/core/modules/block/tests/src/Functional/BlockCacheTest.php
index 4ea433f76a85f590fd9af0692b09a7ee09b1b552..e5bb360e3e66060f88a7ea2f37d8b33945b74f03 100644
--- a/core/modules/block/tests/src/Functional/BlockCacheTest.php
+++ b/core/modules/block/tests/src/Functional/BlockCacheTest.php
@@ -69,7 +69,7 @@ protected function setUp() {
   /**
    * Test "user.roles" cache context.
    */
-  function testCachePerRole() {
+  public function testCachePerRole() {
     \Drupal::state()->set('block_test.cache_contexts', ['user.roles']);
 
     // Enable our test block. Set some content for it to display.
@@ -116,7 +116,7 @@ function testCachePerRole() {
   /**
    * Test a cacheable block without any additional cache context.
    */
-  function testCachePermissions() {
+  public function testCachePermissions() {
     // user.permissions is a required context, so a user with different
     // permissions will see a different version of the block.
     \Drupal::state()->set('block_test.cache_contexts', []);
@@ -142,7 +142,7 @@ function testCachePermissions() {
   /**
    * Test non-cacheable block.
    */
-  function testNoCache() {
+  public function testNoCache() {
     \Drupal::state()->set('block_test.cache_max_age', 0);
 
     $current_content = $this->randomMachineName();
@@ -162,7 +162,7 @@ function testNoCache() {
   /**
    * Test "user" cache context.
    */
-  function testCachePerUser() {
+  public function testCachePerUser() {
     \Drupal::state()->set('block_test.cache_contexts', ['user']);
 
     $current_content = $this->randomMachineName();
@@ -191,7 +191,7 @@ function testCachePerUser() {
   /**
    * Test "url" cache context.
    */
-  function testCachePerPage() {
+  public function testCachePerPage() {
     \Drupal::state()->set('block_test.cache_contexts', ['url']);
 
     $current_content = $this->randomMachineName();
diff --git a/core/modules/block/tests/src/Functional/BlockHtmlTest.php b/core/modules/block/tests/src/Functional/BlockHtmlTest.php
index 943699079630cda06a0e811e680d74857972879e..5f9afe916f7d15bfcc27700f3d041e2f39664205 100644
--- a/core/modules/block/tests/src/Functional/BlockHtmlTest.php
+++ b/core/modules/block/tests/src/Functional/BlockHtmlTest.php
@@ -35,7 +35,7 @@ protected function setUp() {
   /**
    * Tests for valid HTML for a block.
    */
-  function testHtml() {
+  public function testHtml() {
     $this->drupalGet('');
 
     // Ensure that a block's ID is converted to an HTML valid ID, and that
diff --git a/core/modules/block/tests/src/Functional/BlockInvalidRegionTest.php b/core/modules/block/tests/src/Functional/BlockInvalidRegionTest.php
index 9b18633d67527f9be2a6f782585a81a6befb70ff..fe8cdcb56a7884ab8911a4c7d9dc6f797c7f4db5 100644
--- a/core/modules/block/tests/src/Functional/BlockInvalidRegionTest.php
+++ b/core/modules/block/tests/src/Functional/BlockInvalidRegionTest.php
@@ -34,7 +34,7 @@ protected function setUp() {
   /**
    * Tests that blocks assigned to invalid regions work correctly.
    */
-  function testBlockInInvalidRegion() {
+  public function testBlockInInvalidRegion() {
     // Enable a test block and place it in an invalid region.
     $block = $this->drupalPlaceBlock('test_html');
     \Drupal::configFactory()->getEditable('block.block.' . $block->id())->set('region', 'invalid_region')->save();
diff --git a/core/modules/block/tests/src/Functional/BlockTemplateSuggestionsTest.php b/core/modules/block/tests/src/Functional/BlockTemplateSuggestionsTest.php
index 61a37454200ec35cec5eaa7eb7d00e03879944f1..fd4fd5138cda84879a508a1037cb528e81e4ffe0 100644
--- a/core/modules/block/tests/src/Functional/BlockTemplateSuggestionsTest.php
+++ b/core/modules/block/tests/src/Functional/BlockTemplateSuggestionsTest.php
@@ -22,7 +22,7 @@ class BlockTemplateSuggestionsTest extends BrowserTestBase {
   /**
    * Tests template suggestions from block_theme_suggestions_block().
    */
-  function testBlockThemeHookSuggestions() {
+  public function testBlockThemeHookSuggestions() {
     // Define a block with a derivative to be preprocessed, which includes both
     // an underscore (not transformed) and a hyphen (transformed to underscore),
     // and generates possibilities for each level of derivative.
diff --git a/core/modules/block/tests/src/Functional/NewDefaultThemeBlocksTest.php b/core/modules/block/tests/src/Functional/NewDefaultThemeBlocksTest.php
index 767a7da590051ee815a2a08aa0fbe6b3086b2652..adc7da3f1fd355847d04a0e67fdb89d2ebb00125 100644
--- a/core/modules/block/tests/src/Functional/NewDefaultThemeBlocksTest.php
+++ b/core/modules/block/tests/src/Functional/NewDefaultThemeBlocksTest.php
@@ -21,7 +21,7 @@ class NewDefaultThemeBlocksTest extends BrowserTestBase {
   /**
    * Check the enabled Bartik blocks are correctly copied over.
    */
-  function testNewDefaultThemeBlocks() {
+  public function testNewDefaultThemeBlocks() {
     $default_theme = $this->config('system.theme')->get('default');
 
     // Add two instances of the user login block.
diff --git a/core/modules/block_content/src/Tests/Views/BlockContentFieldFilterTest.php b/core/modules/block_content/src/Tests/Views/BlockContentFieldFilterTest.php
index 905a7a0053ef5fc4805b3adbca4d3429b3c3feef..1ff4fb55baf74daf117f430b31df552611d28c82 100644
--- a/core/modules/block_content/src/Tests/Views/BlockContentFieldFilterTest.php
+++ b/core/modules/block_content/src/Tests/Views/BlockContentFieldFilterTest.php
@@ -35,7 +35,7 @@ class BlockContentFieldFilterTest extends BlockContentTestBase {
   /**
    * {@inheritdoc}
    */
-  function setUp() {
+  public function setUp() {
     parent::setUp();
 
     // Add two new languages.
diff --git a/core/modules/book/src/Plugin/Block/BookNavigationBlock.php b/core/modules/book/src/Plugin/Block/BookNavigationBlock.php
index 7b0156f2405efff68ba98df8954827b8d2c86cc0..e55fe365256f038c29652948025cfa6fbb1c4197 100644
--- a/core/modules/book/src/Plugin/Block/BookNavigationBlock.php
+++ b/core/modules/book/src/Plugin/Block/BookNavigationBlock.php
@@ -94,7 +94,7 @@ public function defaultConfiguration() {
   /**
    * {@inheritdoc}
    */
-  function blockForm($form, FormStateInterface $form_state) {
+  public function blockForm($form, FormStateInterface $form_state) {
     $options = [
       'all pages' => $this->t('Show block on all pages'),
       'book pages' => $this->t('Show block only on book pages'),
diff --git a/core/modules/book/src/Tests/BookTest.php b/core/modules/book/src/Tests/BookTest.php
index 183674fa4aa6f12eada41dc50fa0882335899658..05cc2fa7bce15239d3ea9adf49f2e6d9cf586be1 100644
--- a/core/modules/book/src/Tests/BookTest.php
+++ b/core/modules/book/src/Tests/BookTest.php
@@ -80,7 +80,7 @@ protected function setUp() {
    *
    * @return \Drupal\node\NodeInterface[]
    */
-  function createBook() {
+  public function createBook() {
     // Create new book.
     $this->drupalLogin($this->bookAuthor);
 
@@ -151,7 +151,7 @@ public function testBookNavigationCacheContext() {
   /**
    * Tests saving the book outline on an empty book.
    */
-  function testEmptyBook() {
+  public function testEmptyBook() {
     // Create a new empty book.
     $this->drupalLogin($this->bookAuthor);
     $book = $this->createBookNode('new');
@@ -166,7 +166,7 @@ function testEmptyBook() {
   /**
    * Tests book functionality through node interfaces.
    */
-  function testBook() {
+  public function testBook() {
     // Create new book.
     $nodes = $this->createBook();
     $book = $this->book;
@@ -247,7 +247,7 @@ function testBook() {
    * @param array $breadcrumb
    *   The nodes that should be displayed in the breadcrumb.
    */
-  function checkBookNode(EntityInterface $node, $nodes, $previous = FALSE, $up = FALSE, $next = FALSE, array $breadcrumb) {
+  public function checkBookNode(EntityInterface $node, $nodes, $previous = FALSE, $up = FALSE, $next = FALSE, array $breadcrumb) {
     // $number does not use drupal_static as it should not be reset
     // since it uniquely identifies each call to checkBookNode().
     static $number = 0;
@@ -319,7 +319,7 @@ function checkBookNode(EntityInterface $node, $nodes, $previous = FALSE, $up = F
    * @return string
    *   A regular expression that locates sub-nodes of the outline.
    */
-  function generateOutlinePattern($nodes) {
+  public function generateOutlinePattern($nodes) {
     $outline = '';
     foreach ($nodes as $node) {
       $outline .= '(node\/' . $node->id() . ')(.*?)(' . $node->label() . ')(.*?)';
@@ -339,7 +339,7 @@ function generateOutlinePattern($nodes) {
    * @return \Drupal\node\NodeInterface
    *   The created node.
    */
-  function createBookNode($book_nid, $parent = NULL) {
+  public function createBookNode($book_nid, $parent = NULL) {
     // $number does not use drupal_static as it should not be reset
     // since it uniquely identifies each call to createBookNode().
     static $number = 0; // Used to ensure that when sorted nodes stay in same order.
@@ -373,7 +373,7 @@ function createBookNode($book_nid, $parent = NULL) {
   /**
    * Tests book export ("printer-friendly version") functionality.
    */
-  function testBookExport() {
+  public function testBookExport() {
     // Create a book.
     $nodes = $this->createBook();
 
@@ -418,7 +418,7 @@ function testBookExport() {
   /**
    * Tests the functionality of the book navigation block.
    */
-  function testBookNavigationBlock() {
+  public function testBookNavigationBlock() {
     $this->drupalLogin($this->adminUser);
 
     // Enable the block.
@@ -495,7 +495,7 @@ public function testGetTableOfContents() {
   /**
    * Tests the book navigation block when an access module is installed.
    */
-  function testNavigationBlockOnAccessModuleInstalled() {
+  public function testNavigationBlockOnAccessModuleInstalled() {
     $this->drupalLogin($this->adminUser);
     $block = $this->drupalPlaceBlock('book_navigation', ['block_mode' => 'book pages']);
 
@@ -526,7 +526,7 @@ function testNavigationBlockOnAccessModuleInstalled() {
   /**
    * Tests the access for deleting top-level book nodes.
    */
-  function testBookDelete() {
+  public function testBookDelete() {
     $node_storage = $this->container->get('entity.manager')->getStorage('node');
     $nodes = $this->createBook();
     $this->drupalLogin($this->adminUser);
diff --git a/core/modules/ckeditor/src/CKEditorPluginBase.php b/core/modules/ckeditor/src/CKEditorPluginBase.php
index 99f26630f23ccf1a1632fddf6b28e858f8f5ddab..af284fc71bfc7def0b70f07568aa7a5ad51b6924 100644
--- a/core/modules/ckeditor/src/CKEditorPluginBase.php
+++ b/core/modules/ckeditor/src/CKEditorPluginBase.php
@@ -33,21 +33,21 @@ abstract class CKEditorPluginBase extends PluginBase implements CKEditorPluginIn
   /**
    * {@inheritdoc}
    */
-  function isInternal() {
+  public function isInternal() {
     return FALSE;
   }
 
   /**
    * {@inheritdoc}
    */
-  function getDependencies(Editor $editor) {
+  public function getDependencies(Editor $editor) {
     return [];
   }
 
   /**
    * {@inheritdoc}
    */
-  function getLibraries(Editor $editor) {
+  public function getLibraries(Editor $editor) {
     return [];
   }
 
diff --git a/core/modules/ckeditor/src/Plugin/CKEditorPlugin/DrupalImage.php b/core/modules/ckeditor/src/Plugin/CKEditorPlugin/DrupalImage.php
index 90d4eae8f4792612653b261e436fe71d02d7f921..587cf85e7811fd98513361f0df515dfcc50a8f03 100644
--- a/core/modules/ckeditor/src/Plugin/CKEditorPlugin/DrupalImage.php
+++ b/core/modules/ckeditor/src/Plugin/CKEditorPlugin/DrupalImage.php
@@ -79,7 +79,7 @@ public function settingsForm(array $form, FormStateInterface $form_state, Editor
    * @see \Drupal\editor\Form\EditorImageDialog
    * @see editor_image_upload_settings_form()
    */
-  function validateImageUploadSettings(array $element, FormStateInterface $form_state) {
+  public function validateImageUploadSettings(array $element, FormStateInterface $form_state) {
     $settings = &$form_state->getValue(['editor', 'settings', 'plugins', 'drupalimage', 'image_upload']);
     $form_state->get('editor')->setImageUploadSettings($settings);
     $form_state->unsetValue(['editor', 'settings', 'plugins', 'drupalimage']);
diff --git a/core/modules/ckeditor/src/Plugin/CKEditorPlugin/DrupalImageCaption.php b/core/modules/ckeditor/src/Plugin/CKEditorPlugin/DrupalImageCaption.php
index 4241c3ca027833e8555acd1dbc564b0c2ac8bd8b..64e764ebf565652e521e7a3728881e1e03864364 100644
--- a/core/modules/ckeditor/src/Plugin/CKEditorPlugin/DrupalImageCaption.php
+++ b/core/modules/ckeditor/src/Plugin/CKEditorPlugin/DrupalImageCaption.php
@@ -77,7 +77,7 @@ public function getCssFiles(Editor $editor) {
   /**
    * {@inheritdoc}
    */
-  function isEnabled(Editor $editor) {
+  public function isEnabled(Editor $editor) {
     if (!$editor->hasAssociatedFilterFormat()) {
       return FALSE;
     }
diff --git a/core/modules/ckeditor/src/Plugin/CKEditorPlugin/Language.php b/core/modules/ckeditor/src/Plugin/CKEditorPlugin/Language.php
index 31ce08fc07aab845915825d43d787be5876f8eb3..ffae4096cf28a2410f8def7bd27d5735d6e97cd7 100644
--- a/core/modules/ckeditor/src/Plugin/CKEditorPlugin/Language.php
+++ b/core/modules/ckeditor/src/Plugin/CKEditorPlugin/Language.php
@@ -126,7 +126,7 @@ public function settingsForm(array $form, FormStateInterface $form_state, Editor
   /**
    * {@inheritdoc}
    */
-  function getCssFiles(Editor $editor) {
+  public function getCssFiles(Editor $editor) {
     return [
         drupal_get_path('module', 'ckeditor') . '/css/plugins/language/ckeditor.language.css'
     ];
diff --git a/core/modules/ckeditor/src/Tests/CKEditorAdminTest.php b/core/modules/ckeditor/src/Tests/CKEditorAdminTest.php
index 3541f0ff486b2d45bab1970541f5e5eeb58f1920..669dc5f85104e54399d12ef0066ddfb9edf22139 100644
--- a/core/modules/ckeditor/src/Tests/CKEditorAdminTest.php
+++ b/core/modules/ckeditor/src/Tests/CKEditorAdminTest.php
@@ -48,7 +48,7 @@ protected function setUp() {
   /**
    * Tests configuring a text editor for an existing text format.
    */
-  function testExistingFormat() {
+  public function testExistingFormat() {
     $ckeditor = $this->container->get('plugin.manager.editor')->createInstance('ckeditor');
 
     $this->drupalLogin($this->adminUser);
@@ -222,7 +222,7 @@ function testExistingFormat() {
    * This test only needs to ensure that the basics of the CKEditor
    * configuration form work; details are tested in testExistingFormat().
    */
-  function testNewFormat() {
+  public function testNewFormat() {
     $this->drupalLogin($this->adminUser);
     $this->drupalGet('admin/config/content/formats/add');
 
diff --git a/core/modules/ckeditor/src/Tests/CKEditorLoadingTest.php b/core/modules/ckeditor/src/Tests/CKEditorLoadingTest.php
index 2f5052bd2779d63e9a5eb39ba8e07e7e6ef6341e..438aeba289326f5b73a19e4ff6a767aa95eeb923 100644
--- a/core/modules/ckeditor/src/Tests/CKEditorLoadingTest.php
+++ b/core/modules/ckeditor/src/Tests/CKEditorLoadingTest.php
@@ -74,7 +74,7 @@ protected function setUp() {
   /**
    * Tests loading of CKEditor CSS, JS and JS settings.
    */
-  function testLoading() {
+  public function testLoading() {
     // The untrusted user:
     // - has access to 1 text format (plain_text);
     // - doesn't have access to the filtered_html text format, so: no text editor.
@@ -197,7 +197,7 @@ public function testLoadingWithoutInternalButtons() {
   /**
    * Tests loading of theme's CKEditor stylesheets defined in the .info file.
    */
-  function testExternalStylesheets() {
+  public function testExternalStylesheets() {
     $theme_handler = \Drupal::service('theme_handler');
     // Case 1: Install theme which has an absolute external CSS URL.
     $theme_handler->install(['test_ckeditor_stylesheets_external']);
diff --git a/core/modules/ckeditor/src/Tests/CKEditorStylesComboAdminTest.php b/core/modules/ckeditor/src/Tests/CKEditorStylesComboAdminTest.php
index d70980ef410f7d15f64ef94a3664951a0e35ff8d..1a2f7679b84725d41d017658168a95ffc33f70ba 100644
--- a/core/modules/ckeditor/src/Tests/CKEditorStylesComboAdminTest.php
+++ b/core/modules/ckeditor/src/Tests/CKEditorStylesComboAdminTest.php
@@ -59,7 +59,7 @@ protected function setUp() {
   /**
    * Tests StylesCombo settings for an existing text format.
    */
-  function testExistingFormat() {
+  public function testExistingFormat() {
     $ckeditor = $this->container->get('plugin.manager.editor')->createInstance('ckeditor');
     $default_settings = $ckeditor->getDefaultSettings();
 
diff --git a/core/modules/ckeditor/tests/modules/src/Kernel/CKEditorPluginManagerTest.php b/core/modules/ckeditor/tests/modules/src/Kernel/CKEditorPluginManagerTest.php
index fc79273487e091ce7223448e9cf24bbd9d76cce3..eb02d37adad14ad526b429c3e2abf568c2445fee 100644
--- a/core/modules/ckeditor/tests/modules/src/Kernel/CKEditorPluginManagerTest.php
+++ b/core/modules/ckeditor/tests/modules/src/Kernel/CKEditorPluginManagerTest.php
@@ -50,7 +50,7 @@ protected function setUp() {
   /**
    * Tests the enabling of plugins.
    */
-  function testEnabledPlugins() {
+  public function testEnabledPlugins() {
     $this->manager = $this->container->get('plugin.manager.ckeditor.plugin');
     $editor = Editor::load('filtered_html');
 
@@ -132,7 +132,7 @@ function testEnabledPlugins() {
   /**
    * Tests the iframe instance CSS files of plugins.
    */
-  function testCssFiles() {
+  public function testCssFiles() {
     $this->manager = $this->container->get('plugin.manager.ckeditor.plugin');
     $editor = Editor::load('filtered_html');
 
diff --git a/core/modules/ckeditor/tests/modules/src/Kernel/CKEditorTest.php b/core/modules/ckeditor/tests/modules/src/Kernel/CKEditorTest.php
index 4bfda7e46b5a57805bd78bae0cc06ef0baf85301..4fbead9a3565cdfc96b3a5c2301d9c0b1acce8eb 100644
--- a/core/modules/ckeditor/tests/modules/src/Kernel/CKEditorTest.php
+++ b/core/modules/ckeditor/tests/modules/src/Kernel/CKEditorTest.php
@@ -68,7 +68,7 @@ protected function setUp() {
   /**
    * Tests CKEditor::getJSSettings().
    */
-  function testGetJSSettings() {
+  public function testGetJSSettings() {
     $editor = Editor::load('filtered_html');
 
     // Default toolbar.
@@ -216,7 +216,7 @@ function testGetJSSettings() {
   /**
    * Tests CKEditor::buildToolbarJSSetting().
    */
-  function testBuildToolbarJSSetting() {
+  public function testBuildToolbarJSSetting() {
     $editor = Editor::load('filtered_html');
 
     // Default toolbar.
@@ -247,7 +247,7 @@ function testBuildToolbarJSSetting() {
   /**
    * Tests CKEditor::buildContentsCssJSSetting().
    */
-  function testBuildContentsCssJSSetting() {
+  public function testBuildContentsCssJSSetting() {
     $editor = Editor::load('filtered_html');
 
     // Default toolbar.
@@ -284,7 +284,7 @@ function testBuildContentsCssJSSetting() {
   /**
    * Tests Internal::getConfig().
    */
-  function testInternalGetConfig() {
+  public function testInternalGetConfig() {
     $editor = Editor::load('filtered_html');
     $internal_plugin = $this->container->get('plugin.manager.ckeditor.plugin')->createInstance('internal');
 
@@ -305,7 +305,7 @@ function testInternalGetConfig() {
   /**
    * Tests StylesCombo::getConfig().
    */
-  function testStylesComboGetConfig() {
+  public function testStylesComboGetConfig() {
     $editor = Editor::load('filtered_html');
     $stylescombo_plugin = $this->container->get('plugin.manager.ckeditor.plugin')->createInstance('stylescombo');
 
@@ -364,7 +364,7 @@ function testStylesComboGetConfig() {
   /**
    * Tests language list availability in CKEditor.
    */
-  function testLanguages() {
+  public function testLanguages() {
     // Get CKEditor supported language codes and spot-check.
     $this->enableModules(['language']);
     $this->installConfig(['language']);
@@ -389,7 +389,7 @@ function testLanguages() {
   /**
    * Tests that CKEditor plugins participate in JS translation.
    */
-  function testJSTranslation() {
+  public function testJSTranslation() {
     $this->enableModules(['language', 'locale']);
     $this->installSchema('locale', 'locales_source');
     $this->installSchema('locale', 'locales_location');
diff --git a/core/modules/ckeditor/tests/modules/src/Plugin/CKEditorPlugin/Llama.php b/core/modules/ckeditor/tests/modules/src/Plugin/CKEditorPlugin/Llama.php
index 012579de89de552970cf7e61f0645076b720560f..3b8951caec91ff98349365371580a0d90c4135bf 100644
--- a/core/modules/ckeditor/tests/modules/src/Plugin/CKEditorPlugin/Llama.php
+++ b/core/modules/ckeditor/tests/modules/src/Plugin/CKEditorPlugin/Llama.php
@@ -29,28 +29,28 @@ class Llama extends PluginBase implements CKEditorPluginInterface {
   /**
    * {@inheritdoc}
    */
-  function getDependencies(Editor $editor) {
+  public function getDependencies(Editor $editor) {
     return [];
   }
 
   /**
    * {@inheritdoc}
    */
-  function getLibraries(Editor $editor) {
+  public function getLibraries(Editor $editor) {
     return [];
   }
 
   /**
    * {@inheritdoc}
    */
-  function isInternal() {
+  public function isInternal() {
     return FALSE;
   }
 
   /**
    * {@inheritdoc}
    */
-  function getFile() {
+  public function getFile() {
     return drupal_get_path('module', 'ckeditor_test') . '/js/llama.js';
   }
 
diff --git a/core/modules/ckeditor/tests/modules/src/Plugin/CKEditorPlugin/LlamaButton.php b/core/modules/ckeditor/tests/modules/src/Plugin/CKEditorPlugin/LlamaButton.php
index 4568192e03dd535f32d61b9b7e1b530ba8aa4a5a..b357811c06c37f1bec0f987e8f9d41b3fa322c8f 100644
--- a/core/modules/ckeditor/tests/modules/src/Plugin/CKEditorPlugin/LlamaButton.php
+++ b/core/modules/ckeditor/tests/modules/src/Plugin/CKEditorPlugin/LlamaButton.php
@@ -17,7 +17,7 @@ class LlamaButton extends Llama implements CKEditorPluginButtonsInterface {
   /**
    * {@inheritdoc}
    */
-  function getButtons() {
+  public function getButtons() {
     return [
       'Llama' => [
         'label' => t('Insert Llama'),
@@ -28,7 +28,7 @@ function getButtons() {
   /**
    * {@inheritdoc}
    */
-  function getFile() {
+  public function getFile() {
     return drupal_get_path('module', 'ckeditor_test') . '/js/llama_button.js';
   }
 
diff --git a/core/modules/ckeditor/tests/modules/src/Plugin/CKEditorPlugin/LlamaContextual.php b/core/modules/ckeditor/tests/modules/src/Plugin/CKEditorPlugin/LlamaContextual.php
index 01cb992625c88b4bbb43619542591653c7c1b752..5ece17acadf9e1c9d03ae5ae07376e1b1cfa588e 100644
--- a/core/modules/ckeditor/tests/modules/src/Plugin/CKEditorPlugin/LlamaContextual.php
+++ b/core/modules/ckeditor/tests/modules/src/Plugin/CKEditorPlugin/LlamaContextual.php
@@ -18,7 +18,7 @@ class LlamaContextual extends Llama implements CKEditorPluginContextualInterface
   /**
    * {@inheritdoc}
    */
-  function isEnabled(Editor $editor) {
+  public function isEnabled(Editor $editor) {
     // Automatically enable this plugin if the Underline button is enabled.
     $settings = $editor->getSettings();
     foreach ($settings['toolbar']['rows'] as $row) {
@@ -34,7 +34,7 @@ function isEnabled(Editor $editor) {
   /**
    * {@inheritdoc}
    */
-  function getFile() {
+  public function getFile() {
     return drupal_get_path('module', 'ckeditor_test') . '/js/llama_contextual.js';
   }
 
diff --git a/core/modules/ckeditor/tests/modules/src/Plugin/CKEditorPlugin/LlamaContextualAndButton.php b/core/modules/ckeditor/tests/modules/src/Plugin/CKEditorPlugin/LlamaContextualAndButton.php
index 5e1955fbd302fab440c7f025189e9b8e994fe8b9..2894fc905f367c40f2de92d18d352ccb7da29873 100644
--- a/core/modules/ckeditor/tests/modules/src/Plugin/CKEditorPlugin/LlamaContextualAndButton.php
+++ b/core/modules/ckeditor/tests/modules/src/Plugin/CKEditorPlugin/LlamaContextualAndButton.php
@@ -22,7 +22,7 @@ class LlamaContextualAndButton extends Llama implements CKEditorPluginContextual
   /**
    * {@inheritdoc}
    */
-  function isEnabled(Editor $editor) {
+  public function isEnabled(Editor $editor) {
     // Automatically enable this plugin if the Strike button is enabled.
     $settings = $editor->getSettings();
     foreach ($settings['toolbar']['rows'] as $row) {
@@ -38,7 +38,7 @@ function isEnabled(Editor $editor) {
   /**
    * {@inheritdoc}
    */
-  function getButtons() {
+  public function getButtons() {
     return [
       'Llama' => [
         'label' => t('Insert Llama'),
@@ -49,14 +49,14 @@ function getButtons() {
   /**
    * {@inheritdoc}
    */
-  function getFile() {
+  public function getFile() {
     return drupal_get_path('module', 'ckeditor_test') . '/js/llama_contextual_and_button.js';
   }
 
   /**
    * {@inheritdoc}
    */
-  function settingsForm(array $form, FormStateInterface $form_state, Editor $editor) {
+  public function settingsForm(array $form, FormStateInterface $form_state, Editor $editor) {
     // Defaults.
     $config = ['ultra_llama_mode' => FALSE];
     $settings = $editor->getSettings();
diff --git a/core/modules/ckeditor/tests/modules/src/Plugin/CKEditorPlugin/LlamaCss.php b/core/modules/ckeditor/tests/modules/src/Plugin/CKEditorPlugin/LlamaCss.php
index d3b9a7f6235cdbf4d4ab6a6b85c01775084174bd..e0901dc84ff706a65fd535d39734ea577ab599a2 100644
--- a/core/modules/ckeditor/tests/modules/src/Plugin/CKEditorPlugin/LlamaCss.php
+++ b/core/modules/ckeditor/tests/modules/src/Plugin/CKEditorPlugin/LlamaCss.php
@@ -19,7 +19,7 @@ class LlamaCss extends Llama implements CKEditorPluginButtonsInterface, CKEditor
   /**
    * {@inheritdoc}
    */
-  function getButtons() {
+  public function getButtons() {
     return [
       'LlamaCSS' => [
         'label' => t('Insert Llama CSS'),
@@ -30,7 +30,7 @@ function getButtons() {
   /**
    * {@inheritdoc}
    */
-  function getCssFiles(Editor $editor) {
+  public function getCssFiles(Editor $editor) {
     return [
       drupal_get_path('module', 'ckeditor_test') . '/css/llama.css'
     ];
@@ -39,7 +39,7 @@ function getCssFiles(Editor $editor) {
   /**
    * {@inheritdoc}
    */
-  function getFile() {
+  public function getFile() {
     return drupal_get_path('module', 'ckeditor_test') . '/js/llama_css.js';
   }
 
diff --git a/core/modules/color/tests/src/Functional/ColorConfigSchemaTest.php b/core/modules/color/tests/src/Functional/ColorConfigSchemaTest.php
index e55275deb78fbc01f7c4ef64914d104d582a0a4d..f93f3587b1fe77994868507a956b45736fef6951 100644
--- a/core/modules/color/tests/src/Functional/ColorConfigSchemaTest.php
+++ b/core/modules/color/tests/src/Functional/ColorConfigSchemaTest.php
@@ -40,7 +40,7 @@ protected function setUp() {
   /**
    * Tests whether the color config schema is valid.
    */
-  function testValidColorConfigSchema() {
+  public function testValidColorConfigSchema() {
     $settings_path = 'admin/appearance/settings/bartik';
     $edit['scheme'] = '';
     $edit['palette[bg]'] = '#123456';
diff --git a/core/modules/color/tests/src/Functional/ColorSafePreviewTest.php b/core/modules/color/tests/src/Functional/ColorSafePreviewTest.php
index e80202fd79591c3f2c4c45fe2a790a17d8be6dea..9f6914c996c003c9048938d7bb85b849b08d3066 100644
--- a/core/modules/color/tests/src/Functional/ColorSafePreviewTest.php
+++ b/core/modules/color/tests/src/Functional/ColorSafePreviewTest.php
@@ -39,7 +39,7 @@ protected function setUp() {
   /**
    * Ensures color preview.html is sanitized.
    */
-  function testColorPreview() {
+  public function testColorPreview() {
     // Install the color test theme.
     \Drupal::service('theme_handler')->install(['color_test_theme']);
     $this->drupalLogin($this->bigUser);
diff --git a/core/modules/color/tests/src/Functional/ColorTest.php b/core/modules/color/tests/src/Functional/ColorTest.php
index 8416913396deb5ec22ca8e1544f21e9d3699ed8e..11ff1e737fbb4d2be39a31d655e8f1463c2b02a2 100644
--- a/core/modules/color/tests/src/Functional/ColorTest.php
+++ b/core/modules/color/tests/src/Functional/ColorTest.php
@@ -84,7 +84,7 @@ protected function setUp() {
   /**
    * Tests the Color module functionality.
    */
-  function testColor() {
+  public function testColor() {
     foreach ($this->themes as $theme => $test_values) {
       $this->_testColor($theme, $test_values);
     }
@@ -99,7 +99,7 @@ function testColor() {
    *   An associative array of test settings (i.e. 'Main background', 'Text
    *   color', 'Color set', etc) for the theme which being tested.
    */
-  function _testColor($theme, $test_values) {
+  public function _testColor($theme, $test_values) {
     $this->config('system.theme')
       ->set('default', $theme)
       ->save();
@@ -151,7 +151,7 @@ function _testColor($theme, $test_values) {
   /**
    * Tests whether the provided color is valid.
    */
-  function testValidColor() {
+  public function testValidColor() {
     $this->config('system.theme')
       ->set('default', 'bartik')
       ->save();
@@ -176,7 +176,7 @@ function testValidColor() {
   /**
    * Test whether the custom logo is used in the color preview.
    */
-  function testLogoSettingOverride() {
+  public function testLogoSettingOverride() {
     $this->drupalLogin($this->bigUser);
     $edit = [
       'default_logo' => FALSE,
@@ -192,7 +192,7 @@ function testLogoSettingOverride() {
   /**
    * Test whether the scheme can be set, viewed anonymously and reset.
    */
-  function testOverrideAndResetScheme() {
+  public function testOverrideAndResetScheme() {
     $settings_path = 'admin/appearance/settings/bartik';
     $this->config('system.theme')
       ->set('default', 'bartik')
diff --git a/core/modules/comment/src/Plugin/views/argument/UserUid.php b/core/modules/comment/src/Plugin/views/argument/UserUid.php
index 1fc59929df0d273a93992a080585692b57eb6929..7023102d8326a7fa62126da4f8163c37284e64e5 100644
--- a/core/modules/comment/src/Plugin/views/argument/UserUid.php
+++ b/core/modules/comment/src/Plugin/views/argument/UserUid.php
@@ -49,7 +49,7 @@ public static function create(ContainerInterface $container, array $configuratio
     return new static($configuration, $plugin_id, $plugin_definition, $container->get('database'));
   }
 
-  function title() {
+  public function title() {
     if (!$this->argument) {
       $title = \Drupal::config('user.settings')->get('anonymous');
     }
diff --git a/core/modules/comment/src/Tests/CommentActionsTest.php b/core/modules/comment/src/Tests/CommentActionsTest.php
index 8b741e79272a89d93202f2551141e995b71a0d38..56d34e4a597c19e072dcdebc49f57a901217863d 100644
--- a/core/modules/comment/src/Tests/CommentActionsTest.php
+++ b/core/modules/comment/src/Tests/CommentActionsTest.php
@@ -22,7 +22,7 @@ class CommentActionsTest extends CommentTestBase {
   /**
    * Tests comment publish and unpublish actions.
    */
-  function testCommentPublishUnpublishActions() {
+  public function testCommentPublishUnpublishActions() {
     $this->drupalLogin($this->webUser);
     $comment_text = $this->randomMachineName();
     $subject = $this->randomMachineName();
@@ -42,7 +42,7 @@ function testCommentPublishUnpublishActions() {
   /**
    * Tests the unpublish comment by keyword action.
    */
-  function testCommentUnpublishByKeyword() {
+  public function testCommentUnpublishByKeyword() {
     $this->drupalLogin($this->adminUser);
     $keyword_1 = $this->randomMachineName();
     $keyword_2 = $this->randomMachineName();
diff --git a/core/modules/comment/src/Tests/CommentAdminTest.php b/core/modules/comment/src/Tests/CommentAdminTest.php
index 74e6e459691371ba9ec66086b24256cf08ab84d4..980ad30a2601dd92b8cbd72c3cdeed2a3123d4be 100644
--- a/core/modules/comment/src/Tests/CommentAdminTest.php
+++ b/core/modules/comment/src/Tests/CommentAdminTest.php
@@ -21,7 +21,7 @@ protected function setUp() {
   /**
    * Test comment approval functionality through admin/content/comment.
    */
-  function testApprovalAdminInterface() {
+  public function testApprovalAdminInterface() {
     // Set anonymous comments to require approval.
     user_role_change_permissions(RoleInterface::ANONYMOUS_ID, [
       'access comments' => TRUE,
@@ -103,7 +103,7 @@ function testApprovalAdminInterface() {
   /**
    * Tests comment approval functionality through the node interface.
    */
-  function testApprovalNodeInterface() {
+  public function testApprovalNodeInterface() {
     // Set anonymous comments to require approval.
     user_role_change_permissions(RoleInterface::ANONYMOUS_ID, [
       'access comments' => TRUE,
diff --git a/core/modules/comment/src/Tests/CommentAnonymousTest.php b/core/modules/comment/src/Tests/CommentAnonymousTest.php
index 7c94e5af87110f5c80a19502319641d849944739..d60c0739f3aa46a3533951f13b0f66d3a753915c 100644
--- a/core/modules/comment/src/Tests/CommentAnonymousTest.php
+++ b/core/modules/comment/src/Tests/CommentAnonymousTest.php
@@ -30,7 +30,7 @@ protected function setUp() {
   /**
    * Tests anonymous comment functionality.
    */
-  function testAnonymous() {
+  public function testAnonymous() {
     $this->drupalLogin($this->adminUser);
     $this->setCommentAnonymous(COMMENT_ANONYMOUS_MAYNOT_CONTACT);
     $this->drupalLogout();
diff --git a/core/modules/comment/src/Tests/CommentBlockTest.php b/core/modules/comment/src/Tests/CommentBlockTest.php
index fca7223a41c45a29ecff06fb7ca50e192611f36d..37cc5de6209bdabba9b78635abd8c3a11f6eca0b 100644
--- a/core/modules/comment/src/Tests/CommentBlockTest.php
+++ b/core/modules/comment/src/Tests/CommentBlockTest.php
@@ -36,7 +36,7 @@ protected function setUp() {
   /**
    * Tests the recent comments block.
    */
-  function testRecentCommentBlock() {
+  public function testRecentCommentBlock() {
     $this->drupalLogin($this->adminUser);
     $block = $this->drupalPlaceBlock('views_block:comments_recent-block_1');
 
diff --git a/core/modules/comment/src/Tests/CommentCSSTest.php b/core/modules/comment/src/Tests/CommentCSSTest.php
index 3c48f698cda62140f2ed5d7975b87cf365e8dfa9..b50e9527a012cef54bd654726895cbf1844af977 100644
--- a/core/modules/comment/src/Tests/CommentCSSTest.php
+++ b/core/modules/comment/src/Tests/CommentCSSTest.php
@@ -27,7 +27,7 @@ protected function setUp() {
   /**
    * Tests CSS classes on comments.
    */
-  function testCommentClasses() {
+  public function testCommentClasses() {
     // Create all permutations for comments, users, and nodes.
     $parameters = [
       'node_uid' => [0, $this->webUser->id()],
diff --git a/core/modules/comment/src/Tests/CommentFieldsTest.php b/core/modules/comment/src/Tests/CommentFieldsTest.php
index fa8a72a6a8ad3d9bb3eb046ee791667c60c4ae99..a463314a72236aec04015cdeacc501cce4810637 100644
--- a/core/modules/comment/src/Tests/CommentFieldsTest.php
+++ b/core/modules/comment/src/Tests/CommentFieldsTest.php
@@ -24,7 +24,7 @@ class CommentFieldsTest extends CommentTestBase {
   /**
    * Tests that the default 'comment_body' field is correctly added.
    */
-  function testCommentDefaultFields() {
+  public function testCommentDefaultFields() {
     // Do not make assumptions on default node types created by the test
     // installation profile, and create our own.
     $this->drupalCreateContentType(['type' => 'test_node_type']);
@@ -183,7 +183,7 @@ public function testCommentFieldCreate() {
   /**
    * Tests that comment module works when installed after a content module.
    */
-  function testCommentInstallAfterContentModule() {
+  public function testCommentInstallAfterContentModule() {
     // Create a user to do module administration.
     $this->adminUser = $this->drupalCreateUser(['access administration pages', 'administer modules']);
     $this->drupalLogin($this->adminUser);
diff --git a/core/modules/comment/src/Tests/CommentLanguageTest.php b/core/modules/comment/src/Tests/CommentLanguageTest.php
index b047b403410a2857049037b582a8b49f495dd6df..eee0862ec6d22313db8c0098ad52f589107ceef9 100644
--- a/core/modules/comment/src/Tests/CommentLanguageTest.php
+++ b/core/modules/comment/src/Tests/CommentLanguageTest.php
@@ -76,7 +76,7 @@ protected function setUp() {
   /**
    * Test that comment language is properly set.
    */
-  function testCommentLanguage() {
+  public function testCommentLanguage() {
 
     // Create two nodes, one for english and one for french, and comment each
     // node using both english and french as content language by changing URL
diff --git a/core/modules/comment/src/Tests/CommentNodeAccessTest.php b/core/modules/comment/src/Tests/CommentNodeAccessTest.php
index 60f8bbdd5ad07d5a937a6ebb0a3f64e08cb685d4..ffbffa1ff95c2e65b69ce89febba88eba256090c 100644
--- a/core/modules/comment/src/Tests/CommentNodeAccessTest.php
+++ b/core/modules/comment/src/Tests/CommentNodeAccessTest.php
@@ -43,7 +43,7 @@ protected function setUp() {
   /**
    * Test that threaded comments can be viewed.
    */
-  function testThreadedCommentView() {
+  public function testThreadedCommentView() {
     // Set comments to have subject required and preview disabled.
     $this->drupalLogin($this->adminUser);
     $this->setCommentPreview(DRUPAL_DISABLED);
diff --git a/core/modules/comment/src/Tests/CommentNodeChangesTest.php b/core/modules/comment/src/Tests/CommentNodeChangesTest.php
index 7724f9979a0488135bbaf4943bcbedd9e7d082f5..148198d001f8187e99458aa88ddbc2ca27a425b0 100644
--- a/core/modules/comment/src/Tests/CommentNodeChangesTest.php
+++ b/core/modules/comment/src/Tests/CommentNodeChangesTest.php
@@ -16,7 +16,7 @@ class CommentNodeChangesTest extends CommentTestBase {
   /**
    * Tests that comments are deleted with the node.
    */
-  function testNodeDeletion() {
+  public function testNodeDeletion() {
     $this->drupalLogin($this->webUser);
     $comment = $this->postComment($this->node, $this->randomMachineName(), $this->randomMachineName());
     $this->assertTrue($comment->id(), 'The comment could be loaded.');
diff --git a/core/modules/comment/src/Tests/CommentNonNodeTest.php b/core/modules/comment/src/Tests/CommentNonNodeTest.php
index bc40c9d8adff71d448c304bb02b12d04cf25eaf3..3c285d8f1c39292314996c4f936350a430261100 100644
--- a/core/modules/comment/src/Tests/CommentNonNodeTest.php
+++ b/core/modules/comment/src/Tests/CommentNonNodeTest.php
@@ -108,7 +108,7 @@ protected function setUp() {
    * @return \Drupal\comment\CommentInterface
    *   The new comment entity.
    */
-  function postComment(EntityInterface $entity, $comment, $subject = '', $contact = NULL) {
+  public function postComment(EntityInterface $entity, $comment, $subject = '', $contact = NULL) {
     $edit = [];
     $edit['comment_body[0][value]'] = $comment;
 
@@ -180,7 +180,7 @@ function postComment(EntityInterface $entity, $comment, $subject = '', $contact
    * @return bool
    *   Boolean indicating whether the comment was found.
    */
-  function commentExists(CommentInterface $comment = NULL, $reply = FALSE) {
+  public function commentExists(CommentInterface $comment = NULL, $reply = FALSE) {
     if ($comment) {
       $regex = '/' . ($reply ? '<div class="indented">(.*?)' : '');
       $regex .= '<a id="comment-' . $comment->id() . '"(.*?)';
@@ -201,7 +201,7 @@ function commentExists(CommentInterface $comment = NULL, $reply = FALSE) {
    * @return bool
    *   Contact info is available.
    */
-  function commentContactInfoAvailable() {
+  public function commentContactInfoAvailable() {
     return preg_match('/(input).*?(name="name").*?(input).*?(name="mail").*?(input).*?(name="homepage")/s', $this->getRawContent());
   }
 
@@ -215,7 +215,7 @@ function commentContactInfoAvailable() {
    * @param bool $approval
    *   Operation is found on approval page.
    */
-  function performCommentOperation($comment, $operation, $approval = FALSE) {
+  public function performCommentOperation($comment, $operation, $approval = FALSE) {
     $edit = [];
     $edit['operation'] = $operation;
     $edit['comments[' . $comment->id() . ']'] = TRUE;
@@ -239,7 +239,7 @@ function performCommentOperation($comment, $operation, $approval = FALSE) {
    * @return int
    *   Comment ID.
    */
-  function getUnapprovedComment($subject) {
+  public function getUnapprovedComment($subject) {
     $this->drupalGet('admin/content/comment/approval');
     preg_match('/href="(.*?)#comment-([^"]+)"(.*?)>(' . $subject . ')/', $this->getRawContent(), $match);
 
@@ -249,7 +249,7 @@ function getUnapprovedComment($subject) {
   /**
    * Tests anonymous comment functionality.
    */
-  function testCommentFunctionality() {
+  public function testCommentFunctionality() {
     $limited_user = $this->drupalCreateUser([
       'administer entity_test fields'
     ]);
diff --git a/core/modules/comment/src/Tests/CommentPagerTest.php b/core/modules/comment/src/Tests/CommentPagerTest.php
index 1bfda557f50256fecdc63c74dc3f5af24a9cb999..9c4897840363d01528549f2ca1f8aabf8b8f8d00 100644
--- a/core/modules/comment/src/Tests/CommentPagerTest.php
+++ b/core/modules/comment/src/Tests/CommentPagerTest.php
@@ -15,7 +15,7 @@ class CommentPagerTest extends CommentTestBase {
   /**
    * Confirms comment paging works correctly with flat and threaded comments.
    */
-  function testCommentPaging() {
+  public function testCommentPaging() {
     $this->drupalLogin($this->adminUser);
 
     // Set comment variables.
@@ -93,7 +93,7 @@ function testCommentPaging() {
   /**
    * Confirms comment paging works correctly with flat and threaded comments.
    */
-  function testCommentPermalink() {
+  public function testCommentPermalink() {
     $this->drupalLogin($this->adminUser);
 
     // Set comment variables.
@@ -125,7 +125,7 @@ function testCommentPermalink() {
   /**
    * Tests comment ordering and threading.
    */
-  function testCommentOrderingThreading() {
+  public function testCommentOrderingThreading() {
     $this->drupalLogin($this->adminUser);
 
     // Set comment variables.
@@ -205,7 +205,7 @@ function testCommentOrderingThreading() {
    * @param array $expected_order
    *   An array of keys from $comments describing the expected order.
    */
-  function assertCommentOrder(array $comments, array $expected_order) {
+  public function assertCommentOrder(array $comments, array $expected_order) {
     $expected_cids = [];
 
     // First, rekey the expected order by cid.
@@ -224,7 +224,7 @@ function assertCommentOrder(array $comments, array $expected_order) {
   /**
    * Tests calculation of first page with new comment.
    */
-  function testCommentNewPageIndicator() {
+  public function testCommentNewPageIndicator() {
     $this->drupalLogin($this->adminUser);
 
     // Set comment variables.
@@ -304,7 +304,7 @@ function testCommentNewPageIndicator() {
   /**
    * Confirms comment paging works correctly with two pagers.
    */
-  function testTwoPagers() {
+  public function testTwoPagers() {
     // Add another field to article content-type.
     $this->addDefaultCommentField('node', 'article', 'comment_2');
     // Set default to display comment list with unique pager id.
diff --git a/core/modules/comment/src/Tests/CommentPreviewTest.php b/core/modules/comment/src/Tests/CommentPreviewTest.php
index 039c6ab10bab5ddb05c70d9d37eebc346abc272c..1b07fe600b08abd105d1d9ecea533b661b887318 100644
--- a/core/modules/comment/src/Tests/CommentPreviewTest.php
+++ b/core/modules/comment/src/Tests/CommentPreviewTest.php
@@ -26,7 +26,7 @@ class CommentPreviewTest extends CommentTestBase {
   /**
    * Tests comment preview.
    */
-  function testCommentPreview() {
+  public function testCommentPreview() {
     // As admin user, configure comment settings.
     $this->drupalLogin($this->adminUser);
     $this->setCommentPreview(DRUPAL_OPTIONAL);
@@ -123,7 +123,7 @@ public function testCommentPreviewDuplicateSubmission() {
   /**
    * Tests comment edit, preview, and save.
    */
-  function testCommentEditPreviewSave() {
+  public function testCommentEditPreviewSave() {
     $web_user = $this->drupalCreateUser(['access comments', 'post comments', 'skip comment approval', 'edit own comments']);
     $this->drupalLogin($this->adminUser);
     $this->setCommentPreview(DRUPAL_OPTIONAL);
diff --git a/core/modules/comment/src/Tests/CommentRssTest.php b/core/modules/comment/src/Tests/CommentRssTest.php
index 5c9fe3d667f13229e8a7dd345a04f9c083d7a090..35cad71fa99b6436100df70679ca434be9b0cd6f 100644
--- a/core/modules/comment/src/Tests/CommentRssTest.php
+++ b/core/modules/comment/src/Tests/CommentRssTest.php
@@ -42,7 +42,7 @@ protected function setUp() {
   /**
    * Tests comments as part of an RSS feed.
    */
-  function testCommentRss() {
+  public function testCommentRss() {
     // Find comment in RSS feed.
     $this->drupalLogin($this->webUser);
     $this->postComment($this->node, $this->randomMachineName(), $this->randomMachineName());
diff --git a/core/modules/comment/src/Tests/CommentStatisticsTest.php b/core/modules/comment/src/Tests/CommentStatisticsTest.php
index bd0838ca5d2d14941084164163797ca868b73257..0d1ec3a0451c4264a2c8b06e4a56861649631c8e 100644
--- a/core/modules/comment/src/Tests/CommentStatisticsTest.php
+++ b/core/modules/comment/src/Tests/CommentStatisticsTest.php
@@ -38,7 +38,7 @@ protected function setUp() {
   /**
    * Tests the node comment statistics.
    */
-  function testCommentNodeCommentStatistics() {
+  public function testCommentNodeCommentStatistics() {
     $node_storage = $this->container->get('entity.manager')->getStorage('node');
     // Set comments to have subject and preview disabled.
     $this->drupalLogin($this->adminUser);
diff --git a/core/modules/comment/src/Tests/CommentTestBase.php b/core/modules/comment/src/Tests/CommentTestBase.php
index 716b3bd96fea10decc8ffc11673b69a3589c2d33..c42d9883c62e7143877173b688bc18c523028c34 100644
--- a/core/modules/comment/src/Tests/CommentTestBase.php
+++ b/core/modules/comment/src/Tests/CommentTestBase.php
@@ -184,7 +184,7 @@ public function postComment($entity, $comment, $subject = '', $contact = NULL, $
    * @return bool
    *   Boolean indicating whether the comment was found.
    */
-  function commentExists(CommentInterface $comment = NULL, $reply = FALSE) {
+  public function commentExists(CommentInterface $comment = NULL, $reply = FALSE) {
     if ($comment) {
       $comment_element = $this->cssSelect('.comment-wrapper ' . ($reply ? '.indented ' : '') . '#comment-' . $comment->id() . ' ~ article');
       if (empty($comment_element)) {
@@ -214,7 +214,7 @@ function commentExists(CommentInterface $comment = NULL, $reply = FALSE) {
    * @param \Drupal\comment\CommentInterface $comment
    *   Comment to delete.
    */
-  function deleteComment(CommentInterface $comment) {
+  public function deleteComment(CommentInterface $comment) {
     $this->drupalPostForm('comment/' . $comment->id() . '/delete', [], t('Delete'));
     $this->assertText(t('The comment and all its replies have been deleted.'), 'Comment deleted.');
   }
@@ -289,7 +289,7 @@ public function setCommentForm($enabled, $field_name = 'comment') {
    *   - 1: Contact information allowed but not required.
    *   - 2: Contact information required.
    */
-  function setCommentAnonymous($level) {
+  public function setCommentAnonymous($level) {
     $this->setCommentSettings('anonymous', $level, format_string('Anonymous commenting set to level @level.', ['@level' => $level]));
   }
 
@@ -333,7 +333,7 @@ public function setCommentSettings($name, $value, $message, $field_name = 'comme
    * @return bool
    *   Contact info is available.
    */
-  function commentContactInfoAvailable() {
+  public function commentContactInfoAvailable() {
     return preg_match('/(input).*?(name="name").*?(input).*?(name="mail").*?(input).*?(name="homepage")/s', $this->getRawContent());
   }
 
@@ -347,7 +347,7 @@ function commentContactInfoAvailable() {
    * @param bool $approval
    *   Operation is found on approval page.
    */
-  function performCommentOperation(CommentInterface $comment, $operation, $approval = FALSE) {
+  public function performCommentOperation(CommentInterface $comment, $operation, $approval = FALSE) {
     $edit = [];
     $edit['operation'] = $operation;
     $edit['comments[' . $comment->id() . ']'] = TRUE;
@@ -371,7 +371,7 @@ function performCommentOperation(CommentInterface $comment, $operation, $approva
    * @return int
    *   Comment id.
    */
-  function getUnapprovedComment($subject) {
+  public function getUnapprovedComment($subject) {
     $this->drupalGet('admin/content/comment/approval');
     preg_match('/href="(.*?)#comment-([^"]+)"(.*?)>(' . $subject . ')/', $this->getRawContent(), $match);
 
diff --git a/core/modules/comment/src/Tests/CommentThreadingTest.php b/core/modules/comment/src/Tests/CommentThreadingTest.php
index 2dbf5bdea8575971a9a1c9accbd6a2f6f70bf8a8..8f412b22f74b48b0ba5c851d44557a88c93a2f0a 100644
--- a/core/modules/comment/src/Tests/CommentThreadingTest.php
+++ b/core/modules/comment/src/Tests/CommentThreadingTest.php
@@ -13,7 +13,7 @@ class CommentThreadingTest extends CommentTestBase {
   /**
    * Tests the comment threading.
    */
-  function testCommentThreading() {
+  public function testCommentThreading() {
     // Set comments to have a subject with preview disabled.
     $this->drupalLogin($this->adminUser);
     $this->setCommentPreview(DRUPAL_DISABLED);
diff --git a/core/modules/comment/src/Tests/CommentTokenReplaceTest.php b/core/modules/comment/src/Tests/CommentTokenReplaceTest.php
index 325aecb2daa429a37a913d0a3da49865218685af..6caea1789c5ccc42ce5952fb31c6b8b9490c499e 100644
--- a/core/modules/comment/src/Tests/CommentTokenReplaceTest.php
+++ b/core/modules/comment/src/Tests/CommentTokenReplaceTest.php
@@ -29,7 +29,7 @@ class CommentTokenReplaceTest extends CommentTestBase {
   /**
    * Creates a comment, then tests the tokens generated from it.
    */
-  function testCommentTokenReplacement() {
+  public function testCommentTokenReplacement() {
     $token_service = \Drupal::token();
     $language_interface = \Drupal::languageManager()->getCurrentLanguage();
     $url_options = [
diff --git a/core/modules/comment/src/Tests/CommentTranslationUITest.php b/core/modules/comment/src/Tests/CommentTranslationUITest.php
index 3157e23bddb5fc7f9f9439ecb1e68b6d3fd36d14..4613d66ecc707e07a18f1363ea88016d6a1d0db2 100644
--- a/core/modules/comment/src/Tests/CommentTranslationUITest.php
+++ b/core/modules/comment/src/Tests/CommentTranslationUITest.php
@@ -60,7 +60,7 @@ protected function setUp() {
   /**
    * {@inheritdoc}
    */
-  function setupBundle() {
+  public function setupBundle() {
     parent::setupBundle();
     $this->drupalCreateContentType(['type' => $this->nodeBundle, 'name' => $this->nodeBundle]);
     // Add a comment field to the article content type.
@@ -181,7 +181,7 @@ protected function doTestAuthoringInfo() {
   /**
    * Tests translate link on comment content admin page.
    */
-  function testTranslateLinkCommentAdminPage() {
+  public function testTranslateLinkCommentAdminPage() {
     $this->adminUser = $this->drupalCreateUser(array_merge(parent::getTranslatorPermissions(), ['access administration pages', 'administer comments', 'skip comment approval']));
     $this->drupalLogin($this->adminUser);
 
diff --git a/core/modules/comment/src/Tests/CommentUninstallTest.php b/core/modules/comment/src/Tests/CommentUninstallTest.php
index 9f9d36ad012da400112775a45498e9b3b7aab218..7873915f03a105c049e0d2441fe99e3ba233f7d4 100644
--- a/core/modules/comment/src/Tests/CommentUninstallTest.php
+++ b/core/modules/comment/src/Tests/CommentUninstallTest.php
@@ -36,7 +36,7 @@ protected function setUp() {
    *
    * @throws \Drupal\Core\Extension\ModuleUninstallValidatorException
    */
-  function testCommentUninstallWithField() {
+  public function testCommentUninstallWithField() {
     // Ensure that the field exists before uninstallation.
     $field_storage = FieldStorageConfig::loadByName('comment', 'comment_body');
     $this->assertNotNull($field_storage, 'The comment_body field exists.');
@@ -55,7 +55,7 @@ function testCommentUninstallWithField() {
   /**
    * Tests if uninstallation succeeds if the field has been deleted beforehand.
    */
-  function testCommentUninstallWithoutField() {
+  public function testCommentUninstallWithoutField() {
     // Manually delete the comment_body field before module uninstallation.
     $field_storage = FieldStorageConfig::loadByName('comment', 'comment_body');
     $this->assertNotNull($field_storage, 'The comment_body field exists.');
diff --git a/core/modules/comment/src/Tests/Views/ArgumentUserUIDTest.php b/core/modules/comment/src/Tests/Views/ArgumentUserUIDTest.php
index 3365918ff9532f000af38ebcfb3af9914a8565c3..d3526dc2846572d868eeda4007819fbd5707fad9 100644
--- a/core/modules/comment/src/Tests/Views/ArgumentUserUIDTest.php
+++ b/core/modules/comment/src/Tests/Views/ArgumentUserUIDTest.php
@@ -20,7 +20,7 @@ class ArgumentUserUIDTest extends CommentTestBase {
    */
   public static $testViews = ['test_comment_user_uid'];
 
-  function testCommentUserUIDTest() {
+  public function testCommentUserUIDTest() {
     // Add an additional comment which is not created by the user.
     $new_user = User::create(['name' => 'new user']);
     $new_user->save();
diff --git a/core/modules/comment/src/Tests/Views/CommentFieldFilterTest.php b/core/modules/comment/src/Tests/Views/CommentFieldFilterTest.php
index 040fc7dadb1d9dc6734dc766e8f15e0bc9985e57..48f7d6d25563156730e6b08bff9c16ae58f8503f 100644
--- a/core/modules/comment/src/Tests/Views/CommentFieldFilterTest.php
+++ b/core/modules/comment/src/Tests/Views/CommentFieldFilterTest.php
@@ -31,7 +31,7 @@ class CommentFieldFilterTest extends CommentTestBase {
    */
   public $commentTitles = [];
 
-  function setUp() {
+  public function setUp() {
     parent::setUp();
     $this->drupalLogin($this->drupalCreateUser(['access comments']));
 
diff --git a/core/modules/comment/src/Tests/Views/FilterUserUIDTest.php b/core/modules/comment/src/Tests/Views/FilterUserUIDTest.php
index c4570cee328857d5781faa05b1ff57f632ba1aa3..442a0e762b4a748c82b2f933176f217ca4a3651a 100644
--- a/core/modules/comment/src/Tests/Views/FilterUserUIDTest.php
+++ b/core/modules/comment/src/Tests/Views/FilterUserUIDTest.php
@@ -22,7 +22,7 @@ class FilterUserUIDTest extends CommentTestBase {
    */
   public static $testViews = ['test_comment_user_uid'];
 
-  function testCommentUserUIDTest() {
+  public function testCommentUserUIDTest() {
     $view = Views::getView('test_comment_user_uid');
     $view->setDisplay();
     $view->removeHandler('default', 'argument', 'uid_touch');
diff --git a/core/modules/config/src/ConfigSubscriber.php b/core/modules/config/src/ConfigSubscriber.php
index aebc86e61cac519b49cfa28a10e97f589ddad215..94405a1cd08289e75c30115f067f734665a9d364 100644
--- a/core/modules/config/src/ConfigSubscriber.php
+++ b/core/modules/config/src/ConfigSubscriber.php
@@ -29,7 +29,7 @@ public function onConfigImporterValidate(ConfigImporterEvent $event) {
   /**
    * {@inheritdoc}
    */
-  static function getSubscribedEvents() {
+  public static function getSubscribedEvents() {
     $events[ConfigEvents::IMPORT_VALIDATE][] = ['onConfigImporterValidate', 20];
     return $events;
   }
diff --git a/core/modules/config/src/Tests/ConfigEntityListTest.php b/core/modules/config/src/Tests/ConfigEntityListTest.php
index 161944b9812a9d19887bbd30344df2633d8f14bd..e9950ea424b2a32ec93b73af0e139abb98cb618b 100644
--- a/core/modules/config/src/Tests/ConfigEntityListTest.php
+++ b/core/modules/config/src/Tests/ConfigEntityListTest.php
@@ -34,7 +34,7 @@ protected function setUp() {
   /**
    * Tests entity list builder methods.
    */
-  function testList() {
+  public function testList() {
     $controller = \Drupal::entityManager()->getListBuilder('config_test');
 
     // Test getStorage() method.
@@ -147,7 +147,7 @@ function testList() {
   /**
    * Tests the listing UI.
    */
-  function testListUI() {
+  public function testListUI() {
     // Log in as an administrative user to access the full menu trail.
     $this->drupalLogin($this->drupalCreateUser(['access administration pages', 'administer site configuration']));
 
diff --git a/core/modules/config/src/Tests/ConfigEntityTest.php b/core/modules/config/src/Tests/ConfigEntityTest.php
index 77b35cc040dd43a17d0ac9147fdb518ead8d2e34..c0dc97bc7b56297ab700c89015faaba90416c901 100644
--- a/core/modules/config/src/Tests/ConfigEntityTest.php
+++ b/core/modules/config/src/Tests/ConfigEntityTest.php
@@ -32,7 +32,7 @@ class ConfigEntityTest extends WebTestBase {
   /**
    * Tests CRUD operations.
    */
-  function testCRUD() {
+  public function testCRUD() {
     $default_langcode = \Drupal::languageManager()->getDefaultLanguage()->getId();
     // Verify default properties on a newly created empty entity.
     $empty = entity_create('config_test');
@@ -230,7 +230,7 @@ function testCRUD() {
   /**
    * Tests CRUD operations through the UI.
    */
-  function testCRUDUI() {
+  public function testCRUDUI() {
     $this->drupalLogin($this->drupalCreateUser(['administer site configuration']));
 
     $id = strtolower($this->randomMachineName());
diff --git a/core/modules/config/src/Tests/ConfigExportUITest.php b/core/modules/config/src/Tests/ConfigExportUITest.php
index 839aa26cadeb98b89e8a9401ba907f12a7174da1..c9f53b36fde5026722a9a249a513f63705754bfe 100644
--- a/core/modules/config/src/Tests/ConfigExportUITest.php
+++ b/core/modules/config/src/Tests/ConfigExportUITest.php
@@ -39,7 +39,7 @@ protected function setUp() {
   /**
    * Tests export of configuration.
    */
-  function testExport() {
+  public function testExport() {
     // Verify the export page with export submit button is available.
     $this->drupalGet('admin/config/development/configuration/full/export');
     $this->assertFieldById('edit-submit', t('Export'));
diff --git a/core/modules/config/src/Tests/ConfigImportUITest.php b/core/modules/config/src/Tests/ConfigImportUITest.php
index 1b63c2abe63711626d887fe27eb27ed621b6f663..31654b357744de1d63778b35e381c42d4f703ce8 100644
--- a/core/modules/config/src/Tests/ConfigImportUITest.php
+++ b/core/modules/config/src/Tests/ConfigImportUITest.php
@@ -39,7 +39,7 @@ protected function setUp() {
   /**
    * Tests importing configuration.
    */
-  function testImport() {
+  public function testImport() {
     $name = 'system.site';
     $dynamic_name = 'config_test.dynamic.new';
     /** @var \Drupal\Core\Config\StorageInterface $sync */
@@ -221,7 +221,7 @@ function testImport() {
   /**
    * Tests concurrent importing of configuration.
    */
-  function testImportLock() {
+  public function testImportLock() {
     // Create updated configuration object.
     $new_site_name = 'Config import test ' . $this->randomString();
     $this->prepareSiteNameUpdate($new_site_name);
@@ -248,7 +248,7 @@ function testImportLock() {
   /**
    * Tests verification of site UUID before importing configuration.
    */
-  function testImportSiteUuidValidation() {
+  public function testImportSiteUuidValidation() {
     $sync = \Drupal::service('config.storage.sync');
     // Create updated configuration object.
     $config_data = $this->config('system.site')->get();
@@ -265,7 +265,7 @@ function testImportSiteUuidValidation() {
   /**
    * Tests the screen that shows differences between active and sync.
    */
-  function testImportDiff() {
+  public function testImportDiff() {
     $sync = $this->container->get('config.storage.sync');
     $config_name = 'config_test.system';
     $change_key = 'foo';
@@ -377,7 +377,7 @@ public function testConfigUninstallConfigException() {
     $this->assertText('Can not uninstall the Configuration module as part of a configuration synchronization through the user interface.');
   }
 
-  function prepareSiteNameUpdate($new_site_name) {
+  public function prepareSiteNameUpdate($new_site_name) {
     $sync = $this->container->get('config.storage.sync');
     // Create updated configuration object.
     $config_data = $this->config('system.site')->get();
@@ -388,7 +388,7 @@ function prepareSiteNameUpdate($new_site_name) {
   /**
    * Tests an import that results in an error.
    */
-  function testImportErrorLog() {
+  public function testImportErrorLog() {
     $name_primary = 'config_test.dynamic.primary';
     $name_secondary = 'config_test.dynamic.secondary';
     $sync = $this->container->get('config.storage.sync');
diff --git a/core/modules/config/src/Tests/ConfigImportUploadTest.php b/core/modules/config/src/Tests/ConfigImportUploadTest.php
index 9792213a688d17b890fa198638e8c8595cecf6e9..5e2129513cf3201a20dc66112b316e73d6e2ccbd 100644
--- a/core/modules/config/src/Tests/ConfigImportUploadTest.php
+++ b/core/modules/config/src/Tests/ConfigImportUploadTest.php
@@ -35,7 +35,7 @@ protected function setUp() {
   /**
    * Tests importing configuration.
    */
-  function testImport() {
+  public function testImport() {
     // Verify access to the config upload form.
     $this->drupalGet('admin/config/development/configuration/full/import');
     $this->assertResponse(200);
diff --git a/core/modules/config/src/Tests/ConfigInstallWebTest.php b/core/modules/config/src/Tests/ConfigInstallWebTest.php
index 79b50a0a672241ed4fa17045d96ff5f4ffbf9f92..63ecb5bb68d664df6ea96d59f3ca5943a9964df5 100644
--- a/core/modules/config/src/Tests/ConfigInstallWebTest.php
+++ b/core/modules/config/src/Tests/ConfigInstallWebTest.php
@@ -36,7 +36,7 @@ protected function setUp() {
   /**
    * Tests module re-installation.
    */
-  function testIntegrationModuleReinstallation() {
+  public function testIntegrationModuleReinstallation() {
     $default_config = 'config_integration_test.settings';
     $default_configuration_entity = 'config_test.dynamic.config_integration_test';
 
diff --git a/core/modules/config/tests/config_collection_install_test/src/EventSubscriber.php b/core/modules/config/tests/config_collection_install_test/src/EventSubscriber.php
index 76714a5b97d7bf13e72fc8c8b95c8fe73823166b..ae386612842df8a586fafbfc5b2edf03609b1e61 100644
--- a/core/modules/config/tests/config_collection_install_test/src/EventSubscriber.php
+++ b/core/modules/config/tests/config_collection_install_test/src/EventSubscriber.php
@@ -42,7 +42,7 @@ public function addCollections(ConfigCollectionInfo $collection_info) {
   /**
    * {@inheritdoc}
    */
-  static function getSubscribedEvents() {
+  public static function getSubscribedEvents() {
     $events[ConfigEvents::COLLECTION_INFO][] = ['addCollections'];
     return $events;
   }
diff --git a/core/modules/config/tests/config_events_test/src/EventSubscriber.php b/core/modules/config/tests/config_events_test/src/EventSubscriber.php
index 39e8eb80fc1da1a3bd9c2a4c3f0aaad200e0f506..98417c02e95ea5c05d895fb3579f8b6388c126c6 100644
--- a/core/modules/config/tests/config_events_test/src/EventSubscriber.php
+++ b/core/modules/config/tests/config_events_test/src/EventSubscriber.php
@@ -48,7 +48,7 @@ public function configEventRecorder(ConfigCrudEvent $event, $name) {
   /**
    * {@inheritdoc}
    */
-  static function getSubscribedEvents() {
+  public static function getSubscribedEvents() {
     $events[ConfigEvents::SAVE][] = ['configEventRecorder'];
     $events[ConfigEvents::DELETE][] = ['configEventRecorder'];
     $events[ConfigEvents::RENAME][] = ['configEventRecorder'];
diff --git a/core/modules/config/tests/config_import_test/src/EventSubscriber.php b/core/modules/config/tests/config_import_test/src/EventSubscriber.php
index e0ef923a390832243de28642e5cd3011bc5c3dc9..5f8ef86c045cfc734a69457d9607bad612903db5 100644
--- a/core/modules/config/tests/config_import_test/src/EventSubscriber.php
+++ b/core/modules/config/tests/config_import_test/src/EventSubscriber.php
@@ -131,7 +131,7 @@ public function onConfigDelete(ConfigCrudEvent $event) {
    * @return array
    *   An array of event listener definitions.
    */
-  static function getSubscribedEvents() {
+  public static function getSubscribedEvents() {
     $events[ConfigEvents::SAVE][] = ['onConfigSave', 40];
     $events[ConfigEvents::DELETE][] = ['onConfigDelete', 40];
     $events[ConfigEvents::IMPORT_VALIDATE] = ['onConfigImporterValidate'];
diff --git a/core/modules/config/tests/config_test/src/ConfigTestController.php b/core/modules/config/tests/config_test/src/ConfigTestController.php
index 6799dc1b6f033efa98eac35c259d6e51f6594a17..d352eca1641ef4d62319710d5349e5e68686cd4d 100644
--- a/core/modules/config/tests/config_test/src/ConfigTestController.php
+++ b/core/modules/config/tests/config_test/src/ConfigTestController.php
@@ -33,7 +33,7 @@ public function editTitle(ConfigTest $config_test) {
    * @return \Symfony\Component\HttpFoundation\RedirectResponse
    *   A redirect response to the config_test listing page.
    */
-  function enable(ConfigTest $config_test) {
+  public function enable(ConfigTest $config_test) {
     $config_test->enable()->save();
     return new RedirectResponse($config_test->url('collection', ['absolute' => TRUE]));
   }
@@ -47,7 +47,7 @@ function enable(ConfigTest $config_test) {
    * @return \Symfony\Component\HttpFoundation\RedirectResponse
    *   A redirect response to the config_test listing page.
    */
-  function disable(ConfigTest $config_test) {
+  public function disable(ConfigTest $config_test) {
     $config_test->disable()->save();
     return new RedirectResponse($config_test->url('collection', ['absolute' => TRUE]));
   }
diff --git a/core/modules/config/tests/src/Functional/ConfigDependencyWebTest.php b/core/modules/config/tests/src/Functional/ConfigDependencyWebTest.php
index ba80401bc4d94b3c16f9a7a9881243c03fb6c9ca..696a36e8cb2916c80f0a159abd7f2d4dd8eea5e1 100644
--- a/core/modules/config/tests/src/Functional/ConfigDependencyWebTest.php
+++ b/core/modules/config/tests/src/Functional/ConfigDependencyWebTest.php
@@ -29,7 +29,7 @@ class ConfigDependencyWebTest extends BrowserTestBase {
    *
    * @see \Drupal\Core\Config\Entity\ConfigDependencyDeleteFormTrait
    */
-  function testConfigDependencyDeleteFormTrait() {
+  public function testConfigDependencyDeleteFormTrait() {
     $this->drupalLogin($this->drupalCreateUser(['administer site configuration']));
 
     /** @var \Drupal\Core\Config\Entity\ConfigEntityStorage $storage */
diff --git a/core/modules/config/tests/src/Functional/ConfigEntityListMultilingualTest.php b/core/modules/config/tests/src/Functional/ConfigEntityListMultilingualTest.php
index 5d99252d9c94a8a00c2248819fb0d83b4c7b097e..7c5fa1fac19fe29e4a19d9c35c4cbc51d9427d73 100644
--- a/core/modules/config/tests/src/Functional/ConfigEntityListMultilingualTest.php
+++ b/core/modules/config/tests/src/Functional/ConfigEntityListMultilingualTest.php
@@ -34,7 +34,7 @@ protected function setUp() {
   /**
    * Tests the listing UI with different language scenarios.
    */
-  function testListUI() {
+  public function testListUI() {
     // Log in as an administrative user to access the full menu trail.
     $this->drupalLogin($this->drupalCreateUser(['access administration pages', 'administer site configuration']));
 
diff --git a/core/modules/config/tests/src/Functional/ConfigEntityStatusUITest.php b/core/modules/config/tests/src/Functional/ConfigEntityStatusUITest.php
index 4ad4d59b9d2df47db0ea8f7e87615e63ccf48c7c..af68f33bdc20e11522cd131c67222d83a9f16c0e 100644
--- a/core/modules/config/tests/src/Functional/ConfigEntityStatusUITest.php
+++ b/core/modules/config/tests/src/Functional/ConfigEntityStatusUITest.php
@@ -21,7 +21,7 @@ class ConfigEntityStatusUITest extends BrowserTestBase {
   /**
    * Tests status operations.
    */
-  function testCRUD() {
+  public function testCRUD() {
     $this->drupalLogin($this->drupalCreateUser(['administer site configuration']));
 
     $id = strtolower($this->randomMachineName());
diff --git a/core/modules/config/tests/src/Functional/ConfigInstallProfileOverrideTest.php b/core/modules/config/tests/src/Functional/ConfigInstallProfileOverrideTest.php
index 88218b9899f29eb9610776ef4a489afd4f1f7835..1f5232c939ef8b8aba21b6529a818589f44e3691 100644
--- a/core/modules/config/tests/src/Functional/ConfigInstallProfileOverrideTest.php
+++ b/core/modules/config/tests/src/Functional/ConfigInstallProfileOverrideTest.php
@@ -28,7 +28,7 @@ class ConfigInstallProfileOverrideTest extends BrowserTestBase {
   /**
    * Tests install profile config changes.
    */
-  function testInstallProfileConfigOverwrite() {
+  public function testInstallProfileConfigOverwrite() {
     $config_name = 'system.cron';
     // The expected configuration from the system module.
     $expected_original_data = [
diff --git a/core/modules/config/tests/src/Functional/ConfigLanguageOverrideWebTest.php b/core/modules/config/tests/src/Functional/ConfigLanguageOverrideWebTest.php
index 5fdd1a1441758dc97a5008b5fee92e43c4671166..092ad2b377f808f60ea375ba6d0be594bc502100 100644
--- a/core/modules/config/tests/src/Functional/ConfigLanguageOverrideWebTest.php
+++ b/core/modules/config/tests/src/Functional/ConfigLanguageOverrideWebTest.php
@@ -34,7 +34,7 @@ protected function setUp() {
   /**
    * Tests translating the site name.
    */
-  function testSiteNameTranslation() {
+  public function testSiteNameTranslation() {
     $adminUser = $this->drupalCreateUser(['administer site configuration', 'administer languages']);
     $this->drupalLogin($adminUser);
 
diff --git a/core/modules/contact/src/Tests/ContactPersonalTest.php b/core/modules/contact/src/Tests/ContactPersonalTest.php
index d80484f4298b7dbe29471c3e3bfee3e079de8bab..afb7746e0bb131264e90fec6844067fde8518517 100644
--- a/core/modules/contact/src/Tests/ContactPersonalTest.php
+++ b/core/modules/contact/src/Tests/ContactPersonalTest.php
@@ -58,7 +58,7 @@ protected function setUp() {
   /**
    * Tests that mails for contact messages are correctly sent.
    */
-  function testSendPersonalContactMessage() {
+  public function testSendPersonalContactMessage() {
     // Ensure that the web user's email needs escaping.
     $mail = $this->webUser->getUsername() . '&escaped@example.com';
     $this->webUser->setEmail($mail)->save();
@@ -103,7 +103,7 @@ function testSendPersonalContactMessage() {
   /**
    * Tests access to the personal contact form.
    */
-  function testPersonalContactAccess() {
+  public function testPersonalContactAccess() {
     // Test allowed access to admin user's contact form.
     $this->drupalLogin($this->webUser);
     $this->drupalGet('user/' . $this->adminUser->id() . '/contact');
@@ -223,7 +223,7 @@ function testPersonalContactAccess() {
   /**
    * Tests the personal contact form flood protection.
    */
-  function testPersonalContactFlood() {
+  public function testPersonalContactFlood() {
     $flood_limit = 3;
     $this->config('contact.settings')->set('flood.limit', $flood_limit)->save();
 
@@ -248,7 +248,7 @@ function testPersonalContactFlood() {
   /**
    * Tests the personal contact form based access when an admin adds users.
    */
-  function testAdminContact() {
+  public function testAdminContact() {
     user_role_grant_permissions(RoleInterface::ANONYMOUS_ID, ['access user contact forms']);
     $this->checkContactAccess(200);
     $this->checkContactAccess(403, FALSE);
diff --git a/core/modules/contact/src/Tests/ContactSitewideTest.php b/core/modules/contact/src/Tests/ContactSitewideTest.php
index 0721cf4dc9d8c78804a393c511a78ccade9f6d54..4a5b1f731b939a31bad0c71681ac3d9eb320329d 100644
--- a/core/modules/contact/src/Tests/ContactSitewideTest.php
+++ b/core/modules/contact/src/Tests/ContactSitewideTest.php
@@ -42,7 +42,7 @@ protected function setUp() {
   /**
    * Tests configuration options and the site-wide contact form.
    */
-  function testSiteWideContact() {
+  public function testSiteWideContact() {
     // Create and log in administrative user.
     $admin_user = $this->drupalCreateUser([
       'access site-wide contact form',
@@ -349,7 +349,7 @@ function testSiteWideContact() {
   /**
    * Tests auto-reply on the site-wide contact form.
    */
-  function testAutoReply() {
+  public function testAutoReply() {
     // Create and log in administrative user.
     $admin_user = $this->drupalCreateUser([
       'access site-wide contact form',
@@ -431,7 +431,7 @@ function testAutoReply() {
    * @param array $third_party_settings
    *   Array of third party settings to be added to the posted form data.
    */
-  function addContactForm($id, $label, $recipients, $reply, $selected, $message = 'Your message has been sent.', $third_party_settings = []) {
+  public function addContactForm($id, $label, $recipients, $reply, $selected, $message = 'Your message has been sent.', $third_party_settings = []) {
     $edit = [];
     $edit['label'] = $label;
     $edit['id'] = $id;
@@ -463,7 +463,7 @@ function addContactForm($id, $label, $recipients, $reply, $selected, $message =
    * @param string $redirect
    *   The path where user will be redirect after this form has been submitted..
    */
-  function updateContactForm($id, $label, $recipients, $reply, $selected, $message = 'Your message has been sent.', $redirect = '/') {
+  public function updateContactForm($id, $label, $recipients, $reply, $selected, $message = 'Your message has been sent.', $redirect = '/') {
     $edit = [];
     $edit['label'] = $label;
     $edit['recipients'] = $recipients;
@@ -488,7 +488,7 @@ function updateContactForm($id, $label, $recipients, $reply, $selected, $message
    * @param string $message
    *   The message body.
    */
-  function submitContact($name, $mail, $subject, $id, $message) {
+  public function submitContact($name, $mail, $subject, $id, $message) {
     $edit = [];
     $edit['name'] = $name;
     $edit['mail'] = $mail;
@@ -505,7 +505,7 @@ function submitContact($name, $mail, $subject, $id, $message) {
   /**
    * Deletes all forms.
    */
-  function deleteContactForms() {
+  public function deleteContactForms() {
     $contact_forms = ContactForm::loadMultiple();;
     foreach ($contact_forms as $id => $contact_form) {
       if ($id == 'personal') {
diff --git a/core/modules/contact/tests/src/Functional/ContactAuthenticatedUserTest.php b/core/modules/contact/tests/src/Functional/ContactAuthenticatedUserTest.php
index 306fe5d41cc68e9285ecfcc70e38be5755074eca..43cf3ce0fbbe54bbff06ce853f309bf8b6ac3fe6 100644
--- a/core/modules/contact/tests/src/Functional/ContactAuthenticatedUserTest.php
+++ b/core/modules/contact/tests/src/Functional/ContactAuthenticatedUserTest.php
@@ -21,7 +21,7 @@ class ContactAuthenticatedUserTest extends BrowserTestBase {
   /**
    * Tests that name and email fields are not present for authenticated users.
    */
-  function testContactSiteWideTextfieldsLoggedInTestCase() {
+  public function testContactSiteWideTextfieldsLoggedInTestCase() {
     $this->drupalLogin($this->drupalCreateUser(['access site-wide contact form']));
     $this->drupalGet('contact');
 
diff --git a/core/modules/content_translation/src/ContentTranslationHandler.php b/core/modules/content_translation/src/ContentTranslationHandler.php
index 9a6050d794218ae5d99ca3cf48759c360ce90ad3..c1688b9d64775e32f02b700953f44b854de5f035 100644
--- a/core/modules/content_translation/src/ContentTranslationHandler.php
+++ b/core/modules/content_translation/src/ContentTranslationHandler.php
@@ -610,7 +610,7 @@ public function entityFormEntityBuild($entity_type, EntityInterface $entity, arr
    *
    * Validates the submitted content translation metadata.
    */
-  function entityFormValidate($form, FormStateInterface $form_state) {
+  public function entityFormValidate($form, FormStateInterface $form_state) {
     if (!$form_state->isValueEmpty('content_translation')) {
       $translation = $form_state->getValue('content_translation');
       // Validate the "authored by" field.
@@ -630,7 +630,7 @@ function entityFormValidate($form, FormStateInterface $form_state) {
    * Updates metadata fields, which should be updated only after the validation
    * has run and before the entity is saved.
    */
-  function entityFormSubmit($form, FormStateInterface $form_state) {
+  public function entityFormSubmit($form, FormStateInterface $form_state) {
     /** @var \Drupal\Core\Entity\ContentEntityFormInterface $form_object */
     $form_object = $form_state->getFormObject();
     /** @var \Drupal\Core\Entity\ContentEntityInterface $entity */
@@ -673,7 +673,7 @@ public function entityFormSourceChange($form, FormStateInterface $form_state) {
    *
    * Takes care of entity deletion.
    */
-  function entityFormDelete($form, FormStateInterface $form_state) {
+  public function entityFormDelete($form, FormStateInterface $form_state) {
     $form_object = $form_state->getFormObject()->getEntity();
     $entity = $form_object->getEntity();
     if (count($entity->getTranslationLanguages()) > 1) {
@@ -686,7 +686,7 @@ function entityFormDelete($form, FormStateInterface $form_state) {
    *
    * Takes care of content translation deletion.
    */
-  function entityFormDeleteTranslation($form, FormStateInterface $form_state) {
+  public function entityFormDeleteTranslation($form, FormStateInterface $form_state) {
     /** @var \Drupal\Core\Entity\ContentEntityFormInterface $form_object */
     $form_object = $form_state->getFormObject();
     /** @var \Drupal\Core\Entity\ContentEntityInterface $entity */
diff --git a/core/modules/content_translation/src/ContentTranslationManager.php b/core/modules/content_translation/src/ContentTranslationManager.php
index 70adc289bf26e44cd4fcde36e781290d8c3a1c83..da8bd1c618140077de9d7ad931f73a279e59cff4 100644
--- a/core/modules/content_translation/src/ContentTranslationManager.php
+++ b/core/modules/content_translation/src/ContentTranslationManager.php
@@ -40,7 +40,7 @@ public function __construct(EntityManagerInterface $manager, ContentTranslationU
   /**
    * {@inheritdoc}
    */
-  function getTranslationHandler($entity_type_id) {
+  public function getTranslationHandler($entity_type_id) {
     return $this->entityManager->getHandler($entity_type_id, 'translation');
   }
 
diff --git a/core/modules/content_translation/src/Tests/ContentTranslationSettingsTest.php b/core/modules/content_translation/src/Tests/ContentTranslationSettingsTest.php
index aed653b9036c0b5ceb9e925a969dc3f67c941888..7a1c598047b7d2d55d77daa47717bb1e7bc1415c 100644
--- a/core/modules/content_translation/src/Tests/ContentTranslationSettingsTest.php
+++ b/core/modules/content_translation/src/Tests/ContentTranslationSettingsTest.php
@@ -43,7 +43,7 @@ protected function setUp() {
   /**
    * Tests that the settings UI works as expected.
    */
-  function testSettingsUI() {
+  public function testSettingsUI() {
     // Check for the content_translation_menu_links_discovered_alter() changes.
     $this->drupalGet('admin/config');
     $this->assertLink('Content language and translation');
@@ -200,7 +200,7 @@ function testSettingsUI() {
   /**
    * Tests the language settings checkbox on account settings page.
    */
-  function testAccountLanguageSettingsUI() {
+  public function testAccountLanguageSettingsUI() {
     // Make sure the checkbox is available and not checked by default.
     $this->drupalGet('admin/config/people/accounts');
     $this->assertField('language[content_translation]');
@@ -245,7 +245,7 @@ protected function assertSettings($entity_type, $bundle, $enabled, $edit) {
   /**
    * Tests that field setting depends on bundle translatability.
    */
-  function testFieldTranslatableSettingsUI() {
+  public function testFieldTranslatableSettingsUI() {
     // At least one field needs to be translatable to enable article for
     // translation. Create an extra field to be used for this purpose. We use
     // the UI to test our form alterations.
@@ -280,7 +280,7 @@ function testFieldTranslatableSettingsUI() {
   /**
    * Tests the translatable settings checkbox for untranslatable entities.
    */
-  function testNonTranslatableTranslationSettingsUI() {
+  public function testNonTranslatableTranslationSettingsUI() {
     $this->drupalGet('admin/config/regional/content-language');
     $this->assertNoField('settings[entity_test][entity_test][translatable]');
   }
diff --git a/core/modules/content_translation/src/Tests/ContentTranslationSyncImageTest.php b/core/modules/content_translation/src/Tests/ContentTranslationSyncImageTest.php
index 10b3c5e0b63ca86572cce47e5c4b2fd361c67609..30ff32de5224908e1bb4f4f73f656f17366c4f7c 100644
--- a/core/modules/content_translation/src/Tests/ContentTranslationSyncImageTest.php
+++ b/core/modules/content_translation/src/Tests/ContentTranslationSyncImageTest.php
@@ -82,7 +82,7 @@ protected function getEditorPermissions() {
   /**
    * Tests image field field synchronization.
    */
-  function testImageFieldSync() {
+  public function testImageFieldSync() {
     // Check that the alt and title fields are enabled for the image field.
     $this->drupalLogin($this->editor);
     $this->drupalGet('entity_test_mul/structure/' . $this->entityTypeId . '/fields/' . $this->entityTypeId . '.' . $this->entityTypeId . '.' . $this->fieldName);
diff --git a/core/modules/content_translation/src/Tests/ContentTranslationUITestBase.php b/core/modules/content_translation/src/Tests/ContentTranslationUITestBase.php
index c6d1a5d4453a8b15c70e2bb5b4cabf90fba4d8d2..e7a7dfc9ddff08e88c4ae368433898457fa889d4 100644
--- a/core/modules/content_translation/src/Tests/ContentTranslationUITestBase.php
+++ b/core/modules/content_translation/src/Tests/ContentTranslationUITestBase.php
@@ -56,7 +56,7 @@ abstract class ContentTranslationUITestBase extends ContentTranslationTestBase {
   /**
    * Tests the basic translation UI.
    */
-  function testTranslationUI() {
+  public function testTranslationUI() {
     $this->doTestBasicTranslation();
     $this->doTestTranslationOverview();
     $this->doTestOutdatedStatus();
diff --git a/core/modules/content_translation/src/Tests/ContentTranslationWorkflowsTest.php b/core/modules/content_translation/src/Tests/ContentTranslationWorkflowsTest.php
index ac26a39abb5facab0bcc358c997fa7f60db0c42a..66469ebb4f1f3c9c79af3e237cb6f1636d0ef234 100644
--- a/core/modules/content_translation/src/Tests/ContentTranslationWorkflowsTest.php
+++ b/core/modules/content_translation/src/Tests/ContentTranslationWorkflowsTest.php
@@ -79,7 +79,7 @@ protected function setupEntity() {
   /**
    * Test simple and editorial translation workflows.
    */
-  function testWorkflows() {
+  public function testWorkflows() {
     // Test workflows for the editor.
     $expected_status = [
       'edit' => 200,
diff --git a/core/modules/content_translation/tests/src/Functional/ContentTranslationUISkipTest.php b/core/modules/content_translation/tests/src/Functional/ContentTranslationUISkipTest.php
index 02755e001a003b93c43761cc3dab1ddbb9a210c6..77c176e78e884e07c09931f34cae357ad0831dbf 100644
--- a/core/modules/content_translation/tests/src/Functional/ContentTranslationUISkipTest.php
+++ b/core/modules/content_translation/tests/src/Functional/ContentTranslationUISkipTest.php
@@ -21,7 +21,7 @@ class ContentTranslationUISkipTest extends BrowserTestBase {
   /**
    * Tests the content_translation_ui_skip key functionality.
    */
-  function testUICheckSkip() {
+  public function testUICheckSkip() {
     $admin_user = $this->drupalCreateUser([
       'translate any entity',
       'administer content translation',
diff --git a/core/modules/content_translation/tests/src/Functional/ContentTranslationUITestBase.php b/core/modules/content_translation/tests/src/Functional/ContentTranslationUITestBase.php
index accc3ca8c239ef23db2ad2db845e7d20123d2ed7..370a6ed409ebca8bfd47c4a7728554e00c23030e 100644
--- a/core/modules/content_translation/tests/src/Functional/ContentTranslationUITestBase.php
+++ b/core/modules/content_translation/tests/src/Functional/ContentTranslationUITestBase.php
@@ -53,7 +53,7 @@ abstract class ContentTranslationUITestBase extends ContentTranslationTestBase {
   /**
    * Tests the basic translation UI.
    */
-  function testTranslationUI() {
+  public function testTranslationUI() {
     $this->doTestBasicTranslation();
     $this->doTestTranslationOverview();
     $this->doTestOutdatedStatus();
diff --git a/core/modules/content_translation/tests/src/Kernel/ContentTranslationConfigImportTest.php b/core/modules/content_translation/tests/src/Kernel/ContentTranslationConfigImportTest.php
index 732d74be289cfa6d543502cbf37aea0bb1acc480..b8776a26a1b1733909f35bc324cc8456de65ca78 100644
--- a/core/modules/content_translation/tests/src/Kernel/ContentTranslationConfigImportTest.php
+++ b/core/modules/content_translation/tests/src/Kernel/ContentTranslationConfigImportTest.php
@@ -58,7 +58,7 @@ protected function setUp() {
   /**
    * Tests config import updates.
    */
-  function testConfigImportUpdates() {
+  public function testConfigImportUpdates() {
     $entity_type_id = 'entity_test_mul';
     $config_id = $entity_type_id . '.' . $entity_type_id;
     $config_name = 'language.content_settings.' . $config_id;
diff --git a/core/modules/content_translation/tests/src/Kernel/ContentTranslationSettingsApiTest.php b/core/modules/content_translation/tests/src/Kernel/ContentTranslationSettingsApiTest.php
index 9b64ba83d401cf9c4179ece0d862fda885604e2e..3626045fbf3a61d0bd5145f26c1224fb3e618dd8 100644
--- a/core/modules/content_translation/tests/src/Kernel/ContentTranslationSettingsApiTest.php
+++ b/core/modules/content_translation/tests/src/Kernel/ContentTranslationSettingsApiTest.php
@@ -29,7 +29,7 @@ protected function setUp() {
   /**
    * Tests that enabling translation via the API triggers schema updates.
    */
-  function testSettingsApi() {
+  public function testSettingsApi() {
     $this->container->get('content_translation.manager')->setEnabled('entity_test_mul', 'entity_test_mul', TRUE);
     $result =
       db_field_exists('entity_test_mul_property_data', 'content_translation_source') &&
diff --git a/core/modules/contextual/src/Tests/ContextualDynamicContextTest.php b/core/modules/contextual/src/Tests/ContextualDynamicContextTest.php
index e2c57fc1681447ebbcee22df48700719dd0c52f6..90b73d7006d16f7f555da53578353e0d6dc6cf50 100644
--- a/core/modules/contextual/src/Tests/ContextualDynamicContextTest.php
+++ b/core/modules/contextual/src/Tests/ContextualDynamicContextTest.php
@@ -64,7 +64,7 @@ protected function setUp() {
    * Ensures that contextual link placeholders always exist, even if the user is
    * not allowed to use contextual links.
    */
-  function testDifferentPermissions() {
+  public function testDifferentPermissions() {
     $this->drupalLogin($this->editorUser);
 
     // Create three nodes in the following order:
diff --git a/core/modules/contextual/tests/src/Kernel/ContextualUnitTest.php b/core/modules/contextual/tests/src/Kernel/ContextualUnitTest.php
index 1d86da06f091f9a17d3b0ff41a5e523334627940..f42bf20f80d5071a514ddbb6b06980e32b70e1fa 100644
--- a/core/modules/contextual/tests/src/Kernel/ContextualUnitTest.php
+++ b/core/modules/contextual/tests/src/Kernel/ContextualUnitTest.php
@@ -22,7 +22,7 @@ class ContextualUnitTest extends KernelTestBase {
   /**
    * Provides testcases for testContextualLinksToId() and
    */
-  function _contextual_links_id_testcases() {
+  public function _contextual_links_id_testcases() {
     // Test branch conditions:
     // - one group.
     // - one dynamic path argument.
@@ -110,7 +110,7 @@ function _contextual_links_id_testcases() {
   /**
    * Tests _contextual_links_to_id().
    */
-  function testContextualLinksToId() {
+  public function testContextualLinksToId() {
     $tests = $this->_contextual_links_id_testcases();
     foreach ($tests as $test) {
       $this->assertIdentical(_contextual_links_to_id($test['links']), $test['id']);
@@ -120,7 +120,7 @@ function testContextualLinksToId() {
   /**
    * Tests _contextual_id_to_links().
    */
-  function testContextualIdToLinks() {
+  public function testContextualIdToLinks() {
     $tests = $this->_contextual_links_id_testcases();
     foreach ($tests as $test) {
       $this->assertIdentical(_contextual_id_to_links($test['id']), $test['links']);
diff --git a/core/modules/datetime/src/Plugin/Field/FieldWidget/DateTimeDatelistWidget.php b/core/modules/datetime/src/Plugin/Field/FieldWidget/DateTimeDatelistWidget.php
index d1309767f47e2e459a2a2fc09be4d3b4558fd464..276d92c431911eb27c8f9c10e3e2c4e82eb75e65 100644
--- a/core/modules/datetime/src/Plugin/Field/FieldWidget/DateTimeDatelistWidget.php
+++ b/core/modules/datetime/src/Plugin/Field/FieldWidget/DateTimeDatelistWidget.php
@@ -88,7 +88,7 @@ public function formElement(FieldItemListInterface $items, $delta, array $elemen
   /**
    * {@inheritdoc}
    */
-  function settingsForm(array $form, FormStateInterface $form_state) {
+  public function settingsForm(array $form, FormStateInterface $form_state) {
     $element = parent::settingsForm($form, $form_state);
 
     $element['date_order'] = [
diff --git a/core/modules/datetime/src/Tests/DateTimeFieldTest.php b/core/modules/datetime/src/Tests/DateTimeFieldTest.php
index aeed9bc7a0c242e09c44fd8d3462df2ffe40f319..827c811f56a354ffe1e5f83c81c86139ba2739e7 100644
--- a/core/modules/datetime/src/Tests/DateTimeFieldTest.php
+++ b/core/modules/datetime/src/Tests/DateTimeFieldTest.php
@@ -36,7 +36,7 @@ protected function getTestFieldType() {
   /**
    * Tests date field functionality.
    */
-  function testDateField() {
+  public function testDateField() {
     $field_name = $this->fieldStorage->getName();
 
     // Loop through defined timezones to test that date-only fields work at the
@@ -205,7 +205,7 @@ function testDateField() {
   /**
    * Tests date and time field.
    */
-  function testDatetimeField() {
+  public function testDatetimeField() {
     $field_name = $this->fieldStorage->getName();
     // Change the field to a datetime field.
     $this->fieldStorage->setSetting('datetime_type', 'datetime');
@@ -348,7 +348,7 @@ function testDatetimeField() {
   /**
    * Tests Date List Widget functionality.
    */
-  function testDatelistWidget() {
+  public function testDatelistWidget() {
     $field_name = $this->fieldStorage->getName();
 
     // Ensure field is set to a date only field.
@@ -593,7 +593,7 @@ protected function datelistDataProvider() {
   /**
    * Test default value functionality.
    */
-  function testDefaultValue() {
+  public function testDefaultValue() {
     // Create a test content type.
     $this->drupalCreateContentType(['type' => 'date_content']);
 
@@ -715,7 +715,7 @@ function testDefaultValue() {
   /**
    * Test that invalid values are caught and marked as invalid.
    */
-  function testInvalidField() {
+  public function testInvalidField() {
     // Change the field to a datetime field.
     $this->fieldStorage->setSetting('datetime_type', 'datetime');
     $this->fieldStorage->save();
diff --git a/core/modules/dblog/src/Tests/DbLogTest.php b/core/modules/dblog/src/Tests/DbLogTest.php
index 878f632b00efda607cd8e980d10a6ac1e9244579..79cc0380541f816e91570bae641e29a60d0bbd9c 100644
--- a/core/modules/dblog/src/Tests/DbLogTest.php
+++ b/core/modules/dblog/src/Tests/DbLogTest.php
@@ -58,7 +58,7 @@ protected function setUp() {
    * Database Logging module functionality through both the admin and user
    * interfaces.
    */
-  function testDbLog() {
+  public function testDbLog() {
     // Log in the admin user.
     $this->drupalLogin($this->adminUser);
 
diff --git a/core/modules/dblog/tests/src/Functional/ConnectionFailureTest.php b/core/modules/dblog/tests/src/Functional/ConnectionFailureTest.php
index 44b045782dafbf5164bddb05091348f67d689884..37c855ae2cc8769d2e8bd951d8be32255d76f01a 100644
--- a/core/modules/dblog/tests/src/Functional/ConnectionFailureTest.php
+++ b/core/modules/dblog/tests/src/Functional/ConnectionFailureTest.php
@@ -17,7 +17,7 @@ class ConnectionFailureTest extends BrowserTestBase {
   /**
    * Tests logging of connection failures.
    */
-  function testConnectionFailureLogging() {
+  public function testConnectionFailureLogging() {
     $logger = \Drupal::service('logger.factory');
 
     // MySQL errors like "1153 - Got a packet bigger than 'max_allowed_packet'
diff --git a/core/modules/editor/src/Element.php b/core/modules/editor/src/Element.php
index 901731019be0e8bff051204e5a9e64839f378a7d..9f8ab916141f2cceeeb656a21fc24213cd48a33a 100644
--- a/core/modules/editor/src/Element.php
+++ b/core/modules/editor/src/Element.php
@@ -32,7 +32,7 @@ public function __construct(PluginManagerInterface $plugin_manager) {
   /**
    * Additional #pre_render callback for 'text_format' elements.
    */
-  function preRenderTextFormat(array $element) {
+  public function preRenderTextFormat(array $element) {
     // Allow modules to programmatically enforce no client-side editor by
     // setting the #editor property to FALSE.
     if (isset($element['#editor']) && !$element['#editor']) {
diff --git a/core/modules/editor/src/Plugin/InPlaceEditor/Editor.php b/core/modules/editor/src/Plugin/InPlaceEditor/Editor.php
index 27a700bd1e7fdc7e6f3b239aa99d94fef5389449..dab14ef01f5d3dbe9da42d343e2d481162c24c2f 100644
--- a/core/modules/editor/src/Plugin/InPlaceEditor/Editor.php
+++ b/core/modules/editor/src/Plugin/InPlaceEditor/Editor.php
@@ -43,7 +43,7 @@ public function isCompatible(FieldItemListInterface $items) {
   /**
    * {@inheritdoc}
    */
-  function getMetadata(FieldItemListInterface $items) {
+  public function getMetadata(FieldItemListInterface $items) {
     $format_id = $items[0]->format;
     $metadata['format'] = $format_id;
     $metadata['formatHasTransformations'] = $this->textFormatHasTransformationFilters($format_id);
diff --git a/core/modules/editor/src/Tests/EditorSecurityTest.php b/core/modules/editor/src/Tests/EditorSecurityTest.php
index 0c29a58d5ba84c7ce31f226f193d7725dba5eecc..d00fe0e684352ba8a356c9ba8964e5749900ae67 100644
--- a/core/modules/editor/src/Tests/EditorSecurityTest.php
+++ b/core/modules/editor/src/Tests/EditorSecurityTest.php
@@ -222,7 +222,7 @@ protected function setUp() {
    *
    * Tests 8 scenarios. Tests only with a text editor that is not XSS-safe.
    */
-  function testInitialSecurity() {
+  public function testInitialSecurity() {
     $expected = [
       [
         'node_id' => 1,
@@ -302,7 +302,7 @@ function testInitialSecurity() {
    * format and contains a <script> tag to the Full HTML text format, the
    * <script> tag would be executed. Unless we apply appropriate filtering.
    */
-  function testSwitchingSecurity() {
+  public function testSwitchingSecurity() {
     $expected = [
       [
         'node_id' => 1,
@@ -415,7 +415,7 @@ function testSwitchingSecurity() {
   /**
    * Tests the standard text editor XSS filter being overridden.
    */
-  function testEditorXssFilterOverride() {
+  public function testEditorXssFilterOverride() {
     // First: the Standard text editor XSS filter.
     $this->drupalLogin($this->normalUser);
     $this->drupalGet('node/2/edit');
diff --git a/core/modules/editor/tests/modules/src/Plugin/Editor/UnicornEditor.php b/core/modules/editor/tests/modules/src/Plugin/Editor/UnicornEditor.php
index ddc730cb36ba3bcc5ebc543952a5599f6194c1e8..b7b200e28b41b2637cc62b9af5b2342f1d551693 100644
--- a/core/modules/editor/tests/modules/src/Plugin/Editor/UnicornEditor.php
+++ b/core/modules/editor/tests/modules/src/Plugin/Editor/UnicornEditor.php
@@ -26,14 +26,14 @@ class UnicornEditor extends EditorBase {
   /**
    * {@inheritdoc}
    */
-  function getDefaultSettings() {
+  public function getDefaultSettings() {
     return ['ponies_too' => TRUE];
   }
 
   /**
    * {@inheritdoc}
    */
-  function settingsForm(array $form, FormStateInterface $form_state, Editor $editor) {
+  public function settingsForm(array $form, FormStateInterface $form_state, Editor $editor) {
     $form['ponies_too'] = [
       '#title' => t('Pony mode'),
       '#type' => 'checkbox',
@@ -45,7 +45,7 @@ function settingsForm(array $form, FormStateInterface $form_state, Editor $edito
   /**
    * {@inheritdoc}
    */
-  function getJSSettings(Editor $editor) {
+  public function getJSSettings(Editor $editor) {
     $js_settings = [];
     $settings = $editor->getSettings();
     if ($settings['ponies_too']) {
diff --git a/core/modules/editor/tests/src/Functional/EditorPrivateFileReferenceFilterTest.php b/core/modules/editor/tests/src/Functional/EditorPrivateFileReferenceFilterTest.php
index 4ca923bdebcec46227d4dfb64939567a07eb36b2..3e3f3d187c2ebbcf9159f036a3202f0801a43ffe 100644
--- a/core/modules/editor/tests/src/Functional/EditorPrivateFileReferenceFilterTest.php
+++ b/core/modules/editor/tests/src/Functional/EditorPrivateFileReferenceFilterTest.php
@@ -36,7 +36,7 @@ class EditorPrivateFileReferenceFilterTest extends BrowserTestBase {
   /**
    * Tests the editor file reference filter with private files.
    */
-  function testEditorPrivateFileReferenceFilter() {
+  public function testEditorPrivateFileReferenceFilter() {
     $author = $this->drupalCreateUser();
     $this->drupalLogin($author);
 
diff --git a/core/modules/editor/tests/src/Kernel/EditorFileReferenceFilterTest.php b/core/modules/editor/tests/src/Kernel/EditorFileReferenceFilterTest.php
index 621aabe4bdec3e0f2676ba4b988b34561582809a..c68ae48e6e333accb658ebfcbdad4cb6e0459c28 100644
--- a/core/modules/editor/tests/src/Kernel/EditorFileReferenceFilterTest.php
+++ b/core/modules/editor/tests/src/Kernel/EditorFileReferenceFilterTest.php
@@ -43,7 +43,7 @@ protected function setUp() {
   /**
    * Tests the editor file reference filter.
    */
-  function testEditorFileReferenceFilter() {
+  public function testEditorFileReferenceFilter() {
     $filter = $this->filters['editor_file_reference'];
 
     $test = function($input) use ($filter) {
diff --git a/core/modules/field/src/Tests/Boolean/BooleanFieldTest.php b/core/modules/field/src/Tests/Boolean/BooleanFieldTest.php
index 17292e09d8d51b7d017685178ca86c007080ed3a..6fc6c6dc9f0b5846588549d85518b5a1363330b2 100644
--- a/core/modules/field/src/Tests/Boolean/BooleanFieldTest.php
+++ b/core/modules/field/src/Tests/Boolean/BooleanFieldTest.php
@@ -58,7 +58,7 @@ protected function setUp() {
   /**
    * Tests boolean field.
    */
-  function testBooleanField() {
+  public function testBooleanField() {
     $on = $this->randomMachineName();
     $off = $this->randomMachineName();
     $label = $this->randomMachineName();
diff --git a/core/modules/field/src/Tests/Boolean/BooleanFormatterSettingsTest.php b/core/modules/field/src/Tests/Boolean/BooleanFormatterSettingsTest.php
index f45442060bc976f4e2c654c07e18b4db6be403da..92efa9817bc837450e5bddb99ef2511b17f8c2d8 100644
--- a/core/modules/field/src/Tests/Boolean/BooleanFormatterSettingsTest.php
+++ b/core/modules/field/src/Tests/Boolean/BooleanFormatterSettingsTest.php
@@ -77,7 +77,7 @@ protected function setUp() {
   /**
    * Tests the formatter settings page for the Boolean formatter.
    */
-  function testBooleanFormatterSettings() {
+  public function testBooleanFormatterSettings() {
     // List the options we expect to see on the settings form. Omit the one
     // with the Unicode check/x characters, which does not appear to work
     // well in WebTestBase.
diff --git a/core/modules/field/src/Tests/Email/EmailFieldTest.php b/core/modules/field/src/Tests/Email/EmailFieldTest.php
index 779870ced3d206f6c64186d398a95816492c57b1..269d91f657261fba6ed8602268a94283b07de12d 100644
--- a/core/modules/field/src/Tests/Email/EmailFieldTest.php
+++ b/core/modules/field/src/Tests/Email/EmailFieldTest.php
@@ -49,7 +49,7 @@ protected function setUp() {
   /**
    * Tests email field.
    */
-  function testEmailField() {
+  public function testEmailField() {
     // Create a field with settings to validate.
     $field_name = Unicode::strtolower($this->randomMachineName());
     $this->fieldStorage = FieldStorageConfig::create([
diff --git a/core/modules/field/src/Tests/FieldTestBase.php b/core/modules/field/src/Tests/FieldTestBase.php
index ce4161bc9b417746b431a30a751d3ca3665911e3..57225cb347ca33d4f6ba6d52343a4447fe7a0747 100644
--- a/core/modules/field/src/Tests/FieldTestBase.php
+++ b/core/modules/field/src/Tests/FieldTestBase.php
@@ -22,7 +22,7 @@ abstract class FieldTestBase extends WebTestBase {
    * @return
    *   An array of random values, in the format expected for field values.
    */
-  function _generateTestFieldValues($cardinality) {
+  public function _generateTestFieldValues($cardinality) {
     $values = [];
     for ($i = 0; $i < $cardinality; $i++) {
       // field_test fields treat 0 as 'empty value'.
@@ -48,7 +48,7 @@ function _generateTestFieldValues($cardinality) {
    * @param $column
    *   (Optional) The name of the column to check. Defaults to 'value'.
    */
-  function assertFieldValues(EntityInterface $entity, $field_name, $expected_values, $langcode = LanguageInterface::LANGCODE_DEFAULT, $column = 'value') {
+  public function assertFieldValues(EntityInterface $entity, $field_name, $expected_values, $langcode = LanguageInterface::LANGCODE_DEFAULT, $column = 'value') {
     // Re-load the entity to make sure we have the latest changes.
     $storage = $this->container->get('entity_type.manager')
       ->getStorage($entity->getEntityTypeId());
diff --git a/core/modules/field/src/Tests/FormTest.php b/core/modules/field/src/Tests/FormTest.php
index 77cc27441da2d15b1ee60e8a11b37e10b553837d..ff1b3ee67be25c90406fe9b32dc0f02b53f88528 100644
--- a/core/modules/field/src/Tests/FormTest.php
+++ b/core/modules/field/src/Tests/FormTest.php
@@ -91,7 +91,7 @@ protected function setUp() {
     ];
   }
 
-  function testFieldFormSingle() {
+  public function testFieldFormSingle() {
     $field_storage = $this->fieldStorageSingle;
     $field_name = $field_storage['field_name'];
     $this->field['field_name'] = $field_name;
@@ -165,7 +165,7 @@ function testFieldFormSingle() {
   /**
    * Tests field widget default values on entity forms.
    */
-  function testFieldFormDefaultValue() {
+  public function testFieldFormDefaultValue() {
     $field_storage = $this->fieldStorageSingle;
     $field_name = $field_storage['field_name'];
     $this->field['field_name'] = $field_name;
@@ -194,7 +194,7 @@ function testFieldFormDefaultValue() {
     $this->assertTrue($entity->{$field_name}->isEmpty(), 'Field is now empty.');
   }
 
-  function testFieldFormSingleRequired() {
+  public function testFieldFormSingleRequired() {
     $field_storage = $this->fieldStorageSingle;
     $field_name = $field_storage['field_name'];
     $this->field['field_name'] = $field_name;
@@ -231,7 +231,7 @@ function testFieldFormSingleRequired() {
     $this->assertRaw(t('@name field is required.', ['@name' => $this->field['label']]), 'Required field with no value fails validation');
   }
 
-  function testFieldFormUnlimited() {
+  public function testFieldFormUnlimited() {
     $field_storage = $this->fieldStorageUnlimited;
     $field_name = $field_storage['field_name'];
     $this->field['field_name'] = $field_name;
@@ -341,7 +341,7 @@ public function testFieldFormUnlimitedRequired() {
   /**
    * Tests widget handling of multiple required radios.
    */
-  function testFieldFormMultivalueWithRequiredRadio() {
+  public function testFieldFormMultivalueWithRequiredRadio() {
     // Create a multivalue test field.
     $field_storage = $this->fieldStorageUnlimited;
     $field_name = $field_storage['field_name'];
@@ -389,7 +389,7 @@ function testFieldFormMultivalueWithRequiredRadio() {
     $this->assertNoField("{$field_name}[2][value]", 'No extraneous widget is displayed');
   }
 
-  function testFieldFormJSAddMore() {
+  public function testFieldFormJSAddMore() {
     $field_storage = $this->fieldStorageUnlimited;
     $field_name = $field_storage['field_name'];
     $this->field['field_name'] = $field_name;
@@ -448,7 +448,7 @@ function testFieldFormJSAddMore() {
   /**
    * Tests widgets handling multiple values.
    */
-  function testFieldFormMultipleWidget() {
+  public function testFieldFormMultipleWidget() {
     // Create a field with fixed cardinality, configure the form to use a
     // "multiple" widget.
     $field_storage = $this->fieldStorageMultiple;
@@ -493,7 +493,7 @@ function testFieldFormMultipleWidget() {
   /**
    * Tests fields with no 'edit' access.
    */
-  function testFieldFormAccess() {
+  public function testFieldFormAccess() {
     $entity_type = 'entity_test_rev';
     // Create a "regular" field.
     $field_storage = $this->fieldStorageSingle;
@@ -585,7 +585,7 @@ function testFieldFormAccess() {
   /**
    * Tests hiding a field in a form.
    */
-  function testHiddenField() {
+  public function testHiddenField() {
     $entity_type = 'entity_test_rev';
     $field_storage = $this->fieldStorageSingle;
     $field_storage['entity_type'] = $entity_type;
diff --git a/core/modules/field/src/Tests/NestedFormTest.php b/core/modules/field/src/Tests/NestedFormTest.php
index 530bb20f182cf93100f630cee56b6cb17090b6e4..e9b5f0540930da2ba43bcb09eac750347f8ae638 100644
--- a/core/modules/field/src/Tests/NestedFormTest.php
+++ b/core/modules/field/src/Tests/NestedFormTest.php
@@ -52,7 +52,7 @@ protected function setUp() {
   /**
    * Tests Field API form integration within a subform.
    */
-  function testNestedFieldForm() {
+  public function testNestedFieldForm() {
     // Add two fields on the 'entity_test'
     FieldStorageConfig::create($this->fieldStorageSingle)->save();
     FieldStorageConfig::create($this->fieldStorageUnlimited)->save();
diff --git a/core/modules/field/src/Tests/Number/NumberFieldTest.php b/core/modules/field/src/Tests/Number/NumberFieldTest.php
index 3fea6166b2ffffc4339f7659b11c93cf90cd1a03..c69141050fe01680973c33c0b5300a160367c4a6 100644
--- a/core/modules/field/src/Tests/Number/NumberFieldTest.php
+++ b/core/modules/field/src/Tests/Number/NumberFieldTest.php
@@ -38,7 +38,7 @@ protected function setUp() {
   /**
    * Test decimal field.
    */
-  function testNumberDecimalField() {
+  public function testNumberDecimalField() {
     // Create a field with settings to validate.
     $field_name = Unicode::strtolower($this->randomMachineName());
     FieldStorageConfig::create([
@@ -125,7 +125,7 @@ function testNumberDecimalField() {
   /**
    * Test integer field.
    */
-  function testNumberIntegerField() {
+  public function testNumberIntegerField() {
     $minimum = rand(-4000, -2000);
     $maximum = rand(2000, 4000);
 
@@ -271,7 +271,7 @@ function testNumberIntegerField() {
   /**
   * Test float field.
   */
-  function testNumberFloatField() {
+  public function testNumberFloatField() {
     // Create a field with settings to validate.
     $field_name = Unicode::strtolower($this->randomMachineName());
     FieldStorageConfig::create([
@@ -361,7 +361,7 @@ function testNumberFloatField() {
   /**
    * Test default formatter behavior
    */
-  function testNumberFormatter() {
+  public function testNumberFormatter() {
     $type = Unicode::strtolower($this->randomMachineName());
     $float_field = Unicode::strtolower($this->randomMachineName());
     $integer_field = Unicode::strtolower($this->randomMachineName());
@@ -492,7 +492,7 @@ function testNumberFormatter() {
   /**
    * Tests setting the minimum value of a float field through the interface.
    */
-  function testCreateNumberFloatField() {
+  public function testCreateNumberFloatField() {
     // Create a float field.
     $field_name = Unicode::strtolower($this->randomMachineName());
     FieldStorageConfig::create([
@@ -517,7 +517,7 @@ function testCreateNumberFloatField() {
   /**
    * Tests setting the minimum value of a decimal field through the interface.
    */
-  function testCreateNumberDecimalField() {
+  public function testCreateNumberDecimalField() {
     // Create a decimal field.
     $field_name = Unicode::strtolower($this->randomMachineName());
     FieldStorageConfig::create([
@@ -542,7 +542,7 @@ function testCreateNumberDecimalField() {
   /**
    * Helper function to set the minimum value of a field.
    */
-  function assertSetMinimumValue($field, $minimum_value) {
+  public function assertSetMinimumValue($field, $minimum_value) {
     $field_configuration_url = 'entity_test/structure/entity_test/fields/entity_test.entity_test.' . $field->getName();
 
     // Set the minimum value.
diff --git a/core/modules/field/src/Tests/String/StringFieldTest.php b/core/modules/field/src/Tests/String/StringFieldTest.php
index 6bd034d613010adfd1053cf954027a3b9c391a1b..97e470e92b953638bc2c7090be9c6cdc332451d1 100644
--- a/core/modules/field/src/Tests/String/StringFieldTest.php
+++ b/core/modules/field/src/Tests/String/StringFieldTest.php
@@ -41,7 +41,7 @@ protected function setUp() {
   /**
    * Test widgets.
    */
-  function testTextfieldWidgets() {
+  public function testTextfieldWidgets() {
     $this->_testTextfieldWidgets('string', 'string_textfield');
     $this->_testTextfieldWidgets('string_long', 'string_textarea');
   }
@@ -49,7 +49,7 @@ function testTextfieldWidgets() {
   /**
    * Helper function for testTextfieldWidgets().
    */
-  function _testTextfieldWidgets($field_type, $widget_type) {
+  public function _testTextfieldWidgets($field_type, $widget_type) {
     // Create a field.
     $field_name = Unicode::strtolower($this->randomMachineName());
     $field_storage = FieldStorageConfig::create([
diff --git a/core/modules/field/src/Tests/Views/FieldTestBase.php b/core/modules/field/src/Tests/Views/FieldTestBase.php
index cd579943757f8cd444337d821dbeae2cb115c41d..f04e19fb9bdf50520f0cfa19ea11cd4d73d7b9b7 100644
--- a/core/modules/field/src/Tests/Views/FieldTestBase.php
+++ b/core/modules/field/src/Tests/Views/FieldTestBase.php
@@ -54,7 +54,7 @@ protected function setUp() {
     ViewTestData::createTestViews(get_class($this), ['field_test_views']);
   }
 
-  function setUpFieldStorages($amount = 3, $type = 'string') {
+  public function setUpFieldStorages($amount = 3, $type = 'string') {
     // Create three fields.
     $field_names = [];
     for ($i = 0; $i < $amount; $i++) {
@@ -69,7 +69,7 @@ function setUpFieldStorages($amount = 3, $type = 'string') {
     return $field_names;
   }
 
-  function setUpFields($bundle = 'page') {
+  public function setUpFields($bundle = 'page') {
     foreach ($this->fieldStorages as $key => $field_storage) {
       $this->fields[$key] = FieldConfig::create([
         'field_storage' => $field_storage,
diff --git a/core/modules/field/src/Tests/reEnableModuleFieldTest.php b/core/modules/field/src/Tests/reEnableModuleFieldTest.php
index 141b5e12bad998125e6ad7a78a676a611dce0051..24c0effef2d52359c93f3f799cfec3b4624751cf 100644
--- a/core/modules/field/src/Tests/reEnableModuleFieldTest.php
+++ b/core/modules/field/src/Tests/reEnableModuleFieldTest.php
@@ -41,7 +41,7 @@ protected function setUp() {
    *
    * @see field_system_info_alter()
    */
-  function testReEnabledField() {
+  public function testReEnabledField() {
 
     // Add a telephone field to the article content type.
     $field_storage = FieldStorageConfig::create([
diff --git a/core/modules/field/tests/src/Functional/EntityReference/EntityReferenceFieldDefaultValueTest.php b/core/modules/field/tests/src/Functional/EntityReference/EntityReferenceFieldDefaultValueTest.php
index 2f55cd54c30a25f227fd71bc3a79b8db85ba79a1..4567bd07e9e72743ef99e7294830c22c5b6c2c8c 100644
--- a/core/modules/field/tests/src/Functional/EntityReference/EntityReferenceFieldDefaultValueTest.php
+++ b/core/modules/field/tests/src/Functional/EntityReference/EntityReferenceFieldDefaultValueTest.php
@@ -47,7 +47,7 @@ protected function setUp() {
   /**
    * Tests that default values are correctly translated to UUIDs in config.
    */
-  function testEntityReferenceDefaultValue() {
+  public function testEntityReferenceDefaultValue() {
     // Create a node to be referenced.
     $referenced_node = $this->drupalCreateNode(['type' => 'referenced_content']);
 
@@ -109,7 +109,7 @@ function testEntityReferenceDefaultValue() {
    *
    * @see \Drupal\Core\Field\Plugin\Field\FieldType\EntityReferenceItem::onDependencyRemoval()
    */
-  function testEntityReferenceDefaultConfigValue() {
+  public function testEntityReferenceDefaultConfigValue() {
     // Create a node to be referenced.
     $referenced_node_type = $this->drupalCreateContentType(['type' => 'referenced_config_to_delete']);
     $referenced_node_type2 = $this->drupalCreateContentType(['type' => 'referenced_config_to_preserve']);
diff --git a/core/modules/field/tests/src/Functional/FieldAccessTest.php b/core/modules/field/tests/src/Functional/FieldAccessTest.php
index 36f0ef97997cdbc578555360723ed7e66af044e5..c7f234fd49997f0187b211ad08f2947e6c3f10e3 100644
--- a/core/modules/field/tests/src/Functional/FieldAccessTest.php
+++ b/core/modules/field/tests/src/Functional/FieldAccessTest.php
@@ -75,7 +75,7 @@ protected function setUp() {
   /**
    * Test that hook_entity_field_access() is called.
    */
-  function testFieldAccess() {
+  public function testFieldAccess() {
 
     // Assert the text is visible.
     $this->drupalGet('node/' . $this->node->id());
diff --git a/core/modules/field/tests/src/Functional/FieldTestBase.php b/core/modules/field/tests/src/Functional/FieldTestBase.php
index 108d5f5d7cd5f367a66ec32adaf5ad31daa6e661..bdd60737a961dbfa15e32314cc140522296659c5 100644
--- a/core/modules/field/tests/src/Functional/FieldTestBase.php
+++ b/core/modules/field/tests/src/Functional/FieldTestBase.php
@@ -19,7 +19,7 @@ abstract class FieldTestBase extends BrowserTestBase {
    * @return
    *   An array of random values, in the format expected for field values.
    */
-  function _generateTestFieldValues($cardinality) {
+  public function _generateTestFieldValues($cardinality) {
     $values = [];
     for ($i = 0; $i < $cardinality; $i++) {
       // field_test fields treat 0 as 'empty value'.
@@ -45,7 +45,7 @@ function _generateTestFieldValues($cardinality) {
    * @param $column
    *   (Optional) The name of the column to check. Defaults to 'value'.
    */
-  function assertFieldValues(EntityInterface $entity, $field_name, $expected_values, $langcode = LanguageInterface::LANGCODE_DEFAULT, $column = 'value') {
+  public function assertFieldValues(EntityInterface $entity, $field_name, $expected_values, $langcode = LanguageInterface::LANGCODE_DEFAULT, $column = 'value') {
     // Re-load the entity to make sure we have the latest changes.
     $storage = $this->container->get('entity_type.manager')
       ->getStorage($entity->getEntityTypeId());
diff --git a/core/modules/field/tests/src/Functional/TranslationWebTest.php b/core/modules/field/tests/src/Functional/TranslationWebTest.php
index e09e5851ba9fa98f9d8ea1856d1ae8487bc601a6..19af64d917e6752f68df8bded1f8e900f6581147 100644
--- a/core/modules/field/tests/src/Functional/TranslationWebTest.php
+++ b/core/modules/field/tests/src/Functional/TranslationWebTest.php
@@ -85,7 +85,7 @@ protected function setUp() {
   /**
    * Tests field translations when creating a new revision.
    */
-  function testFieldFormTranslationRevisions() {
+  public function testFieldFormTranslationRevisions() {
     $web_user = $this->drupalCreateUser(['view test entity', 'administer entity_test content']);
     $this->drupalLogin($web_user);
 
diff --git a/core/modules/field/tests/src/Kernel/BulkDeleteTest.php b/core/modules/field/tests/src/Kernel/BulkDeleteTest.php
index f0497d64a65f14e4d76f07618a66d69cd1db28dc..900c154b4b065bae865df958ad81be5d687c2bef 100644
--- a/core/modules/field/tests/src/Kernel/BulkDeleteTest.php
+++ b/core/modules/field/tests/src/Kernel/BulkDeleteTest.php
@@ -58,7 +58,7 @@ class BulkDeleteTest extends FieldKernelTestBase {
    * @param $actual_hooks
    *   The array of actual hook invocations recorded by field_test_memorize().
    */
-  function checkHooksInvocations($expected_hooks, $actual_hooks) {
+  public function checkHooksInvocations($expected_hooks, $actual_hooks) {
     foreach ($expected_hooks as $hook => $invocations) {
       $actual_invocations = $actual_hooks[$hook];
 
@@ -158,7 +158,7 @@ protected function setUp() {
    * This tests how EntityFieldQuery interacts with field deletion and could be
    * moved to FieldCrudTestCase, but depends on this class's setUp().
    */
-  function testDeleteField() {
+  public function testDeleteField() {
     $bundle = reset($this->bundles);
     $field_storage = reset($this->fieldStorages);
     $field_name = $field_storage->getName();
@@ -307,7 +307,7 @@ public function testPurgeWithDeletedAndActiveField() {
    * Verify that field data items and fields are purged when a field storage is
    * deleted.
    */
-  function testPurgeField() {
+  public function testPurgeField() {
     // Start recording hook invocations.
     field_test_memorize();
 
@@ -368,7 +368,7 @@ function testPurgeField() {
    * Verify that field storages are preserved and purged correctly as multiple
    * fields are deleted and purged.
    */
-  function testPurgeFieldStorage() {
+  public function testPurgeFieldStorage() {
     // Start recording hook invocations.
     field_test_memorize();
 
diff --git a/core/modules/field/tests/src/Kernel/DisplayApiTest.php b/core/modules/field/tests/src/Kernel/DisplayApiTest.php
index 1072de19bc063677f402332145adcc4630b3070b..3cbf63eb19beea0bd4c88a52a1c3f8fbe6aece8b 100644
--- a/core/modules/field/tests/src/Kernel/DisplayApiTest.php
+++ b/core/modules/field/tests/src/Kernel/DisplayApiTest.php
@@ -119,7 +119,7 @@ protected function setUp() {
   /**
    * Tests the FieldItemListInterface::view() method.
    */
-  function testFieldItemListView() {
+  public function testFieldItemListView() {
     $items = $this->entity->get($this->fieldName);
 
     \Drupal::service('theme_handler')->install(['classy']);
@@ -218,7 +218,7 @@ function testFieldItemListView() {
   /**
    * Tests the FieldItemInterface::view() method.
    */
-  function testFieldItemView() {
+  public function testFieldItemView() {
     // No display settings: check that default display settings are used.
     $settings = \Drupal::service('plugin.manager.field.formatter')->getDefaultSettings('field_test_default');
     $setting = $settings['test_formatter_setting'];
@@ -282,7 +282,7 @@ function testFieldItemView() {
   /**
    * Tests that the prepareView() formatter method still fires for empty values.
    */
-  function testFieldEmpty() {
+  public function testFieldEmpty() {
     // Uses \Drupal\field_test\Plugin\Field\FieldFormatter\TestFieldEmptyFormatter.
     $display = [
       'label' => 'hidden',
diff --git a/core/modules/field/tests/src/Kernel/FieldAttachOtherTest.php b/core/modules/field/tests/src/Kernel/FieldAttachOtherTest.php
index c1e7ae1c51e891201c91ff7aea6ef86a40d40029..05fdfae386b72c468a4f658907be2bc312cd9797 100644
--- a/core/modules/field/tests/src/Kernel/FieldAttachOtherTest.php
+++ b/core/modules/field/tests/src/Kernel/FieldAttachOtherTest.php
@@ -23,7 +23,7 @@ protected function setUp() {
   /**
    * Test rendering fields with EntityDisplay build().
    */
-  function testEntityDisplayBuild() {
+  public function testEntityDisplayBuild() {
     $this->createFieldWithStorage('_2');
 
     $entity_type = 'entity_test';
@@ -133,7 +133,7 @@ function testEntityDisplayBuild() {
   /**
    * Tests rendering fields with EntityDisplay::buildMultiple().
    */
-  function testEntityDisplayViewMultiple() {
+  public function testEntityDisplayViewMultiple() {
     // Use a formatter that has a prepareView() step.
     $display = entity_get_display('entity_test', 'entity_test', 'full')
       ->setComponent($this->fieldTestData->field_name, [
@@ -160,7 +160,7 @@ function testEntityDisplayViewMultiple() {
    * Complements unit test coverage in
    * \Drupal\Tests\Core\Entity\Sql\SqlContentEntityStorageTest.
    */
-  function testEntityCache() {
+  public function testEntityCache() {
     // Initialize random values and a test entity.
     $entity_init = EntityTest::create(['type' => $this->fieldTestData->field->getTargetBundle()]);
     $values = $this->_generateTestFieldValues($this->fieldTestData->field_storage->getCardinality());
@@ -243,7 +243,7 @@ function testEntityCache() {
    * This could be much more thorough, but it does verify that the correct
    * widgets show up.
    */
-  function testEntityFormDisplayBuildForm() {
+  public function testEntityFormDisplayBuildForm() {
     $this->createFieldWithStorage('_2');
 
     $entity_type = 'entity_test';
@@ -288,7 +288,7 @@ function testEntityFormDisplayBuildForm() {
   /**
    * Tests \Drupal\Core\Entity\Display\EntityFormDisplayInterface::extractFormValues().
    */
-  function testEntityFormDisplayExtractFormValues() {
+  public function testEntityFormDisplayExtractFormValues() {
     $this->createFieldWithStorage('_2');
 
     $entity_type = 'entity_test';
diff --git a/core/modules/field/tests/src/Kernel/FieldAttachStorageTest.php b/core/modules/field/tests/src/Kernel/FieldAttachStorageTest.php
index 9f0eef33d24c5cfb86d5c9172c2d9fdaba94aac4..03ed8cda904c3f4912493c170c1c4a92dd62b33e 100644
--- a/core/modules/field/tests/src/Kernel/FieldAttachStorageTest.php
+++ b/core/modules/field/tests/src/Kernel/FieldAttachStorageTest.php
@@ -24,7 +24,7 @@ protected function setUp() {
    * Works independently of the underlying field storage backend. Inserts or
    * updates random field data and then loads and verifies the data.
    */
-  function testFieldAttachSaveLoad() {
+  public function testFieldAttachSaveLoad() {
     $entity_type = 'entity_test_rev';
     $this->createFieldWithStorage('', $entity_type);
     $cardinality = $this->fieldTestData->field_storage->getCardinality();
@@ -72,7 +72,7 @@ function testFieldAttachSaveLoad() {
   /**
    * Test the 'multiple' load feature.
    */
-  function testFieldAttachLoadMultiple() {
+  public function testFieldAttachLoadMultiple() {
     $entity_type = 'entity_test_rev';
 
     // Define 2 bundles.
@@ -144,7 +144,7 @@ function testFieldAttachLoadMultiple() {
   /**
    * Tests insert and update with empty or NULL fields.
    */
-  function testFieldAttachSaveEmptyData() {
+  public function testFieldAttachSaveEmptyData() {
     $entity_type = 'entity_test';
     $this->createFieldWithStorage('', $entity_type);
 
@@ -192,7 +192,7 @@ function testFieldAttachSaveEmptyData() {
   /**
    * Test insert with empty or NULL fields, with default value.
    */
-  function testFieldAttachSaveEmptyDataDefaultValue() {
+  public function testFieldAttachSaveEmptyDataDefaultValue() {
     $entity_type = 'entity_test_rev';
     $this->createFieldWithStorage('', $entity_type);
 
@@ -225,7 +225,7 @@ function testFieldAttachSaveEmptyDataDefaultValue() {
   /**
    * Test entity deletion.
    */
-  function testFieldAttachDelete() {
+  public function testFieldAttachDelete() {
     $entity_type = 'entity_test_rev';
     $this->createFieldWithStorage('', $entity_type);
     $cardinality = $this->fieldTestData->field_storage->getCardinality();
@@ -285,7 +285,7 @@ function testFieldAttachDelete() {
   /**
    * Test entity_bundle_create().
    */
-  function testEntityCreateBundle() {
+  public function testEntityCreateBundle() {
     $entity_type = 'entity_test_rev';
     $this->createFieldWithStorage('', $entity_type);
     $cardinality = $this->fieldTestData->field_storage->getCardinality();
@@ -313,7 +313,7 @@ function testEntityCreateBundle() {
   /**
    * Test entity_bundle_delete().
    */
-  function testEntityDeleteBundle() {
+  public function testEntityDeleteBundle() {
     $entity_type = 'entity_test_rev';
     $this->createFieldWithStorage('', $entity_type);
 
diff --git a/core/modules/field/tests/src/Kernel/FieldCrudTest.php b/core/modules/field/tests/src/Kernel/FieldCrudTest.php
index 85121c96e741e6f4fbeb8adf0bd0b8ee9cd0460f..87441dc4079b3e15e058c1592be671d44fc691f6 100644
--- a/core/modules/field/tests/src/Kernel/FieldCrudTest.php
+++ b/core/modules/field/tests/src/Kernel/FieldCrudTest.php
@@ -37,7 +37,7 @@ class FieldCrudTest extends FieldKernelTestBase {
    */
   protected $fieldDefinition;
 
-  function setUp() {
+  public function setUp() {
     parent::setUp();
 
     $this->fieldStorageDefinition = [
@@ -63,7 +63,7 @@ function setUp() {
   /**
    * Test the creation of a field.
    */
-  function testCreateField() {
+  public function testCreateField() {
     // Set a state flag so that field_test.module knows to add an in-memory
     // constraint for this field.
     \Drupal::state()->set('field_test_add_constraint', $this->fieldStorage->getName());
@@ -174,7 +174,7 @@ public function testCreateFieldCustomStorage() {
   /**
    * Test reading back a field definition.
    */
-  function testReadField() {
+  public function testReadField() {
     FieldConfig::create($this->fieldDefinition)->save();
 
     // Read the field back.
@@ -187,7 +187,7 @@ function testReadField() {
   /**
    * Test the update of a field.
    */
-  function testUpdateField() {
+  public function testUpdateField() {
     FieldConfig::create($this->fieldDefinition)->save();
 
     // Check that basic changes are saved.
@@ -209,7 +209,7 @@ function testUpdateField() {
   /**
    * Test the deletion of a field.
    */
-  function testDeleteField() {
+  public function testDeleteField() {
     // TODO: Test deletion of the data stored in the field also.
     // Need to check that data for a 'deleted' field / storage doesn't get loaded
     // Need to check data marked deleted is cleaned on cron (not implemented yet...)
@@ -243,7 +243,7 @@ function testDeleteField() {
   /**
    * Tests the cross deletion behavior between field storages and fields.
    */
-  function testDeleteFieldCrossDeletion() {
+  public function testDeleteFieldCrossDeletion() {
     $field_definition_2 = $this->fieldDefinition;
     $field_definition_2['bundle'] .= '_another_bundle';
     entity_test_create_bundle($field_definition_2['bundle']);
diff --git a/core/modules/field/tests/src/Kernel/FieldImportChangeTest.php b/core/modules/field/tests/src/Kernel/FieldImportChangeTest.php
index 10eff6d6ecaebe8d643ad1fe4654d411e11c470f..9b8391961e8ce6537ac9bf86864d07843f1fea3b 100644
--- a/core/modules/field/tests/src/Kernel/FieldImportChangeTest.php
+++ b/core/modules/field/tests/src/Kernel/FieldImportChangeTest.php
@@ -25,7 +25,7 @@ class FieldImportChangeTest extends FieldKernelTestBase {
   /**
    * Tests importing an updated field.
    */
-  function testImportChange() {
+  public function testImportChange() {
     $this->installConfig(['field_test_config']);
     $field_storage_id = 'field_test_import';
     $field_id = "entity_test.entity_test.$field_storage_id";
diff --git a/core/modules/field/tests/src/Kernel/FieldImportCreateTest.php b/core/modules/field/tests/src/Kernel/FieldImportCreateTest.php
index 007bb0f6e01cef34462d9b21764a867cb0b5afa9..5e155824f913e5507c8f3279513459a03f410047 100644
--- a/core/modules/field/tests/src/Kernel/FieldImportCreateTest.php
+++ b/core/modules/field/tests/src/Kernel/FieldImportCreateTest.php
@@ -16,7 +16,7 @@ class FieldImportCreateTest extends FieldKernelTestBase {
   /**
    * Tests creating field storages and fields during default config import.
    */
-  function testImportCreateDefault() {
+  public function testImportCreateDefault() {
     $field_name = 'field_test_import';
     $field_storage_id = "entity_test.$field_name";
     $field_id = "entity_test.entity_test.$field_name";
@@ -70,7 +70,7 @@ function testImportCreateDefault() {
   /**
    * Tests creating field storages and fields during config import.
    */
-  function testImportCreate() {
+  public function testImportCreate() {
     // A field storage with one single field.
     $field_name = 'field_test_import_sync';
     $field_storage_id = "entity_test.$field_name";
diff --git a/core/modules/field/tests/src/Kernel/FieldStorageCrudTest.php b/core/modules/field/tests/src/Kernel/FieldStorageCrudTest.php
index 13091c4dffe283682b6b26138e6a5f3d5debdb48..f7993dcc7e57f8bc825be8db3c8025fca02dee40 100644
--- a/core/modules/field/tests/src/Kernel/FieldStorageCrudTest.php
+++ b/core/modules/field/tests/src/Kernel/FieldStorageCrudTest.php
@@ -31,7 +31,7 @@ class FieldStorageCrudTest extends FieldKernelTestBase {
   /**
    * Test the creation of a field storage.
    */
-  function testCreate() {
+  public function testCreate() {
     $field_storage_definition = [
       'field_name' => 'field_2',
       'entity_type' => 'entity_test',
@@ -186,7 +186,7 @@ function testCreate() {
    * This behavior is needed to allow field storage creation within updates,
    * since plugin classes (and thus the field type schema) cannot be accessed.
    */
-  function testCreateWithExplicitSchema() {
+  public function testCreateWithExplicitSchema() {
     $schema = [
       'dummy' => 'foobar'
     ];
@@ -202,7 +202,7 @@ function testCreateWithExplicitSchema() {
   /**
    * Tests reading field storage definitions.
    */
-  function testRead() {
+  public function testRead() {
     $field_storage_definition = [
       'field_name' => 'field_1',
       'entity_type' => 'entity_test',
@@ -234,7 +234,7 @@ function testRead() {
   /**
    * Test creation of indexes on data column.
    */
-  function testIndexes() {
+  public function testIndexes() {
     // Check that indexes specified by the field type are used by default.
     $field_storage = FieldStorageConfig::create([
       'field_name' => 'field_1',
@@ -284,7 +284,7 @@ function testIndexes() {
   /**
    * Test the deletion of a field storage.
    */
-  function testDelete() {
+  public function testDelete() {
     // TODO: Also test deletion of the data stored in the field ?
 
     // Create two fields (so we can test that only one is deleted).
@@ -363,7 +363,7 @@ function testDelete() {
     }
   }
 
-  function testUpdateFieldType() {
+  public function testUpdateFieldType() {
     $field_storage = FieldStorageConfig::create([
       'field_name' => 'field_type',
       'entity_type' => 'entity_test',
@@ -384,7 +384,7 @@ function testUpdateFieldType() {
   /**
    * Test updating a field storage.
    */
-  function testUpdate() {
+  public function testUpdate() {
     // Create a field with a defined cardinality, so that we can ensure it's
     // respected. Since cardinality enforcement is consistent across database
     // systems, it makes a good test case.
@@ -426,7 +426,7 @@ function testUpdate() {
   /**
    * Test field type modules forbidding an update.
    */
-  function testUpdateForbid() {
+  public function testUpdateForbid() {
     $field_storage = FieldStorageConfig::create([
       'field_name' => 'forbidden',
       'entity_type' => 'entity_test',
diff --git a/core/modules/field/tests/src/Kernel/FieldTypePluginManagerTest.php b/core/modules/field/tests/src/Kernel/FieldTypePluginManagerTest.php
index fe46a057f9f96cddc8101548fdc37bc8dc31aca2..32b2964809f5461e5e7eb30b00cf93623436e813 100644
--- a/core/modules/field/tests/src/Kernel/FieldTypePluginManagerTest.php
+++ b/core/modules/field/tests/src/Kernel/FieldTypePluginManagerTest.php
@@ -17,7 +17,7 @@ class FieldTypePluginManagerTest extends FieldKernelTestBase {
   /**
    * Tests the default settings convenience methods.
    */
-  function testDefaultSettings() {
+  public function testDefaultSettings() {
     $field_type_manager = \Drupal::service('plugin.manager.field.field_type');
     foreach (['test_field', 'shape', 'hidden_test_field'] as $type) {
       $definition = $field_type_manager->getDefinition($type);
diff --git a/core/modules/field/tests/src/Kernel/FieldValidationTest.php b/core/modules/field/tests/src/Kernel/FieldValidationTest.php
index 5eac7734b9382fc5ab5c4cfd0cb360cadf7f790b..92d33972f65d632f663d41882e50840805d084c3 100644
--- a/core/modules/field/tests/src/Kernel/FieldValidationTest.php
+++ b/core/modules/field/tests/src/Kernel/FieldValidationTest.php
@@ -42,7 +42,7 @@ protected function setUp() {
   /**
    * Tests that the number of values is validated against the field cardinality.
    */
-  function testCardinalityConstraint() {
+  public function testCardinalityConstraint() {
     $cardinality = $this->fieldTestData->field_storage->getCardinality();
     $entity = $this->entity;
 
@@ -62,7 +62,7 @@ function testCardinalityConstraint() {
   /**
    * Tests that constraints defined by the field type are validated.
    */
-  function testFieldConstraints() {
+  public function testFieldConstraints() {
     $cardinality = $this->fieldTestData->field_storage->getCardinality();
     $entity = $this->entity;
 
diff --git a/core/modules/field/tests/src/Kernel/TranslationTest.php b/core/modules/field/tests/src/Kernel/TranslationTest.php
index f1fffe60f7addd263200c1a37647b4305ff1f149..124fd94da0c5ff6880973cfcd82159e71a0df8b0 100644
--- a/core/modules/field/tests/src/Kernel/TranslationTest.php
+++ b/core/modules/field/tests/src/Kernel/TranslationTest.php
@@ -106,7 +106,7 @@ protected function setUp() {
   /**
    * Test translatable fields storage/retrieval.
    */
-  function testTranslatableFieldSaveLoad() {
+  public function testTranslatableFieldSaveLoad() {
     // Enable field translations for nodes.
     field_test_entity_info_translatable('node', TRUE);
     $entity_type = \Drupal::entityManager()->getDefinition('node');
diff --git a/core/modules/field/tests/src/Kernel/WidgetPluginManagerTest.php b/core/modules/field/tests/src/Kernel/WidgetPluginManagerTest.php
index 47edb9f77467862cdc03e83bcf68d4622d9926ea..de6f39bd2e8230a1c9791e9f0398b9b4b86c32d0 100644
--- a/core/modules/field/tests/src/Kernel/WidgetPluginManagerTest.php
+++ b/core/modules/field/tests/src/Kernel/WidgetPluginManagerTest.php
@@ -13,7 +13,7 @@ class WidgetPluginManagerTest extends FieldKernelTestBase {
   /**
    * Tests that the widget definitions alter hook works.
    */
-  function testWidgetDefinitionAlter() {
+  public function testWidgetDefinitionAlter() {
     $widget_definition = \Drupal::service('plugin.manager.field.widget')->getDefinition('test_field_widget_multiple');
 
     // Test if hook_field_widget_info_alter is being called.
diff --git a/core/modules/field_ui/src/Tests/FieldUIDeleteTest.php b/core/modules/field_ui/src/Tests/FieldUIDeleteTest.php
index 542a99cfeeea33918dcf9a063398406b55e9250a..270415730466cfedcd469999e11c74b78288d260 100644
--- a/core/modules/field_ui/src/Tests/FieldUIDeleteTest.php
+++ b/core/modules/field_ui/src/Tests/FieldUIDeleteTest.php
@@ -48,7 +48,7 @@ protected function setUp() {
   /**
    * Tests that deletion removes field storages and fields as expected.
    */
-  function testDeleteField() {
+  public function testDeleteField() {
     $field_label = $this->randomMachineName();
     $field_name_input = 'test';
     $field_name = 'field_test';
diff --git a/core/modules/field_ui/src/Tests/ManageDisplayTest.php b/core/modules/field_ui/src/Tests/ManageDisplayTest.php
index 3f6c480cc794d7885828aa9a6cd6967cf50672f0..727547817d16cd27f64b5db2eeface110b8fb420 100644
--- a/core/modules/field_ui/src/Tests/ManageDisplayTest.php
+++ b/core/modules/field_ui/src/Tests/ManageDisplayTest.php
@@ -60,7 +60,7 @@ protected function setUp() {
   /**
    * Tests formatter settings.
    */
-  function testFormatterUI() {
+  public function testFormatterUI() {
     $manage_fields = 'admin/structure/types/manage/' . $this->type;
     $manage_display = $manage_fields . '/display';
 
@@ -327,7 +327,7 @@ public function testWidgetUI() {
   /**
    * Tests switching view modes to use custom or 'default' settings'.
    */
-  function testViewModeCustom() {
+  public function testViewModeCustom() {
     // Create a field, and a node with some data for the field.
     $this->fieldUIAddNewField('admin/structure/types/manage/' . $this->type, 'test', 'Test field');
     \Drupal::entityManager()->clearCachedFieldDefinitions();
@@ -410,7 +410,7 @@ public function testViewModeLocalTasks() {
   /**
    * Tests that fields with no explicit display settings do not break.
    */
-  function testNonInitializedFields() {
+  public function testNonInitializedFields() {
     // Create a test field.
     $this->fieldUIAddNewField('admin/structure/types/manage/' . $this->type, 'test', 'Test');
 
@@ -423,7 +423,7 @@ function testNonInitializedFields() {
   /**
    * Tests hiding the view modes fieldset when there's only one available.
    */
-  function testSingleViewMode() {
+  public function testSingleViewMode() {
     $this->drupalGet('admin/structure/taxonomy/manage/' . $this->vocabulary . '/display');
     $this->assertNoText('Use custom display settings for the following view modes', 'Custom display settings fieldset found.');
 
@@ -434,7 +434,7 @@ function testSingleViewMode() {
   /**
    * Tests that a message is shown when there are no fields.
    */
-  function testNoFieldsDisplayOverview() {
+  public function testNoFieldsDisplayOverview() {
     // Create a fresh content type without any fields.
     NodeType::create([
       'type' => 'no_fields',
@@ -460,7 +460,7 @@ function testNoFieldsDisplayOverview() {
    * @return
    *   TRUE on pass, FALSE on fail.
    */
-  function assertNodeViewText(EntityInterface $node, $view_mode, $text, $message) {
+  public function assertNodeViewText(EntityInterface $node, $view_mode, $text, $message) {
     return $this->assertNodeViewTextHelper($node, $view_mode, $text, $message, FALSE);
   }
 
@@ -478,7 +478,7 @@ function assertNodeViewText(EntityInterface $node, $view_mode, $text, $message)
    * @return
    *   TRUE on pass, FALSE on fail.
    */
-  function assertNodeViewNoText(EntityInterface $node, $view_mode, $text, $message) {
+  public function assertNodeViewNoText(EntityInterface $node, $view_mode, $text, $message) {
     return $this->assertNodeViewTextHelper($node, $view_mode, $text, $message, TRUE);
   }
 
@@ -502,7 +502,7 @@ function assertNodeViewNoText(EntityInterface $node, $view_mode, $text, $message
    * @return
    *   TRUE on pass, FALSE on fail.
    */
-  function assertNodeViewTextHelper(EntityInterface $node, $view_mode, $text, $message, $not_exists) {
+  public function assertNodeViewTextHelper(EntityInterface $node, $view_mode, $text, $message, $not_exists) {
     // Make sure caches on the tester side are refreshed after changes
     // submitted on the tested side.
     \Drupal::entityManager()->clearCachedFieldDefinitions();
diff --git a/core/modules/field_ui/src/Tests/ManageFieldsTest.php b/core/modules/field_ui/src/Tests/ManageFieldsTest.php
index 6be13664e316b7efe5de651731b822b3596fc5d4..d08ab03ba4cde7d175c79da5e7942c221a962d55 100644
--- a/core/modules/field_ui/src/Tests/ManageFieldsTest.php
+++ b/core/modules/field_ui/src/Tests/ManageFieldsTest.php
@@ -111,7 +111,7 @@ protected function setUp() {
    * In order to act on the same fields, and not create the fields over and over
    * again the following tests create, update and delete the same fields.
    */
-  function testCRUDFields() {
+  public function testCRUDFields() {
     $this->manageFieldsPage();
     $this->createField();
     $this->updateField();
@@ -128,7 +128,7 @@ function testCRUDFields() {
    * @param string $type
    *   (optional) The name of a content type.
    */
-  function manageFieldsPage($type = '') {
+  public function manageFieldsPage($type = '') {
     $type = empty($type) ? $this->contentType : $type;
     $this->drupalGet('admin/structure/types/manage/' . $type . '/fields');
     // Check all table columns.
@@ -178,7 +178,7 @@ function manageFieldsPage($type = '') {
    * @todo Assert properties can bet set in the form and read back in
    * $field_storage and $fields.
    */
-  function createField() {
+  public function createField() {
     // Create a test field.
     $this->fieldUIAddNewField('admin/structure/types/manage/' . $this->contentType, $this->fieldNameInput, $this->fieldLabel);
   }
@@ -186,7 +186,7 @@ function createField() {
   /**
    * Tests editing an existing field.
    */
-  function updateField() {
+  public function updateField() {
     $field_id = 'node.' . $this->contentType . '.' . $this->fieldName;
     // Go to the field edit page.
     $this->drupalGet('admin/structure/types/manage/' . $this->contentType . '/fields/' . $field_id . '/storage');
@@ -217,7 +217,7 @@ function updateField() {
   /**
    * Tests adding an existing field in another content type.
    */
-  function addExistingField() {
+  public function addExistingField() {
     // Check "Re-use existing field" appears.
     $this->drupalGet('admin/structure/types/manage/page/fields/add-field');
     $this->assertRaw(t('Re-use an existing field'), '"Re-use existing field" was found.');
@@ -238,7 +238,7 @@ function addExistingField() {
    * We do not test if the number can be submitted with anything else than a
    * numeric value. That is tested already in FormTest::testNumber().
    */
-  function cardinalitySettings() {
+  public function cardinalitySettings() {
     $field_edit_path = 'admin/structure/types/manage/article/fields/node.article.body/storage';
 
     // Assert the cardinality other field cannot be empty when cardinality is
@@ -364,7 +364,7 @@ protected function addPersistentFieldStorage() {
    * @param $entity_type
    *   The entity type for the field.
    */
-  function assertFieldSettings($bundle, $field_name, $string = 'dummy test string', $entity_type = 'node') {
+  public function assertFieldSettings($bundle, $field_name, $string = 'dummy test string', $entity_type = 'node') {
     // Assert field storage settings.
     $field_storage = FieldStorageConfig::loadByName($entity_type, $field_name);
     $this->assertTrue($field_storage->getSetting('test_field_storage_setting') == $string, 'Field storage settings were found.');
@@ -377,7 +377,7 @@ function assertFieldSettings($bundle, $field_name, $string = 'dummy test string'
   /**
    * Tests that the 'field_prefix' setting works on Field UI.
    */
-  function testFieldPrefix() {
+  public function testFieldPrefix() {
     // Change default field prefix.
     $field_prefix = strtolower($this->randomMachineName(10));
     $this->config('field_ui.settings')->set('field_prefix', $field_prefix)->save();
@@ -403,7 +403,7 @@ function testFieldPrefix() {
   /**
    * Tests that default value is correctly validated and saved.
    */
-  function testDefaultValue() {
+  public function testDefaultValue() {
     // Create a test field storage and field.
     $field_name = 'test';
     FieldStorageConfig::create([
@@ -479,7 +479,7 @@ function testDefaultValue() {
   /**
    * Tests that deletion removes field storages and fields as expected.
    */
-  function testDeleteField() {
+  public function testDeleteField() {
     // Create a new field.
     $bundle_path1 = 'admin/structure/types/manage/' . $this->contentType;
     $this->fieldUIAddNewField($bundle_path1, $this->fieldNameInput, $this->fieldLabel);
@@ -513,7 +513,7 @@ function testDeleteField() {
   /**
    * Tests that Field UI respects disallowed field names.
    */
-  function testDisallowedFieldNames() {
+  public function testDisallowedFieldNames() {
     // Reset the field prefix so we can test properly.
     $this->config('field_ui.settings')->set('field_prefix', '')->save();
 
@@ -539,7 +539,7 @@ function testDisallowedFieldNames() {
   /**
    * Tests that Field UI respects locked fields.
    */
-  function testLockedField() {
+  public function testLockedField() {
     // Create a locked field and attach it to a bundle. We need to do this
     // programmatically as there's no way to create a locked field through UI.
     $field_name = strtolower($this->randomMachineName(8));
@@ -576,7 +576,7 @@ function testLockedField() {
   /**
    * Tests that Field UI respects the 'no_ui' flag in the field type definition.
    */
-  function testHiddenFields() {
+  public function testHiddenFields() {
     // Check that the field type is not available in the 'add new field' row.
     $this->drupalGet('admin/structure/types/manage/' . $this->contentType . '/fields/add-field');
     $this->assertFalse($this->xpath('//select[@id="edit-new-storage-type"]//option[@value="hidden_test_field"]'), "The 'add new field' select respects field types 'no_ui' property.");
@@ -627,7 +627,7 @@ function testHiddenFields() {
   /**
    * Tests that a duplicate field name is caught by validation.
    */
-  function testDuplicateFieldName() {
+  public function testDuplicateFieldName() {
     // field_tags already exists, so we're expecting an error when trying to
     // create a new field with the same name.
     $edit = [
@@ -659,7 +659,7 @@ public function testExternalDestinations() {
   /**
    * Tests that deletion removes field storages and fields as expected for a term.
    */
-  function testDeleteTaxonomyField() {
+  public function testDeleteTaxonomyField() {
     // Create a new field.
     $bundle_path = 'admin/structure/taxonomy/manage/tags/overview';
 
@@ -677,7 +677,7 @@ function testDeleteTaxonomyField() {
   /**
    * Tests that help descriptions render valid HTML.
    */
-  function testHelpDescriptions() {
+  public function testHelpDescriptions() {
     // Create an image field
     FieldStorageConfig::create([
       'field_name' => 'field_image',
@@ -717,7 +717,7 @@ function testHelpDescriptions() {
   /**
    * Tests that the field list administration page operates correctly.
    */
-  function fieldListAdminPage() {
+  public function fieldListAdminPage() {
     $this->drupalGet('admin/reports/fields');
     $this->assertText($this->fieldName, 'Field name is displayed in field list.');
     $this->assertTrue($this->assertLinkByHref('admin/structure/types/manage/' . $this->contentType . '/fields'), 'Link to content type using field is displayed in field list.');
diff --git a/core/modules/field_ui/tests/src/Functional/FieldUIIndentationTest.php b/core/modules/field_ui/tests/src/Functional/FieldUIIndentationTest.php
index 3eb90d04d5f831c481922fd7ecb8260ffacc0dba..1f66c9a77276398b39773d13c6026529ba49164f 100644
--- a/core/modules/field_ui/tests/src/Functional/FieldUIIndentationTest.php
+++ b/core/modules/field_ui/tests/src/Functional/FieldUIIndentationTest.php
@@ -33,7 +33,7 @@ protected function setUp() {
 
   }
 
-  function testIndentation() {
+  public function testIndentation() {
     $this->drupalGet('admin/structure/types/manage/page/display');
     $this->assertRaw('js-indentation indentation');
   }
diff --git a/core/modules/file/src/Tests/DownloadTest.php b/core/modules/file/src/Tests/DownloadTest.php
index bb871d4fb1c469a486fe74f03d16c079d140c599..c5189fac206a068410b4ea2795102e8073b9161b 100644
--- a/core/modules/file/src/Tests/DownloadTest.php
+++ b/core/modules/file/src/Tests/DownloadTest.php
@@ -17,7 +17,7 @@ protected function setUp() {
   /**
    * Test the public file transfer system.
    */
-  function testPublicFileTransfer() {
+  public function testPublicFileTransfer() {
     // Test generating a URL to a created file.
     $file = $this->createFile();
     $url = file_create_url($file->getFileUri());
@@ -86,7 +86,7 @@ protected function doPrivateFileTransferTest() {
   /**
    * Test file_create_url().
    */
-  function testFileCreateUrl() {
+  public function testFileCreateUrl() {
 
     // Tilde (~) is excluded from this test because it is encoded by
     // rawurlencode() in PHP 5.2 but not in PHP 5.3, as per RFC 3986.
diff --git a/core/modules/file/src/Tests/FileFieldDisplayTest.php b/core/modules/file/src/Tests/FileFieldDisplayTest.php
index f78cd7d6960a0d5f4be7e2fe2aa57630d440e803..1b7e534211d19d207b812b0265311c575db37e52 100644
--- a/core/modules/file/src/Tests/FileFieldDisplayTest.php
+++ b/core/modules/file/src/Tests/FileFieldDisplayTest.php
@@ -15,7 +15,7 @@ class FileFieldDisplayTest extends FileFieldTestBase {
   /**
    * Tests normal formatter display on node display.
    */
-  function testNodeDisplay() {
+  public function testNodeDisplay() {
     $field_name = strtolower($this->randomMachineName());
     $type_name = 'article';
     $field_storage_settings = [
@@ -110,7 +110,7 @@ function testNodeDisplay() {
   /**
    * Tests default display of File Field.
    */
-  function testDefaultFileFieldDisplay() {
+  public function testDefaultFileFieldDisplay() {
     $field_name = strtolower($this->randomMachineName());
     $type_name = 'article';
     $field_storage_settings = [
@@ -137,7 +137,7 @@ function testDefaultFileFieldDisplay() {
   /**
    * Tests description toggle for field instance configuration.
    */
-  function testDescToggle() {
+  public function testDescToggle() {
     $type_name = 'test';
     $field_type = 'file';
     $field_name = strtolower($this->randomMachineName());
diff --git a/core/modules/file/src/Tests/FileFieldPathTest.php b/core/modules/file/src/Tests/FileFieldPathTest.php
index f2498b52ff2ea8ad1fbc1a34d7c7410cddf76542..300b92c3ca26d46a7d4dd50bb723292875e6625c 100644
--- a/core/modules/file/src/Tests/FileFieldPathTest.php
+++ b/core/modules/file/src/Tests/FileFieldPathTest.php
@@ -13,7 +13,7 @@ class FileFieldPathTest extends FileFieldTestBase {
   /**
    * Tests the normal formatter display on node display.
    */
-  function testUploadPath() {
+  public function testUploadPath() {
     /** @var \Drupal\node\NodeStorageInterface $node_storage */
     $node_storage = $this->container->get('entity.manager')->getStorage('node');
     $field_name = strtolower($this->randomMachineName());
@@ -79,7 +79,7 @@ function testUploadPath() {
    * @param string $message
    *   The message to display with this assertion.
    */
-  function assertPathMatch($expected_path, $actual_path, $message) {
+  public function assertPathMatch($expected_path, $actual_path, $message) {
     // Strip off the extension of the expected path to allow for _0, _1, etc.
     // suffixes when the file hits a duplicate name.
     $pos = strrpos($expected_path, '.');
diff --git a/core/modules/file/src/Tests/FileFieldRSSContentTest.php b/core/modules/file/src/Tests/FileFieldRSSContentTest.php
index e16e82e6918b9b47c183ccc988b506162512d8ec..af2b5f2b3e52385a1ce871e179229545e019513d 100644
--- a/core/modules/file/src/Tests/FileFieldRSSContentTest.php
+++ b/core/modules/file/src/Tests/FileFieldRSSContentTest.php
@@ -21,7 +21,7 @@ class FileFieldRSSContentTest extends FileFieldTestBase {
   /**
    * Tests RSS enclosure formatter display for RSS feeds.
    */
-  function testFileFieldRSSContent() {
+  public function testFileFieldRSSContent() {
     $node_storage = $this->container->get('entity.manager')->getStorage('node');
     $field_name = strtolower($this->randomMachineName());
     $type_name = 'article';
diff --git a/core/modules/file/src/Tests/FileFieldRevisionTest.php b/core/modules/file/src/Tests/FileFieldRevisionTest.php
index ef7904182f155e6b7f1da365374d310e843104c9..7de496ff8a5fb28d64863e382261d89fa94a765e 100644
--- a/core/modules/file/src/Tests/FileFieldRevisionTest.php
+++ b/core/modules/file/src/Tests/FileFieldRevisionTest.php
@@ -21,7 +21,7 @@ class FileFieldRevisionTest extends FileFieldTestBase {
    *  - When the last revision that uses a file is deleted, the original file
    *    should be deleted also.
    */
-  function testRevisions() {
+  public function testRevisions() {
     $node_storage = $this->container->get('entity.manager')->getStorage('node');
     $type_name = 'article';
     $field_name = strtolower($this->randomMachineName());
diff --git a/core/modules/file/src/Tests/FileFieldTestBase.php b/core/modules/file/src/Tests/FileFieldTestBase.php
index a9c96f3a72a22a79ab7d9119603ab5a6fd262e37..73cc96ad504d9333bf9eb5bc772dbd1d2d4ddf28 100644
--- a/core/modules/file/src/Tests/FileFieldTestBase.php
+++ b/core/modules/file/src/Tests/FileFieldTestBase.php
@@ -42,7 +42,7 @@ protected function setUp() {
    *
    * @return \Drupal\file\FileInterface
    */
-  function getTestFile($type_name, $size = NULL) {
+  public function getTestFile($type_name, $size = NULL) {
     // Get a file to upload.
     $file = current($this->drupalGetTestFiles($type_name, $size));
 
@@ -56,7 +56,7 @@ function getTestFile($type_name, $size = NULL) {
   /**
    * Retrieves the fid of the last inserted file.
    */
-  function getLastFileId() {
+  public function getLastFileId() {
     return (int) db_query('SELECT MAX(fid) FROM {file_managed}')->fetchField();
   }
 
@@ -76,7 +76,7 @@ function getLastFileId() {
    * @param array $widget_settings
    *   A list of widget settings that will be added to the widget defaults.
    */
-  function createFileField($name, $entity_type, $bundle, $storage_settings = [], $field_settings = [], $widget_settings = []) {
+  public function createFileField($name, $entity_type, $bundle, $storage_settings = [], $field_settings = [], $widget_settings = []) {
     $field_storage = FieldStorageConfig::create([
       'entity_type' => $entity_type,
       'field_name' => $name,
@@ -104,7 +104,7 @@ function createFileField($name, $entity_type, $bundle, $storage_settings = [], $
    * @param array $widget_settings
    *   A list of widget settings that will be added to the widget defaults.
    */
-  function attachFileField($name, $entity_type, $bundle, $field_settings = [], $widget_settings = []) {
+  public function attachFileField($name, $entity_type, $bundle, $field_settings = [], $widget_settings = []) {
     $field = [
       'field_name' => $name,
       'label' => $name,
@@ -133,7 +133,7 @@ function attachFileField($name, $entity_type, $bundle, $field_settings = [], $wi
   /**
    * Updates an existing file field with new settings.
    */
-  function updateFileField($name, $type_name, $field_settings = [], $widget_settings = []) {
+  public function updateFileField($name, $type_name, $field_settings = [], $widget_settings = []) {
     $field = FieldConfig::loadByName('node', $type_name, $name);
     $field->setSettings(array_merge($field->getSettings(), $field_settings));
     $field->save();
@@ -163,7 +163,7 @@ function updateFileField($name, $type_name, $field_settings = [], $widget_settin
    * @return int
    *   The node id.
    */
-  function uploadNodeFile(FileInterface $file, $field_name, $nid_or_type, $new_revision = TRUE, array $extras = []) {
+  public function uploadNodeFile(FileInterface $file, $field_name, $nid_or_type, $new_revision = TRUE, array $extras = []) {
     return $this->uploadNodeFiles([$file], $field_name, $nid_or_type, $new_revision, $extras);
   }
 
@@ -185,7 +185,7 @@ function uploadNodeFile(FileInterface $file, $field_name, $nid_or_type, $new_rev
    * @return int
    *   The node id.
    */
-  function uploadNodeFiles(array $files, $field_name, $nid_or_type, $new_revision = TRUE, array $extras = []) {
+  public function uploadNodeFiles(array $files, $field_name, $nid_or_type, $new_revision = TRUE, array $extras = []) {
     $edit = [
       'title[0][value]' => $this->randomMachineName(),
       'revision' => (string) (int) $new_revision,
@@ -237,7 +237,7 @@ function uploadNodeFiles(array $files, $field_name, $nid_or_type, $new_revision
    *
    * Note that if replacing a file, it must first be removed then added again.
    */
-  function removeNodeFile($nid, $new_revision = TRUE) {
+  public function removeNodeFile($nid, $new_revision = TRUE) {
     $edit = [
       'revision' => (string) (int) $new_revision,
     ];
@@ -249,7 +249,7 @@ function removeNodeFile($nid, $new_revision = TRUE) {
   /**
    * Replaces a file within a node.
    */
-  function replaceNodeFile($file, $field_name, $nid, $new_revision = TRUE) {
+  public function replaceNodeFile($file, $field_name, $nid, $new_revision = TRUE) {
     $edit = [
       'files[' . $field_name . '_0]' => drupal_realpath($file->getFileUri()),
       'revision' => (string) (int) $new_revision,
@@ -262,7 +262,7 @@ function replaceNodeFile($file, $field_name, $nid, $new_revision = TRUE) {
   /**
    * Asserts that a file exists physically on disk.
    */
-  function assertFileExists($file, $message = NULL) {
+  public function assertFileExists($file, $message = NULL) {
     $message = isset($message) ? $message : format_string('File %file exists on the disk.', ['%file' => $file->getFileUri()]);
     $this->assertTrue(is_file($file->getFileUri()), $message);
   }
@@ -270,7 +270,7 @@ function assertFileExists($file, $message = NULL) {
   /**
    * Asserts that a file exists in the database.
    */
-  function assertFileEntryExists($file, $message = NULL) {
+  public function assertFileEntryExists($file, $message = NULL) {
     $this->container->get('entity.manager')->getStorage('file')->resetCache();
     $db_file = File::load($file->id());
     $message = isset($message) ? $message : format_string('File %file exists in database at the correct path.', ['%file' => $file->getFileUri()]);
@@ -280,7 +280,7 @@ function assertFileEntryExists($file, $message = NULL) {
   /**
    * Asserts that a file does not exist on disk.
    */
-  function assertFileNotExists($file, $message = NULL) {
+  public function assertFileNotExists($file, $message = NULL) {
     $message = isset($message) ? $message : format_string('File %file exists on the disk.', ['%file' => $file->getFileUri()]);
     $this->assertFalse(is_file($file->getFileUri()), $message);
   }
@@ -288,7 +288,7 @@ function assertFileNotExists($file, $message = NULL) {
   /**
    * Asserts that a file does not exist in the database.
    */
-  function assertFileEntryNotExists($file, $message) {
+  public function assertFileEntryNotExists($file, $message) {
     $this->container->get('entity.manager')->getStorage('file')->resetCache();
     $message = isset($message) ? $message : format_string('File %file exists in database at the correct path.', ['%file' => $file->getFileUri()]);
     $this->assertFalse(File::load($file->id()), $message);
@@ -297,7 +297,7 @@ function assertFileEntryNotExists($file, $message) {
   /**
    * Asserts that a file's status is set to permanent in the database.
    */
-  function assertFileIsPermanent(FileInterface $file, $message = NULL) {
+  public function assertFileIsPermanent(FileInterface $file, $message = NULL) {
     $message = isset($message) ? $message : format_string('File %file is permanent.', ['%file' => $file->getFileUri()]);
     $this->assertTrue($file->isPermanent(), $message);
   }
diff --git a/core/modules/file/src/Tests/FileFieldValidateTest.php b/core/modules/file/src/Tests/FileFieldValidateTest.php
index 0f8b1f1de7fd336c31db5ba62d76e8c480a31ffa..5ddcdde3f8974edd7cc5139f3362a63825db1e8e 100644
--- a/core/modules/file/src/Tests/FileFieldValidateTest.php
+++ b/core/modules/file/src/Tests/FileFieldValidateTest.php
@@ -17,7 +17,7 @@ class FileFieldValidateTest extends FileFieldTestBase {
   /**
    * Tests the required property on file fields.
    */
-  function testRequired() {
+  public function testRequired() {
     $node_storage = $this->container->get('entity.manager')->getStorage('node');
     $type_name = 'article';
     $field_name = strtolower($this->randomMachineName());
@@ -65,7 +65,7 @@ function testRequired() {
   /**
    * Tests the max file size validator.
    */
-  function testFileMaxSize() {
+  public function testFileMaxSize() {
     $node_storage = $this->container->get('entity.manager')->getStorage('node');
     $type_name = 'article';
     $field_name = strtolower($this->randomMachineName());
@@ -114,7 +114,7 @@ function testFileMaxSize() {
   /**
    * Tests file extension checking.
    */
-  function testFileExtension() {
+  public function testFileExtension() {
     $node_storage = $this->container->get('entity.manager')->getStorage('node');
     $type_name = 'article';
     $field_name = strtolower($this->randomMachineName());
diff --git a/core/modules/file/src/Tests/FileFieldWidgetTest.php b/core/modules/file/src/Tests/FileFieldWidgetTest.php
index f132d70d5f713c0f20ca6dceca30c57dd3c5116b..ddfd8f4e79b1c355b5c5cc758f230ef5ed0b424f 100644
--- a/core/modules/file/src/Tests/FileFieldWidgetTest.php
+++ b/core/modules/file/src/Tests/FileFieldWidgetTest.php
@@ -73,7 +73,7 @@ protected function createTemporaryFile($data, UserInterface $user = NULL) {
   /**
    * Tests upload and remove buttons for a single-valued File field.
    */
-  function testSingleValuedWidget() {
+  public function testSingleValuedWidget() {
     $node_storage = $this->container->get('entity.manager')->getStorage('node');
     $type_name = 'article';
     $field_name = strtolower($this->randomMachineName());
@@ -131,7 +131,7 @@ function testSingleValuedWidget() {
   /**
    * Tests upload and remove buttons for multiple multi-valued File fields.
    */
-  function testMultiValuedWidget() {
+  public function testMultiValuedWidget() {
     $node_storage = $this->container->get('entity.manager')->getStorage('node');
     $type_name = 'article';
     // Use explicit names instead of random names for those fields, because of a
@@ -301,7 +301,7 @@ function testMultiValuedWidget() {
   /**
    * Tests a file field with a "Private files" upload destination setting.
    */
-  function testPrivateFileSetting() {
+  public function testPrivateFileSetting() {
     $node_storage = $this->container->get('entity.manager')->getStorage('node');
     // Grant the admin user required permissions.
     user_role_grant_permissions($this->adminUser->roles[0]->target_id, ['administer node fields']);
@@ -341,7 +341,7 @@ function testPrivateFileSetting() {
   /**
    * Tests that download restrictions on private files work on comments.
    */
-  function testPrivateFileComment() {
+  public function testPrivateFileComment() {
     $user = $this->drupalCreateUser(['access comments']);
 
     // Grant the admin user required comment permissions.
@@ -413,7 +413,7 @@ function testPrivateFileComment() {
   /**
    * Tests validation with the Upload button.
    */
-  function testWidgetValidation() {
+  public function testWidgetValidation() {
     $type_name = 'article';
     $field_name = strtolower($this->randomMachineName());
     $this->createFileField($field_name, 'node', $type_name);
diff --git a/core/modules/file/src/Tests/FileListingTest.php b/core/modules/file/src/Tests/FileListingTest.php
index e163529ed261eccfbe4b8a6d2b5fafcb9a1a7e82..e348949a737dc37ee05d93aed223f8567965d85e 100644
--- a/core/modules/file/src/Tests/FileListingTest.php
+++ b/core/modules/file/src/Tests/FileListingTest.php
@@ -59,7 +59,7 @@ protected function sumUsages($usage) {
   /**
    * Tests file overview with different user permissions.
    */
-  function testFileListingPages() {
+  public function testFileListingPages() {
     $file_usage = $this->container->get('file.usage');
     // Users without sufficient permissions should not see file listing.
     $this->drupalLogin($this->baseUser);
@@ -148,7 +148,7 @@ function testFileListingPages() {
   /**
    * Tests file listing usage page for entities with no canonical link template.
    */
-  function testFileListingUsageNoLink() {
+  public function testFileListingUsageNoLink() {
     // Login with user with right permissions and test listing.
     $this->drupalLogin($this->adminUser);
 
diff --git a/core/modules/file/src/Tests/FileManagedFileElementTest.php b/core/modules/file/src/Tests/FileManagedFileElementTest.php
index 994803e0be6d06af96fa293337c9c5b072f2cb99..8abff25e45ff09347c2fabcfe439f3ed8711a52e 100644
--- a/core/modules/file/src/Tests/FileManagedFileElementTest.php
+++ b/core/modules/file/src/Tests/FileManagedFileElementTest.php
@@ -13,7 +13,7 @@ class FileManagedFileElementTest extends FileFieldTestBase {
   /**
    * Tests the managed_file element type.
    */
-  function testManagedFile() {
+  public function testManagedFile() {
     // Check that $element['#size'] is passed to the child upload element.
     $this->drupalGet('file/test');
     $this->assertFieldByXpath('//input[@name="files[nested_file]" and @size="13"]', NULL, 'The custom #size attribute is passed to the child upload element.');
diff --git a/core/modules/file/src/Tests/FileManagedTestBase.php b/core/modules/file/src/Tests/FileManagedTestBase.php
index 8bd85bdc7ab6786b94137ac5846c88f92abb7e4d..879e1c4e940c9ac2a0e709104ca230341be788df 100644
--- a/core/modules/file/src/Tests/FileManagedTestBase.php
+++ b/core/modules/file/src/Tests/FileManagedTestBase.php
@@ -36,7 +36,7 @@ protected function setUp() {
    *   An array of strings containing with the hook name; for example, 'load',
    *   'save', 'insert', etc.
    */
-  function assertFileHooksCalled($expected) {
+  public function assertFileHooksCalled($expected) {
     \Drupal::state()->resetCache();
 
     // Determine which hooks were called.
@@ -71,7 +71,7 @@ function assertFileHooksCalled($expected) {
    * @param string|null $message
    *   Optional translated string message.
    */
-  function assertFileHookCalled($hook, $expected_count = 1, $message = NULL) {
+  public function assertFileHookCalled($hook, $expected_count = 1, $message = NULL) {
     $actual_count = count(file_test_get_calls($hook));
 
     if (!isset($message)) {
@@ -96,7 +96,7 @@ function assertFileHookCalled($hook, $expected_count = 1, $message = NULL) {
    * @param \Drupal\file\FileInterface $after
    *   File object to compare.
    */
-  function assertFileUnchanged(FileInterface $before, FileInterface $after) {
+  public function assertFileUnchanged(FileInterface $before, FileInterface $after) {
     $this->assertEqual($before->id(), $after->id(), t('File id is the same: %file1 == %file2.', ['%file1' => $before->id(), '%file2' => $after->id()]), 'File unchanged');
     $this->assertEqual($before->getOwner()->id(), $after->getOwner()->id(), t('File owner is the same: %file1 == %file2.', ['%file1' => $before->getOwner()->id(), '%file2' => $after->getOwner()->id()]), 'File unchanged');
     $this->assertEqual($before->getFilename(), $after->getFilename(), t('File name is the same: %file1 == %file2.', ['%file1' => $before->getFilename(), '%file2' => $after->getFilename()]), 'File unchanged');
@@ -114,7 +114,7 @@ function assertFileUnchanged(FileInterface $before, FileInterface $after) {
    * @param \Drupal\file\FileInterface $file2
    *   File object to compare.
    */
-  function assertDifferentFile(FileInterface $file1, FileInterface $file2) {
+  public function assertDifferentFile(FileInterface $file1, FileInterface $file2) {
     $this->assertNotEqual($file1->id(), $file2->id(), t('Files have different ids: %file1 != %file2.', ['%file1' => $file1->id(), '%file2' => $file2->id()]), 'Different file');
     $this->assertNotEqual($file1->getFileUri(), $file2->getFileUri(), t('Files have different paths: %file1 != %file2.', ['%file1' => $file1->getFileUri(), '%file2' => $file2->getFileUri()]), 'Different file');
   }
@@ -127,7 +127,7 @@ function assertDifferentFile(FileInterface $file1, FileInterface $file2) {
    * @param \Drupal\file\FileInterface $file2
    *   File object to compare.
    */
-  function assertSameFile(FileInterface $file1, FileInterface $file2) {
+  public function assertSameFile(FileInterface $file1, FileInterface $file2) {
     $this->assertEqual($file1->id(), $file2->id(), t('Files have the same ids: %file1 == %file2.', ['%file1' => $file1->id(), '%file2-fid' => $file2->id()]), 'Same file');
     $this->assertEqual($file1->getFileUri(), $file2->getFileUri(), t('Files have the same path: %file1 == %file2.', ['%file1' => $file1->getFileUri(), '%file2' => $file2->getFileUri()]), 'Same file');
   }
@@ -148,7 +148,7 @@ function assertSameFile(FileInterface $file1, FileInterface $file2) {
    * @return \Drupal\file\FileInterface
    *   File entity.
    */
-  function createFile($filepath = NULL, $contents = NULL, $scheme = NULL) {
+  public function createFile($filepath = NULL, $contents = NULL, $scheme = NULL) {
     // Don't count hook invocations caused by creating the file.
     \Drupal::state()->set('file_test.count_hook_invocations', FALSE);
     $file = File::create([
@@ -180,7 +180,7 @@ function createFile($filepath = NULL, $contents = NULL, $scheme = NULL) {
    * @return string
    *   File URI.
    */
-  function createUri($filepath = NULL, $contents = NULL, $scheme = NULL) {
+  public function createUri($filepath = NULL, $contents = NULL, $scheme = NULL) {
     if (!isset($filepath)) {
       // Prefix with non-latin characters to ensure that all file-related
       // tests work with international filenames.
diff --git a/core/modules/file/src/Tests/FilePrivateTest.php b/core/modules/file/src/Tests/FilePrivateTest.php
index 9ed4a9e68d5d5dec1bd0e1c2835508d26bb81a71..3c9776fb7dee499c81f89d4012281e2397072919 100644
--- a/core/modules/file/src/Tests/FilePrivateTest.php
+++ b/core/modules/file/src/Tests/FilePrivateTest.php
@@ -31,7 +31,7 @@ protected function setUp() {
   /**
    * Tests file access for file uploaded to a private node.
    */
-  function testPrivateFile() {
+  public function testPrivateFile() {
     $node_storage = $this->container->get('entity.manager')->getStorage('node');
     $type_name = 'article';
     $field_name = strtolower($this->randomMachineName());
diff --git a/core/modules/file/src/Tests/FileTokenReplaceTest.php b/core/modules/file/src/Tests/FileTokenReplaceTest.php
index 143ded4b60365cf525cbde5c241af2e552f2fd5b..5bfa07b9ab295fd5925a6000294f06c054be66c5 100644
--- a/core/modules/file/src/Tests/FileTokenReplaceTest.php
+++ b/core/modules/file/src/Tests/FileTokenReplaceTest.php
@@ -16,7 +16,7 @@ class FileTokenReplaceTest extends FileFieldTestBase {
   /**
    * Creates a file, then tests the tokens generated from it.
    */
-  function testFileTokenReplacement() {
+  public function testFileTokenReplacement() {
     $node_storage = $this->container->get('entity.manager')->getStorage('node');
     $token_service = \Drupal::token();
     $language_interface = \Drupal::languageManager()->getCurrentLanguage();
diff --git a/core/modules/file/src/Tests/SaveUploadTest.php b/core/modules/file/src/Tests/SaveUploadTest.php
index 14071737f0b163aee954103d84ab97950c48b51f..a9f69c2fb71cc4a5dbea2d3771aa7fe2dd4b222d 100644
--- a/core/modules/file/src/Tests/SaveUploadTest.php
+++ b/core/modules/file/src/Tests/SaveUploadTest.php
@@ -75,7 +75,7 @@ protected function setUp() {
   /**
    * Test the file_save_upload() function.
    */
-  function testNormal() {
+  public function testNormal() {
     $max_fid_after = db_query('SELECT MAX(fid) AS fid FROM {file_managed}')->fetchField();
     $this->assertTrue($max_fid_after > $this->maxFidBefore, 'A new file was created.');
     $file1 = File::load($max_fid_after);
@@ -124,7 +124,7 @@ function testNormal() {
   /**
    * Test extension handling.
    */
-  function testHandleExtension() {
+  public function testHandleExtension() {
     // The file being tested is a .gif which is in the default safe list
     // of extensions to allow when the extension validator isn't used. This is
     // implicitly tested at the testNormal() test. Here we tell
@@ -185,7 +185,7 @@ function testHandleExtension() {
   /**
    * Test dangerous file handling.
    */
-  function testHandleDangerousFile() {
+  public function testHandleDangerousFile() {
     $config = $this->config('system.file');
     // Allow the .php extension and make sure it gets renamed to .txt for
     // safety. Also check to make sure its MIME type was changed.
@@ -228,7 +228,7 @@ function testHandleDangerousFile() {
   /**
    * Test file munge handling.
    */
-  function testHandleFileMunge() {
+  public function testHandleFileMunge() {
     // Ensure insecure uploads are disabled for this test.
     $this->config('system.file')->set('allow_insecure_uploads', 0)->save();
     $this->image = file_move($this->image, $this->image->getFileUri() . '.foo.' . $this->imageExtension);
@@ -277,7 +277,7 @@ function testHandleFileMunge() {
   /**
    * Test renaming when uploading over a file that already exists.
    */
-  function testExistingRename() {
+  public function testExistingRename() {
     $edit = [
       'file_test_replace' => FILE_EXISTS_RENAME,
       'files[file_test_upload]' => drupal_realpath($this->image->getFileUri())
@@ -293,7 +293,7 @@ function testExistingRename() {
   /**
    * Test replacement when uploading over a file that already exists.
    */
-  function testExistingReplace() {
+  public function testExistingReplace() {
     $edit = [
       'file_test_replace' => FILE_EXISTS_REPLACE,
       'files[file_test_upload]' => drupal_realpath($this->image->getFileUri())
@@ -309,7 +309,7 @@ function testExistingReplace() {
   /**
    * Test for failure when uploading over a file that already exists.
    */
-  function testExistingError() {
+  public function testExistingError() {
     $edit = [
       'file_test_replace' => FILE_EXISTS_ERROR,
       'files[file_test_upload]' => drupal_realpath($this->image->getFileUri())
@@ -325,7 +325,7 @@ function testExistingError() {
   /**
    * Test for no failures when not uploading a file.
    */
-  function testNoUpload() {
+  public function testNoUpload() {
     $this->drupalPostForm('file-test/upload', [], t('Submit'));
     $this->assertNoRaw(t('Epic upload FAIL!'), 'Failure message not found.');
   }
@@ -333,7 +333,7 @@ function testNoUpload() {
   /**
    * Tests for log entry on failing destination.
    */
-  function testDrupalMovingUploadedFileError() {
+  public function testDrupalMovingUploadedFileError() {
     // Create a directory and make it not writable.
     $test_directory = 'test_drupal_move_uploaded_file_fail';
     drupal_mkdir('temporary://' . $test_directory, 0000);
diff --git a/core/modules/file/tests/file_test/src/StreamWrapper/DummyReadOnlyStreamWrapper.php b/core/modules/file/tests/file_test/src/StreamWrapper/DummyReadOnlyStreamWrapper.php
index c0a7c05170cdd595d5b5af0a03ab01b6063396fe..c1c36af4138c46019998a08c184ccbb9e2564b6a 100644
--- a/core/modules/file/tests/file_test/src/StreamWrapper/DummyReadOnlyStreamWrapper.php
+++ b/core/modules/file/tests/file_test/src/StreamWrapper/DummyReadOnlyStreamWrapper.php
@@ -25,7 +25,7 @@ public function getDescription() {
     return t('Dummy wrapper for simpletest (readonly).');
   }
 
-  function getDirectoryPath() {
+  public function getDirectoryPath() {
     return \Drupal::service('site.path') . '/files';
   }
 
@@ -34,7 +34,7 @@ function getDirectoryPath() {
    *
    * Return a dummy path for testing.
    */
-  function getInternalUri() {
+  public function getInternalUri() {
     return '/dummy/example.txt';
   }
 
@@ -43,7 +43,7 @@ function getInternalUri() {
    *
    * Return the HTML URI of a public file.
    */
-  function getExternalUrl() {
+  public function getExternalUrl() {
     return '/dummy/example.txt';
   }
 
diff --git a/core/modules/file/tests/file_test/src/StreamWrapper/DummyRemoteStreamWrapper.php b/core/modules/file/tests/file_test/src/StreamWrapper/DummyRemoteStreamWrapper.php
index 12019e65833215bc1088a717df96a7ffe6eddd18..9f18d2a2d4c9ed9133b2d4d2769b6675c7a9f39e 100644
--- a/core/modules/file/tests/file_test/src/StreamWrapper/DummyRemoteStreamWrapper.php
+++ b/core/modules/file/tests/file_test/src/StreamWrapper/DummyRemoteStreamWrapper.php
@@ -27,7 +27,7 @@ public function getDescription() {
     return t('Dummy wrapper for simpletest (remote).');
   }
 
-  function realpath() {
+  public function realpath() {
     return FALSE;
   }
 
diff --git a/core/modules/file/tests/file_test/src/StreamWrapper/DummyStreamWrapper.php b/core/modules/file/tests/file_test/src/StreamWrapper/DummyStreamWrapper.php
index 1428300f194221369c886a3cb2a01c5152f58b17..6ce842470fcd4955e7d66c5079664e8443ef51fb 100644
--- a/core/modules/file/tests/file_test/src/StreamWrapper/DummyStreamWrapper.php
+++ b/core/modules/file/tests/file_test/src/StreamWrapper/DummyStreamWrapper.php
@@ -25,7 +25,7 @@ public function getDescription() {
     return t('Dummy wrapper for simpletest.');
   }
 
-  function getDirectoryPath() {
+  public function getDirectoryPath() {
     return \Drupal::service('site.path') . '/files';
   }
 
@@ -34,7 +34,7 @@ function getDirectoryPath() {
    *
    * Return a dummy path for testing.
    */
-  function getInternalUri() {
+  public function getInternalUri() {
     return '/dummy/example.txt';
   }
 
@@ -43,7 +43,7 @@ function getInternalUri() {
    *
    * Return the HTML URI of a public file.
    */
-  function getExternalUrl() {
+  public function getExternalUrl() {
     return '/dummy/example.txt';
   }
 
diff --git a/core/modules/file/tests/src/Functional/FileFieldTestBase.php b/core/modules/file/tests/src/Functional/FileFieldTestBase.php
index af3747bcc50c0c1ba81cc7b0de6265141fb5bd6e..9ed447aaf25e969eee31621e04e7f588791f8ed0 100644
--- a/core/modules/file/tests/src/Functional/FileFieldTestBase.php
+++ b/core/modules/file/tests/src/Functional/FileFieldTestBase.php
@@ -39,7 +39,7 @@ protected function setUp() {
    *
    * @return \Drupal\file\FileInterface
    */
-  function getTestFile($type_name, $size = NULL) {
+  public function getTestFile($type_name, $size = NULL) {
     // Get a file to upload.
     $file = current($this->drupalGetTestFiles($type_name, $size));
 
@@ -53,7 +53,7 @@ function getTestFile($type_name, $size = NULL) {
   /**
    * Retrieves the fid of the last inserted file.
    */
-  function getLastFileId() {
+  public function getLastFileId() {
     return (int) db_query('SELECT MAX(fid) FROM {file_managed}')->fetchField();
   }
 
@@ -73,7 +73,7 @@ function getLastFileId() {
    * @param array $widget_settings
    *   A list of widget settings that will be added to the widget defaults.
    */
-  function createFileField($name, $entity_type, $bundle, $storage_settings = [], $field_settings = [], $widget_settings = []) {
+  public function createFileField($name, $entity_type, $bundle, $storage_settings = [], $field_settings = [], $widget_settings = []) {
     $field_storage = FieldStorageConfig::create([
       'entity_type' => $entity_type,
       'field_name' => $name,
@@ -101,7 +101,7 @@ function createFileField($name, $entity_type, $bundle, $storage_settings = [], $
    * @param array $widget_settings
    *   A list of widget settings that will be added to the widget defaults.
    */
-  function attachFileField($name, $entity_type, $bundle, $field_settings = [], $widget_settings = []) {
+  public function attachFileField($name, $entity_type, $bundle, $field_settings = [], $widget_settings = []) {
     $field = [
       'field_name' => $name,
       'label' => $name,
@@ -130,7 +130,7 @@ function attachFileField($name, $entity_type, $bundle, $field_settings = [], $wi
   /**
    * Updates an existing file field with new settings.
    */
-  function updateFileField($name, $type_name, $field_settings = [], $widget_settings = []) {
+  public function updateFileField($name, $type_name, $field_settings = [], $widget_settings = []) {
     $field = FieldConfig::loadByName('node', $type_name, $name);
     $field->setSettings(array_merge($field->getSettings(), $field_settings));
     $field->save();
@@ -160,7 +160,7 @@ function updateFileField($name, $type_name, $field_settings = [], $widget_settin
    * @return int
    *   The node id.
    */
-  function uploadNodeFile(FileInterface $file, $field_name, $nid_or_type, $new_revision = TRUE, array $extras = []) {
+  public function uploadNodeFile(FileInterface $file, $field_name, $nid_or_type, $new_revision = TRUE, array $extras = []) {
     return $this->uploadNodeFiles([$file], $field_name, $nid_or_type, $new_revision, $extras);
   }
 
@@ -182,7 +182,7 @@ function uploadNodeFile(FileInterface $file, $field_name, $nid_or_type, $new_rev
    * @return int
    *   The node id.
    */
-  function uploadNodeFiles(array $files, $field_name, $nid_or_type, $new_revision = TRUE, array $extras = []) {
+  public function uploadNodeFiles(array $files, $field_name, $nid_or_type, $new_revision = TRUE, array $extras = []) {
     $edit = [
       'title[0][value]' => $this->randomMachineName(),
       'revision' => (string) (int) $new_revision,
@@ -234,7 +234,7 @@ function uploadNodeFiles(array $files, $field_name, $nid_or_type, $new_revision
    *
    * Note that if replacing a file, it must first be removed then added again.
    */
-  function removeNodeFile($nid, $new_revision = TRUE) {
+  public function removeNodeFile($nid, $new_revision = TRUE) {
     $edit = [
       'revision' => (string) (int) $new_revision,
     ];
@@ -246,7 +246,7 @@ function removeNodeFile($nid, $new_revision = TRUE) {
   /**
    * Replaces a file within a node.
    */
-  function replaceNodeFile($file, $field_name, $nid, $new_revision = TRUE) {
+  public function replaceNodeFile($file, $field_name, $nid, $new_revision = TRUE) {
     $edit = [
       'files[' . $field_name . '_0]' => drupal_realpath($file->getFileUri()),
       'revision' => (string) (int) $new_revision,
@@ -276,7 +276,7 @@ public static function assertFileExists($file, $message = NULL) {
   /**
    * Asserts that a file exists in the database.
    */
-  function assertFileEntryExists($file, $message = NULL) {
+  public function assertFileEntryExists($file, $message = NULL) {
     $this->container->get('entity.manager')->getStorage('file')->resetCache();
     $db_file = File::load($file->id());
     $message = isset($message) ? $message : format_string('File %file exists in database at the correct path.', ['%file' => $file->getFileUri()]);
@@ -303,7 +303,7 @@ public static function assertFileNotExists($file, $message = NULL) {
   /**
    * Asserts that a file does not exist in the database.
    */
-  function assertFileEntryNotExists($file, $message) {
+  public function assertFileEntryNotExists($file, $message) {
     $this->container->get('entity.manager')->getStorage('file')->resetCache();
     $message = isset($message) ? $message : format_string('File %file exists in database at the correct path.', ['%file' => $file->getFileUri()]);
     $this->assertFalse(File::load($file->id()), $message);
@@ -312,7 +312,7 @@ function assertFileEntryNotExists($file, $message) {
   /**
    * Asserts that a file's status is set to permanent in the database.
    */
-  function assertFileIsPermanent(FileInterface $file, $message = NULL) {
+  public function assertFileIsPermanent(FileInterface $file, $message = NULL) {
     $message = isset($message) ? $message : format_string('File %file is permanent.', ['%file' => $file->getFileUri()]);
     $this->assertTrue($file->isPermanent(), $message);
   }
diff --git a/core/modules/file/tests/src/Functional/FileManagedAccessTest.php b/core/modules/file/tests/src/Functional/FileManagedAccessTest.php
index fc6d85cb36cea72640d04dc0da7f514aae20bae5..01419d44630273d54cc77916363375823d14878a 100644
--- a/core/modules/file/tests/src/Functional/FileManagedAccessTest.php
+++ b/core/modules/file/tests/src/Functional/FileManagedAccessTest.php
@@ -14,7 +14,7 @@ class FileManagedAccessTest extends FileManagedTestBase {
   /**
    * Tests if public file is always accessible.
    */
-  function testFileAccess() {
+  public function testFileAccess() {
     // Create a new file entity.
     $file = File::create([
       'uid' => 1,
diff --git a/core/modules/file/tests/src/Functional/FileManagedTestBase.php b/core/modules/file/tests/src/Functional/FileManagedTestBase.php
index 0adbe2c36b4a844b0c25b271395cd300fe1153aa..e0da7d1a0051357a9a226b21e1f28f93428629dc 100644
--- a/core/modules/file/tests/src/Functional/FileManagedTestBase.php
+++ b/core/modules/file/tests/src/Functional/FileManagedTestBase.php
@@ -33,7 +33,7 @@ protected function setUp() {
    *   An array of strings containing with the hook name; for example, 'load',
    *   'save', 'insert', etc.
    */
-  function assertFileHooksCalled($expected) {
+  public function assertFileHooksCalled($expected) {
     \Drupal::state()->resetCache();
 
     // Determine which hooks were called.
@@ -68,7 +68,7 @@ function assertFileHooksCalled($expected) {
    * @param string|null $message
    *   Optional translated string message.
    */
-  function assertFileHookCalled($hook, $expected_count = 1, $message = NULL) {
+  public function assertFileHookCalled($hook, $expected_count = 1, $message = NULL) {
     $actual_count = count(file_test_get_calls($hook));
 
     if (!isset($message)) {
@@ -93,7 +93,7 @@ function assertFileHookCalled($hook, $expected_count = 1, $message = NULL) {
    * @param \Drupal\file\FileInterface $after
    *   File object to compare.
    */
-  function assertFileUnchanged(FileInterface $before, FileInterface $after) {
+  public function assertFileUnchanged(FileInterface $before, FileInterface $after) {
     $this->assertEqual($before->id(), $after->id(), t('File id is the same: %file1 == %file2.', ['%file1' => $before->id(), '%file2' => $after->id()]), 'File unchanged');
     $this->assertEqual($before->getOwner()->id(), $after->getOwner()->id(), t('File owner is the same: %file1 == %file2.', ['%file1' => $before->getOwner()->id(), '%file2' => $after->getOwner()->id()]), 'File unchanged');
     $this->assertEqual($before->getFilename(), $after->getFilename(), t('File name is the same: %file1 == %file2.', ['%file1' => $before->getFilename(), '%file2' => $after->getFilename()]), 'File unchanged');
@@ -111,7 +111,7 @@ function assertFileUnchanged(FileInterface $before, FileInterface $after) {
    * @param \Drupal\file\FileInterface $file2
    *   File object to compare.
    */
-  function assertDifferentFile(FileInterface $file1, FileInterface $file2) {
+  public function assertDifferentFile(FileInterface $file1, FileInterface $file2) {
     $this->assertNotEqual($file1->id(), $file2->id(), t('Files have different ids: %file1 != %file2.', ['%file1' => $file1->id(), '%file2' => $file2->id()]), 'Different file');
     $this->assertNotEqual($file1->getFileUri(), $file2->getFileUri(), t('Files have different paths: %file1 != %file2.', ['%file1' => $file1->getFileUri(), '%file2' => $file2->getFileUri()]), 'Different file');
   }
@@ -124,7 +124,7 @@ function assertDifferentFile(FileInterface $file1, FileInterface $file2) {
    * @param \Drupal\file\FileInterface $file2
    *   File object to compare.
    */
-  function assertSameFile(FileInterface $file1, FileInterface $file2) {
+  public function assertSameFile(FileInterface $file1, FileInterface $file2) {
     $this->assertEqual($file1->id(), $file2->id(), t('Files have the same ids: %file1 == %file2.', ['%file1' => $file1->id(), '%file2-fid' => $file2->id()]), 'Same file');
     $this->assertEqual($file1->getFileUri(), $file2->getFileUri(), t('Files have the same path: %file1 == %file2.', ['%file1' => $file1->getFileUri(), '%file2' => $file2->getFileUri()]), 'Same file');
   }
@@ -145,7 +145,7 @@ function assertSameFile(FileInterface $file1, FileInterface $file2) {
    * @return \Drupal\file\FileInterface
    *   File entity.
    */
-  function createFile($filepath = NULL, $contents = NULL, $scheme = NULL) {
+  public function createFile($filepath = NULL, $contents = NULL, $scheme = NULL) {
     // Don't count hook invocations caused by creating the file.
     \Drupal::state()->set('file_test.count_hook_invocations', FALSE);
     $file = File::create([
@@ -177,7 +177,7 @@ function createFile($filepath = NULL, $contents = NULL, $scheme = NULL) {
    * @return string
    *   File URI.
    */
-  function createUri($filepath = NULL, $contents = NULL, $scheme = NULL) {
+  public function createUri($filepath = NULL, $contents = NULL, $scheme = NULL) {
     if (!isset($filepath)) {
       // Prefix with non-latin characters to ensure that all file-related
       // tests work with international filenames.
diff --git a/core/modules/file/tests/src/Kernel/CopyTest.php b/core/modules/file/tests/src/Kernel/CopyTest.php
index 4c8d41fbec4b6ea161eb4a4d7df2b99eef86b682..3193cb6619123d9a39ec17e9e227d5ef2ab02d23 100644
--- a/core/modules/file/tests/src/Kernel/CopyTest.php
+++ b/core/modules/file/tests/src/Kernel/CopyTest.php
@@ -13,7 +13,7 @@ class CopyTest extends FileManagedUnitTestBase {
   /**
    * Test file copying in the normal, base case.
    */
-  function testNormal() {
+  public function testNormal() {
     $contents = $this->randomMachineName(10);
     $source = $this->createFile(NULL, $contents);
     $desired_uri = 'public://' . $this->randomMachineName();
@@ -42,7 +42,7 @@ function testNormal() {
   /**
    * Test renaming when copying over a file that already exists.
    */
-  function testExistingRename() {
+  public function testExistingRename() {
     // Setup a file to overwrite.
     $contents = $this->randomMachineName(10);
     $source = $this->createFile(NULL, $contents);
@@ -82,7 +82,7 @@ function testExistingRename() {
   /**
    * Test replacement when copying over a file that already exists.
    */
-  function testExistingReplace() {
+  public function testExistingReplace() {
     // Setup a file to overwrite.
     $contents = $this->randomMachineName(10);
     $source = $this->createFile(NULL, $contents);
@@ -121,7 +121,7 @@ function testExistingReplace() {
    * Test that copying over an existing file fails when FILE_EXISTS_ERROR is
    * specified.
    */
-  function testExistingError() {
+  public function testExistingError() {
     $contents = $this->randomMachineName(10);
     $source = $this->createFile();
     $target = $this->createFile(NULL, $contents);
diff --git a/core/modules/file/tests/src/Kernel/DeleteTest.php b/core/modules/file/tests/src/Kernel/DeleteTest.php
index 6d992a5423d5e8645b0c83a058da10c625d98a7c..3b868c0ad20f4320b14e2af070d537f15a909885 100644
--- a/core/modules/file/tests/src/Kernel/DeleteTest.php
+++ b/core/modules/file/tests/src/Kernel/DeleteTest.php
@@ -13,7 +13,7 @@ class DeleteTest extends FileManagedUnitTestBase {
   /**
    * Tries deleting a normal file (as opposed to a directory, symlink, etc).
    */
-  function testUnused() {
+  public function testUnused() {
     $file = $this->createFile();
 
     // Check that deletion removes the file and database record.
@@ -27,7 +27,7 @@ function testUnused() {
   /**
    * Tries deleting a file that is in use.
    */
-  function testInUse() {
+  public function testInUse() {
     $file = $this->createFile();
     $file_usage = $this->container->get('file.usage');
     $file_usage->add($file, 'testing', 'test', 1);
diff --git a/core/modules/file/tests/src/Kernel/FileManagedUnitTestBase.php b/core/modules/file/tests/src/Kernel/FileManagedUnitTestBase.php
index 3035b7cb218c7f83746e1e2f14bafc61f3fdacb7..7c43e9bfd07521351dab8d38d027808c08236c5e 100644
--- a/core/modules/file/tests/src/Kernel/FileManagedUnitTestBase.php
+++ b/core/modules/file/tests/src/Kernel/FileManagedUnitTestBase.php
@@ -46,7 +46,7 @@ protected function setUp() {
    *   Array with string containing with the hook name, e.g. 'load', 'save',
    *   'insert', etc.
    */
-  function assertFileHooksCalled($expected) {
+  public function assertFileHooksCalled($expected) {
     \Drupal::state()->resetCache();
 
     // Determine which hooks were called.
@@ -81,7 +81,7 @@ function assertFileHooksCalled($expected) {
    * @param string $message
    *   Optional translated string message.
    */
-  function assertFileHookCalled($hook, $expected_count = 1, $message = NULL) {
+  public function assertFileHookCalled($hook, $expected_count = 1, $message = NULL) {
     $actual_count = count(file_test_get_calls($hook));
 
     if (!isset($message)) {
@@ -106,7 +106,7 @@ function assertFileHookCalled($hook, $expected_count = 1, $message = NULL) {
    * @param \Drupal\file\FileInterface $after
    *   File object to compare.
    */
-  function assertFileUnchanged(FileInterface $before, FileInterface $after) {
+  public function assertFileUnchanged(FileInterface $before, FileInterface $after) {
     $this->assertEqual($before->id(), $after->id(), t('File id is the same: %file1 == %file2.', ['%file1' => $before->id(), '%file2' => $after->id()]), 'File unchanged');
     $this->assertEqual($before->getOwner()->id(), $after->getOwner()->id(), t('File owner is the same: %file1 == %file2.', ['%file1' => $before->getOwner()->id(), '%file2' => $after->getOwner()->id()]), 'File unchanged');
     $this->assertEqual($before->getFilename(), $after->getFilename(), t('File name is the same: %file1 == %file2.', ['%file1' => $before->getFilename(), '%file2' => $after->getFilename()]), 'File unchanged');
@@ -124,7 +124,7 @@ function assertFileUnchanged(FileInterface $before, FileInterface $after) {
    * @param \Drupal\file\FileInterface $file2
    *   File object to compare.
    */
-  function assertDifferentFile(FileInterface $file1, FileInterface $file2) {
+  public function assertDifferentFile(FileInterface $file1, FileInterface $file2) {
     $this->assertNotEqual($file1->id(), $file2->id(), t('Files have different ids: %file1 != %file2.', ['%file1' => $file1->id(), '%file2' => $file2->id()]), 'Different file');
     $this->assertNotEqual($file1->getFileUri(), $file2->getFileUri(), t('Files have different paths: %file1 != %file2.', ['%file1' => $file1->getFileUri(), '%file2' => $file2->getFileUri()]), 'Different file');
   }
@@ -137,7 +137,7 @@ function assertDifferentFile(FileInterface $file1, FileInterface $file2) {
    * @param \Drupal\file\FileInterface $file2
    *   File object to compare.
    */
-  function assertSameFile(FileInterface $file1, FileInterface $file2) {
+  public function assertSameFile(FileInterface $file1, FileInterface $file2) {
     $this->assertEqual($file1->id(), $file2->id(), t('Files have the same ids: %file1 == %file2.', ['%file1' => $file1->id(), '%file2-fid' => $file2->id()]), 'Same file');
     $this->assertEqual($file1->getFileUri(), $file2->getFileUri(), t('Files have the same path: %file1 == %file2.', ['%file1' => $file1->getFileUri(), '%file2' => $file2->getFileUri()]), 'Same file');
   }
@@ -158,7 +158,7 @@ function assertSameFile(FileInterface $file1, FileInterface $file2) {
    * @return \Drupal\file\FileInterface
    *   File entity.
    */
-  function createFile($filepath = NULL, $contents = NULL, $scheme = NULL) {
+  public function createFile($filepath = NULL, $contents = NULL, $scheme = NULL) {
     // Don't count hook invocations caused by creating the file.
     \Drupal::state()->set('file_test.count_hook_invocations', FALSE);
     $file = File::create([
@@ -190,7 +190,7 @@ function createFile($filepath = NULL, $contents = NULL, $scheme = NULL) {
    * @return string
    *   File URI.
    */
-  function createUri($filepath = NULL, $contents = NULL, $scheme = NULL) {
+  public function createUri($filepath = NULL, $contents = NULL, $scheme = NULL) {
     if (!isset($filepath)) {
       // Prefix with non-latin characters to ensure that all file-related
       // tests work with international filenames.
diff --git a/core/modules/file/tests/src/Kernel/LoadTest.php b/core/modules/file/tests/src/Kernel/LoadTest.php
index 8cbaccc2c90f41f56535eabe84c950a767d839c5..9d715395b0ae420b96e8e693d2f4f3b21d716ff3 100644
--- a/core/modules/file/tests/src/Kernel/LoadTest.php
+++ b/core/modules/file/tests/src/Kernel/LoadTest.php
@@ -13,7 +13,7 @@ class LoadTest extends FileManagedUnitTestBase {
   /**
    * Try to load a non-existent file by fid.
    */
-  function testLoadMissingFid() {
+  public function testLoadMissingFid() {
     $this->assertFalse(File::load(-1), 'Try to load an invalid fid fails.');
     $this->assertFileHooksCalled([]);
   }
@@ -21,7 +21,7 @@ function testLoadMissingFid() {
   /**
    * Try to load a non-existent file by URI.
    */
-  function testLoadMissingFilepath() {
+  public function testLoadMissingFilepath() {
     $files = entity_load_multiple_by_properties('file', ['uri' => 'foobar://misc/druplicon.png']);
     $this->assertFalse(reset($files), "Try to load a file that doesn't exist in the database fails.");
     $this->assertFileHooksCalled([]);
@@ -30,7 +30,7 @@ function testLoadMissingFilepath() {
   /**
    * Try to load a non-existent file by status.
    */
-  function testLoadInvalidStatus() {
+  public function testLoadInvalidStatus() {
     $files = entity_load_multiple_by_properties('file', ['status' => -99]);
     $this->assertFalse(reset($files), 'Trying to load a file with an invalid status fails.');
     $this->assertFileHooksCalled([]);
@@ -39,7 +39,7 @@ function testLoadInvalidStatus() {
   /**
    * Load a single file and ensure that the correct values are returned.
    */
-  function testSingleValues() {
+  public function testSingleValues() {
     // Create a new file entity from scratch so we know the values.
     $file = $this->createFile('druplicon.txt', NULL, 'public');
     $by_fid_file = File::load($file->id());
@@ -56,7 +56,7 @@ function testSingleValues() {
   /**
    * This will test loading file data from the database.
    */
-  function testMultiple() {
+  public function testMultiple() {
     // Create a new file entity.
     $file = $this->createFile('druplicon.txt', NULL, 'public');
 
diff --git a/core/modules/file/tests/src/Kernel/Migrate/d6/MigrateUploadTest.php b/core/modules/file/tests/src/Kernel/Migrate/d6/MigrateUploadTest.php
index 2ab104dae34ee40bf5459617055b73ab6945afcf..e511a217cc0fa04d516e8c77bd1a9223b3a34877 100644
--- a/core/modules/file/tests/src/Kernel/Migrate/d6/MigrateUploadTest.php
+++ b/core/modules/file/tests/src/Kernel/Migrate/d6/MigrateUploadTest.php
@@ -57,7 +57,7 @@ protected function setUp() {
   /**
    * Test upload migration from Drupal 6 to Drupal 8.
    */
-  function testUpload() {
+  public function testUpload() {
     $this->container->get('entity.manager')
       ->getStorage('node')
       ->resetCache([1, 2]);
diff --git a/core/modules/file/tests/src/Kernel/MoveTest.php b/core/modules/file/tests/src/Kernel/MoveTest.php
index f2f1034282720f0b7dee628da4c45b763642b362..3183ecfe42d83789e75b14c931656f29e83d9fe1 100644
--- a/core/modules/file/tests/src/Kernel/MoveTest.php
+++ b/core/modules/file/tests/src/Kernel/MoveTest.php
@@ -13,7 +13,7 @@ class MoveTest extends FileManagedUnitTestBase {
   /**
    * Move a normal file.
    */
-  function testNormal() {
+  public function testNormal() {
     $contents = $this->randomMachineName(10);
     $source = $this->createFile(NULL, $contents);
     $desired_filepath = 'public://' . $this->randomMachineName();
@@ -43,7 +43,7 @@ function testNormal() {
   /**
    * Test renaming when moving onto a file that already exists.
    */
-  function testExistingRename() {
+  public function testExistingRename() {
     // Setup a file to overwrite.
     $contents = $this->randomMachineName(10);
     $source = $this->createFile(NULL, $contents);
@@ -78,7 +78,7 @@ function testExistingRename() {
   /**
    * Test replacement when moving onto a file that already exists.
    */
-  function testExistingReplace() {
+  public function testExistingReplace() {
     // Setup a file to overwrite.
     $contents = $this->randomMachineName(10);
     $source = $this->createFile(NULL, $contents);
@@ -110,7 +110,7 @@ function testExistingReplace() {
   /**
    * Test replacement when moving onto itself.
    */
-  function testExistingReplaceSelf() {
+  public function testExistingReplaceSelf() {
     // Setup a file to overwrite.
     $contents = $this->randomMachineName(10);
     $source = $this->createFile(NULL, $contents);
@@ -133,7 +133,7 @@ function testExistingReplaceSelf() {
    * Test that moving onto an existing file fails when FILE_EXISTS_ERROR is
    * specified.
    */
-  function testExistingError() {
+  public function testExistingError() {
     $contents = $this->randomMachineName(10);
     $source = $this->createFile();
     $target = $this->createFile(NULL, $contents);
diff --git a/core/modules/file/tests/src/Kernel/SaveDataTest.php b/core/modules/file/tests/src/Kernel/SaveDataTest.php
index f92ef9a5cb72cd1713843104c4a9a55cd7feae91..747c7b1ca546480d1fdb703eb864dd6579aec943 100644
--- a/core/modules/file/tests/src/Kernel/SaveDataTest.php
+++ b/core/modules/file/tests/src/Kernel/SaveDataTest.php
@@ -13,7 +13,7 @@ class SaveDataTest extends FileManagedUnitTestBase {
   /**
    * Test the file_save_data() function when no filename is provided.
    */
-  function testWithoutFilename() {
+  public function testWithoutFilename() {
     $contents = $this->randomMachineName(8);
 
     $result = file_save_data($contents);
@@ -35,7 +35,7 @@ function testWithoutFilename() {
   /**
    * Test the file_save_data() function when a filename is provided.
    */
-  function testWithFilename() {
+  public function testWithFilename() {
     $contents = $this->randomMachineName(8);
 
     // Using filename with non-latin characters.
@@ -60,7 +60,7 @@ function testWithFilename() {
   /**
    * Test file_save_data() when renaming around an existing file.
    */
-  function testExistingRename() {
+  public function testExistingRename() {
     // Setup a file to overwrite.
     $existing = $this->createFile();
     $contents = $this->randomMachineName(8);
@@ -88,7 +88,7 @@ function testExistingRename() {
   /**
    * Test file_save_data() when replacing an existing file.
    */
-  function testExistingReplace() {
+  public function testExistingReplace() {
     // Setup a file to overwrite.
     $existing = $this->createFile();
     $contents = $this->randomMachineName(8);
@@ -115,7 +115,7 @@ function testExistingReplace() {
   /**
    * Test that file_save_data() fails overwriting an existing file.
    */
-  function testExistingError() {
+  public function testExistingError() {
     $contents = $this->randomMachineName(8);
     $existing = $this->createFile(NULL, $contents);
 
diff --git a/core/modules/file/tests/src/Kernel/SaveTest.php b/core/modules/file/tests/src/Kernel/SaveTest.php
index 8d91d81aa99e412e9e4624050f6b99bc319e1c7f..87eb17b20d54fbc9cc1e8a0e310311f65714d318 100644
--- a/core/modules/file/tests/src/Kernel/SaveTest.php
+++ b/core/modules/file/tests/src/Kernel/SaveTest.php
@@ -10,7 +10,7 @@
  * @group file
  */
 class SaveTest extends FileManagedUnitTestBase {
-  function testFileSave() {
+  public function testFileSave() {
     // Create a new file entity.
     $file = File::create([
       'uid' => 1,
diff --git a/core/modules/file/tests/src/Kernel/SpaceUsedTest.php b/core/modules/file/tests/src/Kernel/SpaceUsedTest.php
index f8752c4f6a161a10418984db774fdc01caad8f9a..7dbc7fdeedf0f696d2a00763cf5e692f7dab63f4 100644
--- a/core/modules/file/tests/src/Kernel/SpaceUsedTest.php
+++ b/core/modules/file/tests/src/Kernel/SpaceUsedTest.php
@@ -52,7 +52,7 @@ protected function createFileWithSize($uri, $size, $uid, $status = FILE_STATUS_P
   /**
    * Test different users with the default status.
    */
-  function testFileSpaceUsed() {
+  public function testFileSpaceUsed() {
     $file = $this->container->get('entity.manager')->getStorage('file');
     // Test different users with default status.
     $this->assertEqual($file->spaceUsed(2), 70);
diff --git a/core/modules/file/tests/src/Kernel/UsageTest.php b/core/modules/file/tests/src/Kernel/UsageTest.php
index 6752247d941746cb6b309bfe9479d0566ef610db..672de0fb5a8f8a166009cce49ef481b20886f597 100644
--- a/core/modules/file/tests/src/Kernel/UsageTest.php
+++ b/core/modules/file/tests/src/Kernel/UsageTest.php
@@ -18,7 +18,7 @@ class UsageTest extends FileManagedUnitTestBase {
   /**
    * Tests \Drupal\file\FileUsage\DatabaseFileUsageBackend::listUsage().
    */
-  function testGetUsage() {
+  public function testGetUsage() {
     $file = $this->createFile();
     db_insert('file_usage')
       ->fields([
@@ -51,7 +51,7 @@ function testGetUsage() {
   /**
    * Tests \Drupal\file\FileUsage\DatabaseFileUsageBackend::add().
    */
-  function testAddUsage() {
+  public function testAddUsage() {
     $file = $this->createFile();
     $file_usage = $this->container->get('file.usage');
     $file_usage->add($file, 'testing', 'foo', 1);
@@ -77,7 +77,7 @@ function testAddUsage() {
   /**
    * Tests \Drupal\file\FileUsage\DatabaseFileUsageBackend::delete().
    */
-  function testRemoveUsage() {
+  public function testRemoveUsage() {
     $file = $this->createFile();
     $file_usage = $this->container->get('file.usage');
     db_insert('file_usage')
@@ -124,7 +124,7 @@ function testRemoveUsage() {
    * We are using UPDATE statements because using the API would set the
    * timestamp.
    */
-  function createTempFiles() {
+  public function createTempFiles() {
     // Temporary file that is old.
     $temp_old = file_save_data('');
     db_update('file_managed')
@@ -161,7 +161,7 @@ function createTempFiles() {
   /**
    * Ensure that temporary files are removed by default.
    */
-  function testTempFileCleanupDefault() {
+  public function testTempFileCleanupDefault() {
     list($temp_old, $temp_new, $perm_old, $perm_new) = $this->createTempFiles();
 
     // Run cron and then ensure that only the old, temp file was deleted.
@@ -175,7 +175,7 @@ function testTempFileCleanupDefault() {
   /**
    * Ensure that temporary files are kept as configured.
    */
-  function testTempFileNoCleanup() {
+  public function testTempFileNoCleanup() {
     list($temp_old, $temp_new, $perm_old, $perm_new) = $this->createTempFiles();
 
     // Set the max age to 0, meaning no temporary files will be deleted.
@@ -194,7 +194,7 @@ function testTempFileNoCleanup() {
   /**
    * Ensure that temporary files are kept as configured.
    */
-  function testTempFileCustomCleanup() {
+  public function testTempFileCustomCleanup() {
     list($temp_old, $temp_new, $perm_old, $perm_new) = $this->createTempFiles();
 
     // Set the max age to older than default.
diff --git a/core/modules/file/tests/src/Kernel/ValidateTest.php b/core/modules/file/tests/src/Kernel/ValidateTest.php
index 2fc88176a7c7eaf7663ba49f56bbfeb6d1fbc106..285cc86dc034ad71f07475e864ba74cce445715b 100644
--- a/core/modules/file/tests/src/Kernel/ValidateTest.php
+++ b/core/modules/file/tests/src/Kernel/ValidateTest.php
@@ -12,7 +12,7 @@ class ValidateTest extends FileManagedUnitTestBase {
   /**
    * Test that the validators passed into are checked.
    */
-  function testCallerValidation() {
+  public function testCallerValidation() {
     $file = $this->createFile();
 
     // Empty validators.
diff --git a/core/modules/file/tests/src/Kernel/ValidatorTest.php b/core/modules/file/tests/src/Kernel/ValidatorTest.php
index 30a6fe8bea356a40720684384de959a1fbeb8571..b645f3913920ad0a76b44b28fa75735cb3935b2c 100644
--- a/core/modules/file/tests/src/Kernel/ValidatorTest.php
+++ b/core/modules/file/tests/src/Kernel/ValidatorTest.php
@@ -40,7 +40,7 @@ protected function setUp() {
   /**
    * Test the file_validate_extensions() function.
    */
-  function testFileValidateExtensions() {
+  public function testFileValidateExtensions() {
     $file = File::create(['filename' => 'asdf.txt']);
     $errors = file_validate_extensions($file, 'asdf txt pork');
     $this->assertEqual(count($errors), 0, 'Valid extension accepted.', 'File');
@@ -53,7 +53,7 @@ function testFileValidateExtensions() {
   /**
    * This ensures a specific file is actually an image.
    */
-  function testFileValidateIsImage() {
+  public function testFileValidateIsImage() {
     $this->assertTrue(file_exists($this->image->getFileUri()), 'The image being tested exists.', 'File');
     $errors = file_validate_is_image($this->image);
     $this->assertEqual(count($errors), 0, 'No error reported for our image file.', 'File');
@@ -68,7 +68,7 @@ function testFileValidateIsImage() {
    *
    * The image will be resized if it's too large.
    */
-  function testFileValidateImageResolution() {
+  public function testFileValidateImageResolution() {
     // Non-images.
     $errors = file_validate_image_resolution($this->nonImage);
     $this->assertEqual(count($errors), 0, 'Should not get any errors for a non-image file.', 'File');
@@ -116,7 +116,7 @@ function testFileValidateImageResolution() {
   /**
    * This will ensure the filename length is valid.
    */
-  function testFileValidateNameLength() {
+  public function testFileValidateNameLength() {
     // Create a new file entity.
     $file = File::create();
 
@@ -141,7 +141,7 @@ function testFileValidateNameLength() {
   /**
    * Test file_validate_size().
    */
-  function testFileValidateSize() {
+  public function testFileValidateSize() {
     // Create a file with a size of 1000 bytes, and quotas of only 1 byte.
     $file = File::create(['filesize' => 1000]);
     $errors = file_validate_size($file, 0, 0);
diff --git a/core/modules/filter/src/Controller/FilterController.php b/core/modules/filter/src/Controller/FilterController.php
index 09652b7d8cda27b07e6834da213a30f738536278..8052e4c8b756b35e7c7c481326c121b5b56571d9 100644
--- a/core/modules/filter/src/Controller/FilterController.php
+++ b/core/modules/filter/src/Controller/FilterController.php
@@ -21,7 +21,7 @@ class FilterController {
    *
    * @see template_preprocess_filter_tips()
    */
-  function filterTips(FilterFormatInterface $filter_format = NULL) {
+  public function filterTips(FilterFormatInterface $filter_format = NULL) {
     $tips = $filter_format ? $filter_format->id() : -1;
 
     $build = [
diff --git a/core/modules/filter/src/Tests/FilterAdminTest.php b/core/modules/filter/src/Tests/FilterAdminTest.php
index b967101ec1fc168f1de5181c777cb1c53634ee8c..aceeff56cc68acfc059a34520ce358a884b79d76 100644
--- a/core/modules/filter/src/Tests/FilterAdminTest.php
+++ b/core/modules/filter/src/Tests/FilterAdminTest.php
@@ -110,7 +110,7 @@ protected function setUp() {
   /**
    * Tests the format administration functionality.
    */
-  function testFormatAdmin() {
+  public function testFormatAdmin() {
     // Add text format.
     $this->drupalGet('admin/config/content/formats');
     $this->clickLink('Add text format');
@@ -185,7 +185,7 @@ function testFormatAdmin() {
   /**
    * Tests filter administration functionality.
    */
-  function testFilterAdmin() {
+  public function testFilterAdmin() {
     $first_filter = 'filter_autop';
     $second_filter = 'filter_url';
 
@@ -356,7 +356,7 @@ function testFilterAdmin() {
   /**
    * Tests the URL filter settings form is properly validated.
    */
-  function testUrlFilterAdmin() {
+  public function testUrlFilterAdmin() {
     // The form does not save with an invalid filter URL length.
     $edit = [
       'filters[filter_url][settings][filter_url_length]' => $this->randomMachineName(4),
@@ -368,7 +368,7 @@ function testUrlFilterAdmin() {
   /**
    * Tests whether filter tips page is not HTML escaped.
    */
-  function testFilterTipHtmlEscape() {
+  public function testFilterTipHtmlEscape() {
     $this->drupalLogin($this->adminUser);
     global $base_url;
 
diff --git a/core/modules/filter/src/Tests/FilterFormatAccessTest.php b/core/modules/filter/src/Tests/FilterFormatAccessTest.php
index c306585b44901edab10e15ac98e6210f634d6f2a..a4c23b2d5531abb75edd418f3b924171a159e196 100644
--- a/core/modules/filter/src/Tests/FilterFormatAccessTest.php
+++ b/core/modules/filter/src/Tests/FilterFormatAccessTest.php
@@ -118,7 +118,7 @@ protected function setUp() {
   /**
    * Tests the Filter format access permissions functionality.
    */
-  function testFormatPermissions() {
+  public function testFormatPermissions() {
     // Make sure that a regular user only has access to the text formats for
     // which they were granted access.
     $fallback_format = FilterFormat::load(filter_fallback_format());
@@ -182,7 +182,7 @@ function testFormatPermissions() {
   /**
    * Tests if text format is available to a role.
    */
-  function testFormatRoles() {
+  public function testFormatRoles() {
     // Get the role ID assigned to the regular user.
     $roles = $this->webUser->getRoles(TRUE);
     $rid = $roles[0];
@@ -212,7 +212,7 @@ function testFormatRoles() {
    * be edited by administrators only, but that the administrator is forced to
    * choose a new format before saving the page.
    */
-  function testFormatWidgetPermissions() {
+  public function testFormatWidgetPermissions() {
     $body_value_key = 'body[0][value]';
     $body_format_key = 'body[0][format]';
 
diff --git a/core/modules/filter/src/Tests/FilterHtmlImageSecureTest.php b/core/modules/filter/src/Tests/FilterHtmlImageSecureTest.php
index 5cbdbb0b728d87759e54f09a6e26ab2579c10e1b..249021a83263a4eca1e4192d8c4a8b40b8b33901 100644
--- a/core/modules/filter/src/Tests/FilterHtmlImageSecureTest.php
+++ b/core/modules/filter/src/Tests/FilterHtmlImageSecureTest.php
@@ -74,7 +74,7 @@ protected function setUp() {
   /**
    * Tests removal of images having a non-local source.
    */
-  function testImageSource() {
+  public function testImageSource() {
     global $base_url;
 
     $public_files_path = PublicStream::basePath();
diff --git a/core/modules/filter/tests/src/Functional/FilterCaptionTwigDebugTest.php b/core/modules/filter/tests/src/Functional/FilterCaptionTwigDebugTest.php
index ef520c75e55471153af70fbc67db3bae612da08d..f5423e7dd7140373f30c36b66b0bb66bd7372f20 100644
--- a/core/modules/filter/tests/src/Functional/FilterCaptionTwigDebugTest.php
+++ b/core/modules/filter/tests/src/Functional/FilterCaptionTwigDebugTest.php
@@ -76,7 +76,7 @@ protected function tearDown() {
   /**
    * Test the caption filter with Twig debugging on.
    */
-  function testCaptionFilter() {
+  public function testCaptionFilter() {
     /** @var \Drupal\Core\Render\RendererInterface $renderer */
     $renderer = \Drupal::service('renderer');
     $filter = $this->filters['filter_caption'];
diff --git a/core/modules/filter/tests/src/Functional/FilterDefaultFormatTest.php b/core/modules/filter/tests/src/Functional/FilterDefaultFormatTest.php
index 4aee647f9626b1965c536ad48a52247f4ad22a0a..45c37117113334112cb1ba509bd7a5505b75c801 100644
--- a/core/modules/filter/tests/src/Functional/FilterDefaultFormatTest.php
+++ b/core/modules/filter/tests/src/Functional/FilterDefaultFormatTest.php
@@ -23,7 +23,7 @@ class FilterDefaultFormatTest extends BrowserTestBase {
   /**
    * Tests if the default text format is accessible to users.
    */
-  function testDefaultTextFormats() {
+  public function testDefaultTextFormats() {
     // Create two text formats, and two users. The first user has access to
     // both formats, but the second user only has access to the second one.
     $admin_user = $this->drupalCreateUser(['administer filters']);
diff --git a/core/modules/filter/tests/src/Functional/FilterHooksTest.php b/core/modules/filter/tests/src/Functional/FilterHooksTest.php
index 2ff3e4301e995b87dbd0ad8f310903976106e71d..c799460988f9e4782e8a0fe119cd5d4ef0462d83 100644
--- a/core/modules/filter/tests/src/Functional/FilterHooksTest.php
+++ b/core/modules/filter/tests/src/Functional/FilterHooksTest.php
@@ -26,7 +26,7 @@ class FilterHooksTest extends BrowserTestBase {
    * Tests that hooks run correctly on creating, editing, and deleting a text
    * format.
    */
-  function testFilterHooks() {
+  public function testFilterHooks() {
     // Create content type, with underscores.
     $type_name = 'test_' . strtolower($this->randomMachineName());
     $type = $this->drupalCreateContentType(['name' => $type_name, 'type' => $type_name]);
diff --git a/core/modules/filter/tests/src/Functional/FilterNoFormatTest.php b/core/modules/filter/tests/src/Functional/FilterNoFormatTest.php
index 22b3ac65b0a1cd3f7efdf418976364a696d59e78..19c57ac00f6a6e60ce99f3c5adfb36e5d8ccc008 100644
--- a/core/modules/filter/tests/src/Functional/FilterNoFormatTest.php
+++ b/core/modules/filter/tests/src/Functional/FilterNoFormatTest.php
@@ -24,7 +24,7 @@ class FilterNoFormatTest extends BrowserTestBase {
    * Tests if text with no format is filtered the same way as text in the
    * fallback format.
    */
-  function testCheckMarkupNoFormat() {
+  public function testCheckMarkupNoFormat() {
     // Create some text. Include some HTML and line breaks, so we get a good
     // test of the filtering that is applied to it.
     $text = "<strong>" . $this->randomMachineName(32) . "</strong>\n\n<div>" . $this->randomMachineName(32) . "</div>";
diff --git a/core/modules/filter/tests/src/Functional/FilterSecurityTest.php b/core/modules/filter/tests/src/Functional/FilterSecurityTest.php
index af1240e772a44149a38cf2b336e4d7ce95bccce1..4a5b7c49d28e85986f680f53b9d86ee04ce5ef3d 100644
--- a/core/modules/filter/tests/src/Functional/FilterSecurityTest.php
+++ b/core/modules/filter/tests/src/Functional/FilterSecurityTest.php
@@ -51,7 +51,7 @@ protected function setUp() {
    * Tests that filtered content is emptied when an actively used filter module
    * is disabled.
    */
-  function testDisableFilterModule() {
+  public function testDisableFilterModule() {
     // Create a new node.
     $node = $this->drupalCreateNode(['promote' => 1]);
     $body_raw = $node->body->value;
@@ -81,7 +81,7 @@ function testDisableFilterModule() {
   /**
    * Tests that security filters are enforced even when marked to be skipped.
    */
-  function testSkipSecurityFilters() {
+  public function testSkipSecurityFilters() {
     $text = "Text with some disallowed tags: <script />, <p><object>unicorn</object></p>, <i><table></i>.";
     $expected_filtered_text = "Text with some disallowed tags: , <p>unicorn</p>, .";
     $this->assertEqual(check_markup($text, 'filtered_html', '', []), $expected_filtered_text, 'Expected filter result.');
diff --git a/core/modules/filter/tests/src/Kernel/FilterAPITest.php b/core/modules/filter/tests/src/Kernel/FilterAPITest.php
index 85ea05edf6d5604f955495ae3308e82eeaa190ec..2203bbec1f99cfca54d322b7d1b0b0d333591df3 100644
--- a/core/modules/filter/tests/src/Kernel/FilterAPITest.php
+++ b/core/modules/filter/tests/src/Kernel/FilterAPITest.php
@@ -30,7 +30,7 @@ protected function setUp() {
   /**
    * Tests that the filter order is respected.
    */
-  function testCheckMarkupFilterOrder() {
+  public function testCheckMarkupFilterOrder() {
     // Create crazy HTML format.
     $crazy_format = FilterFormat::create([
       'format' => 'crazy',
@@ -61,7 +61,7 @@ function testCheckMarkupFilterOrder() {
   /**
    * Tests the ability to apply only a subset of filters.
    */
-  function testCheckMarkupFilterSubset() {
+  public function testCheckMarkupFilterSubset() {
     $text = "Text with <marquee>evil content and</marquee> a URL: https://www.drupal.org!";
     $expected_filtered_text = "Text with evil content and a URL: <a href=\"https://www.drupal.org\">https://www.drupal.org</a>!";
     $expected_filter_text_without_html_generators = "Text with evil content and a URL: https://www.drupal.org!";
@@ -98,7 +98,7 @@ function testCheckMarkupFilterSubset() {
    *   - \Drupal\filter\Entity\FilterFormatInterface::getHtmlRestrictions()
    *   - \Drupal\filter\Entity\FilterFormatInterface::getFilterTypes()
    */
-  function testFilterFormatAPI() {
+  public function testFilterFormatAPI() {
     // Test on filtered_html.
     $filtered_html_format = FilterFormat::load('filtered_html');
     $this->assertIdentical(
@@ -249,7 +249,7 @@ function testFilterFormatAPI() {
    * #lazy_builder callbacks.
    * This test focuses solely on those advanced features.
    */
-  function testProcessedTextElement() {
+  public function testProcessedTextElement() {
     FilterFormat::create([
       'format' => 'element_test',
       'name' => 'processed_text element test format',
@@ -327,7 +327,7 @@ function testProcessedTextElement() {
   /**
    * Tests the function of the typed data type.
    */
-  function testTypedDataAPI() {
+  public function testTypedDataAPI() {
     $definition = DataDefinition::create('filter_format');
     $data = \Drupal::typedDataManager()->create($definition);
 
diff --git a/core/modules/filter/tests/src/Kernel/FilterCrudTest.php b/core/modules/filter/tests/src/Kernel/FilterCrudTest.php
index 87ea076ad367df083aaaebb161e42b93292f7049..b73b180bfe047e7a5e9295e55d4f752ac79b4d31 100644
--- a/core/modules/filter/tests/src/Kernel/FilterCrudTest.php
+++ b/core/modules/filter/tests/src/Kernel/FilterCrudTest.php
@@ -22,7 +22,7 @@ class FilterCrudTest extends KernelTestBase {
   /**
    * Tests CRUD operations for text formats and filters.
    */
-  function testTextFormatCrud() {
+  public function testTextFormatCrud() {
     // Add a text format with minimum data only.
     $format = FilterFormat::create([
       'format' => 'empty_format',
@@ -88,7 +88,7 @@ public function testDisableFallbackFormat() {
   /**
    * Verifies that a text format is properly stored.
    */
-  function verifyTextFormat($format) {
+  public function verifyTextFormat($format) {
     $t_args = ['%format' => $format->label()];
     $default_langcode = \Drupal::languageManager()->getDefaultLanguage()->getId();
 
diff --git a/core/modules/filter/tests/src/Kernel/FilterDefaultConfigTest.php b/core/modules/filter/tests/src/Kernel/FilterDefaultConfigTest.php
index eb8106c52555c33b05727585f60b89dad06f2ff7..e16bddade560afa6191d1c8e1cd22e39d53e5de7 100644
--- a/core/modules/filter/tests/src/Kernel/FilterDefaultConfigTest.php
+++ b/core/modules/filter/tests/src/Kernel/FilterDefaultConfigTest.php
@@ -30,7 +30,7 @@ protected function setUp() {
   /**
    * Tests installation of default formats.
    */
-  function testInstallation() {
+  public function testInstallation() {
     // Verify that the format was installed correctly.
     $format = FilterFormat::load('filter_test');
     $this->assertTrue((bool) $format);
@@ -70,7 +70,7 @@ function testInstallation() {
   /**
    * Tests that changes to FilterFormat::$roles do not have an effect.
    */
-  function testUpdateRoles() {
+  public function testUpdateRoles() {
     // Verify role permissions declared in default config.
     $format = FilterFormat::load('filter_test');
     $this->assertEqual(array_keys(filter_get_roles_by_format($format)), [
diff --git a/core/modules/filter/tests/src/Kernel/FilterKernelTest.php b/core/modules/filter/tests/src/Kernel/FilterKernelTest.php
index bbac91615205be5379b44b2520b3d221ad3a92c5..cf72bbee4563cfc4aa1aab31e7f52a916a87d796 100644
--- a/core/modules/filter/tests/src/Kernel/FilterKernelTest.php
+++ b/core/modules/filter/tests/src/Kernel/FilterKernelTest.php
@@ -41,7 +41,7 @@ protected function setUp() {
   /**
    * Tests the align filter.
    */
-  function testAlignFilter() {
+  public function testAlignFilter() {
     $filter = $this->filters['filter_align'];
 
     $test = function($input) use ($filter) {
@@ -96,7 +96,7 @@ function testAlignFilter() {
   /**
    * Tests the caption filter.
    */
-  function testCaptionFilter() {
+  public function testCaptionFilter() {
     /** @var \Drupal\Core\Render\RendererInterface $renderer */
     $renderer = \Drupal::service('renderer');
     $filter = $this->filters['filter_caption'];
@@ -260,7 +260,7 @@ function testCaptionFilter() {
   /**
    * Tests the combination of the align and caption filters.
    */
-  function testAlignAndCaptionFilters() {
+  public function testAlignAndCaptionFilters() {
     /** @var \Drupal\Core\Render\RendererInterface $renderer */
     $renderer = \Drupal::service('renderer');
     $align_filter = $this->filters['filter_align'];
@@ -315,7 +315,7 @@ function testAlignAndCaptionFilters() {
   /**
    * Tests the line break filter.
    */
-  function testLineBreakFilter() {
+  public function testLineBreakFilter() {
     // Get FilterAutoP object.
     $filter = $this->filters['filter_autop'];
 
@@ -403,7 +403,7 @@ function testLineBreakFilter() {
    * @todo Class, id, name and xmlns should be added to disallowed attributes,
    *   or better a whitelist approach should be used for that too.
    */
-  function testHtmlFilter() {
+  public function testHtmlFilter() {
     // Get FilterHtml object.
     $filter = $this->filters['filter_html'];
     $filter->setConfiguration([
@@ -493,7 +493,7 @@ function testHtmlFilter() {
   /**
    * Tests the spam deterrent.
    */
-  function testNoFollowFilter() {
+  public function testNoFollowFilter() {
     // Get FilterHtml object.
     $filter = $this->filters['filter_html'];
     $filter->setConfiguration([
@@ -526,7 +526,7 @@ function testNoFollowFilter() {
   /**
    * Tests the HTML escaping filter.
    */
-  function testHtmlEscapeFilter() {
+  public function testHtmlEscapeFilter() {
     // Get FilterHtmlEscape object.
     $filter = $this->filters['filter_html_escape'];
 
@@ -543,7 +543,7 @@ function testHtmlEscapeFilter() {
   /**
    * Tests the URL filter.
    */
-  function testUrlFilter() {
+  public function testUrlFilter() {
     // Get FilterUrl object.
     $filter = $this->filters['filter_url'];
     $filter->setConfiguration([
@@ -871,7 +871,7 @@ function testUrlFilter() {
    *   );
    *   @endcode
    */
-  function assertFilteredString($filter, $tests) {
+  public function assertFilteredString($filter, $tests) {
     foreach ($tests as $source => $tasks) {
       $result = $filter->process($source, $filter)->getProcessedText();
       foreach ($tasks as $value => $is_expected) {
@@ -918,7 +918,7 @@ function assertFilteredString($filter, $tests) {
    * - Empty HTML tags (BR, IMG).
    * - Mix of absolute and partial URLs, and email addresses in one content.
    */
-  function testUrlFilterContent() {
+  public function testUrlFilterContent() {
     // Get FilterUrl object.
     $filter = $this->filters['filter_url'];
     $filter->setConfiguration([
@@ -939,7 +939,7 @@ function testUrlFilterContent() {
    *
    * @todo This test could really use some validity checking function.
    */
-  function testHtmlCorrectorFilter() {
+  public function testHtmlCorrectorFilter() {
     // Tag closing.
     $f = Html::normalize('<p>text');
     $this->assertEqual($f, '<p>text</p>', 'HTML corrector -- tag closing at the end of input.');
@@ -1146,7 +1146,7 @@ function testHtmlCorrectorFilter() {
    * @return bool
    *   TRUE on pass, FALSE on fail.
    */
-  function assertNormalized($haystack, $needle, $message = '', $group = 'Other') {
+  public function assertNormalized($haystack, $needle, $message = '', $group = 'Other') {
     return $this->assertTrue(strpos(strtolower(Html::decodeEntities($haystack)), $needle) !== FALSE, $message, $group);
   }
 
@@ -1171,7 +1171,7 @@ function assertNormalized($haystack, $needle, $message = '', $group = 'Other') {
    * @return bool
    *   TRUE on pass, FALSE on fail.
    */
-  function assertNoNormalized($haystack, $needle, $message = '', $group = 'Other') {
+  public function assertNoNormalized($haystack, $needle, $message = '', $group = 'Other') {
     return $this->assertTrue(strpos(strtolower(Html::decodeEntities($haystack)), $needle) === FALSE, $message, $group);
   }
 
diff --git a/core/modules/filter/tests/src/Kernel/FilterSettingsTest.php b/core/modules/filter/tests/src/Kernel/FilterSettingsTest.php
index 829840c3194fa108770904da86f97a55bf57a6e9..f77efac85ade5532808500e242490fe6bbdb945d 100644
--- a/core/modules/filter/tests/src/Kernel/FilterSettingsTest.php
+++ b/core/modules/filter/tests/src/Kernel/FilterSettingsTest.php
@@ -22,7 +22,7 @@ class FilterSettingsTest extends KernelTestBase {
   /**
    * Tests explicit and implicit default settings for filters.
    */
-  function testFilterDefaults() {
+  public function testFilterDefaults() {
     $filter_info = $this->container->get('plugin.manager.filter')->getDefinitions();
 
     // Create text format using filter default settings.
diff --git a/core/modules/forum/src/ForumIndexStorage.php b/core/modules/forum/src/ForumIndexStorage.php
index d644ca9fd4164b9864e2af6045d14c02e96ee4a7..79945746c1404e626f3e9cf687bb6e8d85b13d0a 100644
--- a/core/modules/forum/src/ForumIndexStorage.php
+++ b/core/modules/forum/src/ForumIndexStorage.php
@@ -23,7 +23,7 @@ class ForumIndexStorage implements ForumIndexStorageInterface {
    * @param \Drupal\Core\Database\Connection $database
    *   The current database connection.
    */
-  function __construct(Connection $database) {
+  public function __construct(Connection $database) {
     $this->database = $database;
   }
 
diff --git a/core/modules/forum/tests/src/Functional/ForumIndexTest.php b/core/modules/forum/tests/src/Functional/ForumIndexTest.php
index 3fd74b6fce7cfa45a8373c180949faf043682cdf..53c8364db0152a3454ada12e6e7b121459823753 100644
--- a/core/modules/forum/tests/src/Functional/ForumIndexTest.php
+++ b/core/modules/forum/tests/src/Functional/ForumIndexTest.php
@@ -29,7 +29,7 @@ protected function setUp() {
   /**
    * Tests the forum index for published and unpublished nodes.
    */
-  function testForumIndexStatus() {
+  public function testForumIndexStatus() {
     // The forum ID to use.
     $tid = 1;
 
diff --git a/core/modules/forum/tests/src/Functional/ForumNodeAccessTest.php b/core/modules/forum/tests/src/Functional/ForumNodeAccessTest.php
index 83523e681dce260ba3b83ee391add8ec56486da2..fb9da660b36e1d23dfa87f802f81af28c3b87858 100644
--- a/core/modules/forum/tests/src/Functional/ForumNodeAccessTest.php
+++ b/core/modules/forum/tests/src/Functional/ForumNodeAccessTest.php
@@ -32,7 +32,7 @@ protected function setUp() {
    * Adds both active forum topics and new forum topics blocks to the sidebar.
    * Tests to ensure private node/public node access is respected on blocks.
    */
-  function testForumNodeAccess() {
+  public function testForumNodeAccess() {
     // Create some users.
     $access_user = $this->drupalCreateUser(['node test view']);
     $no_access_user = $this->drupalCreateUser();
diff --git a/core/modules/forum/tests/src/Functional/ForumTest.php b/core/modules/forum/tests/src/Functional/ForumTest.php
index 25ecc9df4c5a8cc647f004f3a02fcc5583e1b62c..76823a757cbd629dc6274106626728726db9afae 100644
--- a/core/modules/forum/tests/src/Functional/ForumTest.php
+++ b/core/modules/forum/tests/src/Functional/ForumTest.php
@@ -117,7 +117,7 @@ protected function setUp() {
   /**
    * Tests forum functionality through the admin and user interfaces.
    */
-  function testForum() {
+  public function testForum() {
     //Check that the basic forum install creates a default forum topic
     $this->drupalGet('/forum');
     // Look for the "General discussion" default forum
@@ -251,7 +251,7 @@ function testForum() {
    * Verifies that forum nodes are not created without choosing "forum" from the
    * select list.
    */
-  function testAddOrphanTopic() {
+  public function testAddOrphanTopic() {
     // Must remove forum topics to test creating orphan topics.
     $vid = $this->config('forum.settings')->get('vocabulary');
     $tids = \Drupal::entityQuery('taxonomy_term')
@@ -356,7 +356,7 @@ private function doAdminTests($user) {
   /**
    * Edits the forum taxonomy.
    */
-  function editForumVocabulary() {
+  public function editForumVocabulary() {
     // Backup forum taxonomy.
     $vid = $this->config('forum.settings')->get('vocabulary');
     $original_vocabulary = Vocabulary::load($vid);
@@ -399,7 +399,7 @@ function editForumVocabulary() {
    * @return \Drupal\Core\Database\StatementInterface
    *   The created taxonomy term data.
    */
-  function createForum($type, $parent = 0) {
+  public function createForum($type, $parent = 0) {
     // Generate a random name/description.
     $name = $this->randomMachineName(10);
     $description = $this->randomMachineName(100);
@@ -447,7 +447,7 @@ function createForum($type, $parent = 0) {
    * @param int $tid
    *   The forum ID.
    */
-  function deleteForum($tid) {
+  public function deleteForum($tid) {
     // Delete the forum.
     $this->drupalGet('admin/structure/forum/edit/forum/' . $tid);
     $this->clickLink(t('Delete'));
@@ -483,7 +483,7 @@ private function doBasicTests($user, $admin) {
   /**
    * Tests a forum with a new post displays properly.
    */
-  function testForumWithNewPost() {
+  public function testForumWithNewPost() {
     // Log in as the first user.
     $this->drupalLogin($this->adminUser);
     // Create a forum container.
@@ -528,7 +528,7 @@ function testForumWithNewPost() {
    * @return object
    *   The created topic node.
    */
-  function createForumTopic($forum, $container = FALSE) {
+  public function createForumTopic($forum, $container = FALSE) {
     // Generate a random subject/body.
     $title = $this->randomMachineName(20);
     $body = $this->randomMachineName(200);
diff --git a/core/modules/history/src/Tests/HistoryTest.php b/core/modules/history/src/Tests/HistoryTest.php
index d08d21129444b2a35f2cf1f34a2f2b1e07c0f124..b74ba6b4548b9087c024641838b7ccc27e0550a9 100644
--- a/core/modules/history/src/Tests/HistoryTest.php
+++ b/core/modules/history/src/Tests/HistoryTest.php
@@ -101,7 +101,7 @@ protected function markNodeAsRead($node_id) {
   /**
    * Verifies that the history endpoints work.
    */
-  function testHistory() {
+  public function testHistory() {
     $nid = $this->testNode->id();
 
     // Retrieve "last read" timestamp for test node, for the current user.
diff --git a/core/modules/image/src/Tests/FileMoveTest.php b/core/modules/image/src/Tests/FileMoveTest.php
index ce28a0b372f42bcab6237d89e1b0931e9c1e9a66..d9ce27f75d3049b1a61d2dcaf6706311eac9f9ba 100644
--- a/core/modules/image/src/Tests/FileMoveTest.php
+++ b/core/modules/image/src/Tests/FileMoveTest.php
@@ -23,7 +23,7 @@ class FileMoveTest extends WebTestBase {
   /**
    * Tests moving a randomly generated image.
    */
-  function testNormal() {
+  public function testNormal() {
     // Pick a file for testing.
     $file = File::create((array) current($this->drupalGetTestFiles('image')));
 
diff --git a/core/modules/image/src/Tests/ImageAdminStylesTest.php b/core/modules/image/src/Tests/ImageAdminStylesTest.php
index c8e92d344883ac45e28094444bfa91af38860a72..5313b7fdbbb792e1028269c1d88f8d8917f6887e 100644
--- a/core/modules/image/src/Tests/ImageAdminStylesTest.php
+++ b/core/modules/image/src/Tests/ImageAdminStylesTest.php
@@ -19,7 +19,7 @@ class ImageAdminStylesTest extends ImageFieldTestBase {
   /**
    * Given an image style, generate an image.
    */
-  function createSampleImage(ImageStyleInterface $style) {
+  public function createSampleImage(ImageStyleInterface $style) {
     static $file_path;
 
     // First, we need to make sure we have an image in our testing
@@ -36,7 +36,7 @@ function createSampleImage(ImageStyleInterface $style) {
   /**
    * Count the number of images currently create for a style.
    */
-  function getImageCount(ImageStyleInterface $style) {
+  public function getImageCount(ImageStyleInterface $style) {
     return count(file_scan_directory('public://styles/' . $style->id(), '/.*/'));
   }
 
@@ -44,7 +44,7 @@ function getImageCount(ImageStyleInterface $style) {
    * Test creating an image style with a numeric name and ensuring it can be
    * applied to an image.
    */
-  function testNumericStyleName() {
+  public function testNumericStyleName() {
     $style_name = rand();
     $style_label = $this->randomString();
     $edit = [
@@ -60,7 +60,7 @@ function testNumericStyleName() {
   /**
    * General test to add a style, add/remove/edit effects to it, then delete it.
    */
-  function testStyle() {
+  public function testStyle() {
     $admin_path = 'admin/config/media/image-styles';
 
     // Setup a style to be created and effects to add to it.
@@ -330,7 +330,7 @@ public function testAjaxEnabledEffectForm() {
   /**
    * Test deleting a style and choosing a replacement style.
    */
-  function testStyleReplacement() {
+  public function testStyleReplacement() {
     // Create a new style.
     $style_name = strtolower($this->randomMachineName(10));
     $style_label = $this->randomString();
@@ -392,7 +392,7 @@ function testStyleReplacement() {
   /**
    * Verifies that editing an image effect does not cause it to be duplicated.
    */
-  function testEditEffect() {
+  public function testEditEffect() {
     // Add a scale effect.
     $style_name = 'test_style_effect_edit';
     $this->drupalGet('admin/config/media/image-styles/add');
@@ -465,7 +465,7 @@ public function testFlushUserInterface() {
   /**
    * Tests image style configuration import that does a delete.
    */
-  function testConfigImport() {
+  public function testConfigImport() {
     // Create a new style.
     $style_name = strtolower($this->randomMachineName(10));
     $style_label = $this->randomString();
diff --git a/core/modules/image/src/Tests/ImageDimensionsTest.php b/core/modules/image/src/Tests/ImageDimensionsTest.php
index 365a6aa086e9bc2de969521e666231a59a94b25b..b3e100dd9f5ba28fdb18ae6fb3b4f76478a628f4 100644
--- a/core/modules/image/src/Tests/ImageDimensionsTest.php
+++ b/core/modules/image/src/Tests/ImageDimensionsTest.php
@@ -24,7 +24,7 @@ class ImageDimensionsTest extends WebTestBase {
   /**
    * Test styled image dimensions cumulatively.
    */
-  function testImageDimensions() {
+  public function testImageDimensions() {
     $image_factory = $this->container->get('image.factory');
     // Create a working copy of the file.
     $files = $this->drupalGetTestFiles('image');
diff --git a/core/modules/image/src/Tests/ImageFieldDisplayTest.php b/core/modules/image/src/Tests/ImageFieldDisplayTest.php
index d2b4ffea29a1261370ba0f95dffa5ea77befa0b4..9c105c1434f979ea24d2ff297c39d497d2188675 100644
--- a/core/modules/image/src/Tests/ImageFieldDisplayTest.php
+++ b/core/modules/image/src/Tests/ImageFieldDisplayTest.php
@@ -26,14 +26,14 @@ class ImageFieldDisplayTest extends ImageFieldTestBase {
   /**
    * Test image formatters on node display for public files.
    */
-  function testImageFieldFormattersPublic() {
+  public function testImageFieldFormattersPublic() {
     $this->_testImageFieldFormatters('public');
   }
 
   /**
    * Test image formatters on node display for private files.
    */
-  function testImageFieldFormattersPrivate() {
+  public function testImageFieldFormattersPrivate() {
     // Remove access content permission from anonymous users.
     user_role_change_permissions(RoleInterface::ANONYMOUS_ID, ['access content' => FALSE]);
     $this->_testImageFieldFormatters('private');
@@ -42,7 +42,7 @@ function testImageFieldFormattersPrivate() {
   /**
    * Test image formatters on node display.
    */
-  function _testImageFieldFormatters($scheme) {
+  public function _testImageFieldFormatters($scheme) {
     /** @var \Drupal\Core\Render\RendererInterface $renderer */
     $renderer = $this->container->get('renderer');
     $node_storage = $this->container->get('entity.manager')->getStorage('node');
@@ -217,7 +217,7 @@ function _testImageFieldFormatters($scheme) {
   /**
    * Tests for image field settings.
    */
-  function testImageFieldSettings() {
+  public function testImageFieldSettings() {
     /** @var \Drupal\Core\Render\RendererInterface $renderer */
     $renderer = $this->container->get('renderer');
     $node_storage = $this->container->get('entity.manager')->getStorage('node');
@@ -332,7 +332,7 @@ function testImageFieldSettings() {
   /**
    * Test use of a default image with an image field.
    */
-  function testImageFieldDefaultImage() {
+  public function testImageFieldDefaultImage() {
     /** @var \Drupal\Core\Render\RendererInterface $renderer */
     $renderer = $this->container->get('renderer');
 
diff --git a/core/modules/image/src/Tests/ImageFieldTestBase.php b/core/modules/image/src/Tests/ImageFieldTestBase.php
index ed452786462060e1030ddfac747444f2056e3919..eec7f7bba9cd5bb1279b2b46fb5cdb948fccc7b5 100644
--- a/core/modules/image/src/Tests/ImageFieldTestBase.php
+++ b/core/modules/image/src/Tests/ImageFieldTestBase.php
@@ -65,7 +65,7 @@ protected function setUp() {
    * @param string $type
    *   The type of node to create.
    */
-  function previewNodeImage($image, $field_name, $type) {
+  public function previewNodeImage($image, $field_name, $type) {
     $edit = [
       'title[0][value]' => $this->randomMachineName(),
     ];
@@ -85,7 +85,7 @@ function previewNodeImage($image, $field_name, $type) {
    * @param $alt
    *   The alt text for the image. Use if the field settings require alt text.
    */
-  function uploadNodeImage($image, $field_name, $type, $alt = '') {
+  public function uploadNodeImage($image, $field_name, $type, $alt = '') {
     $edit = [
       'title[0][value]' => $this->randomMachineName(),
     ];
diff --git a/core/modules/image/src/Tests/ImageFieldValidateTest.php b/core/modules/image/src/Tests/ImageFieldValidateTest.php
index 4e8e0c1f1acca611ce9db51f145004e66ae8746d..7e5ee9bae711b02f3d6754adf735acb8f150da2c 100644
--- a/core/modules/image/src/Tests/ImageFieldValidateTest.php
+++ b/core/modules/image/src/Tests/ImageFieldValidateTest.php
@@ -11,7 +11,7 @@ class ImageFieldValidateTest extends ImageFieldTestBase {
   /**
    * Test min/max resolution settings.
    */
-  function testResolution() {
+  public function testResolution() {
     $field_names = [
       0 => strtolower($this->randomMachineName()),
       1 => strtolower($this->randomMachineName()),
@@ -85,7 +85,7 @@ function testResolution() {
   /**
    * Test that required alt/title fields gets validated right.
    */
-  function testRequiredAttributes() {
+  public function testRequiredAttributes() {
     $field_name = strtolower($this->randomMachineName());
     $field_settings = [
       'alt_field' => 1,
diff --git a/core/modules/image/src/Tests/ImageStyleFlushTest.php b/core/modules/image/src/Tests/ImageStyleFlushTest.php
index ad837e88e41c295ee71f6bf6ba4e7aa8d72a99c2..4e8cd2c779e23cfba70b94d9472d93231263420a 100644
--- a/core/modules/image/src/Tests/ImageStyleFlushTest.php
+++ b/core/modules/image/src/Tests/ImageStyleFlushTest.php
@@ -14,7 +14,7 @@ class ImageStyleFlushTest extends ImageFieldTestBase {
   /**
    * Given an image style and a wrapper, generate an image.
    */
-  function createSampleImage($style, $wrapper) {
+  public function createSampleImage($style, $wrapper) {
     static $file;
 
     if (!isset($file)) {
@@ -34,14 +34,14 @@ function createSampleImage($style, $wrapper) {
   /**
    * Count the number of images currently created for a style in a wrapper.
    */
-  function getImageCount($style, $wrapper) {
+  public function getImageCount($style, $wrapper) {
     return count(file_scan_directory($wrapper . '://styles/' . $style->id(), '/.*/'));
   }
 
   /**
    * General test to flush a style.
    */
-  function testFlush() {
+  public function testFlush() {
 
     // Setup a style to be created and effects to add to it.
     $style_name = strtolower($this->randomMachineName(10));
diff --git a/core/modules/image/src/Tests/ImageStylesPathAndUrlTest.php b/core/modules/image/src/Tests/ImageStylesPathAndUrlTest.php
index 28a78cda79af89ac58650244c8bfdaac13d30714..44254c614186cf547b80935889676164e94b67e6 100644
--- a/core/modules/image/src/Tests/ImageStylesPathAndUrlTest.php
+++ b/core/modules/image/src/Tests/ImageStylesPathAndUrlTest.php
@@ -34,7 +34,7 @@ protected function setUp() {
   /**
    * Tests \Drupal\image\ImageStyleInterface::buildUri().
    */
-  function testImageStylePath() {
+  public function testImageStylePath() {
     $scheme = 'public';
     $actual = $this->style->buildUri("$scheme://foo/bar.gif");
     $expected = "$scheme://styles/" . $this->style->id() . "/$scheme/foo/bar.gif";
@@ -48,42 +48,42 @@ function testImageStylePath() {
   /**
    * Tests an image style URL using the "public://" scheme.
    */
-  function testImageStyleUrlAndPathPublic() {
+  public function testImageStyleUrlAndPathPublic() {
     $this->doImageStyleUrlAndPathTests('public');
   }
 
   /**
    * Tests an image style URL using the "private://" scheme.
    */
-  function testImageStyleUrlAndPathPrivate() {
+  public function testImageStyleUrlAndPathPrivate() {
     $this->doImageStyleUrlAndPathTests('private');
   }
 
   /**
    * Tests an image style URL with the "public://" scheme and unclean URLs.
    */
-  function testImageStyleUrlAndPathPublicUnclean() {
+  public function testImageStyleUrlAndPathPublicUnclean() {
     $this->doImageStyleUrlAndPathTests('public', FALSE);
   }
 
   /**
    * Tests an image style URL with the "private://" schema and unclean URLs.
    */
-  function testImageStyleUrlAndPathPrivateUnclean() {
+  public function testImageStyleUrlAndPathPrivateUnclean() {
     $this->doImageStyleUrlAndPathTests('private', FALSE);
   }
 
   /**
    * Tests an image style URL with a file URL that has an extra slash in it.
    */
-  function testImageStyleUrlExtraSlash() {
+  public function testImageStyleUrlExtraSlash() {
     $this->doImageStyleUrlAndPathTests('public', TRUE, TRUE);
   }
 
   /**
    * Tests that an invalid source image returns a 404.
    */
-  function testImageStyleUrlForMissingSourceImage() {
+  public function testImageStyleUrlForMissingSourceImage() {
     $non_existent_uri = 'public://foo.png';
     $generated_url = $this->style->buildUrl($non_existent_uri);
     $this->drupalGet($generated_url);
@@ -93,7 +93,7 @@ function testImageStyleUrlForMissingSourceImage() {
   /**
    * Tests building an image style URL.
    */
-  function doImageStyleUrlAndPathTests($scheme, $clean_url = TRUE, $extra_slash = FALSE) {
+  public function doImageStyleUrlAndPathTests($scheme, $clean_url = TRUE, $extra_slash = FALSE) {
     $this->prepareRequestForGenerator($clean_url);
 
     // Make the default scheme neither "public" nor "private" to verify the
diff --git a/core/modules/image/src/Tests/ImageThemeFunctionTest.php b/core/modules/image/src/Tests/ImageThemeFunctionTest.php
index b5b42ff66242c18be90afac8a0777f2624e4590b..54c5c64a19fdbaa9e21eb183ca18e6236d76dfe8 100644
--- a/core/modules/image/src/Tests/ImageThemeFunctionTest.php
+++ b/core/modules/image/src/Tests/ImageThemeFunctionTest.php
@@ -62,7 +62,7 @@ protected function setUp() {
   /**
    * Tests usage of the image field formatters.
    */
-  function testImageFormatterTheme() {
+  public function testImageFormatterTheme() {
     /** @var \Drupal\Core\Render\RendererInterface $renderer */
     $renderer = $this->container->get('renderer');
 
@@ -124,7 +124,7 @@ function testImageFormatterTheme() {
   /**
    * Tests usage of the image style theme function.
    */
-  function testImageStyleTheme() {
+  public function testImageStyleTheme() {
     /** @var \Drupal\Core\Render\RendererInterface $renderer */
     $renderer = $this->container->get('renderer');
 
@@ -161,7 +161,7 @@ function testImageStyleTheme() {
   /**
    * Tests image alt attribute functionality.
    */
-  function testImageAltFunctionality() {
+  public function testImageAltFunctionality() {
     /** @var \Drupal\Core\Render\RendererInterface $renderer */
     $renderer = $this->container->get('renderer');
 
diff --git a/core/modules/image/src/Tests/QuickEditImageControllerTest.php b/core/modules/image/src/Tests/QuickEditImageControllerTest.php
index 348ee2dd097a28ca1195fd3f4a5772b1988c88d3..870c1bb5d5d30fdc0f4b5c8017ea0dde7a3f0e45 100644
--- a/core/modules/image/src/Tests/QuickEditImageControllerTest.php
+++ b/core/modules/image/src/Tests/QuickEditImageControllerTest.php
@@ -65,7 +65,7 @@ protected function setUp() {
   /**
    * Tests that routes restrict access for un-privileged users.
    */
-  function testAccess() {
+  public function testAccess() {
     // Create an anonymous user.
     $user = $this->createUser();
     $this->drupalLogin($user);
@@ -84,7 +84,7 @@ function testAccess() {
   /**
    * Tests that the field info route returns expected data.
    */
-  function testFieldInfo() {
+  public function testFieldInfo() {
     // Create a test Node.
     $node = $this->drupalCreateNode([
       'type' => 'article',
@@ -100,7 +100,7 @@ function testFieldInfo() {
   /**
    * Tests that uploading a valid image works.
    */
-  function testValidImageUpload() {
+  public function testValidImageUpload() {
     // Create a test Node.
     $node = $this->drupalCreateNode([
       'type' => 'article',
@@ -125,7 +125,7 @@ function testValidImageUpload() {
   /**
    * Tests that uploading a invalid image does not work.
    */
-  function testInvalidUpload() {
+  public function testInvalidUpload() {
     // Create a test Node.
     $node = $this->drupalCreateNode([
       'type' => 'article',
@@ -164,7 +164,7 @@ function testInvalidUpload() {
    * @return mixed
    *   The content returned from the call to $this->curlExec().
    */
-  function uploadImage($image, $nid, $field_name, $langcode) {
+  public function uploadImage($image, $nid, $field_name, $langcode) {
     $filepath = $this->container->get('file_system')->realpath($image->uri);
     $data = [
       'files[image]' => curl_file_create($filepath),
diff --git a/core/modules/image/tests/src/Functional/ImageEffectsTest.php b/core/modules/image/tests/src/Functional/ImageEffectsTest.php
index 6e719d834bf35783f292baf46feb57d2f59901e8..e9cb157abe155953d5821e400a85396aefda2021 100644
--- a/core/modules/image/tests/src/Functional/ImageEffectsTest.php
+++ b/core/modules/image/tests/src/Functional/ImageEffectsTest.php
@@ -34,7 +34,7 @@ protected function setUp() {
   /**
    * Test the image_resize_effect() function.
    */
-  function testResizeEffect() {
+  public function testResizeEffect() {
     $this->assertImageEffect('image_resize', [
       'width' => 1,
       'height' => 2,
@@ -50,7 +50,7 @@ function testResizeEffect() {
   /**
    * Test the image_scale_effect() function.
    */
-  function testScaleEffect() {
+  public function testScaleEffect() {
     // @todo: need to test upscaling.
     $this->assertImageEffect('image_scale', [
       'width' => 10,
@@ -67,7 +67,7 @@ function testScaleEffect() {
   /**
    * Test the image_crop_effect() function.
    */
-  function testCropEffect() {
+  public function testCropEffect() {
     // @todo should test the keyword offsets.
     $this->assertImageEffect('image_crop', [
       'anchor' => 'top-1',
@@ -87,7 +87,7 @@ function testCropEffect() {
   /**
    * Tests the ConvertImageEffect plugin.
    */
-  function testConvertEffect() {
+  public function testConvertEffect() {
     // Test jpeg.
     $this->assertImageEffect('image_convert', [
       'extension' => 'jpeg',
@@ -102,7 +102,7 @@ function testConvertEffect() {
   /**
    * Test the image_scale_and_crop_effect() function.
    */
-  function testScaleAndCropEffect() {
+  public function testScaleAndCropEffect() {
     $this->assertImageEffect('image_scale_and_crop', [
       'width' => 5,
       'height' => 10,
@@ -118,7 +118,7 @@ function testScaleAndCropEffect() {
   /**
    * Test the image_desaturate_effect() function.
    */
-  function testDesaturateEffect() {
+  public function testDesaturateEffect() {
     $this->assertImageEffect('image_desaturate', []);
     $this->assertToolkitOperationsCalled(['desaturate']);
 
@@ -130,7 +130,7 @@ function testDesaturateEffect() {
   /**
    * Test the image_rotate_effect() function.
    */
-  function testRotateEffect() {
+  public function testRotateEffect() {
     // @todo: need to test with 'random' => TRUE
     $this->assertImageEffect('image_rotate', [
       'degrees' => 90,
@@ -147,7 +147,7 @@ function testRotateEffect() {
   /**
    * Test image effect caching.
    */
-  function testImageEffectsCaching() {
+  public function testImageEffectsCaching() {
     $image_effect_definitions_called = &drupal_static('image_module_test_image_effect_info_alter');
 
     // First call should grab a fresh copy of the data.
diff --git a/core/modules/image/tests/src/Functional/ImageFieldTestBase.php b/core/modules/image/tests/src/Functional/ImageFieldTestBase.php
index 0764954b33ed3d89fc27ced74583464ba472bb41..5fa06140407f93a9d7de16184baf2cfcfdbad996 100644
--- a/core/modules/image/tests/src/Functional/ImageFieldTestBase.php
+++ b/core/modules/image/tests/src/Functional/ImageFieldTestBase.php
@@ -62,7 +62,7 @@ protected function setUp() {
    * @param string $type
    *   The type of node to create.
    */
-  function previewNodeImage($image, $field_name, $type) {
+  public function previewNodeImage($image, $field_name, $type) {
     $edit = [
       'title[0][value]' => $this->randomMachineName(),
     ];
@@ -82,7 +82,7 @@ function previewNodeImage($image, $field_name, $type) {
    * @param $alt
    *   The alt text for the image. Use if the field settings require alt text.
    */
-  function uploadNodeImage($image, $field_name, $type, $alt = '') {
+  public function uploadNodeImage($image, $field_name, $type, $alt = '') {
     $edit = [
       'title[0][value]' => $this->randomMachineName(),
     ];
diff --git a/core/modules/image/tests/src/Kernel/ImageFormatterTest.php b/core/modules/image/tests/src/Kernel/ImageFormatterTest.php
index cd8a45b3e93d63ea4b81cf22fc88b77e1006cfcb..f001743509a567f60cff26a0d102041f948c9588 100644
--- a/core/modules/image/tests/src/Kernel/ImageFormatterTest.php
+++ b/core/modules/image/tests/src/Kernel/ImageFormatterTest.php
@@ -84,7 +84,7 @@ protected function setUp() {
   /**
    * Tests the cache tags from image formatters.
    */
-  function testImageFormatterCacheTags() {
+  public function testImageFormatterCacheTags() {
     // Create a test entity with the image field set.
     $entity = EntityTest::create([
       'name' => $this->randomMachineName(),
diff --git a/core/modules/language/src/EventSubscriber/ConfigSubscriber.php b/core/modules/language/src/EventSubscriber/ConfigSubscriber.php
index 103f9128d3937768851bcfe1cea321453b55bd3a..e071406d28d0cfade1511da1aa9f5d54ef170d50 100644
--- a/core/modules/language/src/EventSubscriber/ConfigSubscriber.php
+++ b/core/modules/language/src/EventSubscriber/ConfigSubscriber.php
@@ -140,7 +140,7 @@ public function setPathProcessorLanguage(PathProcessorLanguage $path_processor_l
   /**
    * {@inheritdoc}
    */
-  static function getSubscribedEvents() {
+  public static function getSubscribedEvents() {
     $events[ConfigEvents::SAVE][] = ['onConfigSave', 0];
     return $events;
   }
diff --git a/core/modules/language/src/EventSubscriber/LanguageRequestSubscriber.php b/core/modules/language/src/EventSubscriber/LanguageRequestSubscriber.php
index fd925dd85515c76131b3e102759f05c63e26ac8b..37a6048a6645d084cefa80f3019d3d8099fe44c7 100644
--- a/core/modules/language/src/EventSubscriber/LanguageRequestSubscriber.php
+++ b/core/modules/language/src/EventSubscriber/LanguageRequestSubscriber.php
@@ -89,7 +89,7 @@ public function onKernelRequestLanguage(GetResponseEvent $event) {
    * @return array
    *   An array of event listener definitions.
    */
-  static function getSubscribedEvents() {
+  public static function getSubscribedEvents() {
     $events[KernelEvents::REQUEST][] = ['onKernelRequestLanguage', 255];
 
     return $events;
diff --git a/core/modules/language/src/LanguageNegotiator.php b/core/modules/language/src/LanguageNegotiator.php
index d9d4c5deca847b5c44703fffc423f371a8dd4c67..db558992a4e11b68276849ac8f3d9bfed2873c26 100644
--- a/core/modules/language/src/LanguageNegotiator.php
+++ b/core/modules/language/src/LanguageNegotiator.php
@@ -245,7 +245,7 @@ public function isNegotiationMethodEnabled($method_id, $type = NULL) {
   /**
    * {@inheritdoc}
    */
-  function saveConfiguration($type, $enabled_methods) {
+  public function saveConfiguration($type, $enabled_methods) {
     // As configurable language types might have changed, we reset the cache.
     $this->languageManager->reset();
     $definitions = $this->getNegotiationMethods();
@@ -274,7 +274,7 @@ function saveConfiguration($type, $enabled_methods) {
   /**
    * {@inheritdoc}
    */
-  function purgeConfiguration() {
+  public function purgeConfiguration() {
     // Ensure that we are getting the defined language negotiation information.
     // An invocation of \Drupal\Core\Extension\ModuleInstaller::install() or
     // \Drupal\Core\Extension\ModuleInstaller::uninstall() could invalidate the
@@ -289,7 +289,7 @@ function purgeConfiguration() {
   /**
    * {@inheritdoc}
    */
-  function updateConfiguration(array $types) {
+  public function updateConfiguration(array $types) {
     // Ensure that we are getting the defined language negotiation information.
     // An invocation of \Drupal\Core\Extension\ModuleInstaller::install() or
     // \Drupal\Core\Extension\ModuleInstaller::uninstall() could invalidate the
diff --git a/core/modules/language/src/LanguageNegotiatorInterface.php b/core/modules/language/src/LanguageNegotiatorInterface.php
index 27921696c640c9333bfd336e91d31e3a3bd84922..71f44b51b350a7c0aba2c827fb190c34f6d19c7d 100644
--- a/core/modules/language/src/LanguageNegotiatorInterface.php
+++ b/core/modules/language/src/LanguageNegotiatorInterface.php
@@ -187,12 +187,12 @@ public function isNegotiationMethodEnabled($method_id, $type = NULL);
    * @param int[] $enabled_methods
    *   An array of language negotiation method weights keyed by method ID.
    */
-  function saveConfiguration($type, $enabled_methods);
+  public function saveConfiguration($type, $enabled_methods);
 
   /**
    * Resave the configuration to purge missing negotiation methods.
    */
-  function purgeConfiguration();
+  public function purgeConfiguration();
 
   /**
    * Updates the configuration based on the given language types.
@@ -204,6 +204,6 @@ function purgeConfiguration();
    * @param string[] $types
    *   An array of configurable language types.
    */
-  function updateConfiguration(array $types);
+  public function updateConfiguration(array $types);
 
 }
diff --git a/core/modules/language/src/Tests/LanguageConfigurationTest.php b/core/modules/language/src/Tests/LanguageConfigurationTest.php
index 611b479c4d1162cf06e9bcca0f1e02a7dcbff467..46d5ed74d1203232014863bea3ae3d954484b524 100644
--- a/core/modules/language/src/Tests/LanguageConfigurationTest.php
+++ b/core/modules/language/src/Tests/LanguageConfigurationTest.php
@@ -23,7 +23,7 @@ class LanguageConfigurationTest extends WebTestBase {
   /**
    * Functional tests for adding, editing and deleting languages.
    */
-  function testLanguageConfiguration() {
+  public function testLanguageConfiguration() {
     // Ensure the after installing the language module the weight of the English
     // language is still 0.
     $this->assertEqual(ConfigurableLanguage::load('en')->getWeight(), 0, 'The English language has a weight of 0.');
@@ -148,7 +148,7 @@ function testLanguageConfiguration() {
   /**
    * Functional tests for setting system language weight on adding, editing and deleting languages.
    */
-  function testLanguageConfigurationWeight() {
+  public function testLanguageConfigurationWeight() {
     // User to add and remove language.
     $admin_user = $this->drupalCreateUser(['administer languages', 'access administration pages']);
     $this->drupalLogin($admin_user);
diff --git a/core/modules/language/src/Tests/LanguageListTest.php b/core/modules/language/src/Tests/LanguageListTest.php
index 2ed4962e11099609d864c728dd2dbc34d609188f..641ddc41e084e6fac48573caab807196f662b927 100644
--- a/core/modules/language/src/Tests/LanguageListTest.php
+++ b/core/modules/language/src/Tests/LanguageListTest.php
@@ -24,7 +24,7 @@ class LanguageListTest extends WebTestBase {
   /**
    * Functional tests for adding, editing and deleting languages.
    */
-  function testLanguageList() {
+  public function testLanguageList() {
 
     // User to add and remove language.
     $admin_user = $this->drupalCreateUser(['administer languages', 'access administration pages']);
@@ -186,7 +186,7 @@ function testLanguageList() {
   /**
    * Functional tests for the language states (locked or configurable).
    */
-  function testLanguageStates() {
+  public function testLanguageStates() {
     // Add some languages, and also lock some of them.
     ConfigurableLanguage::create(['label' => $this->randomMachineName(), 'id' => 'l1'])->save();
     ConfigurableLanguage::create(['label' => $this->randomMachineName(), 'id' => 'l2', 'locked' => TRUE])->save();
diff --git a/core/modules/language/src/Tests/LanguageLocaleListTest.php b/core/modules/language/src/Tests/LanguageLocaleListTest.php
index 022a072d1f7a333f59128ada3f0fc811940d874f..5f96d89e5b237e8ec674fca94bfbddc51892be3b 100644
--- a/core/modules/language/src/Tests/LanguageLocaleListTest.php
+++ b/core/modules/language/src/Tests/LanguageLocaleListTest.php
@@ -30,7 +30,7 @@ protected function setUp() {
   /**
    * Tests adding, editing, and deleting languages.
    */
-  function testLanguageLocaleList() {
+  public function testLanguageLocaleList() {
     // User to add and remove language.
     $admin_user = $this->drupalCreateUser(['administer languages', 'access administration pages']);
     $this->drupalLogin($admin_user);
diff --git a/core/modules/language/src/Tests/LanguageSwitchingTest.php b/core/modules/language/src/Tests/LanguageSwitchingTest.php
index 3d04a648224636c0ab62187acde426b0a3365b52..40015210ebff86e0a1f6ed08711d3863f6d75e00 100644
--- a/core/modules/language/src/Tests/LanguageSwitchingTest.php
+++ b/core/modules/language/src/Tests/LanguageSwitchingTest.php
@@ -33,7 +33,7 @@ protected function setUp() {
   /**
    * Functional tests for the language switcher block.
    */
-  function testLanguageBlock() {
+  public function testLanguageBlock() {
     // Add language.
     $edit = [
       'predefined_langcode' => 'fr',
@@ -160,7 +160,7 @@ protected function doTestLanguageBlockAnonymous($block_label) {
   /**
    * Test language switcher links for domain based negotiation.
    */
-  function testLanguageBlockWithDomain() {
+  public function testLanguageBlockWithDomain() {
     // Add the Italian language.
     ConfigurableLanguage::createFromLangcode('it')->save();
 
@@ -222,7 +222,7 @@ function testLanguageBlockWithDomain() {
   /**
    * Test active class on links when switching languages.
    */
-  function testLanguageLinkActiveClass() {
+  public function testLanguageLinkActiveClass() {
     // Add language.
     $edit = [
       'predefined_langcode' => 'fr',
@@ -240,7 +240,7 @@ function testLanguageLinkActiveClass() {
   /**
    * Check the path-admin class, as same as on default language.
    */
-  function testLanguageBodyClass() {
+  public function testLanguageBodyClass() {
     $searched_class = 'path-admin';
 
     // Add language.
diff --git a/core/modules/language/src/Tests/LanguageUILanguageNegotiationTest.php b/core/modules/language/src/Tests/LanguageUILanguageNegotiationTest.php
index 0008186ed10fcd840d97f67373a6c5a9f2494644..3f54cf9bff72dcde0dada2670eff84d5436ba653 100644
--- a/core/modules/language/src/Tests/LanguageUILanguageNegotiationTest.php
+++ b/core/modules/language/src/Tests/LanguageUILanguageNegotiationTest.php
@@ -60,7 +60,7 @@ protected function setUp() {
   /**
    * Tests for language switching by URL path.
    */
-  function testUILanguageNegotiation() {
+  public function testUILanguageNegotiation() {
     // A few languages to switch to.
     // This one is unknown, should get the default lang version.
     $langcode_unknown = 'blah-blah';
@@ -364,7 +364,7 @@ protected function doRunTest($test) {
   /**
    * Test URL language detection when the requested URL has no language.
    */
-  function testUrlLanguageFallback() {
+  public function testUrlLanguageFallback() {
     // Add the Italian language.
     $langcode_browser_fallback = 'it';
     ConfigurableLanguage::createFromLangcode($langcode_browser_fallback)->save();
@@ -416,7 +416,7 @@ function testUrlLanguageFallback() {
   /**
    * Tests URL handling when separate domains are used for multiple languages.
    */
-  function testLanguageDomain() {
+  public function testLanguageDomain() {
     global $base_url;
 
     // Get the current host URI we're running on.
diff --git a/core/modules/language/src/Tests/LanguageUrlRewritingTest.php b/core/modules/language/src/Tests/LanguageUrlRewritingTest.php
index de1b1a36fdc0227be79c0e69164e5bd2f4645f78..65ae64c37b31564e9df5ac2c943d671c15162039 100644
--- a/core/modules/language/src/Tests/LanguageUrlRewritingTest.php
+++ b/core/modules/language/src/Tests/LanguageUrlRewritingTest.php
@@ -54,7 +54,7 @@ protected function setUp() {
   /**
    * Check that non-installed languages are not considered.
    */
-  function testUrlRewritingEdgeCases() {
+  public function testUrlRewritingEdgeCases() {
     // Check URL rewriting with a non-installed language.
     $non_existing = new Language(['id' => $this->randomMachineName()]);
     $this->checkUrl($non_existing, 'Path language is ignored if language is not installed.', 'URL language negotiation does not work with non-installed languages');
@@ -101,7 +101,7 @@ private function checkUrl(LanguageInterface $language, $message1, $message2) {
   /**
    * Check URL rewriting when using a domain name and a non-standard port.
    */
-  function testDomainNameNegotiationPort() {
+  public function testDomainNameNegotiationPort() {
     global $base_url;
     $language_domain = 'example.fr';
     // Get the current host URI we're running on.
diff --git a/core/modules/language/tests/src/Functional/LanguageBrowserDetectionTest.php b/core/modules/language/tests/src/Functional/LanguageBrowserDetectionTest.php
index b32909b9a50cb828af4472584df641ec95e5e955..a63ff451f113743f79e4948c586220741666e5da 100644
--- a/core/modules/language/tests/src/Functional/LanguageBrowserDetectionTest.php
+++ b/core/modules/language/tests/src/Functional/LanguageBrowserDetectionTest.php
@@ -17,7 +17,7 @@ class LanguageBrowserDetectionTest extends BrowserTestBase {
    * Tests for adding, editing and deleting mappings between browser language
    * codes and Drupal language codes.
    */
-  function testUIBrowserLanguageMappings() {
+  public function testUIBrowserLanguageMappings() {
     // User to manage languages.
     $admin_user = $this->drupalCreateUser(['administer languages', 'access administration pages']);
     $this->drupalLogin($admin_user);
diff --git a/core/modules/language/tests/src/Functional/LanguageConfigSchemaTest.php b/core/modules/language/tests/src/Functional/LanguageConfigSchemaTest.php
index 200131a80c8f63a6f1fff06746c64cad0966107a..e19fe53da32e5d6b0e60118bf93cd39670e03803 100644
--- a/core/modules/language/tests/src/Functional/LanguageConfigSchemaTest.php
+++ b/core/modules/language/tests/src/Functional/LanguageConfigSchemaTest.php
@@ -42,7 +42,7 @@ protected function setUp() {
   /**
    * Tests whether the language config schema is valid.
    */
-  function testValidLanguageConfigSchema() {
+  public function testValidLanguageConfigSchema() {
     // Make sure no language configuration available by default.
     $config_data = $this->config('language.settings')->get();
     $this->assertTrue(empty($config_data));
diff --git a/core/modules/language/tests/src/Functional/LanguageListModuleInstallTest.php b/core/modules/language/tests/src/Functional/LanguageListModuleInstallTest.php
index bcd664db9f4e1bc9294bd863d091b2f5a4830aac..013d00d8dbe57d90deebdda20bf296e5535447dd 100644
--- a/core/modules/language/tests/src/Functional/LanguageListModuleInstallTest.php
+++ b/core/modules/language/tests/src/Functional/LanguageListModuleInstallTest.php
@@ -22,7 +22,7 @@ class LanguageListModuleInstallTest extends BrowserTestBase {
   /**
    * Tests enabling Language.
    */
-  function testModuleInstallLanguageList() {
+  public function testModuleInstallLanguageList() {
     // Since LanguageManager::getLanguages() uses static caches we need to do
     // this by enabling the module using the UI.
     $admin_user = $this->drupalCreateUser(['access administration pages', 'administer modules']);
diff --git a/core/modules/language/tests/src/Functional/LanguageNegotiationInfoTest.php b/core/modules/language/tests/src/Functional/LanguageNegotiationInfoTest.php
index ebcd58071864946c3b4b89e8ca96b305a0e9b915..9133a125a2ebd14101fe26d0f867897e37c6ac0a 100644
--- a/core/modules/language/tests/src/Functional/LanguageNegotiationInfoTest.php
+++ b/core/modules/language/tests/src/Functional/LanguageNegotiationInfoTest.php
@@ -61,7 +61,7 @@ protected function stateSet(array $values) {
   /**
    * Tests alterations to language types/negotiation info.
    */
-  function testInfoAlterations() {
+  public function testInfoAlterations() {
     $this->stateSet([
       // Enable language_test type info.
       'language_test.language_types' => TRUE,
diff --git a/core/modules/language/tests/src/Functional/LanguagePathMonolingualTest.php b/core/modules/language/tests/src/Functional/LanguagePathMonolingualTest.php
index 952f748ba17602cc3c814bc809ec73bc42b4532e..17ff3f936df785d47882c1175c444ba1676a5112 100644
--- a/core/modules/language/tests/src/Functional/LanguagePathMonolingualTest.php
+++ b/core/modules/language/tests/src/Functional/LanguagePathMonolingualTest.php
@@ -57,7 +57,7 @@ protected function setUp() {
   /**
    * Verifies that links do not have language prefixes in them.
    */
-  function testPageLinks() {
+  public function testPageLinks() {
     // Navigate to 'admin/config' path.
     $this->drupalGet('admin/config');
 
diff --git a/core/modules/language/tests/src/Kernel/LanguageDependencyInjectionTest.php b/core/modules/language/tests/src/Kernel/LanguageDependencyInjectionTest.php
index d41d19e2feff52da9cc862d8d78452351fc34874..287ab9528882651df7a3ba2a7ef85da14070b2a6 100644
--- a/core/modules/language/tests/src/Kernel/LanguageDependencyInjectionTest.php
+++ b/core/modules/language/tests/src/Kernel/LanguageDependencyInjectionTest.php
@@ -18,7 +18,7 @@ class LanguageDependencyInjectionTest extends LanguageTestBase {
    *
    * @see \Drupal\Core\Language\LanguageInterface
    */
-  function testDependencyInjectedNewLanguage() {
+  public function testDependencyInjectedNewLanguage() {
     $expected = $this->languageManager->getDefaultLanguage();
     $result = $this->languageManager->getCurrentLanguage();
     foreach ($expected as $property => $value) {
@@ -32,7 +32,7 @@ function testDependencyInjectedNewLanguage() {
    *
    * @see \Drupal\Core\Language\Language
    */
-  function testDependencyInjectedNewDefaultLanguage() {
+  public function testDependencyInjectedNewDefaultLanguage() {
     $default_language = ConfigurableLanguage::load(\Drupal::languageManager()->getDefaultLanguage()->getId());
     // Change the language default object to different values.
     ConfigurableLanguage::createFromLangcode('fr')->save();
diff --git a/core/modules/link/src/Tests/LinkFieldTest.php b/core/modules/link/src/Tests/LinkFieldTest.php
index f25066ffb95ee059ef4f15254dd52999ed5f4123..9e2f433e7a66cfc012ed6ebe1022d2c812867282 100644
--- a/core/modules/link/src/Tests/LinkFieldTest.php
+++ b/core/modules/link/src/Tests/LinkFieldTest.php
@@ -52,7 +52,7 @@ protected function setUp() {
   /**
    * Tests link field URL validation.
    */
-  function testURLValidation() {
+  public function testURLValidation() {
     $field_name = Unicode::strtolower($this->randomMachineName());
     // Create a field with settings to validate.
     $this->fieldStorage = FieldStorageConfig::create([
@@ -223,7 +223,7 @@ protected function assertInvalidEntries($field_name, array $invalid_entries) {
   /**
    * Tests the link title settings of a link field.
    */
-  function testLinkTitle() {
+  public function testLinkTitle() {
     $field_name = Unicode::strtolower($this->randomMachineName());
     // Create a field with settings to validate.
     $this->fieldStorage = FieldStorageConfig::create([
@@ -337,7 +337,7 @@ function testLinkTitle() {
   /**
    * Tests the default 'link' formatter.
    */
-  function testLinkFormatter() {
+  public function testLinkFormatter() {
     $field_name = Unicode::strtolower($this->randomMachineName());
     // Create a field with settings to validate.
     $this->fieldStorage = FieldStorageConfig::create([
@@ -492,7 +492,7 @@ function testLinkFormatter() {
    * This test is mostly the same as testLinkFormatter(), but they cannot be
    * merged, since they involve different configuration and output.
    */
-  function testLinkSeparateFormatter() {
+  public function testLinkSeparateFormatter() {
     $field_name = Unicode::strtolower($this->randomMachineName());
     // Create a field with settings to validate.
     $this->fieldStorage = FieldStorageConfig::create([
diff --git a/core/modules/link/tests/src/Functional/LinkFieldUITest.php b/core/modules/link/tests/src/Functional/LinkFieldUITest.php
index c990e6439dc8f87f74f72cf599975f8901f21198..0da393834b7497dc1e9a43b25c28d6a2226d78ca 100644
--- a/core/modules/link/tests/src/Functional/LinkFieldUITest.php
+++ b/core/modules/link/tests/src/Functional/LinkFieldUITest.php
@@ -44,7 +44,7 @@ protected function setUp() {
   /**
    * Tests the link field UI.
    */
-  function testFieldUI() {
+  public function testFieldUI() {
     // Add a content type.
     $type = $this->drupalCreateContentType();
     $type_path = 'admin/structure/types/manage/' . $type->id();
diff --git a/core/modules/locale/src/LocaleProjectStorage.php b/core/modules/locale/src/LocaleProjectStorage.php
index 5b352f2cdda9c66f70ce90f21d771077d8313aa0..05faa17db31e15408fd63d954faebb68ee8b257e 100644
--- a/core/modules/locale/src/LocaleProjectStorage.php
+++ b/core/modules/locale/src/LocaleProjectStorage.php
@@ -36,7 +36,7 @@ class LocaleProjectStorage implements LocaleProjectStorageInterface {
    * @param \Drupal\Core\KeyValueStore\KeyValueFactoryInterface $key_value_factory
    *   The key value store to use.
    */
-  function __construct(KeyValueFactoryInterface $key_value_factory) {
+  public function __construct(KeyValueFactoryInterface $key_value_factory) {
     $this->keyValueStore = $key_value_factory->get('locale.project');
   }
 
diff --git a/core/modules/locale/src/StreamWrapper/TranslationsStream.php b/core/modules/locale/src/StreamWrapper/TranslationsStream.php
index 8a1c1c9fb6433dd42249a41a8c447dfb42e01dfa..e7cb2788e7685a7cda793e784d8b467d7dab502a 100644
--- a/core/modules/locale/src/StreamWrapper/TranslationsStream.php
+++ b/core/modules/locale/src/StreamWrapper/TranslationsStream.php
@@ -36,7 +36,7 @@ public function getDescription() {
   /**
    * {@inheritdoc}
    */
-  function getDirectoryPath() {
+  public function getDirectoryPath() {
     return \Drupal::config('locale.settings')->get('translation.path');
   }
 
@@ -45,7 +45,7 @@ function getDirectoryPath() {
    * @throws \LogicException
    *   PO files URL should not be public.
    */
-  function getExternalUrl() {
+  public function getExternalUrl() {
     throw new \LogicException('PO files URL should not be public.');
   }
 
diff --git a/core/modules/locale/src/Tests/LocaleConfigTranslationImportTest.php b/core/modules/locale/src/Tests/LocaleConfigTranslationImportTest.php
index 9e80c7bce42c1a3fd39c7e1c09df631c607b594b..479a60046bf55fb50a6bbee19c7a1ea8d2dff154 100644
--- a/core/modules/locale/src/Tests/LocaleConfigTranslationImportTest.php
+++ b/core/modules/locale/src/Tests/LocaleConfigTranslationImportTest.php
@@ -130,7 +130,7 @@ public function testConfigTranslationModuleInstall() {
   /**
    * Test removing a string from Locale deletes configuration translations.
    */
-  function testLocaleRemovalAndConfigOverrideDelete() {
+  public function testLocaleRemovalAndConfigOverrideDelete() {
     // Enable the locale module.
     $this->container->get('module_installer')->install(['locale']);
     $this->resetAll();
@@ -167,7 +167,7 @@ function testLocaleRemovalAndConfigOverrideDelete() {
   /**
    * Test removing a string from Locale changes configuration translations.
    */
-  function testLocaleRemovalAndConfigOverridePreserve() {
+  public function testLocaleRemovalAndConfigOverridePreserve() {
     // Enable the locale module.
     $this->container->get('module_installer')->install(['locale']);
     $this->resetAll();
diff --git a/core/modules/locale/src/Tests/LocaleFileSystemFormTest.php b/core/modules/locale/src/Tests/LocaleFileSystemFormTest.php
index e25ec4095f40f4e3219b06f20b6d995eebe0bc6a..3ac296abe27c0484e177aa84d7d0e82be40b83b1 100644
--- a/core/modules/locale/src/Tests/LocaleFileSystemFormTest.php
+++ b/core/modules/locale/src/Tests/LocaleFileSystemFormTest.php
@@ -30,7 +30,7 @@ protected function setUp(){
   /**
    * Tests translation directory settings on the file settings form.
    */
-  function testFileConfigurationPage() {
+  public function testFileConfigurationPage() {
     // By default there should be no setting for the translation directory.
     $this->drupalGet('admin/config/media/file-system');
     $this->assertNoFieldByName('translation_path');
diff --git a/core/modules/locale/tests/src/Functional/LocaleTranslatedSchemaDefinitionTest.php b/core/modules/locale/tests/src/Functional/LocaleTranslatedSchemaDefinitionTest.php
index 7efb73aad6bda0589bc7aefd7c075261fee7b907..39d7c3d53360a7fce2003a42bcd57105b11cc3b3 100644
--- a/core/modules/locale/tests/src/Functional/LocaleTranslatedSchemaDefinitionTest.php
+++ b/core/modules/locale/tests/src/Functional/LocaleTranslatedSchemaDefinitionTest.php
@@ -36,7 +36,7 @@ protected function setUp() {
   /**
    * Tests that translated field descriptions do not affect the update system.
    */
-  function testTranslatedSchemaDefinition() {
+  public function testTranslatedSchemaDefinition() {
     /** @var \Drupal\locale\StringDatabaseStorage $stringStorage */
     $stringStorage = \Drupal::service('locale.storage');
 
@@ -60,7 +60,7 @@ function testTranslatedSchemaDefinition() {
   /**
    * Tests that translations do not affect the update system.
    */
-  function testTranslatedUpdate() {
+  public function testTranslatedUpdate() {
     // Visit the update page to collect any strings that may be translatable.
     $user = $this->drupalCreateUser(['administer software updates']);
     $this->drupalLogin($user);
diff --git a/core/modules/menu_link_content/src/Tests/MenuLinkContentTranslationUITest.php b/core/modules/menu_link_content/src/Tests/MenuLinkContentTranslationUITest.php
index 4aeb637353088a4f4d1be6382e548199b027c86e..b0419563b0413c8a562808c9ee6e17d005bbea37 100644
--- a/core/modules/menu_link_content/src/Tests/MenuLinkContentTranslationUITest.php
+++ b/core/modules/menu_link_content/src/Tests/MenuLinkContentTranslationUITest.php
@@ -79,7 +79,7 @@ public function testTranslationLinkOnMenuEditForm() {
   /**
    * Tests that translation page inherits admin status of edit page.
    */
-  function testTranslationLinkTheme() {
+  public function testTranslationLinkTheme() {
     $this->drupalLogin($this->administrator);
     $entityId = $this->createEntity([], 'en');
 
diff --git a/core/modules/menu_link_content/tests/src/Functional/LinksTest.php b/core/modules/menu_link_content/tests/src/Functional/LinksTest.php
index 14aa4f2d6c2e25a63885b9cd07b0d51f42866d32..5a7121af79a0bf20f4c905aec176ab1c41fc58f3 100644
--- a/core/modules/menu_link_content/tests/src/Functional/LinksTest.php
+++ b/core/modules/menu_link_content/tests/src/Functional/LinksTest.php
@@ -46,7 +46,7 @@ protected function setUp() {
   /**
    * Create a simple hierarchy of links.
    */
-  function createLinkHierarchy($module = 'menu_test') {
+  public function createLinkHierarchy($module = 'menu_test') {
     // First remove all the menu links in the menu.
     $this->menuLinkManager->deleteLinksInMenu('menu_test');
 
@@ -107,7 +107,7 @@ function createLinkHierarchy($module = 'menu_test') {
   /**
    * Assert that at set of links is properly parented.
    */
-  function assertMenuLinkParents($links, $expected_hierarchy) {
+  public function assertMenuLinkParents($links, $expected_hierarchy) {
     foreach ($expected_hierarchy as $id => $parent) {
       /* @var \Drupal\Core\Menu\MenuLinkInterface $menu_link_plugin  */
       $menu_link_plugin = $this->menuLinkManager->createInstance($links[$id]);
@@ -143,7 +143,7 @@ public function testCreateLink() {
   /**
    * Test automatic reparenting of menu links.
    */
-  function testMenuLinkReparenting($module = 'menu_test') {
+  public function testMenuLinkReparenting($module = 'menu_test') {
     // Check the initial hierarchy.
     $links = $this->createLinkHierarchy($module);
 
diff --git a/core/modules/menu_ui/src/Tests/MenuLanguageTest.php b/core/modules/menu_ui/src/Tests/MenuLanguageTest.php
index 856f4088b6e697d164316dea427eaad73e15690b..4c48f05da7231672e728cea14c0c6104f42df010 100644
--- a/core/modules/menu_ui/src/Tests/MenuLanguageTest.php
+++ b/core/modules/menu_ui/src/Tests/MenuLanguageTest.php
@@ -40,7 +40,7 @@ protected function setUp() {
   /**
    * Tests menu language settings and the defaults for menu link items.
    */
-  function testMenuLanguage() {
+  public function testMenuLanguage() {
     // Create a test menu to test the various language-related settings.
     // Machine name has to be lowercase.
     $menu_name = Unicode::strtolower($this->randomMachineName(16));
diff --git a/core/modules/menu_ui/src/Tests/MenuNodeTest.php b/core/modules/menu_ui/src/Tests/MenuNodeTest.php
index 26f6e4f9385f7769152883e7f6366b4c73bdde31..3f1bba06ee86d081c006ff75c8675530a95f305a 100644
--- a/core/modules/menu_ui/src/Tests/MenuNodeTest.php
+++ b/core/modules/menu_ui/src/Tests/MenuNodeTest.php
@@ -54,7 +54,7 @@ protected function setUp() {
   /**
    * Test creating, editing, deleting menu links via node form widget.
    */
-  function testMenuNodeFormWidget() {
+  public function testMenuNodeFormWidget() {
     // Verify that cacheability metadata is bubbled from the menu link tree
     // access checking that is performed when determining the "default parent
     // item" options in menu_ui_form_node_type_form_alter(). The "log out" link
@@ -240,7 +240,7 @@ function testMenuNodeFormWidget() {
   /**
    * Testing correct loading and saving of menu links via node form widget in a multilingual environment.
    */
-  function testMultilingualMenuNodeFormWidget() {
+  public function testMultilingualMenuNodeFormWidget() {
     // Setup languages.
     $langcodes = ['de'];
     foreach ($langcodes as $langcode) {
diff --git a/core/modules/menu_ui/src/Tests/MenuTest.php b/core/modules/menu_ui/src/Tests/MenuTest.php
index c9df569be300efc411185a6d6e0e823b5ef8f778..dde95027bd497d7b0dc33adfec19b547b45309f4 100644
--- a/core/modules/menu_ui/src/Tests/MenuTest.php
+++ b/core/modules/menu_ui/src/Tests/MenuTest.php
@@ -77,7 +77,7 @@ protected function setUp() {
   /**
    * Tests menu functionality using the admin and user interfaces.
    */
-  function testMenu() {
+  public function testMenu() {
     // Log in the user.
     $this->drupalLogin($this->adminUser);
     $this->items = [];
@@ -148,7 +148,7 @@ function testMenu() {
   /**
    * Adds a custom menu using CRUD functions.
    */
-  function addCustomMenuCRUD() {
+  public function addCustomMenuCRUD() {
     // Add a new custom menu.
     $menu_name = substr(hash('sha256', $this->randomMachineName(16)), 0, MENU_MAX_MENU_NAME_LENGTH_UI);
     $label = $this->randomMachineName(16);
@@ -178,7 +178,7 @@ function addCustomMenuCRUD() {
    * @return \Drupal\system\Entity\Menu
    *   The custom menu that has been created.
    */
-  function addCustomMenu() {
+  public function addCustomMenu() {
     // Try adding a menu using a menu_name that is too long.
     $this->drupalGet('admin/structure/menu/add');
     $menu_name = substr(hash('sha256', $this->randomMachineName(16)), 0, MENU_MAX_MENU_NAME_LENGTH_UI + 1);
@@ -231,7 +231,7 @@ function addCustomMenu() {
    * This deletes the custom menu that is stored in $this->menu and performs
    * tests on the menu delete user interface.
    */
-  function deleteCustomMenu() {
+  public function deleteCustomMenu() {
     $menu_name = $this->menu->id();
     $label = $this->menu->label();
 
@@ -257,7 +257,7 @@ function deleteCustomMenu() {
   /**
    * Tests menu functionality.
    */
-  function doMenuTests() {
+  public function doMenuTests() {
     $menu_name = $this->menu->id();
 
     // Test the 'Add link' local action.
@@ -489,7 +489,7 @@ protected function doMenuLinkFormDefaultsTest() {
   /**
    * Adds and removes a menu link with a query string and fragment.
    */
-  function testMenuQueryAndFragment() {
+  public function testMenuQueryAndFragment() {
     $this->drupalLogin($this->adminUser);
 
     // Make a path with query and fragment on.
@@ -521,7 +521,7 @@ function testMenuQueryAndFragment() {
   /**
    * Tests renaming the built-in menu.
    */
-  function testSystemMenuRename() {
+  public function testSystemMenuRename() {
     $this->drupalLogin($this->adminUser);
     $edit = [
       'label' => $this->randomMachineName(16),
@@ -538,7 +538,7 @@ function testSystemMenuRename() {
   /**
    * Tests that menu items pointing to unpublished nodes are editable.
    */
-  function testUnpublishedNodeMenuItem() {
+  public function testUnpublishedNodeMenuItem() {
     $this->drupalLogin($this->drupalCreateUser(['access administration pages', 'administer blocks', 'administer menu', 'create article content', 'bypass node access']));
     // Create an unpublished node.
     $node = $this->drupalCreateNode([
@@ -602,7 +602,7 @@ public function testBlockContextualLinks() {
    * @return \Drupal\menu_link_content\Entity\MenuLinkContent
    *   A menu link entity.
    */
-  function addMenuLink($parent = '', $path = '/', $menu_name = 'tools', $expanded = FALSE, $weight = '0') {
+  public function addMenuLink($parent = '', $path = '/', $menu_name = 'tools', $expanded = FALSE, $weight = '0') {
     // View add menu link page.
     $this->drupalGet("admin/structure/menu/manage/$menu_name/add");
     $this->assertResponse(200);
@@ -635,7 +635,7 @@ function addMenuLink($parent = '', $path = '/', $menu_name = 'tools', $expanded
   /**
    * Attempts to add menu link with invalid path or no access permission.
    */
-  function addInvalidMenuLink() {
+  public function addInvalidMenuLink() {
     foreach (['access' => '/admin/people/permissions'] as $type => $link_path) {
       $edit = [
         'link[0][uri]' => $link_path,
@@ -649,7 +649,7 @@ function addInvalidMenuLink() {
   /**
    * Tests that parent options are limited by depth when adding menu links.
    */
-  function checkInvalidParentMenuLinks() {
+  public function checkInvalidParentMenuLinks() {
     $last_link = NULL;
     $created_links = [];
 
@@ -700,7 +700,7 @@ function checkInvalidParentMenuLinks() {
    * @param object $parent_node
    *   Parent menu link content node.
    */
-  function verifyMenuLink(MenuLinkContent $item, $item_node, MenuLinkContent $parent = NULL, $parent_node = NULL) {
+  public function verifyMenuLink(MenuLinkContent $item, $item_node, MenuLinkContent $parent = NULL, $parent_node = NULL) {
     // View home page.
     $this->drupalGet('');
     $this->assertResponse(200);
@@ -737,7 +737,7 @@ function verifyMenuLink(MenuLinkContent $item, $item_node, MenuLinkContent $pare
    * @param string $menu_name
    *   The menu the menu link will be moved to.
    */
-  function moveMenuLink(MenuLinkContent $item, $parent, $menu_name) {
+  public function moveMenuLink(MenuLinkContent $item, $parent, $menu_name) {
     $mlid = $item->id();
 
     $edit = [
@@ -753,7 +753,7 @@ function moveMenuLink(MenuLinkContent $item, $parent, $menu_name) {
    * @param \Drupal\menu_link_content\Entity\MenuLinkContent $item
    *   Menu link entity.
    */
-  function modifyMenuLink(MenuLinkContent $item) {
+  public function modifyMenuLink(MenuLinkContent $item) {
     $item->title->value = $this->randomMachineName(16);
 
     $mlid = $item->id();
@@ -778,7 +778,7 @@ function modifyMenuLink(MenuLinkContent $item) {
    * @param int $old_weight
    *   Original title for menu link.
    */
-  function resetMenuLink(MenuLinkInterface $menu_link, $old_weight) {
+  public function resetMenuLink(MenuLinkInterface $menu_link, $old_weight) {
     // Reset menu link.
     $this->drupalPostForm("admin/structure/menu/link/{$menu_link->getPluginId()}/reset", [], t('Reset'));
     $this->assertResponse(200);
@@ -795,7 +795,7 @@ function resetMenuLink(MenuLinkInterface $menu_link, $old_weight) {
    * @param \Drupal\menu_link_content\Entity\MenuLinkContent $item
    *   Menu link.
    */
-  function deleteMenuLink(MenuLinkContent $item) {
+  public function deleteMenuLink(MenuLinkContent $item) {
     $mlid = $item->id();
     $title = $item->getTitle();
 
@@ -815,7 +815,7 @@ function deleteMenuLink(MenuLinkContent $item) {
    * @param \Drupal\menu_link_content\Entity\MenuLinkContent $item
    *   Menu link.
    */
-  function toggleMenuLink(MenuLinkContent $item) {
+  public function toggleMenuLink(MenuLinkContent $item) {
     $this->disableMenuLink($item);
 
     // Verify menu link is absent.
@@ -834,7 +834,7 @@ function toggleMenuLink(MenuLinkContent $item) {
    * @param \Drupal\menu_link_content\Entity\MenuLinkContent $item
    *   Menu link.
    */
-  function disableMenuLink(MenuLinkContent $item) {
+  public function disableMenuLink(MenuLinkContent $item) {
     $mlid = $item->id();
     $edit['enabled[value]'] = FALSE;
     $this->drupalPostForm("admin/structure/menu/item/$mlid/edit", $edit, t('Save'));
@@ -850,7 +850,7 @@ function disableMenuLink(MenuLinkContent $item) {
    * @param \Drupal\menu_link_content\Entity\MenuLinkContent $item
    *   Menu link.
    */
-  function enableMenuLink(MenuLinkContent $item) {
+  public function enableMenuLink(MenuLinkContent $item) {
     $mlid = $item->id();
     $edit['enabled[value]'] = TRUE;
     $this->drupalPostForm("admin/structure/menu/item/$mlid/edit", $edit, t('Save'));
diff --git a/core/modules/menu_ui/src/Tests/MenuWebTestBase.php b/core/modules/menu_ui/src/Tests/MenuWebTestBase.php
index bda38ba57170a0a65738473865d973155ed9b344..e0ee98fbf066565d489f8aeac8c9e49135f4ed23 100644
--- a/core/modules/menu_ui/src/Tests/MenuWebTestBase.php
+++ b/core/modules/menu_ui/src/Tests/MenuWebTestBase.php
@@ -24,7 +24,7 @@ abstract class MenuWebTestBase extends WebTestBase {
    * @param array $expected_item
    *   Array containing properties to verify.
    */
-  function assertMenuLink($menu_plugin_id, array $expected_item) {
+  public function assertMenuLink($menu_plugin_id, array $expected_item) {
     // Retrieve menu link.
     /** @var \Drupal\Core\Menu\MenuLinkManagerInterface $menu_link_manager */
     $menu_link_manager = \Drupal::service('plugin.manager.menu.link');
diff --git a/core/modules/menu_ui/tests/src/Functional/MenuLinkReorderTest.php b/core/modules/menu_ui/tests/src/Functional/MenuLinkReorderTest.php
index 163853dc39f8053ea24b1238e1d03e75246bd42e..4d2bba60d055d82620e6494d92243636d7f81a1d 100644
--- a/core/modules/menu_ui/tests/src/Functional/MenuLinkReorderTest.php
+++ b/core/modules/menu_ui/tests/src/Functional/MenuLinkReorderTest.php
@@ -28,7 +28,7 @@ class MenuLinkReorderTest extends BrowserTestBase {
   /**
    * Test creating, editing, deleting menu links via node form widget.
    */
-  function testDefaultMenuLinkReorder() {
+  public function testDefaultMenuLinkReorder() {
 
     // Add the main menu block.
     $this->drupalPlaceBlock('system_menu_block:main');
diff --git a/core/modules/node/src/NodeForm.php b/core/modules/node/src/NodeForm.php
index 9d2ce6d70f6dd07183be33a3f4dd86bdcc354222..203c2e633192babc0e08870dcf36112c412d69b5 100644
--- a/core/modules/node/src/NodeForm.php
+++ b/core/modules/node/src/NodeForm.php
@@ -166,7 +166,7 @@ public function form(array $form, FormStateInterface $form_state) {
    *
    * @see \Drupal\node\NodeForm::form()
    */
-  function updateStatus($entity_type_id, NodeInterface $node, array $form, FormStateInterface $form_state) {
+  public function updateStatus($entity_type_id, NodeInterface $node, array $form, FormStateInterface $form_state) {
     $element = $form_state->getTriggeringElement();
     if (isset($element['#published_status'])) {
       $node->setPublished($element['#published_status']);
diff --git a/core/modules/node/src/Plugin/views/argument/Type.php b/core/modules/node/src/Plugin/views/argument/Type.php
index 641b16344150f9b10771059dd6c90722cf85bf80..760397ab37de5cb1f9bf4129981eb8c7913d0fbf 100644
--- a/core/modules/node/src/Plugin/views/argument/Type.php
+++ b/core/modules/node/src/Plugin/views/argument/Type.php
@@ -63,11 +63,11 @@ public function summaryName($data) {
    * Override the behavior of title(). Get the user friendly version of the
    * node type.
    */
-  function title() {
+  public function title() {
     return $this->node_type($this->argument);
   }
 
-  function node_type($type_name) {
+  public function node_type($type_name) {
     $type = $this->nodeTypeStorage->load($type_name);
     $output = $type ? $type->label() : $this->t('Unknown content type');
     return $output;
diff --git a/core/modules/node/src/Tests/NodeAccessBaseTableTest.php b/core/modules/node/src/Tests/NodeAccessBaseTableTest.php
index ef3ea9092401e6e31cad7b58c429620277aff229..8eb9c9e665cddca6231e3f75bada344e312fa2d4 100644
--- a/core/modules/node/src/Tests/NodeAccessBaseTableTest.php
+++ b/core/modules/node/src/Tests/NodeAccessBaseTableTest.php
@@ -83,7 +83,7 @@ protected function setUp() {
    * - Test that user 4 can view all content created above.
    * - Test that user 4 can view all content on taxonomy listing.
    */
-  function testNodeAccessBasic() {
+  public function testNodeAccessBasic() {
     $num_simple_users = 2;
     $simple_users = [];
 
diff --git a/core/modules/node/src/Tests/NodeAdminTest.php b/core/modules/node/src/Tests/NodeAdminTest.php
index 7357d2330dd0e314cc867a15e13a030921f47612..8bf54cc29445c07ceb87032b60d413437c25affa 100644
--- a/core/modules/node/src/Tests/NodeAdminTest.php
+++ b/core/modules/node/src/Tests/NodeAdminTest.php
@@ -62,7 +62,7 @@ protected function setUp() {
   /**
    * Tests that the table sorting works on the content admin pages.
    */
-  function testContentAdminSort() {
+  public function testContentAdminSort() {
     $this->drupalLogin($this->adminUser);
 
     $changed = REQUEST_TIME;
@@ -110,7 +110,7 @@ function testContentAdminSort() {
    *
    * @see TaxonomyNodeFilterTestCase
    */
-  function testContentAdminPages() {
+  public function testContentAdminPages() {
     $this->drupalLogin($this->adminUser);
 
     // Use an explicit changed time to ensure the expected order in the content
diff --git a/core/modules/node/src/Tests/NodeEntityViewModeAlterTest.php b/core/modules/node/src/Tests/NodeEntityViewModeAlterTest.php
index 79baf9bb772c7060e688b753a2555ebf30cb7940..901887b86cc43de18d702cc90ed0c6c43d793af8 100644
--- a/core/modules/node/src/Tests/NodeEntityViewModeAlterTest.php
+++ b/core/modules/node/src/Tests/NodeEntityViewModeAlterTest.php
@@ -19,7 +19,7 @@ class NodeEntityViewModeAlterTest extends NodeTestBase {
   /**
    * Create a "Basic page" node and verify its consistency in the database.
    */
-  function testNodeViewModeChange() {
+  public function testNodeViewModeChange() {
     $web_user = $this->drupalCreateUser(['create page content', 'edit own page content']);
     $this->drupalLogin($web_user);
 
diff --git a/core/modules/node/src/Tests/NodeFieldMultilingualTest.php b/core/modules/node/src/Tests/NodeFieldMultilingualTest.php
index ff01deed294dd715191ddcd73cc80dec05073c58..edd01b2d002ba3dc7b4ce045b089874af557efe3 100644
--- a/core/modules/node/src/Tests/NodeFieldMultilingualTest.php
+++ b/core/modules/node/src/Tests/NodeFieldMultilingualTest.php
@@ -55,7 +55,7 @@ protected function setUp() {
   /**
    * Tests whether field languages are correctly set through the node form.
    */
-  function testMultilingualNodeForm() {
+  public function testMultilingualNodeForm() {
     // Create "Basic page" content.
     $langcode = language_get_default_langcode('node', 'page');
     $title_key = 'title[0][value]';
@@ -100,7 +100,7 @@ function testMultilingualNodeForm() {
   /**
    * Tests multilingual field display settings.
    */
-  function testMultilingualDisplaySettings() {
+  public function testMultilingualDisplaySettings() {
     // Create "Basic page" content.
     $title_key = 'title[0][value]';
     $title_value = $this->randomMachineName(8);
diff --git a/core/modules/node/src/Tests/NodeFormButtonsTest.php b/core/modules/node/src/Tests/NodeFormButtonsTest.php
index 9f98007cb9d0c04626f4ad541ee3f632b4bceb7f..ed2bb8f7a4f442b27e54744dd32feb622e50f81c 100644
--- a/core/modules/node/src/Tests/NodeFormButtonsTest.php
+++ b/core/modules/node/src/Tests/NodeFormButtonsTest.php
@@ -37,7 +37,7 @@ protected function setUp() {
   /**
    * Tests that the right buttons are displayed for saving nodes.
    */
-  function testNodeFormButtons() {
+  public function testNodeFormButtons() {
     $node_storage = $this->container->get('entity.manager')->getStorage('node');
     // Log in as administrative user.
     $this->drupalLogin($this->adminUser);
diff --git a/core/modules/node/src/Tests/NodeQueryAlterTest.php b/core/modules/node/src/Tests/NodeQueryAlterTest.php
index ad63d6bc574293f974e08ee65d50ecb08393f449..c502d6c9ed8f766c8152e3f95469ce1c4e104d96 100644
--- a/core/modules/node/src/Tests/NodeQueryAlterTest.php
+++ b/core/modules/node/src/Tests/NodeQueryAlterTest.php
@@ -50,7 +50,7 @@ protected function setUp() {
    * Verifies that a non-standard table alias can be used, and that a user with
    * node access can view the nodes.
    */
-  function testNodeQueryAlterLowLevelWithAccess() {
+  public function testNodeQueryAlterLowLevelWithAccess() {
     // User with access should be able to view 4 nodes.
     try {
       $query = db_select('node', 'mytab')
@@ -91,7 +91,7 @@ public function testNodeQueryAlterWithRevisions() {
    * Verifies that a non-standard table alias can be used, and that a user
    * without node access cannot view the nodes.
    */
-  function testNodeQueryAlterLowLevelNoAccess() {
+  public function testNodeQueryAlterLowLevelNoAccess() {
     // User without access should be able to view 0 nodes.
     try {
       $query = db_select('node', 'mytab')
@@ -114,7 +114,7 @@ function testNodeQueryAlterLowLevelNoAccess() {
    * Verifies that a non-standard table alias can be used, and that a user with
    * view-only node access cannot edit the nodes.
    */
-  function testNodeQueryAlterLowLevelEditAccess() {
+  public function testNodeQueryAlterLowLevelEditAccess() {
     // User with view-only access should not be able to edit nodes.
     try {
       $query = db_select('node', 'mytab')
@@ -142,7 +142,7 @@ function testNodeQueryAlterLowLevelEditAccess() {
    * add a record to {node_access} paired with a corresponding privilege in
    * hook_node_grants().
    */
-  function testNodeQueryAlterOverride() {
+  public function testNodeQueryAlterOverride() {
     $record = [
       'nid' => 0,
       'gid' => 0,
diff --git a/core/modules/node/src/Tests/NodeRevisionPermissionsTest.php b/core/modules/node/src/Tests/NodeRevisionPermissionsTest.php
index 6f1409dcaa2dc54460529801f78d8bfabbd3e5b8..93f21fee55dfb5f795342e6db62db3639bccbb37 100644
--- a/core/modules/node/src/Tests/NodeRevisionPermissionsTest.php
+++ b/core/modules/node/src/Tests/NodeRevisionPermissionsTest.php
@@ -61,7 +61,7 @@ protected function setUp() {
   /**
    * Tests general revision access permissions.
    */
-  function testNodeRevisionAccessAnyType() {
+  public function testNodeRevisionAccessAnyType() {
     // Create three users, one with each revision permission.
     foreach ($this->map as $op => $permission) {
       // Create the user.
@@ -119,7 +119,7 @@ function testNodeRevisionAccessAnyType() {
   /**
    * Tests revision access permissions for a specific content type.
    */
-  function testNodeRevisionAccessPerType() {
+  public function testNodeRevisionAccessPerType() {
     // Create three users, one with each revision permission.
     foreach ($this->typeMap as $op => $permission) {
       // Create the user.
diff --git a/core/modules/node/src/Tests/NodeRevisionsTest.php b/core/modules/node/src/Tests/NodeRevisionsTest.php
index 19798631f5b7a8534b6de905bf4e3327ab0f36fa..c50110d695321d91fdbc85e2e9398383515c955a 100644
--- a/core/modules/node/src/Tests/NodeRevisionsTest.php
+++ b/core/modules/node/src/Tests/NodeRevisionsTest.php
@@ -128,7 +128,7 @@ protected function setUp() {
   /**
    * Checks node revision related operations.
    */
-  function testRevisions() {
+  public function testRevisions() {
     $node_storage = $this->container->get('entity.manager')->getStorage('node');
     $nodes = $this->nodes;
     $logs = $this->revisionLogs;
@@ -297,7 +297,7 @@ function testRevisions() {
   /**
    * Checks that revisions are correctly saved without log messages.
    */
-  function testNodeRevisionWithoutLogMessage() {
+  public function testNodeRevisionWithoutLogMessage() {
     $node_storage = $this->container->get('entity.manager')->getStorage('node');
     // Create a node with an initial log message.
     $revision_log = $this->randomMachineName(10);
diff --git a/core/modules/node/src/Tests/NodeTestBase.php b/core/modules/node/src/Tests/NodeTestBase.php
index d5a349de1aa152f362d3d19d40c993c87f3335d8..2dcaba5b38fc88b860fe05780bcd76130b3a2e54 100644
--- a/core/modules/node/src/Tests/NodeTestBase.php
+++ b/core/modules/node/src/Tests/NodeTestBase.php
@@ -59,7 +59,7 @@ protected function setUp() {
    * @param \Drupal\Core\Session\AccountInterface $account
    *   The user account for which to check access.
    */
-  function assertNodeAccess(array $ops, NodeInterface $node, AccountInterface $account) {
+  public function assertNodeAccess(array $ops, NodeInterface $node, AccountInterface $account) {
     foreach ($ops as $op => $result) {
       $this->assertEqual($result, $this->accessHandler->access($node, $op, $account), $this->nodeAccessAssertMessage($op, $result, $node->language()->getId()));
     }
@@ -78,7 +78,7 @@ function assertNodeAccess(array $ops, NodeInterface $node, AccountInterface $acc
    *   (optional) The language code indicating which translation of the node
    *   to check. If NULL, the untranslated (fallback) access is checked.
    */
-  function assertNodeCreateAccess($bundle, $result, AccountInterface $account, $langcode = NULL) {
+  public function assertNodeCreateAccess($bundle, $result, AccountInterface $account, $langcode = NULL) {
     $this->assertEqual($result, $this->accessHandler->createAccess($bundle, $account, [
       'langcode' => $langcode,
     ]), $this->nodeAccessAssertMessage('create', $result, $langcode));
@@ -99,7 +99,7 @@ function assertNodeCreateAccess($bundle, $result, AccountInterface $account, $la
    *   An assert message string which contains information in plain English
    *   about the node access permission test that was performed.
    */
-  function nodeAccessAssertMessage($operation, $result, $langcode = NULL) {
+  public function nodeAccessAssertMessage($operation, $result, $langcode = NULL) {
     return format_string(
       'Node access returns @result with operation %op, language code %langcode.',
       [
diff --git a/core/modules/node/src/Tests/NodeTitleTest.php b/core/modules/node/src/Tests/NodeTitleTest.php
index 986be79438039e26dc15f5ac08715ff55862a996..f9e74bcdcf5b5bb19318cfc849fad371b8a2a92a 100644
--- a/core/modules/node/src/Tests/NodeTitleTest.php
+++ b/core/modules/node/src/Tests/NodeTitleTest.php
@@ -43,7 +43,7 @@ protected function setUp() {
   /**
    * Creates one node and tests if the node title has the correct value.
    */
-  function testNodeTitle() {
+  public function testNodeTitle() {
     // Create "Basic page" content with title.
     // Add the node to the frontpage so we can test if teaser links are
     // clickable.
diff --git a/core/modules/node/src/Tests/NodeTitleXSSTest.php b/core/modules/node/src/Tests/NodeTitleXSSTest.php
index 7b4890eb0c5c31000d35082d8e331a92269849e8..c5bbe95d622ae8fc18badc5bd41b9af3663c05c0 100644
--- a/core/modules/node/src/Tests/NodeTitleXSSTest.php
+++ b/core/modules/node/src/Tests/NodeTitleXSSTest.php
@@ -14,7 +14,7 @@ class NodeTitleXSSTest extends NodeTestBase {
   /**
    * Tests XSS functionality with a node entity.
    */
-  function testNodeTitleXSS() {
+  public function testNodeTitleXSS() {
     // Prepare a user to do the stuff.
     $web_user = $this->drupalCreateUser(['create page content', 'edit any page content']);
     $this->drupalLogin($web_user);
diff --git a/core/modules/node/src/Tests/NodeTypeTest.php b/core/modules/node/src/Tests/NodeTypeTest.php
index bc4285276ca5212dd366f0c94485da404697d129..d7ebf2bc7a6d9596891633162244f8e1b1b0c293 100644
--- a/core/modules/node/src/Tests/NodeTypeTest.php
+++ b/core/modules/node/src/Tests/NodeTypeTest.php
@@ -25,7 +25,7 @@ class NodeTypeTest extends NodeTestBase {
    *
    * Load available node types and validate the returned data.
    */
-  function testNodeTypeGetFunctions() {
+  public function testNodeTypeGetFunctions() {
     $node_types = NodeType::loadMultiple();
     $node_names = node_type_get_names();
 
@@ -42,7 +42,7 @@ function testNodeTypeGetFunctions() {
   /**
    * Tests creating a content type programmatically and via a form.
    */
-  function testNodeTypeCreation() {
+  public function testNodeTypeCreation() {
     // Create a content type programmatically.
     $type = $this->drupalCreateContentType();
 
@@ -83,7 +83,7 @@ function testNodeTypeCreation() {
   /**
    * Tests editing a node type using the UI.
    */
-  function testNodeTypeEditing() {
+  public function testNodeTypeEditing() {
     $web_user = $this->drupalCreateUser(['bypass node access', 'administer content types', 'administer node fields']);
     $this->drupalLogin($web_user);
 
@@ -142,7 +142,7 @@ function testNodeTypeEditing() {
   /**
    * Tests deleting a content type that still has content.
    */
-  function testNodeTypeDeletion() {
+  public function testNodeTypeDeletion() {
     // Create a content type programmatically.
     $type = $this->drupalCreateContentType();
 
diff --git a/core/modules/node/src/Tests/PagePreviewTest.php b/core/modules/node/src/Tests/PagePreviewTest.php
index aa4bcdb7aefabe83df9c75b50da61aea0d1b8285..37b00d3b482f27d0168e01e991b936fd570b4e5a 100644
--- a/core/modules/node/src/Tests/PagePreviewTest.php
+++ b/core/modules/node/src/Tests/PagePreviewTest.php
@@ -158,7 +158,7 @@ protected function setUp() {
   /**
    * Checks the node preview functionality.
    */
-  function testPagePreview() {
+  public function testPagePreview() {
     $title_key = 'title[0][value]';
     $body_key = 'body[0][value]';
     $term_key = $this->fieldName . '[target_id]';
@@ -394,7 +394,7 @@ function testPagePreview() {
   /**
    * Checks the node preview functionality, when using revisions.
    */
-  function testPagePreviewWithRevisions() {
+  public function testPagePreviewWithRevisions() {
     $title_key = 'title[0][value]';
     $body_key = 'body[0][value]';
     $term_key = $this->fieldName . '[target_id]';
diff --git a/core/modules/node/src/Tests/Views/NodeFieldFilterTest.php b/core/modules/node/src/Tests/Views/NodeFieldFilterTest.php
index 048c7a905ee466e5da5a7994eb17eebb31ee7962..86ff676c5039ee80d74ead4a553e49798296f8d0 100644
--- a/core/modules/node/src/Tests/Views/NodeFieldFilterTest.php
+++ b/core/modules/node/src/Tests/Views/NodeFieldFilterTest.php
@@ -30,7 +30,7 @@ class NodeFieldFilterTest extends NodeTestBase {
    */
   public $nodeTitles = [];
 
-  function setUp() {
+  public function setUp() {
     parent::setUp();
 
     // Create Page content type.
diff --git a/core/modules/node/tests/src/Functional/MultiStepNodeFormBasicOptionsTest.php b/core/modules/node/tests/src/Functional/MultiStepNodeFormBasicOptionsTest.php
index 2712c0cbff7202c319e9fe080821aa0abe997099..46b803ec63726672d891f8b6ef767e3b7feff29e 100644
--- a/core/modules/node/tests/src/Functional/MultiStepNodeFormBasicOptionsTest.php
+++ b/core/modules/node/tests/src/Functional/MultiStepNodeFormBasicOptionsTest.php
@@ -22,7 +22,7 @@ class MultiStepNodeFormBasicOptionsTest extends NodeTestBase {
   /**
    * Tests changing the default values of basic options to ensure they persist.
    */
-  function testMultiStepNodeFormBasicOptions() {
+  public function testMultiStepNodeFormBasicOptions() {
     // Prepare a user to create the node.
     $web_user = $this->drupalCreateUser(['administer nodes', 'create page content']);
     $this->drupalLogin($web_user);
diff --git a/core/modules/node/tests/src/Functional/NodeAccessFieldTest.php b/core/modules/node/tests/src/Functional/NodeAccessFieldTest.php
index af14546fdc913abf2e4638ccf66cd8d2d6980d51..082f288c688947f9381e3a82846792fc4b63a5a5 100644
--- a/core/modules/node/tests/src/Functional/NodeAccessFieldTest.php
+++ b/core/modules/node/tests/src/Functional/NodeAccessFieldTest.php
@@ -72,7 +72,7 @@ protected function setUp() {
   /**
    * Tests administering fields when node access is restricted.
    */
-  function testNodeAccessAdministerField() {
+  public function testNodeAccessAdministerField() {
     // Create a page node.
     $fieldData = [];
     $value = $fieldData[0]['value'] = $this->randomMachineName();
diff --git a/core/modules/node/tests/src/Functional/NodeAccessLanguageAwareCombinationTest.php b/core/modules/node/tests/src/Functional/NodeAccessLanguageAwareCombinationTest.php
index ff4d1a248af14ecafcf6edfa74eb1b6986fe8918..e388afcbcb4be4b4ec31d00e23466db3f11b8ae4 100644
--- a/core/modules/node/tests/src/Functional/NodeAccessLanguageAwareCombinationTest.php
+++ b/core/modules/node/tests/src/Functional/NodeAccessLanguageAwareCombinationTest.php
@@ -192,7 +192,7 @@ protected function setUp() {
   /**
    * Tests node access and node access queries with multiple node languages.
    */
-  function testNodeAccessLanguageAwareCombination() {
+  public function testNodeAccessLanguageAwareCombination() {
 
     $expected_node_access = ['view' => TRUE, 'update' => FALSE, 'delete' => FALSE];
     $expected_node_access_no_access = ['view' => FALSE, 'update' => FALSE, 'delete' => FALSE];
diff --git a/core/modules/node/tests/src/Functional/NodeAccessLanguageAwareTest.php b/core/modules/node/tests/src/Functional/NodeAccessLanguageAwareTest.php
index 9338e5de6a467d4bd21ef51d6ee459dfad70f55c..48f9dfac36c3f309b7a1c5f25d3d728310c606fc 100644
--- a/core/modules/node/tests/src/Functional/NodeAccessLanguageAwareTest.php
+++ b/core/modules/node/tests/src/Functional/NodeAccessLanguageAwareTest.php
@@ -148,7 +148,7 @@ protected function setUp() {
   /**
    * Tests node access and node access queries with multiple node languages.
    */
-  function testNodeAccessLanguageAware() {
+  public function testNodeAccessLanguageAware() {
     // The node_access_test_language module only grants view access.
     $expected_node_access = ['view' => TRUE, 'update' => FALSE, 'delete' => FALSE];
     $expected_node_access_no_access = ['view' => FALSE, 'update' => FALSE, 'delete' => FALSE];
diff --git a/core/modules/node/tests/src/Functional/NodeAccessLanguageTest.php b/core/modules/node/tests/src/Functional/NodeAccessLanguageTest.php
index 2c9bcc3a74b02e618f4913dc7fc57602603cdbfd..1af5660fe52f004a4f0dcf5a712c0765b0833334 100644
--- a/core/modules/node/tests/src/Functional/NodeAccessLanguageTest.php
+++ b/core/modules/node/tests/src/Functional/NodeAccessLanguageTest.php
@@ -42,7 +42,7 @@ protected function setUp() {
   /**
    * Tests node access with multiple node languages and no private nodes.
    */
-  function testNodeAccess() {
+  public function testNodeAccess() {
     $web_user = $this->drupalCreateUser(['access content']);
 
     $expected_node_access = ['view' => TRUE, 'update' => FALSE, 'delete' => FALSE];
@@ -112,7 +112,7 @@ function testNodeAccess() {
   /**
    * Tests node access with multiple node languages and private nodes.
    */
-  function testNodeAccessPrivate() {
+  public function testNodeAccessPrivate() {
     $web_user = $this->drupalCreateUser(['access content']);
     $expected_node_access = ['view' => TRUE, 'update' => FALSE, 'delete' => FALSE];
     $expected_node_access_no_access = ['view' => FALSE, 'update' => FALSE, 'delete' => FALSE];
@@ -175,7 +175,7 @@ function testNodeAccessPrivate() {
   /**
    * Tests db_select() with a 'node_access' tag and langcode metadata.
    */
-  function testNodeAccessQueryTag() {
+  public function testNodeAccessQueryTag() {
     // Create a normal authenticated user.
     $web_user = $this->drupalCreateUser(['access content']);
 
diff --git a/core/modules/node/tests/src/Functional/NodeAccessMenuLinkTest.php b/core/modules/node/tests/src/Functional/NodeAccessMenuLinkTest.php
index ce6326d54b9b2ea1e1417497c5ca63a424d74b49..6c5bcd4ed0fd459167cd9054fce4a9771585cff5 100644
--- a/core/modules/node/tests/src/Functional/NodeAccessMenuLinkTest.php
+++ b/core/modules/node/tests/src/Functional/NodeAccessMenuLinkTest.php
@@ -42,7 +42,7 @@ protected function setUp() {
   /**
    * SA-CORE-2015-003: Tests menu links to nodes when node access is restricted.
    */
-  function testNodeAccessMenuLink() {
+  public function testNodeAccessMenuLink() {
 
     $menu_link_title = $this->randomString();
 
diff --git a/core/modules/node/tests/src/Functional/NodeAccessRecordsTest.php b/core/modules/node/tests/src/Functional/NodeAccessRecordsTest.php
index 13ec1117053c8908a83793e89abe024781f0a714..259ed83efbe14353c0649a108eb56111e3a102a1 100644
--- a/core/modules/node/tests/src/Functional/NodeAccessRecordsTest.php
+++ b/core/modules/node/tests/src/Functional/NodeAccessRecordsTest.php
@@ -21,7 +21,7 @@ class NodeAccessRecordsTest extends NodeTestBase {
   /**
    * Creates a node and tests the creation of node access rules.
    */
-  function testNodeAccessRecords() {
+  public function testNodeAccessRecords() {
     // Create an article node.
     $node1 = $this->drupalCreateNode(['type' => 'article']);
     $this->assertTrue(Node::load($node1->id()), 'Article node created.');
diff --git a/core/modules/node/tests/src/Functional/NodeCreationTest.php b/core/modules/node/tests/src/Functional/NodeCreationTest.php
index 8f5fb3500cd0b07b0b24fcc65a952b18599afda7..4d24901e58bdbdf5f6173c44d38c2ea435c39118 100644
--- a/core/modules/node/tests/src/Functional/NodeCreationTest.php
+++ b/core/modules/node/tests/src/Functional/NodeCreationTest.php
@@ -33,7 +33,7 @@ protected function setUp() {
   /**
    * Creates a "Basic page" node and verifies its consistency in the database.
    */
-  function testNodeCreation() {
+  public function testNodeCreation() {
     $node_type_storage = \Drupal::entityManager()->getStorage('node_type');
 
     // Test /node/add page with only one content type.
@@ -83,7 +83,7 @@ function testNodeCreation() {
   /**
    * Verifies that a transaction rolls back the failed creation.
    */
-  function testFailedPageCreation() {
+  public function testFailedPageCreation() {
     // Create a node.
     $edit = [
       'uid'      => $this->loggedInUser->id(),
@@ -126,7 +126,7 @@ function testFailedPageCreation() {
   /**
    * Creates an unpublished node and confirms correct redirect behavior.
    */
-  function testUnpublishedNodeCreation() {
+  public function testUnpublishedNodeCreation() {
     // Set the front page to the test page.
     $this->config('system.site')->set('page.front', '/test-page')->save();
 
@@ -178,7 +178,7 @@ public function testAuthorAutocomplete() {
   /**
    * Check node/add when no node types exist.
    */
-  function testNodeAddWithoutContentTypes() {
+  public function testNodeAddWithoutContentTypes() {
     $this->drupalGet('node/add');
     $this->assertResponse(200);
     $this->assertNoLinkByHref('/admin/structure/types/add');
diff --git a/core/modules/node/tests/src/Functional/NodeLoadMultipleTest.php b/core/modules/node/tests/src/Functional/NodeLoadMultipleTest.php
index b5d991bcd0a4797d936790f6770ad5853bad4173..2da5d1bbeb59919b98d54143e9818581bd5afeed 100644
--- a/core/modules/node/tests/src/Functional/NodeLoadMultipleTest.php
+++ b/core/modules/node/tests/src/Functional/NodeLoadMultipleTest.php
@@ -27,7 +27,7 @@ protected function setUp() {
   /**
    * Creates four nodes and ensures that they are loaded correctly.
    */
-  function testNodeMultipleLoad() {
+  public function testNodeMultipleLoad() {
     $node1 = $this->drupalCreateNode(['type' => 'article', 'promote' => 1]);
     $node2 = $this->drupalCreateNode(['type' => 'article', 'promote' => 1]);
     $node3 = $this->drupalCreateNode(['type' => 'article', 'promote' => 0]);
diff --git a/core/modules/node/tests/src/Functional/NodePostSettingsTest.php b/core/modules/node/tests/src/Functional/NodePostSettingsTest.php
index 9699261562854e6ae606cd75b6de0b168d77a8c8..4716b30067ff9ed8b33af72cd1fff38708daabbb 100644
--- a/core/modules/node/tests/src/Functional/NodePostSettingsTest.php
+++ b/core/modules/node/tests/src/Functional/NodePostSettingsTest.php
@@ -20,7 +20,7 @@ protected function setUp() {
   /**
    * Confirms "Basic page" content type and post information is on a new node.
    */
-  function testPagePostInfo() {
+  public function testPagePostInfo() {
 
     // Set "Basic page" content type to display post information.
     $edit = [];
diff --git a/core/modules/node/tests/src/Functional/NodeRSSContentTest.php b/core/modules/node/tests/src/Functional/NodeRSSContentTest.php
index 2d154e29cffc8865cfaa38448d10d59f9047fc64..0efa336adecb8d71cf4b74986cc4e920b58efc4a 100644
--- a/core/modules/node/tests/src/Functional/NodeRSSContentTest.php
+++ b/core/modules/node/tests/src/Functional/NodeRSSContentTest.php
@@ -35,7 +35,7 @@ protected function setUp() {
   /**
    * Ensures that a new node includes the custom data when added to an RSS feed.
    */
-  function testNodeRSSContent() {
+  public function testNodeRSSContent() {
     // Create a node.
     $node = $this->drupalCreateNode(['type' => 'article', 'promote' => 1]);
 
diff --git a/core/modules/node/tests/src/Functional/NodeRevisionsAllTest.php b/core/modules/node/tests/src/Functional/NodeRevisionsAllTest.php
index 85d33cd684c3475f69cefdab205d2cba1424668d..d826a49b46e57a0cb335f84bd3037508e79fd06d 100644
--- a/core/modules/node/tests/src/Functional/NodeRevisionsAllTest.php
+++ b/core/modules/node/tests/src/Functional/NodeRevisionsAllTest.php
@@ -80,7 +80,7 @@ protected function createNodeRevision(NodeInterface $node) {
   /**
    * Checks node revision operations.
    */
-  function testRevisions() {
+  public function testRevisions() {
     $node_storage = $this->container->get('entity.manager')->getStorage('node');
     $nodes = $this->nodes;
     $logs = $this->revisionLogs;
diff --git a/core/modules/node/tests/src/Functional/NodeRevisionsUiBypassAccessTest.php b/core/modules/node/tests/src/Functional/NodeRevisionsUiBypassAccessTest.php
index d1cbfb80d9f8a8c0f694ceeefebce4c910fcbd66..a3a575d77e24eb7c2cde91c8555f410aa36789ef 100644
--- a/core/modules/node/tests/src/Functional/NodeRevisionsUiBypassAccessTest.php
+++ b/core/modules/node/tests/src/Functional/NodeRevisionsUiBypassAccessTest.php
@@ -46,7 +46,7 @@ protected function setUp() {
   /**
    * Checks that the Revision tab is displayed correctly.
    */
-  function testDisplayRevisionTab() {
+  public function testDisplayRevisionTab() {
     $this->drupalPlaceBlock('local_tasks_block');
 
     $this->drupalLogin($this->editor);
diff --git a/core/modules/node/tests/src/Functional/NodeRevisionsUiTest.php b/core/modules/node/tests/src/Functional/NodeRevisionsUiTest.php
index 443f75f748876c30783fec16ad6b209496ffc528..cc364cda299516f5298fd3b4a92e63898802fa63 100644
--- a/core/modules/node/tests/src/Functional/NodeRevisionsUiTest.php
+++ b/core/modules/node/tests/src/Functional/NodeRevisionsUiTest.php
@@ -36,7 +36,7 @@ protected function setUp() {
   /**
    * Checks that unchecking 'Create new revision' works when editing a node.
    */
-  function testNodeFormSaveWithoutRevision() {
+  public function testNodeFormSaveWithoutRevision() {
     $this->drupalLogin($this->editor);
     $node_storage = $this->container->get('entity.manager')->getStorage('node');
 
diff --git a/core/modules/node/tests/src/Functional/NodeSaveTest.php b/core/modules/node/tests/src/Functional/NodeSaveTest.php
index 9f57a5e8ae611dd43d388831ee22587a1ad26c31..ced995714218e4a9a1bb9e848045d3220a85becb 100644
--- a/core/modules/node/tests/src/Functional/NodeSaveTest.php
+++ b/core/modules/node/tests/src/Functional/NodeSaveTest.php
@@ -42,7 +42,7 @@ protected function setUp() {
    *  - save the content
    *  - check if node exists
    */
-  function testImport() {
+  public function testImport() {
     // Node ID must be a number that is not in the database.
     $nids = \Drupal::entityManager()->getStorage('node')->getQuery()
       ->sort('nid', 'DESC')
@@ -76,7 +76,7 @@ function testImport() {
   /**
    * Verifies accuracy of the "created" and "changed" timestamp functionality.
    */
-  function testTimestamps() {
+  public function testTimestamps() {
     // Use the default timestamps.
     $edit = [
       'uid' => $this->webUser->id(),
@@ -137,7 +137,7 @@ function testTimestamps() {
    * This test determines changes in hook_ENTITY_TYPE_presave() and verifies
    * that the static node load cache is cleared upon save.
    */
-  function testDeterminingChanges() {
+  public function testDeterminingChanges() {
     // Initial creation.
     $node = Node::create([
       'uid' => $this->webUser->id(),
@@ -172,7 +172,7 @@ function testDeterminingChanges() {
    *
    * @see node_test_node_insert()
    */
-  function testNodeSaveOnInsert() {
+  public function testNodeSaveOnInsert() {
     // node_test_node_insert() triggers a save on insert if the title equals
     // 'new'.
     $node = $this->drupalCreateNode(['title' => 'new']);
diff --git a/core/modules/node/tests/src/Functional/NodeTemplateSuggestionsTest.php b/core/modules/node/tests/src/Functional/NodeTemplateSuggestionsTest.php
index 7b99338b967ded133eaec9e5ab5592976e24de55..dcadf934ded18cb7b1e38f26a29150680b2e087a 100644
--- a/core/modules/node/tests/src/Functional/NodeTemplateSuggestionsTest.php
+++ b/core/modules/node/tests/src/Functional/NodeTemplateSuggestionsTest.php
@@ -12,7 +12,7 @@ class NodeTemplateSuggestionsTest extends NodeTestBase {
   /**
    * Tests if template_preprocess_node() generates the correct suggestions.
    */
-  function testNodeThemeHookSuggestions() {
+  public function testNodeThemeHookSuggestions() {
     // Create node to be rendered.
     $node = $this->drupalCreateNode();
     $view_mode = 'full';
diff --git a/core/modules/node/tests/src/Functional/NodeTestBase.php b/core/modules/node/tests/src/Functional/NodeTestBase.php
index 2341b9eeb614bb2dd7fab3aab681a5c749c0d9cb..2ef0d73c50c3ad1107beab8251df62f177cabfa7 100644
--- a/core/modules/node/tests/src/Functional/NodeTestBase.php
+++ b/core/modules/node/tests/src/Functional/NodeTestBase.php
@@ -56,7 +56,7 @@ protected function setUp() {
    * @param \Drupal\Core\Session\AccountInterface $account
    *   The user account for which to check access.
    */
-  function assertNodeAccess(array $ops, NodeInterface $node, AccountInterface $account) {
+  public function assertNodeAccess(array $ops, NodeInterface $node, AccountInterface $account) {
     foreach ($ops as $op => $result) {
       $this->assertEqual($result, $this->accessHandler->access($node, $op, $account), $this->nodeAccessAssertMessage($op, $result, $node->language()->getId()));
     }
@@ -75,7 +75,7 @@ function assertNodeAccess(array $ops, NodeInterface $node, AccountInterface $acc
    *   (optional) The language code indicating which translation of the node
    *   to check. If NULL, the untranslated (fallback) access is checked.
    */
-  function assertNodeCreateAccess($bundle, $result, AccountInterface $account, $langcode = NULL) {
+  public function assertNodeCreateAccess($bundle, $result, AccountInterface $account, $langcode = NULL) {
     $this->assertEqual($result, $this->accessHandler->createAccess($bundle, $account, [
       'langcode' => $langcode,
     ]), $this->nodeAccessAssertMessage('create', $result, $langcode));
@@ -96,7 +96,7 @@ function assertNodeCreateAccess($bundle, $result, AccountInterface $account, $la
    *   An assert message string which contains information in plain English
    *   about the node access permission test that was performed.
    */
-  function nodeAccessAssertMessage($operation, $result, $langcode = NULL) {
+  public function nodeAccessAssertMessage($operation, $result, $langcode = NULL) {
     return format_string(
       'Node access returns @result with operation %op, language code %langcode.',
       [
diff --git a/core/modules/node/tests/src/Functional/NodeTypeInitialLanguageTest.php b/core/modules/node/tests/src/Functional/NodeTypeInitialLanguageTest.php
index 3295e2b20b1e4ed27878fe4754734d38638dfdc8..9c442fd5dadebf4aba200b87ea91bda68a133e52 100644
--- a/core/modules/node/tests/src/Functional/NodeTypeInitialLanguageTest.php
+++ b/core/modules/node/tests/src/Functional/NodeTypeInitialLanguageTest.php
@@ -31,7 +31,7 @@ protected function setUp() {
    * The default initial language must be the site's default, and the language
    * locked option must be on.
    */
-  function testNodeTypeInitialLanguageDefaults() {
+  public function testNodeTypeInitialLanguageDefaults() {
     $this->drupalGet('admin/structure/types/manage/article');
     $this->assertOptionSelected('edit-language-configuration-langcode', LanguageInterface::LANGCODE_SITE_DEFAULT, 'The default initial language is the site default.');
     $this->assertNoFieldChecked('edit-language-configuration-language-alterable', 'Language selector is hidden by default.');
@@ -89,7 +89,7 @@ function testNodeTypeInitialLanguageDefaults() {
   /**
    * Tests language field visibility features.
    */
-  function testLanguageFieldVisibility() {
+  public function testLanguageFieldVisibility() {
     // Creates a node to test Language field visibility feature.
     $edit = [
       'title[0][value]' => $this->randomMachineName(8),
diff --git a/core/modules/node/tests/src/Functional/PageViewTest.php b/core/modules/node/tests/src/Functional/PageViewTest.php
index 1c6231f7d2896e521e1b1fe93e0d1be5af2ab2a2..9f7e41402c9c8087af5fd4b264c72ffa0b432a55 100644
--- a/core/modules/node/tests/src/Functional/PageViewTest.php
+++ b/core/modules/node/tests/src/Functional/PageViewTest.php
@@ -13,7 +13,7 @@ class PageViewTest extends NodeTestBase {
   /**
    * Tests an anonymous and unpermissioned user attempting to edit the node.
    */
-  function testPageView() {
+  public function testPageView() {
     // Create a node to view.
     $node = $this->drupalCreateNode();
     $this->assertTrue(Node::load($node->id()), 'Node created.');
diff --git a/core/modules/node/tests/src/Kernel/NodeConditionTest.php b/core/modules/node/tests/src/Kernel/NodeConditionTest.php
index 5bf7c731db82d19bfd7770525fe8a6ca4d6936cf..a30867cb8b4213b55b5ddc472c90549723792446 100644
--- a/core/modules/node/tests/src/Kernel/NodeConditionTest.php
+++ b/core/modules/node/tests/src/Kernel/NodeConditionTest.php
@@ -30,7 +30,7 @@ protected function setUp() {
   /**
    * Tests conditions.
    */
-  function testConditions() {
+  public function testConditions() {
     $manager = $this->container->get('plugin.manager.condition', $this->container->get('container.namespaces'));
     $this->createUser();
 
diff --git a/core/modules/node/tests/src/Kernel/NodeFieldAccessTest.php b/core/modules/node/tests/src/Kernel/NodeFieldAccessTest.php
index f57768e48df10e8846c8595499f1bb108e066e29..ae66dca02018683141489650bea46ffd8e831ecc 100644
--- a/core/modules/node/tests/src/Kernel/NodeFieldAccessTest.php
+++ b/core/modules/node/tests/src/Kernel/NodeFieldAccessTest.php
@@ -44,7 +44,7 @@ class NodeFieldAccessTest extends EntityKernelTestBase {
   /**
    * Test permissions on nodes status field.
    */
-  function testAccessToAdministrativeFields() {
+  public function testAccessToAdministrativeFields() {
 
     // Create the page node type with revisions disabled.
     $page = NodeType::create([
diff --git a/core/modules/node/tests/src/Kernel/NodeTokenReplaceTest.php b/core/modules/node/tests/src/Kernel/NodeTokenReplaceTest.php
index 829bf4d4f075253023bf5e3969f50a362d491b61..dd39b6d26d34f29aea3deafd19458d0eb5fd8ecb 100644
--- a/core/modules/node/tests/src/Kernel/NodeTokenReplaceTest.php
+++ b/core/modules/node/tests/src/Kernel/NodeTokenReplaceTest.php
@@ -39,7 +39,7 @@ protected function setUp() {
   /**
    * Creates a node, then tests the tokens generated from it.
    */
-  function testNodeTokenReplacement() {
+  public function testNodeTokenReplacement() {
     $url_options = [
       'absolute' => TRUE,
       'language' => $this->interfaceLanguage,
diff --git a/core/modules/options/src/Tests/OptionsDynamicValuesValidationTest.php b/core/modules/options/src/Tests/OptionsDynamicValuesValidationTest.php
index 0ad479b8fa6fbfee396749bef2742ab1f21c4ae6..a7d7f3fe1821007e9eed524f8e7c8d0afb84546e 100644
--- a/core/modules/options/src/Tests/OptionsDynamicValuesValidationTest.php
+++ b/core/modules/options/src/Tests/OptionsDynamicValuesValidationTest.php
@@ -11,7 +11,7 @@ class OptionsDynamicValuesValidationTest extends OptionsDynamicValuesTestBase {
   /**
    * Test that allowed values function gets the entity.
    */
-  function testDynamicAllowedValues() {
+  public function testDynamicAllowedValues() {
     // Verify that validation passes against every value we had.
     foreach ($this->test as $key => $value) {
       $this->entity->test_options->value = $value;
diff --git a/core/modules/options/src/Tests/OptionsFieldUITest.php b/core/modules/options/src/Tests/OptionsFieldUITest.php
index 76e076e5867a87decca9251ae2d06f136f6e3319..1ba4cddfdb80d51f0a068a9239be47f465aae625 100644
--- a/core/modules/options/src/Tests/OptionsFieldUITest.php
+++ b/core/modules/options/src/Tests/OptionsFieldUITest.php
@@ -64,7 +64,7 @@ protected function setUp() {
   /**
    * Options (integer) : test 'allowed values' input.
    */
-  function testOptionsAllowedValuesInteger() {
+  public function testOptionsAllowedValuesInteger() {
     $this->fieldName = 'field_options_integer';
     $this->createOptionsField('list_integer');
 
@@ -120,7 +120,7 @@ function testOptionsAllowedValuesInteger() {
   /**
    * Options (float) : test 'allowed values' input.
    */
-  function testOptionsAllowedValuesFloat() {
+  public function testOptionsAllowedValuesFloat() {
     $this->fieldName = 'field_options_float';
     $this->createOptionsField('list_float');
 
@@ -180,7 +180,7 @@ function testOptionsAllowedValuesFloat() {
   /**
    * Options (text) : test 'allowed values' input.
    */
-  function testOptionsAllowedValuesText() {
+  public function testOptionsAllowedValuesText() {
     $this->fieldName = 'field_options_text';
     $this->createOptionsField('list_string');
 
@@ -245,7 +245,7 @@ function testOptionsAllowedValuesText() {
   /**
    * Options (text) : test 'trimmed values' input.
    */
-  function testOptionsTrimmedValuesText() {
+  public function testOptionsTrimmedValuesText() {
     $this->fieldName = 'field_options_trimmed_text';
     $this->createOptionsField('list_string');
 
@@ -291,7 +291,7 @@ protected function createOptionsField($type) {
    * @param $message
    *   Message to display.
    */
-  function assertAllowedValuesInput($input_string, $result, $message) {
+  public function assertAllowedValuesInput($input_string, $result, $message) {
     $edit = ['settings[allowed_values]' => $input_string];
     $this->drupalPostForm($this->adminPath, $edit, t('Save field settings'));
     $this->assertNoRaw('&amp;lt;', 'The page does not have double escaped HTML tags.');
@@ -308,7 +308,7 @@ function assertAllowedValuesInput($input_string, $result, $message) {
   /**
    * Tests normal and key formatter display on node display.
    */
-  function testNodeDisplay() {
+  public function testNodeDisplay() {
     $this->fieldName = strtolower($this->randomMachineName());
     $this->createOptionsField('list_integer');
     $node = $this->drupalCreateNode(['type' => $this->type]);
diff --git a/core/modules/options/src/Tests/OptionsSelectDynamicValuesTest.php b/core/modules/options/src/Tests/OptionsSelectDynamicValuesTest.php
index 72c0d55fdc6e13d0c019c6188e649cd19e190c79..e526da398c9856ace4b53ab8c0468a0e6e99a618 100644
--- a/core/modules/options/src/Tests/OptionsSelectDynamicValuesTest.php
+++ b/core/modules/options/src/Tests/OptionsSelectDynamicValuesTest.php
@@ -11,7 +11,7 @@ class OptionsSelectDynamicValuesTest extends OptionsDynamicValuesTestBase {
   /**
    * Tests the 'options_select' widget (single select).
    */
-  function testSelectListDynamic() {
+  public function testSelectListDynamic() {
     // Create an entity.
     $this->entity->save();
 
diff --git a/core/modules/options/src/Tests/OptionsWidgetsTest.php b/core/modules/options/src/Tests/OptionsWidgetsTest.php
index 8a907c20603e7424149e2a6b5ca50c6dd3f8a652..48f9c1a1d770ec58804bca01911da0c3472a7d0a 100644
--- a/core/modules/options/src/Tests/OptionsWidgetsTest.php
+++ b/core/modules/options/src/Tests/OptionsWidgetsTest.php
@@ -84,7 +84,7 @@ protected function setUp() {
   /**
    * Tests the 'options_buttons' widget (single select).
    */
-  function testRadioButtons() {
+  public function testRadioButtons() {
     // Create an instance of the 'single value' field.
     $field = FieldConfig::create([
       'field_storage' => $this->card1,
@@ -141,7 +141,7 @@ function testRadioButtons() {
   /**
    * Tests the 'options_buttons' widget (multiple select).
    */
-  function testCheckBoxes() {
+  public function testCheckBoxes() {
     // Create an instance of the 'multiple values' field.
     $field = FieldConfig::create([
       'field_storage' => $this->card2,
@@ -230,7 +230,7 @@ function testCheckBoxes() {
   /**
    * Tests the 'options_select' widget (single select).
    */
-  function testSelectListSingle() {
+  public function testSelectListSingle() {
     // Create an instance of the 'single value' field.
     $field = FieldConfig::create([
       'field_storage' => $this->card1,
@@ -330,7 +330,7 @@ function testSelectListSingle() {
   /**
    * Tests the 'options_select' widget (multiple select).
    */
-  function testSelectListMultiple() {
+  public function testSelectListMultiple() {
     // Create an instance of the 'multiple values' field.
     $field = FieldConfig::create([
       'field_storage' => $this->card2,
@@ -451,7 +451,7 @@ function testSelectListMultiple() {
   /**
    * Tests the 'options_select' and 'options_button' widget for empty value.
    */
-  function testEmptyValue() {
+  public function testEmptyValue() {
     // Create an instance of the 'single value' field.
     $field = FieldConfig::create([
       'field_storage' => $this->card1,
diff --git a/core/modules/options/tests/src/Kernel/OptionsFieldTest.php b/core/modules/options/tests/src/Kernel/OptionsFieldTest.php
index d3912a29ecd77c62d98e3d0ba0d9c0f62341a9f1..401d6bc1da3ddad920088d6408457a7441f1796b 100644
--- a/core/modules/options/tests/src/Kernel/OptionsFieldTest.php
+++ b/core/modules/options/tests/src/Kernel/OptionsFieldTest.php
@@ -24,7 +24,7 @@ class OptionsFieldTest extends OptionsFieldUnitTestBase {
   /**
    * Test that allowed values can be updated.
    */
-  function testUpdateAllowedValues() {
+  public function testUpdateAllowedValues() {
     // All three options appear.
     $entity = EntityTest::create();
     $form = \Drupal::service('entity.form_builder')->getForm($entity);
diff --git a/core/modules/page_cache/src/Tests/PageCacheTagsIntegrationTest.php b/core/modules/page_cache/src/Tests/PageCacheTagsIntegrationTest.php
index c3aeb84a7622f101d1c2345a9355ed98474ff78d..6ec8a29cf6ca96b488b67b331cc4928c2034edda 100644
--- a/core/modules/page_cache/src/Tests/PageCacheTagsIntegrationTest.php
+++ b/core/modules/page_cache/src/Tests/PageCacheTagsIntegrationTest.php
@@ -36,7 +36,7 @@ protected function setUp() {
   /**
    * Test that cache tags are properly bubbled up to the page level.
    */
-  function testPageCacheTags() {
+  public function testPageCacheTags() {
     // Create two nodes.
     $author_1 = $this->drupalCreateUser();
     $node_1 = $this->drupalCreateNode([
diff --git a/core/modules/page_cache/src/Tests/PageCacheTest.php b/core/modules/page_cache/src/Tests/PageCacheTest.php
index aec0451120a98b6c46c574275e77ae427f75d1ba..c1ee8548e7c7bbb0da8850150be9a5c695383a42 100644
--- a/core/modules/page_cache/src/Tests/PageCacheTest.php
+++ b/core/modules/page_cache/src/Tests/PageCacheTest.php
@@ -44,7 +44,7 @@ protected function setUp() {
    * Since tag based invalidation works, we know that our tag properly
    * persisted.
    */
-  function testPageCacheTags() {
+  public function testPageCacheTags() {
     $config = $this->config('system.performance');
     $config->set('cache.page.max_age', 300);
     $config->save();
@@ -78,7 +78,7 @@ function testPageCacheTags() {
   /**
    * Test that the page cache doesn't depend on cacheability headers.
    */
-  function testPageCacheTagsIndependentFromCacheabilityHeaders() {
+  public function testPageCacheTagsIndependentFromCacheabilityHeaders() {
     $this->setHttpResponseDebugCacheabilityHeaders(FALSE);
 
     $path = 'system-test/cache_tags_page';
@@ -111,7 +111,7 @@ function testPageCacheTagsIndependentFromCacheabilityHeaders() {
    * Tests support for different cache items with different request formats
    * specified via a query parameter.
    */
-  function testQueryParameterFormatRequests() {
+  public function testQueryParameterFormatRequests() {
     $config = $this->config('system.performance');
     $config->set('cache.page.max_age', 300);
     $config->save();
@@ -175,7 +175,7 @@ function testQueryParameterFormatRequests() {
   /**
    * Tests support of requests with If-Modified-Since and If-None-Match headers.
    */
-  function testConditionalRequests() {
+  public function testConditionalRequests() {
     $config = $this->config('system.performance');
     $config->set('cache.page.max_age', 300);
     $config->save();
@@ -219,7 +219,7 @@ function testConditionalRequests() {
   /**
    * Tests cache headers.
    */
-  function testPageCache() {
+  public function testPageCache() {
     $config = $this->config('system.performance');
     $config->set('cache.page.max_age', 300);
     $config->set('response.gzip', 1);
@@ -332,7 +332,7 @@ public function testPageCacheAnonymousRolePermissions() {
   /**
    * Tests the 4xx-response cache tag is added and invalidated.
    */
-  function testPageCacheAnonymous403404() {
+  public function testPageCacheAnonymous403404() {
     $admin_url = Url::fromRoute('system.admin');
     $invalid_url = 'foo/does_not_exist';
     $tests = [
diff --git a/core/modules/path/src/Tests/PathTaxonomyTermTest.php b/core/modules/path/src/Tests/PathTaxonomyTermTest.php
index b6a853e97a6bf2584677f6f238e3a7889ca21af9..663e3f6746f2bcecf3fd6255eff5e7118ee8beae 100644
--- a/core/modules/path/src/Tests/PathTaxonomyTermTest.php
+++ b/core/modules/path/src/Tests/PathTaxonomyTermTest.php
@@ -36,7 +36,7 @@ protected function setUp() {
   /**
    * Tests alias functionality through the admin interfaces.
    */
-  function testTermAlias() {
+  public function testTermAlias() {
     // Create a term in the default 'Tags' vocabulary with URL alias.
     $vocabulary = Vocabulary::load('tags');
     $description = $this->randomMachineName();
diff --git a/core/modules/path/tests/src/Functional/PathAliasTest.php b/core/modules/path/tests/src/Functional/PathAliasTest.php
index 9684aa95ffccd5ea3072570340554cae8f66580c..a63ad3d7d73ecdc65abb39b5f544e107b2c3aa23 100644
--- a/core/modules/path/tests/src/Functional/PathAliasTest.php
+++ b/core/modules/path/tests/src/Functional/PathAliasTest.php
@@ -32,7 +32,7 @@ protected function setUp() {
   /**
    * Tests the path cache.
    */
-  function testPathCache() {
+  public function testPathCache() {
     // Create test node.
     $node1 = $this->drupalCreateNode();
 
@@ -65,7 +65,7 @@ function testPathCache() {
   /**
    * Tests alias functionality through the admin interfaces.
    */
-  function testAdminAlias() {
+  public function testAdminAlias() {
     // Create test node.
     $node1 = $this->drupalCreateNode();
 
@@ -224,7 +224,7 @@ function testAdminAlias() {
   /**
    * Tests alias functionality through the node interfaces.
    */
-  function testNodeAlias() {
+  public function testNodeAlias() {
     // Create test node.
     $node1 = $this->drupalCreateNode();
 
@@ -337,14 +337,14 @@ function testNodeAlias() {
    * @return int
    *   Integer representing the path ID.
    */
-  function getPID($alias) {
+  public function getPID($alias) {
     return db_query("SELECT pid FROM {url_alias} WHERE alias = :alias", [':alias' => $alias])->fetchField();
   }
 
   /**
    * Tests that duplicate aliases fail validation.
    */
-  function testDuplicateNodeAlias() {
+  public function testDuplicateNodeAlias() {
     // Create one node with a random alias.
     $node_one = $this->drupalCreateNode();
     $edit = [];
diff --git a/core/modules/path/tests/src/Functional/PathLanguageTest.php b/core/modules/path/tests/src/Functional/PathLanguageTest.php
index cd56557ea79995a51b558db12cf962e41a65345b..8e41edeaeefc839dcc64012986d5886f1941a735 100644
--- a/core/modules/path/tests/src/Functional/PathLanguageTest.php
+++ b/core/modules/path/tests/src/Functional/PathLanguageTest.php
@@ -71,7 +71,7 @@ protected function setUp() {
   /**
    * Test alias functionality through the admin interfaces.
    */
-  function testAliasTranslation() {
+  public function testAliasTranslation() {
     $node_storage = $this->container->get('entity.manager')->getStorage('node');
     $english_node = $this->drupalCreateNode(['type' => 'page', 'langcode' => 'en']);
     $english_alias = $this->randomMachineName();
diff --git a/core/modules/path/tests/src/Functional/PathLanguageUiTest.php b/core/modules/path/tests/src/Functional/PathLanguageUiTest.php
index 9bad3485e28ea406805964a1c2683f17d618befb..c2e3276246fa1270448a7c88d10fd578824d7c40 100644
--- a/core/modules/path/tests/src/Functional/PathLanguageUiTest.php
+++ b/core/modules/path/tests/src/Functional/PathLanguageUiTest.php
@@ -37,7 +37,7 @@ protected function setUp() {
   /**
    * Tests that a language-neutral URL alias works.
    */
-  function testLanguageNeutralUrl() {
+  public function testLanguageNeutralUrl() {
     $name = $this->randomMachineName(8);
     $edit = [];
     $edit['source'] = '/admin/config/search/path';
@@ -51,7 +51,7 @@ function testLanguageNeutralUrl() {
   /**
    * Tests that a default language URL alias works.
    */
-  function testDefaultLanguageUrl() {
+  public function testDefaultLanguageUrl() {
     $name = $this->randomMachineName(8);
     $edit = [];
     $edit['source'] = '/admin/config/search/path';
@@ -66,7 +66,7 @@ function testDefaultLanguageUrl() {
   /**
    * Tests that a non-default language URL alias works.
    */
-  function testNonDefaultUrl() {
+  public function testNonDefaultUrl() {
     $name = $this->randomMachineName(8);
     $edit = [];
     $edit['source'] = '/admin/config/search/path';
diff --git a/core/modules/quickedit/src/Plugin/InPlaceEditorBase.php b/core/modules/quickedit/src/Plugin/InPlaceEditorBase.php
index c7b54aa1a072605a6cf18ca10dd3795ec3d55a8c..005f41fb8bec9bdb4a67af857e3f3c0875c70d62 100644
--- a/core/modules/quickedit/src/Plugin/InPlaceEditorBase.php
+++ b/core/modules/quickedit/src/Plugin/InPlaceEditorBase.php
@@ -18,7 +18,7 @@ abstract class InPlaceEditorBase extends PluginBase implements InPlaceEditorInte
   /**
    * {@inheritdoc}
    */
-  function getMetadata(FieldItemListInterface $items) {
+  public function getMetadata(FieldItemListInterface $items) {
     return [];
   }
 
diff --git a/core/modules/rdf/src/SchemaOrgDataConverter.php b/core/modules/rdf/src/SchemaOrgDataConverter.php
index dc040484876bb7317211044156e9dadf1af05980..d20a42616fc4beaf2d60ccbc0914deff986015d7 100644
--- a/core/modules/rdf/src/SchemaOrgDataConverter.php
+++ b/core/modules/rdf/src/SchemaOrgDataConverter.php
@@ -22,7 +22,7 @@ class SchemaOrgDataConverter {
    *
    * @see http://schema.org/UserInteraction
    */
-  static function interactionCount($count, $arguments) {
+  public static function interactionCount($count, $arguments) {
     $interaction_type = $arguments['interaction_type'];
     return "$interaction_type:$count";
   }
diff --git a/core/modules/rdf/src/Tests/CommentAttributesTest.php b/core/modules/rdf/src/Tests/CommentAttributesTest.php
index f05d9c1de7b4ef01308fdef33f2828840ad5beba..8ca5798cd5468c03a53423ccadb47b3d2cfb5138 100644
--- a/core/modules/rdf/src/Tests/CommentAttributesTest.php
+++ b/core/modules/rdf/src/Tests/CommentAttributesTest.php
@@ -251,7 +251,7 @@ public function testCommentReplyOfRdfaMarkup() {
    * @param $account
    *   An array containing information about an anonymous user.
    */
-  function _testBasicCommentRdfaMarkup($graph, CommentInterface $comment, $account = []) {
+  public function _testBasicCommentRdfaMarkup($graph, CommentInterface $comment, $account = []) {
     $comment_uri = $comment->url('canonical', ['absolute' => TRUE]);
 
     // Comment type.
@@ -353,7 +353,7 @@ function _testBasicCommentRdfaMarkup($graph, CommentInterface $comment, $account
    * @return \Drupal\comment\Entity\Comment
    *   The saved comment.
    */
-  function saveComment($nid, $uid, $contact = NULL, $pid = 0) {
+  public function saveComment($nid, $uid, $contact = NULL, $pid = 0) {
     $values = [
       'entity_id' => $nid,
       'entity_type' => 'node',
diff --git a/core/modules/rdf/src/Tests/Field/TestDataConverter.php b/core/modules/rdf/src/Tests/Field/TestDataConverter.php
index e314f67c12301299dc996a0a9225eaa7bfffabda..fd30b278a227c67565de65f3885c7f86736857ad 100644
--- a/core/modules/rdf/src/Tests/Field/TestDataConverter.php
+++ b/core/modules/rdf/src/Tests/Field/TestDataConverter.php
@@ -16,7 +16,7 @@ class TestDataConverter {
    * @return string
    *   Returns the data.
    */
-  static function convertFoo($data) {
+  public static function convertFoo($data) {
     return 'foo' . $data['value'];
   }
 
diff --git a/core/modules/rdf/src/Tests/GetNamespacesTest.php b/core/modules/rdf/src/Tests/GetNamespacesTest.php
index 0b19277506287a4ca22be6f75edcfd6564c62d91..ca46c5cd794c9b0137c0187fddbc8408a436b3f1 100644
--- a/core/modules/rdf/src/Tests/GetNamespacesTest.php
+++ b/core/modules/rdf/src/Tests/GetNamespacesTest.php
@@ -22,7 +22,7 @@ class GetNamespacesTest extends WebTestBase {
   /**
    * Tests RDF namespaces.
    */
-  function testGetRdfNamespaces() {
+  public function testGetRdfNamespaces() {
     // Fetches the front page and extracts RDFa 1.1 prefixes.
     $this->drupalGet('');
 
diff --git a/core/modules/rdf/src/Tests/ImageFieldAttributesTest.php b/core/modules/rdf/src/Tests/ImageFieldAttributesTest.php
index 2944b8fcabcdccc0b45f9f8f7e1a1b42ac0d9b3d..d4d7d35948e6cde5434bb6f7b1bfdc5f60307941 100644
--- a/core/modules/rdf/src/Tests/ImageFieldAttributesTest.php
+++ b/core/modules/rdf/src/Tests/ImageFieldAttributesTest.php
@@ -71,7 +71,7 @@ protected function setUp() {
   /**
    * Tests that image fields in teasers have correct resources.
    */
-  function testNodeTeaser() {
+  public function testNodeTeaser() {
     // Set the display options for the teaser.
     $display_options = [
       'type' => 'image',
diff --git a/core/modules/rdf/tests/src/Functional/EntityReferenceFieldAttributesTest.php b/core/modules/rdf/tests/src/Functional/EntityReferenceFieldAttributesTest.php
index 82789d6d058d9c461642c0f9fc61a7c072bb716c..41a03657af9f1d8b4d22acc507fe8ea660782d1c 100644
--- a/core/modules/rdf/tests/src/Functional/EntityReferenceFieldAttributesTest.php
+++ b/core/modules/rdf/tests/src/Functional/EntityReferenceFieldAttributesTest.php
@@ -77,7 +77,7 @@ protected function setUp() {
    * Ensure that file fields have the correct resource as the object in RDFa
    * when displayed as a teaser.
    */
-  function testNodeTeaser() {
+  public function testNodeTeaser() {
     // Set the teaser display to show this field.
     entity_get_display('node', 'article', 'teaser')
       ->setComponent($this->fieldName, ['type' => 'entity_reference_label'])
diff --git a/core/modules/rdf/tests/src/Functional/FileFieldAttributesTest.php b/core/modules/rdf/tests/src/Functional/FileFieldAttributesTest.php
index e3e45bad3e65afd12b5c8a17a9377e9fe33d4bb0..ad743580dc79a150cc073a9463c080e9f340b919 100644
--- a/core/modules/rdf/tests/src/Functional/FileFieldAttributesTest.php
+++ b/core/modules/rdf/tests/src/Functional/FileFieldAttributesTest.php
@@ -73,7 +73,7 @@ protected function setUp() {
    * Ensure that file fields have the correct resource as the object in RDFa
    * when displayed as a teaser.
    */
-  function testNodeTeaser() {
+  public function testNodeTeaser() {
     // Render the teaser.
     $node_render_array = entity_view_multiple([$this->node], 'teaser');
     $html = \Drupal::service('renderer')->renderRoot($node_render_array);
diff --git a/core/modules/rdf/tests/src/Functional/GetRdfNamespacesTest.php b/core/modules/rdf/tests/src/Functional/GetRdfNamespacesTest.php
index c316f3fb076a509cf3260b657f3f4eb4299cbf21..5d31d3ac23922460f9376c7579d51697bb60329e 100644
--- a/core/modules/rdf/tests/src/Functional/GetRdfNamespacesTest.php
+++ b/core/modules/rdf/tests/src/Functional/GetRdfNamespacesTest.php
@@ -21,7 +21,7 @@ class GetRdfNamespacesTest extends BrowserTestBase {
   /**
    * Tests getting RDF namespaces.
    */
-  function testGetRdfNamespaces() {
+  public function testGetRdfNamespaces() {
     // Get all RDF namespaces.
     $ns = rdf_get_namespaces();
 
diff --git a/core/modules/rdf/tests/src/Functional/NodeAttributesTest.php b/core/modules/rdf/tests/src/Functional/NodeAttributesTest.php
index bf65f1b9005b2874a44345acb754450b607ce34e..87067bd68ea92ffc13f7f65e9f16728fed576c8c 100644
--- a/core/modules/rdf/tests/src/Functional/NodeAttributesTest.php
+++ b/core/modules/rdf/tests/src/Functional/NodeAttributesTest.php
@@ -39,7 +39,7 @@ protected function setUp() {
   /**
    * Creates a node of type article and tests its RDFa markup.
    */
-  function testNodeAttributes() {
+  public function testNodeAttributes() {
     // Create node with single quotation mark title to ensure it does not get
     // escaped more than once.
     $node = $this->drupalCreateNode([
diff --git a/core/modules/rdf/tests/src/Functional/TaxonomyAttributesTest.php b/core/modules/rdf/tests/src/Functional/TaxonomyAttributesTest.php
index b21098e6efd72509ba4f6fb395e09aeaef4c62f3..ea74ce5c27b060784411a78722b622857903f4be 100644
--- a/core/modules/rdf/tests/src/Functional/TaxonomyAttributesTest.php
+++ b/core/modules/rdf/tests/src/Functional/TaxonomyAttributesTest.php
@@ -42,7 +42,7 @@ protected function setUp() {
   /**
    * Creates a random term and ensures the RDF output is correct.
    */
-  function testTaxonomyTermRdfaAttributes() {
+  public function testTaxonomyTermRdfaAttributes() {
     $term = $this->createTerm($this->vocabulary);
     $term_uri = $term->url('canonical', ['absolute' => TRUE]);
 
diff --git a/core/modules/rdf/tests/src/Functional/UserAttributesTest.php b/core/modules/rdf/tests/src/Functional/UserAttributesTest.php
index 7c16a18fef5a2d8d2d77d8ccfb999773bf4d4f15..7e98286002b34f9b793dba1d17bba588a06c7b1f 100644
--- a/core/modules/rdf/tests/src/Functional/UserAttributesTest.php
+++ b/core/modules/rdf/tests/src/Functional/UserAttributesTest.php
@@ -36,7 +36,7 @@ protected function setUp() {
    * Creates a random user and ensures the default mapping for the user is
    * being used.
    */
-  function testUserAttributesInMarkup() {
+  public function testUserAttributesInMarkup() {
     // Creates users that should and should not be truncated
     // by template_preprocess_username (20 characters)
     // one of these users tests right on the cusp (20).
diff --git a/core/modules/rdf/tests/src/Kernel/CrudTest.php b/core/modules/rdf/tests/src/Kernel/CrudTest.php
index 1dbb505c1934c6d0fbb1df0c72d8667251880392..f8292a38b74d3b797781db0c974da70896f9b7ff 100644
--- a/core/modules/rdf/tests/src/Kernel/CrudTest.php
+++ b/core/modules/rdf/tests/src/Kernel/CrudTest.php
@@ -42,7 +42,7 @@ protected function setUp() {
   /**
    * Tests creation of RDF mapping.
    */
-  function testMappingCreation() {
+  public function testMappingCreation() {
     $mapping_config_name = "{$this->prefix}.{$this->entityType}.{$this->bundle}";
 
     // Save bundle mapping config.
@@ -55,7 +55,7 @@ function testMappingCreation() {
   /**
    * Test the handling of bundle mappings.
    */
-  function testBundleMapping() {
+  public function testBundleMapping() {
     // Test that the bundle mapping can be saved.
     $types = ['sioc:Post', 'foaf:Document'];
     rdf_get_mapping($this->entityType, $this->bundle)
@@ -78,7 +78,7 @@ function testBundleMapping() {
   /**
    * Test the handling of field mappings.
    */
-  function testFieldMapping() {
+  public function testFieldMapping() {
     $field_name = 'created';
 
     // Test that the field mapping can be saved.
diff --git a/core/modules/rdf/tests/src/Kernel/RdfaAttributesTest.php b/core/modules/rdf/tests/src/Kernel/RdfaAttributesTest.php
index e67e78b788cd7251c23e4c8b292b2f1280399f6b..39f4831223a07c55d4af5321c5e860e1df636ad2 100644
--- a/core/modules/rdf/tests/src/Kernel/RdfaAttributesTest.php
+++ b/core/modules/rdf/tests/src/Kernel/RdfaAttributesTest.php
@@ -21,7 +21,7 @@ class RdfaAttributesTest extends KernelTestBase {
   /**
    * Test attribute creation for mappings which use 'property'.
    */
-  function testProperty() {
+  public function testProperty() {
     $properties = ['dc:title'];
 
     $mapping = ['properties' => $properties];
@@ -33,7 +33,7 @@ function testProperty() {
   /**
    * Test attribute creation for mappings which use 'datatype'.
    */
-  function testDatatype() {
+  public function testDatatype() {
     $properties = ['foo:bar1'];
     $datatype = 'foo:bar1type';
 
@@ -52,7 +52,7 @@ function testDatatype() {
   /**
    * Test attribute creation for mappings which override human-readable content.
    */
-  function testDatatypeCallback() {
+  public function testDatatypeCallback() {
     $properties = ['dc:created'];
     $datatype = 'xsd:dateTime';
 
@@ -77,7 +77,7 @@ function testDatatypeCallback() {
   /**
    * Test attribute creation for mappings which use data converters.
    */
-  function testDatatypeCallbackWithConverter() {
+  public function testDatatypeCallbackWithConverter() {
     $properties = ['schema:interactionCount'];
 
     $data = "23";
@@ -101,7 +101,7 @@ function testDatatypeCallbackWithConverter() {
   /**
    * Test attribute creation for mappings which use 'rel'.
    */
-  function testRel() {
+  public function testRel() {
     $properties = ['sioc:has_creator', 'dc:creator'];
 
     $mapping = [
diff --git a/core/modules/responsive_image/src/Tests/ResponsiveImageFieldUiTest.php b/core/modules/responsive_image/src/Tests/ResponsiveImageFieldUiTest.php
index a091504fcc61c947a4e9033d482acd34f73af3e6..c6acb5683aa4dfae4ddb8eb0dadf7f41c7cf97a1 100644
--- a/core/modules/responsive_image/src/Tests/ResponsiveImageFieldUiTest.php
+++ b/core/modules/responsive_image/src/Tests/ResponsiveImageFieldUiTest.php
@@ -42,7 +42,7 @@ protected function setUp() {
   /**
    * Tests formatter settings.
    */
-  function testResponsiveImageFormatterUI() {
+  public function testResponsiveImageFormatterUI() {
     $manage_fields = 'admin/structure/types/manage/' . $this->type;
     $manage_display = $manage_fields . '/display';
 
diff --git a/core/modules/rest/tests/src/Kernel/RequestHandlerTest.php b/core/modules/rest/tests/src/Kernel/RequestHandlerTest.php
index f653f71046d7f9ba858ad9ac2c68b41462119251..2b8855917e4f00bcdf4a4cfa343013dbb6e925bb 100644
--- a/core/modules/rest/tests/src/Kernel/RequestHandlerTest.php
+++ b/core/modules/rest/tests/src/Kernel/RequestHandlerTest.php
@@ -93,9 +93,9 @@ public function testHandle() {
  */
 class StubRequestHandlerResourcePlugin extends ResourceBase {
 
-  function get() {}
-  function post() {}
-  function patch() {}
-  function delete() {}
+  public function get() {}
+  public function post() {}
+  public function patch() {}
+  public function delete() {}
 
 }
diff --git a/core/modules/search/src/Tests/SearchAdvancedSearchFormTest.php b/core/modules/search/src/Tests/SearchAdvancedSearchFormTest.php
index af12df61e450c7151993417fe9b707daaad09b18..ad00b5252f6ae2564fd6f0e05f0f0861f9397999 100644
--- a/core/modules/search/src/Tests/SearchAdvancedSearchFormTest.php
+++ b/core/modules/search/src/Tests/SearchAdvancedSearchFormTest.php
@@ -37,7 +37,7 @@ protected function setUp() {
   /**
    * Tests advanced search by node type.
    */
-  function testNodeType() {
+  public function testNodeType() {
     // Verify some properties of the node that was created.
     $this->assertTrue($this->node->getType() == 'page', 'Node type is Basic page.');
     $dummy_title = 'Lorem ipsum';
@@ -67,7 +67,7 @@ function testNodeType() {
   /**
    * Tests that after submitting the advanced search form, the form is refilled.
    */
-  function testFormRefill() {
+  public function testFormRefill() {
     $edit = [
       'keys' => 'cat',
       'or' => 'dog gerbil',
diff --git a/core/modules/search/src/Tests/SearchCommentTest.php b/core/modules/search/src/Tests/SearchCommentTest.php
index b0377b796c0c51cd1af024e9c96e5ae766860c9b..704742925216140a80c8ac2e68c44ce63f19bd25 100644
--- a/core/modules/search/src/Tests/SearchCommentTest.php
+++ b/core/modules/search/src/Tests/SearchCommentTest.php
@@ -83,7 +83,7 @@ protected function setUp() {
   /**
    * Verify that comments are rendered using proper format in search results.
    */
-  function testSearchResultsComment() {
+  public function testSearchResultsComment() {
     $node_storage = $this->container->get('entity.manager')->getStorage('node');
     // Create basic_html format that escapes all HTML.
     $basic_html_format = FilterFormat::create([
@@ -215,7 +215,7 @@ function testSearchResultsComment() {
   /**
    * Verify access rules for comment indexing with different permissions.
    */
-  function testSearchResultsCommentAccess() {
+  public function testSearchResultsCommentAccess() {
     $comment_body = 'Test comment body';
     $this->commentSubject = 'Test comment subject';
     $roles = $this->adminUser->getRoles(TRUE);
@@ -276,7 +276,7 @@ function testSearchResultsCommentAccess() {
   /**
    * Set permissions for role.
    */
-  function setRolePermissions($rid, $access_comments = FALSE, $search_content = TRUE) {
+  public function setRolePermissions($rid, $access_comments = FALSE, $search_content = TRUE) {
     $permissions = [
       'access comments' => $access_comments,
       'search content' => $search_content,
@@ -287,7 +287,7 @@ function setRolePermissions($rid, $access_comments = FALSE, $search_content = TR
   /**
    * Update search index and search for comment.
    */
-  function assertCommentAccess($assume_access, $message) {
+  public function assertCommentAccess($assume_access, $message) {
     // Invoke search index update.
     search_mark_for_reindex('node_search', $this->node->id());
     $this->cronRun();
@@ -312,7 +312,7 @@ function assertCommentAccess($assume_access, $message) {
   /**
    * Verify that 'add new comment' does not appear in search results or index.
    */
-  function testAddNewComment() {
+  public function testAddNewComment() {
     // Create a node with a short body.
     $settings = [
       'type' => 'article',
diff --git a/core/modules/search/src/Tests/SearchConfigSettingsFormTest.php b/core/modules/search/src/Tests/SearchConfigSettingsFormTest.php
index c95b60936593675aa22ff5a42b5b60f4ecad6990..b5021d9ec5cb2af51941c734637a75b4fa7c660b 100644
--- a/core/modules/search/src/Tests/SearchConfigSettingsFormTest.php
+++ b/core/modules/search/src/Tests/SearchConfigSettingsFormTest.php
@@ -61,7 +61,7 @@ protected function setUp() {
   /**
    * Verifies the search settings form.
    */
-  function testSearchSettingsPage() {
+  public function testSearchSettingsPage() {
 
     // Test that the settings form displays the correct count of items left to index.
     $this->drupalGet('admin/config/search/pages');
@@ -105,7 +105,7 @@ function testSearchSettingsPage() {
   /**
    * Verifies plugin-supplied settings form.
    */
-  function testSearchModuleSettingsPage() {
+  public function testSearchModuleSettingsPage() {
     $this->drupalGet('admin/config/search/pages');
     $this->clickLink(t('Edit'), 1);
 
@@ -127,7 +127,7 @@ function testSearchModuleSettingsPage() {
   /**
    * Verifies that you can disable individual search plugins.
    */
-  function testSearchModuleDisabling() {
+  public function testSearchModuleDisabling() {
     // Array of search plugins to test: 'keys' are the keywords to search for,
     // and 'text' is the text to assert is on the results page.
     $plugin_info = [
diff --git a/core/modules/search/src/Tests/SearchEmbedFormTest.php b/core/modules/search/src/Tests/SearchEmbedFormTest.php
index df5fdfc6c55e8727bc3c08e3c4d02a9f11f73947..5f3fbea32b3b3094f784d6b717c69ed13ccd8989 100644
--- a/core/modules/search/src/Tests/SearchEmbedFormTest.php
+++ b/core/modules/search/src/Tests/SearchEmbedFormTest.php
@@ -50,7 +50,7 @@ protected function setUp() {
   /**
    * Tests that the embedded form appears and can be submitted.
    */
-  function testEmbeddedForm() {
+  public function testEmbeddedForm() {
     // First verify we can submit the form from the module's page.
     $this->drupalPostForm('search_embedded_form',
       ['name' => 'John'],
diff --git a/core/modules/search/src/Tests/SearchLanguageTest.php b/core/modules/search/src/Tests/SearchLanguageTest.php
index 25f269d870a254f49d64aa71f51699e9666b25ec..ec150855d165ef5259c64542dd047edb32a81d40 100644
--- a/core/modules/search/src/Tests/SearchLanguageTest.php
+++ b/core/modules/search/src/Tests/SearchLanguageTest.php
@@ -86,7 +86,7 @@ protected function setUp() {
     search_update_totals();
   }
 
-  function testLanguages() {
+  public function testLanguages() {
     // Add predefined language.
     $edit = ['predefined_langcode' => 'fr'];
     $this->drupalPostForm('admin/config/regional/language/add', $edit, t('Add language'));
diff --git a/core/modules/search/src/Tests/SearchNodeUpdateAndDeletionTest.php b/core/modules/search/src/Tests/SearchNodeUpdateAndDeletionTest.php
index 0f053d24bc8cc969e381a8b8d8354ba05eb57c1d..9b860523529ae5f84dcf100a1ceb1ee189ce8683 100644
--- a/core/modules/search/src/Tests/SearchNodeUpdateAndDeletionTest.php
+++ b/core/modules/search/src/Tests/SearchNodeUpdateAndDeletionTest.php
@@ -34,7 +34,7 @@ protected function setUp() {
   /**
    * Tests that the search index info is properly updated when a node changes.
    */
-  function testSearchIndexUpdateOnNodeChange() {
+  public function testSearchIndexUpdateOnNodeChange() {
     // Create a node.
     $node = $this->drupalCreateNode([
       'title' => 'Someone who says Ni!',
@@ -68,7 +68,7 @@ function testSearchIndexUpdateOnNodeChange() {
   /**
    * Tests that the search index info is updated when a node is deleted.
    */
-  function testSearchIndexUpdateOnNodeDeletion() {
+  public function testSearchIndexUpdateOnNodeDeletion() {
     // Create a node.
     $node = $this->drupalCreateNode([
       'title' => 'No dragons here',
diff --git a/core/modules/search/src/Tests/SearchNumberMatchingTest.php b/core/modules/search/src/Tests/SearchNumberMatchingTest.php
index de627e80f04e1b95ba125c00682f7a3cf86a8f24..7671c7b12469ce15375b76a8213a538b587b85f0 100644
--- a/core/modules/search/src/Tests/SearchNumberMatchingTest.php
+++ b/core/modules/search/src/Tests/SearchNumberMatchingTest.php
@@ -68,7 +68,7 @@ protected function setUp() {
   /**
    * Tests that all the numbers can be searched.
    */
-  function testNumberSearching() {
+  public function testNumberSearching() {
     for ($i = 0; $i < count($this->numbers); $i++) {
       $node = $this->nodes[$i];
 
diff --git a/core/modules/search/src/Tests/SearchNumbersTest.php b/core/modules/search/src/Tests/SearchNumbersTest.php
index 7034c5e7e3df94a27ac4a06591328a72bceef496..dbb50396631daacaee872850c7b6de35a716c529 100644
--- a/core/modules/search/src/Tests/SearchNumbersTest.php
+++ b/core/modules/search/src/Tests/SearchNumbersTest.php
@@ -75,7 +75,7 @@ protected function setUp() {
   /**
    * Tests that all the numbers can be searched.
    */
-  function testNumberSearching() {
+  public function testNumberSearching() {
     $types = array_keys($this->numbers);
 
     foreach ($types as $type) {
diff --git a/core/modules/search/src/Tests/SearchPageCacheTagsTest.php b/core/modules/search/src/Tests/SearchPageCacheTagsTest.php
index 5eafa27f99bf66521e883787958eb957de836002..417d9918a2ca47c45750272f51b8b70ebd10e73e 100644
--- a/core/modules/search/src/Tests/SearchPageCacheTagsTest.php
+++ b/core/modules/search/src/Tests/SearchPageCacheTagsTest.php
@@ -50,7 +50,7 @@ protected function setUp() {
   /**
    * Tests the presence of the expected cache tag in various situations.
    */
-  function testSearchText() {
+  public function testSearchText() {
     $this->drupalLogin($this->searchingUser);
 
     // Initial page for searching nodes.
diff --git a/core/modules/search/src/Tests/SearchPageTextTest.php b/core/modules/search/src/Tests/SearchPageTextTest.php
index 9815e307ce98408480490f7df0acf575141c1751..95d097d207ee0e09b115a1559bd0dd288e2e4d5a 100644
--- a/core/modules/search/src/Tests/SearchPageTextTest.php
+++ b/core/modules/search/src/Tests/SearchPageTextTest.php
@@ -42,7 +42,7 @@ protected function setUp() {
    *
    * This is a regression test for https://www.drupal.org/node/2338081
    */
-  function testSearchLabelXSS() {
+  public function testSearchLabelXSS() {
     $this->drupalLogin($this->drupalCreateUser(['administer search']));
 
     $keys['label'] = '<script>alert("Dont Panic");</script>';
@@ -56,7 +56,7 @@ function testSearchLabelXSS() {
   /**
    * Tests the failed search text, and various other text on the search page.
    */
-  function testSearchText() {
+  public function testSearchText() {
     $this->drupalLogin($this->searchingUser);
     $this->drupalGet('search/node');
     $this->assertText(t('Enter your keywords'));
diff --git a/core/modules/search/src/Tests/SearchPreprocessLangcodeTest.php b/core/modules/search/src/Tests/SearchPreprocessLangcodeTest.php
index 322ba2288981a02395007dd09fb878338ed731eb..ab264a1a85b89610f9dee92835606dfcdb863d5b 100644
--- a/core/modules/search/src/Tests/SearchPreprocessLangcodeTest.php
+++ b/core/modules/search/src/Tests/SearchPreprocessLangcodeTest.php
@@ -38,7 +38,7 @@ protected function setUp() {
   /**
    * Tests that hook_search_preprocess() returns the correct langcode.
    */
-  function testPreprocessLangcode() {
+  public function testPreprocessLangcode() {
     // Create a node.
     $this->node = $this->drupalCreateNode(['body' => [[]], 'langcode' => 'en']);
 
@@ -63,7 +63,7 @@ function testPreprocessLangcode() {
   /**
    * Tests stemming for hook_search_preprocess().
    */
-  function testPreprocessStemming() {
+  public function testPreprocessStemming() {
     // Create a node.
     $this->node = $this->drupalCreateNode([
       'title' => 'we are testing',
diff --git a/core/modules/search/src/Tests/SearchQueryAlterTest.php b/core/modules/search/src/Tests/SearchQueryAlterTest.php
index 133b0f3d7ed9007ec987eb0789ea853db9e3f228..66269dd6c4e5c2c9b48b20589d81e0f95b2857c8 100644
--- a/core/modules/search/src/Tests/SearchQueryAlterTest.php
+++ b/core/modules/search/src/Tests/SearchQueryAlterTest.php
@@ -18,7 +18,7 @@ class SearchQueryAlterTest extends SearchTestBase {
   /**
    * Tests that the query alter works.
    */
-  function testQueryAlter() {
+  public function testQueryAlter() {
     // Log in with sufficient privileges.
     $this->drupalLogin($this->drupalCreateUser(['create page content', 'search content']));
 
diff --git a/core/modules/search/src/ViewsSearchQuery.php b/core/modules/search/src/ViewsSearchQuery.php
index e61a7e0a1c6229f5f05520ffd05194efb8b4faa1..ca804a889bd15171206abd70e06b304b2b2bf4f1 100644
--- a/core/modules/search/src/ViewsSearchQuery.php
+++ b/core/modules/search/src/ViewsSearchQuery.php
@@ -69,7 +69,7 @@ public function publicParseSearchExpression() {
    *   item from a \Drupal\Core\Database\Query\Condition::conditions array,
    *   which must have a 'field' element.
    */
-  function conditionReplaceString($search, $replace, &$condition) {
+  public function conditionReplaceString($search, $replace, &$condition) {
     if ($condition['field'] instanceof Condition) {
       $conditions =& $condition['field']->conditions();
       foreach ($conditions as $key => &$subcondition) {
diff --git a/core/modules/search/tests/src/Functional/SearchCommentCountToggleTest.php b/core/modules/search/tests/src/Functional/SearchCommentCountToggleTest.php
index 14ae5572e466cc72353e2243326f4f2c44dd074c..7cd9f8562d983691ce35c13cfa01a366fd39beae 100644
--- a/core/modules/search/tests/src/Functional/SearchCommentCountToggleTest.php
+++ b/core/modules/search/tests/src/Functional/SearchCommentCountToggleTest.php
@@ -79,7 +79,7 @@ protected function setUp() {
   /**
    * Verify that comment count display toggles properly on comment status of node
    */
-  function testSearchCommentCountToggle() {
+  public function testSearchCommentCountToggle() {
     // Search for the nodes by string in the node body.
     $edit = [
       'keys' => "'SearchCommentToggleTestCase'",
diff --git a/core/modules/search/tests/src/Functional/SearchExactTest.php b/core/modules/search/tests/src/Functional/SearchExactTest.php
index ca876ae2926dfe6bd806c408053dd82271748c14..04163918e540131599e5d6569c451dfc8cf69592 100644
--- a/core/modules/search/tests/src/Functional/SearchExactTest.php
+++ b/core/modules/search/tests/src/Functional/SearchExactTest.php
@@ -11,7 +11,7 @@ class SearchExactTest extends SearchTestBase {
   /**
    * Tests that the correct number of pager links are found for both keywords and phrases.
    */
-  function testExactQuery() {
+  public function testExactQuery() {
     // Log in with sufficient privileges.
     $user = $this->drupalCreateUser(['create page content', 'search content']);
     $this->drupalLogin($user);
diff --git a/core/modules/search/tests/src/Functional/SearchKeywordsConditionsTest.php b/core/modules/search/tests/src/Functional/SearchKeywordsConditionsTest.php
index 287596ab3e354063e94b892f135a316010b2bc6a..26bff66bdffbca044349b7240161cfabd745fbe3 100644
--- a/core/modules/search/tests/src/Functional/SearchKeywordsConditionsTest.php
+++ b/core/modules/search/tests/src/Functional/SearchKeywordsConditionsTest.php
@@ -41,7 +41,7 @@ protected function setUp() {
   /**
    * Verify the keywords are captured and conditions respected.
    */
-  function testSearchKeywordsConditions() {
+  public function testSearchKeywordsConditions() {
     // No keys, not conditions - no results.
     $this->drupalGet('search/dummy_path');
     $this->assertNoText('Dummy search snippet to display');
diff --git a/core/modules/search/tests/src/Functional/SearchMultilingualEntityTest.php b/core/modules/search/tests/src/Functional/SearchMultilingualEntityTest.php
index 717ffc51957c13da3532c8ec0206b8c1a7b5d842..3dfc1179c0d388b9f7e20ce169336d6517f772d2 100644
--- a/core/modules/search/tests/src/Functional/SearchMultilingualEntityTest.php
+++ b/core/modules/search/tests/src/Functional/SearchMultilingualEntityTest.php
@@ -114,7 +114,7 @@ protected function setUp() {
   /**
    * Tests the indexing throttle and search results with multilingual nodes.
    */
-  function testMultilingualSearch() {
+  public function testMultilingualSearch() {
     // Index only 2 nodes per cron run. We cannot do this setting in the UI,
     // because it doesn't go this low.
     $this->config('search.settings')->set('index.cron_limit', 2)->save();
diff --git a/core/modules/search/tests/src/Functional/SearchNodeDiacriticsTest.php b/core/modules/search/tests/src/Functional/SearchNodeDiacriticsTest.php
index 32aa102de697fdc66369fedcb50461ef8e011d8a..848e35762c4487dab476b380be41862cd9ac3912 100644
--- a/core/modules/search/tests/src/Functional/SearchNodeDiacriticsTest.php
+++ b/core/modules/search/tests/src/Functional/SearchNodeDiacriticsTest.php
@@ -28,7 +28,7 @@ protected function setUp() {
   /**
    * Tests that search returns results with diacritics in the search phrase.
    */
-  function testPhraseSearchPunctuation() {
+  public function testPhraseSearchPunctuation() {
     $body_text = 'The Enricþment Center is cómmīŦŧęđ to the well BɆĬŇĜ of æll påŔťıçȉpǎǹţș. ';
     $body_text .= 'Also meklēt (see #731298)';
     $this->drupalCreateNode(['body' => [['value' => $body_text]]]);
diff --git a/core/modules/search/tests/src/Functional/SearchNodePunctuationTest.php b/core/modules/search/tests/src/Functional/SearchNodePunctuationTest.php
index 8c8958cea85984f759e916e90931d18bcbea9b67..59354460edc4919478feeccd197c49d286144ec4 100644
--- a/core/modules/search/tests/src/Functional/SearchNodePunctuationTest.php
+++ b/core/modules/search/tests/src/Functional/SearchNodePunctuationTest.php
@@ -28,7 +28,7 @@ protected function setUp() {
   /**
    * Tests that search works with punctuation and HTML entities.
    */
-  function testPhraseSearchPunctuation() {
+  public function testPhraseSearchPunctuation() {
     $node = $this->drupalCreateNode(['body' => [['value' => "The bunny's ears were fluffy."]]]);
     $node2 = $this->drupalCreateNode(['body' => [['value' => 'Dignissim Aliquam &amp; Quieligo meus natu quae quia te. Damnum&copy; erat&mdash; neo pneum. Facilisi feugiat ibidem ratis.']]]);
 
diff --git a/core/modules/search/tests/src/Functional/SearchPageOverrideTest.php b/core/modules/search/tests/src/Functional/SearchPageOverrideTest.php
index fe6e9805e70a40c4ed37597bc146ae3cc21e35b7..4dfca49d187ab222c8c702a6e37463df19220ad8 100644
--- a/core/modules/search/tests/src/Functional/SearchPageOverrideTest.php
+++ b/core/modules/search/tests/src/Functional/SearchPageOverrideTest.php
@@ -34,7 +34,7 @@ protected function setUp() {
     $this->drupalLogin($this->searchUser);
   }
 
-  function testSearchPageHook() {
+  public function testSearchPageHook() {
     $keys = 'bike shed ' . $this->randomMachineName();
     $this->drupalGet("search/dummy_path", ['query' => ['keys' => $keys]]);
     $this->assertText('Dummy search snippet', 'Dummy search snippet is shown');
diff --git a/core/modules/search/tests/src/Functional/SearchSimplifyTest.php b/core/modules/search/tests/src/Functional/SearchSimplifyTest.php
index a70b65e4d3313ba583d4926bd50d618c482abe97..bd3bbb43d6a1cbfd4fdc9e23a72a11232a83fee5 100644
--- a/core/modules/search/tests/src/Functional/SearchSimplifyTest.php
+++ b/core/modules/search/tests/src/Functional/SearchSimplifyTest.php
@@ -12,7 +12,7 @@ class SearchSimplifyTest extends SearchTestBase {
   /**
    * Tests that all Unicode characters simplify correctly.
    */
-  function testSearchSimplifyUnicode() {
+  public function testSearchSimplifyUnicode() {
     // This test uses a file that was constructed so that the even lines are
     // boundary characters, and the odd lines are valid word characters. (It
     // was generated as a sequence of all the Unicode characters, and then the
@@ -64,7 +64,7 @@ function testSearchSimplifyUnicode() {
   /**
    * Tests that search_simplify() does the right thing with punctuation.
    */
-  function testSearchSimplifyPunctuation() {
+  public function testSearchSimplifyPunctuation() {
     $cases = [
       ['20.03/94-28,876', '20039428876', 'Punctuation removed from numbers'],
       ['great...drupal--module', 'great drupal module', 'Multiple dot and dashes are word boundaries'],
diff --git a/core/modules/search/tests/src/Functional/SearchTokenizerTest.php b/core/modules/search/tests/src/Functional/SearchTokenizerTest.php
index 03667bc77b43e400a441b9faa66ba4fb6919c057..7215312d01797ca774a0cf8d8002693d2482cdb0 100644
--- a/core/modules/search/tests/src/Functional/SearchTokenizerTest.php
+++ b/core/modules/search/tests/src/Functional/SearchTokenizerTest.php
@@ -18,7 +18,7 @@ class SearchTokenizerTest extends SearchTestBase {
    * character classes are tokenized properly. See PREG_CLASS_CKJ for more
    * information.
    */
-  function testTokenizer() {
+  public function testTokenizer() {
     // Set the minimum word size to 1 (to split all CJK characters) and make
     // sure CJK tokenizing is turned on.
     $this->config('search.settings')
@@ -106,7 +106,7 @@ function testTokenizer() {
    * This is just a sanity check - it verifies that strings of letters are
    * not tokenized.
    */
-  function testNoTokenizer() {
+  public function testNoTokenizer() {
     // Set the minimum word size to 1 (to split all CJK characters) and make
     // sure CJK tokenizing is turned on.
     $this->config('search.settings')
@@ -128,7 +128,7 @@ function testNoTokenizer() {
    * converts a number to the corresponding unicode character. Adapted from
    * functions supplied in comments on several functions on php.net.
    */
-  function code2utf($num) {
+  public function code2utf($num) {
     if ($num < 128) {
       return chr($num);
     }
diff --git a/core/modules/search/tests/src/Kernel/SearchExcerptTest.php b/core/modules/search/tests/src/Kernel/SearchExcerptTest.php
index 02844b01114bdbf553772c5f7bb82d21fc234c04..e10075d09ae15bc94ab34901725febed1dd09a80 100644
--- a/core/modules/search/tests/src/Kernel/SearchExcerptTest.php
+++ b/core/modules/search/tests/src/Kernel/SearchExcerptTest.php
@@ -27,7 +27,7 @@ class SearchExcerptTest extends KernelTestBase {
    * contains either highlighted keywords or the original marked
    * up string if no keywords matched the string.
    */
-  function testSearchExcerpt() {
+  public function testSearchExcerpt() {
     // Make some text with entities and tags.
     $text = 'The <strong>quick</strong> <a href="#">brown</a> fox &amp; jumps <h2>over</h2> the lazy dog';
     $expected = 'The quick brown fox &amp; jumps over the lazy dog';
@@ -74,7 +74,7 @@ function testSearchExcerpt() {
    * search_simplify(). This test passes keywords that match simplified words
    * and compares them with strings that contain the original unsimplified word.
    */
-  function testSearchExcerptSimplified() {
+  public function testSearchExcerptSimplified() {
     $start_time = microtime(TRUE);
 
     $lorem1 = 'Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam vitae arcu at leo cursus laoreet. Curabitur dui tortor, adipiscing malesuada tempor in, bibendum ac diam. Cras non tellus a libero pellentesque condimentum. What is a Drupalism? Suspendisse ac lacus libero. Ut non est vel nisl faucibus interdum nec sed leo. Pellentesque sem risus, vulputate eu semper eget, auctor in libero.';
diff --git a/core/modules/search/tests/src/Kernel/SearchMatchTest.php b/core/modules/search/tests/src/Kernel/SearchMatchTest.php
index 13c926765e888205fd2913f0bf24be39ec3e6c7f..7037646bc8636f52121b149665cdebccfbc05c16 100644
--- a/core/modules/search/tests/src/Kernel/SearchMatchTest.php
+++ b/core/modules/search/tests/src/Kernel/SearchMatchTest.php
@@ -37,7 +37,7 @@ protected function setUp() {
   /**
    * Test search indexing.
    */
-  function testMatching() {
+  public function testMatching() {
     $this->_setup();
     $this->_testQueries();
   }
@@ -45,7 +45,7 @@ function testMatching() {
   /**
    * Set up a small index of items to test against.
    */
-  function _setup() {
+  public function _setup() {
     $this->config('search.settings')->set('index.minimum_word_size', 3)->save();
 
     for ($i = 1; $i <= 7; ++$i) {
@@ -77,7 +77,7 @@ function _setup() {
    *   6  enim am minim veniam es cillum
    *   7  am minim veniam es cillum dolore eu
    */
-  function getText($n) {
+  public function getText($n) {
     $words = explode(' ', "Ipsum dolore sit am. Ut enim am minim veniam. Es cillum dolore eu.");
     return implode(' ', array_slice($words, $n - 1, $n));
   }
@@ -92,7 +92,7 @@ function getText($n) {
    *   11 came over from germany
    *   12 over from germany swimming
    */
-  function getText2($n) {
+  public function getText2($n) {
     $words = explode(' ', "Dear King Philip came over from Germany swimming.");
     return implode(' ', array_slice($words, $n - 1, $n));
   }
@@ -100,7 +100,7 @@ function getText2($n) {
   /**
    * Run predefine queries looking for indexed terms.
    */
-  function _testQueries() {
+  public function _testQueries() {
     // Note: OR queries that include short words in OR groups are only accepted
     // if the ORed terms are ANDed with at least one long word in the rest of
     // the query. Examples:
@@ -218,7 +218,7 @@ function _testQueries() {
    *
    * Verify if a query produces the correct results.
    */
-  function _testQueryMatching($query, $set, $results) {
+  public function _testQueryMatching($query, $set, $results) {
     // Get result IDs.
     $found = [];
     foreach ($set as $item) {
@@ -236,7 +236,7 @@ function _testQueryMatching($query, $set, $results) {
    *
    * Verify if a query produces normalized, monotonous scores.
    */
-  function _testQueryScores($query, $set, $results) {
+  public function _testQueryScores($query, $set, $results) {
     // Get result scores.
     $scores = [];
     foreach ($set as $item) {
diff --git a/core/modules/serialization/tests/src/Kernel/EntityResolverTest.php b/core/modules/serialization/tests/src/Kernel/EntityResolverTest.php
index a470d98a74004a167d107d1e67f195b15814d1ea..38af46e9949712efe273f1b514ab4a6be48e8a89 100644
--- a/core/modules/serialization/tests/src/Kernel/EntityResolverTest.php
+++ b/core/modules/serialization/tests/src/Kernel/EntityResolverTest.php
@@ -54,7 +54,7 @@ protected function setUp() {
   /**
    * Test that fields referencing UUIDs can be denormalized.
    */
-  function testUuidEntityResolver() {
+  public function testUuidEntityResolver() {
     // Create an entity to get the UUID from.
     $entity = EntityTestMulRev::create(['type' => 'entity_test_mulrev']);
     $entity->set('name', 'foobar');
diff --git a/core/modules/shortcut/src/Tests/ShortcutSetsTest.php b/core/modules/shortcut/src/Tests/ShortcutSetsTest.php
index e4c7fb77a165dca446fb146dc3bd2bb0d1b85e05..e34518e0ae0100e693ff2b79b5de0f0c1c5a6440 100644
--- a/core/modules/shortcut/src/Tests/ShortcutSetsTest.php
+++ b/core/modules/shortcut/src/Tests/ShortcutSetsTest.php
@@ -30,7 +30,7 @@ protected function setUp() {
   /**
    * Tests creating a shortcut set.
    */
-  function testShortcutSetAdd() {
+  public function testShortcutSetAdd() {
     $this->drupalGet('admin/config/user-interface/shortcut');
     $this->clickLink(t('Add shortcut set'));
     $edit = [
@@ -47,7 +47,7 @@ function testShortcutSetAdd() {
   /**
    * Tests editing a shortcut set.
    */
-  function testShortcutSetEdit() {
+  public function testShortcutSetEdit() {
     $set = $this->set;
     $shortcuts = $set->getShortcuts();
 
@@ -100,7 +100,7 @@ function testShortcutSetEdit() {
   /**
    * Tests switching a user's own shortcut set.
    */
-  function testShortcutSetSwitchOwn() {
+  public function testShortcutSetSwitchOwn() {
     $new_set = $this->generateShortcutSet($this->randomMachineName());
 
     // Attempt to switch the default shortcut set to the newly created shortcut
@@ -114,7 +114,7 @@ function testShortcutSetSwitchOwn() {
   /**
    * Tests switching another user's shortcut set.
    */
-  function testShortcutSetAssign() {
+  public function testShortcutSetAssign() {
     $new_set = $this->generateShortcutSet($this->randomMachineName());
 
     \Drupal::entityManager()->getStorage('shortcut_set')->assignUser($new_set, $this->shortcutUser);
@@ -125,7 +125,7 @@ function testShortcutSetAssign() {
   /**
    * Tests switching a user's shortcut set and creating one at the same time.
    */
-  function testShortcutSetSwitchCreate() {
+  public function testShortcutSetSwitchCreate() {
     $edit = [
       'set' => 'new',
       'id' => strtolower($this->randomMachineName()),
@@ -140,7 +140,7 @@ function testShortcutSetSwitchCreate() {
   /**
    * Tests switching a user's shortcut set without providing a new set name.
    */
-  function testShortcutSetSwitchNoSetName() {
+  public function testShortcutSetSwitchNoSetName() {
     $edit = ['set' => 'new'];
     $this->drupalPostForm('user/' . $this->adminUser->id() . '/shortcuts', $edit, t('Change set'));
     $this->assertText(t('The new set label is required.'));
@@ -152,7 +152,7 @@ function testShortcutSetSwitchNoSetName() {
   /**
    * Tests renaming a shortcut set.
    */
-  function testShortcutSetRename() {
+  public function testShortcutSetRename() {
     $set = $this->set;
 
     $new_label = $this->randomMachineName();
@@ -166,7 +166,7 @@ function testShortcutSetRename() {
   /**
    * Tests unassigning a shortcut set.
    */
-  function testShortcutSetUnassign() {
+  public function testShortcutSetUnassign() {
     $new_set = $this->generateShortcutSet($this->randomMachineName());
 
     $shortcut_set_storage = \Drupal::entityManager()->getStorage('shortcut_set');
@@ -180,7 +180,7 @@ function testShortcutSetUnassign() {
   /**
    * Tests deleting a shortcut set.
    */
-  function testShortcutSetDelete() {
+  public function testShortcutSetDelete() {
     $new_set = $this->generateShortcutSet($this->randomMachineName());
 
     $this->drupalPostForm('admin/config/user-interface/shortcut/manage/' . $new_set->id() . '/delete', [], t('Delete'));
@@ -191,7 +191,7 @@ function testShortcutSetDelete() {
   /**
    * Tests deleting the default shortcut set.
    */
-  function testShortcutSetDeleteDefault() {
+  public function testShortcutSetDeleteDefault() {
     $this->drupalGet('admin/config/user-interface/shortcut/manage/default/delete');
     $this->assertResponse(403);
   }
@@ -199,7 +199,7 @@ function testShortcutSetDeleteDefault() {
   /**
    * Tests creating a new shortcut set with a defined set name.
    */
-  function testShortcutSetCreateWithSetName() {
+  public function testShortcutSetCreateWithSetName() {
     $random_name = $this->randomMachineName();
     $new_set = $this->generateShortcutSet($random_name, $random_name);
     $sets = ShortcutSet::loadMultiple();
diff --git a/core/modules/shortcut/src/Tests/ShortcutTestBase.php b/core/modules/shortcut/src/Tests/ShortcutTestBase.php
index 7fd5a4535d9b519bfb4acb3cc255b7ebb7ba05ad..1e3196ceb4d1fe113606082e5fb37e8b715d5d92 100644
--- a/core/modules/shortcut/src/Tests/ShortcutTestBase.php
+++ b/core/modules/shortcut/src/Tests/ShortcutTestBase.php
@@ -93,7 +93,7 @@ protected function setUp() {
   /**
    * Creates a generic shortcut set.
    */
-  function generateShortcutSet($label = '', $id = NULL) {
+  public function generateShortcutSet($label = '', $id = NULL) {
     $set = ShortcutSet::create([
       'id' => isset($id) ? $id : strtolower($this->randomMachineName()),
       'label' => empty($label) ? $this->randomString() : $label,
@@ -116,7 +116,7 @@ function generateShortcutSet($label = '', $id = NULL) {
    * @return array
    *   Array of the requested information from each link.
    */
-  function getShortcutInformation(ShortcutSetInterface $set, $key) {
+  public function getShortcutInformation(ShortcutSetInterface $set, $key) {
     $info = [];
     \Drupal::entityManager()->getStorage('shortcut')->resetCache();
     foreach ($set->getShortcuts() as $shortcut) {
diff --git a/core/modules/simpletest/src/KernelTestBase.php b/core/modules/simpletest/src/KernelTestBase.php
index 9b7495af29a78cf33a04b720f8c54e60b5076165..8c92ec7dad4b12cb1687a3ef767c96ba72565cbf 100644
--- a/core/modules/simpletest/src/KernelTestBase.php
+++ b/core/modules/simpletest/src/KernelTestBase.php
@@ -90,7 +90,7 @@ abstract class KernelTestBase extends TestBase {
   /**
    * {@inheritdoc}
    */
-  function __construct($test_id = NULL) {
+  public function __construct($test_id = NULL) {
     parent::__construct($test_id);
     $this->skipClasses[__CLASS__] = TRUE;
   }
diff --git a/core/modules/simpletest/src/NodeCreationTrait.php b/core/modules/simpletest/src/NodeCreationTrait.php
index 86321a2b99acbbc4bc91f0df3c3d3e6fb2316322..20dc3f8379d80ca13c7363292d291ababaacb41f 100644
--- a/core/modules/simpletest/src/NodeCreationTrait.php
+++ b/core/modules/simpletest/src/NodeCreationTrait.php
@@ -22,7 +22,7 @@ trait NodeCreationTrait {
    * @return \Drupal\node\NodeInterface
    *   A node entity matching $title.
    */
-  function getNodeByTitle($title, $reset = FALSE) {
+  public function getNodeByTitle($title, $reset = FALSE) {
     if ($reset) {
       \Drupal::entityTypeManager()->getStorage('node')->resetCache();
     }
diff --git a/core/modules/simpletest/src/TestServiceProvider.php b/core/modules/simpletest/src/TestServiceProvider.php
index 817b68e5420064ba8f55e1756df35c7fffcbcc27..de3117fd2aab751df451221d9873d15b0f23300b 100644
--- a/core/modules/simpletest/src/TestServiceProvider.php
+++ b/core/modules/simpletest/src/TestServiceProvider.php
@@ -17,7 +17,7 @@ class TestServiceProvider implements ServiceProviderInterface, ServiceModifierIn
   /**
    * {@inheritdoc}
    */
-  function register(ContainerBuilder $container) {
+  public function register(ContainerBuilder $container) {
     if (static::$currentTest && method_exists(static::$currentTest, 'containerBuild')) {
       static::$currentTest->containerBuild($container);
     }
diff --git a/core/modules/simpletest/src/Tests/BrokenSetUpTest.php b/core/modules/simpletest/src/Tests/BrokenSetUpTest.php
index 673d5b9a8a0a022ce639c2dc9123667cdf573005..febb9cfda75c82dc57af55a02f964ebae8e2b792 100644
--- a/core/modules/simpletest/src/Tests/BrokenSetUpTest.php
+++ b/core/modules/simpletest/src/Tests/BrokenSetUpTest.php
@@ -71,7 +71,7 @@ protected function tearDown() {
   /**
    * Runs this test case from within the simpletest child site.
    */
-  function testMethod() {
+  public function testMethod() {
     // If the test is being run from the main site, run it again from the web
     // interface within the simpletest child site.
     if (!$this->isInChildSite()) {
diff --git a/core/modules/simpletest/src/Tests/BrowserTest.php b/core/modules/simpletest/src/Tests/BrowserTest.php
index be9e006978ed264ec6df80ed5a5bf86a8a9b408b..fdfaff851d8fb036b1416897aa0d5ef5fe515e3b 100644
--- a/core/modules/simpletest/src/Tests/BrowserTest.php
+++ b/core/modules/simpletest/src/Tests/BrowserTest.php
@@ -37,7 +37,7 @@ protected function setUp() {
   /**
    * Test \Drupal\simpletest\WebTestBase::getAbsoluteUrl().
    */
-  function testGetAbsoluteUrl() {
+  public function testGetAbsoluteUrl() {
     $url = 'user/login';
 
     $this->drupalGet($url);
@@ -58,7 +58,7 @@ function testGetAbsoluteUrl() {
   /**
    * Tests XPath escaping.
    */
-  function testXPathEscaping() {
+  public function testXPathEscaping() {
     $testpage = <<< EOF
 <html>
 <body>
diff --git a/core/modules/simpletest/src/Tests/InstallationProfileModuleTestsTest.php b/core/modules/simpletest/src/Tests/InstallationProfileModuleTestsTest.php
index a4365f810e6a21ccfef890a83e68376844d3409c..379aed4499026af41190d6bea62e6d9933ab1148 100644
--- a/core/modules/simpletest/src/Tests/InstallationProfileModuleTestsTest.php
+++ b/core/modules/simpletest/src/Tests/InstallationProfileModuleTestsTest.php
@@ -49,7 +49,7 @@ protected function setUp() {
   /**
    * Tests existence of test case located in an installation profile module.
    */
-  function testInstallationProfileTests() {
+  public function testInstallationProfileTests() {
     $this->drupalGet('admin/config/development/testing');
     $this->assertText('Drupal\drupal_system_listing_compatible_test\Tests\SystemListingCompatibleTest');
     $edit = [
diff --git a/core/modules/simpletest/src/Tests/KernelTestBaseTest.php b/core/modules/simpletest/src/Tests/KernelTestBaseTest.php
index 2ed63b3af40082ebfa03d18d64c6db3783501a1c..1e9e75da0b91a47ee38527c75aa50d86fca4b092 100644
--- a/core/modules/simpletest/src/Tests/KernelTestBaseTest.php
+++ b/core/modules/simpletest/src/Tests/KernelTestBaseTest.php
@@ -50,7 +50,7 @@ function simpletest_test_stub_settings_function() {}
   /**
    * Tests expected behavior of setUp().
    */
-  function testSetUp() {
+  public function testSetUp() {
     $modules = ['entity_test'];
     $table = 'entity_test';
 
@@ -79,7 +79,7 @@ function testSetUp() {
   /**
    * Tests expected load behavior of enableModules().
    */
-  function testEnableModulesLoad() {
+  public function testEnableModulesLoad() {
     $module = 'field_test';
 
     // Verify that the module does not exist yet.
@@ -103,7 +103,7 @@ function testEnableModulesLoad() {
   /**
    * Tests expected installation behavior of enableModules().
    */
-  function testEnableModulesInstall() {
+  public function testEnableModulesInstall() {
     $module = 'module_test';
     $table = 'module_test';
 
@@ -134,7 +134,7 @@ function testEnableModulesInstall() {
   /**
    * Tests installing modules with DependencyInjection services.
    */
-  function testEnableModulesInstallContainer() {
+  public function testEnableModulesInstallContainer() {
     // Install Node module.
     $this->enableModules(['user', 'field', 'node']);
 
@@ -151,7 +151,7 @@ function testEnableModulesInstallContainer() {
   /**
    * Tests expected behavior of installSchema().
    */
-  function testInstallSchema() {
+  public function testInstallSchema() {
     $module = 'entity_test';
     $table = 'entity_test_example';
     // Verify that we can install a table from the module schema.
@@ -200,7 +200,7 @@ function testInstallSchema() {
   /**
    * Tests expected behavior of installEntitySchema().
    */
-  function testInstallEntitySchema() {
+  public function testInstallEntitySchema() {
     $entity = 'entity_test';
     // The entity_test Entity has a field that depends on the User module.
     $this->enableModules(['user']);
@@ -212,7 +212,7 @@ function testInstallEntitySchema() {
   /**
    * Tests expected behavior of installConfig().
    */
-  function testInstallConfig() {
+  public function testInstallConfig() {
     // The user module has configuration that depends on system.
     $this->enableModules(['system']);
     $module = 'user';
@@ -237,7 +237,7 @@ function testInstallConfig() {
   /**
    * Tests that the module list is retained after enabling/installing/disabling.
    */
-  function testEnableModulesFixedList() {
+  public function testEnableModulesFixedList() {
     // Install system module.
     $this->container->get('module_installer')->install(['system', 'menu_link_content']);
     $entity_manager = \Drupal::entityManager();
@@ -290,7 +290,7 @@ function testEnableModulesFixedList() {
   /**
    * Tests that ThemeManager works right after loading a module.
    */
-  function testEnableModulesTheme() {
+  public function testEnableModulesTheme() {
     /** @var \Drupal\Core\Render\RendererInterface $renderer */
     $renderer = $this->container->get('renderer');
     $original_element = $element = [
@@ -311,7 +311,7 @@ function testEnableModulesTheme() {
   /**
    * Tests that there is no theme by default.
    */
-  function testNoThemeByDefault() {
+  public function testNoThemeByDefault() {
     $themes = $this->config('core.extension')->get('theme');
     $this->assertEqual($themes, []);
 
diff --git a/core/modules/simpletest/src/Tests/SimpleTestTest.php b/core/modules/simpletest/src/Tests/SimpleTestTest.php
index d1f2a20cfda657f1b4221d813bb728b2d56e7bd8..a32c1423692bd3d7eae973aa441a8b23d0238e8e 100644
--- a/core/modules/simpletest/src/Tests/SimpleTestTest.php
+++ b/core/modules/simpletest/src/Tests/SimpleTestTest.php
@@ -110,7 +110,7 @@ class: Drupal\Core\Cache\MemoryBackendFactory
   /**
    * Ensures the tests selected through the web interface are run and displayed.
    */
-  function testWebTestRunner() {
+  public function testWebTestRunner() {
     $this->passMessage = t('SimpleTest pass.');
     $this->failMessage = t('SimpleTest fail.');
     $this->validPermission = 'access administration pages';
@@ -148,7 +148,7 @@ function testWebTestRunner() {
    * Here we force test results which must match the expected results from
    * confirmStubResults().
    */
-  function stubTest() {
+  public function stubTest() {
     // Ensure the .htkey file exists since this is only created just before a
     // request. This allows the stub test to make requests. The event does not
     // fire here and drupal_generate_test_ua() can not generate a key for a
@@ -232,14 +232,14 @@ function stubTest() {
   /**
    * Assert nothing.
    */
-  function assertNothing() {
+  public function assertNothing() {
     $this->pass("This is nothing.");
   }
 
   /**
    * Confirm that the stub test produced the desired results.
    */
-  function confirmStubTestResults() {
+  public function confirmStubTestResults() {
     $this->assertAssertion(t('Unable to install modules %modules due to missing modules %missing.', ['%modules' => 'non_existent_module', '%missing' => 'non_existent_module']), 'Other', 'Fail', 'SimpleTestTest.php', 'Drupal\simpletest\Tests\SimpleTestTest->setUp()');
 
     $this->assertAssertion($this->passMessage, 'Other', 'Pass', 'SimpleTestTest.php', 'Drupal\simpletest\Tests\SimpleTestTest->stubTest()');
@@ -274,7 +274,7 @@ function confirmStubTestResults() {
   /**
    * Fetch the test id from the test results.
    */
-  function getTestIdFromResults() {
+  public function getTestIdFromResults() {
     foreach ($this->childTestResults['assertions'] as $assertion) {
       if (preg_match('@^Test ID is ([0-9]*)\.$@', $assertion['message'], $matches)) {
         return $matches[1];
@@ -299,7 +299,7 @@ function getTestIdFromResults() {
    *
    * @return Assertion result.
    */
-  function assertAssertion($message, $type, $status, $file, $function) {
+  public function assertAssertion($message, $type, $status, $file, $function) {
     $message = trim(strip_tags($message));
     $found = FALSE;
     foreach ($this->childTestResults['assertions'] as $assertion) {
@@ -318,7 +318,7 @@ function assertAssertion($message, $type, $status, $file, $function) {
   /**
    * Get the results from a test and store them in the class array $results.
    */
-  function getTestResults() {
+  public function getTestResults() {
     $results = [];
     if ($this->parse()) {
       if ($details = $this->getResultFieldSet()) {
@@ -347,7 +347,7 @@ function getTestResults() {
   /**
    * Get the details containing the results for group this test is in.
    */
-  function getResultFieldSet() {
+  public function getResultFieldSet() {
     $all_details = $this->xpath('//details');
     foreach ($all_details as $details) {
       if ($this->asText($details->summary) == __CLASS__) {
@@ -366,7 +366,7 @@ function getResultFieldSet() {
    * @return
    *   Extracted text.
    */
-  function asText(\SimpleXMLElement $element) {
+  public function asText(\SimpleXMLElement $element) {
     if (!is_object($element)) {
       return $this->fail('The element is not an element.');
     }
diff --git a/core/modules/simpletest/src/Tests/TimeZoneTest.php b/core/modules/simpletest/src/Tests/TimeZoneTest.php
index 2f33eaa42d64a8ba025fc125a39329d7b2568785..9a98c790205645ce2df7c755349f04c6e65ca50f 100644
--- a/core/modules/simpletest/src/Tests/TimeZoneTest.php
+++ b/core/modules/simpletest/src/Tests/TimeZoneTest.php
@@ -28,7 +28,7 @@ protected function setUp() {
   /**
    * Tests that user accounts have the default time zone set.
    */
-  function testAccountTimeZones() {
+  public function testAccountTimeZones() {
     $expected = 'Australia/Sydney';
     $this->assertEqual($this->rootUser->getTimeZone(), $expected, 'Root user has correct time zone.');
     $this->assertEqual($this->adminUser->getTimeZone(), $expected, 'Admin user has correct time zone.');
diff --git a/core/modules/simpletest/src/WebTestBase.php b/core/modules/simpletest/src/WebTestBase.php
index b1a0258b5718206721901efe0a38856907010754..986410d1979969cbbc9d2a5c7391b004f53d85e8 100644
--- a/core/modules/simpletest/src/WebTestBase.php
+++ b/core/modules/simpletest/src/WebTestBase.php
@@ -203,7 +203,7 @@ abstract class WebTestBase extends TestBase {
   /**
    * Constructor for \Drupal\simpletest\WebTestBase.
    */
-  function __construct($test_id = NULL) {
+  public function __construct($test_id = NULL) {
     parent::__construct($test_id);
     $this->skipClasses[__CLASS__] = TRUE;
     $this->classLoader = require DRUPAL_ROOT . '/autoload.php';
diff --git a/core/modules/simpletest/tests/src/Functional/FolderTest.php b/core/modules/simpletest/tests/src/Functional/FolderTest.php
index 92844d8ed9ff51b0b97bdff925a2106f79ccd2e6..e57813fa71c3956efa44fc626d8640c4d48d6f54 100644
--- a/core/modules/simpletest/tests/src/Functional/FolderTest.php
+++ b/core/modules/simpletest/tests/src/Functional/FolderTest.php
@@ -19,7 +19,7 @@ class FolderTest extends BrowserTestBase {
    */
   public static $modules = ['image'];
 
-  function testFolderSetup() {
+  public function testFolderSetup() {
     $directory = file_default_scheme() . '://styles';
     $this->assertTrue(file_prepare_directory($directory, FALSE), 'Directory created.');
   }
diff --git a/core/modules/simpletest/tests/src/Functional/MailCaptureTest.php b/core/modules/simpletest/tests/src/Functional/MailCaptureTest.php
index 1193e478ed8d9701f1b4ee6ecba7affcf3ba3de2..f610eaf429de0999b232b1349399ce3b166ba431 100644
--- a/core/modules/simpletest/tests/src/Functional/MailCaptureTest.php
+++ b/core/modules/simpletest/tests/src/Functional/MailCaptureTest.php
@@ -18,7 +18,7 @@ class MailCaptureTest extends BrowserTestBase {
   /**
    * Test to see if the wrapper function is executed correctly.
    */
-  function testMailSend() {
+  public function testMailSend() {
     // Create an email.
     $subject = $this->randomString(64);
     $body = $this->randomString(128);
diff --git a/core/modules/simpletest/tests/src/Functional/MissingDependentModuleUnitTest.php b/core/modules/simpletest/tests/src/Functional/MissingDependentModuleUnitTest.php
index 885a44c706e2eaa2f4c5b9ff6c5c0a7005856af4..acd55dd0146ef5695b6422d7a09f38c3f7707e39 100644
--- a/core/modules/simpletest/tests/src/Functional/MissingDependentModuleUnitTest.php
+++ b/core/modules/simpletest/tests/src/Functional/MissingDependentModuleUnitTest.php
@@ -15,7 +15,7 @@ class MissingDependentModuleUnitTest extends BrowserTestBase {
   /**
    * Ensure that this test will not be loaded despite its dependency.
    */
-  function testFail() {
+  public function testFail() {
     $this->fail('Running test with missing required module.');
   }
 
diff --git a/core/modules/simpletest/tests/src/Functional/OtherInstallationProfileTestsTest.php b/core/modules/simpletest/tests/src/Functional/OtherInstallationProfileTestsTest.php
index 04736ec0ed28e5174420e90d633ca5b648bc1283..09ec7b4dbc8c0583bcd70ebbcb96e221098c3370 100644
--- a/core/modules/simpletest/tests/src/Functional/OtherInstallationProfileTestsTest.php
+++ b/core/modules/simpletest/tests/src/Functional/OtherInstallationProfileTestsTest.php
@@ -50,7 +50,7 @@ protected function setUp() {
   /**
    * Tests that tests located in another installation profile appear.
    */
-  function testOtherInstallationProfile() {
+  public function testOtherInstallationProfile() {
     // Assert the existence of a test in a different installation profile than
     // the current.
     $this->drupalGet('admin/config/development/testing');
diff --git a/core/modules/simpletest/tests/src/Functional/UserHelpersTest.php b/core/modules/simpletest/tests/src/Functional/UserHelpersTest.php
index ace0e49a28e0bf07ce14e96563656f454906786f..53ea3079f86c543a2c757aa38759a436e952c80f 100644
--- a/core/modules/simpletest/tests/src/Functional/UserHelpersTest.php
+++ b/core/modules/simpletest/tests/src/Functional/UserHelpersTest.php
@@ -14,7 +14,7 @@ class UserHelpersTest extends BrowserTestBase {
   /**
    * Tests WebTestBase::drupalUserIsLoggedIn().
    */
-  function testDrupalUserIsLoggedIn() {
+  public function testDrupalUserIsLoggedIn() {
     $first_user = $this->drupalCreateUser();
     $second_user = $this->drupalCreateUser();
 
diff --git a/core/modules/statistics/src/Tests/StatisticsAdminTest.php b/core/modules/statistics/src/Tests/StatisticsAdminTest.php
index 35af86b268762c9ba796de2269fce149ad0b8ea1..3ce0457d43b10fbaf9d51dda224b5bd377d505f9 100644
--- a/core/modules/statistics/src/Tests/StatisticsAdminTest.php
+++ b/core/modules/statistics/src/Tests/StatisticsAdminTest.php
@@ -58,7 +58,7 @@ protected function setUp() {
   /**
    * Verifies that the statistics settings page works.
    */
-  function testStatisticsSettings() {
+  public function testStatisticsSettings() {
     $config = $this->config('statistics.settings');
     $this->assertFalse($config->get('count_content_views'), 'Count content view log is disabled by default.');
 
@@ -101,7 +101,7 @@ function testStatisticsSettings() {
   /**
    * Tests that when a node is deleted, the node counter is deleted too.
    */
-  function testDeleteNode() {
+  public function testDeleteNode() {
     $this->config('statistics.settings')->set('count_content_views', 1)->save();
 
     $this->drupalGet('node/' . $this->testNode->id());
@@ -132,7 +132,7 @@ function testDeleteNode() {
   /**
    * Tests that cron clears day counts and expired access logs.
    */
-  function testExpiredLogs() {
+  public function testExpiredLogs() {
     $this->config('statistics.settings')
       ->set('count_content_views', 1)
       ->save();
diff --git a/core/modules/statistics/src/Tests/StatisticsLoggingTest.php b/core/modules/statistics/src/Tests/StatisticsLoggingTest.php
index a7ed5ba0a4050d5b70404c756a58dccc1dc11a4a..152c95ae60dda8467c1bfc428ff6baa3dd25c980 100644
--- a/core/modules/statistics/src/Tests/StatisticsLoggingTest.php
+++ b/core/modules/statistics/src/Tests/StatisticsLoggingTest.php
@@ -88,7 +88,7 @@ protected function setUp() {
   /**
    * Verifies node hit counter logging and script placement.
    */
-  function testLogging() {
+  public function testLogging() {
     $path = 'node/' . $this->node->id();
     $module_path = drupal_get_path('module', 'statistics');
     $stats_path = base_path() . $module_path . '/statistics.php';
diff --git a/core/modules/statistics/src/Tests/StatisticsReportsTest.php b/core/modules/statistics/src/Tests/StatisticsReportsTest.php
index 1524623eee23c937bba38d94cdcaae22f7f2f3a4..ea597f40bbfb2301259d7be5834e2ac08b12767b 100644
--- a/core/modules/statistics/src/Tests/StatisticsReportsTest.php
+++ b/core/modules/statistics/src/Tests/StatisticsReportsTest.php
@@ -17,7 +17,7 @@ class StatisticsReportsTest extends StatisticsTestBase {
   /**
    * Tests the "popular content" block.
    */
-  function testPopularContentBlock() {
+  public function testPopularContentBlock() {
     // Clear the block cache to load the Statistics module's block definitions.
     $this->container->get('plugin.manager.block')->clearCachedDefinitions();
 
diff --git a/core/modules/statistics/tests/src/Functional/StatisticsTokenReplaceTest.php b/core/modules/statistics/tests/src/Functional/StatisticsTokenReplaceTest.php
index 8cf95adb4f7c93d4b19283df4dba45c024a7f9b9..8402d221af0e3fcef82240b16744ff441827dce8 100644
--- a/core/modules/statistics/tests/src/Functional/StatisticsTokenReplaceTest.php
+++ b/core/modules/statistics/tests/src/Functional/StatisticsTokenReplaceTest.php
@@ -12,7 +12,7 @@ class StatisticsTokenReplaceTest extends StatisticsTestBase {
   /**
    * Creates a node, then tests the statistics tokens generated from it.
    */
-  function testStatisticsTokenReplacement() {
+  public function testStatisticsTokenReplacement() {
     $language_interface = \Drupal::languageManager()->getCurrentLanguage();
 
     // Create user and node.
diff --git a/core/modules/syslog/src/Tests/SyslogTest.php b/core/modules/syslog/src/Tests/SyslogTest.php
index f4ab7080eeeeaa1e5838ad15db27fb72eac050ad..47ecb3ffc9b21982c8e905de14216bb47d6ad314 100644
--- a/core/modules/syslog/src/Tests/SyslogTest.php
+++ b/core/modules/syslog/src/Tests/SyslogTest.php
@@ -21,7 +21,7 @@ class SyslogTest extends WebTestBase {
   /**
    * Tests the syslog settings page.
    */
-  function testSettings() {
+  public function testSettings() {
     $admin_user = $this->drupalCreateUser(['administer site configuration']);
     $this->drupalLogin($admin_user);
 
diff --git a/core/modules/system/src/Tests/Ajax/AjaxInGroupTest.php b/core/modules/system/src/Tests/Ajax/AjaxInGroupTest.php
index cb45e2dcf0b81bd435ac3be8a6309825c3501feb..4116f5f892b3ca8fd15a64a55e23ecb8067130dd 100644
--- a/core/modules/system/src/Tests/Ajax/AjaxInGroupTest.php
+++ b/core/modules/system/src/Tests/Ajax/AjaxInGroupTest.php
@@ -17,7 +17,7 @@ protected function setUp() {
   /**
    * Submits forms with select and checkbox elements via Ajax.
    */
-  function testSimpleAjaxFormValue() {
+  public function testSimpleAjaxFormValue() {
     $this->drupalGet('/ajax_forms_test_get_form');
     $this->assertText('Test group');
     $this->assertText('AJAX checkbox in a group');
diff --git a/core/modules/system/src/Tests/Ajax/CommandsTest.php b/core/modules/system/src/Tests/Ajax/CommandsTest.php
index b09d42a0447cc88b103b5aa0bb64741f40431eaa..6970cc30df89537aeef380bdeba6459ffe4c0818 100644
--- a/core/modules/system/src/Tests/Ajax/CommandsTest.php
+++ b/core/modules/system/src/Tests/Ajax/CommandsTest.php
@@ -32,7 +32,7 @@ class CommandsTest extends AjaxTestBase {
   /**
    * Tests the various Ajax Commands.
    */
-  function testAjaxCommands() {
+  public function testAjaxCommands() {
     $form_path = 'ajax_forms_test_ajax_commands_form';
     $web_user = $this->drupalCreateUser(['access content']);
     $this->drupalLogin($web_user);
diff --git a/core/modules/system/src/Tests/Ajax/ElementValidationTest.php b/core/modules/system/src/Tests/Ajax/ElementValidationTest.php
index ceb5405c167d0756483847c88ed095ed76318adb..d20f453be48fd9c65a6285af812d3c41520276db 100644
--- a/core/modules/system/src/Tests/Ajax/ElementValidationTest.php
+++ b/core/modules/system/src/Tests/Ajax/ElementValidationTest.php
@@ -16,7 +16,7 @@ class ElementValidationTest extends AjaxTestBase {
    * filled in, and we want to see if the activation of the "drivertext"
    * Ajax-enabled field fails due to the required field being empty.
    */
-  function testAjaxElementValidation() {
+  public function testAjaxElementValidation() {
     $edit = ['drivertext' => t('some dumb text')];
 
     // Post with 'drivertext' as the triggering element.
diff --git a/core/modules/system/src/Tests/Ajax/FormValuesTest.php b/core/modules/system/src/Tests/Ajax/FormValuesTest.php
index 3d7bc91bced47e2b3585317df692d530779cfbf5..9f4b521752538d4f93b238e9ecbb0dbd141ea31b 100644
--- a/core/modules/system/src/Tests/Ajax/FormValuesTest.php
+++ b/core/modules/system/src/Tests/Ajax/FormValuesTest.php
@@ -19,7 +19,7 @@ protected function setUp() {
   /**
    * Submits forms with select and checkbox elements via Ajax.
    */
-  function testSimpleAjaxFormValue() {
+  public function testSimpleAjaxFormValue() {
     // Verify form values of a select element.
     foreach (['red', 'green', 'blue'] as $item) {
       $edit = [
diff --git a/core/modules/system/src/Tests/Ajax/MultiFormTest.php b/core/modules/system/src/Tests/Ajax/MultiFormTest.php
index 59f60bf5719eaaaf0412f6ec002e169a4d0a8c47..9ca2a667814c6bcee993f16b1fdfac0c1187e3ba 100644
--- a/core/modules/system/src/Tests/Ajax/MultiFormTest.php
+++ b/core/modules/system/src/Tests/Ajax/MultiFormTest.php
@@ -50,7 +50,7 @@ protected function setUp() {
   /**
    * Tests that pages with the 'node_page_form' included twice work correctly.
    */
-  function testMultiForm() {
+  public function testMultiForm() {
     // HTML IDs for elements within the field are potentially modified with
     // each Ajax submission, but these variables are stable and help target the
     // desired elements.
diff --git a/core/modules/system/src/Tests/Batch/PageTest.php b/core/modules/system/src/Tests/Batch/PageTest.php
index 0f24c0fd8074ac80a742a38277aa88b54ab6a42f..dbdf18c3d2f13c76903ba2cd802561972c376fc0 100644
--- a/core/modules/system/src/Tests/Batch/PageTest.php
+++ b/core/modules/system/src/Tests/Batch/PageTest.php
@@ -21,7 +21,7 @@ class PageTest extends WebTestBase {
   /**
    * Tests that the batch API progress page uses the correct theme.
    */
-  function testBatchProgressPageTheme() {
+  public function testBatchProgressPageTheme() {
     // Make sure that the page which starts the batch (an administrative page)
     // is using a different theme than would normally be used by the batch API.
     $this->container->get('theme_handler')->install(['seven', 'bartik']);
@@ -46,7 +46,7 @@ function testBatchProgressPageTheme() {
   /**
    * Tests that the batch API progress page shows the title correctly.
    */
-  function testBatchProgressPageTitle() {
+  public function testBatchProgressPageTitle() {
     // Visit an administrative page that runs a test batch, and check that the
     // title shown during batch execution (which the batch callback function
     // saved as a variable) matches the theme used on the administrative page.
@@ -59,7 +59,7 @@ function testBatchProgressPageTitle() {
   /**
    * Tests that the progress messages are correct.
    */
-  function testBatchProgressMessages() {
+  public function testBatchProgressMessages() {
     // Go to the initial step only.
     $this->maximumMetaRefreshCount = 0;
     $this->drupalGet('batch-test/test-title');
diff --git a/core/modules/system/src/Tests/Batch/ProcessingTest.php b/core/modules/system/src/Tests/Batch/ProcessingTest.php
index 53557ed7a8246fc279096c54e8f98a7f9ea9884f..6b90cc804ca5d5507b3a610efc701a7a4ddf690e 100644
--- a/core/modules/system/src/Tests/Batch/ProcessingTest.php
+++ b/core/modules/system/src/Tests/Batch/ProcessingTest.php
@@ -22,7 +22,7 @@ class ProcessingTest extends WebTestBase {
   /**
    * Tests batches triggered outside of form submission.
    */
-  function testBatchNoForm() {
+  public function testBatchNoForm() {
     // Displaying the page triggers batch 1.
     $this->drupalGet('batch-test/no-form');
     $this->assertBatchMessages($this->_resultMessages('batch_1'), 'Batch for step 2 performed successfully.');
@@ -33,7 +33,7 @@ function testBatchNoForm() {
   /**
    * Tests batches that redirect in the batch finished callback.
    */
-  function testBatchRedirectFinishedCallback() {
+  public function testBatchRedirectFinishedCallback() {
     // Displaying the page triggers batch 1.
     $this->drupalGet('batch-test/finish-redirect');
     $this->assertBatchMessages($this->_resultMessages('batch_1'), 'Batch for step 2 performed successfully.');
@@ -45,7 +45,7 @@ function testBatchRedirectFinishedCallback() {
   /**
    * Tests batches defined in a form submit handler.
    */
-  function testBatchForm() {
+  public function testBatchForm() {
     // Batch 0: no operation.
     $edit = ['batch' => 'batch_0'];
     $this->drupalPostForm('batch-test', $edit, 'Submit');
@@ -89,7 +89,7 @@ function testBatchForm() {
   /**
    * Tests batches defined in a multistep form.
    */
-  function testBatchFormMultistep() {
+  public function testBatchFormMultistep() {
     $this->drupalGet('batch-test/multistep');
     $this->assertNoEscaped('<', 'No escaped markup is present.');
     $this->assertText('step 1', 'Form is displayed in step 1.');
@@ -119,7 +119,7 @@ function testBatchFormMultistep() {
   /**
    * Tests batches defined in different submit handlers on the same form.
    */
-  function testBatchFormMultipleBatches() {
+  public function testBatchFormMultipleBatches() {
     // Batches 1, 2 and 3 are triggered in sequence by different submit
     // handlers. Each submit handler modify the submitted 'value'.
     $value = rand(0, 255);
@@ -138,7 +138,7 @@ function testBatchFormMultipleBatches() {
    *
    * Same as above, but the form is submitted through drupal_form_execute().
    */
-  function testBatchFormProgrammatic() {
+  public function testBatchFormProgrammatic() {
     // Batches 1, 2 and 3 are triggered in sequence by different submit
     // handlers. Each submit handler modify the submitted 'value'.
     $value = rand(0, 255);
@@ -154,7 +154,7 @@ function testBatchFormProgrammatic() {
   /**
    * Test form submission during a batch operation.
    */
-  function testDrupalFormSubmitInBatch() {
+  public function testDrupalFormSubmitInBatch() {
     // Displaying the page triggers a batch that programmatically submits a
     // form.
     $value = rand(0, 255);
@@ -167,7 +167,7 @@ function testDrupalFormSubmitInBatch() {
    *
    * @see https://www.drupal.org/node/600836
    */
-  function testBatchLargePercentage() {
+  public function testBatchLargePercentage() {
     // Displaying the page triggers batch 5.
     $this->drupalGet('batch-test/large-percentage');
     $this->assertBatchMessages($this->_resultMessages('batch_5'), 'Batch for step 2 performed successfully.');
@@ -187,7 +187,7 @@ function testBatchLargePercentage() {
    * @return
    *   TRUE on pass, FALSE on fail.
    */
-  function assertBatchMessages($texts, $message) {
+  public function assertBatchMessages($texts, $message) {
     $pattern = '|' . implode('.*', $texts) . '|s';
     return $this->assertPattern($pattern, $message);
   }
@@ -195,7 +195,7 @@ function assertBatchMessages($texts, $message) {
   /**
    * Returns expected execution stacks for the test batches.
    */
-  function _resultStack($id, $value = 0) {
+  public function _resultStack($id, $value = 0) {
     $stack = [];
     switch ($id) {
       case 'batch_1':
@@ -262,7 +262,7 @@ function _resultStack($id, $value = 0) {
   /**
    * Returns expected result messages for the test batches.
    */
-  function _resultMessages($id) {
+  public function _resultMessages($id) {
     $messages = [];
 
     switch ($id) {
diff --git a/core/modules/system/src/Tests/Cache/CacheTestBase.php b/core/modules/system/src/Tests/Cache/CacheTestBase.php
index 0f0fe847112cb19034e7be447d1a74689f2eca0f..e1bf79828d762c3d47d92ee6c02665ce8b37ea00 100644
--- a/core/modules/system/src/Tests/Cache/CacheTestBase.php
+++ b/core/modules/system/src/Tests/Cache/CacheTestBase.php
@@ -74,7 +74,7 @@ protected function assertCacheExists($message, $var = NULL, $cid = NULL, $bin =
    * @param $bin
    *   The bin the cache item was stored in.
    */
-  function assertCacheRemoved($message, $cid = NULL, $bin = NULL) {
+  public function assertCacheRemoved($message, $cid = NULL, $bin = NULL) {
     if ($bin == NULL) {
       $bin = $this->defaultBin;
     }
diff --git a/core/modules/system/src/Tests/Cache/GenericCacheBackendUnitTestBase.php b/core/modules/system/src/Tests/Cache/GenericCacheBackendUnitTestBase.php
index c30ceffa91efda325aeaf7f9d29df1f01c692f6c..d47e88a51c37fc0abda346a9dd32579a765377b3 100644
--- a/core/modules/system/src/Tests/Cache/GenericCacheBackendUnitTestBase.php
+++ b/core/modules/system/src/Tests/Cache/GenericCacheBackendUnitTestBase.php
@@ -494,7 +494,7 @@ public function testDeleteAll() {
    * Test Drupal\Core\Cache\CacheBackendInterface::invalidate() and
    * Drupal\Core\Cache\CacheBackendInterface::invalidateMultiple().
    */
-  function testInvalidate() {
+  public function testInvalidate() {
     $backend = $this->getCacheBackend();
     $backend->set('test1', 1);
     $backend->set('test2', 2);
@@ -526,7 +526,7 @@ function testInvalidate() {
   /**
    * Tests Drupal\Core\Cache\CacheBackendInterface::invalidateTags().
    */
-  function testInvalidateTags() {
+  public function testInvalidateTags() {
     $backend = $this->getCacheBackend();
 
     // Create two cache entries with the same tag and tag value.
diff --git a/core/modules/system/src/Tests/Cache/SessionExistsCacheContextTest.php b/core/modules/system/src/Tests/Cache/SessionExistsCacheContextTest.php
index b3c195d5651821c9291abefd99387581694af4d0..8815bf340f33ddf6d63073ff3fa13d8003b3a8f5 100644
--- a/core/modules/system/src/Tests/Cache/SessionExistsCacheContextTest.php
+++ b/core/modules/system/src/Tests/Cache/SessionExistsCacheContextTest.php
@@ -58,7 +58,7 @@ public function testCacheContext() {
   /**
    * Asserts whether a session cookie is present on the client or not.
    */
-  function assertSessionCookieOnClient($expected_present) {
+  public function assertSessionCookieOnClient($expected_present) {
     $non_deleted_cookies = array_filter($this->cookies, function ($item) { return $item['value'] !== 'deleted'; });
     $this->assertEqual($expected_present, isset($non_deleted_cookies[$this->getSessionName()]), 'Session cookie exists.');
   }
diff --git a/core/modules/system/src/Tests/Common/AddFeedTest.php b/core/modules/system/src/Tests/Common/AddFeedTest.php
index b959d42524dcc2810baaef816cfd6515a96a3d29..40ff215dfd5107e200c199c606c36229e0db4279 100644
--- a/core/modules/system/src/Tests/Common/AddFeedTest.php
+++ b/core/modules/system/src/Tests/Common/AddFeedTest.php
@@ -15,7 +15,7 @@ class AddFeedTest extends WebTestBase {
   /**
    * Tests attaching feeds with paths, URLs, and titles.
    */
-  function testBasicFeedAddNoTitle() {
+  public function testBasicFeedAddNoTitle() {
     $path = $this->randomMachineName(12);
     $external_url = 'http://' . $this->randomMachineName(12) . '/' . $this->randomMachineName(12);
     $fully_qualified_local_url = Url::fromUri('base:' . $this->randomMachineName(12), ['absolute' => TRUE])->toString();
@@ -70,7 +70,7 @@ function testBasicFeedAddNoTitle() {
   /**
    * Creates a pattern representing the RSS feed in the page.
    */
-  function urlToRSSLinkPattern($url, $title = '') {
+  public function urlToRSSLinkPattern($url, $title = '') {
     // Escape any regular expression characters in the URL ('?' is the worst).
     $url = preg_replace('/([+?.*])/', '[$0]', $url);
     $generated_pattern = '%<link +href="' . $url . '" +rel="alternate" +title="' . $title . '" +type="application/rss.xml" */>%';
@@ -82,7 +82,7 @@ function urlToRSSLinkPattern($url, $title = '') {
    *
    * @see https://www.drupal.org/node/1211668
    */
-  function testFeedIconEscaping() {
+  public function testFeedIconEscaping() {
     $variables = [
       '#theme' => 'feed_icon',
       '#url' => 'node',
diff --git a/core/modules/system/src/Tests/Common/AlterTest.php b/core/modules/system/src/Tests/Common/AlterTest.php
index 2f19ab298f5422254fb7de8ccea5b8ea0593f3a8..863bd54de4a88a024cd9bb58bb5ceb864ae2ca88 100644
--- a/core/modules/system/src/Tests/Common/AlterTest.php
+++ b/core/modules/system/src/Tests/Common/AlterTest.php
@@ -21,7 +21,7 @@ class AlterTest extends WebTestBase {
   /**
    * Tests if the theme has been altered.
    */
-  function testDrupalAlter() {
+  public function testDrupalAlter() {
     // This test depends on Bartik, so make sure that it is always the current
     // active theme.
     \Drupal::service('theme_handler')->install(['bartik']);
diff --git a/core/modules/system/src/Tests/Common/EarlyRenderingControllerTest.php b/core/modules/system/src/Tests/Common/EarlyRenderingControllerTest.php
index 196d4631128cd589252e5bea3585bda969e29908..1afdd4eeb37955d0b7501dd8259d8c88fb7a5b23 100644
--- a/core/modules/system/src/Tests/Common/EarlyRenderingControllerTest.php
+++ b/core/modules/system/src/Tests/Common/EarlyRenderingControllerTest.php
@@ -25,7 +25,7 @@ class EarlyRenderingControllerTest extends WebTestBase {
   /**
    * Tests theme preprocess functions being able to attach assets.
    */
-  function testEarlyRendering() {
+  public function testEarlyRendering() {
     // Render array: non-early & early.
     $this->drupalGet(Url::fromRoute('early_rendering_controller_test.render_array'));
     $this->assertResponse(200);
diff --git a/core/modules/system/src/Tests/Common/FormatDateTest.php b/core/modules/system/src/Tests/Common/FormatDateTest.php
index c6a57c96b8df476c71d0ad37c40030d33fae0a59..c174e3432bd04388d174a00d664c4fa960b5c7ad 100644
--- a/core/modules/system/src/Tests/Common/FormatDateTest.php
+++ b/core/modules/system/src/Tests/Common/FormatDateTest.php
@@ -50,7 +50,7 @@ protected function setUp() {
   /**
    * Tests admin-defined formats in format_date().
    */
-  function testAdminDefinedFormatDate() {
+  public function testAdminDefinedFormatDate() {
     // Create and log in an admin user.
     $this->drupalLogin($this->drupalCreateUser(['administer site configuration']));
 
diff --git a/core/modules/system/src/Tests/Common/RenderWebTest.php b/core/modules/system/src/Tests/Common/RenderWebTest.php
index 49449d477988d594bbbd46bb985dbceea9568913..ed0e0864026f065d45ecd6f9d3432c35dc5c3f4e 100644
--- a/core/modules/system/src/Tests/Common/RenderWebTest.php
+++ b/core/modules/system/src/Tests/Common/RenderWebTest.php
@@ -24,7 +24,7 @@ class RenderWebTest extends WebTestBase {
   /**
    * Asserts the cache context for the wrapper format is always present.
    */
-  function testWrapperFormatCacheContext() {
+  public function testWrapperFormatCacheContext() {
     $this->drupalGet('common-test/type-link-active-class');
     $this->assertIdentical(0, strpos($this->getRawContent(), "<!DOCTYPE html>\n<html"));
     $this->assertIdentical('text/html; charset=UTF-8', $this->drupalGetHeader('Content-Type'));
@@ -43,7 +43,7 @@ function testWrapperFormatCacheContext() {
    * Tests rendering form elements without passing through
    * \Drupal::formBuilder()->doBuildForm().
    */
-  function testDrupalRenderFormElements() {
+  public function testDrupalRenderFormElements() {
     // Define a series of form elements.
     $element = [
       '#type' => 'button',
diff --git a/core/modules/system/src/Tests/Common/SimpleTestErrorCollectorTest.php b/core/modules/system/src/Tests/Common/SimpleTestErrorCollectorTest.php
index 016d23c3ad5ce20e2d8b0aaa90d1b47274e86ac0..9af773b86cda026f7f2ef66680376f39ed282dd3 100644
--- a/core/modules/system/src/Tests/Common/SimpleTestErrorCollectorTest.php
+++ b/core/modules/system/src/Tests/Common/SimpleTestErrorCollectorTest.php
@@ -31,7 +31,7 @@ class SimpleTestErrorCollectorTest extends WebTestBase {
   /**
    * Tests that simpletest collects errors from the tested site.
    */
-  function testErrorCollect() {
+  public function testErrorCollect() {
     $this->collectedErrors = [];
     $this->drupalGet('error-test/generate-warnings-with-report');
     $this->assertEqual(count($this->collectedErrors), 3, 'Three errors were collected');
@@ -82,7 +82,7 @@ protected function error($message = '', $group = 'Other', array $caller = NULL)
   /**
    * Asserts that a collected error matches what we are expecting.
    */
-  function assertError($error, $group, $function, $file, $message = NULL) {
+  public function assertError($error, $group, $function, $file, $message = NULL) {
     $this->assertEqual($error['group'], $group, format_string("Group was %group", ['%group' => $group]));
     $this->assertEqual($error['caller']['function'], $function, format_string("Function was %function", ['%function' => $function]));
     $this->assertEqual(drupal_basename($error['caller']['file']), $file, format_string("File was %file", ['%file' => $file]));
diff --git a/core/modules/system/src/Tests/Common/UrlTest.php b/core/modules/system/src/Tests/Common/UrlTest.php
index da839869764fcbce4fe3846567b2a003d86d539a..d72f8e5294c99f5e08122f8a4e025d995fe7707b 100644
--- a/core/modules/system/src/Tests/Common/UrlTest.php
+++ b/core/modules/system/src/Tests/Common/UrlTest.php
@@ -25,7 +25,7 @@ class UrlTest extends WebTestBase {
   /**
    * Confirms that invalid URLs are filtered in link generating functions.
    */
-  function testLinkXSS() {
+  public function testLinkXSS() {
     // Test \Drupal::l().
     $text = $this->randomMachineName();
     $path = "<SCRIPT>alert('XSS')</SCRIPT>";
@@ -42,7 +42,7 @@ function testLinkXSS() {
   /**
    * Tests that #type=link bubbles outbound route/path processors' metadata.
    */
-  function testLinkBubbleableMetadata() {
+  public function testLinkBubbleableMetadata() {
     $cases = [
       ['Regular link', 'internal:/user', [], ['contexts' => [], 'tags' => [], 'max-age' => Cache::PERMANENT], []],
       ['Regular link, absolute', 'internal:/user', ['absolute' => TRUE], ['contexts' => ['url.site'], 'tags' => [], 'max-age' => Cache::PERMANENT], []],
@@ -71,7 +71,7 @@ function testLinkBubbleableMetadata() {
   /**
    * Tests that default and custom attributes are handled correctly on links.
    */
-  function testLinkAttributes() {
+  public function testLinkAttributes() {
     /** @var \Drupal\Core\Render\RendererInterface $renderer */
     $renderer = $this->container->get('renderer');
 
@@ -160,7 +160,7 @@ function testLinkAttributes() {
   /**
    * Tests that link functions support render arrays as 'text'.
    */
-  function testLinkRenderArrayText() {
+  public function testLinkRenderArrayText() {
     /** @var \Drupal\Core\Render\RendererInterface $renderer */
     $renderer = $this->container->get('renderer');
 
@@ -211,7 +211,7 @@ private function hasAttribute($attribute, $link, $class) {
   /**
    * Tests UrlHelper::filterQueryParameters().
    */
-  function testDrupalGetQueryParameters() {
+  public function testDrupalGetQueryParameters() {
     $original = [
       'a' => 1,
       'b' => [
@@ -247,7 +247,7 @@ function testDrupalGetQueryParameters() {
   /**
    * Tests UrlHelper::parse().
    */
-  function testDrupalParseUrl() {
+  public function testDrupalParseUrl() {
     // Relative, absolute, and external URLs, without/with explicit script path,
     // without/with Drupal path.
     foreach (['', '/', 'https://www.drupal.org/'] as $absolute) {
@@ -285,7 +285,7 @@ function testDrupalParseUrl() {
   /**
    * Tests external URL handling.
    */
-  function testExternalUrls() {
+  public function testExternalUrls() {
     $test_url = 'https://www.drupal.org/';
 
     // Verify external URL can contain a fragment.
diff --git a/core/modules/system/src/Tests/Condition/ConditionFormTest.php b/core/modules/system/src/Tests/Condition/ConditionFormTest.php
index 8d2ea6d330bed1e759c13c70bb263e7e6d7196df..42945b250a805f6a4f05f490dfe93c91c1cf4df1 100644
--- a/core/modules/system/src/Tests/Condition/ConditionFormTest.php
+++ b/core/modules/system/src/Tests/Condition/ConditionFormTest.php
@@ -21,7 +21,7 @@ class ConditionFormTest extends WebTestBase {
   /**
    * Submit the condition_node_type_test_form to test condition forms.
    */
-  function testConfigForm() {
+  public function testConfigForm() {
     $this->drupalCreateContentType(['type' => 'page', 'name' => 'Page']);
     $this->drupalCreateContentType(['type' => 'article', 'name' => 'Article']);
 
diff --git a/core/modules/system/src/Tests/Database/SelectPagerDefaultTest.php b/core/modules/system/src/Tests/Database/SelectPagerDefaultTest.php
index e56c19f91f16682f21c878da34a76ebbc7d1487a..a264d33ea6099915632e0e655cd4bcf8c093c716 100644
--- a/core/modules/system/src/Tests/Database/SelectPagerDefaultTest.php
+++ b/core/modules/system/src/Tests/Database/SelectPagerDefaultTest.php
@@ -16,7 +16,7 @@ class SelectPagerDefaultTest extends DatabaseWebTestBase {
    * Note that we have to make an HTTP request to a test page handler
    * because the pager depends on GET parameters.
    */
-  function testEvenPagerQuery() {
+  public function testEvenPagerQuery() {
     // To keep the test from being too brittle, we determine up front
     // what the page count should be dynamically, and pass the control
     // information forward to the actual query on the other side of the
@@ -50,7 +50,7 @@ function testEvenPagerQuery() {
    * Note that we have to make an HTTP request to a test page handler
    * because the pager depends on GET parameters.
    */
-  function testOddPagerQuery() {
+  public function testOddPagerQuery() {
     // To keep the test from being too brittle, we determine up front
     // what the page count should be dynamically, and pass the control
     // information forward to the actual query on the other side of the
@@ -83,7 +83,7 @@ function testOddPagerQuery() {
    *
    * This is a regression test for #467984.
    */
-  function testInnerPagerQuery() {
+  public function testInnerPagerQuery() {
     $query = db_select('test', 't')
       ->extend('Drupal\Core\Database\Query\PagerSelectExtender');
     $query
@@ -105,7 +105,7 @@ function testInnerPagerQuery() {
    *
    * This is a regression test for #467984.
    */
-  function testHavingPagerQuery() {
+  public function testHavingPagerQuery() {
     $query = db_select('test', 't')
       ->extend('Drupal\Core\Database\Query\PagerSelectExtender');
     $query
@@ -124,7 +124,7 @@ function testHavingPagerQuery() {
   /**
    * Confirms that every pager gets a valid, non-overlapping element ID.
    */
-  function testElementNumbers() {
+  public function testElementNumbers() {
 
     $request = Request::createFromGlobals();
     $request->query->replace([
diff --git a/core/modules/system/src/Tests/Database/SelectTableSortDefaultTest.php b/core/modules/system/src/Tests/Database/SelectTableSortDefaultTest.php
index 8ed05bd5c1fadbab0ba37da35ff39f7882092f02..97a676b162826e113cb90afa7e35eafc3d1135d6 100644
--- a/core/modules/system/src/Tests/Database/SelectTableSortDefaultTest.php
+++ b/core/modules/system/src/Tests/Database/SelectTableSortDefaultTest.php
@@ -15,7 +15,7 @@ class SelectTableSortDefaultTest extends DatabaseWebTestBase {
    * Note that we have to make an HTTP request to a test page handler
    * because the pager depends on GET parameters.
    */
-  function testTableSortQuery() {
+  public function testTableSortQuery() {
     $sorts = [
       ['field' => t('Task ID'), 'sort' => 'desc', 'first' => 'perform at superbowl', 'last' => 'eat'],
       ['field' => t('Task ID'), 'sort' => 'asc', 'first' => 'eat', 'last' => 'perform at superbowl'],
@@ -43,7 +43,7 @@ function testTableSortQuery() {
    * If a tablesort's orderByHeader is called before another orderBy, then its
    * header happens first.
    */
-  function testTableSortQueryFirst() {
+  public function testTableSortQueryFirst() {
     $sorts = [
       ['field' => t('Task ID'), 'sort' => 'desc', 'first' => 'perform at superbowl', 'last' => 'eat'],
       ['field' => t('Task ID'), 'sort' => 'asc', 'first' => 'eat', 'last' => 'perform at superbowl'],
@@ -71,7 +71,7 @@ function testTableSortQueryFirst() {
    * Specifically that no sort is set in a tableselect, and that header links
    * are correct.
    */
-  function testTableSortDefaultSort() {
+  public function testTableSortDefaultSort() {
     $this->drupalGet('database_test/tablesort_default_sort');
 
     // Verify that the table was displayed. Just the header is checked for
diff --git a/core/modules/system/src/Tests/Database/TemporaryQueryTest.php b/core/modules/system/src/Tests/Database/TemporaryQueryTest.php
index fd75df3655bfc5dea78af32ba091cbce3c5a28e5..d0dce74e46a252b0233fe86d3aef900e5df6cb22 100644
--- a/core/modules/system/src/Tests/Database/TemporaryQueryTest.php
+++ b/core/modules/system/src/Tests/Database/TemporaryQueryTest.php
@@ -19,14 +19,14 @@ class TemporaryQueryTest extends DatabaseWebTestBase {
   /**
    * Returns the number of rows of a table.
    */
-  function countTableRows($table_name) {
+  public function countTableRows($table_name) {
     return db_select($table_name)->countQuery()->execute()->fetchField();
   }
 
   /**
    * Confirms that temporary tables work and are limited to one request.
    */
-  function testTemporaryQuery() {
+  public function testTemporaryQuery() {
     $this->drupalGet('database_test/db_query_temporary');
     $data = json_decode($this->getRawContent());
     if ($data) {
diff --git a/core/modules/system/src/Tests/Entity/EntityFormTest.php b/core/modules/system/src/Tests/Entity/EntityFormTest.php
index 8bcb0c591cdc4c075d38b63fa312c5c51248453d..2ebc35061782bebc71f06d3f3dabd6afeeeb7463 100644
--- a/core/modules/system/src/Tests/Entity/EntityFormTest.php
+++ b/core/modules/system/src/Tests/Entity/EntityFormTest.php
@@ -31,7 +31,7 @@ protected function setUp() {
   /**
    * Tests basic form CRUD functionality.
    */
-  function testFormCRUD() {
+  public function testFormCRUD() {
     // All entity variations have to have the same results.
     foreach (entity_test_entity_types() as $entity_type) {
       $this->doTestFormCRUD($entity_type);
@@ -53,7 +53,7 @@ public function testMultilingualFormCRUD() {
    *
    * @see entity_test_entity_form_display_alter()
    */
-  function testEntityFormDisplayAlter() {
+  public function testEntityFormDisplayAlter() {
     $this->drupalGet('entity_test/add');
     $altered_field = $this->xpath('//input[@name="field_test_text[0][value]" and @size="42"]');
     $this->assertTrue(count($altered_field) === 1, 'The altered field has the correct size value.');
diff --git a/core/modules/system/src/Tests/Entity/EntityTranslationFormTest.php b/core/modules/system/src/Tests/Entity/EntityTranslationFormTest.php
index e2854d272110e3ba233d5c5aace5b426063251e2..f5134249a72ab6fa872238b4e2fcbddfeaef9ad6 100644
--- a/core/modules/system/src/Tests/Entity/EntityTranslationFormTest.php
+++ b/core/modules/system/src/Tests/Entity/EntityTranslationFormTest.php
@@ -43,7 +43,7 @@ protected function setUp() {
   /**
    * Tests entity form language.
    */
-  function testEntityFormLanguage() {
+  public function testEntityFormLanguage() {
     $this->drupalCreateContentType(['type' => 'page', 'name' => 'Basic page']);
 
     $web_user = $this->drupalCreateUser(['create page content', 'edit own page content', 'administer content types']);
diff --git a/core/modules/system/src/Tests/Entity/Update/UpdateApiEntityDefinitionUpdateTest.php b/core/modules/system/src/Tests/Entity/Update/UpdateApiEntityDefinitionUpdateTest.php
index ceab801e3c0dee5268333505575e6a68322eee96..ddc52fe52cd4ff261317bde01b1d7e68afa74f82 100644
--- a/core/modules/system/src/Tests/Entity/Update/UpdateApiEntityDefinitionUpdateTest.php
+++ b/core/modules/system/src/Tests/Entity/Update/UpdateApiEntityDefinitionUpdateTest.php
@@ -134,7 +134,7 @@ public function testMultipleUpdates() {
   /**
    * Tests that entity updates are correctly reported in the status report page.
    */
-  function testStatusReport() {
+  public function testStatusReport() {
     // Create a test entity.
     $entity = EntityTest::create(['name' => $this->randomString(), 'user_id' => mt_rand()]);
     $entity->save();
diff --git a/core/modules/system/src/Tests/Form/AlterTest.php b/core/modules/system/src/Tests/Form/AlterTest.php
index e77cf301376e1537f681979f7134be615251d0e8..216e5d2014037a23022926b917909acb0bb14646 100644
--- a/core/modules/system/src/Tests/Form/AlterTest.php
+++ b/core/modules/system/src/Tests/Form/AlterTest.php
@@ -22,7 +22,7 @@ class AlterTest extends WebTestBase {
   /**
    * Tests execution order of hook_form_alter() and hook_form_FORM_ID_alter().
    */
-  function testExecutionOrder() {
+  public function testExecutionOrder() {
     $this->drupalGet('form-test/alter');
     // Ensure that the order is first by module, then for a given module, the
     // id-specific one after the generic one.
diff --git a/core/modules/system/src/Tests/Form/ArbitraryRebuildTest.php b/core/modules/system/src/Tests/Form/ArbitraryRebuildTest.php
index 95324c96da30b5c1821e25cabdb74dcd74bf35e3..d6e99705e753975c69b0adaf407d0ee7b86968bc 100644
--- a/core/modules/system/src/Tests/Form/ArbitraryRebuildTest.php
+++ b/core/modules/system/src/Tests/Form/ArbitraryRebuildTest.php
@@ -48,7 +48,7 @@ protected function setUp() {
   /**
    * Tests a basic rebuild with the user registration form.
    */
-  function testUserRegistrationRebuild() {
+  public function testUserRegistrationRebuild() {
     $edit = [
       'name' => 'foo',
       'mail' => 'bar@example.com',
@@ -62,7 +62,7 @@ function testUserRegistrationRebuild() {
   /**
    * Tests a rebuild caused by a multiple value field.
    */
-  function testUserRegistrationMultipleField() {
+  public function testUserRegistrationMultipleField() {
     $edit = [
       'name' => 'foo',
       'mail' => 'bar@example.com',
diff --git a/core/modules/system/src/Tests/Form/CheckboxTest.php b/core/modules/system/src/Tests/Form/CheckboxTest.php
index 0e17309d0fef81bc796303f17024ea4db5e117f2..61e7bd9ba5804cd3567a7408f1add70d09e8715d 100644
--- a/core/modules/system/src/Tests/Form/CheckboxTest.php
+++ b/core/modules/system/src/Tests/Form/CheckboxTest.php
@@ -19,7 +19,7 @@ class CheckboxTest extends WebTestBase {
    */
   public static $modules = ['form_test'];
 
-  function testFormCheckbox() {
+  public function testFormCheckbox() {
     // Ensure that the checked state is determined and rendered correctly for
     // tricky combinations of default and return values.
     foreach ([FALSE, NULL, TRUE, 0, '0', '', 1, '1', 'foobar', '1foobar'] as $default_value) {
diff --git a/core/modules/system/src/Tests/Form/ConfirmFormTest.php b/core/modules/system/src/Tests/Form/ConfirmFormTest.php
index a26d493e6bb51bdbad4269bac5b480d69acd074d..31ede02a723e1a3d7552f005612a3df783cb1e84 100644
--- a/core/modules/system/src/Tests/Form/ConfirmFormTest.php
+++ b/core/modules/system/src/Tests/Form/ConfirmFormTest.php
@@ -20,7 +20,7 @@ class ConfirmFormTest extends WebTestBase {
    */
   public static $modules = ['form_test'];
 
-  function testConfirmForm() {
+  public function testConfirmForm() {
     // Test the building of the form.
     $this->drupalGet('form-test/confirm-form');
     $site_name = $this->config('system.site')->get('name');
diff --git a/core/modules/system/src/Tests/Form/ElementTest.php b/core/modules/system/src/Tests/Form/ElementTest.php
index 5b63c6b11e96584cfccaf35554ec210ba39363d3..0e1c3ce0cb8a7579ddd1c08b2759e22f4d0faea5 100644
--- a/core/modules/system/src/Tests/Form/ElementTest.php
+++ b/core/modules/system/src/Tests/Form/ElementTest.php
@@ -21,7 +21,7 @@ class ElementTest extends WebTestBase {
   /**
    * Tests placeholder text for elements that support placeholders.
    */
-  function testPlaceHolderText() {
+  public function testPlaceHolderText() {
     $this->drupalGet('form-test/placeholder-text');
     $expected = 'placeholder-text';
     // Test to make sure non-textarea elements have the proper placeholder text.
@@ -44,7 +44,7 @@ function testPlaceHolderText() {
   /**
    * Tests expansion of #options for #type checkboxes and radios.
    */
-  function testOptions() {
+  public function testOptions() {
     $this->drupalGet('form-test/checkboxes-radios');
 
     // Verify that all options appear in their defined order.
@@ -91,7 +91,7 @@ function testOptions() {
   /**
    * Tests wrapper ids for checkboxes and radios.
    */
-  function testWrapperIds() {
+  public function testWrapperIds() {
     $this->drupalGet('form-test/checkboxes-radios');
 
     // Verify that wrapper id is different from element id.
@@ -106,7 +106,7 @@ function testWrapperIds() {
   /**
    * Tests button classes.
    */
-  function testButtonClasses() {
+  public function testButtonClasses() {
     $this->drupalGet('form-test/button-class');
     // Just contains(@class, "button") won't do because then
     // "button--foo" would contain "button". Instead, check
@@ -120,7 +120,7 @@ function testButtonClasses() {
   /**
    * Tests the #group property.
    */
-  function testGroupElements() {
+  public function testGroupElements() {
     $this->drupalGet('form-test/group-details');
     $elements = $this->xpath('//div[@class="details-wrapper"]//div[@class="details-wrapper"]//label');
     $this->assertTrue(count($elements) == 1);
diff --git a/core/modules/system/src/Tests/Form/ElementsLabelsTest.php b/core/modules/system/src/Tests/Form/ElementsLabelsTest.php
index 02f4659f1206deb29dd4b33a0a211393158007ea..2a57e5d70b15a0df7ee12f6222ea8dda256045d5 100644
--- a/core/modules/system/src/Tests/Form/ElementsLabelsTest.php
+++ b/core/modules/system/src/Tests/Form/ElementsLabelsTest.php
@@ -22,7 +22,7 @@ class ElementsLabelsTest extends WebTestBase {
    * Test form elements, labels, title attributes and required marks output
    * correctly and have the correct label option class if needed.
    */
-  function testFormLabels() {
+  public function testFormLabels() {
     $this->drupalGet('form_test/form-labels');
 
     // Check that the checkbox/radio processing is not interfering with
@@ -99,7 +99,7 @@ function testFormLabels() {
   /**
    * Tests different display options for form element descriptions.
    */
-  function testFormDescriptions() {
+  public function testFormDescriptions() {
     $this->drupalGet('form_test/form-descriptions');
 
     // Check #description placement with #description_display='after'.
@@ -126,7 +126,7 @@ function testFormDescriptions() {
   /**
    * Test forms in theme-less environments.
    */
-  function testFormsInThemeLessEnvironments() {
+  public function testFormsInThemeLessEnvironments() {
     $form = $this->getFormWithLimitedProperties();
     $render_service = $this->container->get('renderer');
     // This should not throw any notices.
diff --git a/core/modules/system/src/Tests/Form/ElementsTableSelectTest.php b/core/modules/system/src/Tests/Form/ElementsTableSelectTest.php
index e09ba776aeb2e7c29f2f7380c51757743d02f8b0..208f85911d874a48cd4dba44767471f5e6ca2250 100644
--- a/core/modules/system/src/Tests/Form/ElementsTableSelectTest.php
+++ b/core/modules/system/src/Tests/Form/ElementsTableSelectTest.php
@@ -22,7 +22,7 @@ class ElementsTableSelectTest extends WebTestBase {
   /**
    * Test the display of checkboxes when #multiple is TRUE.
    */
-  function testMultipleTrue() {
+  public function testMultipleTrue() {
 
     $this->drupalGet('form_test/tableselect/multiple-true');
 
@@ -40,7 +40,7 @@ function testMultipleTrue() {
   /**
    * Test the presence of ajax functionality for all options.
    */
-  function testAjax() {
+  public function testAjax() {
     $rows = ['row1', 'row2', 'row3'];
     // Test checkboxes (#multiple == TRUE).
     foreach ($rows as $row) {
@@ -61,7 +61,7 @@ function testAjax() {
   /**
    * Test the display of radios when #multiple is FALSE.
    */
-  function testMultipleFalse() {
+  public function testMultipleFalse() {
     $this->drupalGet('form_test/tableselect/multiple-false');
 
     $this->assertNoText(t('Empty text.'), 'Empty text should not be displayed.');
@@ -78,7 +78,7 @@ function testMultipleFalse() {
   /**
    * Tests the display when #colspan is set.
    */
-  function testTableselectColSpan() {
+  public function testTableselectColSpan() {
     $this->drupalGet('form_test/tableselect/colspan');
 
     $this->assertText(t('Three'), 'Presence of the third column');
@@ -103,7 +103,7 @@ function testTableselectColSpan() {
   /**
    * Test the display of the #empty text when #options is an empty array.
    */
-  function testEmptyText() {
+  public function testEmptyText() {
     $this->drupalGet('form_test/tableselect/empty-text');
     $this->assertText(t('Empty text.'), 'Empty text should be displayed.');
   }
@@ -111,7 +111,7 @@ function testEmptyText() {
   /**
    * Test the submission of single and multiple values when #multiple is TRUE.
    */
-  function testMultipleTrueSubmit() {
+  public function testMultipleTrueSubmit() {
 
     // Test a submission with one checkbox checked.
     $edit = [];
@@ -136,7 +136,7 @@ function testMultipleTrueSubmit() {
   /**
    * Test submission of values when #multiple is FALSE.
    */
-  function testMultipleFalseSubmit() {
+  public function testMultipleFalseSubmit() {
     $edit['tableselect'] = 'row1';
     $this->drupalPostForm('form_test/tableselect/multiple-false', $edit, 'Submit');
     $this->assertText(t('Submitted: row1'), 'Selected radio button');
@@ -145,7 +145,7 @@ function testMultipleFalseSubmit() {
   /**
    * Test the #js_select property.
    */
-  function testAdvancedSelect() {
+  public function testAdvancedSelect() {
     // When #multiple = TRUE a Select all checkbox should be displayed by default.
     $this->drupalGet('form_test/tableselect/advanced-select/multiple-true-default');
     $this->assertFieldByXPath('//th[@class="select-all"]', NULL, 'Display a "Select all" checkbox by default when #multiple is TRUE.');
@@ -166,7 +166,7 @@ function testAdvancedSelect() {
   /**
    * Test the whether the option checker gives an error on invalid tableselect values for checkboxes.
    */
-  function testMultipleTrueOptionchecker() {
+  public function testMultipleTrueOptionchecker() {
 
     list($header, $options) = _form_test_tableselect_get_data();
 
@@ -190,7 +190,7 @@ function testMultipleTrueOptionchecker() {
   /**
    * Test the whether the option checker gives an error on invalid tableselect values for radios.
    */
-  function testMultipleFalseOptionchecker() {
+  public function testMultipleFalseOptionchecker() {
 
     list($header, $options) = _form_test_tableselect_get_data();
 
diff --git a/core/modules/system/src/Tests/Form/ElementsVerticalTabsTest.php b/core/modules/system/src/Tests/Form/ElementsVerticalTabsTest.php
index 73d5dfabb702697a37b36605871b429ade33b792..3ef90e13a190d86bd491232d518b7f732bf6f498 100644
--- a/core/modules/system/src/Tests/Form/ElementsVerticalTabsTest.php
+++ b/core/modules/system/src/Tests/Form/ElementsVerticalTabsTest.php
@@ -47,7 +47,7 @@ protected function setUp() {
    *
    * Otherwise, collapse.js adds "SHOW" or "HIDE" labels to the tabs.
    */
-  function testJavaScriptOrdering() {
+  public function testJavaScriptOrdering() {
     $this->drupalGet('form_test/vertical-tabs');
     $position1 = strpos($this->content, 'core/misc/vertical-tabs.js');
     $position2 = strpos($this->content, 'core/misc/collapse.js');
@@ -57,7 +57,7 @@ function testJavaScriptOrdering() {
   /**
    * Ensures that vertical tab markup is not shown if user has no tab access.
    */
-  function testWrapperNotShownWhenEmpty() {
+  public function testWrapperNotShownWhenEmpty() {
     // Test admin user can see vertical tabs and wrapper.
     $this->drupalGet('form_test/vertical-tabs');
     $wrapper = $this->xpath("//div[@data-vertical-tabs-panes]");
@@ -73,7 +73,7 @@ function testWrapperNotShownWhenEmpty() {
   /**
    * Ensures that default vertical tab is correctly selected.
    */
-  function testDefaultTab() {
+  public function testDefaultTab() {
     $this->drupalGet('form_test/vertical-tabs');
     $this->assertFieldByName('vertical_tabs__active_tab', 'edit-tab3', t('The default vertical tab is correctly selected.'));
   }
@@ -81,7 +81,7 @@ function testDefaultTab() {
   /**
    * Ensures that vertical tab form values are cleaned.
    */
-  function testDefaultTabCleaned() {
+  public function testDefaultTabCleaned() {
     $values = Json::decode($this->drupalPostForm('form_test/form-state-values-clean', [], t('Submit')));
     $this->assertFalse(isset($values['vertical_tabs__active_tab']), SafeMarkup::format('%element was removed.', ['%element' => 'vertical_tabs__active_tab']));
   }
diff --git a/core/modules/system/src/Tests/Form/EmailTest.php b/core/modules/system/src/Tests/Form/EmailTest.php
index ae925a996d6e79b381f35f98fa95fdf800a26fe6..a9d445d63323f7e3a8b7755c66f47225ecf88e5b 100644
--- a/core/modules/system/src/Tests/Form/EmailTest.php
+++ b/core/modules/system/src/Tests/Form/EmailTest.php
@@ -24,7 +24,7 @@ class EmailTest extends WebTestBase {
   /**
    * Tests that #type 'email' fields are properly validated.
    */
-  function testFormEmail() {
+  public function testFormEmail() {
     $edit = [];
     $edit['email'] = 'invalid';
     $edit['email_required'] = ' ';
diff --git a/core/modules/system/src/Tests/Form/FormTest.php b/core/modules/system/src/Tests/Form/FormTest.php
index fc6c648d1243dac0e66d77c5790dc8a94dca7cec..4b8d042faa28676846e0e2843c568ff2969f90b0 100644
--- a/core/modules/system/src/Tests/Form/FormTest.php
+++ b/core/modules/system/src/Tests/Form/FormTest.php
@@ -48,7 +48,7 @@ protected function setUp() {
    *
    * If the form field is found in $form_state->getErrors() then the test pass.
    */
-  function testRequiredFields() {
+  public function testRequiredFields() {
     // Originates from https://www.drupal.org/node/117748.
     // Sets of empty strings and arrays.
     $empty_strings = ['""' => "", '"\n"' => "\n", '" "' => " ", '"\t"' => "\t", '" \n\t "' => " \n\t ", '"\n\n\n\n\n"' => "\n\n\n\n\n"];
@@ -163,7 +163,7 @@ function testRequiredFields() {
    *
    * @see \Drupal\form_test\Form\FormTestValidateRequiredForm
    */
-  function testRequiredCheckboxesRadio() {
+  public function testRequiredCheckboxesRadio() {
     $form = \Drupal::formBuilder()->getForm('\Drupal\form_test\Form\FormTestValidateRequiredForm');
 
     // Attempt to submit the form with no required fields set.
@@ -312,7 +312,7 @@ public function testGetFormsCsrfToken() {
    *
    * @see \Drupal\form_test\Form\FormTestValidateRequiredNoTitleForm
    */
-  function testRequiredTextfieldNoTitle() {
+  public function testRequiredTextfieldNoTitle() {
     // Attempt to submit the form with no required field set.
     $edit = [];
     $this->drupalPostForm('form-test/validate-required-no-title', $edit, 'Submit');
@@ -339,7 +339,7 @@ function testRequiredTextfieldNoTitle() {
    *
    * @see _form_test_checkbox()
    */
-  function testCheckboxProcessing() {
+  public function testCheckboxProcessing() {
     // First, try to submit without the required checkbox.
     $edit = [];
     $this->drupalPostForm('form-test/checkbox', $edit, t('Submit'));
@@ -367,7 +367,7 @@ function testCheckboxProcessing() {
   /**
    * Tests validation of #type 'select' elements.
    */
-  function testSelect() {
+  public function testSelect() {
     $form = \Drupal::formBuilder()->getForm('Drupal\form_test\Form\FormTestSelectForm');
     $this->drupalGet('form-test/select');
 
@@ -444,7 +444,7 @@ function testSelect() {
   /**
    * Tests a select element when #options is not set.
    */
-  function testEmptySelect() {
+  public function testEmptySelect() {
     $this->drupalGet('form-test/empty-select');
     $this->assertFieldByXPath("//select[1]", NULL, 'Select element found.');
     $this->assertNoFieldByXPath("//select[1]/option", NULL, 'No option element found.');
@@ -453,7 +453,7 @@ function testEmptySelect() {
   /**
    * Tests validation of #type 'number' and 'range' elements.
    */
-  function testNumber() {
+  public function testNumber() {
     $form = \Drupal::formBuilder()->getForm('\Drupal\form_test\Form\FormTestNumberForm');
 
     // Array with all the error messages to be checked.
@@ -517,7 +517,7 @@ function testNumber() {
   /**
    * Tests default value handling of #type 'range' elements.
    */
-  function testRange() {
+  public function testRange() {
     $values = json_decode($this->drupalPostForm('form-test/range', [], 'Submit'));
     $this->assertEqual($values->with_default_value, 18);
     $this->assertEqual($values->float, 10.5);
@@ -531,7 +531,7 @@ function testRange() {
   /**
    * Tests validation of #type 'color' elements.
    */
-  function testColorValidation() {
+  public function testColorValidation() {
     // Keys are inputs, values are expected results.
     $values = [
       '' => '#000000',
@@ -568,7 +568,7 @@ function testColorValidation() {
    *
    * @see _form_test_disabled_elements()
    */
-  function testDisabledElements() {
+  public function testDisabledElements() {
     // Get the raw form in its original state.
     $form_state = new FormState();
     $form = (new FormTestDisabledElementsForm())->buildForm([], $form_state);
@@ -626,7 +626,7 @@ function testDisabledElements() {
   /**
    * Assert that the values submitted to a form matches the default values of the elements.
    */
-  function assertFormValuesDefault($values, $form) {
+  public function assertFormValuesDefault($values, $form) {
     foreach (Element::children($form) as $key) {
       if (isset($form[$key]['#default_value'])) {
         if (isset($form[$key]['#expected_value'])) {
@@ -653,7 +653,7 @@ function assertFormValuesDefault($values, $form) {
    *
    * @see _form_test_disabled_elements()
    */
-  function testDisabledMarkup() {
+  public function testDisabledMarkup() {
     $this->drupalGet('form-test/disabled-elements');
     $form = \Drupal::formBuilder()->getForm('\Drupal\form_test\Form\FormTestDisabledElementsForm');
     $type_map = [
@@ -715,7 +715,7 @@ function testDisabledMarkup() {
    *
    * @see _form_test_input_forgery()
    */
-  function testInputForgery() {
+  public function testInputForgery() {
     $this->drupalGet('form-test/input-forgery');
     $checkbox = $this->xpath('//input[@name="checkboxes[two]"]');
     $checkbox[0]['value'] = 'FORGERY';
@@ -726,7 +726,7 @@ function testInputForgery() {
   /**
    * Tests required attribute.
    */
-  function testRequiredAttribute() {
+  public function testRequiredAttribute() {
     $this->drupalGet('form-test/required-attribute');
     $expected = 'required';
     // Test to make sure the elements have the proper required attribute.
diff --git a/core/modules/system/src/Tests/Form/LanguageSelectElementTest.php b/core/modules/system/src/Tests/Form/LanguageSelectElementTest.php
index d52eab49b13e8a45ec713667653da408ca6b0ffe..d443d4b647620e51f911cf5a78fecbf811705e61 100644
--- a/core/modules/system/src/Tests/Form/LanguageSelectElementTest.php
+++ b/core/modules/system/src/Tests/Form/LanguageSelectElementTest.php
@@ -25,7 +25,7 @@ class LanguageSelectElementTest extends WebTestBase {
   /**
    * Tests that the options printed by the language select element are correct.
    */
-  function testLanguageSelectElementOptions() {
+  public function testLanguageSelectElementOptions() {
     // Add some languages.
     ConfigurableLanguage::create([
       'id' => 'aaa',
@@ -68,7 +68,7 @@ function testLanguageSelectElementOptions() {
    *
    * This happens when the language module is disabled.
    */
-  function testHiddenLanguageSelectElement() {
+  public function testHiddenLanguageSelectElement() {
     // Disable the language module, so that the language select field will not
     // be rendered.
     $this->container->get('module_installer')->uninstall(['language']);
diff --git a/core/modules/system/src/Tests/Form/ProgrammaticTest.php b/core/modules/system/src/Tests/Form/ProgrammaticTest.php
index 5f6eac07ac41d35551e0d22a1992c343fcf10d2c..d365fb6bf56bac3d5eeac9b18d8b9acd253593d6 100644
--- a/core/modules/system/src/Tests/Form/ProgrammaticTest.php
+++ b/core/modules/system/src/Tests/Form/ProgrammaticTest.php
@@ -22,7 +22,7 @@ class ProgrammaticTest extends WebTestBase {
   /**
    * Test the programmatic form submission workflow.
    */
-  function testSubmissionWorkflow() {
+  public function testSubmissionWorkflow() {
     // Backup the current batch status and reset it to avoid conflicts while
     // processing the dummy form submit handler.
     $current_batch = $batch =& batch_get();
diff --git a/core/modules/system/src/Tests/Form/RebuildTest.php b/core/modules/system/src/Tests/Form/RebuildTest.php
index e759ff6c540f205cf21a44dabdac594567659e08..2e138bdfb322ce200baf9a1a431321569fc04eeb 100644
--- a/core/modules/system/src/Tests/Form/RebuildTest.php
+++ b/core/modules/system/src/Tests/Form/RebuildTest.php
@@ -42,7 +42,7 @@ protected function setUp() {
   /**
    * Tests preservation of values.
    */
-  function testRebuildPreservesValues() {
+  public function testRebuildPreservesValues() {
     $edit = [
       'checkbox_1_default_off' => TRUE,
       'checkbox_1_default_on' => FALSE,
@@ -67,7 +67,7 @@ function testRebuildPreservesValues() {
    * The 'action' attribute of a form should not change after an Ajax submission
    * followed by a non-Ajax submission, which triggers a validation error.
    */
-  function testPreserveFormActionAfterAJAX() {
+  public function testPreserveFormActionAfterAJAX() {
     // Create a multi-valued field for 'page' nodes to use for Ajax testing.
     $field_name = 'field_ajax_test';
     FieldStorageConfig::create([
diff --git a/core/modules/system/src/Tests/Form/StateValuesCleanAdvancedTest.php b/core/modules/system/src/Tests/Form/StateValuesCleanAdvancedTest.php
index 39fed3bea3ad948be11a2ec0e42604ae65ff614b..976209e7b2e11d6a231e546e7887fa5b4b8e8c40 100644
--- a/core/modules/system/src/Tests/Form/StateValuesCleanAdvancedTest.php
+++ b/core/modules/system/src/Tests/Form/StateValuesCleanAdvancedTest.php
@@ -28,7 +28,7 @@ class StateValuesCleanAdvancedTest extends WebTestBase {
   /**
    * Tests \Drupal\Core\Form\FormState::cleanValues().
    */
-  function testFormStateValuesCleanAdvanced() {
+  public function testFormStateValuesCleanAdvanced() {
 
     // Get an image for uploading.
     $image_files = $this->drupalGetTestFiles('image');
diff --git a/core/modules/system/src/Tests/Form/StateValuesCleanTest.php b/core/modules/system/src/Tests/Form/StateValuesCleanTest.php
index 4e1da6143253103a9f39a8a08c48dae8944778ff..8e79ac29d405545a480a151e861bc0e4f2304915 100644
--- a/core/modules/system/src/Tests/Form/StateValuesCleanTest.php
+++ b/core/modules/system/src/Tests/Form/StateValuesCleanTest.php
@@ -24,7 +24,7 @@ class StateValuesCleanTest extends WebTestBase {
   /**
    * Tests \Drupal\Core\Form\FormState::cleanValues().
    */
-  function testFormStateValuesClean() {
+  public function testFormStateValuesClean() {
     $values = Json::decode($this->drupalPostForm('form_test/form-state-values-clean', [], t('Submit')));
 
     // Setup the expected result.
diff --git a/core/modules/system/src/Tests/Form/StorageTest.php b/core/modules/system/src/Tests/Form/StorageTest.php
index 4d6f3a73d595cc6c6a3182a55d6cceedc6b3aaea..7896b5362c7b024dcff898f4a0e58bc381439886 100644
--- a/core/modules/system/src/Tests/Form/StorageTest.php
+++ b/core/modules/system/src/Tests/Form/StorageTest.php
@@ -34,7 +34,7 @@ protected function setUp() {
   /**
    * Tests using the form in a usual way.
    */
-  function testForm() {
+  public function testForm() {
     $this->drupalGet('form_test/form-storage');
     $this->assertText('Form constructions: 1');
 
@@ -60,7 +60,7 @@ function testForm() {
   /**
    * Tests using the form after calling $form_state->setCached().
    */
-  function testFormCached() {
+  public function testFormCached() {
     $this->drupalGet('form_test/form-storage', ['query' => ['cache' => 1]]);
     $this->assertText('Form constructions: 1');
 
@@ -87,7 +87,7 @@ function testFormCached() {
   /**
    * Tests validation when form storage is used.
    */
-  function testValidation() {
+  public function testValidation() {
     $this->drupalPostForm('form_test/form-storage', ['title' => '', 'value' => 'value_is_set'], 'Continue submit');
     $this->assertPattern('/value_is_set/', 'The input values have been kept.');
   }
@@ -102,7 +102,7 @@ function testValidation() {
    * during form validation, while another, required element in the form
    * triggers a form validation error.
    */
-  function testCachedFormStorageValidation() {
+  public function testCachedFormStorageValidation() {
     // Request the form with 'cache' query parameter to enable form caching.
     $this->drupalGet('form_test/form-storage', ['query' => ['cache' => 1]]);
 
diff --git a/core/modules/system/src/Tests/Form/SystemConfigFormTest.php b/core/modules/system/src/Tests/Form/SystemConfigFormTest.php
index 88687d90db3fa71cbc69a3e48991a66968f9984b..19be45f3f31a7913767bc3744523ee64eb83a638 100644
--- a/core/modules/system/src/Tests/Form/SystemConfigFormTest.php
+++ b/core/modules/system/src/Tests/Form/SystemConfigFormTest.php
@@ -21,7 +21,7 @@ class SystemConfigFormTest extends WebTestBase {
   /**
    * Tests the SystemConfigFormTestBase class.
    */
-  function testSystemConfigForm() {
+  public function testSystemConfigForm() {
     $this->drupalGet('form-test/system-config-form');
     $element = $this->xpath('//div[@id = :id]/input[contains(@class, :class)]', [':id' => 'edit-actions', ':class' => 'button--primary']);
     $this->assertTrue($element, 'The primary action submit button was found.');
diff --git a/core/modules/system/src/Tests/Form/TriggeringElementTest.php b/core/modules/system/src/Tests/Form/TriggeringElementTest.php
index 6bd8d2e8b59c316f5f9fdb2da62e608c102946f1..973d37db9fdcbbb62fc5240e59b15c047bb546f9 100644
--- a/core/modules/system/src/Tests/Form/TriggeringElementTest.php
+++ b/core/modules/system/src/Tests/Form/TriggeringElementTest.php
@@ -23,7 +23,7 @@ class TriggeringElementTest extends WebTestBase {
    * information is included in the POST data, as is sometimes the case when
    * the ENTER key is pressed in a textfield in Internet Explorer.
    */
-  function testNoButtonInfoInPost() {
+  public function testNoButtonInfoInPost() {
     $path = 'form-test/clicked-button';
     $edit = [];
     $form_html_id = 'form-test-clicked-button';
@@ -70,7 +70,7 @@ function testNoButtonInfoInPost() {
    * Test that the triggering element does not get set to a button with
    * #access=FALSE.
    */
-  function testAttemptAccessControlBypass() {
+  public function testAttemptAccessControlBypass() {
     $path = 'form-test/clicked-button';
     $form_html_id = 'form-test-clicked-button';
 
diff --git a/core/modules/system/src/Tests/Form/UrlTest.php b/core/modules/system/src/Tests/Form/UrlTest.php
index 69452cb397dfb103ab20d03b9799a576fe7b6162..aceb6b42027170029bbff672e1945127a680cf86 100644
--- a/core/modules/system/src/Tests/Form/UrlTest.php
+++ b/core/modules/system/src/Tests/Form/UrlTest.php
@@ -24,7 +24,7 @@ class UrlTest extends WebTestBase {
   /**
    * Tests that #type 'url' fields are properly validated and trimmed.
    */
-  function testFormUrl() {
+  public function testFormUrl() {
     $edit = [];
     $edit['url'] = 'http://';
     $edit['url_required'] = ' ';
diff --git a/core/modules/system/src/Tests/Form/ValidationTest.php b/core/modules/system/src/Tests/Form/ValidationTest.php
index 46781edd1186f45fe76318b9ba4c8be6615bebdc..7854fc24adb8643962f05e8fc449bd21e22d80df 100644
--- a/core/modules/system/src/Tests/Form/ValidationTest.php
+++ b/core/modules/system/src/Tests/Form/ValidationTest.php
@@ -22,7 +22,7 @@ class ValidationTest extends WebTestBase {
   /**
    * Tests #element_validate and #validate.
    */
-  function testValidate() {
+  public function testValidate() {
     $this->drupalGet('form-test/validate');
     // Verify that #element_validate handlers can alter the form and submitted
     // form values.
@@ -72,7 +72,7 @@ function testValidate() {
   /**
    * Tests that a form with a disabled CSRF token can be validated.
    */
-  function testDisabledToken() {
+  public function testDisabledToken() {
     $this->drupalPostForm('form-test/validate-no-token', [], 'Save');
     $this->assertText('The form_test_validate_no_token form has been submitted successfully.');
   }
@@ -80,7 +80,7 @@ function testDisabledToken() {
   /**
    * Tests partial form validation through #limit_validation_errors.
    */
-  function testValidateLimitErrors() {
+  public function testValidateLimitErrors() {
     $edit = [
       'test' => 'invalid',
       'test_numeric_index[0]' => 'invalid',
@@ -141,7 +141,7 @@ function testValidateLimitErrors() {
   /**
    * Tests #pattern validation.
    */
-  function testPatternValidation() {
+  public function testPatternValidation() {
     $textfield_error = t('%name field is not in the right format.', ['%name' => 'One digit followed by lowercase letters']);
     $tel_error = t('%name field is not in the right format.', ['%name' => 'Everything except numbers']);
     $password_error = t('%name field is not in the right format.', ['%name' => 'Password']);
@@ -202,7 +202,7 @@ function testPatternValidation() {
    *
    * @see \Drupal\form_test\Form\FormTestValidateRequiredForm
    */
-  function testCustomRequiredError() {
+  public function testCustomRequiredError() {
     $form = \Drupal::formBuilder()->getForm('\Drupal\form_test\Form\FormTestValidateRequiredForm');
 
     // Verify that a custom #required error can be set.
diff --git a/core/modules/system/src/Tests/Image/ToolkitSetupFormTest.php b/core/modules/system/src/Tests/Image/ToolkitSetupFormTest.php
index 64b306d562233078e822263d2283a2390262e86e..7dc9d33874a1cc70b9a446bd14b681254e3e9357 100644
--- a/core/modules/system/src/Tests/Image/ToolkitSetupFormTest.php
+++ b/core/modules/system/src/Tests/Image/ToolkitSetupFormTest.php
@@ -39,7 +39,7 @@ protected function setUp() {
   /**
    * Test Image toolkit setup form.
    */
-  function testToolkitSetupForm() {
+  public function testToolkitSetupForm() {
     // Get form.
     $this->drupalGet('admin/config/media/image-toolkit');
 
diff --git a/core/modules/system/src/Tests/Image/ToolkitTest.php b/core/modules/system/src/Tests/Image/ToolkitTest.php
index be8e3e3add4f4dd3e9b919864e31f35991e41001..f70c261efb2909a53bb82cd85a4c2e224669a593 100644
--- a/core/modules/system/src/Tests/Image/ToolkitTest.php
+++ b/core/modules/system/src/Tests/Image/ToolkitTest.php
@@ -12,7 +12,7 @@ class ToolkitTest extends ToolkitTestBase {
    * Check that ImageToolkitManager::getAvailableToolkits() only returns
    * available toolkits.
    */
-  function testGetAvailableToolkits() {
+  public function testGetAvailableToolkits() {
     $manager = $this->container->get('image.toolkit.manager');
     $toolkits = $manager->getAvailableToolkits();
     $this->assertTrue(isset($toolkits['test']), 'The working toolkit was returned.');
@@ -24,7 +24,7 @@ function testGetAvailableToolkits() {
   /**
    * Tests Image's methods.
    */
-  function testLoad() {
+  public function testLoad() {
     $image = $this->getImage();
     $this->assertTrue(is_object($image), 'Returned an object.');
     $this->assertEqual($image->getToolkitId(), 'test', 'Image had toolkit set.');
@@ -34,7 +34,7 @@ function testLoad() {
   /**
    * Test the image_save() function.
    */
-  function testSave() {
+  public function testSave() {
     $this->assertFalse($this->image->save(), 'Function returned the expected value.');
     $this->assertToolkitOperationsCalled(['save']);
   }
@@ -42,7 +42,7 @@ function testSave() {
   /**
    * Test the image_apply() function.
    */
-  function testApply() {
+  public function testApply() {
     $data = ['p1' => 1, 'p2' => TRUE, 'p3' => 'text'];
     $this->assertTrue($this->image->apply('my_operation', $data), 'Function returned the expected value.');
 
@@ -58,7 +58,7 @@ function testApply() {
   /**
    * Test the image_apply() function.
    */
-  function testApplyNoParameters() {
+  public function testApplyNoParameters() {
     $this->assertTrue($this->image->apply('my_operation'), 'Function returned the expected value.');
 
     // Check that apply was called and with the correct parameters.
diff --git a/core/modules/system/src/Tests/Image/ToolkitTestBase.php b/core/modules/system/src/Tests/Image/ToolkitTestBase.php
index af0b253592f13563b16365c916549260757f6d58..0051e94117397d12ad58842680d718b77700092f 100644
--- a/core/modules/system/src/Tests/Image/ToolkitTestBase.php
+++ b/core/modules/system/src/Tests/Image/ToolkitTestBase.php
@@ -75,7 +75,7 @@ protected function getImage() {
    *   Array with string containing with the operation name, e.g. 'load',
    *   'save', 'crop', etc.
    */
-  function assertToolkitOperationsCalled(array $expected) {
+  public function assertToolkitOperationsCalled(array $expected) {
     // If one of the image operations is expected, apply should be expected as
     // well.
     $operations = [
@@ -120,7 +120,7 @@ function assertToolkitOperationsCalled(array $expected) {
   /**
    * Resets/initializes the history of calls to the test toolkit functions.
    */
-  function imageTestReset() {
+  public function imageTestReset() {
     // Keep track of calls to these operations
     $results = [
       'parseFile' => [],
@@ -147,7 +147,7 @@ function imageTestReset() {
    *   'resize', 'rotate', 'crop', 'desaturate') with values being arrays of
    *   parameters passed to each call.
    */
-  function imageTestGetAllCalls() {
+  public function imageTestGetAllCalls() {
     return \Drupal::state()->get('image_test.results') ?: [];
   }
 
diff --git a/core/modules/system/src/Tests/Installer/SiteNameTest.php b/core/modules/system/src/Tests/Installer/SiteNameTest.php
index ec4c0e1368693207334e532d8241004ad0bc2c52..081dfb16ac28f161103c6f18116481ead516f356 100644
--- a/core/modules/system/src/Tests/Installer/SiteNameTest.php
+++ b/core/modules/system/src/Tests/Installer/SiteNameTest.php
@@ -31,7 +31,7 @@ protected function installParameters() {
   /**
    * Tests that the desired site name appears on the page after installation.
    */
-  function testSiteName() {
+  public function testSiteName() {
     $this->drupalGet('');
     $this->assertRaw($this->siteName, 'The site name that was set during the installation appears on the front page after installation.');
   }
diff --git a/core/modules/system/src/Tests/Menu/BreadcrumbTest.php b/core/modules/system/src/Tests/Menu/BreadcrumbTest.php
index f158f272bf4d52b7f1c35cd72b409760c0bfc113..64c8c159774a1a3b969ad23938943c67e3ab3282 100644
--- a/core/modules/system/src/Tests/Menu/BreadcrumbTest.php
+++ b/core/modules/system/src/Tests/Menu/BreadcrumbTest.php
@@ -58,7 +58,7 @@ protected function setUp() {
   /**
    * Tests breadcrumbs on node and administrative paths.
    */
-  function testBreadCrumbs() {
+  public function testBreadCrumbs() {
     // Prepare common base breadcrumb elements.
     $home = ['' => 'Home'];
     $admin = $home + ['admin' => t('Administration')];
diff --git a/core/modules/system/src/Tests/Module/DependencyTest.php b/core/modules/system/src/Tests/Module/DependencyTest.php
index 1e297de0aac32cad5928ce97ae81be984862cd9d..dc00c27ae80740b23340e94d36136b7f4ebaee8f 100644
--- a/core/modules/system/src/Tests/Module/DependencyTest.php
+++ b/core/modules/system/src/Tests/Module/DependencyTest.php
@@ -12,7 +12,7 @@ class DependencyTest extends ModuleTestBase {
   /**
    * Checks functionality of project namespaces for dependencies.
    */
-  function testProjectNamespaceForDependencies() {
+  public function testProjectNamespaceForDependencies() {
     $edit = [
       'modules[filter][enable]' => TRUE,
     ];
@@ -28,7 +28,7 @@ function testProjectNamespaceForDependencies() {
   /**
    * Attempts to enable the Content Translation module without Language enabled.
    */
-  function testEnableWithoutDependency() {
+  public function testEnableWithoutDependency() {
     // Attempt to enable Content Translation without Language enabled.
     $edit = [];
     $edit['modules[content_translation][enable]'] = 'content_translation';
@@ -52,7 +52,7 @@ function testEnableWithoutDependency() {
   /**
    * Attempts to enable a module with a missing dependency.
    */
-  function testMissingModules() {
+  public function testMissingModules() {
     // Test that the system_dependencies_test module is marked
     // as missing a dependency.
     $this->drupalGet('admin/modules');
@@ -64,7 +64,7 @@ function testMissingModules() {
   /**
    * Tests enabling a module that depends on an incompatible version of a module.
    */
-  function testIncompatibleModuleVersionDependency() {
+  public function testIncompatibleModuleVersionDependency() {
     // Test that the system_incompatible_module_version_dependencies_test is
     // marked as having an incompatible dependency.
     $this->drupalGet('admin/modules');
@@ -79,7 +79,7 @@ function testIncompatibleModuleVersionDependency() {
   /**
    * Tests enabling a module that depends on a module with an incompatible core version.
    */
-  function testIncompatibleCoreVersionDependency() {
+  public function testIncompatibleCoreVersionDependency() {
     // Test that the system_incompatible_core_version_dependencies_test is
     // marked as having an incompatible dependency.
     $this->drupalGet('admin/modules');
@@ -93,7 +93,7 @@ function testIncompatibleCoreVersionDependency() {
   /**
    * Tests enabling a module that depends on a module which fails hook_requirements().
    */
-  function testEnableRequirementsFailureDependency() {
+  public function testEnableRequirementsFailureDependency() {
     \Drupal::service('module_installer')->install(['comment']);
 
     $this->assertModules(['requirements1_test'], FALSE);
@@ -120,7 +120,7 @@ function testEnableRequirementsFailureDependency() {
    *
    * Dependencies should be enabled before their dependents.
    */
-  function testModuleEnableOrder() {
+  public function testModuleEnableOrder() {
     \Drupal::service('module_installer')->install(['module_test'], FALSE);
     $this->resetAll();
     $this->assertModules(['module_test'], TRUE);
@@ -153,7 +153,7 @@ function testModuleEnableOrder() {
   /**
    * Tests attempting to uninstall a module that has installed dependents.
    */
-  function testUninstallDependents() {
+  public function testUninstallDependents() {
     // Enable the forum module.
     $edit = ['modules[forum][enable]' => 'forum'];
     $this->drupalPostForm('admin/modules', $edit, t('Install'));
diff --git a/core/modules/system/src/Tests/Module/HookRequirementsTest.php b/core/modules/system/src/Tests/Module/HookRequirementsTest.php
index 75813c6118fa912bf7950541b57e5cb1c65f26e2..c89c206ca3ea89b3ebfccac097f089fdb8639731 100644
--- a/core/modules/system/src/Tests/Module/HookRequirementsTest.php
+++ b/core/modules/system/src/Tests/Module/HookRequirementsTest.php
@@ -11,7 +11,7 @@ class HookRequirementsTest extends ModuleTestBase {
   /**
    * Assert that a module cannot be installed if it fails hook_requirements().
    */
-  function testHookRequirementsFailure() {
+  public function testHookRequirementsFailure() {
     $this->assertModules(['requirements1_test'], FALSE);
 
     // Attempt to install the requirements1_test module.
diff --git a/core/modules/system/src/Tests/Module/ModuleTestBase.php b/core/modules/system/src/Tests/Module/ModuleTestBase.php
index 8d669caa7d2dfaa01c1a115199e4134e26e144c8..a0a4ed226a925bd8351af0ac46f5e8fd3c9637d1 100644
--- a/core/modules/system/src/Tests/Module/ModuleTestBase.php
+++ b/core/modules/system/src/Tests/Module/ModuleTestBase.php
@@ -41,7 +41,7 @@ protected function setUp() {
    *   (optional) Whether or not to assert that there are tables that match the
    *   specified base table. Defaults to TRUE.
    */
-  function assertTableCount($base_table, $count = TRUE) {
+  public function assertTableCount($base_table, $count = TRUE) {
     $tables = db_find_tables(Database::getConnection()->prefixTables('{' . $base_table . '}') . '%');
 
     if ($count) {
@@ -56,7 +56,7 @@ function assertTableCount($base_table, $count = TRUE) {
    * @param $module
    *   The name of the module.
    */
-  function assertModuleTablesExist($module) {
+  public function assertModuleTablesExist($module) {
     $tables = array_keys(drupal_get_module_schema($module));
     $tables_exist = TRUE;
     foreach ($tables as $table) {
@@ -73,7 +73,7 @@ function assertModuleTablesExist($module) {
    * @param $module
    *   The name of the module.
    */
-  function assertModuleTablesDoNotExist($module) {
+  public function assertModuleTablesDoNotExist($module) {
     $tables = array_keys(drupal_get_module_schema($module));
     $tables_exist = FALSE;
     foreach ($tables as $table) {
@@ -93,7 +93,7 @@ function assertModuleTablesDoNotExist($module) {
    * @return bool
    *   TRUE if configuration has been installed, FALSE otherwise.
    */
-  function assertModuleConfig($module) {
+  public function assertModuleConfig($module) {
     $module_config_dir = drupal_get_path('module', $module) . '/' . InstallStorage::CONFIG_INSTALL_DIRECTORY;
     if (!is_dir($module_config_dir)) {
       return;
@@ -135,7 +135,7 @@ function assertModuleConfig($module) {
    * @return bool
    *   TRUE if no configuration was found, FALSE otherwise.
    */
-  function assertNoModuleConfig($module) {
+  public function assertNoModuleConfig($module) {
     $names = \Drupal::configFactory()->listAll($module . '.');
     return $this->assertFalse($names, format_string('No configuration found for @module module.', ['@module' => $module]));
   }
@@ -148,7 +148,7 @@ function assertNoModuleConfig($module) {
    * @param $enabled
    *   Expected module state.
    */
-  function assertModules(array $modules, $enabled) {
+  public function assertModules(array $modules, $enabled) {
     $this->rebuildContainer();
     foreach ($modules as $module) {
       if ($enabled) {
@@ -181,7 +181,7 @@ function assertModules(array $modules, $enabled) {
    * @param $link
    *   A link to associate with the message.
    */
-  function assertLogMessage($type, $message, $variables = [], $severity = RfcLogLevel::NOTICE, $link = '') {
+  public function assertLogMessage($type, $message, $variables = [], $severity = RfcLogLevel::NOTICE, $link = '') {
     $count = db_select('watchdog', 'w')
       ->condition('type', $type)
       ->condition('message', $message)
diff --git a/core/modules/system/src/Tests/Module/RequiredTest.php b/core/modules/system/src/Tests/Module/RequiredTest.php
index b5f17305e5f2da03cd7422edff8a2b7712dc5a75..a2f3560abde938ba8bdf5c7f6839d19c6dc55dc7 100644
--- a/core/modules/system/src/Tests/Module/RequiredTest.php
+++ b/core/modules/system/src/Tests/Module/RequiredTest.php
@@ -11,7 +11,7 @@ class RequiredTest extends ModuleTestBase {
   /**
    * Assert that core required modules cannot be disabled.
    */
-  function testDisableRequired() {
+  public function testDisableRequired() {
     $module_info = system_get_info('module');
     $this->drupalGet('admin/modules');
     foreach ($module_info as $module => $info) {
diff --git a/core/modules/system/src/Tests/Module/VersionTest.php b/core/modules/system/src/Tests/Module/VersionTest.php
index 1e33f11d43e633e3b7118ab00a2ad7931e5cea9b..daad1a6679f4e47379e186e670ac99951944274f 100644
--- a/core/modules/system/src/Tests/Module/VersionTest.php
+++ b/core/modules/system/src/Tests/Module/VersionTest.php
@@ -12,7 +12,7 @@ class VersionTest extends ModuleTestBase {
   /**
    * Test version dependencies.
    */
-  function testModuleVersions() {
+  public function testModuleVersions() {
     $dependencies = [
       // Alternating between being compatible and incompatible with 8.x-2.4-beta3.
       // The first is always a compatible.
diff --git a/core/modules/system/src/Tests/Pager/PagerTest.php b/core/modules/system/src/Tests/Pager/PagerTest.php
index ba484994427fd97aa6110304724f9e10a7215ebe..71413f283e536951e194031099b10886a9b43dfc 100644
--- a/core/modules/system/src/Tests/Pager/PagerTest.php
+++ b/core/modules/system/src/Tests/Pager/PagerTest.php
@@ -45,7 +45,7 @@ protected function setUp() {
   /**
    * Tests markup and CSS classes of pager links.
    */
-  function testActiveClass() {
+  public function testActiveClass() {
     // Verify first page.
     $this->drupalGet('admin/reports/dblog');
     $current_page = 0;
diff --git a/core/modules/system/src/Tests/Session/SessionTest.php b/core/modules/system/src/Tests/Session/SessionTest.php
index 9b2dc88aa7d56430c177e0ed3021c4d95f85aac4..fcadd42b91ea2cb6cc595997698d09183b730715 100644
--- a/core/modules/system/src/Tests/Session/SessionTest.php
+++ b/core/modules/system/src/Tests/Session/SessionTest.php
@@ -24,7 +24,7 @@ class SessionTest extends WebTestBase {
    * Tests for \Drupal\Core\Session\WriteSafeSessionHandler::setSessionWritable()
    * ::isSessionWritable and \Drupal\Core\Session\SessionManager::regenerate().
    */
-  function testSessionSaveRegenerate() {
+  public function testSessionSaveRegenerate() {
     $session_handler = $this->container->get('session_handler.write_safe');
     $this->assertTrue($session_handler->isSessionWritable(), 'session_handler->isSessionWritable() initially returns TRUE.');
     $session_handler->setSessionWritable(FALSE);
@@ -74,7 +74,7 @@ function testSessionSaveRegenerate() {
   /**
    * Test data persistence via the session_test module callbacks.
    */
-  function testDataPersistence() {
+  public function testDataPersistence() {
     $user = $this->drupalCreateUser([]);
     // Enable sessions.
     $this->sessionReset($user->id());
@@ -147,7 +147,7 @@ public function testSessionPersistenceOnLogin() {
   /**
    * Test that empty anonymous sessions are destroyed.
    */
-  function testEmptyAnonymousSession() {
+  public function testEmptyAnonymousSession() {
     // Disable the dynamic_page_cache module; it'd cause session_test's debug
     // output (that is added in
     // SessionTestSubscriber::onKernelResponseSessionTest()) to not be added.
@@ -210,7 +210,7 @@ function testEmptyAnonymousSession() {
   /**
    * Test that sessions are only saved when necessary.
    */
-  function testSessionWrite() {
+  public function testSessionWrite() {
     $user = $this->drupalCreateUser([]);
     $this->drupalLogin($user);
 
@@ -258,7 +258,7 @@ function testSessionWrite() {
   /**
    * Test that empty session IDs are not allowed.
    */
-  function testEmptySessionID() {
+  public function testEmptySessionID() {
     $user = $this->drupalCreateUser([]);
     $this->drupalLogin($user);
     $this->drupalGet('session-test/is-logged-in');
@@ -284,7 +284,7 @@ function testEmptySessionID() {
    *
    * @param $uid User id to set as the active session.
    */
-  function sessionReset($uid = 0) {
+  public function sessionReset($uid = 0) {
     // Close the internal browser.
     $this->curlClose();
     $this->loggedInUser = FALSE;
@@ -300,7 +300,7 @@ function sessionReset($uid = 0) {
   /**
    * Assert whether the SimpleTest browser sent a session cookie.
    */
-  function assertSessionCookie($sent) {
+  public function assertSessionCookie($sent) {
     if ($sent) {
       $this->assertNotNull($this->sessionId, 'Session cookie was sent.');
     }
@@ -312,7 +312,7 @@ function assertSessionCookie($sent) {
   /**
    * Assert whether $_SESSION is empty at the beginning of the request.
    */
-  function assertSessionEmpty($empty) {
+  public function assertSessionEmpty($empty) {
     if ($empty) {
       $this->assertIdentical($this->drupalGetHeader('X-Session-Empty'), '1', 'Session was empty.');
     }
diff --git a/core/modules/system/src/Tests/System/AccessDeniedTest.php b/core/modules/system/src/Tests/System/AccessDeniedTest.php
index f06cf1f0f8bb7cd1085bc2b454b5535e2414fa29..ba1d599671f84f6d855c49cdb4a0e437185c09e3 100644
--- a/core/modules/system/src/Tests/System/AccessDeniedTest.php
+++ b/core/modules/system/src/Tests/System/AccessDeniedTest.php
@@ -36,7 +36,7 @@ protected function setUp() {
     user_role_grant_permissions(RoleInterface::AUTHENTICATED_ID, ['access user profiles']);
   }
 
-  function testAccessDenied() {
+  public function testAccessDenied() {
     $this->drupalGet('admin');
     $this->assertText(t('Access denied'), 'Found the default 403 page');
     $this->assertResponse(403);
diff --git a/core/modules/system/src/Tests/System/AdminTest.php b/core/modules/system/src/Tests/System/AdminTest.php
index 222a4027797d4b874d0e58c2c420c4204fb9f2d8..7921e1c4cffd5b22a2b4ee73fd47d463d5453a71 100644
--- a/core/modules/system/src/Tests/System/AdminTest.php
+++ b/core/modules/system/src/Tests/System/AdminTest.php
@@ -51,7 +51,7 @@ protected function setUp() {
   /**
    * Tests output on administrative listing pages.
    */
-  function testAdminPages() {
+  public function testAdminPages() {
     // Go to Administration.
     $this->drupalGet('admin');
 
@@ -143,7 +143,7 @@ protected function getTopLevelMenuLinks() {
   /**
    * Test compact mode.
    */
-  function testCompactMode() {
+  public function testCompactMode() {
     // The front page defaults to 'user/login', which redirects to 'user/{user}'
     // for authenticated users. We cannot use '<front>', since this does not
     // match the redirected url.
diff --git a/core/modules/system/src/Tests/System/CronRunTest.php b/core/modules/system/src/Tests/System/CronRunTest.php
index d11a51616cf7224fd82ae862cf14c808bc533c2d..111cc00870b10ebd05b5e4c2b74716f04c8ad07e 100644
--- a/core/modules/system/src/Tests/System/CronRunTest.php
+++ b/core/modules/system/src/Tests/System/CronRunTest.php
@@ -21,7 +21,7 @@ class CronRunTest extends WebTestBase {
   /**
    * Test cron runs.
    */
-  function testCronRun() {
+  public function testCronRun() {
     // Run cron anonymously without any cron key.
     $this->drupalGet('cron');
     $this->assertResponse(404);
@@ -43,7 +43,7 @@ function testCronRun() {
    * In these tests we do not use REQUEST_TIME to track start time, because we
    * need the exact time when cron is triggered.
    */
-  function testAutomatedCron() {
+  public function testAutomatedCron() {
     // Test with a logged in user; anonymous users likely don't cause Drupal to
     // fully bootstrap, because of the internal page cache or an external
     // reverse proxy. Reuse this user for disabling cron later in the test.
@@ -83,7 +83,7 @@ function testAutomatedCron() {
   /**
    * Make sure exceptions thrown on hook_cron() don't affect other modules.
    */
-  function testCronExceptions() {
+  public function testCronExceptions() {
     \Drupal::state()->delete('common_test.cron');
     // The common_test module throws an exception. If it isn't caught, the tests
     // won't finish successfully.
@@ -96,7 +96,7 @@ function testCronExceptions() {
   /**
    * Make sure the cron UI reads from the state storage.
    */
-  function testCronUI() {
+  public function testCronUI() {
     $admin_user = $this->drupalCreateUser(['administer site configuration']);
     $this->drupalLogin($admin_user);
     $this->drupalGet('admin/config/system/cron');
diff --git a/core/modules/system/src/Tests/System/ErrorHandlerTest.php b/core/modules/system/src/Tests/System/ErrorHandlerTest.php
index e2a7eb5f99dad8b32417685af7e739e2e7e91ce2..dc661fec914fa73647b4a04f7b88dfff02fda007 100644
--- a/core/modules/system/src/Tests/System/ErrorHandlerTest.php
+++ b/core/modules/system/src/Tests/System/ErrorHandlerTest.php
@@ -22,7 +22,7 @@ class ErrorHandlerTest extends WebTestBase {
   /**
    * Test the error handler.
    */
-  function testErrorHandler() {
+  public function testErrorHandler() {
     $config = $this->config('system.logging');
     $error_notice = [
       '%type' => 'Notice',
@@ -121,7 +121,7 @@ function testErrorHandler() {
   /**
    * Test the exception handler.
    */
-  function testExceptionHandler() {
+  public function testExceptionHandler() {
     // Ensure the test error log is empty before these tests.
     $this->assertNoErrorsLogged();
 
@@ -183,7 +183,7 @@ function testExceptionHandler() {
   /**
    * Helper function: assert that the error message is found.
    */
-  function assertErrorMessage(array $error) {
+  public function assertErrorMessage(array $error) {
     $message = new FormattableMarkup('%type: @message in %function (line ', $error);
     $this->assertRaw($message, format_string('Found error message: @message.', ['@message' => $message]));
   }
@@ -191,7 +191,7 @@ function assertErrorMessage(array $error) {
   /**
    * Helper function: assert that the error message is not found.
    */
-  function assertNoErrorMessage(array $error) {
+  public function assertNoErrorMessage(array $error) {
     $message = new FormattableMarkup('%type: @message in %function (line ', $error);
     $this->assertNoRaw($message, format_string('Did not find error message: @message.', ['@message' => $message]));
   }
diff --git a/core/modules/system/src/Tests/System/PageNotFoundTest.php b/core/modules/system/src/Tests/System/PageNotFoundTest.php
index d4cd861b88a3eb0c40e6e98bf478d1eea735b2df..b1a88d827b015d35280ec4cdf298b08fbb107991 100644
--- a/core/modules/system/src/Tests/System/PageNotFoundTest.php
+++ b/core/modules/system/src/Tests/System/PageNotFoundTest.php
@@ -34,7 +34,7 @@ protected function setUp() {
     user_role_grant_permissions(RoleInterface::AUTHENTICATED_ID, ['access user profiles']);
   }
 
-  function testPageNotFound() {
+  public function testPageNotFound() {
     $this->drupalLogin($this->adminUser);
     $this->drupalGet($this->randomMachineName(10));
     $this->assertText(t('Page not found'), 'Found the default 404 page');
diff --git a/core/modules/system/src/Tests/System/PageTitleTest.php b/core/modules/system/src/Tests/System/PageTitleTest.php
index 213339809d122bfe014ab2144e03ff77ba842c5d..3b4d38a500f6fbf55516ffa4151ece98514fda9d 100644
--- a/core/modules/system/src/Tests/System/PageTitleTest.php
+++ b/core/modules/system/src/Tests/System/PageTitleTest.php
@@ -40,7 +40,7 @@ protected function setUp() {
   /**
    * Tests the handling of HTML in node titles.
    */
-  function testTitleTags() {
+  public function testTitleTags() {
     $title = "string with <em>HTML</em>";
     // Generate node content.
     $edit = [
@@ -60,7 +60,7 @@ function testTitleTags() {
   /**
    * Test if the title of the site is XSS proof.
    */
-  function testTitleXSS() {
+  public function testTitleXSS() {
     // Set some title with JavaScript and HTML chars to escape.
     $title = '</title><script type="text/javascript">alert("Title XSS!");</script> & < > " \' ';
     $title_filtered = Html::escape($title);
diff --git a/core/modules/system/src/Tests/System/ResponseGeneratorTest.php b/core/modules/system/src/Tests/System/ResponseGeneratorTest.php
index 6197d1d40ae429d9e5f61b59ce641c3a3650d8af..a535b66c42779624e163143433998931032a2108 100644
--- a/core/modules/system/src/Tests/System/ResponseGeneratorTest.php
+++ b/core/modules/system/src/Tests/System/ResponseGeneratorTest.php
@@ -33,7 +33,7 @@ protected function setUp() {
   /**
    * Test to see if generator header is added.
    */
-  function testGeneratorHeaderAdded() {
+  public function testGeneratorHeaderAdded() {
 
     $node = $this->drupalCreateNode();
 
diff --git a/core/modules/system/src/Tests/System/ShutdownFunctionsTest.php b/core/modules/system/src/Tests/System/ShutdownFunctionsTest.php
index 3a6b3dbf9a23034e5cdcf990cf4d53b5ea1eef95..50fae0362fc1a57e665e9fc7959ce5d516e9cf34 100644
--- a/core/modules/system/src/Tests/System/ShutdownFunctionsTest.php
+++ b/core/modules/system/src/Tests/System/ShutdownFunctionsTest.php
@@ -29,7 +29,7 @@ protected function tearDown() {
   /**
    * Test shutdown functions.
    */
-  function testShutdownFunctions() {
+  public function testShutdownFunctions() {
     $arg1 = $this->randomMachineName();
     $arg2 = $this->randomMachineName();
     $this->drupalGet('system-test/shutdown-functions/' . $arg1 . '/' . $arg2);
diff --git a/core/modules/system/src/Tests/System/ThemeTest.php b/core/modules/system/src/Tests/System/ThemeTest.php
index b75ede9a2117dcd0e9f88cf1a1a97ee5b0770854..29d88a3778d7e49fe694bf56858f5c61f7b1e5e1 100644
--- a/core/modules/system/src/Tests/System/ThemeTest.php
+++ b/core/modules/system/src/Tests/System/ThemeTest.php
@@ -41,7 +41,7 @@ protected function setUp() {
   /**
    * Test the theme settings form.
    */
-  function testThemeSettings() {
+  public function testThemeSettings() {
     // Ensure invalid theme settings form URLs return a proper 404.
     $this->drupalGet('admin/appearance/settings/bartik');
     $this->assertResponse(404, 'The theme settings form URL for a uninstalled theme could not be found.');
@@ -218,7 +218,7 @@ function testThemeSettings() {
   /**
    * Test the theme settings logo form.
    */
-  function testThemeSettingsLogo() {
+  public function testThemeSettingsLogo() {
     // Visit Bartik's theme settings page to replace the logo.
     $this->container->get('theme_handler')->install(['bartik']);
     $this->drupalGet('admin/appearance/settings/bartik');
@@ -241,7 +241,7 @@ function testThemeSettingsLogo() {
   /**
    * Test the administration theme functionality.
    */
-  function testAdministrationTheme() {
+  public function testAdministrationTheme() {
     $this->container->get('theme_handler')->install(['seven']);
 
     // Install an administration theme and show it on the node admin pages.
@@ -300,7 +300,7 @@ function testAdministrationTheme() {
   /**
    * Test switching the default theme.
    */
-  function testSwitchDefaultTheme() {
+  public function testSwitchDefaultTheme() {
     /** @var \Drupal\Core\Extension\ThemeHandlerInterface $theme_handler */
     $theme_handler = \Drupal::service('theme_handler');
     // First, install Stark and set it as the default theme programmatically.
@@ -330,7 +330,7 @@ function testSwitchDefaultTheme() {
    * Include test for themes that have a missing base theme somewhere further up
    * the chain than the immediate base theme.
    */
-  function testInvalidTheme() {
+  public function testInvalidTheme() {
     // theme_page_test_system_info_alter() un-hides all hidden themes.
     $this->container->get('module_installer')->install(['theme_page_test']);
     // Clear the system_list() and theme listing cache to pick up the change.
@@ -348,7 +348,7 @@ function testInvalidTheme() {
   /**
    * Test uninstalling of themes works.
    */
-  function testUninstallingThemes() {
+  public function testUninstallingThemes() {
     // Install Bartik and set it as the default theme.
     \Drupal::service('theme_handler')->install(['bartik']);
     // Set up seven as the admin theme.
@@ -408,7 +408,7 @@ function testUninstallingThemes() {
   /**
    * Tests installing a theme and setting it as default.
    */
-  function testInstallAndSetAsDefault() {
+  public function testInstallAndSetAsDefault() {
     $this->drupalGet('admin/appearance');
     // Bartik is uninstalled in the test profile and has the third "Install and
     // set as default" link.
diff --git a/core/modules/system/src/Tests/Theme/EngineTwigTest.php b/core/modules/system/src/Tests/Theme/EngineTwigTest.php
index 9327c9426c171061eef7f09c930975aa3aea7bf4..ffff75fc49b9ceefa4565fa39e34ae47e2a9f7a9 100644
--- a/core/modules/system/src/Tests/Theme/EngineTwigTest.php
+++ b/core/modules/system/src/Tests/Theme/EngineTwigTest.php
@@ -28,7 +28,7 @@ protected function setUp() {
   /**
    * Tests that the Twig engine handles PHP data correctly.
    */
-  function testTwigVariableDataTypes() {
+  public function testTwigVariableDataTypes() {
     $this->config('system.theme')
       ->set('default', 'test_theme')
       ->save();
diff --git a/core/modules/system/src/Tests/Theme/EntityFilteringThemeTest.php b/core/modules/system/src/Tests/Theme/EntityFilteringThemeTest.php
index f7ebd71e88d9a560a4e6a828ba594f704136c820..10eda61845852d9277796a6b2aae6b020d2a2452 100644
--- a/core/modules/system/src/Tests/Theme/EntityFilteringThemeTest.php
+++ b/core/modules/system/src/Tests/Theme/EntityFilteringThemeTest.php
@@ -122,7 +122,7 @@ protected function setUp() {
   /**
    * Checks each themed entity for XSS filtering in available themes.
    */
-  function testThemedEntity() {
+  public function testThemedEntity() {
     // Check paths where various view modes of the entities are rendered.
     $paths = [
       'user',
diff --git a/core/modules/system/src/Tests/Theme/FunctionsTest.php b/core/modules/system/src/Tests/Theme/FunctionsTest.php
index a8fec41f2149edc57ec6b8b1b7e45b0f69a5c3b2..825834859aa05163b17b14a7986d7482bc42e25b 100644
--- a/core/modules/system/src/Tests/Theme/FunctionsTest.php
+++ b/core/modules/system/src/Tests/Theme/FunctionsTest.php
@@ -26,7 +26,7 @@ class FunctionsTest extends WebTestBase {
   /**
    * Tests item-list.html.twig.
    */
-  function testItemList() {
+  public function testItemList() {
     // Verify that empty items produce no output.
     $variables = [];
     $expected = '';
@@ -166,7 +166,7 @@ function testItemList() {
   /**
    * Tests links.html.twig.
    */
-  function testLinks() {
+  public function testLinks() {
     // Turn off the query for the
     // \Drupal\Core\Utility\LinkGeneratorInterface::generate() method to compare
     // the active link correctly.
@@ -287,7 +287,7 @@ function testLinks() {
   /**
    * Tests links.html.twig using links with indexed keys.
    */
-  function testIndexedKeyedLinks() {
+  public function testIndexedKeyedLinks() {
     // Turn off the query for the
     // \Drupal\Core\Utility\LinkGeneratorInterface::generate() method to compare
     // the active link correctly.
@@ -408,7 +408,7 @@ function testIndexedKeyedLinks() {
   /**
    * Test the use of drupal_pre_render_links() on a nested array of links.
    */
-  function testDrupalPreRenderLinks() {
+  public function testDrupalPreRenderLinks() {
     // Define the base array to be rendered, containing a variety of different
     // kinds of links.
     $base_array = [
@@ -506,7 +506,7 @@ function testDrupalPreRenderLinks() {
   /**
    * Tests theme_image().
    */
-  function testImage() {
+  public function testImage() {
     // Test that data URIs work with theme_image().
     $variables = [];
     $variables['uri'] = 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHwAAAABJRU5ErkJggg==';
diff --git a/core/modules/system/src/Tests/Theme/HtmlAttributesTest.php b/core/modules/system/src/Tests/Theme/HtmlAttributesTest.php
index b9babae5645fc55e033db33a5ce92004a353ec51..b2018c777e8a495550c4abf9f61ad86a4cabed7e 100644
--- a/core/modules/system/src/Tests/Theme/HtmlAttributesTest.php
+++ b/core/modules/system/src/Tests/Theme/HtmlAttributesTest.php
@@ -21,7 +21,7 @@ class HtmlAttributesTest extends WebTestBase {
   /**
    * Tests that attributes in the 'html' and 'body' elements can be altered.
    */
-  function testThemeHtmlAttributes() {
+  public function testThemeHtmlAttributes() {
     $this->drupalGet('');
     $attributes = $this->xpath('/html[@theme_test_html_attribute="theme test html attribute value"]');
     $this->assertTrue(count($attributes) == 1, "Attribute set in the 'html' element via hook_preprocess_HOOK() found.");
diff --git a/core/modules/system/src/Tests/Theme/ThemeSuggestionsAlterTest.php b/core/modules/system/src/Tests/Theme/ThemeSuggestionsAlterTest.php
index 706fd267306c5b91764031448aa718f1fa234cb8..c01a94fec259e3732b0b535f0f94e7269842a1f5 100644
--- a/core/modules/system/src/Tests/Theme/ThemeSuggestionsAlterTest.php
+++ b/core/modules/system/src/Tests/Theme/ThemeSuggestionsAlterTest.php
@@ -27,7 +27,7 @@ protected function setUp() {
   /**
    * Tests that hooks to provide theme suggestions work.
    */
-  function testTemplateSuggestions() {
+  public function testTemplateSuggestions() {
     $this->drupalGet('theme-test/suggestion-provided');
     $this->assertText('Template for testing suggestions provided by the module declaring the theme hook.');
 
@@ -44,7 +44,7 @@ function testTemplateSuggestions() {
   /**
    * Tests hook_theme_suggestions_alter().
    */
-  function testGeneralSuggestionsAlter() {
+  public function testGeneralSuggestionsAlter() {
     $this->drupalGet('theme-test/general-suggestion-alter');
     $this->assertText('Original template for testing hook_theme_suggestions_alter().');
 
@@ -66,7 +66,7 @@ function testGeneralSuggestionsAlter() {
   /**
    * Tests that theme suggestion alter hooks work for templates.
    */
-  function testTemplateSuggestionsAlter() {
+  public function testTemplateSuggestionsAlter() {
     $this->drupalGet('theme-test/suggestion-alter');
     $this->assertText('Original template for testing hook_theme_suggestions_HOOK_alter().');
 
@@ -88,7 +88,7 @@ function testTemplateSuggestionsAlter() {
   /**
    * Tests that theme suggestion alter hooks work for specific theme calls.
    */
-  function testSpecificSuggestionsAlter() {
+  public function testSpecificSuggestionsAlter() {
     // Test that the default template is rendered.
     $this->drupalGet('theme-test/specific-suggestion-alter');
     $this->assertText('Template for testing specific theme calls.');
@@ -113,7 +113,7 @@ function testSpecificSuggestionsAlter() {
   /**
    * Tests that theme suggestion alter hooks work for theme functions.
    */
-  function testThemeFunctionSuggestionsAlter() {
+  public function testThemeFunctionSuggestionsAlter() {
     $this->drupalGet('theme-test/function-suggestion-alter');
     $this->assertText('Original theme function.');
 
@@ -157,7 +157,7 @@ public function testSuggestionsAlterInclude() {
    * hook_theme_suggestions_alter() should fire before
    * hook_theme_suggestions_HOOK_alter() within an extension (module or theme).
    */
-  function testExecutionOrder() {
+  public function testExecutionOrder() {
     // Install our test theme and module.
     $this->config('system.theme')
       ->set('default', 'test_theme')
diff --git a/core/modules/system/src/Tests/Theme/ThemeTest.php b/core/modules/system/src/Tests/Theme/ThemeTest.php
index 950e0739775c41fb32d78feec6ae460570987239..64f330e9422e3d314094567efa96f4f15ebbbdbc 100644
--- a/core/modules/system/src/Tests/Theme/ThemeTest.php
+++ b/core/modules/system/src/Tests/Theme/ThemeTest.php
@@ -39,7 +39,7 @@ protected function setUp() {
    *   - the render element's #attributes
    *   - any attributes set in the template's preprocessing function
    */
-  function testAttributeMerging() {
+  public function testAttributeMerging() {
     $theme_test_render_element = [
       'elements' => [
         '#attributes' => ['data-foo' => 'bar'],
@@ -54,7 +54,7 @@ function testAttributeMerging() {
   /**
    * Test that ThemeManager renders the expected data types.
    */
-  function testThemeDataTypes() {
+  public function testThemeDataTypes() {
     // theme_test_false is an implemented theme hook so \Drupal::theme() service
     // should return a string or an object that implements MarkupInterface,
     // even though the theme function itself can return anything.
@@ -79,7 +79,7 @@ function testThemeDataTypes() {
   /**
    * Test function theme_get_suggestions() for SA-CORE-2009-003.
    */
-  function testThemeSuggestions() {
+  public function testThemeSuggestions() {
     // Set the front page as something random otherwise the CLI
     // test runner fails.
     $this->config('system.site')->set('page.front', '/nobody-home')->save();
@@ -110,7 +110,7 @@ function testThemeSuggestions() {
    * separate file, so this test also ensures that that file is correctly loaded
    * when needed.
    */
-  function testPreprocessForSuggestions() {
+  public function testPreprocessForSuggestions() {
     // Test with both an unprimed and primed theme registry.
     drupal_theme_rebuild();
     for ($i = 0; $i < 2; $i++) {
@@ -142,7 +142,7 @@ public function testThemeOnNonHtmlRequest() {
   /**
    * Ensure page-front template suggestion is added when on front page.
    */
-  function testFrontPageThemeSuggestion() {
+  public function testFrontPageThemeSuggestion() {
     // Set the current route to user.login because theme_get_suggestions() will
     // query it to see if we are on the front page.
     $request = Request::create('/user/login');
@@ -161,7 +161,7 @@ function testFrontPageThemeSuggestion() {
    *
    * @see test_theme.info.yml
    */
-  function testCSSOverride() {
+  public function testCSSOverride() {
     // Reuse the same page as in testPreprocessForSuggestions(). We're testing
     // what is output to the HTML HEAD based on what is in a theme's .info.yml
     // file, so it doesn't matter what page we get, as long as it is themed with
@@ -186,7 +186,7 @@ function testCSSOverride() {
   /**
    * Ensures a themes template is overridable based on the 'template' filename.
    */
-  function testTemplateOverride() {
+  public function testTemplateOverride() {
     $this->config('system.theme')
       ->set('default', 'test_theme')
       ->save();
@@ -197,7 +197,7 @@ function testTemplateOverride() {
   /**
    * Ensures a theme template can override a theme function.
    */
-  function testFunctionOverride() {
+  public function testFunctionOverride() {
     $this->drupalGet('theme-test/function-template-overridden');
     $this->assertText('Success: Template overrides theme function.', 'Theme function overridden by test_theme template.');
   }
@@ -205,7 +205,7 @@ function testFunctionOverride() {
   /**
    * Test the listInfo() function.
    */
-  function testListThemes() {
+  public function testListThemes() {
     $theme_handler = $this->container->get('theme_handler');
     $theme_handler->install(['test_subtheme']);
     $themes = $theme_handler->listInfo();
@@ -230,7 +230,7 @@ function testListThemes() {
   /**
    * Tests child element rendering for 'render element' theme hooks.
    */
-  function testDrupalRenderChildren() {
+  public function testDrupalRenderChildren() {
     $element = [
       '#theme' => 'theme_test_render_element_children',
       'child' => [
@@ -251,7 +251,7 @@ function testDrupalRenderChildren() {
   /**
    * Tests theme can provide classes.
    */
-  function testClassLoading() {
+  public function testClassLoading() {
     new ThemeClass();
   }
 
@@ -270,7 +270,7 @@ public function testFindThemeTemplates() {
    * Some modules check the page array in template_preprocess_html(), so we
    * ensure that it has not been rendered prematurely.
    */
-  function testPreprocessHtml() {
+  public function testPreprocessHtml() {
     $this->drupalGet('');
     $attributes = $this->xpath('/html/body[@theme_test_page_variable="Page variable is an array."]');
     $this->assertTrue(count($attributes) == 1, 'In template_preprocess_html(), the page variable is still an array (not rendered yet).');
diff --git a/core/modules/system/src/Tests/Theme/TwigDebugMarkupTest.php b/core/modules/system/src/Tests/Theme/TwigDebugMarkupTest.php
index c6b6c51c58e1087f45d577f6b9a2755f709d7373..457fbad8bf57029a6001398aa6a97b7b4b0739b4 100644
--- a/core/modules/system/src/Tests/Theme/TwigDebugMarkupTest.php
+++ b/core/modules/system/src/Tests/Theme/TwigDebugMarkupTest.php
@@ -21,7 +21,7 @@ class TwigDebugMarkupTest extends WebTestBase {
   /**
    * Tests debug markup added to Twig template output.
    */
-  function testTwigDebugMarkup() {
+  public function testTwigDebugMarkup() {
     /** @var \Drupal\Core\Render\RendererInterface $renderer */
     $renderer = $this->container->get('renderer');
     $extension = twig_extension();
diff --git a/core/modules/system/src/Tests/Update/DependencyHookInvocationTest.php b/core/modules/system/src/Tests/Update/DependencyHookInvocationTest.php
index 9e5cc123b82ebdc1075173882af13f1f0b215d65..ef22f0e1b34d2d8e8d796c0051c3a1ac9b817b87 100644
--- a/core/modules/system/src/Tests/Update/DependencyHookInvocationTest.php
+++ b/core/modules/system/src/Tests/Update/DependencyHookInvocationTest.php
@@ -27,7 +27,7 @@ protected function setUp() {
   /**
    * Test the structure of the array returned by hook_update_dependencies().
    */
-  function testHookUpdateDependencies() {
+  public function testHookUpdateDependencies() {
     $update_dependencies = update_retrieve_dependencies();
     $this->assertTrue($update_dependencies['update_test_0'][8001]['update_test_1'] == 8001, 'An update function that has a dependency on two separate modules has the first dependency recorded correctly.');
     $this->assertTrue($update_dependencies['update_test_0'][8001]['update_test_2'] == 8002, 'An update function that has a dependency on two separate modules has the second dependency recorded correctly.');
diff --git a/core/modules/system/src/Tests/Update/DependencyMissingTest.php b/core/modules/system/src/Tests/Update/DependencyMissingTest.php
index fe208dc133c8e51feeaf98ab27bb2d9d0455ad48..407ef336084ce1a5bca6204eba9cf76d6e19c507 100644
--- a/core/modules/system/src/Tests/Update/DependencyMissingTest.php
+++ b/core/modules/system/src/Tests/Update/DependencyMissingTest.php
@@ -25,7 +25,7 @@ protected function setUp() {
     require_once \Drupal::root() . '/core/includes/update.inc';
   }
 
-  function testMissingUpdate() {
+  public function testMissingUpdate() {
     $starting_updates = [
       'update_test_2' => 8001,
     ];
diff --git a/core/modules/system/src/Tests/Update/DependencyOrderingTest.php b/core/modules/system/src/Tests/Update/DependencyOrderingTest.php
index f5c344fc0934d3a81d67ae2961de63744d5360ae..8616fb6ba9ad0974b3eea855b52824a77f3e08e4 100644
--- a/core/modules/system/src/Tests/Update/DependencyOrderingTest.php
+++ b/core/modules/system/src/Tests/Update/DependencyOrderingTest.php
@@ -26,7 +26,7 @@ protected function setUp() {
   /**
    * Test that updates within a single module run in the correct order.
    */
-  function testUpdateOrderingSingleModule() {
+  public function testUpdateOrderingSingleModule() {
     $starting_updates = [
       'update_test_1' => 8001,
     ];
@@ -42,7 +42,7 @@ function testUpdateOrderingSingleModule() {
   /**
    * Test that dependencies between modules are resolved correctly.
    */
-  function testUpdateOrderingModuleInterdependency() {
+  public function testUpdateOrderingModuleInterdependency() {
     $starting_updates = [
       'update_test_2' => 8001,
       'update_test_3' => 8001,
diff --git a/core/modules/system/src/Tests/Update/InvalidUpdateHookTest.php b/core/modules/system/src/Tests/Update/InvalidUpdateHookTest.php
index 60ac0c47c1c1c1b9e237a841bd5be32e6f65dc83..59c64f6240de2acfb8f199b4f96fccef47ea8812 100644
--- a/core/modules/system/src/Tests/Update/InvalidUpdateHookTest.php
+++ b/core/modules/system/src/Tests/Update/InvalidUpdateHookTest.php
@@ -41,7 +41,7 @@ protected function setUp() {
     $this->updateUser = $this->drupalCreateUser(['administer software updates']);
   }
 
-  function testInvalidUpdateHook() {
+  public function testInvalidUpdateHook() {
     // Confirm that a module with hook_update_8000() cannot be updated.
     $this->drupalLogin($this->updateUser);
     $this->drupalGet($this->updateUrl);
diff --git a/core/modules/system/src/Tests/Update/UpdatePathTestBase.php b/core/modules/system/src/Tests/Update/UpdatePathTestBase.php
index 1706e8b13924ccd04af9150b964bb4b7ea9fd425..f7f88c64860ef07c9b3e4bc2e515daff141c0400 100644
--- a/core/modules/system/src/Tests/Update/UpdatePathTestBase.php
+++ b/core/modules/system/src/Tests/Update/UpdatePathTestBase.php
@@ -132,7 +132,7 @@ abstract class UpdatePathTestBase extends WebTestBase {
    *   (optional) The ID of the test. Tests with the same id are reported
    *   together.
    */
-  function __construct($test_id = NULL) {
+  public function __construct($test_id = NULL) {
     parent::__construct($test_id);
     $this->zlibInstalled = function_exists('gzopen');
   }
diff --git a/core/modules/system/src/Tests/Update/UpdateScriptTest.php b/core/modules/system/src/Tests/Update/UpdateScriptTest.php
index 12574ee4d4d86d320fd8c765ffde61cca825352e..ed076b8156799e5eb7baa68b5d185db11444288b 100644
--- a/core/modules/system/src/Tests/Update/UpdateScriptTest.php
+++ b/core/modules/system/src/Tests/Update/UpdateScriptTest.php
@@ -49,7 +49,7 @@ protected function setUp() {
   /**
    * Tests access to the update script.
    */
-  function testUpdateAccess() {
+  public function testUpdateAccess() {
     // Try accessing update.php without the proper permission.
     $regular_user = $this->drupalCreateUser();
     $this->drupalLogin($regular_user);
@@ -93,7 +93,7 @@ function testUpdateAccess() {
   /**
    * Tests that requirements warnings and errors are correctly displayed.
    */
-  function testRequirements() {
+  public function testRequirements() {
     $update_script_test_config = $this->config('update_script_test.settings');
     $this->drupalLogin($this->updateUser);
 
@@ -146,7 +146,7 @@ function testRequirements() {
   /**
    * Tests the effect of using the update script on the theme system.
    */
-  function testThemeSystem() {
+  public function testThemeSystem() {
     // Since visiting update.php triggers a rebuild of the theme system from an
     // unusual maintenance mode environment, we check that this rebuild did not
     // put any incorrect information about the themes into the database.
@@ -160,7 +160,7 @@ function testThemeSystem() {
   /**
    * Tests update.php when there are no updates to apply.
    */
-  function testNoUpdateFunctionality() {
+  public function testNoUpdateFunctionality() {
     // Click through update.php with 'administer software updates' permission.
     $this->drupalLogin($this->updateUser);
     $this->drupalGet($this->updateUrl, ['external' => TRUE]);
@@ -186,7 +186,7 @@ function testNoUpdateFunctionality() {
   /**
    * Tests update.php after performing a successful update.
    */
-  function testSuccessfulUpdateFunctionality() {
+  public function testSuccessfulUpdateFunctionality() {
     $initial_maintenance_mode = $this->container->get('state')->get('system.maintenance_mode');
     $this->assertFalse($initial_maintenance_mode, 'Site is not in maintenance mode.');
     $this->updateScriptTest($initial_maintenance_mode);
@@ -220,7 +220,7 @@ function testSuccessfulUpdateFunctionality() {
   /**
    * Tests update.php while in maintenance mode.
    */
-  function testMaintenanceModeUpdateFunctionality() {
+  public function testMaintenanceModeUpdateFunctionality() {
     $this->container->get('state')
       ->set('system.maintenance_mode', TRUE);
     $initial_maintenance_mode = $this->container->get('state')
@@ -235,7 +235,7 @@ function testMaintenanceModeUpdateFunctionality() {
   /**
    * Tests perfoming updates with update.php in a multilingual environment.
    */
-  function testSuccessfulMultilingualUpdateFunctionality() {
+  public function testSuccessfulMultilingualUpdateFunctionality() {
     // Add some custom languages.
     foreach (['aa', 'bb'] as $language_code) {
       ConfigurableLanguage::create([
diff --git a/core/modules/system/src/Tests/Update/UpdatesWith7xTest.php b/core/modules/system/src/Tests/Update/UpdatesWith7xTest.php
index 3694cad78a7012ec40ef742e44ac9737c9158106..c2035d1335a878a7a4b188a0d0850adf7f1bd508 100644
--- a/core/modules/system/src/Tests/Update/UpdatesWith7xTest.php
+++ b/core/modules/system/src/Tests/Update/UpdatesWith7xTest.php
@@ -36,7 +36,7 @@ protected function setUp() {
     $this->updateUser = $this->drupalCreateUser(['administer software updates']);
   }
 
-  function testWith7x() {
+  public function testWith7x() {
     // Ensure that the minimum schema version is 8000, despite 7200 update
     // hooks and a 7XXX hook_update_last_removed().
     $this->assertEqual(drupal_get_installed_schema_version('update_test_with_7x'), 8000);
diff --git a/core/modules/system/tests/modules/ajax_forms_test/src/Callbacks.php b/core/modules/system/tests/modules/ajax_forms_test/src/Callbacks.php
index 4b3b039652617c92f12e3608508a2d6dc66de19e..0ad80c9250a1df953389553678a722f641eba077 100644
--- a/core/modules/system/tests/modules/ajax_forms_test/src/Callbacks.php
+++ b/core/modules/system/tests/modules/ajax_forms_test/src/Callbacks.php
@@ -15,7 +15,7 @@ class Callbacks {
   /**
    * Ajax callback triggered by select.
    */
-  function selectCallback($form, FormStateInterface $form_state) {
+  public function selectCallback($form, FormStateInterface $form_state) {
     $response = new AjaxResponse();
     $response->addCommand(new HtmlCommand('#ajax_selected_color', $form_state->getValue('select')));
     $response->addCommand(new DataCommand('#ajax_selected_color', 'form_state_value_select', $form_state->getValue('select')));
@@ -25,7 +25,7 @@ function selectCallback($form, FormStateInterface $form_state) {
   /**
    * Ajax callback triggered by checkbox.
    */
-  function checkboxCallback($form, FormStateInterface $form_state) {
+  public function checkboxCallback($form, FormStateInterface $form_state) {
     $response = new AjaxResponse();
     $response->addCommand(new HtmlCommand('#ajax_checkbox_value', (int) $form_state->getValue('checkbox')));
     $response->addCommand(new DataCommand('#ajax_checkbox_value', 'form_state_value_select', (int) $form_state->getValue('checkbox')));
@@ -35,7 +35,7 @@ function checkboxCallback($form, FormStateInterface $form_state) {
   /**
    * Ajax callback triggered by the checkbox in a #group.
    */
-  function checkboxGroupCallback($form, FormStateInterface $form_state) {
+  public function checkboxGroupCallback($form, FormStateInterface $form_state) {
     return $form['checkbox_in_group_wrapper'];
   }
 
diff --git a/core/modules/system/tests/modules/batch_test/src/Controller/BatchTestController.php b/core/modules/system/tests/modules/batch_test/src/Controller/BatchTestController.php
index 1cdaf5cc853dca82277675fa608ffc8e7afdc9c9..1d34f8a4592b868e5eb46f445cff6f6f21f7d363 100644
--- a/core/modules/system/tests/modules/batch_test/src/Controller/BatchTestController.php
+++ b/core/modules/system/tests/modules/batch_test/src/Controller/BatchTestController.php
@@ -95,7 +95,7 @@ public function testFinishRedirect() {
    * @return array
    *   Render array containing markup.
    */
-  function testProgrammatic($value = 1) {
+  public function testProgrammatic($value = 1) {
     $form_state = (new FormState())->setValues([
       'value' => $value,
     ]);
diff --git a/core/modules/system/tests/modules/display_variant_test/src/EventSubscriber/TestPageDisplayVariantSubscriber.php b/core/modules/system/tests/modules/display_variant_test/src/EventSubscriber/TestPageDisplayVariantSubscriber.php
index acfed444c4ad11688e4f25fbd8182ae3703c6f4a..e24266e0336586d0d7b7812ce3e932a7f7cb12f8 100644
--- a/core/modules/system/tests/modules/display_variant_test/src/EventSubscriber/TestPageDisplayVariantSubscriber.php
+++ b/core/modules/system/tests/modules/display_variant_test/src/EventSubscriber/TestPageDisplayVariantSubscriber.php
@@ -31,7 +31,7 @@ public function onSelectPageDisplayVariant(PageDisplayVariantSelectionEvent $eve
   /**
    * {@inheritdoc}
    */
-  static function getSubscribedEvents() {
+  public static function getSubscribedEvents() {
     $events[RenderEvents::SELECT_PAGE_DISPLAY_VARIANT][] = ['onSelectPageDisplayVariant'];
     return $events;
   }
diff --git a/core/modules/system/tests/modules/early_rendering_controller_test/src/TestDomainObjectViewSubscriber.php b/core/modules/system/tests/modules/early_rendering_controller_test/src/TestDomainObjectViewSubscriber.php
index 6dac62f6b7094bc55de8fb69331c2624b9d98ae3..e6152ca67f107b50e052e4c4aef2d820aa9217f3 100644
--- a/core/modules/system/tests/modules/early_rendering_controller_test/src/TestDomainObjectViewSubscriber.php
+++ b/core/modules/system/tests/modules/early_rendering_controller_test/src/TestDomainObjectViewSubscriber.php
@@ -37,7 +37,7 @@ public function onViewTestDomainObject(GetResponseForControllerResultEvent $even
   /**
    * {@inheritdoc}
    */
-  static function getSubscribedEvents() {
+  public static function getSubscribedEvents() {
     $events[KernelEvents::VIEW][] = ['onViewTestDomainObject'];
 
     return $events;
diff --git a/core/modules/system/tests/modules/entity_test/src/EntityTestDefinitionSubscriber.php b/core/modules/system/tests/modules/entity_test/src/EntityTestDefinitionSubscriber.php
index a31762e4ffd871029c17d73fe6cd382593b09c24..2b06d80bd6e2d858c06ac5714c56253f58260f8b 100644
--- a/core/modules/system/tests/modules/entity_test/src/EntityTestDefinitionSubscriber.php
+++ b/core/modules/system/tests/modules/entity_test/src/EntityTestDefinitionSubscriber.php
@@ -38,7 +38,7 @@ class EntityTestDefinitionSubscriber implements EventSubscriberInterface, Entity
   /**
    * {@inheritdoc}
    */
-  function __construct(StateInterface $state) {
+  public function __construct(StateInterface $state) {
     $this->state = $state;
   }
 
diff --git a/core/modules/system/tests/modules/form_test/src/Form/FormTestStoragePageCacheForm.php b/core/modules/system/tests/modules/form_test/src/Form/FormTestStoragePageCacheForm.php
index adca384af8ec33e5c5356a821c5cdfd3991a2225..f27e5e066e790c776d908e05b47b8745e8263cd6 100644
--- a/core/modules/system/tests/modules/form_test/src/Form/FormTestStoragePageCacheForm.php
+++ b/core/modules/system/tests/modules/form_test/src/Form/FormTestStoragePageCacheForm.php
@@ -49,7 +49,7 @@ public function buildForm(array $form, FormStateInterface $form_state) {
   /**
    * Form element #after_build callback: output the old form build-id.
    */
-  function form_test_storage_page_cache_old_build_id($form) {
+  public function form_test_storage_page_cache_old_build_id($form) {
     if (isset($form['#build_id_old'])) {
       $form['test_build_id_old']['#plain_text'] = $form['#build_id_old'];
     }
@@ -59,7 +59,7 @@ function form_test_storage_page_cache_old_build_id($form) {
   /**
    * Form submit callback: Rebuild the form and continue.
    */
-  function form_test_storage_page_cache_rebuild($form, FormStateInterface $form_state) {
+  public function form_test_storage_page_cache_rebuild($form, FormStateInterface $form_state) {
     $form_state->setRebuild();
   }
 
diff --git a/core/modules/system/tests/modules/form_test/src/Form/FormTestTableSelectFormBase.php b/core/modules/system/tests/modules/form_test/src/Form/FormTestTableSelectFormBase.php
index 0a5bd62a1c3355b63333388459bbd7967a74495c..9a1dc2e6c24b71215eebb9f2e711c0c1332c2b6c 100644
--- a/core/modules/system/tests/modules/form_test/src/Form/FormTestTableSelectFormBase.php
+++ b/core/modules/system/tests/modules/form_test/src/Form/FormTestTableSelectFormBase.php
@@ -23,7 +23,7 @@ abstract class FormTestTableSelectFormBase extends FormBase {
    * @return array
    *   A form with a tableselect element and a submit button.
    */
-  function tableselectFormBuilder($form, FormStateInterface $form_state, $element_properties) {
+  public function tableselectFormBuilder($form, FormStateInterface $form_state, $element_properties) {
     list($header, $options) = _form_test_tableselect_get_data();
 
     $form['tableselect'] = $element_properties;
diff --git a/core/modules/system/tests/modules/menu_test/src/Plugin/Menu/LocalTask/TestTasksSettingsSub1.php b/core/modules/system/tests/modules/menu_test/src/Plugin/Menu/LocalTask/TestTasksSettingsSub1.php
index cadaa9a0c921758fdddd92a48ad6ca4c706832ec..7ba7548846c0649f09732d26c16ac3c252743c63 100644
--- a/core/modules/system/tests/modules/menu_test/src/Plugin/Menu/LocalTask/TestTasksSettingsSub1.php
+++ b/core/modules/system/tests/modules/menu_test/src/Plugin/Menu/LocalTask/TestTasksSettingsSub1.php
@@ -12,14 +12,14 @@ class TestTasksSettingsSub1 extends LocalTaskDefault {
   /**
    * {@inheritdoc}
    */
-  function getTitle() {
+  public function getTitle() {
     return $this->t('Dynamic title for @class', ['@class' => 'TestTasksSettingsSub1']);
   }
 
   /**
    * {@inheritdoc}
    */
-  function getCacheTags() {
+  public function getCacheTags() {
     return ['kittens:ragdoll'];
   }
 
diff --git a/core/modules/system/tests/modules/module_autoload_test/src/SomeClass.php b/core/modules/system/tests/modules/module_autoload_test/src/SomeClass.php
index b46f37426c7a7731353f8f06bbdede26b45d9fa9..6cd97a0cb65acd5ebb91d07ca7a29dba72a9c33b 100644
--- a/core/modules/system/tests/modules/module_autoload_test/src/SomeClass.php
+++ b/core/modules/system/tests/modules/module_autoload_test/src/SomeClass.php
@@ -3,7 +3,7 @@
 namespace Drupal\module_autoload_test;
 
 class SomeClass {
-  function testMethod() {
+  public function testMethod() {
     return 'Drupal\\module_autoload_test\\SomeClass::testMethod() was invoked.';
   }
 
diff --git a/core/modules/system/tests/modules/service_provider_test/src/TestClass.php b/core/modules/system/tests/modules/service_provider_test/src/TestClass.php
index 542239faa324fa7b2c1c9d794f975aaa30600a0d..d521e1fdb99a98801560774cfe83d466d3bd8e62 100644
--- a/core/modules/system/tests/modules/service_provider_test/src/TestClass.php
+++ b/core/modules/system/tests/modules/service_provider_test/src/TestClass.php
@@ -57,7 +57,7 @@ public function onKernelResponseTest(FilterResponseEvent $event) {
    * @return array
    *   An array of event listener definitions.
    */
-  static function getSubscribedEvents() {
+  public static function getSubscribedEvents() {
     $events[KernelEvents::REQUEST][] = ['onKernelRequestTest'];
     $events[KernelEvents::RESPONSE][] = ['onKernelResponseTest'];
     return $events;
diff --git a/core/modules/system/tests/modules/theme_test/src/EventSubscriber/ThemeTestSubscriber.php b/core/modules/system/tests/modules/theme_test/src/EventSubscriber/ThemeTestSubscriber.php
index 650d44d412b831f4cd6a4f21ec2ba4033661a1ee..8ac86f1a94a83793541643216b73a5c9d1346e07 100644
--- a/core/modules/system/tests/modules/theme_test/src/EventSubscriber/ThemeTestSubscriber.php
+++ b/core/modules/system/tests/modules/theme_test/src/EventSubscriber/ThemeTestSubscriber.php
@@ -91,7 +91,7 @@ public function onView(GetResponseEvent $event) {
   /**
    * {@inheritdoc}
    */
-  static function getSubscribedEvents() {
+  public static function getSubscribedEvents() {
     $events[KernelEvents::REQUEST][] = ['onRequest'];
     $events[KernelEvents::VIEW][] = ['onView', -1000];
     return $events;
diff --git a/core/modules/system/tests/modules/theme_test/src/ThemeTestController.php b/core/modules/system/tests/modules/theme_test/src/ThemeTestController.php
index 89cd3821539ae626f2fe9f377b11dffe0cc5fe39..f1ed8f3a991b9c2e411953a32b3744d8a272af48 100644
--- a/core/modules/system/tests/modules/theme_test/src/ThemeTestController.php
+++ b/core/modules/system/tests/modules/theme_test/src/ThemeTestController.php
@@ -87,35 +87,35 @@ public function testRequestListener() {
   /**
    * Menu callback for testing suggestion alter hooks with template files.
    */
-  function suggestionProvided() {
+  public function suggestionProvided() {
     return ['#theme' => 'theme_test_suggestion_provided'];
   }
 
   /**
    * Menu callback for testing suggestion alter hooks with template files.
    */
-  function suggestionAlter() {
+  public function suggestionAlter() {
     return ['#theme' => 'theme_test_suggestions'];
   }
 
   /**
    * Menu callback for testing hook_theme_suggestions_alter().
    */
-  function generalSuggestionAlter() {
+  public function generalSuggestionAlter() {
     return ['#theme' => 'theme_test_general_suggestions'];
   }
 
   /**
    * Menu callback for testing suggestion alter hooks with specific suggestions.
    */
-  function specificSuggestionAlter() {
+  public function specificSuggestionAlter() {
     return ['#theme' => 'theme_test_specific_suggestions__variant'];
   }
 
   /**
    * Menu callback for testing suggestion alter hooks with theme functions.
    */
-  function functionSuggestionAlter() {
+  public function functionSuggestionAlter() {
     return ['#theme' => 'theme_test_function_suggestions'];
   }
 
@@ -123,7 +123,7 @@ function functionSuggestionAlter() {
   /**
    * Menu callback for testing includes with suggestion alter hooks.
    */
-  function suggestionAlterInclude() {
+  public function suggestionAlterInclude() {
     return ['#theme' => 'theme_test_suggestions_include'];
   }
 
diff --git a/core/modules/system/tests/src/Functional/Bootstrap/DrupalSetMessageTest.php b/core/modules/system/tests/src/Functional/Bootstrap/DrupalSetMessageTest.php
index 0931d65de12776bd742d16ef6953bac591270755..976e8bebfe3607902bfd137ee2ebe9dfe10d6ab3 100644
--- a/core/modules/system/tests/src/Functional/Bootstrap/DrupalSetMessageTest.php
+++ b/core/modules/system/tests/src/Functional/Bootstrap/DrupalSetMessageTest.php
@@ -21,7 +21,7 @@ class DrupalSetMessageTest extends BrowserTestBase {
   /**
    * Tests drupal_set_message().
    */
-  function testDrupalSetMessage() {
+  public function testDrupalSetMessage() {
     // The page at system-test/drupal-set-message sets two messages and then
     // removes the first before it is displayed.
     $this->drupalGet('system-test/drupal-set-message');
diff --git a/core/modules/system/tests/src/Functional/Cache/CacheTestBase.php b/core/modules/system/tests/src/Functional/Cache/CacheTestBase.php
index fb552fdb6922e6d8bb02f2f2d57c6e46b271383c..f1439eaeb22c653be7f253ab0452cd701b54dd1a 100644
--- a/core/modules/system/tests/src/Functional/Cache/CacheTestBase.php
+++ b/core/modules/system/tests/src/Functional/Cache/CacheTestBase.php
@@ -71,7 +71,7 @@ protected function assertCacheExists($message, $var = NULL, $cid = NULL, $bin =
    * @param $bin
    *   The bin the cache item was stored in.
    */
-  function assertCacheRemoved($message, $cid = NULL, $bin = NULL) {
+  public function assertCacheRemoved($message, $cid = NULL, $bin = NULL) {
     if ($bin == NULL) {
       $bin = $this->defaultBin;
     }
diff --git a/core/modules/system/tests/src/Functional/Cache/ClearTest.php b/core/modules/system/tests/src/Functional/Cache/ClearTest.php
index fd9641c59b947d5c7eff252568ef23fb6d64a4f5..bec6d502fc793598831269ec3d92b1e4a85236fa 100644
--- a/core/modules/system/tests/src/Functional/Cache/ClearTest.php
+++ b/core/modules/system/tests/src/Functional/Cache/ClearTest.php
@@ -21,7 +21,7 @@ protected function setUp() {
   /**
    * Tests drupal_flush_all_caches().
    */
-  function testFlushAllCaches() {
+  public function testFlushAllCaches() {
     // Create cache entries for each flushed cache bin.
     $bins = Cache::getBins();
     $this->assertTrue($bins, 'Cache::getBins() returned bins to flush.');
diff --git a/core/modules/system/tests/src/Functional/Datetime/DrupalDateTimeTest.php b/core/modules/system/tests/src/Functional/Datetime/DrupalDateTimeTest.php
index cc23f4895b79d70e0323cf3c7124624379711f30..d2114fdf8ec26c1873d2cd0a01c76e15c9fe9882 100644
--- a/core/modules/system/tests/src/Functional/Datetime/DrupalDateTimeTest.php
+++ b/core/modules/system/tests/src/Functional/Datetime/DrupalDateTimeTest.php
@@ -101,7 +101,7 @@ public function testDateTimezone() {
   /**
    * Tests the ability to override the time zone in the format method.
    */
-  function testTimezoneFormat() {
+  public function testTimezoneFormat() {
     // Create a date in UTC
     $date = DrupalDateTime::createFromTimestamp(87654321, 'UTC');
 
diff --git a/core/modules/system/tests/src/Functional/DrupalKernel/ContentNegotiationTest.php b/core/modules/system/tests/src/Functional/DrupalKernel/ContentNegotiationTest.php
index 82e2e9249e0c5d208a23de4f2cb51c3c6c5e8428..58157369b3db186b02a5f096c0a36b1d1fdfb2df 100644
--- a/core/modules/system/tests/src/Functional/DrupalKernel/ContentNegotiationTest.php
+++ b/core/modules/system/tests/src/Functional/DrupalKernel/ContentNegotiationTest.php
@@ -19,7 +19,7 @@ class ContentNegotiationTest extends BrowserTestBase {
    *
    * @see https://www.drupal.org/node/1716790
    */
-  function testBogusAcceptHeader() {
+  public function testBogusAcceptHeader() {
     $tests = [
       // See https://bugs.webkit.org/show_bug.cgi?id=27267.
       'Firefox 3.5 (2009)' => 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
diff --git a/core/modules/system/tests/src/Functional/Entity/EntityViewControllerTest.php b/core/modules/system/tests/src/Functional/Entity/EntityViewControllerTest.php
index 11a9b2e4a9e949c7c302fdfad3d80c3ef5a38f12..684e0be8fc918759e7b841abc319157178592714 100644
--- a/core/modules/system/tests/src/Functional/Entity/EntityViewControllerTest.php
+++ b/core/modules/system/tests/src/Functional/Entity/EntityViewControllerTest.php
@@ -41,7 +41,7 @@ protected function setUp() {
   /**
    * Tests EntityViewController.
    */
-  function testEntityViewController() {
+  public function testEntityViewController() {
     $get_label_markup = function($label) {
       return '<h1 class="page-title">
             <div class="field field--name-name field--type-string field--label-hidden field__item">' . $label . '</div>
diff --git a/core/modules/system/tests/src/Functional/File/ConfigTest.php b/core/modules/system/tests/src/Functional/File/ConfigTest.php
index 9ac71dc500b5c874906762d11e660195bb699491..da2003aa7d2fbaf0052a26fbd73c5007d82376b9 100644
--- a/core/modules/system/tests/src/Functional/File/ConfigTest.php
+++ b/core/modules/system/tests/src/Functional/File/ConfigTest.php
@@ -19,7 +19,7 @@ protected function setUp(){
   /**
    * Tests file configuration page.
    */
-  function testFileConfigurationPage() {
+  public function testFileConfigurationPage() {
     $this->drupalGet('admin/config/media/file-system');
 
     // Set the file paths to non-default values.
diff --git a/core/modules/system/tests/src/Functional/File/FileSaveHtaccessLoggingTest.php b/core/modules/system/tests/src/Functional/File/FileSaveHtaccessLoggingTest.php
index 6da63ee0ee5dd187e82af1a2930dd1b1e5841228..442591d1539111bf71786b436f7dadef7d7acc70 100644
--- a/core/modules/system/tests/src/Functional/File/FileSaveHtaccessLoggingTest.php
+++ b/core/modules/system/tests/src/Functional/File/FileSaveHtaccessLoggingTest.php
@@ -17,7 +17,7 @@ class FileSaveHtaccessLoggingTest extends BrowserTestBase {
   /**
    * Tests file_save_htaccess().
    */
-  function testHtaccessSave() {
+  public function testHtaccessSave() {
     // Prepare test directories.
     $private = $this->publicFilesDirectory . '/test/private';
 
diff --git a/core/modules/system/tests/src/Functional/FileTransfer/FileTransferTest.php b/core/modules/system/tests/src/Functional/FileTransfer/FileTransferTest.php
index 85d624d76b8b78cbbaea5db7c180a07bddd5e0c3..76d8be8009f3d3aeafaadba66c73690e1d3bb3df 100644
--- a/core/modules/system/tests/src/Functional/FileTransfer/FileTransferTest.php
+++ b/core/modules/system/tests/src/Functional/FileTransfer/FileTransferTest.php
@@ -23,7 +23,7 @@ protected function setUp() {
     $this->testConnection = TestFileTransfer::factory(\Drupal::root(), ['hostname' => $this->hostname, 'username' => $this->username, 'password' => $this->password, 'port' => $this->port]);
   }
 
-  function _getFakeModuleFiles() {
+  public function _getFakeModuleFiles() {
     $files = [
       'fake.module',
       'fake.info.yml',
@@ -37,7 +37,7 @@ function _getFakeModuleFiles() {
     return $files;
   }
 
-  function _buildFakeModule() {
+  public function _buildFakeModule() {
     $location = 'temporary://fake';
     if (is_dir($location)) {
       $ret = 0;
@@ -53,7 +53,7 @@ function _buildFakeModule() {
     return $location;
   }
 
-  function _writeDirectory($base, $files = []) {
+  public function _writeDirectory($base, $files = []) {
     mkdir($base);
     foreach ($files as $key => $file) {
       if (is_array($file)) {
@@ -66,7 +66,7 @@ function _writeDirectory($base, $files = []) {
     }
   }
 
-  function testJail() {
+  public function testJail() {
     $source = $this->_buildFakeModule();
 
     // This convoluted piece of code is here because our testing framework does
diff --git a/core/modules/system/tests/src/Functional/FileTransfer/MockTestConnection.php b/core/modules/system/tests/src/Functional/FileTransfer/MockTestConnection.php
index e645f4e4fbf5047e08fd02c7a4c444afbf3847d3..029e72c95ad8afb92dc8c9797495467ae4a92320 100644
--- a/core/modules/system/tests/src/Functional/FileTransfer/MockTestConnection.php
+++ b/core/modules/system/tests/src/Functional/FileTransfer/MockTestConnection.php
@@ -10,11 +10,11 @@ class MockTestConnection {
   protected $commandsRun = [];
   public $connectionString;
 
-  function run($cmd) {
+  public function run($cmd) {
     $this->commandsRun[] = $cmd;
   }
 
-  function flushCommands() {
+  public function flushCommands() {
     $out = $this->commandsRun;
     $this->commandsRun = [];
     return $out;
diff --git a/core/modules/system/tests/src/Functional/FileTransfer/TestFileTransfer.php b/core/modules/system/tests/src/Functional/FileTransfer/TestFileTransfer.php
index e02ee98e4b8dd367020ec16d4b83d66cea92f623..ca11ad0f5ab53c98db13e11aa6782c94edc6490b 100644
--- a/core/modules/system/tests/src/Functional/FileTransfer/TestFileTransfer.php
+++ b/core/modules/system/tests/src/Functional/FileTransfer/TestFileTransfer.php
@@ -19,11 +19,11 @@ class TestFileTransfer extends FileTransfer {
    */
   public $shouldIsDirectoryReturnTrue = FALSE;
 
-  function __construct($jail, $username, $password, $hostname = 'localhost', $port = 9999) {
+  public function __construct($jail, $username, $password, $hostname = 'localhost', $port = 9999) {
     parent::__construct($jail, $username, $password, $hostname, $port);
   }
 
-  static function factory($jail, $settings) {
+  public static function factory($jail, $settings) {
     return new TestFileTransfer($jail, $settings['username'], $settings['password'], $settings['hostname'], $settings['port']);
   }
 
@@ -32,7 +32,7 @@ public function connect() {
     $this->connection->connectionString = 'test://' . urlencode($this->username) . ':' . urlencode($this->password) . "@$this->host:$this->port/";
   }
 
-  function copyFileJailed($source, $destination) {
+  public function copyFileJailed($source, $destination) {
     $this->connection->run("copyFile $source $destination");
   }
 
@@ -40,25 +40,25 @@ protected function removeDirectoryJailed($directory) {
     $this->connection->run("rmdir $directory");
   }
 
-  function createDirectoryJailed($directory) {
+  public function createDirectoryJailed($directory) {
     $this->connection->run("mkdir $directory");
   }
 
-  function removeFileJailed($destination) {
+  public function removeFileJailed($destination) {
     if (!ftp_delete($this->connection, $item)) {
       throw new FileTransferException('Unable to remove to file @file.', NULL, ['@file' => $item]);
     }
   }
 
-  function isDirectory($path) {
+  public function isDirectory($path) {
     return $this->shouldIsDirectoryReturnTrue;
   }
 
-  function isFile($path) {
+  public function isFile($path) {
     return FALSE;
   }
 
-  function chmodJailed($path, $mode, $recursive) {
+  public function chmodJailed($path, $mode, $recursive) {
     return;
   }
 
diff --git a/core/modules/system/tests/src/Functional/Form/FormObjectTest.php b/core/modules/system/tests/src/Functional/Form/FormObjectTest.php
index 67d7ecb0dd1b44756d18121cdb361f4eb55d32ed..34ebb2e79ad1f4a0f38a007412c088f2ca5a89de 100644
--- a/core/modules/system/tests/src/Functional/Form/FormObjectTest.php
+++ b/core/modules/system/tests/src/Functional/Form/FormObjectTest.php
@@ -37,7 +37,7 @@ protected function setUp() {
    *
    * @see \Drupal\form_test\EventSubscriber\FormTestEventSubscriber::onKernelRequest()
    */
-  function testObjectFormCallback() {
+  public function testObjectFormCallback() {
     $config_factory = $this->container->get('config.factory');
 
     $this->drupalGet('form-test/object-builder');
diff --git a/core/modules/system/tests/src/Functional/Form/RedirectTest.php b/core/modules/system/tests/src/Functional/Form/RedirectTest.php
index 6c09c2d82233ad6c6fd7a667761cba64b6f8c638..a4c9e15b3ce3668b498c53cbd45e03ca2a429bfc 100644
--- a/core/modules/system/tests/src/Functional/Form/RedirectTest.php
+++ b/core/modules/system/tests/src/Functional/Form/RedirectTest.php
@@ -21,7 +21,7 @@ class RedirectTest extends BrowserTestBase {
   /**
    * Tests form redirection.
    */
-  function testRedirect() {
+  public function testRedirect() {
     $path = 'form-test/redirect';
     $options = ['query' => ['foo' => 'bar']];
     $options['absolute'] = TRUE;
diff --git a/core/modules/system/tests/src/Functional/Module/ClassLoaderTest.php b/core/modules/system/tests/src/Functional/Module/ClassLoaderTest.php
index 9a81499a2804e83fb6ebec3f484058914c57be03..779a288a7bfbbd50b041c47d2e29822ca17fba43 100644
--- a/core/modules/system/tests/src/Functional/Module/ClassLoaderTest.php
+++ b/core/modules/system/tests/src/Functional/Module/ClassLoaderTest.php
@@ -21,7 +21,7 @@ class ClassLoaderTest extends BrowserTestBase {
    *
    * @see \Drupal\module_autoload_test\SomeClass
    */
-  function testClassLoading() {
+  public function testClassLoading() {
     // Enable the module_test and module_autoload_test modules.
     \Drupal::service('module_installer')->install(['module_test', 'module_autoload_test'], FALSE);
     $this->resetAll();
@@ -38,7 +38,7 @@ function testClassLoading() {
    *
    * @see \Drupal\module_autoload_test\SomeClass
    */
-  function testClassLoadingNotInstalledModules() {
+  public function testClassLoadingNotInstalledModules() {
     // Enable the module_test module.
     \Drupal::service('module_installer')->install(['module_test'], FALSE);
     $this->resetAll();
@@ -55,7 +55,7 @@ function testClassLoadingNotInstalledModules() {
    *
    * @see \Drupal\module_autoload_test\SomeClass
    */
-  function testClassLoadingDisabledModules() {
+  public function testClassLoadingDisabledModules() {
     // Enable the module_test and module_autoload_test modules.
     \Drupal::service('module_installer')->install(['module_test', 'module_autoload_test'], FALSE);
     $this->resetAll();
diff --git a/core/modules/system/tests/src/Functional/Module/ModuleTestBase.php b/core/modules/system/tests/src/Functional/Module/ModuleTestBase.php
index 704cbbaf64d8548c9c092683f7f8a3c3b13ddcff..392f2875e6c679fc1e7dc9dc8e55d468fc3122c7 100644
--- a/core/modules/system/tests/src/Functional/Module/ModuleTestBase.php
+++ b/core/modules/system/tests/src/Functional/Module/ModuleTestBase.php
@@ -38,7 +38,7 @@ protected function setUp() {
    *   (optional) Whether or not to assert that there are tables that match the
    *   specified base table. Defaults to TRUE.
    */
-  function assertTableCount($base_table, $count = TRUE) {
+  public function assertTableCount($base_table, $count = TRUE) {
     $tables = db_find_tables(Database::getConnection()->prefixTables('{' . $base_table . '}') . '%');
 
     if ($count) {
@@ -53,7 +53,7 @@ function assertTableCount($base_table, $count = TRUE) {
    * @param $module
    *   The name of the module.
    */
-  function assertModuleTablesExist($module) {
+  public function assertModuleTablesExist($module) {
     $tables = array_keys(drupal_get_module_schema($module));
     $tables_exist = TRUE;
     foreach ($tables as $table) {
@@ -70,7 +70,7 @@ function assertModuleTablesExist($module) {
    * @param $module
    *   The name of the module.
    */
-  function assertModuleTablesDoNotExist($module) {
+  public function assertModuleTablesDoNotExist($module) {
     $tables = array_keys(drupal_get_module_schema($module));
     $tables_exist = FALSE;
     foreach ($tables as $table) {
@@ -90,7 +90,7 @@ function assertModuleTablesDoNotExist($module) {
    * @return bool
    *   TRUE if configuration has been installed, FALSE otherwise.
    */
-  function assertModuleConfig($module) {
+  public function assertModuleConfig($module) {
     $module_config_dir = drupal_get_path('module', $module) . '/' . InstallStorage::CONFIG_INSTALL_DIRECTORY;
     if (!is_dir($module_config_dir)) {
       return;
@@ -132,7 +132,7 @@ function assertModuleConfig($module) {
    * @return bool
    *   TRUE if no configuration was found, FALSE otherwise.
    */
-  function assertNoModuleConfig($module) {
+  public function assertNoModuleConfig($module) {
     $names = \Drupal::configFactory()->listAll($module . '.');
     return $this->assertFalse($names, format_string('No configuration found for @module module.', ['@module' => $module]));
   }
@@ -145,7 +145,7 @@ function assertNoModuleConfig($module) {
    * @param $enabled
    *   Expected module state.
    */
-  function assertModules(array $modules, $enabled) {
+  public function assertModules(array $modules, $enabled) {
     $this->rebuildContainer();
     foreach ($modules as $module) {
       if ($enabled) {
@@ -178,7 +178,7 @@ function assertModules(array $modules, $enabled) {
    * @param $link
    *   A link to associate with the message.
    */
-  function assertLogMessage($type, $message, $variables = [], $severity = RfcLogLevel::NOTICE, $link = '') {
+  public function assertLogMessage($type, $message, $variables = [], $severity = RfcLogLevel::NOTICE, $link = '') {
     $count = db_select('watchdog', 'w')
       ->condition('type', $type)
       ->condition('message', $message)
diff --git a/core/modules/system/tests/src/Functional/Module/UninstallTest.php b/core/modules/system/tests/src/Functional/Module/UninstallTest.php
index c5225ee5776bf6f7c9968fd016eb5c7b9dbc66f3..2b17b8fcf6932f77b25447c3db8f53c705860703 100644
--- a/core/modules/system/tests/src/Functional/Module/UninstallTest.php
+++ b/core/modules/system/tests/src/Functional/Module/UninstallTest.php
@@ -26,7 +26,7 @@ class UninstallTest extends BrowserTestBase {
   /**
    * Tests the hook_modules_uninstalled() of the user module.
    */
-  function testUserPermsUninstalled() {
+  public function testUserPermsUninstalled() {
     // Uninstalls the module_test module, so hook_modules_uninstalled()
     // is executed.
     $this->container->get('module_installer')->uninstall(['module_test']);
@@ -38,7 +38,7 @@ function testUserPermsUninstalled() {
   /**
    * Tests the Uninstall page and Uninstall confirmation page.
    */
-  function testUninstallPage() {
+  public function testUninstallPage() {
     $account = $this->drupalCreateUser(['administer modules']);
     $this->drupalLogin($account);
 
diff --git a/core/modules/system/tests/src/Functional/Path/UrlAlterFunctionalTest.php b/core/modules/system/tests/src/Functional/Path/UrlAlterFunctionalTest.php
index 13c592d1b220daa6d99d2cbd24d4af730a19468d..271774169f0e499f223abc11db43898f7a80b55e 100644
--- a/core/modules/system/tests/src/Functional/Path/UrlAlterFunctionalTest.php
+++ b/core/modules/system/tests/src/Functional/Path/UrlAlterFunctionalTest.php
@@ -24,7 +24,7 @@ class UrlAlterFunctionalTest extends BrowserTestBase {
   /**
    * Test that URL altering works and that it occurs in the correct order.
    */
-  function testUrlAlter() {
+  public function testUrlAlter() {
     // Ensure that the url_alias table exists after Drupal installation.
     $this->assertTrue(Database::getConnection()->schema()->tableExists('url_alias'), 'The url_alias table exists after Drupal installation.');
 
diff --git a/core/modules/system/tests/src/Functional/Render/DisplayVariantTest.php b/core/modules/system/tests/src/Functional/Render/DisplayVariantTest.php
index 449046276e6105e85ec1241917ac3a6c42ee048a..2f5415ba7c449280b1e5376929d89dcd245abee9 100644
--- a/core/modules/system/tests/src/Functional/Render/DisplayVariantTest.php
+++ b/core/modules/system/tests/src/Functional/Render/DisplayVariantTest.php
@@ -21,7 +21,7 @@ class DisplayVariantTest extends BrowserTestBase {
   /**
    * Tests selecting the variant and passing configuration.
    */
-  function testPageDisplayVariantSelectionEvent() {
+  public function testPageDisplayVariantSelectionEvent() {
     // Tests that our display variant was selected, and that its configuration
     // was passed correctly. If the configuration wasn't passed, we'd get an
     // error page here.
diff --git a/core/modules/system/tests/src/Functional/System/DateTimeTest.php b/core/modules/system/tests/src/Functional/System/DateTimeTest.php
index 1f3f9779f089a2a37af93d9f0a62b82d440fcd0d..3d35f96e2e760aa91728e177bb2404fed3b98a1f 100644
--- a/core/modules/system/tests/src/Functional/System/DateTimeTest.php
+++ b/core/modules/system/tests/src/Functional/System/DateTimeTest.php
@@ -39,7 +39,7 @@ protected function setUp() {
   /**
    * Test time zones and DST handling.
    */
-  function testTimeZoneHandling() {
+  public function testTimeZoneHandling() {
     // Setup date/time settings for Honolulu time.
     $config = $this->config('system.date')
       ->set('timezone.default', 'Pacific/Honolulu')
@@ -76,7 +76,7 @@ function testTimeZoneHandling() {
   /**
    * Test date format configuration.
    */
-  function testDateFormatConfiguration() {
+  public function testDateFormatConfiguration() {
     // Confirm 'no custom date formats available' message appears.
     $this->drupalGet('admin/config/regional/date-time');
 
@@ -167,7 +167,7 @@ function testDateFormatConfiguration() {
   /**
    * Test handling case with invalid data in selectors (like February, 31st).
    */
-  function testEnteringDateTimeViaSelectors() {
+  public function testEnteringDateTimeViaSelectors() {
 
     $this->drupalCreateContentType(['type' => 'page_with_date', 'name' => 'Page with date']);
 
diff --git a/core/modules/system/tests/src/Functional/System/IndexPhpTest.php b/core/modules/system/tests/src/Functional/System/IndexPhpTest.php
index 36cdb7b916530a56eb7323461048169198ceab40..2bf098931d61f3c5b8cac33d8d5f7630a68b0401 100644
--- a/core/modules/system/tests/src/Functional/System/IndexPhpTest.php
+++ b/core/modules/system/tests/src/Functional/System/IndexPhpTest.php
@@ -17,7 +17,7 @@ protected function setUp() {
   /**
    * Test index.php handling.
    */
-  function testIndexPhpHandling() {
+  public function testIndexPhpHandling() {
     $index_php = $GLOBALS['base_url'] . '/index.php';
 
     $this->drupalGet($index_php, ['external' => TRUE]);
diff --git a/core/modules/system/tests/src/Functional/System/MainContentFallbackTest.php b/core/modules/system/tests/src/Functional/System/MainContentFallbackTest.php
index f953e09853a760c32c4215accd58f6e807d4f66e..931b84ce2422a2ef6d7aa9870319596bcf8a96c2 100644
--- a/core/modules/system/tests/src/Functional/System/MainContentFallbackTest.php
+++ b/core/modules/system/tests/src/Functional/System/MainContentFallbackTest.php
@@ -39,7 +39,7 @@ protected function setUp() {
   /**
    * Test availability of main content: Drupal falls back to SimplePageVariant.
    */
-  function testMainContentFallback() {
+  public function testMainContentFallback() {
     $edit = [];
     // Uninstall the block module.
     $edit['uninstall[block]'] = 'block';
diff --git a/core/modules/system/tests/src/Functional/System/RetrieveFileTest.php b/core/modules/system/tests/src/Functional/System/RetrieveFileTest.php
index 5cf23648fd6595b60000c74012ea597d9e3cdccf..ef12a51adeba56b0b680cccb519fa8d4fc38ceb2 100644
--- a/core/modules/system/tests/src/Functional/System/RetrieveFileTest.php
+++ b/core/modules/system/tests/src/Functional/System/RetrieveFileTest.php
@@ -13,7 +13,7 @@ class RetrieveFileTest extends BrowserTestBase {
   /**
    * Invokes system_retrieve_file() in several scenarios.
    */
-  function testFileRetrieving() {
+  public function testFileRetrieving() {
     // Test 404 handling by trying to fetch a randomly named file.
     drupal_mkdir($sourcedir = 'public://' . $this->randomMachineName());
     $filename = 'Файл для тестирования ' . $this->randomMachineName();
diff --git a/core/modules/system/tests/src/Functional/System/SystemAuthorizeTest.php b/core/modules/system/tests/src/Functional/System/SystemAuthorizeTest.php
index 01984a358153557626df763b41ed93896cc28332..8fa81ac2904b17dca484bf5026f5ed427a947c5a 100644
--- a/core/modules/system/tests/src/Functional/System/SystemAuthorizeTest.php
+++ b/core/modules/system/tests/src/Functional/System/SystemAuthorizeTest.php
@@ -36,14 +36,14 @@ protected function setUp() {
    *
    * @see system_authorized_init()
    */
-  function drupalGetAuthorizePHP($page_title = 'system-test-auth') {
+  public function drupalGetAuthorizePHP($page_title = 'system-test-auth') {
     $this->drupalGet('system-test/authorize-init/' . $page_title);
   }
 
   /**
    * Tests the FileTransfer hooks
    */
-  function testFileTransferHooks() {
+  public function testFileTransferHooks() {
     $page_title = $this->randomMachineName(16);
     $this->drupalGetAuthorizePHP($page_title);
     $this->assertTitle(strtr('@title | Drupal', ['@title' => $page_title]), 'authorize.php page title is correct.');
diff --git a/core/modules/system/tests/src/Functional/System/TokenScanTest.php b/core/modules/system/tests/src/Functional/System/TokenScanTest.php
index a43470a7cb02e0296d750299e9d0c5b024b5af50..f284aa978b4e88e4405bcdf0cc0c1a23432942e9 100644
--- a/core/modules/system/tests/src/Functional/System/TokenScanTest.php
+++ b/core/modules/system/tests/src/Functional/System/TokenScanTest.php
@@ -14,7 +14,7 @@ class TokenScanTest extends BrowserTestBase {
   /**
    * Scans dummy text, then tests the output.
    */
-  function testTokenScan() {
+  public function testTokenScan() {
     // Define text with valid and not valid, fake and existing token-like
     // strings.
     $text = 'First a [valid:simple], but dummy token, and a dummy [valid:token with: spaces].';
diff --git a/core/modules/system/tests/src/Functional/Theme/EngineNyanCatTest.php b/core/modules/system/tests/src/Functional/Theme/EngineNyanCatTest.php
index 6af03954817064bc681313da61eebebea112d680..6dca1b38d3cd83df9f3cf6318979394921a3047e 100644
--- a/core/modules/system/tests/src/Functional/Theme/EngineNyanCatTest.php
+++ b/core/modules/system/tests/src/Functional/Theme/EngineNyanCatTest.php
@@ -26,7 +26,7 @@ protected function setUp() {
   /**
    * Ensures a theme's template is overridable based on the 'template' filename.
    */
-  function testTemplateOverride() {
+  public function testTemplateOverride() {
     $this->config('system.theme')
       ->set('default', 'test_theme_nyan_cat_engine')
       ->save();
diff --git a/core/modules/system/tests/src/Functional/Theme/FastTest.php b/core/modules/system/tests/src/Functional/Theme/FastTest.php
index 66426ee113f74b45572774e2fbc000bed81107bc..d8f85f1f4a49c45feeb28f2c137eb14593541c4e 100644
--- a/core/modules/system/tests/src/Functional/Theme/FastTest.php
+++ b/core/modules/system/tests/src/Functional/Theme/FastTest.php
@@ -26,7 +26,7 @@ protected function setUp() {
   /**
    * Tests access to user autocompletion and verify the correct results.
    */
-  function testUserAutocomplete() {
+  public function testUserAutocomplete() {
     $this->drupalLogin($this->account);
     $this->drupalGet('user/autocomplete', ['query' => ['q' => $this->account->getUsername()]]);
     $this->assertRaw($this->account->getUsername());
diff --git a/core/modules/system/tests/src/Functional/Theme/ThemeEarlyInitializationTest.php b/core/modules/system/tests/src/Functional/Theme/ThemeEarlyInitializationTest.php
index f899effaa950ae26911d99fe85cafe333a77cb89..040dfabfce91fee3b72b65db8e52ab431aebaacb 100644
--- a/core/modules/system/tests/src/Functional/Theme/ThemeEarlyInitializationTest.php
+++ b/core/modules/system/tests/src/Functional/Theme/ThemeEarlyInitializationTest.php
@@ -22,7 +22,7 @@ class ThemeEarlyInitializationTest extends BrowserTestBase {
   /**
    * Test that the theme system can generate output in a request listener.
    */
-  function testRequestListener() {
+  public function testRequestListener() {
     $this->drupalGet('theme-test/request-listener');
     // Verify that themed output generated in the request listener appears.
     $this->assertRaw('Themed output generated in a KernelEvents::REQUEST listener');
diff --git a/core/modules/system/tests/src/Functional/Theme/ThemeInfoTest.php b/core/modules/system/tests/src/Functional/Theme/ThemeInfoTest.php
index d81b6d7e301f5e71209b8d1fd113735397ef3963..ee41968a5a4629e08dc66f1e8a9b04888ef903cd 100644
--- a/core/modules/system/tests/src/Functional/Theme/ThemeInfoTest.php
+++ b/core/modules/system/tests/src/Functional/Theme/ThemeInfoTest.php
@@ -53,7 +53,7 @@ protected function setUp() {
   /**
    * Tests stylesheets-remove.
    */
-  function testStylesheets() {
+  public function testStylesheets() {
     $this->themeHandler->install(['test_basetheme', 'test_subtheme']);
     $this->config('system.theme')
       ->set('default', 'test_subtheme')
diff --git a/core/modules/system/tests/src/Functional/Theme/TwigExtensionTest.php b/core/modules/system/tests/src/Functional/Theme/TwigExtensionTest.php
index f2491ac47aa93e7eea4dc4c0d0edbd2181610b53..5e3bc722e3de783fdb50897ccaf77e0a176d6aa9 100644
--- a/core/modules/system/tests/src/Functional/Theme/TwigExtensionTest.php
+++ b/core/modules/system/tests/src/Functional/Theme/TwigExtensionTest.php
@@ -26,7 +26,7 @@ protected function setUp() {
   /**
    * Tests that the provided Twig extension loads the service appropriately.
    */
-  function testTwigExtensionLoaded() {
+  public function testTwigExtensionLoaded() {
     $twigService = \Drupal::service('twig');
     $ext = $twigService->getExtension('twig_extension_test.test_extension');
     $this->assertEqual(get_class($ext), 'Drupal\twig_extension_test\TwigExtension\TestExtension', 'TestExtension loaded successfully.');
@@ -35,7 +35,7 @@ function testTwigExtensionLoaded() {
   /**
    * Tests that the Twig extension's filter produces expected output.
    */
-  function testTwigExtensionFilter() {
+  public function testTwigExtensionFilter() {
     $this->config('system.theme')
       ->set('default', 'test_theme')
       ->save();
@@ -49,7 +49,7 @@ function testTwigExtensionFilter() {
   /**
    * Tests that the Twig extension's function produces expected output.
    */
-  function testTwigExtensionFunction() {
+  public function testTwigExtensionFunction() {
     $this->config('system.theme')
       ->set('default', 'test_theme')
       ->save();
diff --git a/core/modules/system/tests/src/Functional/Theme/TwigSettingsTest.php b/core/modules/system/tests/src/Functional/Theme/TwigSettingsTest.php
index 58dcbc9af1b4885e2c71da3e6be31a03dba920d8..0ad88ce320bb0f5bb528bc5ef83eb093a1a02146 100644
--- a/core/modules/system/tests/src/Functional/Theme/TwigSettingsTest.php
+++ b/core/modules/system/tests/src/Functional/Theme/TwigSettingsTest.php
@@ -22,7 +22,7 @@ class TwigSettingsTest extends BrowserTestBase {
   /**
    * Ensures Twig template auto reload setting can be overridden.
    */
-  function testTwigAutoReloadOverride() {
+  public function testTwigAutoReloadOverride() {
     // Enable auto reload and rebuild the service container.
     $parameters = $this->container->getParameter('twig.config');
     $parameters['auto_reload'] = TRUE;
@@ -44,7 +44,7 @@ function testTwigAutoReloadOverride() {
   /**
    * Ensures Twig engine debug setting can be overridden.
    */
-  function testTwigDebugOverride() {
+  public function testTwigDebugOverride() {
     // Enable debug and rebuild the service container.
     $parameters = $this->container->getParameter('twig.config');
     $parameters['debug'] = TRUE;
@@ -74,7 +74,7 @@ function testTwigDebugOverride() {
   /**
    * Ensures Twig template cache setting can be overridden.
    */
-  function testTwigCacheOverride() {
+  public function testTwigCacheOverride() {
     $extension = twig_extension();
     $theme_handler = $this->container->get('theme_handler');
     $theme_handler->install(['test_theme']);
diff --git a/core/modules/system/tests/src/Kernel/Common/PageRenderTest.php b/core/modules/system/tests/src/Kernel/Common/PageRenderTest.php
index 80729448d78fc9b9e1eab57a910023ae4ec8dd51..fa16947344227a5be45165af1a151d53795f4943 100644
--- a/core/modules/system/tests/src/Kernel/Common/PageRenderTest.php
+++ b/core/modules/system/tests/src/Kernel/Common/PageRenderTest.php
@@ -14,7 +14,7 @@ class PageRenderTest extends KernelTestBase {
   /**
    * Tests hook_page_attachments() exceptions.
    */
-  function testHookPageAttachmentsExceptions() {
+  public function testHookPageAttachmentsExceptions() {
     $this->enableModules(['common_test', 'system']);
     \Drupal::service('router.builder')->rebuild();
 
@@ -24,7 +24,7 @@ function testHookPageAttachmentsExceptions() {
   /**
    * Tests hook_page_attachments_alter() exceptions.
    */
-  function testHookPageAlter() {
+  public function testHookPageAlter() {
     $this->enableModules(['common_test', 'system']);
     \Drupal::service('router.builder')->rebuild();
 
@@ -39,7 +39,7 @@ function testHookPageAlter() {
    * @param string $hook
    *   The page render hook to assert expected exceptions for.
    */
-  function assertPageRenderHookExceptions($module, $hook) {
+  public function assertPageRenderHookExceptions($module, $hook) {
     $html_renderer = \Drupal::getContainer()->get('main_content_renderer.html');
 
     // Assert a valid hook implementation doesn't trigger an exception.
diff --git a/core/modules/system/tests/src/Kernel/Common/SystemListingTest.php b/core/modules/system/tests/src/Kernel/Common/SystemListingTest.php
index fc30a1c504d7892e3b8bf0ed793d8621bf00c1db..b0412b4336fd20d6c4d0ea1f306561fe442e2a9c 100644
--- a/core/modules/system/tests/src/Kernel/Common/SystemListingTest.php
+++ b/core/modules/system/tests/src/Kernel/Common/SystemListingTest.php
@@ -14,7 +14,7 @@ class SystemListingTest extends KernelTestBase {
   /**
    * Tests that files in different directories take precedence as expected.
    */
-  function testDirectoryPrecedence() {
+  public function testDirectoryPrecedence() {
     // Define the module files we will search for, and the directory precedence
     // we expect.
     $expected_directories = [
diff --git a/core/modules/system/tests/src/Kernel/Extension/ModuleHandlerTest.php b/core/modules/system/tests/src/Kernel/Extension/ModuleHandlerTest.php
index 8ee66ee5c4af8c2cdf5de6868ae5c04d21995d66..22648a63912b7edb45685120e9f9216911311d3b 100644
--- a/core/modules/system/tests/src/Kernel/Extension/ModuleHandlerTest.php
+++ b/core/modules/system/tests/src/Kernel/Extension/ModuleHandlerTest.php
@@ -38,7 +38,7 @@ protected function setUp() {
   /**
    * The basic functionality of retrieving enabled modules.
    */
-  function testModuleList() {
+  public function testModuleList() {
     $module_list = ['system'];
 
     $this->assertModuleList($module_list, 'Initial');
@@ -92,7 +92,7 @@ protected function assertModuleList(array $expected_values, $condition) {
    * @see module_test_system_info_alter()
    * @see https://www.drupal.org/files/issues/dep.gv__0.png
    */
-  function testDependencyResolution() {
+  public function testDependencyResolution() {
     $this->enableModules(['module_test']);
     $this->assertTrue($this->moduleHandler()->moduleExists('module_test'), 'Test module is enabled.');
 
@@ -171,7 +171,7 @@ function testDependencyResolution() {
   /**
    * Tests uninstalling a module that is a "dependency" of a profile.
    */
-  function testUninstallProfileDependency() {
+  public function testUninstallProfileDependency() {
     $profile = 'minimal';
     $dependency = 'dblog';
     $this->setSetting('install_profile', $profile);
@@ -204,7 +204,7 @@ function testUninstallProfileDependency() {
   /**
    * Tests uninstalling a module that has content.
    */
-  function testUninstallContentDependency() {
+  public function testUninstallContentDependency() {
     $this->enableModules(['module_test', 'entity_test', 'text', 'user', 'help']);
     $this->assertTrue($this->moduleHandler()->moduleExists('entity_test'), 'Test module is enabled.');
     $this->assertTrue($this->moduleHandler()->moduleExists('module_test'), 'Test module is enabled.');
@@ -258,7 +258,7 @@ function testUninstallContentDependency() {
   /**
    * Tests whether the correct module metadata is returned.
    */
-  function testModuleMetaData() {
+  public function testModuleMetaData() {
     // Generate the list of available modules.
     $modules = system_rebuild_module_data();
     // Check that the mtime field exists for the system module.
@@ -289,7 +289,7 @@ public function testModuleStreamWrappers() {
   /**
    * Tests whether the correct theme metadata is returned.
    */
-  function testThemeMetaData() {
+  public function testThemeMetaData() {
     // Generate the list of available themes.
     $themes = \Drupal::service('theme_handler')->rebuildThemeData();
     // Check that the mtime field exists for the bartik theme.
diff --git a/core/modules/system/tests/src/Kernel/Render/ClassyTest.php b/core/modules/system/tests/src/Kernel/Render/ClassyTest.php
index 776cb2e672f26b3c0641af3f22d2cf4a0fa968e3..8dbb01e5d057706a12fb22165597e7df3fa8fdf3 100644
--- a/core/modules/system/tests/src/Kernel/Render/ClassyTest.php
+++ b/core/modules/system/tests/src/Kernel/Render/ClassyTest.php
@@ -36,7 +36,7 @@ public function setUp() {
   /**
    * Test the classy theme.
    */
-  function testClassyTheme() {
+  public function testClassyTheme() {
     drupal_set_message('An error occurred', 'error');
     drupal_set_message('But then something nice happened');
     $messages = [
diff --git a/core/modules/system/tests/src/Kernel/System/InfoAlterTest.php b/core/modules/system/tests/src/Kernel/System/InfoAlterTest.php
index f8963273a610511a4ed563e97438b6463631e00d..ebdac3ce0dbf75ce2b97b600ca52d15046a77fe8 100644
--- a/core/modules/system/tests/src/Kernel/System/InfoAlterTest.php
+++ b/core/modules/system/tests/src/Kernel/System/InfoAlterTest.php
@@ -20,7 +20,7 @@ class InfoAlterTest extends KernelTestBase {
    * hook_system_info_alter() is enabled. Also tests if core *_list() functions
    * return freshly altered info.
    */
-  function testSystemInfoAlter() {
+  public function testSystemInfoAlter() {
     \Drupal::state()->set('module_required_test.hook_system_info_alter', TRUE);
     $info = system_rebuild_module_data();
     $this->assertFalse(isset($info['node']->info['required']), 'Before the module_required_test is installed the node module is not required.');
diff --git a/core/modules/taxonomy/src/Plugin/views/argument/IndexTidDepth.php b/core/modules/taxonomy/src/Plugin/views/argument/IndexTidDepth.php
index a41b8012362ea74f1c3f68be3e516bd027e8ad03..37abdd565e7e109c261e285cdffc92924d1ee40c 100644
--- a/core/modules/taxonomy/src/Plugin/views/argument/IndexTidDepth.php
+++ b/core/modules/taxonomy/src/Plugin/views/argument/IndexTidDepth.php
@@ -131,7 +131,7 @@ public function query($group_by = FALSE) {
     $this->query->addWhere(0, "$this->tableAlias.$this->realField", $subquery, 'IN');
   }
 
-  function title() {
+  public function title() {
     $term = $this->termStorage->load($this->argument);
     if (!empty($term)) {
       return $term->getName();
diff --git a/core/modules/taxonomy/src/Plugin/views/argument/Taxonomy.php b/core/modules/taxonomy/src/Plugin/views/argument/Taxonomy.php
index 38e64c732d9ff3213ac78b9b49053edd07e2e8bb..25efbf35cc7307ee276abfaa3163b3612f7fd8d8 100644
--- a/core/modules/taxonomy/src/Plugin/views/argument/Taxonomy.php
+++ b/core/modules/taxonomy/src/Plugin/views/argument/Taxonomy.php
@@ -45,7 +45,7 @@ public static function create(ContainerInterface $container, array $configuratio
   /**
    * Override the behavior of title(). Get the title of the node.
    */
-  function title() {
+  public function title() {
     // There might be no valid argument.
     if ($this->argument) {
       $term = $this->termStorage->load($this->argument);
diff --git a/core/modules/taxonomy/src/Plugin/views/argument/VocabularyVid.php b/core/modules/taxonomy/src/Plugin/views/argument/VocabularyVid.php
index 9432c7c7346c3a7c42f4c28c5dc97f17938abd78..d2fe82072d472cb7b6fdacd02197610e19d3ce8a 100644
--- a/core/modules/taxonomy/src/Plugin/views/argument/VocabularyVid.php
+++ b/core/modules/taxonomy/src/Plugin/views/argument/VocabularyVid.php
@@ -54,7 +54,7 @@ public static function create(ContainerInterface $container, array $configuratio
   /**
    * Override the behavior of title(). Get the name of the vocabulary.
    */
-  function title() {
+  public function title() {
     $vocabulary = $this->vocabularyStorage->load($this->argument);
     if ($vocabulary) {
       return $vocabulary->label();
diff --git a/core/modules/taxonomy/src/Plugin/views/field/TaxonomyIndexTid.php b/core/modules/taxonomy/src/Plugin/views/field/TaxonomyIndexTid.php
index 1bab4461844337fc4d588b162caafecd1eb7f1e2..367565c38757ff4cc8b2525f09aa0224cd92ef66 100644
--- a/core/modules/taxonomy/src/Plugin/views/field/TaxonomyIndexTid.php
+++ b/core/modules/taxonomy/src/Plugin/views/field/TaxonomyIndexTid.php
@@ -157,7 +157,7 @@ public function preRender(&$values) {
     }
   }
 
-  function render_item($count, $item) {
+  public function render_item($count, $item) {
     return $item['name'];
   }
 
diff --git a/core/modules/taxonomy/src/TermTranslationHandler.php b/core/modules/taxonomy/src/TermTranslationHandler.php
index 8339267c4173018a301cd4b0dd1b7281ef7f8e95..688c63e38bdd9f65ab5dfc40a5c082038447030e 100644
--- a/core/modules/taxonomy/src/TermTranslationHandler.php
+++ b/core/modules/taxonomy/src/TermTranslationHandler.php
@@ -26,7 +26,7 @@ public function entityFormAlter(array &$form, FormStateInterface $form_state, En
    *
    * @see \Drupal\Core\Entity\EntityForm::build()
    */
-  function entityFormSave(array $form, FormStateInterface $form_state) {
+  public function entityFormSave(array $form, FormStateInterface $form_state) {
     if ($this->getSourceLangcode($form_state)) {
       $entity = $form_state->getFormObject()->getEntity();
       // We need a redirect here, otherwise we would get an access denied page,
diff --git a/core/modules/taxonomy/src/Tests/RssTest.php b/core/modules/taxonomy/src/Tests/RssTest.php
index 315f64d5df0b0a8e2c492a625af91a37b2ff9931..81a397d69d7dcf1bb773467953eb88fa3f155aaf 100644
--- a/core/modules/taxonomy/src/Tests/RssTest.php
+++ b/core/modules/taxonomy/src/Tests/RssTest.php
@@ -66,7 +66,7 @@ protected function setUp() {
    *
    * Create a node and assert that taxonomy terms appear in rss.xml.
    */
-  function testTaxonomyRss() {
+  public function testTaxonomyRss() {
     // Create two taxonomy terms.
     $term1 = $this->createTerm($this->vocabulary);
 
diff --git a/core/modules/taxonomy/src/Tests/TaxonomyTermIndentationTest.php b/core/modules/taxonomy/src/Tests/TaxonomyTermIndentationTest.php
index b48de1a7adfabdd3118813109af45b920348d359..fbf8515ea777a06a851f01474f1f43887e92062f 100644
--- a/core/modules/taxonomy/src/Tests/TaxonomyTermIndentationTest.php
+++ b/core/modules/taxonomy/src/Tests/TaxonomyTermIndentationTest.php
@@ -32,7 +32,7 @@ protected function setUp() {
   /**
    * Tests term indentation.
    */
-  function testTermIndentation() {
+  public function testTermIndentation() {
     // Create three taxonomy terms.
     $term1 = $this->createTerm($this->vocabulary);
     $term2 = $this->createTerm($this->vocabulary);
diff --git a/core/modules/taxonomy/src/Tests/TaxonomyTestTrait.php b/core/modules/taxonomy/src/Tests/TaxonomyTestTrait.php
index dae42f3fe9dc71a5cd05c0cc9b9b5f2802f81f35..744ab1b28b497c5a8feb6ff9cb0b65ce912370fb 100644
--- a/core/modules/taxonomy/src/Tests/TaxonomyTestTrait.php
+++ b/core/modules/taxonomy/src/Tests/TaxonomyTestTrait.php
@@ -15,7 +15,7 @@ trait TaxonomyTestTrait {
   /**
    * Returns a new vocabulary with random properties.
    */
-  function createVocabulary() {
+  public function createVocabulary() {
     // Create a vocabulary.
     $vocabulary = Vocabulary::create([
       'name' => $this->randomMachineName(),
@@ -40,7 +40,7 @@ function createVocabulary() {
    * @return \Drupal\taxonomy\Entity\Term
    *   The new taxonomy term object.
    */
-  function createTerm(Vocabulary $vocabulary, $values = []) {
+  public function createTerm(Vocabulary $vocabulary, $values = []) {
     $filter_formats = filter_formats();
     $format = array_pop($filter_formats);
     $term = Term::create($values + [
diff --git a/core/modules/taxonomy/src/Tests/TermTest.php b/core/modules/taxonomy/src/Tests/TermTest.php
index cba983ddcdfa04bf727b7dbb1f44d4b329a9ad9a..42f92b1b4b432c751a3c3a586e102e5eb51acb4f 100644
--- a/core/modules/taxonomy/src/Tests/TermTest.php
+++ b/core/modules/taxonomy/src/Tests/TermTest.php
@@ -76,7 +76,7 @@ protected function setUp() {
   /**
    * Test terms in a single and multiple hierarchy.
    */
-  function testTaxonomyTermHierarchy() {
+  public function testTaxonomyTermHierarchy() {
     // Create two taxonomy terms.
     $term1 = $this->createTerm($this->vocabulary);
     $term2 = $this->createTerm($this->vocabulary);
@@ -116,7 +116,7 @@ function testTaxonomyTermHierarchy() {
   /**
    * Tests that many terms with parents show on each page
    */
-  function testTaxonomyTermChildTerms() {
+  public function testTaxonomyTermChildTerms() {
     // Set limit to 10 terms per page. Set variable to 9 so 10 terms appear.
     $this->config('taxonomy.settings')->set('terms_per_page_admin', '9')->save();
     $term1 = $this->createTerm($this->vocabulary);
@@ -171,7 +171,7 @@ function testTaxonomyTermChildTerms() {
    *
    * Save & edit a node and assert that taxonomy terms are saved/loaded properly.
    */
-  function testTaxonomyNode() {
+  public function testTaxonomyNode() {
     // Create two taxonomy terms.
     $term1 = $this->createTerm($this->vocabulary);
     $term2 = $this->createTerm($this->vocabulary);
@@ -210,7 +210,7 @@ function testTaxonomyNode() {
   /**
    * Test term creation with a free-tagging vocabulary from the node form.
    */
-  function testNodeTermCreationAndDeletion() {
+  public function testNodeTermCreationAndDeletion() {
     // Enable tags in the vocabulary.
     $field = $this->field;
     entity_get_form_display($field->getTargetEntityTypeId(), $field->getTargetBundle(), 'default')
@@ -303,7 +303,7 @@ function testNodeTermCreationAndDeletion() {
   /**
    * Save, edit and delete a term using the user interface.
    */
-  function testTermInterface() {
+  public function testTermInterface() {
     \Drupal::service('module_installer')->install(['views']);
     $edit = [
       'name[0][value]' => $this->randomMachineName(12),
@@ -380,7 +380,7 @@ function testTermInterface() {
   /**
    * Save, edit and delete a term using the user interface.
    */
-  function testTermReorder() {
+  public function testTermReorder() {
     $this->createTerm($this->vocabulary);
     $this->createTerm($this->vocabulary);
     $this->createTerm($this->vocabulary);
@@ -437,7 +437,7 @@ function testTermReorder() {
   /**
    * Test saving a term with multiple parents through the UI.
    */
-  function testTermMultipleParentsInterface() {
+  public function testTermMultipleParentsInterface() {
     // Add a new term to the vocabulary so that we can have multiple parents.
     $parent = $this->createTerm($this->vocabulary);
 
@@ -466,7 +466,7 @@ function testTermMultipleParentsInterface() {
   /**
    * Test taxonomy_term_load_multiple_by_name().
    */
-  function testTaxonomyGetTermByName() {
+  public function testTaxonomyGetTermByName() {
     $term = $this->createTerm($this->vocabulary);
 
     // Load the term with the exact name.
@@ -526,7 +526,7 @@ function testTaxonomyGetTermByName() {
   /**
    * Tests that editing and saving a node with no changes works correctly.
    */
-  function testReSavingTags() {
+  public function testReSavingTags() {
     // Enable tags in the vocabulary.
     $field = $this->field;
     entity_get_form_display($field->getTargetEntityTypeId(), $field->getTargetBundle(), 'default')
diff --git a/core/modules/taxonomy/src/Tests/TermTranslationUITest.php b/core/modules/taxonomy/src/Tests/TermTranslationUITest.php
index 5e82ffc4fded30f99a844c8ce5cd42ddac8506eb..43edc156bb4a064ba393d3e650a13f93dd9e4070 100644
--- a/core/modules/taxonomy/src/Tests/TermTranslationUITest.php
+++ b/core/modules/taxonomy/src/Tests/TermTranslationUITest.php
@@ -100,7 +100,7 @@ public function testTranslationUI() {
   /**
    * Tests translate link on vocabulary term list.
    */
-  function testTranslateLinkVocabularyAdminPage() {
+  public function testTranslateLinkVocabularyAdminPage() {
     $this->drupalLogin($this->drupalCreateUser(array_merge(parent::getTranslatorPermissions(), ['access administration pages', 'administer taxonomy'])));
 
     $values = [
diff --git a/core/modules/taxonomy/src/Tests/ThemeTest.php b/core/modules/taxonomy/src/Tests/ThemeTest.php
index fc7f2cfcdc2f87564500780034d3edae54bfa78a..8995c809a65c4de6709deb6e4c3991e838a4327f 100644
--- a/core/modules/taxonomy/src/Tests/ThemeTest.php
+++ b/core/modules/taxonomy/src/Tests/ThemeTest.php
@@ -29,7 +29,7 @@ protected function setUp() {
   /**
    * Test the theme used when adding, viewing and editing taxonomy terms.
    */
-  function testTaxonomyTermThemes() {
+  public function testTaxonomyTermThemes() {
     // Adding a term to a vocabulary is considered an administrative action and
     // should use the administrative theme.
     $vocabulary = $this->createVocabulary();
diff --git a/core/modules/taxonomy/src/Tests/Views/RelationshipNodeTermDataTest.php b/core/modules/taxonomy/src/Tests/Views/RelationshipNodeTermDataTest.php
index e76d81580f34971515949098a8a041ca596354e2..4f0cb485925658752686332573182a41ab0cf6d0 100644
--- a/core/modules/taxonomy/src/Tests/Views/RelationshipNodeTermDataTest.php
+++ b/core/modules/taxonomy/src/Tests/Views/RelationshipNodeTermDataTest.php
@@ -18,7 +18,7 @@ class RelationshipNodeTermDataTest extends TaxonomyTestBase {
    */
   public static $testViews = ['test_taxonomy_node_term_data'];
 
-  function testViewsHandlerRelationshipNodeTermData() {
+  public function testViewsHandlerRelationshipNodeTermData() {
     $view = Views::getView('test_taxonomy_node_term_data');
     // Tests \Drupal\taxonomy\Plugin\views\relationship\NodeTermData::calculateDependencies().
     $expected = [
diff --git a/core/modules/taxonomy/src/Tests/Views/TaxonomyFieldFilterTest.php b/core/modules/taxonomy/src/Tests/Views/TaxonomyFieldFilterTest.php
index 2e9602d892bf8d5e0abc36653a0ab819a222653b..86f67ff3de89f14af915405f05d597a90474ecc0 100644
--- a/core/modules/taxonomy/src/Tests/Views/TaxonomyFieldFilterTest.php
+++ b/core/modules/taxonomy/src/Tests/Views/TaxonomyFieldFilterTest.php
@@ -45,7 +45,7 @@ class TaxonomyFieldFilterTest extends ViewTestBase {
    */
   public $termNames = [];
 
-  function setUp() {
+  public function setUp() {
     parent::setUp();
 
     // Add two new languages.
diff --git a/core/modules/taxonomy/src/Tests/Views/TaxonomyFieldTidTest.php b/core/modules/taxonomy/src/Tests/Views/TaxonomyFieldTidTest.php
index 51489ac7951f75a600f0f96db1e56ebd50580cf9..b068f083a1f676c1a4d5944514b6f4b436a30210 100644
--- a/core/modules/taxonomy/src/Tests/Views/TaxonomyFieldTidTest.php
+++ b/core/modules/taxonomy/src/Tests/Views/TaxonomyFieldTidTest.php
@@ -19,7 +19,7 @@ class TaxonomyFieldTidTest extends TaxonomyTestBase {
    */
   public static $testViews = ['test_taxonomy_tid_field'];
 
-  function testViewsHandlerTidField() {
+  public function testViewsHandlerTidField() {
     /** @var \Drupal\Core\Render\RendererInterface $renderer */
     $renderer = \Drupal::service('renderer');
 
diff --git a/core/modules/taxonomy/src/Tests/VocabularyUiTest.php b/core/modules/taxonomy/src/Tests/VocabularyUiTest.php
index e3710d610b24b3c44bd09e4a80619bc4a92baffb..89c7a67f55478a70588cb673e6c8ab49c0754468 100644
--- a/core/modules/taxonomy/src/Tests/VocabularyUiTest.php
+++ b/core/modules/taxonomy/src/Tests/VocabularyUiTest.php
@@ -31,7 +31,7 @@ protected function setUp() {
   /**
    * Create, edit and delete a vocabulary via the user interface.
    */
-  function testVocabularyInterface() {
+  public function testVocabularyInterface() {
     // Visit the main taxonomy administration page.
     $this->drupalGet('admin/structure/taxonomy');
 
@@ -84,7 +84,7 @@ function testVocabularyInterface() {
   /**
    * Changing weights on the vocabulary overview with two or more vocabularies.
    */
-  function testTaxonomyAdminChangingWeights() {
+  public function testTaxonomyAdminChangingWeights() {
     // Create some vocabularies.
     for ($i = 0; $i < 10; $i++) {
       $this->createVocabulary();
@@ -113,7 +113,7 @@ function testTaxonomyAdminChangingWeights() {
   /**
    * Test the vocabulary overview with no vocabularies.
    */
-  function testTaxonomyAdminNoVocabularies() {
+  public function testTaxonomyAdminNoVocabularies() {
     // Delete all vocabularies.
     $vocabularies = Vocabulary::loadMultiple();
     foreach ($vocabularies as $key => $vocabulary) {
@@ -129,7 +129,7 @@ function testTaxonomyAdminNoVocabularies() {
   /**
    * Deleting a vocabulary.
    */
-  function testTaxonomyAdminDeletingVocabulary() {
+  public function testTaxonomyAdminDeletingVocabulary() {
     // Create a vocabulary.
     $vid = Unicode::strtolower($this->randomMachineName());
     $edit = [
diff --git a/core/modules/taxonomy/tests/src/Functional/EfqTest.php b/core/modules/taxonomy/tests/src/Functional/EfqTest.php
index 945c0b1085cd8955e74d7ee8d83c56ca0dcc0478..e78d9ec9b1a76ac439c754d092bfce6736803ef3 100644
--- a/core/modules/taxonomy/tests/src/Functional/EfqTest.php
+++ b/core/modules/taxonomy/tests/src/Functional/EfqTest.php
@@ -25,7 +25,7 @@ protected function setUp() {
   /**
    * Tests that a basic taxonomy entity query works.
    */
-  function testTaxonomyEfq() {
+  public function testTaxonomyEfq() {
     $terms = [];
     for ($i = 0; $i < 5; $i++) {
       $term = $this->createTerm($this->vocabulary);
diff --git a/core/modules/taxonomy/tests/src/Functional/LegacyTest.php b/core/modules/taxonomy/tests/src/Functional/LegacyTest.php
index f3b0a74e090b85fbe5ad7d94f0c92f312d758562..289471533bfa1c8a9be0a1a0b3b7b4923318df54 100644
--- a/core/modules/taxonomy/tests/src/Functional/LegacyTest.php
+++ b/core/modules/taxonomy/tests/src/Functional/LegacyTest.php
@@ -51,7 +51,7 @@ protected function setUp() {
   /**
    * Test taxonomy functionality with nodes prior to 1970.
    */
-  function testTaxonomyLegacyNode() {
+  public function testTaxonomyLegacyNode() {
     // Posts an article with a taxonomy term and a date prior to 1970.
     $date = new DrupalDateTime('1969-01-01 00:00:00');
     $edit = [];
diff --git a/core/modules/taxonomy/tests/src/Functional/LoadMultipleTest.php b/core/modules/taxonomy/tests/src/Functional/LoadMultipleTest.php
index ce41b2ffc926c9ed904835f12f3049404e873ed0..186031cceb8fa06cfc3453c3022c91188e6b4286 100644
--- a/core/modules/taxonomy/tests/src/Functional/LoadMultipleTest.php
+++ b/core/modules/taxonomy/tests/src/Functional/LoadMultipleTest.php
@@ -20,7 +20,7 @@ protected function setUp() {
    * Create a vocabulary and some taxonomy terms, ensuring they're loaded
    * correctly using entity_load_multiple().
    */
-  function testTaxonomyTermMultipleLoad() {
+  public function testTaxonomyTermMultipleLoad() {
     // Create a vocabulary.
     $vocabulary = $this->createVocabulary();
 
diff --git a/core/modules/taxonomy/tests/src/Functional/TermEntityReferenceTest.php b/core/modules/taxonomy/tests/src/Functional/TermEntityReferenceTest.php
index 2deeb417860d2374206b63a617f6cfa750f770e4..9d4522ec71edee1833880b562ed779053ca5b718 100644
--- a/core/modules/taxonomy/tests/src/Functional/TermEntityReferenceTest.php
+++ b/core/modules/taxonomy/tests/src/Functional/TermEntityReferenceTest.php
@@ -26,7 +26,7 @@ class TermEntityReferenceTest extends TaxonomyTestBase {
    * field to limit the target vocabulary to one of them, ensuring that
    * the restriction applies.
    */
-  function testSelectionTestVocabularyRestriction() {
+  public function testSelectionTestVocabularyRestriction() {
 
     // Create two vocabularies.
     $vocabulary = $this->createVocabulary();
diff --git a/core/modules/taxonomy/tests/src/Functional/TermIndexTest.php b/core/modules/taxonomy/tests/src/Functional/TermIndexTest.php
index 5266b8ff55e45b447146afd95761d1ab3f34684f..d4fe8f225b6fbd5b7cc9db8b010aa4d0bdb0c7a4 100644
--- a/core/modules/taxonomy/tests/src/Functional/TermIndexTest.php
+++ b/core/modules/taxonomy/tests/src/Functional/TermIndexTest.php
@@ -87,7 +87,7 @@ protected function setUp() {
   /**
    * Tests that the taxonomy index is maintained properly.
    */
-  function testTaxonomyIndex() {
+  public function testTaxonomyIndex() {
     $node_storage = $this->container->get('entity.manager')->getStorage('node');
     // Create terms in the vocabulary.
     $term_1 = $this->createTerm($this->vocabulary);
@@ -197,7 +197,7 @@ function testTaxonomyIndex() {
   /**
    * Tests that there is a link to the parent term on the child term page.
    */
-  function testTaxonomyTermHierarchyBreadcrumbs() {
+  public function testTaxonomyTermHierarchyBreadcrumbs() {
     // Create two taxonomy terms and set term2 as the parent of term1.
     $term1 = $this->createTerm($this->vocabulary);
     $term2 = $this->createTerm($this->vocabulary);
diff --git a/core/modules/taxonomy/tests/src/Functional/TermLanguageTest.php b/core/modules/taxonomy/tests/src/Functional/TermLanguageTest.php
index ce87396fc6404ff4b6b3a3df541605449f8242bc..fb000e99c6a96cde12b71c7f1515b29ea2c9a57a 100644
--- a/core/modules/taxonomy/tests/src/Functional/TermLanguageTest.php
+++ b/core/modules/taxonomy/tests/src/Functional/TermLanguageTest.php
@@ -39,7 +39,7 @@ protected function setUp() {
     }
   }
 
-  function testTermLanguage() {
+  public function testTermLanguage() {
     // Configure the vocabulary to not hide the language selector.
     $edit = [
       'default_language[language_alterable]' => TRUE,
@@ -73,7 +73,7 @@ function testTermLanguage() {
     $this->assertOptionSelected('edit-langcode-0-value', $edit['langcode[0][value]'], 'The term language was correctly selected.');
   }
 
-  function testDefaultTermLanguage() {
+  public function testDefaultTermLanguage() {
     // Configure the vocabulary to not hide the language selector, and make the
     // default language of the terms fixed.
     $edit = [
diff --git a/core/modules/taxonomy/tests/src/Functional/TokenReplaceTest.php b/core/modules/taxonomy/tests/src/Functional/TokenReplaceTest.php
index e6836f68049b99c6a4d9bdb6148bc2d1f0b3235c..958da3bebaaed02a662071844f171751c0466ac7 100644
--- a/core/modules/taxonomy/tests/src/Functional/TokenReplaceTest.php
+++ b/core/modules/taxonomy/tests/src/Functional/TokenReplaceTest.php
@@ -56,7 +56,7 @@ protected function setUp() {
   /**
    * Creates some terms and a node, then tests the tokens generated from them.
    */
-  function testTaxonomyTokenReplacement() {
+  public function testTaxonomyTokenReplacement() {
     $token_service = \Drupal::token();
     $language_interface = \Drupal::languageManager()->getCurrentLanguage();
 
diff --git a/core/modules/taxonomy/tests/src/Functional/VocabularyCrudTest.php b/core/modules/taxonomy/tests/src/Functional/VocabularyCrudTest.php
index d32fb0fd0539ade41fd0f71831cb07faa73c36c6..2ac2d9de61245fc6a700bb102fd736c8984614be 100644
--- a/core/modules/taxonomy/tests/src/Functional/VocabularyCrudTest.php
+++ b/core/modules/taxonomy/tests/src/Functional/VocabularyCrudTest.php
@@ -32,7 +32,7 @@ protected function setUp() {
   /**
    * Test deleting a taxonomy that contains terms.
    */
-  function testTaxonomyVocabularyDeleteWithTerms() {
+  public function testTaxonomyVocabularyDeleteWithTerms() {
     // Delete any existing vocabularies.
     foreach (Vocabulary::loadMultiple() as $vocabulary) {
       $vocabulary->delete();
@@ -65,7 +65,7 @@ function testTaxonomyVocabularyDeleteWithTerms() {
   /**
    * Ensure that the vocabulary static reset works correctly.
    */
-  function testTaxonomyVocabularyLoadStaticReset() {
+  public function testTaxonomyVocabularyLoadStaticReset() {
     $original_vocabulary = Vocabulary::load($this->vocabulary->id());
     $this->assertTrue(is_object($original_vocabulary), 'Vocabulary loaded successfully.');
     $this->assertEqual($this->vocabulary->label(), $original_vocabulary->label(), 'Vocabulary loaded successfully.');
@@ -89,7 +89,7 @@ function testTaxonomyVocabularyLoadStaticReset() {
   /**
    * Tests for loading multiple vocabularies.
    */
-  function testTaxonomyVocabularyLoadMultiple() {
+  public function testTaxonomyVocabularyLoadMultiple() {
 
     // Delete any existing vocabularies.
     foreach (Vocabulary::loadMultiple() as $vocabulary) {
@@ -141,7 +141,7 @@ function testTaxonomyVocabularyLoadMultiple() {
   /**
    * Test uninstall and reinstall of the taxonomy module.
    */
-  function testUninstallReinstall() {
+  public function testUninstallReinstall() {
     // Field storages and fields attached to taxonomy term bundles should be
     // removed when the module is uninstalled.
     $field_name = Unicode::strtolower($this->randomMachineName() . '_field_name');
diff --git a/core/modules/taxonomy/tests/src/Functional/VocabularyLanguageTest.php b/core/modules/taxonomy/tests/src/Functional/VocabularyLanguageTest.php
index 5b9cbfe8f627a58beb455bfad129091eb813f81c..f25df8a1fdcffcab27b83bc56fa762e241fc3758 100644
--- a/core/modules/taxonomy/tests/src/Functional/VocabularyLanguageTest.php
+++ b/core/modules/taxonomy/tests/src/Functional/VocabularyLanguageTest.php
@@ -36,7 +36,7 @@ protected function setUp() {
   /**
    * Tests language settings for vocabularies.
    */
-  function testVocabularyLanguage() {
+  public function testVocabularyLanguage() {
     $this->drupalGet('admin/structure/taxonomy/add');
 
     // Check that we have the language selector available.
@@ -67,7 +67,7 @@ function testVocabularyLanguage() {
   /**
    * Tests term language settings for vocabulary terms are saved and updated.
    */
-  function testVocabularyDefaultLanguageForTerms() {
+  public function testVocabularyDefaultLanguageForTerms() {
     // Add a new vocabulary and check that the default language settings are for
     // the terms are saved.
     $edit = [
diff --git a/core/modules/taxonomy/tests/src/Functional/VocabularyPermissionsTest.php b/core/modules/taxonomy/tests/src/Functional/VocabularyPermissionsTest.php
index c5f1f94b4813d0c54bbca64330cda3e74a8cc326..3ba8868f5449d50f10244508a903745d3396945c 100644
--- a/core/modules/taxonomy/tests/src/Functional/VocabularyPermissionsTest.php
+++ b/core/modules/taxonomy/tests/src/Functional/VocabularyPermissionsTest.php
@@ -18,7 +18,7 @@ protected function setUp() {
   /**
    * Create, edit and delete a taxonomy term via the user interface.
    */
-  function testVocabularyPermissionsTaxonomyTerm() {
+  public function testVocabularyPermissionsTaxonomyTerm() {
     // Vocabulary used for creating, removing and editing terms.
     $vocabulary = $this->createVocabulary();
 
diff --git a/core/modules/taxonomy/tests/src/Functional/VocabularyTranslationTest.php b/core/modules/taxonomy/tests/src/Functional/VocabularyTranslationTest.php
index 3679b79db2b4b8dfe2abb205fd03841b25d4e781..2d312578e75504c1405e8411df8bd7a0c4f79e69 100644
--- a/core/modules/taxonomy/tests/src/Functional/VocabularyTranslationTest.php
+++ b/core/modules/taxonomy/tests/src/Functional/VocabularyTranslationTest.php
@@ -32,7 +32,7 @@ protected function setUp() {
   /**
    * Tests language settings for vocabularies.
    */
-  function testVocabularyLanguage() {
+  public function testVocabularyLanguage() {
     $this->drupalGet('admin/structure/taxonomy/add');
 
     // Check that the field to enable content translation is available.
diff --git a/core/modules/telephone/tests/src/Functional/TelephoneFieldTest.php b/core/modules/telephone/tests/src/Functional/TelephoneFieldTest.php
index 7256c9da39c9d1cc7fad0fb77734bd162ae640ee..18bedf0725ebeef363a0e4d65b3de06a3875bd9f 100644
--- a/core/modules/telephone/tests/src/Functional/TelephoneFieldTest.php
+++ b/core/modules/telephone/tests/src/Functional/TelephoneFieldTest.php
@@ -44,7 +44,7 @@ protected function setUp() {
   /**
    * Helper function for testTelephoneField().
    */
-  function testTelephoneField() {
+  public function testTelephoneField() {
 
     // Add the telephone field to the article content type.
     FieldStorageConfig::create([
diff --git a/core/modules/text/src/Plugin/Field/FieldWidget/TextareaWithSummaryWidget.php b/core/modules/text/src/Plugin/Field/FieldWidget/TextareaWithSummaryWidget.php
index e50e5cb232b445bc089cab5356eb613858e70d22..f41e5b1e62ad3f8a20ddbc2e553a25cde8eef004 100644
--- a/core/modules/text/src/Plugin/Field/FieldWidget/TextareaWithSummaryWidget.php
+++ b/core/modules/text/src/Plugin/Field/FieldWidget/TextareaWithSummaryWidget.php
@@ -60,7 +60,7 @@ public function settingsSummary() {
   /**
    * {@inheritdoc}
    */
-  function formElement(FieldItemListInterface $items, $delta, array $element, array &$form, FormStateInterface $form_state) {
+  public function formElement(FieldItemListInterface $items, $delta, array $element, array &$form, FormStateInterface $form_state) {
     $element = parent::formElement($items, $delta, $element, $form, $form_state);
 
     $display_summary = $items[$delta]->summary || $this->getFieldSetting('display_summary');
diff --git a/core/modules/text/src/Tests/TextFieldTest.php b/core/modules/text/src/Tests/TextFieldTest.php
index 5bd6d6f0257b0f06c5f412dfaeea81cd9438158f..d061c00f1ebced89f2874ae7accebc9ae5e9fe08 100644
--- a/core/modules/text/src/Tests/TextFieldTest.php
+++ b/core/modules/text/src/Tests/TextFieldTest.php
@@ -34,7 +34,7 @@ protected function setUp() {
   /**
    * Test text field validation.
    */
-  function testTextFieldValidation() {
+  public function testTextFieldValidation() {
     // Create a field with settings to validate.
     $max_length = 3;
     $field_name = Unicode::strtolower($this->randomMachineName());
@@ -69,7 +69,7 @@ function testTextFieldValidation() {
   /**
    * Test required long text with file upload.
    */
-  function testRequiredLongTextWithFileUpload() {
+  public function testRequiredLongTextWithFileUpload() {
     // Create a text field.
     $text_field_name = 'text_long';
     $field_storage = FieldStorageConfig::create([
@@ -128,7 +128,7 @@ function testRequiredLongTextWithFileUpload() {
   /**
    * Test widgets.
    */
-  function testTextfieldWidgets() {
+  public function testTextfieldWidgets() {
     $this->_testTextfieldWidgets('text', 'text_textfield');
     $this->_testTextfieldWidgets('text_long', 'text_textarea');
   }
@@ -136,7 +136,7 @@ function testTextfieldWidgets() {
   /**
    * Test widgets + 'formatted_text' setting.
    */
-  function testTextfieldWidgetsFormatted() {
+  public function testTextfieldWidgetsFormatted() {
     $this->_testTextfieldWidgetsFormatted('text', 'text_textfield');
     $this->_testTextfieldWidgetsFormatted('text_long', 'text_textarea');
   }
@@ -144,7 +144,7 @@ function testTextfieldWidgetsFormatted() {
   /**
    * Helper function for testTextfieldWidgetsFormatted().
    */
-  function _testTextfieldWidgetsFormatted($field_type, $widget_type) {
+  public function _testTextfieldWidgetsFormatted($field_type, $widget_type) {
     /** @var \Drupal\Core\Render\RendererInterface $renderer */
     $renderer = $this->container->get('renderer');
 
diff --git a/core/modules/text/tests/src/Kernel/TextSummaryTest.php b/core/modules/text/tests/src/Kernel/TextSummaryTest.php
index 62464e3dc5a9c00cdc195e090871ada70afd9d61..15d4549472b30cf5eceabb47fc3b1cb8e8f40965 100644
--- a/core/modules/text/tests/src/Kernel/TextSummaryTest.php
+++ b/core/modules/text/tests/src/Kernel/TextSummaryTest.php
@@ -25,7 +25,7 @@ protected function setUp() {
    * subsequent sentences are not. This edge case is documented at
    * https://www.drupal.org/node/180425.
    */
-  function testFirstSentenceQuestion() {
+  public function testFirstSentenceQuestion() {
     $text = 'A question? A sentence. Another sentence.';
     $expected = 'A question? A sentence.';
     $this->assertTextSummary($text, $expected, NULL, 30);
@@ -34,7 +34,7 @@ function testFirstSentenceQuestion() {
   /**
    * Test summary with long example.
    */
-  function testLongSentence() {
+  public function testLongSentence() {
     $text = 'Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. ' . // 125
             'Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. ' . // 108
             'Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. ' . // 103
@@ -49,7 +49,7 @@ function testLongSentence() {
   /**
    * Test various summary length edge cases.
    */
-  function testLength() {
+  public function testLength() {
     FilterFormat::create([
       'format' => 'autop',
       'filters' => [
@@ -205,7 +205,7 @@ function testLength() {
   /**
    * Calls text_summary() and asserts that the expected teaser is returned.
    */
-  function assertTextSummary($text, $expected, $format = NULL, $size = NULL) {
+  public function assertTextSummary($text, $expected, $format = NULL, $size = NULL) {
     $summary = text_summary($text, $format, $size);
     $this->assertIdentical($summary, $expected, format_string('<pre style="white-space: pre-wrap">@actual</pre> is identical to <pre style="white-space: pre-wrap">@expected</pre>', [
       '@actual' => $summary,
diff --git a/core/modules/toolbar/src/Tests/ToolbarAdminMenuTest.php b/core/modules/toolbar/src/Tests/ToolbarAdminMenuTest.php
index b5435dc3c735a3b439d7d5c5fa3f4e3a0c35dfff..dd4b5c43cfafa15cb501383eb5696f23de1f4ae1 100644
--- a/core/modules/toolbar/src/Tests/ToolbarAdminMenuTest.php
+++ b/core/modules/toolbar/src/Tests/ToolbarAdminMenuTest.php
@@ -97,7 +97,7 @@ protected function setUp() {
    * Tests the toolbar_modules_installed() and toolbar_modules_uninstalled() hook
    * implementations.
    */
-  function testModuleStatusChangeSubtreesHashCacheClear() {
+  public function testModuleStatusChangeSubtreesHashCacheClear() {
     // Uninstall a module.
     $edit = [];
     $edit['uninstall[taxonomy]'] = TRUE;
@@ -124,7 +124,7 @@ function testModuleStatusChangeSubtreesHashCacheClear() {
   /**
    * Tests toolbar cache tags implementation.
    */
-  function testMenuLinkUpdateSubtreesHashCacheClear() {
+  public function testMenuLinkUpdateSubtreesHashCacheClear() {
     // The ID of a (any) admin menu link.
     $admin_menu_link_id = 'system.admin_config_development';
 
@@ -144,7 +144,7 @@ function testMenuLinkUpdateSubtreesHashCacheClear() {
    * Exercises the toolbar_user_role_update() and toolbar_user_update() hook
    * implementations.
    */
-  function testUserRoleUpdateSubtreesHashCacheClear() {
+  public function testUserRoleUpdateSubtreesHashCacheClear() {
     // Find the new role ID.
     $all_rids = $this->adminUser->getRoles();
     unset($all_rids[array_search(RoleInterface::AUTHENTICATED_ID, $all_rids)]);
@@ -208,7 +208,7 @@ function testUserRoleUpdateSubtreesHashCacheClear() {
    * Tests that changes to a user account by another user clears the changed
    * account's toolbar cached, not the user's who took the action.
    */
-  function testNonCurrentUserAccountUpdates() {
+  public function testNonCurrentUserAccountUpdates() {
     $admin_user_id = $this->adminUser->id();
     $this->hash = $this->getSubtreesHash();
 
@@ -243,7 +243,7 @@ function testNonCurrentUserAccountUpdates() {
   /**
    * Tests that toolbar cache is cleared when string translations are made.
    */
-  function testLocaleTranslationSubtreesHashCacheClear() {
+  public function testLocaleTranslationSubtreesHashCacheClear() {
     $admin_user = $this->adminUser;
     // User to translate and delete string.
     $translate_user = $this->drupalCreateUser(['translate interface', 'access administration pages']);
@@ -324,7 +324,7 @@ function testLocaleTranslationSubtreesHashCacheClear() {
   /**
    * Tests that the 'toolbar/subtrees/{hash}' is reachable and correct.
    */
-  function testSubtreesJsonRequest() {
+  public function testSubtreesJsonRequest() {
     $admin_user = $this->adminUser;
     $this->drupalLogin($admin_user);
     // Request a new page to refresh the drupalSettings object.
@@ -339,7 +339,7 @@ function testSubtreesJsonRequest() {
   /**
    * Test that subtrees hashes vary by the language of the page.
    */
-  function testLanguageSwitching() {
+  public function testLanguageSwitching() {
     // Create a new language with the langcode 'xx'.
     $langcode = 'xx';
     $language = ConfigurableLanguage::createFromLangcode($langcode);
diff --git a/core/modules/toolbar/src/Tests/ToolbarMenuTranslationTest.php b/core/modules/toolbar/src/Tests/ToolbarMenuTranslationTest.php
index a98dacfcd4f9fba886b36ed4618effaadf5501d6..f4d6a114187091d8612bd4d3fbfbf9ff6abe5778 100644
--- a/core/modules/toolbar/src/Tests/ToolbarMenuTranslationTest.php
+++ b/core/modules/toolbar/src/Tests/ToolbarMenuTranslationTest.php
@@ -36,7 +36,7 @@ protected function setUp() {
   /**
    * Tests that toolbar classes don't change when adding a translation.
    */
-  function testToolbarClasses() {
+  public function testToolbarClasses() {
     $langcode = 'es';
 
     // Add Spanish.
diff --git a/core/modules/toolbar/tests/src/Functional/ToolbarHookToolbarTest.php b/core/modules/toolbar/tests/src/Functional/ToolbarHookToolbarTest.php
index 6369946fc9d29048e090eea436feecea48311045..f3d3ce6118db27e2dac1d28dfc5f1fd07f7cdbd8 100644
--- a/core/modules/toolbar/tests/src/Functional/ToolbarHookToolbarTest.php
+++ b/core/modules/toolbar/tests/src/Functional/ToolbarHookToolbarTest.php
@@ -36,7 +36,7 @@ protected function setUp() {
   /**
    * Tests for a tab and tray provided by a module implementing hook_toolbar().
    */
-  function testHookToolbar() {
+  public function testHookToolbar() {
     $this->drupalGet('test-page');
     $this->assertResponse(200);
 
diff --git a/core/modules/tracker/src/Tests/TrackerTest.php b/core/modules/tracker/src/Tests/TrackerTest.php
index 2ac7cef9a0a9bc69385fe65b38bba755a953fcae..fa95299b9a9851a6bbd6327697254ff799a5c4e3 100644
--- a/core/modules/tracker/src/Tests/TrackerTest.php
+++ b/core/modules/tracker/src/Tests/TrackerTest.php
@@ -63,7 +63,7 @@ protected function setUp() {
   /**
    * Tests for the presence of nodes on the global tracker listing.
    */
-  function testTrackerAll() {
+  public function testTrackerAll() {
     $this->drupalLogin($this->user);
 
     $unpublished = $this->drupalCreateNode([
@@ -129,7 +129,7 @@ function testTrackerAll() {
   /**
    * Tests for the presence of nodes on a user's tracker listing.
    */
-  function testTrackerUser() {
+  public function testTrackerUser() {
     $this->drupalLogin($this->user);
 
     $unpublished = $this->drupalCreateNode([
@@ -223,7 +223,7 @@ function testTrackerUser() {
   /**
    * Tests the metadata for the "new"/"updated" indicators.
    */
-  function testTrackerHistoryMetadata() {
+  public function testTrackerHistoryMetadata() {
     $this->drupalLogin($this->user);
 
     // Create a page node.
@@ -274,7 +274,7 @@ function testTrackerHistoryMetadata() {
   /**
    * Tests for ordering on a users tracker listing when comments are posted.
    */
-  function testTrackerOrderingNewComments() {
+  public function testTrackerOrderingNewComments() {
     $this->drupalLogin($this->user);
 
     $node_one = $this->drupalCreateNode([
@@ -340,7 +340,7 @@ function testTrackerOrderingNewComments() {
   /**
    * Tests that existing nodes are indexed by cron.
    */
-  function testTrackerCronIndexing() {
+  public function testTrackerCronIndexing() {
     $this->drupalLogin($this->user);
 
     // Create 3 nodes.
@@ -393,7 +393,7 @@ function testTrackerCronIndexing() {
   /**
    * Tests that publish/unpublish works at admin/content/node.
    */
-  function testTrackerAdminUnpublish() {
+  public function testTrackerAdminUnpublish() {
     \Drupal::service('module_installer')->install(['views']);
     \Drupal::service('router.builder')->rebuild();
     $admin_user = $this->drupalCreateUser(['access content overview', 'administer nodes', 'bypass node access']);
@@ -438,7 +438,7 @@ function testTrackerAdminUnpublish() {
    * @param bool $library_is_present
    *   Whether the drupal.tracker-history library should be present or not.
    */
-  function assertHistoryMetadata($node_id, $node_timestamp, $node_last_comment_timestamp, $library_is_present = TRUE) {
+  public function assertHistoryMetadata($node_id, $node_timestamp, $node_last_comment_timestamp, $library_is_present = TRUE) {
     $settings = $this->getDrupalSettings();
     $this->assertIdentical($library_is_present, isset($settings['ajaxPageState']) && in_array('tracker/history', explode(',', $settings['ajaxPageState']['libraries'])), 'drupal.tracker-history library is present.');
     $this->assertIdentical(1, count($this->xpath('//table/tbody/tr/td[@data-history-node-id="' . $node_id . '" and @data-history-node-timestamp="' . $node_timestamp . '"]')), 'Tracker table cell contains the data-history-node-id and data-history-node-timestamp attributes for the node.');
diff --git a/core/modules/tracker/tests/src/Functional/TrackerNodeAccessTest.php b/core/modules/tracker/tests/src/Functional/TrackerNodeAccessTest.php
index ae9a6e0ebb9de5f4c99fd21969301e0437fbc9df..2b320ae4b6dfde17118310d8128ee9b3d45b7a71 100644
--- a/core/modules/tracker/tests/src/Functional/TrackerNodeAccessTest.php
+++ b/core/modules/tracker/tests/src/Functional/TrackerNodeAccessTest.php
@@ -35,7 +35,7 @@ protected function setUp() {
   /**
    * Ensure private node on /tracker is only visible to users with permission.
    */
-  function testTrackerNodeAccess() {
+  public function testTrackerNodeAccess() {
     // Create user with node test view permission.
     $access_user = $this->drupalCreateUser(['node test view', 'access user profiles']);
 
diff --git a/core/modules/update/src/Tests/UpdateContribTest.php b/core/modules/update/src/Tests/UpdateContribTest.php
index 2a7c675cc5e0bc7d65f75915601357c339a99f42..81f7117a3ac40ba30d1e8ef8bc68ec83781d8893 100644
--- a/core/modules/update/src/Tests/UpdateContribTest.php
+++ b/core/modules/update/src/Tests/UpdateContribTest.php
@@ -29,7 +29,7 @@ protected function setUp() {
   /**
    * Tests when there is no available release data for a contrib module.
    */
-  function testNoReleasesAvailable() {
+  public function testNoReleasesAvailable() {
     $system_info = [
       '#all' => [
         'version' => '8.0.0',
@@ -60,7 +60,7 @@ function testNoReleasesAvailable() {
   /**
    * Tests the basic functionality of a contrib module on the status report.
    */
-  function testUpdateContribBasic() {
+  public function testUpdateContribBasic() {
     $project_link = \Drupal::l(t('AAA Update test'), Url::fromUri('http://example.com/project/aaa_update_test'));
     $system_info = [
       '#all' => [
@@ -122,7 +122,7 @@ function testUpdateContribBasic() {
    * if you sort alphabetically by module name (which is the order we see things
    * inside system_rebuild_module_data() for example).
    */
-  function testUpdateContribOrder() {
+  public function testUpdateContribOrder() {
     // We want core to be version 8.0.0.
     $system_info = [
       '#all' => [
@@ -184,7 +184,7 @@ function testUpdateContribOrder() {
   /**
    * Tests that subthemes are notified about security updates for base themes.
    */
-  function testUpdateBaseThemeSecurityUpdate() {
+  public function testUpdateBaseThemeSecurityUpdate() {
     // @todo https://www.drupal.org/node/2338175 base themes have to be
     //  installed.
     // Only install the subtheme, not the base theme.
@@ -226,7 +226,7 @@ function testUpdateBaseThemeSecurityUpdate() {
    * @todo https://www.drupal.org/node/2338175 extensions can not be hidden and
    *   base themes have to be installed.
    */
-  function testUpdateShowDisabledThemes() {
+  public function testUpdateShowDisabledThemes() {
     $update_settings = $this->config('update.settings');
     // Make sure all the update_test_* themes are disabled.
     $extension_config = $this->config('core.extension');
@@ -291,7 +291,7 @@ function testUpdateShowDisabledThemes() {
   /**
    * Tests updates with a hidden base theme.
    */
-  function testUpdateHiddenBaseTheme() {
+  public function testUpdateHiddenBaseTheme() {
     module_load_include('compare.inc', 'update');
 
     // Install the subtheme.
@@ -322,7 +322,7 @@ function testUpdateHiddenBaseTheme() {
   /**
    * Makes sure that if we fetch from a broken URL, sane things happen.
    */
-  function testUpdateBrokenFetchURL() {
+  public function testUpdateBrokenFetchURL() {
     $system_info = [
       '#all' => [
         'version' => '8.0.0',
@@ -386,7 +386,7 @@ function testUpdateBrokenFetchURL() {
    * hook_update_status_alter() to try to mark this as missing a security
    * update, then assert if we see the appropriate warnings on the right pages.
    */
-  function testHookUpdateStatusAlter() {
+  public function testHookUpdateStatusAlter() {
     $update_test_config = $this->config('update_test.settings');
     $update_admin_user = $this->drupalCreateUser(['administer site configuration', 'administer software updates']);
     $this->drupalLogin($update_admin_user);
diff --git a/core/modules/update/src/Tests/UpdateCoreTest.php b/core/modules/update/src/Tests/UpdateCoreTest.php
index 48b3fcdcd989bff24a68317d3d4e9d038501be01..b6287c7c04d4eafc693952a0a5bb06ebb5105e94 100644
--- a/core/modules/update/src/Tests/UpdateCoreTest.php
+++ b/core/modules/update/src/Tests/UpdateCoreTest.php
@@ -44,7 +44,7 @@ protected function setSystemInfo($version) {
   /**
    * Tests the Update Manager module when no updates are available.
    */
-  function testNoUpdatesAvailable() {
+  public function testNoUpdatesAvailable() {
     foreach ([0, 1] as $minor_version) {
       foreach ([0, 1] as $patch_version) {
         foreach (['-alpha1', '-beta1', ''] as $extra_version) {
@@ -63,7 +63,7 @@ function testNoUpdatesAvailable() {
   /**
    * Tests the Update Manager module when one normal update is available.
    */
-  function testNormalUpdateAvailable() {
+  public function testNormalUpdateAvailable() {
     $this->setSystemInfo('8.0.0');
 
     // Ensure that the update check requires a token.
@@ -130,7 +130,7 @@ function testNormalUpdateAvailable() {
   /**
    * Tests the Update Manager module when a major update is available.
    */
-  function testMajorUpdateAvailable() {
+  public function testMajorUpdateAvailable() {
     foreach ([0, 1] as $minor_version) {
       foreach ([0, 1] as $patch_version) {
         foreach (['-alpha1', '-beta1', ''] as $extra_version) {
@@ -156,7 +156,7 @@ function testMajorUpdateAvailable() {
   /**
    * Tests the Update Manager module when a security update is available.
    */
-  function testSecurityUpdateAvailable() {
+  public function testSecurityUpdateAvailable() {
     foreach ([0, 1] as $minor_version) {
       $this->setSystemInfo("8.$minor_version.0");
       $this->refreshUpdateStatus(['drupal' => "$minor_version.2-sec"]);
@@ -174,7 +174,7 @@ function testSecurityUpdateAvailable() {
   /**
    * Ensures proper results where there are date mismatches among modules.
    */
-  function testDatestampMismatch() {
+  public function testDatestampMismatch() {
     $system_info = [
       '#all' => [
         // We need to think we're running a -dev snapshot to see dates.
@@ -197,7 +197,7 @@ function testDatestampMismatch() {
   /**
    * Checks that running cron updates the list of available updates.
    */
-  function testModulePageRunCron() {
+  public function testModulePageRunCron() {
     $this->setSystemInfo('8.0.0');
     $this->config('update.settings')
       ->set('fetch.url', Url::fromRoute('update_test.update_test')->setAbsolute()->toString())
@@ -214,7 +214,7 @@ function testModulePageRunCron() {
   /**
    * Checks the messages at admin/modules when the site is up to date.
    */
-  function testModulePageUpToDate() {
+  public function testModulePageUpToDate() {
     $this->setSystemInfo('8.0.0');
     // Instead of using refreshUpdateStatus(), set these manually.
     $this->config('update.settings')
@@ -235,7 +235,7 @@ function testModulePageUpToDate() {
   /**
    * Checks the messages at admin/modules when an update is missing.
    */
-  function testModulePageRegularUpdate() {
+  public function testModulePageRegularUpdate() {
     $this->setSystemInfo('8.0.0');
     // Instead of using refreshUpdateStatus(), set these manually.
     $this->config('update.settings')
@@ -256,7 +256,7 @@ function testModulePageRegularUpdate() {
   /**
    * Checks the messages at admin/modules when a security update is missing.
    */
-  function testModulePageSecurityUpdate() {
+  public function testModulePageSecurityUpdate() {
     $this->setSystemInfo('8.0.0');
     // Instead of using refreshUpdateStatus(), set these manually.
     $this->config('update.settings')
@@ -295,7 +295,7 @@ function testModulePageSecurityUpdate() {
   /**
    * Tests the Update Manager module when the update server returns 503 errors.
    */
-  function testServiceUnavailable() {
+  public function testServiceUnavailable() {
     $this->refreshUpdateStatus([], '503-error');
     // Ensure that no "Warning: SimpleXMLElement..." parse errors are found.
     $this->assertNoText('SimpleXMLElement');
@@ -305,7 +305,7 @@ function testServiceUnavailable() {
   /**
    * Tests that exactly one fetch task per project is created and not more.
    */
-  function testFetchTasks() {
+  public function testFetchTasks() {
     $projecta = [
       'name' => 'aaa_update_test',
     ];
@@ -331,7 +331,7 @@ function testFetchTasks() {
   /**
    * Checks language module in core package at admin/reports/updates.
    */
-  function testLanguageModuleUpdate() {
+  public function testLanguageModuleUpdate() {
     $this->setSystemInfo('8.0.0');
     // Instead of using refreshUpdateStatus(), set these manually.
     $this->config('update.settings')
diff --git a/core/modules/update/src/Tests/UpdateDeleteFileIfStaleTest.php b/core/modules/update/src/Tests/UpdateDeleteFileIfStaleTest.php
index 96f3ca8274e8e068bcd7f14ad5f9650bc8347fb4..99499d77c26a33ae12b2cab8948ba210780f4a3b 100644
--- a/core/modules/update/src/Tests/UpdateDeleteFileIfStaleTest.php
+++ b/core/modules/update/src/Tests/UpdateDeleteFileIfStaleTest.php
@@ -26,7 +26,7 @@ protected function setUp() {
   /**
    * Tests the deletion of stale files.
    */
-  function testUpdateDeleteFileIfStale() {
+  public function testUpdateDeleteFileIfStale() {
     $file_name = file_unmanaged_save_data($this->randomMachineName());
     $this->assertNotNull($file_name);
 
diff --git a/core/modules/update/src/Tests/UpdateUploadTest.php b/core/modules/update/src/Tests/UpdateUploadTest.php
index c3de290d117eb5ac040b968cabe85bfaad9b2fda..80d3f15d29f0ebd69e1fe63cc677241e69e4c49e 100644
--- a/core/modules/update/src/Tests/UpdateUploadTest.php
+++ b/core/modules/update/src/Tests/UpdateUploadTest.php
@@ -129,7 +129,7 @@ public function testUploadModule() {
   /**
    * Ensures that archiver extensions are properly merged in the UI.
    */
-  function testFileNameExtensionMerging() {
+  public function testFileNameExtensionMerging() {
     $this->drupalGet('admin/modules/install');
     // Make sure the bogus extension supported by update_test.module is there.
     $this->assertPattern('/file extensions are supported:.*update-test-extension/', "Found 'update-test-extension' extension.");
@@ -140,7 +140,7 @@ function testFileNameExtensionMerging() {
   /**
    * Checks the messages on update manager pages when missing a security update.
    */
-  function testUpdateManagerCoreSecurityUpdateMessages() {
+  public function testUpdateManagerCoreSecurityUpdateMessages() {
     $setting = [
       '#all' => [
         'version' => '8.0.0',
diff --git a/core/modules/user/src/Entity/User.php b/core/modules/user/src/Entity/User.php
index 66a49543dfb72174646598537844e7c4738e2474..7529532581e9ee847dee6789f214c800dba3b5bc 100644
--- a/core/modules/user/src/Entity/User.php
+++ b/core/modules/user/src/Entity/User.php
@@ -308,7 +308,7 @@ public function getTimeZone() {
   /**
    * {@inheritdoc}
    */
-  function getPreferredLangcode($fallback_to_default = TRUE) {
+  public function getPreferredLangcode($fallback_to_default = TRUE) {
     $language_list = $this->languageManager()->getLanguages();
     $preferred_langcode = $this->get('preferred_langcode')->value;
     if (!empty($preferred_langcode) && isset($language_list[$preferred_langcode])) {
@@ -322,7 +322,7 @@ function getPreferredLangcode($fallback_to_default = TRUE) {
   /**
    * {@inheritdoc}
    */
-  function getPreferredAdminLangcode($fallback_to_default = TRUE) {
+  public function getPreferredAdminLangcode($fallback_to_default = TRUE) {
     $language_list = $this->languageManager()->getLanguages();
     $preferred_langcode = $this->get('preferred_admin_langcode')->value;
     if (!empty($preferred_langcode) && isset($language_list[$preferred_langcode])) {
diff --git a/core/modules/user/src/Form/UserPermissionsForm.php b/core/modules/user/src/Form/UserPermissionsForm.php
index 0b3da3b8a76e5dcfd27b7551e2bfbf1f1f0d7150..3c5e46b0db41c4d1f9ade2c0206b590efb3129ec 100644
--- a/core/modules/user/src/Form/UserPermissionsForm.php
+++ b/core/modules/user/src/Form/UserPermissionsForm.php
@@ -192,7 +192,7 @@ public function buildForm(array $form, FormStateInterface $form_state) {
   /**
    * {@inheritdoc}
    */
-  function submitForm(array &$form, FormStateInterface $form_state) {
+  public function submitForm(array &$form, FormStateInterface $form_state) {
     foreach ($form_state->getValue('role_names') as $role_name => $name) {
       user_role_change_permissions($role_name, (array) $form_state->getValue($role_name));
     }
diff --git a/core/modules/user/src/Plugin/views/field/Permissions.php b/core/modules/user/src/Plugin/views/field/Permissions.php
index ecba8df9309b6aa27663525e19344600bbd1fd9b..71aef59756742a224a123b03e294dc5e74911f60 100644
--- a/core/modules/user/src/Plugin/views/field/Permissions.php
+++ b/core/modules/user/src/Plugin/views/field/Permissions.php
@@ -105,7 +105,7 @@ public function preRender(&$values) {
     }
   }
 
-  function render_item($count, $item) {
+  public function render_item($count, $item) {
     return $item['permission'];
   }
 
diff --git a/core/modules/user/src/Plugin/views/field/Roles.php b/core/modules/user/src/Plugin/views/field/Roles.php
index bb7dc20977960f707ec0495dad9e89c132b946e9..e7d9495bcadd636a6fee21ef050993b552bdae99 100644
--- a/core/modules/user/src/Plugin/views/field/Roles.php
+++ b/core/modules/user/src/Plugin/views/field/Roles.php
@@ -90,7 +90,7 @@ public function preRender(&$values) {
     }
   }
 
-  function render_item($count, $item) {
+  public function render_item($count, $item) {
     return $item['role'];
   }
 
diff --git a/core/modules/user/src/Plugin/views/filter/Roles.php b/core/modules/user/src/Plugin/views/filter/Roles.php
index b04e1b1f51742b5be8cbfa5e3220cbc5a5e2e484..d84e3240949b31ed99fc362c3a958d3f616fbdf7 100644
--- a/core/modules/user/src/Plugin/views/filter/Roles.php
+++ b/core/modules/user/src/Plugin/views/filter/Roles.php
@@ -62,7 +62,7 @@ public function getValueOptions() {
   /**
    * Override empty and not empty operator labels to be clearer for user roles.
    */
-  function operators() {
+  public function operators() {
     $operators = parent::operators();
     $operators['empty']['title'] = $this->t("Only has the 'authenticated user' role");
     $operators['not empty']['title'] = $this->t("Has roles in addition to 'authenticated user'");
diff --git a/core/modules/user/src/PrivateTempStoreFactory.php b/core/modules/user/src/PrivateTempStoreFactory.php
index acbf41bc5ddf0e101f75b715f1c319b552105534..063a9207cf3644a54c538b7b7c7a982d5e2d91a2 100644
--- a/core/modules/user/src/PrivateTempStoreFactory.php
+++ b/core/modules/user/src/PrivateTempStoreFactory.php
@@ -61,7 +61,7 @@ class PrivateTempStoreFactory {
    * @param int $expire
    *   The time to live for items, in seconds.
    */
-  function __construct(KeyValueExpirableFactoryInterface $storage_factory, LockBackendInterface $lock_backend, AccountProxyInterface $current_user, RequestStack $request_stack, $expire = 604800) {
+  public function __construct(KeyValueExpirableFactoryInterface $storage_factory, LockBackendInterface $lock_backend, AccountProxyInterface $current_user, RequestStack $request_stack, $expire = 604800) {
     $this->storageFactory = $storage_factory;
     $this->lockBackend = $lock_backend;
     $this->currentUser = $current_user;
@@ -79,7 +79,7 @@ function __construct(KeyValueExpirableFactoryInterface $storage_factory, LockBac
    * @return \Drupal\user\PrivateTempStore
    *   An instance of the key/value store.
    */
-  function get($collection) {
+  public function get($collection) {
     // Store the data for this collection in the database.
     $storage = $this->storageFactory->get("user.private_tempstore.$collection");
     return new PrivateTempStore($storage, $this->lockBackend, $this->currentUser, $this->requestStack, $this->expire);
diff --git a/core/modules/user/src/SharedTempStoreFactory.php b/core/modules/user/src/SharedTempStoreFactory.php
index 662ef47aaf9ed1ccb7c4530e1e829eb8dd2ed530..c1c48a93b5b0e68c23d50f9004f44b99e536a313 100644
--- a/core/modules/user/src/SharedTempStoreFactory.php
+++ b/core/modules/user/src/SharedTempStoreFactory.php
@@ -51,7 +51,7 @@ class SharedTempStoreFactory {
    * @param int $expire
    *   The time to live for items, in seconds.
    */
-  function __construct(KeyValueExpirableFactoryInterface $storage_factory, LockBackendInterface $lock_backend, RequestStack $request_stack, $expire = 604800) {
+  public function __construct(KeyValueExpirableFactoryInterface $storage_factory, LockBackendInterface $lock_backend, RequestStack $request_stack, $expire = 604800) {
     $this->storageFactory = $storage_factory;
     $this->lockBackend = $lock_backend;
     $this->requestStack = $request_stack;
@@ -72,7 +72,7 @@ function __construct(KeyValueExpirableFactoryInterface $storage_factory, LockBac
    * @return \Drupal\user\SharedTempStore
    *   An instance of the key/value store.
    */
-  function get($collection, $owner = NULL) {
+  public function get($collection, $owner = NULL) {
     // Use the currently authenticated user ID or the active user ID unless
     // the owner is overridden.
     if (!isset($owner)) {
diff --git a/core/modules/user/src/Tests/UserAccountLinksTest.php b/core/modules/user/src/Tests/UserAccountLinksTest.php
index 7f456c4a055cb090ff148e2bba01565f838c1b18..15a4b205e7e88553d27f5f151f5399b4872c202c 100644
--- a/core/modules/user/src/Tests/UserAccountLinksTest.php
+++ b/core/modules/user/src/Tests/UserAccountLinksTest.php
@@ -31,7 +31,7 @@ protected function setUp() {
   /**
    * Tests the secondary menu.
    */
-  function testSecondaryMenu() {
+  public function testSecondaryMenu() {
     // Create a regular user.
     $user = $this->drupalCreateUser([]);
 
@@ -71,7 +71,7 @@ function testSecondaryMenu() {
   /**
    * Tests disabling the 'My account' link.
    */
-  function testDisabledAccountLink() {
+  public function testDisabledAccountLink() {
     // Create an admin user and log in.
     $this->drupalLogin($this->drupalCreateUser(['access administration pages', 'administer menu']));
 
@@ -110,7 +110,7 @@ function testDisabledAccountLink() {
   /**
    * Tests page title is set correctly on user account tabs.
    */
-  function testAccountPageTitles() {
+  public function testAccountPageTitles() {
     // Default page titles are suffixed with the site name - Drupal.
     $title_suffix = ' | Drupal';
 
diff --git a/core/modules/user/src/Tests/UserAdminLanguageTest.php b/core/modules/user/src/Tests/UserAdminLanguageTest.php
index 87bf835f617e0797a2e559b683c1e89e03cefaee..cd6cc657bf0d2a071ac80f54376448487fbfc1f7 100644
--- a/core/modules/user/src/Tests/UserAdminLanguageTest.php
+++ b/core/modules/user/src/Tests/UserAdminLanguageTest.php
@@ -44,7 +44,7 @@ protected function setUp() {
   /**
    * Tests that admin language is not configurable in single language sites.
    */
-  function testUserAdminLanguageConfigurationNotAvailableWithOnlyOneLanguage() {
+  public function testUserAdminLanguageConfigurationNotAvailableWithOnlyOneLanguage() {
     $this->drupalLogin($this->adminUser);
     $this->setLanguageNegotiation();
     $path = 'user/' . $this->adminUser->id() . '/edit';
@@ -56,7 +56,7 @@ function testUserAdminLanguageConfigurationNotAvailableWithOnlyOneLanguage() {
   /**
    * Tests that admin language negotiation is configurable only if enabled.
    */
-  function testUserAdminLanguageConfigurationAvailableWithAdminLanguageNegotiation() {
+  public function testUserAdminLanguageConfigurationAvailableWithAdminLanguageNegotiation() {
     $this->drupalLogin($this->adminUser);
     $this->addCustomLanguage();
     $path = 'user/' . $this->adminUser->id() . '/edit';
@@ -83,7 +83,7 @@ function testUserAdminLanguageConfigurationAvailableWithAdminLanguageNegotiation
    * have a setting for pages they cannot access, so they should not be able to
    * set a language for those pages.
    */
-  function testUserAdminLanguageConfigurationAvailableIfAdminLanguageNegotiationIsEnabled() {
+  public function testUserAdminLanguageConfigurationAvailableIfAdminLanguageNegotiationIsEnabled() {
     $this->drupalLogin($this->adminUser);
     // Adds a new language, because with only one language, setting won't show.
     $this->addCustomLanguage();
@@ -103,7 +103,7 @@ function testUserAdminLanguageConfigurationAvailableIfAdminLanguageNegotiationIs
   /**
    * Tests the actual language negotiation.
    */
-  function testActualNegotiation() {
+  public function testActualNegotiation() {
     $this->drupalLogin($this->adminUser);
     $this->addCustomLanguage();
     $this->setLanguageNegotiation();
@@ -155,7 +155,7 @@ function testActualNegotiation() {
    * @param bool $admin_first
    *   Whether the admin negotiation should be first.
    */
-  function setLanguageNegotiation($admin_first = FALSE) {
+  public function setLanguageNegotiation($admin_first = FALSE) {
     $edit = [
       'language_interface[enabled][language-user-admin]' => TRUE,
       'language_interface[enabled][language-url]' => TRUE,
@@ -168,7 +168,7 @@ function setLanguageNegotiation($admin_first = FALSE) {
   /**
    * Helper method for adding a custom language.
    */
-  function addCustomLanguage() {
+  public function addCustomLanguage() {
     $langcode = 'xx';
     // The English name for the language.
     $name = $this->randomMachineName(16);
diff --git a/core/modules/user/src/Tests/UserAdminTest.php b/core/modules/user/src/Tests/UserAdminTest.php
index 6c83016cde7246c601a81560ed43742ba3b24caa..f3ee85a97be03c9385a4db7b21856775ca2038d2 100644
--- a/core/modules/user/src/Tests/UserAdminTest.php
+++ b/core/modules/user/src/Tests/UserAdminTest.php
@@ -22,7 +22,7 @@ class UserAdminTest extends WebTestBase {
   /**
    * Registers a user and deletes it.
    */
-  function testUserAdmin() {
+  public function testUserAdmin() {
     $config = $this->config('user.settings');
     $user_a = $this->drupalCreateUser();
     $user_a->name = 'User A';
@@ -149,7 +149,7 @@ function testUserAdmin() {
   /**
    * Tests the alternate notification email address for user mails.
    */
-  function testNotificationEmailAddress() {
+  public function testNotificationEmailAddress() {
     // Test that the Notification Email address field is on the config page.
     $admin_user = $this->drupalCreateUser(['administer users', 'administer account settings']);
     $this->drupalLogin($admin_user);
diff --git a/core/modules/user/src/Tests/UserBlocksTest.php b/core/modules/user/src/Tests/UserBlocksTest.php
index beb263b23e600343bdf084c0ee56919dd24b350b..1495b20b08b71b4d2a054e4b2afea4c7929deed2 100644
--- a/core/modules/user/src/Tests/UserBlocksTest.php
+++ b/core/modules/user/src/Tests/UserBlocksTest.php
@@ -37,7 +37,7 @@ protected function setUp() {
   /**
    * Tests that user login block is hidden from user/login.
    */
-  function testUserLoginBlockVisibility() {
+  public function testUserLoginBlockVisibility() {
     // Array keyed list where key being the URL address and value being expected
     // visibility as boolean type.
     $paths = [
@@ -61,7 +61,7 @@ function testUserLoginBlockVisibility() {
   /**
    * Test the user login block.
    */
-  function testUserLoginBlock() {
+  public function testUserLoginBlock() {
     // Create a user with some permission that anonymous users lack.
     $user = $this->drupalCreateUser(['administer permissions']);
 
@@ -103,7 +103,7 @@ function testUserLoginBlock() {
   /**
    * Test the Who's Online block.
    */
-  function testWhosOnlineBlock() {
+  public function testWhosOnlineBlock() {
     $block = $this->drupalPlaceBlock('views_block:who_s_online-who_s_online_block');
 
     // Generate users.
diff --git a/core/modules/user/src/Tests/UserCancelTest.php b/core/modules/user/src/Tests/UserCancelTest.php
index 6cfd5baf1a050f3af14834d184be22bcf9d18efb..a74626e16e85a1982eace250157a4e63ed164c9c 100644
--- a/core/modules/user/src/Tests/UserCancelTest.php
+++ b/core/modules/user/src/Tests/UserCancelTest.php
@@ -33,7 +33,7 @@ protected function setUp() {
   /**
    * Attempt to cancel account without permission.
    */
-  function testUserCancelWithoutPermission() {
+  public function testUserCancelWithoutPermission() {
     $node_storage = $this->container->get('entity.manager')->getStorage('node');
     $this->config('user.settings')->set('cancel_method', 'user_cancel_reassign')->save();
     $user_storage = $this->container->get('entity.manager')->getStorage('user');
@@ -94,7 +94,7 @@ public function testUserCancelChangePermission() {
    * This should never be possible, or the site owner would become unable to
    * administer the site.
    */
-  function testUserCancelUid1() {
+  public function testUserCancelUid1() {
     $user_storage = $this->container->get('entity.manager')->getStorage('user');
 
     \Drupal::service('module_installer')->install(['views']);
@@ -135,7 +135,7 @@ function testUserCancelUid1() {
   /**
    * Attempt invalid account cancellations.
    */
-  function testUserCancelInvalid() {
+  public function testUserCancelInvalid() {
     $node_storage = $this->container->get('entity.manager')->getStorage('node');
     $this->config('user.settings')->set('cancel_method', 'user_cancel_reassign')->save();
     $user_storage = $this->container->get('entity.manager')->getStorage('user');
@@ -183,7 +183,7 @@ function testUserCancelInvalid() {
   /**
    * Disable account and keep all content.
    */
-  function testUserBlock() {
+  public function testUserBlock() {
     $this->config('user.settings')->set('cancel_method', 'user_cancel_block')->save();
     $user_storage = $this->container->get('entity.manager')->getStorage('user');
 
@@ -221,7 +221,7 @@ function testUserBlock() {
   /**
    * Disable account and unpublish all content.
    */
-  function testUserBlockUnpublish() {
+  public function testUserBlockUnpublish() {
     $node_storage = $this->container->get('entity.manager')->getStorage('node');
     $this->config('user.settings')->set('cancel_method', 'user_cancel_block_unpublish')->save();
     // Create comment field on page.
@@ -291,7 +291,7 @@ function testUserBlockUnpublish() {
   /**
    * Delete account and anonymize all content.
    */
-  function testUserAnonymize() {
+  public function testUserAnonymize() {
     $node_storage = $this->container->get('entity.manager')->getStorage('node');
     $this->config('user.settings')->set('cancel_method', 'user_cancel_reassign')->save();
     // Create comment field on page.
@@ -418,7 +418,7 @@ public function testUserAnonymizeBatch() {
   /**
    * Delete account and remove all content.
    */
-  function testUserDelete() {
+  public function testUserDelete() {
     $node_storage = $this->container->get('entity.manager')->getStorage('node');
     $this->config('user.settings')->set('cancel_method', 'user_cancel_delete')->save();
     \Drupal::service('module_installer')->install(['comment']);
@@ -489,7 +489,7 @@ function testUserDelete() {
   /**
    * Create an administrative user and delete another user.
    */
-  function testUserCancelByAdmin() {
+  public function testUserCancelByAdmin() {
     $this->config('user.settings')->set('cancel_method', 'user_cancel_reassign')->save();
 
     // Create a regular user.
@@ -514,7 +514,7 @@ function testUserCancelByAdmin() {
   /**
    * Tests deletion of a user account without an email address.
    */
-  function testUserWithoutEmailCancelByAdmin() {
+  public function testUserWithoutEmailCancelByAdmin() {
     $this->config('user.settings')->set('cancel_method', 'user_cancel_reassign')->save();
 
     // Create a regular user.
@@ -542,7 +542,7 @@ function testUserWithoutEmailCancelByAdmin() {
   /**
    * Create an administrative user and mass-delete other users.
    */
-  function testMassUserCancelByAdmin() {
+  public function testMassUserCancelByAdmin() {
     \Drupal::service('module_installer')->install(['views']);
     \Drupal::service('router.builder')->rebuild();
     $this->config('user.settings')->set('cancel_method', 'user_cancel_reassign')->save();
@@ -597,7 +597,7 @@ function testMassUserCancelByAdmin() {
   /**
    * Tests user cancel with node access.
    */
-  function testUserDeleteWithContentAndNodeAccess() {
+  public function testUserDeleteWithContentAndNodeAccess() {
 
     \Drupal::service('module_installer')->install(['node_access_test']);
     // Rebuild node access.
diff --git a/core/modules/user/src/Tests/UserEditTest.php b/core/modules/user/src/Tests/UserEditTest.php
index 7c2fe4f311e33dc54122a3bb1e8b14bd2149139b..6f1e36997110ff418003e813a9c4c7b209f61c34 100644
--- a/core/modules/user/src/Tests/UserEditTest.php
+++ b/core/modules/user/src/Tests/UserEditTest.php
@@ -14,7 +14,7 @@ class UserEditTest extends WebTestBase {
   /**
    * Test user edit page.
    */
-  function testUserEdit() {
+  public function testUserEdit() {
     // Test user edit functionality.
     $user1 = $this->drupalCreateUser(['change own username']);
     $user2 = $this->drupalCreateUser([]);
@@ -131,7 +131,7 @@ public function testUserWith0Password() {
   /**
    * Tests editing of a user account without an email address.
    */
-  function testUserWithoutEmailEdit() {
+  public function testUserWithoutEmailEdit() {
     // Test that an admin can edit users without an email address.
     $admin = $this->drupalCreateUser(['administer users']);
     $this->drupalLogin($admin);
diff --git a/core/modules/user/src/Tests/UserLanguageCreationTest.php b/core/modules/user/src/Tests/UserLanguageCreationTest.php
index e38a9c03eda2705abb60f0baa90ea7e1250e87c6..0dd29079ae42179715f035c2b38c9b936c4a9c97 100644
--- a/core/modules/user/src/Tests/UserLanguageCreationTest.php
+++ b/core/modules/user/src/Tests/UserLanguageCreationTest.php
@@ -23,7 +23,7 @@ class UserLanguageCreationTest extends WebTestBase {
   /**
    * Functional test for language handling during user creation.
    */
-  function testLocalUserCreation() {
+  public function testLocalUserCreation() {
     // User to add and remove language and create new users.
     $admin_user = $this->drupalCreateUser(['administer languages', 'access administration pages', 'administer users']);
     $this->drupalLogin($admin_user);
diff --git a/core/modules/user/src/Tests/UserLoginTest.php b/core/modules/user/src/Tests/UserLoginTest.php
index 406ccc04374ee717e9e633aa4847984e92dcc874..d92c1c7ae67eb63aa167bb61973ea3582577593b 100644
--- a/core/modules/user/src/Tests/UserLoginTest.php
+++ b/core/modules/user/src/Tests/UserLoginTest.php
@@ -15,7 +15,7 @@ class UserLoginTest extends WebTestBase {
   /**
    * Tests login with destination.
    */
-  function testLoginCacheTagsAndDestination() {
+  public function testLoginCacheTagsAndDestination() {
     $this->drupalGet('user/login');
     // The user login form says "Enter your <site name> username.", hence it
     // depends on config:system.site, and its cache tags should be present.
@@ -31,7 +31,7 @@ function testLoginCacheTagsAndDestination() {
   /**
    * Test the global login flood control.
    */
-  function testGlobalLoginFloodControl() {
+  public function testGlobalLoginFloodControl() {
     $this->config('user.flood')
       ->set('ip_limit', 10)
       // Set a high per-user limit out so that it is not relevant in the test.
@@ -68,7 +68,7 @@ function testGlobalLoginFloodControl() {
   /**
    * Test the per-user login flood control.
    */
-  function testPerUserLoginFloodControl() {
+  public function testPerUserLoginFloodControl() {
     $this->config('user.flood')
       // Set a high global limit out so that it is not relevant in the test.
       ->set('ip_limit', 4000)
@@ -108,7 +108,7 @@ function testPerUserLoginFloodControl() {
   /**
    * Test that user password is re-hashed upon login after changing $count_log2.
    */
-  function testPasswordRehashOnLogin() {
+  public function testPasswordRehashOnLogin() {
     // Determine default log2 for phpass hashing algorithm
     $default_count_log2 = 16;
 
@@ -154,7 +154,7 @@ function testPasswordRehashOnLogin() {
    *   .
    *   - Set to NULL to expect a failed login.
    */
-  function assertFailedLogin($account, $flood_trigger = NULL) {
+  public function assertFailedLogin($account, $flood_trigger = NULL) {
     $edit = [
       'name' => $account->getUsername(),
       'pass' => $account->pass_raw,
diff --git a/core/modules/user/src/Tests/UserPasswordResetTest.php b/core/modules/user/src/Tests/UserPasswordResetTest.php
index fb19779d1c723aae26560f6c29739d6dc0dc05ed..528d38bc96eb4947fdbfbaec8e6b1f1d9547645b 100644
--- a/core/modules/user/src/Tests/UserPasswordResetTest.php
+++ b/core/modules/user/src/Tests/UserPasswordResetTest.php
@@ -69,7 +69,7 @@ protected function setUp() {
   /**
    * Tests password reset functionality.
    */
-  function testUserPasswordReset() {
+  public function testUserPasswordReset() {
     // Verify that accessing the password reset form without having the session
     // variables set results in an access denied message.
     $this->drupalGet(Url::fromRoute('user.reset.form', ['uid' => $this->account->id()]));
@@ -300,7 +300,7 @@ public function testUserResetPasswordTextboxFilled() {
   /**
    * Make sure that users cannot forge password reset URLs of other users.
    */
-  function testResetImpersonation() {
+  public function testResetImpersonation() {
     // Create two identical user accounts except for the user name. They must
     // have the same empty password, so we can't use $this->drupalCreateUser().
     $edit = [];
diff --git a/core/modules/user/src/Tests/UserPermissionsTest.php b/core/modules/user/src/Tests/UserPermissionsTest.php
index 50a7f9e32979506bd47159a53b41d8a67029c96c..4f9e260abc7b4d0a543e4edea79253c40a02051b 100644
--- a/core/modules/user/src/Tests/UserPermissionsTest.php
+++ b/core/modules/user/src/Tests/UserPermissionsTest.php
@@ -42,7 +42,7 @@ protected function setUp() {
   /**
    * Test changing user permissions through the permissions page.
    */
-  function testUserPermissionChanges() {
+  public function testUserPermissionChanges() {
     $permissions_hash_generator = $this->container->get('user_permissions_hash_generator');
 
     $storage = $this->container->get('entity.manager')->getStorage('user_role');
@@ -92,7 +92,7 @@ function testUserPermissionChanges() {
   /**
    * Test assigning of permissions for the administrator role.
    */
-  function testAdministratorRole() {
+  public function testAdministratorRole() {
     $this->drupalLogin($this->adminUser);
     $this->drupalGet('admin/config/people/accounts');
 
@@ -135,7 +135,7 @@ function testAdministratorRole() {
   /**
    * Verify proper permission changes by user_role_change_permissions().
    */
-  function testUserRoleChangePermissions() {
+  public function testUserRoleChangePermissions() {
     $permissions_hash_generator = $this->container->get('user_permissions_hash_generator');
 
     $rid = $this->rid;
diff --git a/core/modules/user/src/Tests/UserPictureTest.php b/core/modules/user/src/Tests/UserPictureTest.php
index e4c4d9abec157d085b70800b52087c2820d1fc19..6d546f0b4fb62d5bad6bf8410ebd4445e8823cd3 100644
--- a/core/modules/user/src/Tests/UserPictureTest.php
+++ b/core/modules/user/src/Tests/UserPictureTest.php
@@ -44,7 +44,7 @@ protected function setUp() {
   /**
    * Tests creation, display, and deletion of user pictures.
    */
-  function testCreateDeletePicture() {
+  public function testCreateDeletePicture() {
     $this->drupalLogin($this->webUser);
 
     // Save a new picture.
@@ -81,7 +81,7 @@ function testCreateDeletePicture() {
   /**
    * Tests embedded users on node pages.
    */
-  function testPictureOnNodeComment() {
+  public function testPictureOnNodeComment() {
     $this->drupalLogin($this->webUser);
 
     // Save a new picture.
@@ -129,7 +129,7 @@ function testPictureOnNodeComment() {
   /**
    * Edits the user picture for the test user.
    */
-  function saveUserPicture($image) {
+  public function saveUserPicture($image) {
     $edit = ['files[user_picture_0]' => drupal_realpath($image->uri)];
     $this->drupalPostForm('user/' . $this->webUser->id() . '/edit', $edit, t('Save'));
 
diff --git a/core/modules/user/src/Tests/UserRegistrationTest.php b/core/modules/user/src/Tests/UserRegistrationTest.php
index 6b6937c95cabc3641fff56b35575b2c15d255971..ca7a4f0c89e62e9c00dd01d44d24a7385716bb59 100644
--- a/core/modules/user/src/Tests/UserRegistrationTest.php
+++ b/core/modules/user/src/Tests/UserRegistrationTest.php
@@ -23,7 +23,7 @@ class UserRegistrationTest extends WebTestBase {
    */
   public static $modules = ['field_test'];
 
-  function testRegistrationWithEmailVerification() {
+  public function testRegistrationWithEmailVerification() {
     $config = $this->config('user.settings');
     // Require email verification.
     $config->set('verify_mail', TRUE)->save();
@@ -62,7 +62,7 @@ function testRegistrationWithEmailVerification() {
     $this->assertFalse($new_user->isActive(), 'New account is blocked until approved by an administrator.');
   }
 
-  function testRegistrationWithoutEmailVerification() {
+  public function testRegistrationWithoutEmailVerification() {
     $config = $this->config('user.settings');
     // Don't require email verification and allow registration by site visitors
     // without administrator approval.
@@ -128,7 +128,7 @@ function testRegistrationWithoutEmailVerification() {
     $this->assertText(t('Member for'), 'User can log in after administrator approval.');
   }
 
-  function testRegistrationEmailDuplicates() {
+  public function testRegistrationEmailDuplicates() {
     // Don't require email verification and allow registration by site visitors
     // without administrator approval.
     $this->config('user.settings')
@@ -223,7 +223,7 @@ public function testUuidFormState() {
     $this->assertTrue($user_storage->loadByProperties(['name' => $edit['name']]));
   }
 
-  function testRegistrationDefaultValues() {
+  public function testRegistrationDefaultValues() {
     // Don't require email verification and allow registration by site visitors
     // without administrator approval.
     $config_user_settings = $this->config('user.settings')
@@ -283,7 +283,7 @@ public function testUniqueFields() {
   /**
    * Tests Field API fields on user registration forms.
    */
-  function testRegistrationWithUserFields() {
+  public function testRegistrationWithUserFields() {
     // Create a field on 'user' entity type.
     $field_storage = FieldStorageConfig::create([
       'field_name' => 'test_user_field',
diff --git a/core/modules/user/src/Tests/UserRoleAdminTest.php b/core/modules/user/src/Tests/UserRoleAdminTest.php
index 5b0be69c830d014c02423d08822ced555586f86b..eca9915d77c1353bd51760c7faae1c1f70049227 100644
--- a/core/modules/user/src/Tests/UserRoleAdminTest.php
+++ b/core/modules/user/src/Tests/UserRoleAdminTest.php
@@ -39,7 +39,7 @@ protected function setUp() {
   /**
    * Test adding, renaming and deleting roles.
    */
-  function testRoleAdministration() {
+  public function testRoleAdministration() {
     $this->drupalLogin($this->adminUser);
     $default_langcode = \Drupal::languageManager()->getDefaultLanguage()->getId();
     // Test presence of tab.
@@ -98,7 +98,7 @@ function testRoleAdministration() {
   /**
    * Test user role weight change operation and ordering.
    */
-  function testRoleWeightOrdering() {
+  public function testRoleWeightOrdering() {
     $this->drupalLogin($this->adminUser);
     $roles = user_roles();
     $weight = count($roles);
diff --git a/core/modules/user/src/Tests/UserTimeZoneTest.php b/core/modules/user/src/Tests/UserTimeZoneTest.php
index 9b027b557156640a2a4d9dde9f350ef5fb1a0292..165c23c188e8fb92befb474bbaaca3392001d69c 100644
--- a/core/modules/user/src/Tests/UserTimeZoneTest.php
+++ b/core/modules/user/src/Tests/UserTimeZoneTest.php
@@ -22,7 +22,7 @@ class UserTimeZoneTest extends WebTestBase {
   /**
    * Tests the display of dates and time when user-configurable time zones are set.
    */
-  function testUserTimeZone() {
+  public function testUserTimeZone() {
     // Setup date/time settings for Los Angeles time.
     $this->config('system.date')
       ->set('timezone.user.configurable', 1)
diff --git a/core/modules/user/src/Tests/Views/AccessPermissionTest.php b/core/modules/user/src/Tests/Views/AccessPermissionTest.php
index f82b103d2830c2cf323b6d2e938095af482f450c..477abd94193ead01319f609212beda8bacefb99f 100644
--- a/core/modules/user/src/Tests/Views/AccessPermissionTest.php
+++ b/core/modules/user/src/Tests/Views/AccessPermissionTest.php
@@ -24,7 +24,7 @@ class AccessPermissionTest extends AccessTestBase {
   /**
    * Tests perm access plugin.
    */
-  function testAccessPerm() {
+  public function testAccessPerm() {
     $view = Views::getView('test_access_perm');
     $view->setDisplay();
 
diff --git a/core/modules/user/src/Tests/Views/AccessRoleTest.php b/core/modules/user/src/Tests/Views/AccessRoleTest.php
index 04f2876dc002f60fa8885213fb8dcd98c0dd0033..57055572d2c45dc0cb97719b229ce388af2f2f0a 100644
--- a/core/modules/user/src/Tests/Views/AccessRoleTest.php
+++ b/core/modules/user/src/Tests/Views/AccessRoleTest.php
@@ -25,7 +25,7 @@ class AccessRoleTest extends AccessTestBase {
   /**
    * Tests role access plugin.
    */
-  function testAccessRole() {
+  public function testAccessRole() {
     /** @var \Drupal\views\ViewEntityInterface $view */
     $view = \Drupal::entityManager()->getStorage('view')->load('test_access_role');
     $display = &$view->getDisplay('default');
diff --git a/core/modules/user/src/Tests/Views/ArgumentValidateTest.php b/core/modules/user/src/Tests/Views/ArgumentValidateTest.php
index 1f60df20d90c9f43eeb2b689c971d2141ee76e04..3365bd89197ac4a882b6fbc50266238abf4ba46b 100644
--- a/core/modules/user/src/Tests/Views/ArgumentValidateTest.php
+++ b/core/modules/user/src/Tests/Views/ArgumentValidateTest.php
@@ -36,7 +36,7 @@ protected function setUp() {
   /**
    * Tests the User (ID) argument validator.
    */
-  function testArgumentValidateUserUid() {
+  public function testArgumentValidateUserUid() {
     $account = $this->account;
 
     $view = Views::getView('test_view_argument_validate_user');
diff --git a/core/modules/user/tests/src/Functional/UserDeleteTest.php b/core/modules/user/tests/src/Functional/UserDeleteTest.php
index abfb616208065076f3d58fa06ce1420c43e7d2c3..5803a049aaa67e7cc1c63ebceaddd23f762628d0 100644
--- a/core/modules/user/tests/src/Functional/UserDeleteTest.php
+++ b/core/modules/user/tests/src/Functional/UserDeleteTest.php
@@ -15,7 +15,7 @@ class UserDeleteTest extends BrowserTestBase {
   /**
    * Test deleting multiple users.
    */
-  function testUserDeleteMultiple() {
+  public function testUserDeleteMultiple() {
     // Create a few users with permissions, so roles will be created.
     $user_a = $this->drupalCreateUser(['access user profiles']);
     $user_b = $this->drupalCreateUser(['access user profiles']);
diff --git a/core/modules/user/tests/src/Functional/UserEditedOwnAccountTest.php b/core/modules/user/tests/src/Functional/UserEditedOwnAccountTest.php
index 29e9a17b2a595434dcee19154d38d923a7115dc8..a6f4bede591cd29617bf9ce312af297d07bcfd2a 100644
--- a/core/modules/user/tests/src/Functional/UserEditedOwnAccountTest.php
+++ b/core/modules/user/tests/src/Functional/UserEditedOwnAccountTest.php
@@ -18,7 +18,7 @@ class UserEditedOwnAccountTest extends BrowserTestBase {
    */
   public static $modules = ['user_form_test'];
 
-  function testUserEditedOwnAccount() {
+  public function testUserEditedOwnAccount() {
     // Change account setting 'Who can register accounts?' to Administrators
     // only.
     $this->config('user.settings')->set('register', USER_REGISTER_ADMINISTRATORS_ONLY)->save();
diff --git a/core/modules/user/tests/src/Functional/UserEntityCallbacksTest.php b/core/modules/user/tests/src/Functional/UserEntityCallbacksTest.php
index 5b5a34e4a3f23d8300e42188e3df933fe729c7e0..feea805afd1146bf3e3bb445db837a188011a688 100644
--- a/core/modules/user/tests/src/Functional/UserEntityCallbacksTest.php
+++ b/core/modules/user/tests/src/Functional/UserEntityCallbacksTest.php
@@ -44,7 +44,7 @@ protected function setUp() {
   /**
    * Test label callback.
    */
-  function testLabelCallback() {
+  public function testLabelCallback() {
     $this->assertEqual($this->account->label(), $this->account->getUsername(), 'The username should be used as label');
 
     // Setup a random anonymous name to be sure the name is used.
diff --git a/core/modules/user/tests/src/Functional/UserLanguageTest.php b/core/modules/user/tests/src/Functional/UserLanguageTest.php
index fcdceb8a3bec85a2cb375ee24296373e9140ac63..0e6c0f1a75db0836329b064a2e04fc0df25f1fd8 100644
--- a/core/modules/user/tests/src/Functional/UserLanguageTest.php
+++ b/core/modules/user/tests/src/Functional/UserLanguageTest.php
@@ -22,7 +22,7 @@ class UserLanguageTest extends BrowserTestBase {
   /**
    * Test if user can change their default language.
    */
-  function testUserLanguageConfiguration() {
+  public function testUserLanguageConfiguration() {
     // User to add and remove language.
     $admin_user = $this->drupalCreateUser(['administer languages', 'access administration pages']);
     // User to change their default language.
diff --git a/core/modules/user/tests/src/Functional/UserRolesAssignmentTest.php b/core/modules/user/tests/src/Functional/UserRolesAssignmentTest.php
index 309dee2da1d2c2444721b8b21b8f18e2a4832ff5..fc8958c097a029f0f47f5d7b485c092307c3a0ba 100644
--- a/core/modules/user/tests/src/Functional/UserRolesAssignmentTest.php
+++ b/core/modules/user/tests/src/Functional/UserRolesAssignmentTest.php
@@ -21,7 +21,7 @@ protected function setUp() {
    * Tests that a user can be assigned a role and that the role can be removed
    * again.
    */
-  function testAssignAndRemoveRole()  {
+  public function testAssignAndRemoveRole()  {
     $rid = $this->drupalCreateRole(['administer users']);
     $account = $this->drupalCreateUser();
 
@@ -42,7 +42,7 @@ function testAssignAndRemoveRole()  {
    * Tests that when creating a user the role can be assigned. And that it can
    * be removed again.
    */
-  function testCreateUserWithRole() {
+  public function testCreateUserWithRole() {
     $rid = $this->drupalCreateRole(['administer users']);
     // Create a new user and add the role at the same time.
     $edit = [
diff --git a/core/modules/user/tests/src/Functional/UserSaveTest.php b/core/modules/user/tests/src/Functional/UserSaveTest.php
index 3428749812866e24cb7fa30580860dd0c831d508..c693b39cefeee886351f99f8e45ca45cb387a04e 100644
--- a/core/modules/user/tests/src/Functional/UserSaveTest.php
+++ b/core/modules/user/tests/src/Functional/UserSaveTest.php
@@ -15,7 +15,7 @@ class UserSaveTest extends BrowserTestBase {
   /**
    * Test creating a user with arbitrary uid.
    */
-  function testUserImport() {
+  public function testUserImport() {
     // User ID must be a number that is not in the database.
 
     $uids = \Drupal::entityManager()->getStorage('user')->getQuery()
@@ -48,7 +48,7 @@ function testUserImport() {
   /**
    * Ensures that an existing password is unset after the user was saved.
    */
-  function testExistingPasswordRemoval() {
+  public function testExistingPasswordRemoval() {
     /** @var \Drupal\user\Entity\User $user */
     $user = User::create(['name' => $this->randomMachineName()]);
     $user->save();
diff --git a/core/modules/user/tests/src/Functional/UserSearchTest.php b/core/modules/user/tests/src/Functional/UserSearchTest.php
index 7eafb4af8e90fbf1e7239c9431b5ff86ee6d5113..8ce0319bf623b46580b08662656e35a295893e88 100644
--- a/core/modules/user/tests/src/Functional/UserSearchTest.php
+++ b/core/modules/user/tests/src/Functional/UserSearchTest.php
@@ -19,7 +19,7 @@ class UserSearchTest extends BrowserTestBase {
    */
   public static $modules = ['search'];
 
-  function testUserSearch() {
+  public function testUserSearch() {
     // Verify that a user without 'administer users' permission cannot search
     // for users by email address. Additionally, ensure that the username has a
     // plus sign to ensure searching works with that.
diff --git a/core/modules/user/tests/src/Functional/UserTokenReplaceTest.php b/core/modules/user/tests/src/Functional/UserTokenReplaceTest.php
index d563d363411d5a006a14b6bb5ebbd534d5001fb9..e272b60732524716751149708d8681e4b4008764 100644
--- a/core/modules/user/tests/src/Functional/UserTokenReplaceTest.php
+++ b/core/modules/user/tests/src/Functional/UserTokenReplaceTest.php
@@ -34,7 +34,7 @@ protected function setUp() {
   /**
    * Creates a user, then tests the tokens generated from it.
    */
-  function testUserTokenReplacement() {
+  public function testUserTokenReplacement() {
     $token_service = \Drupal::token();
     $language_interface = \Drupal::languageManager()->getCurrentLanguage();
     $url_options = [
diff --git a/core/modules/user/tests/src/Kernel/UserAccountFormFieldsTest.php b/core/modules/user/tests/src/Kernel/UserAccountFormFieldsTest.php
index e4367a051555e7744a865515690d8eb18edc7dbc..643302192c72dba8a211e0237998f3e24e8dcb63 100644
--- a/core/modules/user/tests/src/Kernel/UserAccountFormFieldsTest.php
+++ b/core/modules/user/tests/src/Kernel/UserAccountFormFieldsTest.php
@@ -23,7 +23,7 @@ class UserAccountFormFieldsTest extends KernelTestBase {
   /**
    * Tests the root user account form section in the "Configure site" form.
    */
-  function testInstallConfigureForm() {
+  public function testInstallConfigureForm() {
     require_once \Drupal::root() . '/core/includes/install.core.inc';
     require_once \Drupal::root() . '/core/includes/install.inc';
     $install_state = install_state_defaults();
@@ -45,7 +45,7 @@ function testInstallConfigureForm() {
   /**
    * Tests the user registration form.
    */
-  function testUserRegistrationForm() {
+  public function testUserRegistrationForm() {
     // Install default configuration; required for AccountFormController.
     $this->installConfig(['user']);
 
@@ -69,7 +69,7 @@ function testUserRegistrationForm() {
   /**
    * Tests the user edit form.
    */
-  function testUserEditForm() {
+  public function testUserEditForm() {
     // Install default configuration; required for AccountFormController.
     $this->installConfig(['user']);
 
diff --git a/core/modules/user/tests/src/Kernel/UserActionConfigSchemaTest.php b/core/modules/user/tests/src/Kernel/UserActionConfigSchemaTest.php
index c405ad97aec672ccb3e0e43162e8b9fe9e2eaf76..dfafb1d5368be79048c892e4174876d0f1cd1449 100644
--- a/core/modules/user/tests/src/Kernel/UserActionConfigSchemaTest.php
+++ b/core/modules/user/tests/src/Kernel/UserActionConfigSchemaTest.php
@@ -26,7 +26,7 @@ class UserActionConfigSchemaTest extends KernelTestBase {
   /**
    * Tests whether the user action config schema are valid.
    */
-  function testValidUserActionConfigSchema() {
+  public function testValidUserActionConfigSchema() {
     $rid = strtolower($this->randomMachineName(8));
     Role::create(['id' => $rid])->save();
 
diff --git a/core/modules/user/tests/src/Kernel/UserEntityReferenceTest.php b/core/modules/user/tests/src/Kernel/UserEntityReferenceTest.php
index 14dc7ada24282aeb494f42f95352b443d4006e6e..159a699cf57a74843b69e6b724f54a4a82656b36 100644
--- a/core/modules/user/tests/src/Kernel/UserEntityReferenceTest.php
+++ b/core/modules/user/tests/src/Kernel/UserEntityReferenceTest.php
@@ -54,7 +54,7 @@ protected function setUp() {
   /**
    * Tests user selection by roles.
    */
-  function testUserSelectionByRole() {
+  public function testUserSelectionByRole() {
     $field_definition = FieldConfig::loadByName('user', 'user', 'user_reference');
     $handler_settings = $field_definition->getSetting('handler_settings');
     $handler_settings['filter']['role'] = [
diff --git a/core/modules/user/tests/src/Kernel/UserFieldsTest.php b/core/modules/user/tests/src/Kernel/UserFieldsTest.php
index 18f8f3b365a7394da060cec90c4141eb55fbf6be..672ddb065e033e40b2c1f6e767bbe9f2708ac4a7 100644
--- a/core/modules/user/tests/src/Kernel/UserFieldsTest.php
+++ b/core/modules/user/tests/src/Kernel/UserFieldsTest.php
@@ -36,7 +36,7 @@ protected function setUp() {
   /**
    * Tests account's available fields.
    */
-  function testUserFields() {
+  public function testUserFields() {
     // Create the user to test the user fields.
     $user = User::create([
       'name' => 'foobar',
diff --git a/core/modules/user/tests/src/Kernel/UserSaveStatusTest.php b/core/modules/user/tests/src/Kernel/UserSaveStatusTest.php
index 0ad1bde38cb92113057cc4c1ae529b0f12a01fb4..17364c059de297bbf88853154e55e7d450b94150 100644
--- a/core/modules/user/tests/src/Kernel/UserSaveStatusTest.php
+++ b/core/modules/user/tests/src/Kernel/UserSaveStatusTest.php
@@ -27,7 +27,7 @@ protected function setUp() {
   /**
    * Test SAVED_NEW and SAVED_UPDATED statuses for user entity type.
    */
-  function testUserSaveStatus() {
+  public function testUserSaveStatus() {
     // Create a new user.
     $values = [
       'uid' => 1,
diff --git a/core/modules/user/tests/src/Kernel/UserValidationTest.php b/core/modules/user/tests/src/Kernel/UserValidationTest.php
index 9be1fd0d627f593a8f011c52b72a8d2435252d31..f8be028f0e53150b5ccf8e9096883464e388b73b 100644
--- a/core/modules/user/tests/src/Kernel/UserValidationTest.php
+++ b/core/modules/user/tests/src/Kernel/UserValidationTest.php
@@ -39,7 +39,7 @@ protected function setUp() {
   /**
    * Tests user name validation.
    */
-  function testUsernames() {
+  public function testUsernames() {
     $test_cases = [ // '<username>' => array('<description>', 'assert<testName>'),
       'foo'                    => ['Valid username', 'assertNull'],
       'FOO'                    => ['Valid username', 'assertNull'],
@@ -69,7 +69,7 @@ function testUsernames() {
   /**
    * Runs entity validation checks.
    */
-  function testValidation() {
+  public function testValidation() {
     $user = User::create([
       'name' => 'test',
       'mail' => 'test@example.com',
diff --git a/core/modules/views/src/Analyzer.php b/core/modules/views/src/Analyzer.php
index 3688fdaf43b0b67743e94c4f4bc9f605b32c1638..a5de193deda969b2858820d8bdbd3cf3bb9ac4dc 100644
--- a/core/modules/views/src/Analyzer.php
+++ b/core/modules/views/src/Analyzer.php
@@ -115,7 +115,7 @@ public function formatMessages(array $messages) {
    * @return array
    *   A single formatted message, consisting of a key message and a key type.
    */
-  static function formatMessage($message, $type = 'error') {
+  public static function formatMessage($message, $type = 'error') {
     return ['message' => $message, 'type' => $type];
   }
 
diff --git a/core/modules/views/src/EntityViewsData.php b/core/modules/views/src/EntityViewsData.php
index 1a65b1c8a26e0671cdf61be030587d0d4fbcaced..2ba2086ac10397f529244f4a0afdd50683f71725 100644
--- a/core/modules/views/src/EntityViewsData.php
+++ b/core/modules/views/src/EntityViewsData.php
@@ -78,7 +78,7 @@ class EntityViewsData implements EntityHandlerInterface, EntityViewsDataInterfac
    * @param \Drupal\Core\StringTranslation\TranslationInterface $translation_manager
    *   The translation manager.
    */
-  function __construct(EntityTypeInterface $entity_type, SqlEntityStorageInterface $storage_controller, EntityManagerInterface $entity_manager, ModuleHandlerInterface $module_handler, TranslationInterface $translation_manager) {
+  public function __construct(EntityTypeInterface $entity_type, SqlEntityStorageInterface $storage_controller, EntityManagerInterface $entity_manager, ModuleHandlerInterface $module_handler, TranslationInterface $translation_manager) {
     $this->entityType = $entity_type;
     $this->entityManager = $entity_manager;
     $this->storage = $storage_controller;
diff --git a/core/modules/views/src/ManyToOneHelper.php b/core/modules/views/src/ManyToOneHelper.php
index 51d2b4f48148f98113afab78f434da74c4a24b78..cb2e5754a818f3d48de9f411cf1b8ee3f1141473 100644
--- a/core/modules/views/src/ManyToOneHelper.php
+++ b/core/modules/views/src/ManyToOneHelper.php
@@ -21,7 +21,7 @@
  */
 class ManyToOneHelper {
 
-  function __construct($handler) {
+  public function __construct($handler) {
     $this->handler = $handler;
   }
 
diff --git a/core/modules/views/src/Plugin/views/area/HTTPStatusCode.php b/core/modules/views/src/Plugin/views/area/HTTPStatusCode.php
index d9b81454125119ce922de06e68ee5e1c81fdd488..6cf6ba2241974a980a670dd3951fa980e7072a4c 100644
--- a/core/modules/views/src/Plugin/views/area/HTTPStatusCode.php
+++ b/core/modules/views/src/Plugin/views/area/HTTPStatusCode.php
@@ -57,7 +57,7 @@ public function buildOptionsForm(&$form, FormStateInterface $form_state) {
   /**
    * {@inheritdoc}
    */
-  function render($empty = FALSE) {
+  public function render($empty = FALSE) {
     if (!$empty || !empty($this->options['empty'])) {
       $build['#attached']['http_header'][] = ['Status', $this->options['status_code']];
       return $build;
diff --git a/core/modules/views/src/Plugin/views/argument/ArgumentPluginBase.php b/core/modules/views/src/Plugin/views/argument/ArgumentPluginBase.php
index 6a9632f4eaa6e8de396cc3ffbd7426961576206a..3f145195a3a51adf02b1faa6a8df641100ee8f03 100644
--- a/core/modules/views/src/Plugin/views/argument/ArgumentPluginBase.php
+++ b/core/modules/views/src/Plugin/views/argument/ArgumentPluginBase.php
@@ -775,7 +775,7 @@ protected function defaultDefault() {
   /**
    * Determine if the argument is set to provide a default argument.
    */
-  function hasDefaultArgument() {
+  public function hasDefaultArgument() {
     $info = $this->defaultActions($this->options['default_action']);
     return !empty($info['has default argument']);
   }
@@ -960,7 +960,7 @@ public function query($group_by = FALSE) {
    *
    * This usually needs to be overridden to provide a proper title.
    */
-  function title() {
+  public function title() {
     return $this->argument;
   }
 
diff --git a/core/modules/views/src/Plugin/views/argument/DayDate.php b/core/modules/views/src/Plugin/views/argument/DayDate.php
index 187be041d4335e1470105f1aabc66666a142e330..42bd81743c2971aa8683556fb8258e800bd5337f 100644
--- a/core/modules/views/src/Plugin/views/argument/DayDate.php
+++ b/core/modules/views/src/Plugin/views/argument/DayDate.php
@@ -31,7 +31,7 @@ public function summaryName($data) {
   /**
    * Provide a link to the next level of the view
    */
-  function title() {
+  public function title() {
     $day = str_pad($this->argument, 2, '0', STR_PAD_LEFT);
     return format_date(strtotime("2005" . "05" . $day . " 00:00:00 UTC"), 'custom', $this->format, 'UTC');
   }
diff --git a/core/modules/views/src/Plugin/views/argument/FullDate.php b/core/modules/views/src/Plugin/views/argument/FullDate.php
index 84bcd8cfa634cd876aee82a3b22bec2f3af0b13a..ca4ca9f60d120428b4b2334818878fe01b43a8c1 100644
--- a/core/modules/views/src/Plugin/views/argument/FullDate.php
+++ b/core/modules/views/src/Plugin/views/argument/FullDate.php
@@ -30,7 +30,7 @@ public function summaryName($data) {
   /**
    * Provide a link to the next level of the view
    */
-  function title() {
+  public function title() {
     return format_date(strtotime($this->argument . " 00:00:00 UTC"), 'custom', $this->format, 'UTC');
   }
 
diff --git a/core/modules/views/src/Plugin/views/argument/LanguageArgument.php b/core/modules/views/src/Plugin/views/argument/LanguageArgument.php
index ef9e152026e138779ccbfbbfd4401ff9e71a29dd..2eb1870ed140540169114f6654a117936cf891e0 100644
--- a/core/modules/views/src/Plugin/views/argument/LanguageArgument.php
+++ b/core/modules/views/src/Plugin/views/argument/LanguageArgument.php
@@ -26,7 +26,7 @@ public function summaryName($data) {
    * Gets the user friendly version of the language name for display as a
    * title placeholder.
    */
-  function title() {
+  public function title() {
     return $this->language($this->argument);
   }
 
@@ -40,7 +40,7 @@ function title() {
    *   The translated name for the language, or "Unknown language" if the
    *   language was not found.
    */
-  function language($langcode) {
+  public function language($langcode) {
     $languages = $this->listLanguages();
     return isset($languages[$langcode]) ? $languages[$langcode] : $this->t('Unknown language');
   }
diff --git a/core/modules/views/src/Plugin/views/argument/ManyToOne.php b/core/modules/views/src/Plugin/views/argument/ManyToOne.php
index f0bd9ba68e718988f6b0475fe5ef6173427f082f..680c19f2aa2467baaf7af07c9e335153cec4c272 100644
--- a/core/modules/views/src/Plugin/views/argument/ManyToOne.php
+++ b/core/modules/views/src/Plugin/views/argument/ManyToOne.php
@@ -126,7 +126,7 @@ public function query($group_by = FALSE) {
     $this->helper->addFilter();
   }
 
-  function title() {
+  public function title() {
     if (!$this->argument) {
       return !empty($this->definition['empty field name']) ? $this->definition['empty field name'] : $this->t('Uncategorized');
     }
diff --git a/core/modules/views/src/Plugin/views/argument/MonthDate.php b/core/modules/views/src/Plugin/views/argument/MonthDate.php
index c1b493bdb5917fe88531f3637bb5fca0fdd13082..17ce1b987b55ba50b35bfc2e7ae6d68628c5d9d3 100644
--- a/core/modules/views/src/Plugin/views/argument/MonthDate.php
+++ b/core/modules/views/src/Plugin/views/argument/MonthDate.php
@@ -30,7 +30,7 @@ public function summaryName($data) {
   /**
    * Provide a link to the next level of the view
    */
-  function title() {
+  public function title() {
     $month = str_pad($this->argument, 2, '0', STR_PAD_LEFT);
     return format_date(strtotime("2005" . $month . "15" . " 00:00:00 UTC"), 'custom', $this->format, 'UTC');
   }
diff --git a/core/modules/views/src/Plugin/views/argument/NumericArgument.php b/core/modules/views/src/Plugin/views/argument/NumericArgument.php
index 188d8e9bd6833bf3f0a0c3d6be2cdeee8ffa276c..5cace4dbc3de026b492c8bb4903d7ebc272b92dd 100644
--- a/core/modules/views/src/Plugin/views/argument/NumericArgument.php
+++ b/core/modules/views/src/Plugin/views/argument/NumericArgument.php
@@ -57,7 +57,7 @@ public function buildOptionsForm(&$form, FormStateInterface $form_state) {
     ];
   }
 
-  function title() {
+  public function title() {
     if (!$this->argument) {
       return !empty($this->definition['empty field name']) ? $this->definition['empty field name'] : $this->t('Uncategorized');
     }
diff --git a/core/modules/views/src/Plugin/views/argument/StringArgument.php b/core/modules/views/src/Plugin/views/argument/StringArgument.php
index 0948c6764611dd48de2e6189a249b57935c1ba4c..6058d6618b6d1e9bc8a51d907b46daa18ae0d576 100644
--- a/core/modules/views/src/Plugin/views/argument/StringArgument.php
+++ b/core/modules/views/src/Plugin/views/argument/StringArgument.php
@@ -278,7 +278,7 @@ public function getSortName() {
     return $this->t('Alphabetical', [], ['context' => 'Sort order']);
   }
 
-  function title() {
+  public function title() {
     // Support case-insensitive title comparisons for PostgreSQL by converting
     // the title to lowercase.
     if ($this->options['case'] != 'none' && Database::getConnection()->databaseType() == 'pgsql') {
diff --git a/core/modules/views/src/Plugin/views/argument/YearMonthDate.php b/core/modules/views/src/Plugin/views/argument/YearMonthDate.php
index 8185513ef9f9c90f59fa891f8161773f772e0f79..1e1effe1c73b0251c2e595d9632134545e5611ba 100644
--- a/core/modules/views/src/Plugin/views/argument/YearMonthDate.php
+++ b/core/modules/views/src/Plugin/views/argument/YearMonthDate.php
@@ -30,7 +30,7 @@ public function summaryName($data) {
   /**
    * Provide a link to the next level of the view
    */
-  function title() {
+  public function title() {
     return format_date(strtotime($this->argument . "15" . " 00:00:00 UTC"), 'custom', $this->format, 'UTC');
   }
 
diff --git a/core/modules/views/src/Plugin/views/display/DisplayPluginBase.php b/core/modules/views/src/Plugin/views/display/DisplayPluginBase.php
index c16ee3b65febb1d252acb5f1d1a2873ba7251502..3744fea2bf4abf4deea3a8218a985378d51f0e23 100644
--- a/core/modules/views/src/Plugin/views/display/DisplayPluginBase.php
+++ b/core/modules/views/src/Plugin/views/display/DisplayPluginBase.php
@@ -2392,7 +2392,7 @@ public static function buildBasicRenderable($view_id, $display_id, array $args =
   /**
    * {@inheritdoc}
    */
-  function preview() {
+  public function preview() {
     return $this->view->render();
   }
 
diff --git a/core/modules/views/src/Plugin/views/display/DisplayPluginInterface.php b/core/modules/views/src/Plugin/views/display/DisplayPluginInterface.php
index d3b4c79b6597e1d09c1b2d5ab866644e428ba7a4..f8630af08fba67d890cd0f0ef1dfbc0521473c60 100644
--- a/core/modules/views/src/Plugin/views/display/DisplayPluginInterface.php
+++ b/core/modules/views/src/Plugin/views/display/DisplayPluginInterface.php
@@ -497,7 +497,7 @@ public function buildRenderable(array $args = [], $cache = TRUE);
    *
    * Also might be used for some other AJAXy reason.
    */
-  function preview();
+  public function preview();
 
   /**
    * Returns the display type that this display requires.
diff --git a/core/modules/views/src/Plugin/views/field/EntityField.php b/core/modules/views/src/Plugin/views/field/EntityField.php
index 6a0c762191f42ee51113992aa62a54b2cfba1884..5ee05a24d57bd9c85889fb1c81375fe03db73ed1 100644
--- a/core/modules/views/src/Plugin/views/field/EntityField.php
+++ b/core/modules/views/src/Plugin/views/field/EntityField.php
@@ -263,7 +263,7 @@ public function query($use_groupby = FALSE) {
   /**
    * Determine if the field table should be added to the query.
    */
-  function add_field_table($use_groupby) {
+  public function add_field_table($use_groupby) {
     // Grouping is enabled.
     if ($use_groupby) {
       return TRUE;
@@ -497,7 +497,7 @@ public function submitFormCalculateOptions(array $options, array $form_state_opt
   /**
    * Provide options for multiple value fields.
    */
-  function multiple_options_form(&$form, FormStateInterface $form_state) {
+  public function multiple_options_form(&$form, FormStateInterface $form_state) {
     $field = $this->getFieldDefinition();
 
     $form['multiple_field_settings'] = [
@@ -906,7 +906,7 @@ protected function createEntityForGroupBy(EntityInterface $entity, ResultRow $ro
     return $processed_entity;
   }
 
-  function render_item($count, $item) {
+  public function render_item($count, $item) {
     return render($item['rendered']);
   }
 
diff --git a/core/modules/views/src/Plugin/views/field/FieldHandlerInterface.php b/core/modules/views/src/Plugin/views/field/FieldHandlerInterface.php
index d7389c937d18bb1b3e45956def9dbc29e00cf764..2562b954c05fc8d26d1c6aed308a41369d5145d6 100644
--- a/core/modules/views/src/Plugin/views/field/FieldHandlerInterface.php
+++ b/core/modules/views/src/Plugin/views/field/FieldHandlerInterface.php
@@ -265,6 +265,6 @@ public function getRenderTokens($item);
    *   is safe it will be wrapped in an object that implements
    *   MarkupInterface. If it is empty or unsafe it will be a string.
    */
-  function theme(ResultRow $values);
+  public function theme(ResultRow $values);
 
 }
diff --git a/core/modules/views/src/Plugin/views/field/FieldPluginBase.php b/core/modules/views/src/Plugin/views/field/FieldPluginBase.php
index d9485407716cf250b59d5267feb6b3492d5d1e93..48c59ef7093acecf82a45fc38656f5afd6ac018b 100644
--- a/core/modules/views/src/Plugin/views/field/FieldPluginBase.php
+++ b/core/modules/views/src/Plugin/views/field/FieldPluginBase.php
@@ -1725,7 +1725,7 @@ protected function documentSelfTokens(&$tokens) { }
   /**
    * {@inheritdoc}
    */
-  function theme(ResultRow $values) {
+  public function theme(ResultRow $values) {
     $renderer = $this->getRenderer();
     $build = [
       '#theme' => $this->themeFunctions(),
diff --git a/core/modules/views/src/Plugin/views/filter/Combine.php b/core/modules/views/src/Plugin/views/filter/Combine.php
index 0396ff47ec47ce9326832d0eaf0e794ec6d324eb..f8ea624e1eaf1c33a29d1d8cabfd1504c2a19fff 100644
--- a/core/modules/views/src/Plugin/views/filter/Combine.php
+++ b/core/modules/views/src/Plugin/views/filter/Combine.php
@@ -128,7 +128,7 @@ public function validate() {
    * By default things like opEqual uses add_where, that doesn't support
    * complex expressions, so override opEqual (and all operators below).
    */
-  function opEqual($expression) {
+  public function opEqual($expression) {
     $placeholder = $this->placeholder();
     $operator = $this->operator();
     $this->query->addWhereExpression($this->options['group'], "$expression $operator $placeholder", [$placeholder => $this->value]);
diff --git a/core/modules/views/src/Plugin/views/filter/InOperator.php b/core/modules/views/src/Plugin/views/filter/InOperator.php
index df01536824f12a225e19d9c4aff2632ed5b3447e..c2d5bef2db7ffcf2df3a1fc3397f9458779059f7 100644
--- a/core/modules/views/src/Plugin/views/filter/InOperator.php
+++ b/core/modules/views/src/Plugin/views/filter/InOperator.php
@@ -107,7 +107,7 @@ protected function defineOptions() {
    * to add or remove functionality by overriding this function and
    * adding/removing items from this array.
    */
-  function operators() {
+  public function operators() {
     $operators = [
       'in' => [
         'title' => $this->t('Is one of'),
diff --git a/core/modules/views/src/Plugin/views/filter/ManyToOne.php b/core/modules/views/src/Plugin/views/filter/ManyToOne.php
index 645dc819c2ea8482963a65c00fecbf436303a3dc..e678dee82f3f9c38ee6be2f6059bc4a79ec477f4 100644
--- a/core/modules/views/src/Plugin/views/filter/ManyToOne.php
+++ b/core/modules/views/src/Plugin/views/filter/ManyToOne.php
@@ -54,7 +54,7 @@ protected function defineOptions() {
     return $options;
   }
 
-  function operators() {
+  public function operators() {
     $operators = [
       'or' => [
         'title' => $this->t('Is one of'),
diff --git a/core/modules/views/src/Plugin/views/filter/NumericFilter.php b/core/modules/views/src/Plugin/views/filter/NumericFilter.php
index 347c9f2cc472af2cf1d04aad306f5bc2f2d329cd..7f687a14f4d654a6c0b36b92d123308d85a071f1 100644
--- a/core/modules/views/src/Plugin/views/filter/NumericFilter.php
+++ b/core/modules/views/src/Plugin/views/filter/NumericFilter.php
@@ -29,7 +29,7 @@ protected function defineOptions() {
     return $options;
   }
 
-  function operators() {
+  public function operators() {
     $operators = [
       '<' => [
         'title' => $this->t('Is less than'),
diff --git a/core/modules/views/src/Plugin/views/filter/StringFilter.php b/core/modules/views/src/Plugin/views/filter/StringFilter.php
index d55fe69d6880e4cb7b1fd04250ccddad53c7d7d4..733db53ac7026bca694913a18fb90d166af5d043 100644
--- a/core/modules/views/src/Plugin/views/filter/StringFilter.php
+++ b/core/modules/views/src/Plugin/views/filter/StringFilter.php
@@ -36,7 +36,7 @@ protected function defineOptions() {
    * to add or remove functionality by overriding this function and
    * adding/removing items from this array.
    */
-  function operators() {
+  public function operators() {
     $operators = [
       '=' => [
         'title' => $this->t('Is equal to'),
@@ -236,7 +236,7 @@ protected function valueForm(&$form, FormStateInterface $form_state) {
     }
   }
 
-  function operator() {
+  public function operator() {
     return $this->operator == '=' ? 'LIKE' : 'NOT LIKE';
   }
 
diff --git a/core/modules/views/src/Plugin/views/query/QueryPluginBase.php b/core/modules/views/src/Plugin/views/query/QueryPluginBase.php
index 3f9535e26093a52314845ee7915e3b7a3f16fa0c..a2c2e105b7d477eaeb8adbdace1d7c85d49feca3 100644
--- a/core/modules/views/src/Plugin/views/query/QueryPluginBase.php
+++ b/core/modules/views/src/Plugin/views/query/QueryPluginBase.php
@@ -199,7 +199,7 @@ public function setGroupOperator($type = 'AND') {
    *
    * Query plugins that don't support entities can leave the method empty.
    */
-  function loadEntities(&$results) {}
+  public function loadEntities(&$results) {}
 
   /**
    * Returns a Unix timestamp to database native timestamp expression.
diff --git a/core/modules/views/src/Plugin/views/row/RowPluginBase.php b/core/modules/views/src/Plugin/views/row/RowPluginBase.php
index fd2b96c32261eb58f6920e172d8f07a29e07cc29..1cc3f79a1ea1cafb1cdffb69d3f8879cd84b0307 100644
--- a/core/modules/views/src/Plugin/views/row/RowPluginBase.php
+++ b/core/modules/views/src/Plugin/views/row/RowPluginBase.php
@@ -54,7 +54,7 @@ abstract class RowPluginBase extends PluginBase {
    *
    * @return bool
    */
-  function usesFields() {
+  public function usesFields() {
     return $this->usesFields;
   }
 
diff --git a/core/modules/views/src/Plugin/views/style/StylePluginBase.php b/core/modules/views/src/Plugin/views/style/StylePluginBase.php
index 1131b6af0d06926522ed11bdc3b462c1464b7eb9..364c9f83798d7b3da4c237399eae4c936ee65c52 100644
--- a/core/modules/views/src/Plugin/views/style/StylePluginBase.php
+++ b/core/modules/views/src/Plugin/views/style/StylePluginBase.php
@@ -144,7 +144,7 @@ public function destroy() {
    *
    * @return bool
    */
-  function usesRowPlugin() {
+  public function usesRowPlugin() {
     return $this->usesRowPlugin;
 
   }
@@ -154,7 +154,7 @@ function usesRowPlugin() {
    *
    * @return bool
    */
-  function usesRowClass() {
+  public function usesRowClass() {
     return $this->usesRowClass;
   }
 
@@ -163,7 +163,7 @@ function usesRowClass() {
    *
    * @return bool
    */
-  function usesGrouping() {
+  public function usesGrouping() {
     return $this->usesGrouping;
   }
 
@@ -172,7 +172,7 @@ function usesGrouping() {
    *
    * @return bool
    */
-  function usesFields() {
+  public function usesFields() {
     // If we use a row plugin, ask the row plugin. Chances are, we don't
     // care, it does.
     $row_uses_fields = FALSE;
diff --git a/core/modules/views/src/Tests/DefaultViewsTest.php b/core/modules/views/src/Tests/DefaultViewsTest.php
index e5349ab4d1e1a2977d74ce95b960f3885a3af94d..48e3caeb3a372ead4fed5ff5f66de28f2302b4d3 100644
--- a/core/modules/views/src/Tests/DefaultViewsTest.php
+++ b/core/modules/views/src/Tests/DefaultViewsTest.php
@@ -143,7 +143,7 @@ public function testDefaultViews() {
   /**
    * Returns a new term with random properties in vocabulary $vid.
    */
-  function createTerm($vocabulary) {
+  public function createTerm($vocabulary) {
     $filter_formats = filter_formats();
     $format = array_pop($filter_formats);
     $term = Term::create([
diff --git a/core/modules/views/src/Tests/FieldApiDataTest.php b/core/modules/views/src/Tests/FieldApiDataTest.php
index 24b2cf30e0b2b86d398868df87f9c5519ea94168..0e1569592f9f6da78570c9a0e8e42a339fdafabb 100644
--- a/core/modules/views/src/Tests/FieldApiDataTest.php
+++ b/core/modules/views/src/Tests/FieldApiDataTest.php
@@ -50,7 +50,7 @@ protected function setUp() {
    *
    * We check data structure for both node and node revision tables.
    */
-  function testViewsData() {
+  public function testViewsData() {
     $table_mapping = \Drupal::entityManager()->getStorage('node')->getTableMapping();
     $field_storage = $this->fieldStorages[0];
     $current_table = $table_mapping->getDedicatedDataTableName($field_storage);
diff --git a/core/modules/views/src/Tests/Handler/ArgumentStringTest.php b/core/modules/views/src/Tests/Handler/ArgumentStringTest.php
index 9d83fad572fb617be4b9710057b9efa9ec2111ca..0682892e89570cea042976a7f055a554cf1bbca7 100644
--- a/core/modules/views/src/Tests/Handler/ArgumentStringTest.php
+++ b/core/modules/views/src/Tests/Handler/ArgumentStringTest.php
@@ -28,7 +28,7 @@ class ArgumentStringTest extends HandlerTestBase {
   /**
    * Tests the glossary feature.
    */
-  function testGlossary() {
+  public function testGlossary() {
     // Setup some nodes, one with a, two with b and three with c.
     $counter = 1;
     foreach (['a', 'b', 'c'] as $char) {
diff --git a/core/modules/views/src/Tests/Handler/FieldEntityOperationsTest.php b/core/modules/views/src/Tests/Handler/FieldEntityOperationsTest.php
index 57544b5c66f460034b1e72098c9deab6e2a1c3a8..7efd1d7414491ae5859b129b1d42d24fffc26557 100644
--- a/core/modules/views/src/Tests/Handler/FieldEntityOperationsTest.php
+++ b/core/modules/views/src/Tests/Handler/FieldEntityOperationsTest.php
@@ -27,7 +27,7 @@ class FieldEntityOperationsTest extends HandlerTestBase {
    */
   public static $modules = ['node', 'language', 'views_ui'];
 
-  function setUp() {
+  public function setUp() {
     parent::setUp();
 
     // Create Article content type.
diff --git a/core/modules/views/src/Tests/Plugin/AccessTest.php b/core/modules/views/src/Tests/Plugin/AccessTest.php
index 2278f6771c8ecec1cb42df24527782b3a91238bc..7a4eb1a5b37643047d49c2c4d0219b95a506efb5 100644
--- a/core/modules/views/src/Tests/Plugin/AccessTest.php
+++ b/core/modules/views/src/Tests/Plugin/AccessTest.php
@@ -61,7 +61,7 @@ protected function setUp() {
   /**
    * Tests none access plugin.
    */
-  function testAccessNone() {
+  public function testAccessNone() {
     $view = Views::getView('test_access_none');
     $view->setDisplay();
 
@@ -78,7 +78,7 @@ function testAccessNone() {
    *
    * @see \Drupal\views_test\Plugin\views\access\StaticTest
    */
-  function testStaticAccessPlugin() {
+  public function testStaticAccessPlugin() {
     $view = Views::getView('test_access_static');
     $view->setDisplay();
 
diff --git a/core/modules/views/src/Tests/Plugin/NumericFormatPluralTest.php b/core/modules/views/src/Tests/Plugin/NumericFormatPluralTest.php
index 79f1922a922f177b9657ce0d3c1dc2b6f4b68d80..d463336c4182300418b903e25f8d505a3ec7e346 100644
--- a/core/modules/views/src/Tests/Plugin/NumericFormatPluralTest.php
+++ b/core/modules/views/src/Tests/Plugin/NumericFormatPluralTest.php
@@ -37,7 +37,7 @@ protected function setUp() {
   /**
    * Test plural formatting setting on a numeric views handler.
    */
-  function testNumericFormatPlural() {
+  public function testNumericFormatPlural() {
     // Create a file.
     $file = $this->createFile();
 
diff --git a/core/modules/views/src/Tests/Plugin/PagerTest.php b/core/modules/views/src/Tests/Plugin/PagerTest.php
index 907fef2a5690095c9dd1d7c9795cb58559e98ca2..6ba4c069b46052e9d476bacf934067f81289183f 100644
--- a/core/modules/views/src/Tests/Plugin/PagerTest.php
+++ b/core/modules/views/src/Tests/Plugin/PagerTest.php
@@ -285,7 +285,7 @@ public function testRenderNullPager() {
   /**
    * Test the api functions on the view object.
    */
-  function testPagerApi() {
+  public function testPagerApi() {
     $view = Views::getView('test_pager_full');
     $view->setDisplay();
     // On the first round don't initialize the pager.
diff --git a/core/modules/views/src/Tests/Plugin/StyleTest.php b/core/modules/views/src/Tests/Plugin/StyleTest.php
index 61798a6773bc9e55295003d34de61dc117a8aa5c..e059275617bd15a8fc933d0a4834bde741dca56a 100644
--- a/core/modules/views/src/Tests/Plugin/StyleTest.php
+++ b/core/modules/views/src/Tests/Plugin/StyleTest.php
@@ -87,7 +87,7 @@ public function testStyle() {
     $this->assertTrue(strpos($output, $random_text) !== FALSE, 'Make sure that the rendering of the style plugin appears in the output of the view.');
   }
 
-  function testGrouping() {
+  public function testGrouping() {
     $this->_testGrouping(FALSE);
     $this->_testGrouping(TRUE);
   }
@@ -95,7 +95,7 @@ function testGrouping() {
   /**
    * Tests the grouping features of styles.
    */
-  function _testGrouping($stripped = FALSE) {
+  public function _testGrouping($stripped = FALSE) {
     $view = Views::getView('test_view');
     $view->setDisplay();
     // Setup grouping by the job and the age field.
@@ -256,7 +256,7 @@ function _testGrouping($stripped = FALSE) {
   /**
    * Tests custom css classes.
    */
-  function testCustomRowClasses() {
+  public function testCustomRowClasses() {
     $view = Views::getView('test_view');
     $view->setDisplay();
 
diff --git a/core/modules/views/src/Tests/Wizard/BasicTest.php b/core/modules/views/src/Tests/Wizard/BasicTest.php
index e63583227f80abdd99cebdb5cb9b6744b8befffe..7394991d238b78cccc56ffa06cff1d56567fb936 100644
--- a/core/modules/views/src/Tests/Wizard/BasicTest.php
+++ b/core/modules/views/src/Tests/Wizard/BasicTest.php
@@ -20,7 +20,7 @@ protected function setUp() {
     $this->drupalPlaceBlock('page_title_block');
   }
 
-  function testViewsWizardAndListing() {
+  public function testViewsWizardAndListing() {
     $this->drupalCreateContentType(['type' => 'article']);
     $this->drupalCreateContentType(['type' => 'page']);
 
diff --git a/core/modules/views/src/Tests/Wizard/ItemsPerPageTest.php b/core/modules/views/src/Tests/Wizard/ItemsPerPageTest.php
index 500eff2563d3bdbfde85a43a05c4f2fcd5403562..58f22a8424686aecfefda2f404b1d2b3a1ced020 100644
--- a/core/modules/views/src/Tests/Wizard/ItemsPerPageTest.php
+++ b/core/modules/views/src/Tests/Wizard/ItemsPerPageTest.php
@@ -19,7 +19,7 @@ protected function setUp() {
   /**
    * Tests the number of items per page.
    */
-  function testItemsPerPage() {
+  public function testItemsPerPage() {
     $this->drupalCreateContentType(['type' => 'article']);
 
     // Create articles, each with a different creation time so that we can do a
diff --git a/core/modules/views/src/Tests/Wizard/MenuTest.php b/core/modules/views/src/Tests/Wizard/MenuTest.php
index 242065f245ef83b3b88c3d106ebecb81c27b2c18..0805de6168e5f68d5ccecf329af138451298bd96 100644
--- a/core/modules/views/src/Tests/Wizard/MenuTest.php
+++ b/core/modules/views/src/Tests/Wizard/MenuTest.php
@@ -15,7 +15,7 @@ class MenuTest extends WizardTestBase {
   /**
    * Tests the menu functionality.
    */
-  function testMenus() {
+  public function testMenus() {
     $this->drupalPlaceBlock('system_menu_block:main');
 
     // Create a view with a page display and a menu link in the Main Menu.
diff --git a/core/modules/views/src/Tests/Wizard/SortingTest.php b/core/modules/views/src/Tests/Wizard/SortingTest.php
index 545c50db4a7a6ad8484cd38cc95c495bcb0eb58b..58926aabca93d07aacde3f6b97053242071ba1e6 100644
--- a/core/modules/views/src/Tests/Wizard/SortingTest.php
+++ b/core/modules/views/src/Tests/Wizard/SortingTest.php
@@ -18,7 +18,7 @@ protected function setUp() {
   /**
    * Tests the sorting functionality.
    */
-  function testSorting() {
+  public function testSorting() {
     // Create nodes, each with a different creation time so that we can do a
     // meaningful sort.
     $this->drupalCreateContentType(['type' => 'page']);
diff --git a/core/modules/views/src/Tests/Wizard/TaggedWithTest.php b/core/modules/views/src/Tests/Wizard/TaggedWithTest.php
index d9299461993669290343900cffadeeec96f26444..f723950419890950ec2416ca1b88965596391a84 100644
--- a/core/modules/views/src/Tests/Wizard/TaggedWithTest.php
+++ b/core/modules/views/src/Tests/Wizard/TaggedWithTest.php
@@ -114,7 +114,7 @@ protected function setUp() {
   /**
    * Tests the "tagged with" functionality.
    */
-  function testTaggedWith() {
+  public function testTaggedWith() {
     // In this test we will only create nodes that have an instance of the tag
     // field.
     $node_add_path = 'node/add/' . $this->nodeTypeWithTags->id();
@@ -180,7 +180,7 @@ function testTaggedWith() {
   /**
    * Tests that the "tagged with" form element only shows for node types that support it.
    */
-  function testTaggedWithByNodeType() {
+  public function testTaggedWithByNodeType() {
     // The tagging field is associated with one of our node types only. So the
     // "tagged with" form element on the view wizard should appear on the form
     // by default (when the wizard is configured to display all content) and
diff --git a/core/modules/views/tests/src/Kernel/Handler/ArgumentNullTest.php b/core/modules/views/tests/src/Kernel/Handler/ArgumentNullTest.php
index 99fa7c8675169ca6767829f46f467b208c51ab72..933a00099f2ba72257772804283be318b493a178 100644
--- a/core/modules/views/tests/src/Kernel/Handler/ArgumentNullTest.php
+++ b/core/modules/views/tests/src/Kernel/Handler/ArgumentNullTest.php
@@ -19,7 +19,7 @@ class ArgumentNullTest extends ViewsKernelTestBase {
    */
   public static $testViews = ['test_view'];
 
-  function viewsData() {
+  public function viewsData() {
     $data = parent::viewsData();
     $data['views_test_data']['id']['argument']['id'] = 'null';
 
diff --git a/core/modules/views/tests/src/Kernel/Handler/FieldBooleanTest.php b/core/modules/views/tests/src/Kernel/Handler/FieldBooleanTest.php
index 01f5166447b75f6027c7b3fb50499aa319088a22..0690fc12cafff37a04683d0fa98f7ace1412ccbf 100644
--- a/core/modules/views/tests/src/Kernel/Handler/FieldBooleanTest.php
+++ b/core/modules/views/tests/src/Kernel/Handler/FieldBooleanTest.php
@@ -19,7 +19,7 @@ class FieldBooleanTest extends ViewsKernelTestBase {
    */
   public static $testViews = ['test_view'];
 
-  function dataSet() {
+  public function dataSet() {
     // Use default dataset but remove the age from john and paul
     $data = parent::dataSet();
     $data[0]['age'] = 0;
@@ -27,7 +27,7 @@ function dataSet() {
     return $data;
   }
 
-  function viewsData() {
+  public function viewsData() {
     $data = parent::viewsData();
     $data['views_test_data']['age']['field']['id'] = 'boolean';
     return $data;
diff --git a/core/modules/views/tests/src/Kernel/Handler/FieldCounterTest.php b/core/modules/views/tests/src/Kernel/Handler/FieldCounterTest.php
index 49d914eee45e2c579ba5b659f13cdfdcd24c4ef2..b5c52fef7727b04d2b1d107736e805414b890891 100644
--- a/core/modules/views/tests/src/Kernel/Handler/FieldCounterTest.php
+++ b/core/modules/views/tests/src/Kernel/Handler/FieldCounterTest.php
@@ -26,7 +26,7 @@ class FieldCounterTest extends ViewsKernelTestBase {
    */
   public static $testViews = ['test_view'];
 
-  function testSimple() {
+  public function testSimple() {
     $view = Views::getView('test_view');
     $view->setDisplay();
     $view->displayHandlers->get('default')->overrideOption('fields', [
@@ -87,7 +87,7 @@ function testSimple() {
   /**
    * @todo: Write tests for pager.
    */
-  function testPager() {
+  public function testPager() {
   }
 
 }
diff --git a/core/modules/views/tests/src/Kernel/Handler/FieldCustomTest.php b/core/modules/views/tests/src/Kernel/Handler/FieldCustomTest.php
index fb6e3c4db69ffcfb44296374ab6710399cb51365..599052dcbf18b0a8495c50828ac15e3f6c48c561 100644
--- a/core/modules/views/tests/src/Kernel/Handler/FieldCustomTest.php
+++ b/core/modules/views/tests/src/Kernel/Handler/FieldCustomTest.php
@@ -23,7 +23,7 @@ class FieldCustomTest extends ViewsKernelTestBase {
   /**
    * {@inheritdoc}
    */
-  function viewsData() {
+  public function viewsData() {
     $data = parent::viewsData();
     $data['views_test_data']['name']['field']['id'] = 'custom';
     return $data;
diff --git a/core/modules/views/tests/src/Kernel/Handler/FieldFileSizeTest.php b/core/modules/views/tests/src/Kernel/Handler/FieldFileSizeTest.php
index 7af6442e480a7b34b5809ed8e19963dcc8bd678a..892e82fce8c5fc9fb8560114fa4236b2e4364191 100644
--- a/core/modules/views/tests/src/Kernel/Handler/FieldFileSizeTest.php
+++ b/core/modules/views/tests/src/Kernel/Handler/FieldFileSizeTest.php
@@ -20,7 +20,7 @@ class FieldFileSizeTest extends ViewsKernelTestBase {
    */
   public static $testViews = ['test_view'];
 
-  function dataSet() {
+  public function dataSet() {
     $data = parent::dataSet();
     $data[0]['age'] = 0;
     $data[1]['age'] = 10;
@@ -30,7 +30,7 @@ function dataSet() {
     return $data;
   }
 
-  function viewsData() {
+  public function viewsData() {
     $data = parent::viewsData();
     $data['views_test_data']['age']['field']['id'] = 'file_size';
 
diff --git a/core/modules/views/tests/src/Kernel/Handler/FieldKernelTest.php b/core/modules/views/tests/src/Kernel/Handler/FieldKernelTest.php
index b5b04b00dd52fb73e72be1553e65e58a57351f7f..677a3f5e4084a59adbfee13543ee2fdfb4fa042d 100644
--- a/core/modules/views/tests/src/Kernel/Handler/FieldKernelTest.php
+++ b/core/modules/views/tests/src/Kernel/Handler/FieldKernelTest.php
@@ -412,7 +412,7 @@ public function testExclude() {
   /**
    * Tests everything related to empty output of a field.
    */
-  function testEmpty() {
+  public function testEmpty() {
     $this->_testHideIfEmpty();
     $this->_testEmptyText();
   }
@@ -423,7 +423,7 @@ function testEmpty() {
    * This tests alters the result to get easier and less coupled results. It is
    * important that assertIdentical() is used in this test since in PHP 0 == ''.
    */
-  function _testHideIfEmpty() {
+  public function _testHideIfEmpty() {
     /** @var \Drupal\Core\Render\RendererInterface $renderer */
     $renderer = \Drupal::service('renderer');
 
@@ -704,7 +704,7 @@ function _testHideIfEmpty() {
   /**
    * Tests the usage of the empty text.
    */
-  function _testEmptyText() {
+  public function _testEmptyText() {
     /** @var \Drupal\Core\Render\RendererInterface $renderer */
     $renderer = \Drupal::service('renderer');
 
@@ -754,7 +754,7 @@ function _testEmptyText() {
   /**
    * Tests views_handler_field::isValueEmpty().
    */
-  function testIsValueEmpty() {
+  public function testIsValueEmpty() {
     $view = Views::getView('test_view');
     $view->initHandlers();
     $field = $view->field['name'];
diff --git a/core/modules/views/tests/src/Kernel/Handler/FieldUrlTest.php b/core/modules/views/tests/src/Kernel/Handler/FieldUrlTest.php
index 828fdb4fdf1f0b2e3c4f4d7053bf1c181fcb645d..0814402ca6d6a36712f2aa75981ce8e144af1d13 100644
--- a/core/modules/views/tests/src/Kernel/Handler/FieldUrlTest.php
+++ b/core/modules/views/tests/src/Kernel/Handler/FieldUrlTest.php
@@ -22,7 +22,7 @@ class FieldUrlTest extends ViewsKernelTestBase {
    */
   public static $testViews = ['test_view'];
 
-  function viewsData() {
+  public function viewsData() {
     $data = parent::viewsData();
     $data['views_test_data']['name']['field']['id'] = 'url';
     return $data;
diff --git a/core/modules/views/tests/src/Kernel/Handler/FilterEqualityTest.php b/core/modules/views/tests/src/Kernel/Handler/FilterEqualityTest.php
index 41002e806c3437b9b181f3c37c0a487bf58e3b8c..d78f7c92e2b714659411ed34b47d01445adb0c6d 100644
--- a/core/modules/views/tests/src/Kernel/Handler/FilterEqualityTest.php
+++ b/core/modules/views/tests/src/Kernel/Handler/FilterEqualityTest.php
@@ -30,13 +30,13 @@ class FilterEqualityTest extends ViewsKernelTestBase {
     'views_test_data_name' => 'name',
   ];
 
-  function viewsData() {
+  public function viewsData() {
     $data = parent::viewsData();
     $data['views_test_data']['name']['filter']['id'] = 'equality';
     return $data;
   }
 
-  function testEqual() {
+  public function testEqual() {
     $view = Views::getView('test_view');
     $view->setDisplay();
 
@@ -82,7 +82,7 @@ public function testEqualGroupedExposed() {
     $this->assertIdenticalResultset($view, $resultset, $this->columnMap);
   }
 
-  function testNotEqual() {
+  public function testNotEqual() {
     $view = Views::getView('test_view');
     $view->setDisplay();
 
diff --git a/core/modules/views/tests/src/Kernel/Handler/FilterInOperatorTest.php b/core/modules/views/tests/src/Kernel/Handler/FilterInOperatorTest.php
index b542c9c1dad1cd7c1acefc1ced426479e1b8ec7f..e02a8430c7317780b29073b236b6b54b578bec6a 100644
--- a/core/modules/views/tests/src/Kernel/Handler/FilterInOperatorTest.php
+++ b/core/modules/views/tests/src/Kernel/Handler/FilterInOperatorTest.php
@@ -31,7 +31,7 @@ class FilterInOperatorTest extends ViewsKernelTestBase {
     'views_test_data_age' => 'age',
   ];
 
-  function viewsData() {
+  public function viewsData() {
     $data = parent::viewsData();
     $data['views_test_data']['age']['filter']['id'] = 'in_operator';
     return $data;
diff --git a/core/modules/views/tests/src/Kernel/Handler/FilterNumericTest.php b/core/modules/views/tests/src/Kernel/Handler/FilterNumericTest.php
index d10b792080638ed8d79f381a5b151e4a007b7d57..b154a785298c0845bc8e93b6280ce6f0f320734b 100644
--- a/core/modules/views/tests/src/Kernel/Handler/FilterNumericTest.php
+++ b/core/modules/views/tests/src/Kernel/Handler/FilterNumericTest.php
@@ -31,7 +31,7 @@ class FilterNumericTest extends ViewsKernelTestBase {
     'views_test_data_age' => 'age',
   ];
 
-  function viewsData() {
+  public function viewsData() {
     $data = parent::viewsData();
     $data['views_test_data']['age']['filter']['allow empty'] = TRUE;
     $data['views_test_data']['id']['filter']['allow empty'] = FALSE;
diff --git a/core/modules/views/tests/src/Kernel/Handler/FilterStringTest.php b/core/modules/views/tests/src/Kernel/Handler/FilterStringTest.php
index c21df9a0f78652127a768d8530d47d18b2bc192a..9ad0f88f633029a681abf84daa75dc8958ee8452 100644
--- a/core/modules/views/tests/src/Kernel/Handler/FilterStringTest.php
+++ b/core/modules/views/tests/src/Kernel/Handler/FilterStringTest.php
@@ -30,7 +30,7 @@ class FilterStringTest extends ViewsKernelTestBase {
     'views_test_data_name' => 'name',
   ];
 
-  function viewsData() {
+  public function viewsData() {
     $data = parent::viewsData();
     $data['views_test_data']['name']['filter']['allow empty'] = TRUE;
     $data['views_test_data']['job']['filter']['allow empty'] = FALSE;
@@ -81,7 +81,7 @@ protected function getBasicPageView() {
     return $view;
   }
 
-  function testFilterStringEqual() {
+  public function testFilterStringEqual() {
     $view = Views::getView('test_view');
     $view->setDisplay();
 
@@ -106,7 +106,7 @@ function testFilterStringEqual() {
     $this->assertIdenticalResultset($view, $resultset, $this->columnMap);
   }
 
-  function testFilterStringGroupedExposedEqual() {
+  public function testFilterStringGroupedExposedEqual() {
     $filters = $this->getGroupedExposedFilters();
     $view = $this->getBasicPageView();
 
@@ -128,7 +128,7 @@ function testFilterStringGroupedExposedEqual() {
     $this->assertIdenticalResultset($view, $resultset, $this->columnMap);
   }
 
-  function testFilterStringNotEqual() {
+  public function testFilterStringNotEqual() {
     $view = Views::getView('test_view');
     $view->setDisplay();
 
@@ -162,7 +162,7 @@ function testFilterStringNotEqual() {
     $this->assertIdenticalResultset($view, $resultset, $this->columnMap);
   }
 
-  function testFilterStringGroupedExposedNotEqual() {
+  public function testFilterStringGroupedExposedNotEqual() {
     $filters = $this->getGroupedExposedFilters();
     $view = $this->getBasicPageView();
 
@@ -194,7 +194,7 @@ function testFilterStringGroupedExposedNotEqual() {
     $this->assertIdenticalResultset($view, $resultset, $this->columnMap);
   }
 
-  function testFilterStringContains() {
+  public function testFilterStringContains() {
     $view = Views::getView('test_view');
     $view->setDisplay();
 
@@ -220,7 +220,7 @@ function testFilterStringContains() {
   }
 
 
-  function testFilterStringGroupedExposedContains() {
+  public function testFilterStringGroupedExposedContains() {
     $filters = $this->getGroupedExposedFilters();
     $view = $this->getBasicPageView();
 
@@ -243,7 +243,7 @@ function testFilterStringGroupedExposedContains() {
   }
 
 
-  function testFilterStringWord() {
+  public function testFilterStringWord() {
     $view = Views::getView('test_view');
     $view->setDisplay();
 
@@ -296,7 +296,7 @@ function testFilterStringWord() {
   }
 
 
-  function testFilterStringGroupedExposedWord() {
+  public function testFilterStringGroupedExposedWord() {
     $filters = $this->getGroupedExposedFilters();
     $view = $this->getBasicPageView();
 
@@ -338,7 +338,7 @@ function testFilterStringGroupedExposedWord() {
     $this->assertIdenticalResultset($view, $resultset, $this->columnMap);
   }
 
-  function testFilterStringStarts() {
+  public function testFilterStringStarts() {
     $view = Views::getView('test_view');
     $view->setDisplay();
 
@@ -363,7 +363,7 @@ function testFilterStringStarts() {
     $this->assertIdenticalResultset($view, $resultset, $this->columnMap);
   }
 
-  function testFilterStringGroupedExposedStarts() {
+  public function testFilterStringGroupedExposedStarts() {
     $filters = $this->getGroupedExposedFilters();
     $view = $this->getBasicPageView();
 
@@ -384,7 +384,7 @@ function testFilterStringGroupedExposedStarts() {
     $this->assertIdenticalResultset($view, $resultset, $this->columnMap);
   }
 
-  function testFilterStringNotStarts() {
+  public function testFilterStringNotStarts() {
     $view = Views::getView('test_view');
     $view->setDisplay();
 
@@ -416,7 +416,7 @@ function testFilterStringNotStarts() {
     $this->assertIdenticalResultset($view, $resultset, $this->columnMap);
   }
 
-  function testFilterStringGroupedExposedNotStarts() {
+  public function testFilterStringGroupedExposedNotStarts() {
     $filters = $this->getGroupedExposedFilters();
     $view = $this->getBasicPageView();
 
@@ -444,7 +444,7 @@ function testFilterStringGroupedExposedNotStarts() {
     $this->assertIdenticalResultset($view, $resultset, $this->columnMap);
   }
 
-  function testFilterStringEnds() {
+  public function testFilterStringEnds() {
     $view = Views::getView('test_view');
     $view->setDisplay();
 
@@ -472,7 +472,7 @@ function testFilterStringEnds() {
     $this->assertIdenticalResultset($view, $resultset, $this->columnMap);
   }
 
-  function testFilterStringGroupedExposedEnds() {
+  public function testFilterStringGroupedExposedEnds() {
     $filters = $this->getGroupedExposedFilters();
     $view = $this->getBasicPageView();
 
@@ -496,7 +496,7 @@ function testFilterStringGroupedExposedEnds() {
     $this->assertIdenticalResultset($view, $resultset, $this->columnMap);
   }
 
-  function testFilterStringNotEnds() {
+  public function testFilterStringNotEnds() {
     $view = Views::getView('test_view');
     $view->setDisplay();
 
@@ -525,7 +525,7 @@ function testFilterStringNotEnds() {
     $this->assertIdenticalResultset($view, $resultset, $this->columnMap);
   }
 
-  function testFilterStringGroupedExposedNotEnds() {
+  public function testFilterStringGroupedExposedNotEnds() {
     $filters = $this->getGroupedExposedFilters();
     $view = $this->getBasicPageView();
 
@@ -550,7 +550,7 @@ function testFilterStringGroupedExposedNotEnds() {
     $this->assertIdenticalResultset($view, $resultset, $this->columnMap);
   }
 
-  function testFilterStringNot() {
+  public function testFilterStringNot() {
     $view = Views::getView('test_view');
     $view->setDisplay();
 
@@ -580,7 +580,7 @@ function testFilterStringNot() {
   }
 
 
-  function testFilterStringGroupedExposedNot() {
+  public function testFilterStringGroupedExposedNot() {
     $filters = $this->getGroupedExposedFilters();
     $view = $this->getBasicPageView();
 
@@ -606,7 +606,7 @@ function testFilterStringGroupedExposedNot() {
 
   }
 
-  function testFilterStringShorter() {
+  public function testFilterStringShorter() {
     $view = Views::getView('test_view');
     $view->setDisplay();
 
@@ -634,7 +634,7 @@ function testFilterStringShorter() {
     $this->assertIdenticalResultset($view, $resultset, $this->columnMap);
   }
 
-  function testFilterStringGroupedExposedShorter() {
+  public function testFilterStringGroupedExposedShorter() {
     $filters = $this->getGroupedExposedFilters();
     $view = $this->getBasicPageView();
 
@@ -657,7 +657,7 @@ function testFilterStringGroupedExposedShorter() {
     $this->assertIdenticalResultset($view, $resultset, $this->columnMap);
   }
 
-  function testFilterStringLonger() {
+  public function testFilterStringLonger() {
     $view = Views::getView('test_view');
     $view->setDisplay();
 
@@ -682,7 +682,7 @@ function testFilterStringLonger() {
     $this->assertIdenticalResultset($view, $resultset, $this->columnMap);
   }
 
-  function testFilterStringGroupedExposedLonger() {
+  public function testFilterStringGroupedExposedLonger() {
     $filters = $this->getGroupedExposedFilters();
     $view = $this->getBasicPageView();
 
@@ -703,7 +703,7 @@ function testFilterStringGroupedExposedLonger() {
   }
 
 
-  function testFilterStringEmpty() {
+  public function testFilterStringEmpty() {
     $view = Views::getView('test_view');
     $view->setDisplay();
 
@@ -727,7 +727,7 @@ function testFilterStringEmpty() {
     $this->assertIdenticalResultset($view, $resultset, $this->columnMap);
   }
 
-  function testFilterStringGroupedExposedEmpty() {
+  public function testFilterStringGroupedExposedEmpty() {
     $filters = $this->getGroupedExposedFilters();
     $view = $this->getBasicPageView();
 
diff --git a/core/modules/views/tests/src/Kernel/ModuleTest.php b/core/modules/views/tests/src/Kernel/ModuleTest.php
index 4ed5e0a969740304b0f4ab5b12576f4c7c4c9771..68612b78f40beaf3cc0f948e4d53449b99565d72 100644
--- a/core/modules/views/tests/src/Kernel/ModuleTest.php
+++ b/core/modules/views/tests/src/Kernel/ModuleTest.php
@@ -208,7 +208,7 @@ public function testLoadFunctions() {
   /**
    * Tests view enable and disable procedural wrapper functions.
    */
-  function testStatusFunctions() {
+  public function testStatusFunctions() {
     $view = Views::getView('test_view_status')->storage;
 
     $this->assertFalse($view->status(), 'The view status is disabled.');
@@ -360,7 +360,7 @@ protected function formatViewOptions(array $views = []) {
   /**
    * Ensure that a certain handler is a instance of a certain table/field.
    */
-  function assertInstanceHandler($handler, $table, $field, $id) {
+  public function assertInstanceHandler($handler, $table, $field, $id) {
     $table_data = $this->container->get('views.views_data')->get($table);
     $field_data = $table_data[$field][$id];
 
diff --git a/core/modules/views/tests/src/Kernel/Plugin/ArgumentValidatorTest.php b/core/modules/views/tests/src/Kernel/Plugin/ArgumentValidatorTest.php
index cac798555ca449121757f7982e4ccd516ecc1c70..34d426dc761e706cc8ea7c0111df878f20a93095 100644
--- a/core/modules/views/tests/src/Kernel/Plugin/ArgumentValidatorTest.php
+++ b/core/modules/views/tests/src/Kernel/Plugin/ArgumentValidatorTest.php
@@ -20,7 +20,7 @@ class ArgumentValidatorTest extends ViewsKernelTestBase {
    */
   public static $testViews = ['test_view_argument_validate_numeric', 'test_view'];
 
-  function testArgumentValidateNumeric() {
+  public function testArgumentValidateNumeric() {
     $view = Views::getView('test_view_argument_validate_numeric');
     $view->initHandlers();
     $this->assertFalse($view->argument['null']->validateArgument($this->randomString()));
diff --git a/core/modules/views/tests/src/Kernel/Plugin/CacheTest.php b/core/modules/views/tests/src/Kernel/Plugin/CacheTest.php
index 01c6721726796fb4423c2577df07cbb9e7d43c14..9f6066eff31411b36d340d294c9eb75b6208330c 100644
--- a/core/modules/views/tests/src/Kernel/Plugin/CacheTest.php
+++ b/core/modules/views/tests/src/Kernel/Plugin/CacheTest.php
@@ -224,7 +224,7 @@ public function testTimeResultCachingWithPager() {
    *
    * @see views_plugin_cache_time
    */
-  function testNoneResultCaching() {
+  public function testNoneResultCaching() {
     // Create a basic result which just 2 results.
     $view = Views::getView('test_cache');
     $view->setDisplay();
@@ -261,7 +261,7 @@ function testNoneResultCaching() {
   /**
    * Tests css/js storage and restoring mechanism.
    */
-  function testHeaderStorage() {
+  public function testHeaderStorage() {
     // Create a view with output caching enabled.
     // Some hook_views_pre_render in views_test_data.module adds the test css/js file.
     // so they should be added to the css/js storage.
diff --git a/core/modules/views/tests/src/Kernel/Plugin/StyleHtmlListTest.php b/core/modules/views/tests/src/Kernel/Plugin/StyleHtmlListTest.php
index 717403dacc65d5dbc25a4ac987d09e56b9ee5862..0e99439e7ed25532bbb8bebd79485e0a0a567cd5 100644
--- a/core/modules/views/tests/src/Kernel/Plugin/StyleHtmlListTest.php
+++ b/core/modules/views/tests/src/Kernel/Plugin/StyleHtmlListTest.php
@@ -23,7 +23,7 @@ class StyleHtmlListTest extends ViewsKernelTestBase {
   /**
    * Make sure that the HTML list style markup is correct.
    */
-  function testDefaultRowClasses() {
+  public function testDefaultRowClasses() {
     $view = Views::getView('test_style_html_list');
     $output = $view->preview();
     $output = \Drupal::service('renderer')->renderRoot($output);
diff --git a/core/modules/views/tests/src/Kernel/Plugin/StyleTestBase.php b/core/modules/views/tests/src/Kernel/Plugin/StyleTestBase.php
index 00dd9f98b6701683c65132b145e10b4abf0e375e..91900cea2773646540a65461ea7a39b650139744 100644
--- a/core/modules/views/tests/src/Kernel/Plugin/StyleTestBase.php
+++ b/core/modules/views/tests/src/Kernel/Plugin/StyleTestBase.php
@@ -20,7 +20,7 @@ abstract class StyleTestBase extends ViewsKernelTestBase {
   /**
    * Stores a view output in the elements.
    */
-  function storeViewPreview($output) {
+  public function storeViewPreview($output) {
     $html5 = new HTML5();
     $htmlDom = $html5->loadHTML('<html><body>' . $output . '</body></html>');
     if ($htmlDom) {
diff --git a/core/modules/views/tests/src/Kernel/Plugin/StyleUnformattedTest.php b/core/modules/views/tests/src/Kernel/Plugin/StyleUnformattedTest.php
index f1b254cf7e6d5d903751578b7baf162dea8db020..af58b7000610435df75d9e10a552e7d1c516035b 100644
--- a/core/modules/views/tests/src/Kernel/Plugin/StyleUnformattedTest.php
+++ b/core/modules/views/tests/src/Kernel/Plugin/StyleUnformattedTest.php
@@ -21,7 +21,7 @@ class StyleUnformattedTest extends StyleTestBase {
   /**
    * Make sure that the default css classes works as expected.
    */
-  function testDefaultRowClasses() {
+  public function testDefaultRowClasses() {
     $view = Views::getView('test_view');
     $view->setDisplay();
     $output = $view->preview();
diff --git a/core/modules/views/tests/src/Kernel/TokenReplaceTest.php b/core/modules/views/tests/src/Kernel/TokenReplaceTest.php
index 41f2cf07afda39e02c87fd224f52e4d5f55a66f4..4b1cfc362c83f17300937b4b04452d9954ec839c 100644
--- a/core/modules/views/tests/src/Kernel/TokenReplaceTest.php
+++ b/core/modules/views/tests/src/Kernel/TokenReplaceTest.php
@@ -29,7 +29,7 @@ protected function setUp($import_test_views = TRUE) {
   /**
    * Tests core token replacements generated from a view.
    */
-  function testTokenReplacement() {
+  public function testTokenReplacement() {
     $token_handler = \Drupal::token();
     $view = Views::getView('test_tokens');
     $view->setDisplay('page_1');
@@ -76,7 +76,7 @@ function testTokenReplacement() {
   /**
    * Tests core token replacements generated from a view.
    */
-  function testTokenReplacementWithMiniPager() {
+  public function testTokenReplacementWithMiniPager() {
     $token_handler = \Drupal::token();
     $view = Views::getView('test_tokens');
     $view->setDisplay('page_3');
@@ -113,7 +113,7 @@ function testTokenReplacementWithMiniPager() {
   /**
    * Tests core token replacements generated from a view without results.
    */
-  function testTokenReplacementNoResults() {
+  public function testTokenReplacementNoResults() {
     $token_handler = \Drupal::token();
     $view = Views::getView('test_tokens');
     $view->setDisplay('page_2');
@@ -132,7 +132,7 @@ function testTokenReplacementNoResults() {
   /**
    * Tests path token replacements generated from a view without a path.
    */
-  function testTokenReplacementNoPath() {
+  public function testTokenReplacementNoPath() {
     $token_handler = \Drupal::token();
     $view = Views::getView('test_invalid_tokens');
     $view->setDisplay('block_1');
diff --git a/core/modules/views/tests/src/Kernel/ViewStorageTest.php b/core/modules/views/tests/src/Kernel/ViewStorageTest.php
index 29f19963446cafa295f261781979e85c9af81431..7cf953af740b0682b5349f5fc82e6e9a40db0fd5 100644
--- a/core/modules/views/tests/src/Kernel/ViewStorageTest.php
+++ b/core/modules/views/tests/src/Kernel/ViewStorageTest.php
@@ -57,7 +57,7 @@ class ViewStorageTest extends ViewsKernelTestBase {
   /**
    * Tests CRUD operations.
    */
-  function testConfigurationEntityCRUD() {
+  public function testConfigurationEntityCRUD() {
     // Get the configuration entity type and controller.
     $this->entityType = \Drupal::entityManager()->getDefinition('view');
     $this->controller = $this->container->get('entity.manager')->getStorage('view');
diff --git a/core/modules/views_ui/src/Tests/AnalyzeTest.php b/core/modules/views_ui/src/Tests/AnalyzeTest.php
index ef1744b3b710cbde1f1e9fb91ef2630d79db2da0..83e25313d67c1219d85280dd2ca2404e01018876 100644
--- a/core/modules/views_ui/src/Tests/AnalyzeTest.php
+++ b/core/modules/views_ui/src/Tests/AnalyzeTest.php
@@ -37,7 +37,7 @@ protected function setUp() {
   /**
    * Tests that analyze works in general.
    */
-  function testAnalyzeBasic() {
+  public function testAnalyzeBasic() {
     $this->drupalLogin($this->admin);
 
     $this->drupalGet('admin/structure/views/view/test_view/edit');
diff --git a/core/modules/views_ui/src/Tests/DefaultViewsTest.php b/core/modules/views_ui/src/Tests/DefaultViewsTest.php
index 855cbdad7d77dea409b63847a19dd6efb9b02173..a709d1f41382dee4bbd62389a7bc8ea3457e3865 100644
--- a/core/modules/views_ui/src/Tests/DefaultViewsTest.php
+++ b/core/modules/views_ui/src/Tests/DefaultViewsTest.php
@@ -30,7 +30,7 @@ protected function setUp() {
   /**
    * Tests default views.
    */
-  function testDefaultViews() {
+  public function testDefaultViews() {
     // Make sure the view starts off as disabled (does not appear on the listing
     // page).
     $edit_href = 'admin/structure/views/view/glossary';
@@ -159,7 +159,7 @@ function testDefaultViews() {
   /**
    * Tests that enabling views moves them to the correct table.
    */
-  function testSplitListing() {
+  public function testSplitListing() {
     // Build a re-usable xpath query.
     $xpath = '//div[@id="views-entity-list"]/div[@class = :status]/table//td/text()[contains(., :title)]';
 
@@ -227,7 +227,7 @@ public function testPathDestination() {
    *   The page content that results from clicking on the link, or FALSE on
    *   failure. Failure also results in a failed assertion.
    */
-  function clickViewsOperationLink($label, $unique_href_part) {
+  public function clickViewsOperationLink($label, $unique_href_part) {
     $links = $this->xpath('//a[normalize-space(text())=:label]', [':label' => $label]);
     foreach ($links as $link_index => $link) {
       $position = strpos($link['href'], $unique_href_part);
diff --git a/core/modules/views_ui/src/Tests/ExposedFormUITest.php b/core/modules/views_ui/src/Tests/ExposedFormUITest.php
index 7d29f3e1fd411656966e69cee419fed582b7128a..0aaa6ee7c53abe02f9543bb4d05fe81c10c489a8 100644
--- a/core/modules/views_ui/src/Tests/ExposedFormUITest.php
+++ b/core/modules/views_ui/src/Tests/ExposedFormUITest.php
@@ -52,7 +52,7 @@ protected function setUp() {
   /**
    * Tests the admin interface of exposed filter and sort items.
    */
-  function testExposedAdminUi() {
+  public function testExposedAdminUi() {
     $edit = [];
 
     $this->drupalGet('admin/structure/views/nojs/handler/test_exposed_admin_ui/default/filter/type');
@@ -134,7 +134,7 @@ function testExposedAdminUi() {
   /**
    * Tests the admin interface of exposed grouped filters.
    */
-  function testGroupedFilterAdminUi() {
+  public function testGroupedFilterAdminUi() {
     $edit = [];
 
     $this->drupalGet('admin/structure/views/nojs/handler/test_exposed_admin_ui/default/filter/type');
diff --git a/core/modules/views_ui/src/Tests/GroupByTest.php b/core/modules/views_ui/src/Tests/GroupByTest.php
index 1bf8f01929d8d447961b04bb6a09d78a16c01255..4b564c518688efaee19db53567015547d3a6ac02 100644
--- a/core/modules/views_ui/src/Tests/GroupByTest.php
+++ b/core/modules/views_ui/src/Tests/GroupByTest.php
@@ -21,7 +21,7 @@ class GroupByTest extends UITestBase {
    *
    * @todo This should check the change of the settings as well.
    */
-  function testGroupBySave() {
+  public function testGroupBySave() {
     $this->drupalGet('admin/structure/views/view/test_views_groupby_save/edit');
 
     $edit_groupby_url = 'admin/structure/views/nojs/handler-group/test_views_groupby_save/default/field/id';
diff --git a/core/modules/views_ui/src/Tests/OverrideDisplaysTest.php b/core/modules/views_ui/src/Tests/OverrideDisplaysTest.php
index fdd73e130221ef8be3dba1d292e22ec22d87ece5..ba425424087952a4cecd66ad3beef7a85dbed633 100644
--- a/core/modules/views_ui/src/Tests/OverrideDisplaysTest.php
+++ b/core/modules/views_ui/src/Tests/OverrideDisplaysTest.php
@@ -18,7 +18,7 @@ protected function setUp() {
   /**
    * Tests that displays can be overridden via the UI.
    */
-  function testOverrideDisplays() {
+  public function testOverrideDisplays() {
     // Create a basic view that shows all content, with a page and a block
     // display.
     $view['label'] = $this->randomMachineName(16);
@@ -77,7 +77,7 @@ function testOverrideDisplays() {
   /**
    * Tests that the wizard correctly sets up default and overridden displays.
    */
-  function testWizardMixedDefaultOverriddenDisplays() {
+  public function testWizardMixedDefaultOverriddenDisplays() {
     // Create a basic view with a page, block, and feed. Give the page and feed
     // identical titles, but give the block a different one, so we expect the
     // page and feed to inherit their titles from the default display, but the
@@ -172,7 +172,7 @@ function testWizardMixedDefaultOverriddenDisplays() {
   /**
    * Tests that the revert to all displays select-option works as expected.
    */
-  function testRevertAllDisplays() {
+  public function testRevertAllDisplays() {
     // Create a basic view with a page, block.
     // Because there is both a title on page and block we expect the title on
     // the block be overridden.
diff --git a/core/modules/views_ui/src/Tests/PreviewTest.php b/core/modules/views_ui/src/Tests/PreviewTest.php
index 48e0ada2a9fc81d4e2ba7cc7db387e280f878463..95fba8c6ad0340f82d59ab9b32f3239fe320e532 100644
--- a/core/modules/views_ui/src/Tests/PreviewTest.php
+++ b/core/modules/views_ui/src/Tests/PreviewTest.php
@@ -45,7 +45,7 @@ public function testPreviewContextual() {
   /**
    * Tests arguments in the preview form.
    */
-  function testPreviewUI() {
+  public function testPreviewUI() {
     $this->drupalGet('admin/structure/views/view/test_preview/edit');
     $this->assertResponse(200);
 
diff --git a/core/modules/views_ui/src/Tests/SettingsTest.php b/core/modules/views_ui/src/Tests/SettingsTest.php
index 40a52e9ae0659b4f661455f5797ddc515baac400..f583185cdb576c8939da8dc375a34b1488199561 100644
--- a/core/modules/views_ui/src/Tests/SettingsTest.php
+++ b/core/modules/views_ui/src/Tests/SettingsTest.php
@@ -27,7 +27,7 @@ protected function setUp() {
   /**
    * Tests the settings for the edit ui.
    */
-  function testEditUI() {
+  public function testEditUI() {
     $this->drupalLogin($this->adminUser);
 
     // Test the settings tab exists.
diff --git a/core/phpcs.xml.dist b/core/phpcs.xml.dist
index bcfa4a347a86069436f257e5e4685ed9702a1246..0c35743a313a31ff4519204f45eef17b308b4224 100644
--- a/core/phpcs.xml.dist
+++ b/core/phpcs.xml.dist
@@ -78,6 +78,7 @@
   <rule ref="Drupal.InfoFiles.ClassFiles"/>
   <rule ref="Drupal.InfoFiles.DuplicateEntry"/>
   <rule ref="Drupal.InfoFiles.Required"/>
+  <rule ref="Drupal.Scope.MethodScope"/>
   <rule ref="Drupal.Semantics.EmptyInstall"/>
   <rule ref="Drupal.Semantics.FunctionT">
     <exclude name="Drupal.Semantics.FunctionT.BackslashSingleQuote"/>
diff --git a/core/profiles/minimal/src/Tests/MinimalTest.php b/core/profiles/minimal/src/Tests/MinimalTest.php
index 7a505cd0a23b2b62aef8624bdc0a8a32f52999e6..c7e3228b0abd1b16561ee7474de6464219741541 100644
--- a/core/profiles/minimal/src/Tests/MinimalTest.php
+++ b/core/profiles/minimal/src/Tests/MinimalTest.php
@@ -16,7 +16,7 @@ class MinimalTest extends WebTestBase {
   /**
    * Tests Minimal installation profile.
    */
-  function testMinimal() {
+  public function testMinimal() {
     $this->drupalGet('');
     // Check the login block is present.
     $this->assertLink(t('Create new account'));
diff --git a/core/profiles/standard/tests/src/Functional/StandardTest.php b/core/profiles/standard/tests/src/Functional/StandardTest.php
index 9baae37c82a818c864fb673f6a02d13f95f21100..f449c10a12f0742ec93f98091ca8d646a33b813e 100644
--- a/core/profiles/standard/tests/src/Functional/StandardTest.php
+++ b/core/profiles/standard/tests/src/Functional/StandardTest.php
@@ -31,7 +31,7 @@ class StandardTest extends BrowserTestBase {
   /**
    * Tests Standard installation profile.
    */
-  function testStandard() {
+  public function testStandard() {
     $this->drupalGet('');
     $this->assertLink(t('Contact'));
     $this->clickLink(t('Contact'));
diff --git a/core/profiles/testing/modules/drupal_system_listing_compatible_test/src/Tests/SystemListingCompatibleTest.php b/core/profiles/testing/modules/drupal_system_listing_compatible_test/src/Tests/SystemListingCompatibleTest.php
index ac2087be77abbf6fa54445273e6b0d4476a35b28..7df92f26075e21d158702bcbc816cffb370e412a 100644
--- a/core/profiles/testing/modules/drupal_system_listing_compatible_test/src/Tests/SystemListingCompatibleTest.php
+++ b/core/profiles/testing/modules/drupal_system_listing_compatible_test/src/Tests/SystemListingCompatibleTest.php
@@ -35,7 +35,7 @@ class SystemListingCompatibleTest extends WebTestBase {
   /**
    * Non-empty test* method required to executed the test case class.
    */
-  function testSystemListing() {
+  public function testSystemListing() {
     $this->pass(__CLASS__ . ' test executed.');
   }
 
diff --git a/core/tests/Drupal/FunctionalTests/GetTestMethodCallerTest.php b/core/tests/Drupal/FunctionalTests/GetTestMethodCallerTest.php
index 0281d26fc11175210a40152d0adeeb875ce972e6..f40ff20e921a02afab9b0e51d2a0bf4a6761b315 100644
--- a/core/tests/Drupal/FunctionalTests/GetTestMethodCallerTest.php
+++ b/core/tests/Drupal/FunctionalTests/GetTestMethodCallerTest.php
@@ -14,7 +14,7 @@ class GetTestMethodCallerTest extends BrowserTestBase {
   /**
    * Tests BrowserTestBase::getTestMethodCaller().
    */
-  function testGetTestMethodCaller() {
+  public function testGetTestMethodCaller() {
     $method_caller = $this->getTestMethodCaller();
     $expected = [
       'file' => __FILE__,
diff --git a/core/tests/Drupal/KernelTests/Core/Asset/AttachedAssetsTest.php b/core/tests/Drupal/KernelTests/Core/Asset/AttachedAssetsTest.php
index 3e058028110d14f94d7f0e75ad834bde13a9d2ad..fa409afc8b76d7150c0a74f6c46b6764944ea804 100644
--- a/core/tests/Drupal/KernelTests/Core/Asset/AttachedAssetsTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Asset/AttachedAssetsTest.php
@@ -55,7 +55,7 @@ protected function setUp() {
   /**
    * Tests that default CSS and JavaScript is empty.
    */
-  function testDefault() {
+  public function testDefault() {
     $assets = new AttachedAssets();
     $this->assertEqual([], $this->assetResolver->getCssAssets($assets, FALSE), 'Default CSS is empty.');
     list($js_assets_header, $js_assets_footer) = $this->assetResolver->getJsAssets($assets, FALSE);
@@ -66,7 +66,7 @@ function testDefault() {
   /**
    * Tests non-existing libraries.
    */
-  function testLibraryUnknown() {
+  public function testLibraryUnknown() {
     $build['#attached']['library'][] = 'core/unknown';
     $assets = AttachedAssets::createFromRenderArray($build);
 
@@ -76,7 +76,7 @@ function testLibraryUnknown() {
   /**
    * Tests adding a CSS and a JavaScript file.
    */
-  function testAddFiles() {
+  public function testAddFiles() {
     $build['#attached']['library'][] = 'common_test/files';
     $assets = AttachedAssets::createFromRenderArray($build);
 
@@ -97,7 +97,7 @@ function testAddFiles() {
   /**
    * Tests adding JavaScript settings.
    */
-  function testAddJsSettings() {
+  public function testAddJsSettings() {
     // Add a file in order to test default settings.
     $build['#attached']['library'][] = 'core/drupalSettings';
     $assets = AttachedAssets::createFromRenderArray($build);
@@ -116,7 +116,7 @@ function testAddJsSettings() {
   /**
    * Tests adding external CSS and JavaScript files.
    */
-  function testAddExternalFiles() {
+  public function testAddExternalFiles() {
     $build['#attached']['library'][] = 'common_test/external';
     $assets = AttachedAssets::createFromRenderArray($build);
 
@@ -136,7 +136,7 @@ function testAddExternalFiles() {
   /**
    * Tests adding JavaScript files with additional attributes.
    */
-  function testAttributes() {
+  public function testAttributes() {
     $build['#attached']['library'][] = 'common_test/js-attributes';
     $assets = AttachedAssets::createFromRenderArray($build);
 
@@ -152,7 +152,7 @@ function testAttributes() {
   /**
    * Tests that attributes are maintained when JS aggregation is enabled.
    */
-  function testAggregatedAttributes() {
+  public function testAggregatedAttributes() {
     $build['#attached']['library'][] = 'common_test/js-attributes';
     $assets = AttachedAssets::createFromRenderArray($build);
 
@@ -168,7 +168,7 @@ function testAggregatedAttributes() {
   /**
    * Integration test for CSS/JS aggregation.
    */
-  function testAggregation() {
+  public function testAggregation() {
     $build['#attached']['library'][] = 'core/drupal.timezone';
     $build['#attached']['library'][] = 'core/drupal.vertical-tabs';
     $assets = AttachedAssets::createFromRenderArray($build);
@@ -186,7 +186,7 @@ function testAggregation() {
   /**
    * Tests JavaScript settings.
    */
-  function testSettings() {
+  public function testSettings() {
     $build = [];
     $build['#attached']['library'][] = 'core/drupalSettings';
     // Nonsensical value to verify if it's possible to override path settings.
@@ -226,7 +226,7 @@ function testSettings() {
   /**
    * Tests JS assets depending on the 'core/<head>' virtual library.
    */
-  function testHeaderHTML() {
+  public function testHeaderHTML() {
     $build['#attached']['library'][] = 'common_test/js-header';
     $assets = AttachedAssets::createFromRenderArray($build);
 
@@ -242,7 +242,7 @@ function testHeaderHTML() {
   /**
    * Tests that for assets with cache = FALSE, Drupal sets preprocess = FALSE.
    */
-  function testNoCache() {
+  public function testNoCache() {
     $build['#attached']['library'][] = 'common_test/no-cache';
     $assets = AttachedAssets::createFromRenderArray($build);
 
@@ -255,7 +255,7 @@ function testNoCache() {
    *
    * @see \Drupal\Core\Render\Element\HtmlTag::preRenderConditionalComments()
    */
-  function testBrowserConditionalComments() {
+  public function testBrowserConditionalComments() {
     $default_query_string = $this->container->get('state')->get('system.css_js_query_string') ?: '0';
 
     $build['#attached']['library'][] = 'common_test/browsers';
@@ -274,7 +274,7 @@ function testBrowserConditionalComments() {
   /**
    * Tests JavaScript versioning.
    */
-  function testVersionQueryString() {
+  public function testVersionQueryString() {
     $build['#attached']['library'][] = 'core/backbone';
     $build['#attached']['library'][] = 'core/domready';
     $assets = AttachedAssets::createFromRenderArray($build);
@@ -289,7 +289,7 @@ function testVersionQueryString() {
   /**
    * Tests JavaScript and CSS asset ordering.
    */
-  function testRenderOrder() {
+  public function testRenderOrder() {
     $build['#attached']['library'][] = 'common_test/order';
     $assets = AttachedAssets::createFromRenderArray($build);
 
@@ -366,7 +366,7 @@ function testRenderOrder() {
   /**
    * Tests rendering the JavaScript with a file's weight above jQuery's.
    */
-  function testRenderDifferentWeight() {
+  public function testRenderDifferentWeight() {
     // If a library contains assets A and B, and A is listed first, then B can
     // still make itself appear first by defining a lower weight.
     $build['#attached']['library'][] = 'core/jquery';
@@ -386,7 +386,7 @@ function testRenderDifferentWeight() {
    *
    * @see simpletest_js_alter()
    */
-  function testAlter() {
+  public function testAlter() {
     // Add both tableselect.js and simpletest.js.
     $build['#attached']['library'][] = 'core/drupal.tableselect';
     $build['#attached']['library'][] = 'simpletest/drupal.simpletest';
@@ -406,7 +406,7 @@ function testAlter() {
    *
    * @see common_test_library_info_alter()
    */
-  function testLibraryAlter() {
+  public function testLibraryAlter() {
     // Verify that common_test altered the title of Farbtastic.
     /** @var \Drupal\Core\Asset\LibraryDiscoveryInterface $library_discovery */
     $library_discovery = \Drupal::service('library.discovery');
@@ -425,7 +425,7 @@ function testLibraryAlter() {
   /**
    * Dynamically defines an asset library and alters it.
    */
-  function testDynamicLibrary() {
+  public function testDynamicLibrary() {
     /** @var \Drupal\Core\Asset\LibraryDiscoveryInterface $library_discovery */
     $library_discovery = \Drupal::service('library.discovery');
     // Retrieve a dynamic library definition.
@@ -449,7 +449,7 @@ function testDynamicLibrary() {
    *
    * @see common_test.library.yml
    */
-  function testLibraryNameConflicts() {
+  public function testLibraryNameConflicts() {
     /** @var \Drupal\Core\Asset\LibraryDiscoveryInterface $library_discovery */
     $library_discovery = \Drupal::service('library.discovery');
     $farbtastic = $library_discovery->getLibraryByName('common_test', 'jquery.farbtastic');
@@ -459,7 +459,7 @@ function testLibraryNameConflicts() {
   /**
    * Tests JavaScript files that have querystrings attached get added right.
    */
-  function testAddJsFileWithQueryString() {
+  public function testAddJsFileWithQueryString() {
     $build['#attached']['library'][] = 'common_test/querystring';
     $assets = AttachedAssets::createFromRenderArray($build);
 
diff --git a/core/tests/Drupal/KernelTests/Core/Bootstrap/GetFilenameTest.php b/core/tests/Drupal/KernelTests/Core/Bootstrap/GetFilenameTest.php
index 9246eaa22edd866fb05499811e9c51c92ec171b4..4c5448718ed2e3f8d27af1c43c36166a97bebba4 100644
--- a/core/tests/Drupal/KernelTests/Core/Bootstrap/GetFilenameTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Bootstrap/GetFilenameTest.php
@@ -29,7 +29,7 @@ public function register(ContainerBuilder $container) {
   /**
    * Tests that drupal_get_filename() works when the file is not in database.
    */
-  function testDrupalGetFilename() {
+  public function testDrupalGetFilename() {
     // Rebuild system.module.files state data.
     // @todo Remove as part of https://www.drupal.org/node/2186491
     drupal_static_reset('system_rebuild_module_data');
diff --git a/core/tests/Drupal/KernelTests/Core/Bootstrap/ResettableStaticTest.php b/core/tests/Drupal/KernelTests/Core/Bootstrap/ResettableStaticTest.php
index 7b90ec1167c30231818e0857c0d11467f9a162cd..a2a7a85b8c74041366d3313798eb7ecc685947bd 100644
--- a/core/tests/Drupal/KernelTests/Core/Bootstrap/ResettableStaticTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Bootstrap/ResettableStaticTest.php
@@ -17,7 +17,7 @@ class ResettableStaticTest extends KernelTestBase {
    * Tests that a variable reference returned by drupal_static() gets reset when
    * drupal_static_reset() is called.
    */
-  function testDrupalStatic() {
+  public function testDrupalStatic() {
     $name = __CLASS__ . '_' . __METHOD__;
     $var = &drupal_static($name, 'foo');
     $this->assertEqual($var, 'foo', 'Variable returned by drupal_static() was set to its default.');
diff --git a/core/tests/Drupal/KernelTests/Core/Cache/GenericCacheBackendUnitTestBase.php b/core/tests/Drupal/KernelTests/Core/Cache/GenericCacheBackendUnitTestBase.php
index 8179d7d5a1d1bc8e456664ba34c490945fe873d6..4e57a71f6cdf7ac3d37d0d7669487892cbf92e2d 100644
--- a/core/tests/Drupal/KernelTests/Core/Cache/GenericCacheBackendUnitTestBase.php
+++ b/core/tests/Drupal/KernelTests/Core/Cache/GenericCacheBackendUnitTestBase.php
@@ -491,7 +491,7 @@ public function testDeleteAll() {
    * Test Drupal\Core\Cache\CacheBackendInterface::invalidate() and
    * Drupal\Core\Cache\CacheBackendInterface::invalidateMultiple().
    */
-  function testInvalidate() {
+  public function testInvalidate() {
     $backend = $this->getCacheBackend();
     $backend->set('test1', 1);
     $backend->set('test2', 2);
@@ -523,7 +523,7 @@ function testInvalidate() {
   /**
    * Tests Drupal\Core\Cache\CacheBackendInterface::invalidateTags().
    */
-  function testInvalidateTags() {
+  public function testInvalidateTags() {
     $backend = $this->getCacheBackend();
 
     // Create two cache entries with the same tag and tag value.
diff --git a/core/tests/Drupal/KernelTests/Core/Common/SizeTest.php b/core/tests/Drupal/KernelTests/Core/Common/SizeTest.php
index a759bb5c16dc601a11cd16ec936158e06f0b3d9c..9829b266d347de3f9dd220d11c7d0bda1c97d5df 100644
--- a/core/tests/Drupal/KernelTests/Core/Common/SizeTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Common/SizeTest.php
@@ -41,7 +41,7 @@ protected function setUp() {
   /**
    * Checks that format_size() returns the expected string.
    */
-  function testCommonFormatSize() {
+  public function testCommonFormatSize() {
     foreach ([$this->exactTestCases, $this->roundedTestCases] as $test_cases) {
       foreach ($test_cases as $expected => $input) {
         $this->assertEqual(
@@ -56,7 +56,7 @@ function testCommonFormatSize() {
   /**
    * Cross-tests Bytes::toInt() and format_size().
    */
-  function testCommonParseSizeFormatSize() {
+  public function testCommonParseSizeFormatSize() {
     foreach ($this->exactTestCases as $size) {
       $this->assertEqual(
         $size,
diff --git a/core/tests/Drupal/KernelTests/Core/Common/XssUnitTest.php b/core/tests/Drupal/KernelTests/Core/Common/XssUnitTest.php
index 0a67384148d19fee6bdf045c882c358383446ced..23754879eb8783f17e2c7708ac120f6feecbb0c8 100644
--- a/core/tests/Drupal/KernelTests/Core/Common/XssUnitTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Common/XssUnitTest.php
@@ -28,7 +28,7 @@ protected function setUp() {
   /**
    * Tests t() functionality.
    */
-  function testT() {
+  public function testT() {
     $text = t('Simple text');
     $this->assertEqual($text, 'Simple text', 't leaves simple text alone.');
     $text = t('Escaped text: @value', ['@value' => '<script>']);
@@ -40,7 +40,7 @@ function testT() {
   /**
    * Checks that harmful protocols are stripped.
    */
-  function testBadProtocolStripping() {
+  public function testBadProtocolStripping() {
     // Ensure that check_url() strips out harmful protocols, and encodes for
     // HTML.
     // Ensure \Drupal\Component\Utility\UrlHelper::stripDangerousProtocols() can
diff --git a/core/tests/Drupal/KernelTests/Core/Config/ConfigCRUDTest.php b/core/tests/Drupal/KernelTests/Core/Config/ConfigCRUDTest.php
index 6c40b1469d04e7ca40de4ca490828b192850d6f2..a94b1b8c1ee84d0d57c5ad3462efed402f4fdfde 100644
--- a/core/tests/Drupal/KernelTests/Core/Config/ConfigCRUDTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Config/ConfigCRUDTest.php
@@ -37,7 +37,7 @@ class ConfigCRUDTest extends KernelTestBase {
   /**
    * Tests CRUD operations.
    */
-  function testCRUD() {
+  public function testCRUD() {
     $storage = $this->container->get('config.storage');
     $config_factory = $this->container->get('config.factory');
     $name = 'config_test.crud';
@@ -157,7 +157,7 @@ function testCRUD() {
   /**
    * Tests the validation of configuration object names.
    */
-  function testNameValidation() {
+  public function testNameValidation() {
     // Verify that an object name without namespace causes an exception.
     $name = 'nonamespace';
     $message = 'Expected ConfigNameException was thrown for a name without a namespace.';
@@ -213,7 +213,7 @@ function testNameValidation() {
   /**
    * Tests the validation of configuration object values.
    */
-  function testValueValidation() {
+  public function testValueValidation() {
     // Verify that setData() will catch dotted keys.
     $message = 'Expected ConfigValueException was thrown from setData() for value with dotted keys.';
     try {
diff --git a/core/tests/Drupal/KernelTests/Core/Config/ConfigDiffTest.php b/core/tests/Drupal/KernelTests/Core/Config/ConfigDiffTest.php
index 6fd5c4edbf36c65352cd29932e688dda447f91d1..b69735ea91e5cf38705b8845b0b9bb002824ff5b 100644
--- a/core/tests/Drupal/KernelTests/Core/Config/ConfigDiffTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Config/ConfigDiffTest.php
@@ -21,7 +21,7 @@ class ConfigDiffTest extends KernelTestBase {
   /**
    * Tests calculating the difference between two sets of configuration.
    */
-  function testDiff() {
+  public function testDiff() {
     $active = $this->container->get('config.storage');
     $sync = $this->container->get('config.storage.sync');
     $config_name = 'config_test.system';
@@ -108,7 +108,7 @@ function testDiff() {
   /**
    * Tests calculating the difference between two sets of config collections.
    */
-  function testCollectionDiff() {
+  public function testCollectionDiff() {
     /** @var \Drupal\Core\Config\StorageInterface $active */
     $active = $this->container->get('config.storage');
     /** @var \Drupal\Core\Config\StorageInterface $sync */
diff --git a/core/tests/Drupal/KernelTests/Core/Config/ConfigEntityStatusTest.php b/core/tests/Drupal/KernelTests/Core/Config/ConfigEntityStatusTest.php
index 55610bfc934ea0563a6deabc3132f3c762762e3c..021136de668e336aee04b462dc03a424caa97e8c 100644
--- a/core/tests/Drupal/KernelTests/Core/Config/ConfigEntityStatusTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Config/ConfigEntityStatusTest.php
@@ -21,7 +21,7 @@ class ConfigEntityStatusTest extends KernelTestBase {
   /**
    * Tests the enabling/disabling of entities.
    */
-  function testCRUD() {
+  public function testCRUD() {
     $entity = entity_create('config_test', [
       'id' => strtolower($this->randomMachineName()),
     ]);
diff --git a/core/tests/Drupal/KernelTests/Core/Config/ConfigEventsTest.php b/core/tests/Drupal/KernelTests/Core/Config/ConfigEventsTest.php
index b39231531d267651dd98fb63bf4a857a8a672c92..74bb7984e6604e6e140483554465f00c0357f8bb 100644
--- a/core/tests/Drupal/KernelTests/Core/Config/ConfigEventsTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Config/ConfigEventsTest.php
@@ -23,7 +23,7 @@ class ConfigEventsTest extends KernelTestBase {
   /**
    * Tests configuration events.
    */
-  function testConfigEvents() {
+  public function testConfigEvents() {
     $name = 'config_events_test.test';
 
     $config = new Config($name, \Drupal::service('config.storage'), \Drupal::service('event_dispatcher'), \Drupal::service('config.typed'));
@@ -55,7 +55,7 @@ function testConfigEvents() {
   /**
    * Tests configuration rename event that is fired from the ConfigFactory.
    */
-  function testConfigRenameEvent() {
+  public function testConfigRenameEvent() {
     $name = 'config_events_test.test';
     $new_name = 'config_events_test.test_rename';
     $GLOBALS['config'][$name] = ['key' => 'overridden'];
diff --git a/core/tests/Drupal/KernelTests/Core/Config/ConfigFileContentTest.php b/core/tests/Drupal/KernelTests/Core/Config/ConfigFileContentTest.php
index 854c0907fdfdcd10492bc5d5fcd99ebcfe2ce157..53666292114a4d87e8d329b390147c3aec8aaa11 100644
--- a/core/tests/Drupal/KernelTests/Core/Config/ConfigFileContentTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Config/ConfigFileContentTest.php
@@ -24,7 +24,7 @@ class ConfigFileContentTest extends KernelTestBase {
   /**
    * Tests setting, writing, and reading of a configuration setting.
    */
-  function testReadWriteConfig() {
+  public function testReadWriteConfig() {
     $storage = $this->container->get('config.storage');
 
     $name = 'foo.bar';
@@ -187,7 +187,7 @@ function testReadWriteConfig() {
   /**
    * Tests serialization of configuration to file.
    */
-  function testSerialization() {
+  public function testSerialization() {
     $name = $this->randomMachineName(10) . '.' . $this->randomMachineName(10);
     $config_data = [
       // Indexed arrays; the order of elements is essential.
diff --git a/core/tests/Drupal/KernelTests/Core/Config/ConfigImporterMissingContentTest.php b/core/tests/Drupal/KernelTests/Core/Config/ConfigImporterMissingContentTest.php
index 93311952f99dd344bcd9b8eee417f430ba19f74d..59f9cb2ed728e88fda04f1699c2fb2e3b32debf2 100644
--- a/core/tests/Drupal/KernelTests/Core/Config/ConfigImporterMissingContentTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Config/ConfigImporterMissingContentTest.php
@@ -66,7 +66,7 @@ protected function setUp() {
    * @see \Drupal\Core\Config\ConfigImporter::processMissingContent()
    * @see \Drupal\config_import_test\EventSubscriber
    */
-  function testMissingContent() {
+  public function testMissingContent() {
     \Drupal::state()->set('config_import_test.config_import_missing_content', TRUE);
 
     // Update a configuration entity in the sync directory to have a dependency
diff --git a/core/tests/Drupal/KernelTests/Core/Config/ConfigImporterTest.php b/core/tests/Drupal/KernelTests/Core/Config/ConfigImporterTest.php
index 53ac7d19ef7e804cbb758455da8d510681fb651f..0ecc38c181f752f39fa788a4e0a7ca4e39f96d0f 100644
--- a/core/tests/Drupal/KernelTests/Core/Config/ConfigImporterTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Config/ConfigImporterTest.php
@@ -63,7 +63,7 @@ protected function setUp() {
   /**
    * Tests omission of module APIs for bare configuration operations.
    */
-  function testNoImport() {
+  public function testNoImport() {
     $dynamic_name = 'config_test.dynamic.dotted.default';
 
     // Verify the default configuration values exist.
@@ -78,7 +78,7 @@ function testNoImport() {
    * Tests that trying to import from an empty sync configuration directory
    * fails.
    */
-  function testEmptyImportFails() {
+  public function testEmptyImportFails() {
     try {
       $this->container->get('config.storage.sync')->deleteAll();
       $this->configImporter->reset()->import();
@@ -92,7 +92,7 @@ function testEmptyImportFails() {
   /**
    * Tests verification of site UUID before importing configuration.
    */
-  function testSiteUuidValidate() {
+  public function testSiteUuidValidate() {
     $sync = \Drupal::service('config.storage.sync');
     // Create updated configuration object.
     $config_data = $this->config('system.site')->get();
@@ -114,7 +114,7 @@ function testSiteUuidValidate() {
   /**
    * Tests deletion of configuration during import.
    */
-  function testDeleted() {
+  public function testDeleted() {
     $dynamic_name = 'config_test.dynamic.dotted.default';
     $storage = $this->container->get('config.storage');
     $sync = $this->container->get('config.storage.sync');
@@ -151,7 +151,7 @@ function testDeleted() {
   /**
    * Tests creation of configuration during import.
    */
-  function testNew() {
+  public function testNew() {
     $dynamic_name = 'config_test.dynamic.new';
     $storage = $this->container->get('config.storage');
     $sync = $this->container->get('config.storage.sync');
@@ -205,7 +205,7 @@ function testNew() {
   /**
    * Tests that secondary writes are overwritten.
    */
-  function testSecondaryWritePrimaryFirst() {
+  public function testSecondaryWritePrimaryFirst() {
     $name_primary = 'config_test.dynamic.primary';
     $name_secondary = 'config_test.dynamic.secondary';
     $sync = $this->container->get('config.storage.sync');
@@ -251,7 +251,7 @@ function testSecondaryWritePrimaryFirst() {
   /**
    * Tests that secondary writes are overwritten.
    */
-  function testSecondaryWriteSecondaryFirst() {
+  public function testSecondaryWriteSecondaryFirst() {
     $name_primary = 'config_test.dynamic.primary';
     $name_secondary = 'config_test.dynamic.secondary';
     $sync = $this->container->get('config.storage.sync');
@@ -297,7 +297,7 @@ function testSecondaryWriteSecondaryFirst() {
   /**
    * Tests that secondary updates for deleted files work as expected.
    */
-  function testSecondaryUpdateDeletedDeleterFirst() {
+  public function testSecondaryUpdateDeletedDeleterFirst() {
     $name_deleter = 'config_test.dynamic.deleter';
     $name_deletee = 'config_test.dynamic.deletee';
     $name_other = 'config_test.dynamic.other';
@@ -383,7 +383,7 @@ function testSecondaryUpdateDeletedDeleterFirst() {
    * configuration tree imports. Therefore, any configuration updates that cause
    * secondary deletes should be reflected already in the staged configuration.
    */
-  function testSecondaryUpdateDeletedDeleteeFirst() {
+  public function testSecondaryUpdateDeletedDeleteeFirst() {
     $name_deleter = 'config_test.dynamic.deleter';
     $name_deletee = 'config_test.dynamic.deletee';
     $storage = $this->container->get('config.storage');
@@ -429,7 +429,7 @@ function testSecondaryUpdateDeletedDeleteeFirst() {
   /**
    * Tests that secondary deletes for deleted files work as expected.
    */
-  function testSecondaryDeletedDeleteeSecond() {
+  public function testSecondaryDeletedDeleteeSecond() {
     $name_deleter = 'config_test.dynamic.deleter';
     $name_deletee = 'config_test.dynamic.deletee';
     $storage = $this->container->get('config.storage');
@@ -471,7 +471,7 @@ function testSecondaryDeletedDeleteeSecond() {
   /**
    * Tests updating of configuration during import.
    */
-  function testUpdated() {
+  public function testUpdated() {
     $name = 'config_test.system';
     $dynamic_name = 'config_test.dynamic.dotted.default';
     $storage = $this->container->get('config.storage');
@@ -528,7 +528,7 @@ function testUpdated() {
   /**
    * Tests the isInstallable method()
    */
-  function testIsInstallable() {
+  public function testIsInstallable() {
     $config_name = 'config_test.dynamic.isinstallable';
     $this->assertFalse($this->container->get('config.storage')->exists($config_name));
     \Drupal::state()->set('config_test.isinstallable', TRUE);
diff --git a/core/tests/Drupal/KernelTests/Core/Config/ConfigInstallTest.php b/core/tests/Drupal/KernelTests/Core/Config/ConfigInstallTest.php
index 953ff24b85d1c295410e2209c7c1151dc217bdf1..8203b311d079cebb4a23821e44167743c6339296 100644
--- a/core/tests/Drupal/KernelTests/Core/Config/ConfigInstallTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Config/ConfigInstallTest.php
@@ -34,7 +34,7 @@ protected function setUp() {
   /**
    * Tests module installation.
    */
-  function testModuleInstallation() {
+  public function testModuleInstallation() {
     $default_config = 'config_test.system';
     $default_configuration_entity = 'config_test.dynamic.dotted.default';
 
@@ -224,7 +224,7 @@ public function testDependencyChecking() {
   /**
    * Tests imported configuration entities with and without language information.
    */
-  function testLanguage() {
+  public function testLanguage() {
     $this->installModules(['config_test_language']);
     // Test imported configuration with implicit language code.
     $storage = new InstallStorage();
diff --git a/core/tests/Drupal/KernelTests/Core/Config/ConfigLanguageOverrideTest.php b/core/tests/Drupal/KernelTests/Core/Config/ConfigLanguageOverrideTest.php
index 6c6fa906222fa438a03813421ee985f1a8d7ce15..5bf6f0ec47c53aacabcb33ab2a1117c9f04db0a9 100644
--- a/core/tests/Drupal/KernelTests/Core/Config/ConfigLanguageOverrideTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Config/ConfigLanguageOverrideTest.php
@@ -30,7 +30,7 @@ protected function setUp() {
   /**
    * Tests locale override based on language.
    */
-  function testConfigLanguageOverride() {
+  public function testConfigLanguageOverride() {
     // The language module implements a config factory override object that
     // overrides configuration when the Language module is enabled. This test ensures that
     // English overrides work.
diff --git a/core/tests/Drupal/KernelTests/Core/Config/ConfigOverrideTest.php b/core/tests/Drupal/KernelTests/Core/Config/ConfigOverrideTest.php
index 157853bc937a1e4b1bfeabbf25383c00a6bf964d..b2ddaa396ddd27c39e5115df37cdb622cfa5f09f 100644
--- a/core/tests/Drupal/KernelTests/Core/Config/ConfigOverrideTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Config/ConfigOverrideTest.php
@@ -26,7 +26,7 @@ protected function setUp() {
   /**
    * Tests configuration override.
    */
-  function testConfOverride() {
+  public function testConfOverride() {
     $expected_original_data = [
       'foo' => 'bar',
       'baz' => NULL,
diff --git a/core/tests/Drupal/KernelTests/Core/Config/ConfigSchemaTest.php b/core/tests/Drupal/KernelTests/Core/Config/ConfigSchemaTest.php
index 95737d0d87d1dfb2f67ec76fa8fa7fa8ec79e338..96bd18c0a2ad48060b5724d9d554c586daeaafbe 100644
--- a/core/tests/Drupal/KernelTests/Core/Config/ConfigSchemaTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Config/ConfigSchemaTest.php
@@ -38,7 +38,7 @@ protected function setUp() {
   /**
    * Tests the basic metadata retrieval layer.
    */
-  function testSchemaMapping() {
+  public function testSchemaMapping() {
     // Nonexistent configuration key will have Undefined as metadata.
     $this->assertIdentical(FALSE, \Drupal::service('config.typed')->hasConfigSchema('config_schema_test.no_such_key'));
     $definition = \Drupal::service('config.typed')->getDefinition('config_schema_test.no_such_key');
@@ -252,7 +252,7 @@ function testSchemaMapping() {
   /**
    * Tests metadata retrieval with several levels of %parent indirection.
    */
-  function testSchemaMappingWithParents() {
+  public function testSchemaMappingWithParents() {
     $config_data = \Drupal::service('config.typed')->get('config_schema_test.someschema.with_parents');
 
     // Test fetching parent one level up.
@@ -292,7 +292,7 @@ function testSchemaMappingWithParents() {
   /**
    * Tests metadata applied to configuration objects.
    */
-  function testSchemaData() {
+  public function testSchemaData() {
     // Try a simple property.
     $meta = \Drupal::service('config.typed')->get('system.site');
     $property = $meta->get('page')->get('front');
@@ -468,7 +468,7 @@ public function testConfigSaveWithSequenceSorting() {
   /**
    * Tests fallback to a greedy wildcard.
    */
-  function testSchemaFallback() {
+  public function testSchemaFallback() {
     $definition = \Drupal::service('config.typed')->getDefinition('config_schema_test.wildcard_fallback.something');
     // This should be the schema of config_schema_test.wildcard_fallback.*.
     $expected = [];
@@ -497,7 +497,7 @@ function testSchemaFallback() {
    *
    * @see \Drupal\Core\Config\TypedConfigManager::getFallbackName()
    */
-  function testColonsInSchemaTypeDetermination() {
+  public function testColonsInSchemaTypeDetermination() {
     $tests = \Drupal::service('config.typed')->get('config_schema_test.plugin_types')->get('tests')->getElements();
     $definition = $tests[0]->getDataDefinition()->toArray();
     $this->assertEqual($definition['type'], 'test.plugin_types.boolean');
diff --git a/core/tests/Drupal/KernelTests/Core/Config/ConfigSnapshotTest.php b/core/tests/Drupal/KernelTests/Core/Config/ConfigSnapshotTest.php
index 2261168af679076a055f2cc102109a205a25f6cf..62eff04d4178585f06152e417233add1ef88eeb3 100644
--- a/core/tests/Drupal/KernelTests/Core/Config/ConfigSnapshotTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Config/ConfigSnapshotTest.php
@@ -33,7 +33,7 @@ protected function setUp() {
   /**
    * Tests config snapshot creation and updating.
    */
-  function testSnapshot() {
+  public function testSnapshot() {
     $active = $this->container->get('config.storage');
     $sync = $this->container->get('config.storage.sync');
     $snapshot = $this->container->get('config.storage.snapshot');
diff --git a/core/tests/Drupal/KernelTests/Core/Config/Storage/ConfigStorageTestBase.php b/core/tests/Drupal/KernelTests/Core/Config/Storage/ConfigStorageTestBase.php
index 079ac04a62b0274340feed8f35549dca4efd3c16..54d01641780315d4bd03727e72603b4ea1f25ab3 100644
--- a/core/tests/Drupal/KernelTests/Core/Config/Storage/ConfigStorageTestBase.php
+++ b/core/tests/Drupal/KernelTests/Core/Config/Storage/ConfigStorageTestBase.php
@@ -33,7 +33,7 @@ abstract class ConfigStorageTestBase extends KernelTestBase {
    *
    * @todo Coverage: Trigger PDOExceptions / Database exceptions.
    */
-  function testCRUD() {
+  public function testCRUD() {
     $name = 'config_test.storage';
 
     // Checking whether a non-existing name exists returns FALSE.
@@ -160,7 +160,7 @@ public function testInvalidStorage() {
   /**
    * Tests storage writing and reading data preserving data type.
    */
-  function testDataTypes() {
+  public function testDataTypes() {
     $name = 'config_test.types';
     $data = [
       'array' => [],
diff --git a/core/tests/Drupal/KernelTests/Core/Database/AlterTest.php b/core/tests/Drupal/KernelTests/Core/Database/AlterTest.php
index c5f9e9f4cb6e314c0b05ac2c931dad5f15b6c05f..e2a6589d7b3cd15b8160f15aefaf911e861912af 100644
--- a/core/tests/Drupal/KernelTests/Core/Database/AlterTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Database/AlterTest.php
@@ -13,7 +13,7 @@ class AlterTest extends DatabaseTestBase {
   /**
    * Tests that we can do basic alters.
    */
-  function testSimpleAlter() {
+  public function testSimpleAlter() {
     $query = db_select('test');
     $query->addField('test', 'name');
     $query->addField('test', 'age', 'age');
@@ -27,7 +27,7 @@ function testSimpleAlter() {
   /**
    * Tests that we can alter the joins on a query.
    */
-  function testAlterWithJoin() {
+  public function testAlterWithJoin() {
     $query = db_select('test_task');
     $tid_field = $query->addField('test_task', 'tid');
     $task_field = $query->addField('test_task', 'task');
@@ -51,7 +51,7 @@ function testAlterWithJoin() {
   /**
    * Tests that we can alter a query's conditionals.
    */
-  function testAlterChangeConditional() {
+  public function testAlterChangeConditional() {
     $query = db_select('test_task');
     $tid_field = $query->addField('test_task', 'tid');
     $pid_field = $query->addField('test_task', 'pid');
@@ -76,7 +76,7 @@ function testAlterChangeConditional() {
   /**
    * Tests that we can alter the fields of a query.
    */
-  function testAlterChangeFields() {
+  public function testAlterChangeFields() {
     $query = db_select('test');
     $name_field = $query->addField('test', 'name');
     $age_field = $query->addField('test', 'age', 'age');
@@ -91,7 +91,7 @@ function testAlterChangeFields() {
   /**
    * Tests that we can alter expressions in the query.
    */
-  function testAlterExpression() {
+  public function testAlterExpression() {
     $query = db_select('test');
     $name_field = $query->addField('test', 'name');
     $age_field = $query->addExpression("age*2", 'double_age');
@@ -111,7 +111,7 @@ function testAlterExpression() {
    *
    * This also tests hook_query_TAG_alter().
    */
-  function testAlterRemoveRange() {
+  public function testAlterRemoveRange() {
     $query = db_select('test');
     $query->addField('test', 'name');
     $query->addField('test', 'age', 'age');
@@ -126,7 +126,7 @@ function testAlterRemoveRange() {
   /**
    * Tests that we can do basic alters on subqueries.
    */
-  function testSimpleAlterSubquery() {
+  public function testSimpleAlterSubquery() {
     // Create a sub-query with an alter tag.
     $subquery = db_select('test', 'p');
     $subquery->addField('p', 'name');
diff --git a/core/tests/Drupal/KernelTests/Core/Database/BasicSyntaxTest.php b/core/tests/Drupal/KernelTests/Core/Database/BasicSyntaxTest.php
index c595e8f762568deba87f61369b6e72fa824362dc..53a87b7dbf9c3e55308aae40b86200ffd7ee96d2 100644
--- a/core/tests/Drupal/KernelTests/Core/Database/BasicSyntaxTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Database/BasicSyntaxTest.php
@@ -15,7 +15,7 @@ class BasicSyntaxTest extends DatabaseTestBase {
   /**
    * Tests string concatenation.
    */
-  function testConcatLiterals() {
+  public function testConcatLiterals() {
     $result = db_query('SELECT CONCAT(:a1, CONCAT(:a2, CONCAT(:a3, CONCAT(:a4, :a5))))', [
       ':a1' => 'This',
       ':a2' => ' ',
@@ -29,7 +29,7 @@ function testConcatLiterals() {
   /**
    * Tests string concatenation with field values.
    */
-  function testConcatFields() {
+  public function testConcatFields() {
     $result = db_query('SELECT CONCAT(:a1, CONCAT(name, CONCAT(:a2, CONCAT(age, :a3)))) FROM {test} WHERE age = :age', [
       ':a1' => 'The age of ',
       ':a2' => ' is ',
@@ -42,7 +42,7 @@ function testConcatFields() {
   /**
    * Tests string concatenation with separator.
    */
-  function testConcatWsLiterals() {
+  public function testConcatWsLiterals() {
     $result = db_query("SELECT CONCAT_WS(', ', :a1, NULL, :a2, :a3, :a4)", [
       ':a1' => 'Hello',
       ':a2' => NULL,
@@ -55,7 +55,7 @@ function testConcatWsLiterals() {
   /**
    * Tests string concatenation with separator, with field values.
    */
-  function testConcatWsFields() {
+  public function testConcatWsFields() {
     $result = db_query("SELECT CONCAT_WS('-', :a1, name, :a2, age) FROM {test} WHERE age = :age", [
       ':a1' => 'name',
       ':a2' => 'age',
@@ -67,7 +67,7 @@ function testConcatWsFields() {
   /**
    * Tests escaping of LIKE wildcards.
    */
-  function testLikeEscape() {
+  public function testLikeEscape() {
     db_insert('test')
       ->fields([
         'name' => 'Ring_',
@@ -93,7 +93,7 @@ function testLikeEscape() {
   /**
    * Tests a LIKE query containing a backslash.
    */
-  function testLikeBackslash() {
+  public function testLikeBackslash() {
     db_insert('test')
       ->fields(['name'])
       ->values([
diff --git a/core/tests/Drupal/KernelTests/Core/Database/CaseSensitivityTest.php b/core/tests/Drupal/KernelTests/Core/Database/CaseSensitivityTest.php
index 24a18729e9f6f30d3ff82c70906ca04f773257dd..c3e766fab45d40d72e600f7d0aa93b3b13a36368 100644
--- a/core/tests/Drupal/KernelTests/Core/Database/CaseSensitivityTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Database/CaseSensitivityTest.php
@@ -11,7 +11,7 @@ class CaseSensitivityTest extends DatabaseTestBase {
   /**
    * Tests BINARY collation in MySQL.
    */
-  function testCaseSensitiveInsert() {
+  public function testCaseSensitiveInsert() {
     $num_records_before = db_query('SELECT COUNT(*) FROM {test}')->fetchField();
 
     db_insert('test')
diff --git a/core/tests/Drupal/KernelTests/Core/Database/ConnectionTest.php b/core/tests/Drupal/KernelTests/Core/Database/ConnectionTest.php
index 5a8444a18cca0e6eb666fbf0986ff4b81410eea9..e95afe0387d9aabc756ee0f110c4f870979f17dd 100644
--- a/core/tests/Drupal/KernelTests/Core/Database/ConnectionTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Database/ConnectionTest.php
@@ -15,7 +15,7 @@ class ConnectionTest extends DatabaseTestBase {
   /**
    * Tests that connections return appropriate connection objects.
    */
-  function testConnectionRouting() {
+  public function testConnectionRouting() {
     // Clone the primary credentials to a replica connection.
     // Note this will result in two independent connection objects that happen
     // to point to the same place.
@@ -49,7 +49,7 @@ function testConnectionRouting() {
   /**
    * Tests that connections return appropriate connection objects.
    */
-  function testConnectionRoutingOverride() {
+  public function testConnectionRoutingOverride() {
     // Clone the primary credentials to a replica connection.
     // Note this will result in two independent connection objects that happen
     // to point to the same place.
@@ -67,7 +67,7 @@ function testConnectionRoutingOverride() {
   /**
    * Tests the closing of a database connection.
    */
-  function testConnectionClosing() {
+  public function testConnectionClosing() {
     // Open the default target so we have an object to compare.
     $db1 = Database::getConnection('default', 'default');
 
@@ -82,7 +82,7 @@ function testConnectionClosing() {
   /**
    * Tests the connection options of the active database.
    */
-  function testConnectionOptions() {
+  public function testConnectionOptions() {
     $connection_info = Database::getConnectionInfo('default');
 
     // Be sure we're connected to the default database.
diff --git a/core/tests/Drupal/KernelTests/Core/Database/ConnectionUnitTest.php b/core/tests/Drupal/KernelTests/Core/Database/ConnectionUnitTest.php
index cd5dcd4b7826e7a669b2101713ff545f90358742..6edcef821aa87b4dd437585d601e8f0ca79e7be5 100644
--- a/core/tests/Drupal/KernelTests/Core/Database/ConnectionUnitTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Database/ConnectionUnitTest.php
@@ -94,7 +94,7 @@ protected function assertNoConnection($id) {
    *
    * @todo getConnectionID() executes a query.
    */
-  function testOpenClose() {
+  public function testOpenClose() {
     if ($this->skipTest) {
       return;
     }
@@ -118,7 +118,7 @@ function testOpenClose() {
   /**
    * Tests Database::closeConnection() with a query.
    */
-  function testOpenQueryClose() {
+  public function testOpenQueryClose() {
     if ($this->skipTest) {
       return;
     }
@@ -145,7 +145,7 @@ function testOpenQueryClose() {
   /**
    * Tests Database::closeConnection() with a query and custom prefetch method.
    */
-  function testOpenQueryPrefetchClose() {
+  public function testOpenQueryPrefetchClose() {
     if ($this->skipTest) {
       return;
     }
@@ -172,7 +172,7 @@ function testOpenQueryPrefetchClose() {
   /**
    * Tests Database::closeConnection() with a select query.
    */
-  function testOpenSelectQueryClose() {
+  public function testOpenSelectQueryClose() {
     if ($this->skipTest) {
       return;
     }
diff --git a/core/tests/Drupal/KernelTests/Core/Database/DatabaseTestBase.php b/core/tests/Drupal/KernelTests/Core/Database/DatabaseTestBase.php
index 7781a9080b77e22e6d1e7cfc1c9c34a742c2f1c3..6fcfaa44aded83c9c2657b331d1e466715b1cd33 100644
--- a/core/tests/Drupal/KernelTests/Core/Database/DatabaseTestBase.php
+++ b/core/tests/Drupal/KernelTests/Core/Database/DatabaseTestBase.php
@@ -34,7 +34,7 @@ protected function setUp() {
   /**
    * Sets up tables for NULL handling.
    */
-  function ensureSampleDataNull() {
+  public function ensureSampleDataNull() {
     db_insert('test_null')
       ->fields(['name', 'age'])
       ->values([
@@ -55,7 +55,7 @@ function ensureSampleDataNull() {
   /**
    * Sets up our sample data.
    */
-  static function addSampleData() {
+  public static function addSampleData() {
     // We need the IDs, so we can't use a multi-insert here.
     $john = db_insert('test')
       ->fields([
diff --git a/core/tests/Drupal/KernelTests/Core/Database/DeleteTruncateTest.php b/core/tests/Drupal/KernelTests/Core/Database/DeleteTruncateTest.php
index 37dbab11e3b470de7cd23bc7809a8df223e83e08..8d736613c629b8751d551124eb3e168006ba0611 100644
--- a/core/tests/Drupal/KernelTests/Core/Database/DeleteTruncateTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Database/DeleteTruncateTest.php
@@ -20,7 +20,7 @@ class DeleteTruncateTest extends DatabaseTestBase {
   /**
    * Confirms that we can use a subselect in a delete successfully.
    */
-  function testSubselectDelete() {
+  public function testSubselectDelete() {
     $num_records_before = db_query('SELECT COUNT(*) FROM {test_task}')->fetchField();
     $pid_to_delete = db_query("SELECT * FROM {test_task} WHERE task = 'sleep'")->fetchField();
 
@@ -41,7 +41,7 @@ function testSubselectDelete() {
   /**
    * Confirms that we can delete a single record successfully.
    */
-  function testSimpleDelete() {
+  public function testSimpleDelete() {
     $num_records_before = db_query('SELECT COUNT(*) FROM {test}')->fetchField();
 
     $num_deleted = db_delete('test')
@@ -56,7 +56,7 @@ function testSimpleDelete() {
   /**
    * Confirms that we can truncate a whole table successfully.
    */
-  function testTruncate() {
+  public function testTruncate() {
     $num_records_before = db_query("SELECT COUNT(*) FROM {test}")->fetchField();
     $this->assertTrue($num_records_before > 0, 'The table is not empty.');
 
@@ -69,7 +69,7 @@ function testTruncate() {
   /**
    * Confirms that we can delete a single special column name record successfully.
    */
-  function testSpecialColumnDelete() {
+  public function testSpecialColumnDelete() {
     $num_records_before = db_query('SELECT COUNT(*) FROM {test_special_columns}')->fetchField();
 
     $num_deleted = db_delete('test_special_columns')
diff --git a/core/tests/Drupal/KernelTests/Core/Database/FetchTest.php b/core/tests/Drupal/KernelTests/Core/Database/FetchTest.php
index a29811dbd4d6723d168c7cca8c206d2d7d456f4f..e55590e7edb5a93978dd42164171d6d3035195c7 100644
--- a/core/tests/Drupal/KernelTests/Core/Database/FetchTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Database/FetchTest.php
@@ -18,7 +18,7 @@ class FetchTest extends DatabaseTestBase {
   /**
    * Confirms that we can fetch a record properly in default object mode.
    */
-  function testQueryFetchDefault() {
+  public function testQueryFetchDefault() {
     $records = [];
     $result = db_query('SELECT name FROM {test} WHERE age = :age', [':age' => 25]);
     $this->assertTrue($result instanceof StatementInterface, 'Result set is a Drupal statement object.');
@@ -34,7 +34,7 @@ function testQueryFetchDefault() {
   /**
    * Confirms that we can fetch a record to an object explicitly.
    */
-  function testQueryFetchObject() {
+  public function testQueryFetchObject() {
     $records = [];
     $result = db_query('SELECT name FROM {test} WHERE age = :age', [':age' => 25], ['fetch' => \PDO::FETCH_OBJ]);
     foreach ($result as $record) {
@@ -49,7 +49,7 @@ function testQueryFetchObject() {
   /**
    * Confirms that we can fetch a record to an associative array explicitly.
    */
-  function testQueryFetchArray() {
+  public function testQueryFetchArray() {
     $records = [];
     $result = db_query('SELECT name FROM {test} WHERE age = :age', [':age' => 25], ['fetch' => \PDO::FETCH_ASSOC]);
     foreach ($result as $record) {
@@ -67,7 +67,7 @@ function testQueryFetchArray() {
    *
    * @see \Drupal\system\Tests\Database\FakeRecord
    */
-  function testQueryFetchClass() {
+  public function testQueryFetchClass() {
     $records = [];
     $result = db_query('SELECT name FROM {test} WHERE age = :age', [':age' => 25], ['fetch' => 'Drupal\system\Tests\Database\FakeRecord']);
     foreach ($result as $record) {
@@ -83,7 +83,7 @@ function testQueryFetchClass() {
   /**
    * Confirms that we can fetch a record into an indexed array explicitly.
    */
-  function testQueryFetchNum() {
+  public function testQueryFetchNum() {
     $records = [];
     $result = db_query('SELECT name FROM {test} WHERE age = :age', [':age' => 25], ['fetch' => \PDO::FETCH_NUM]);
     foreach ($result as $record) {
@@ -99,7 +99,7 @@ function testQueryFetchNum() {
   /**
    * Confirms that we can fetch a record into a doubly-keyed array explicitly.
    */
-  function testQueryFetchBoth() {
+  public function testQueryFetchBoth() {
     $records = [];
     $result = db_query('SELECT name FROM {test} WHERE age = :age', [':age' => 25], ['fetch' => \PDO::FETCH_BOTH]);
     foreach ($result as $record) {
@@ -129,7 +129,7 @@ public function testQueryFetchAllColumn() {
   /**
    * Confirms that we can fetch an entire column of a result set at once.
    */
-  function testQueryFetchCol() {
+  public function testQueryFetchCol() {
     $result = db_query('SELECT name FROM {test} WHERE age > :age', [':age' => 25]);
     $column = $result->fetchCol();
     $this->assertIdentical(count($column), 3, 'fetchCol() returns the right number of records.');
diff --git a/core/tests/Drupal/KernelTests/Core/Database/InsertDefaultsTest.php b/core/tests/Drupal/KernelTests/Core/Database/InsertDefaultsTest.php
index 0cf1eba5c33cd6e3882b7bf160a117e471601718..5b6c03e92784cffdd8ce611e900a33b09cdb8cf5 100644
--- a/core/tests/Drupal/KernelTests/Core/Database/InsertDefaultsTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Database/InsertDefaultsTest.php
@@ -14,7 +14,7 @@ class InsertDefaultsTest extends DatabaseTestBase {
   /**
    * Tests that we can run a query that uses default values for everything.
    */
-  function testDefaultInsert() {
+  public function testDefaultInsert() {
     $query = db_insert('test')->useDefaults(['job']);
     $id = $query->execute();
 
@@ -27,7 +27,7 @@ function testDefaultInsert() {
   /**
    * Tests that no action will be preformed if no fields are specified.
    */
-  function testDefaultEmptyInsert() {
+  public function testDefaultEmptyInsert() {
     $num_records_before = (int) db_query('SELECT COUNT(*) FROM {test}')->fetchField();
 
     try {
@@ -46,7 +46,7 @@ function testDefaultEmptyInsert() {
   /**
    * Tests that we can insert fields with values and defaults in the same query.
    */
-  function testDefaultInsertWithFields() {
+  public function testDefaultInsertWithFields() {
     $query = db_insert('test')
       ->fields(['name' => 'Bob'])
       ->useDefaults(['job']);
diff --git a/core/tests/Drupal/KernelTests/Core/Database/InsertLobTest.php b/core/tests/Drupal/KernelTests/Core/Database/InsertLobTest.php
index ca4273e7ff8444b6c51865c4bb05307d5f233c40..e7a3107a87607d03c264ccef335b1b3d987b33a3 100644
--- a/core/tests/Drupal/KernelTests/Core/Database/InsertLobTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Database/InsertLobTest.php
@@ -12,7 +12,7 @@ class InsertLobTest extends DatabaseTestBase {
   /**
    * Tests that we can insert a single blob field successfully.
    */
-  function testInsertOneBlob() {
+  public function testInsertOneBlob() {
     $data = "This is\000a test.";
     $this->assertTrue(strlen($data) === 15, 'Test data contains a NULL.');
     $id = db_insert('test_one_blob')
@@ -25,7 +25,7 @@ function testInsertOneBlob() {
   /**
    * Tests that we can insert multiple blob fields in the same query.
    */
-  function testInsertMultipleBlob() {
+  public function testInsertMultipleBlob() {
     $id = db_insert('test_two_blobs')
       ->fields([
         'blob1' => 'This is',
diff --git a/core/tests/Drupal/KernelTests/Core/Database/InsertTest.php b/core/tests/Drupal/KernelTests/Core/Database/InsertTest.php
index 0c72d2eb6e14bc138af5ed049e6a7c7137795356..1c2c21df82df5daccb3e88891f777aec7928022f 100644
--- a/core/tests/Drupal/KernelTests/Core/Database/InsertTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Database/InsertTest.php
@@ -12,7 +12,7 @@ class InsertTest extends DatabaseTestBase {
   /**
    * Tests very basic insert functionality.
    */
-  function testSimpleInsert() {
+  public function testSimpleInsert() {
     $num_records_before = db_query('SELECT COUNT(*) FROM {test}')->fetchField();
 
     $query = db_insert('test');
@@ -34,7 +34,7 @@ function testSimpleInsert() {
   /**
    * Tests that we can insert multiple records in one query object.
    */
-  function testMultiInsert() {
+  public function testMultiInsert() {
     $num_records_before = (int) db_query('SELECT COUNT(*) FROM {test}')->fetchField();
 
     $query = db_insert('test');
@@ -73,7 +73,7 @@ function testMultiInsert() {
   /**
    * Tests that an insert object can be reused with new data after it executes.
    */
-  function testRepeatedInsert() {
+  public function testRepeatedInsert() {
     $num_records_before = db_query('SELECT COUNT(*) FROM {test}')->fetchField();
 
     $query = db_insert('test');
@@ -115,7 +115,7 @@ function testRepeatedInsert() {
   /**
    * Tests that we can specify fields without values and specify values later.
    */
-  function testInsertFieldOnlyDefinition() {
+  public function testInsertFieldOnlyDefinition() {
     // This is useful for importers, when we want to create a query and define
     // its fields once, then loop over a multi-insert execution.
     db_insert('test')
@@ -135,7 +135,7 @@ function testInsertFieldOnlyDefinition() {
   /**
    * Tests that inserts return the proper auto-increment ID.
    */
-  function testInsertLastInsertID() {
+  public function testInsertLastInsertID() {
     $id = db_insert('test')
       ->fields([
         'name' => 'Larry',
@@ -149,7 +149,7 @@ function testInsertLastInsertID() {
   /**
    * Tests that the INSERT INTO ... SELECT (fields) ... syntax works.
    */
-  function testInsertSelectFields() {
+  public function testInsertSelectFields() {
     $query = db_select('test_people', 'tp');
     // The query builder will always append expressions after fields.
     // Add the expression first to test that the insert fields are correctly
@@ -175,7 +175,7 @@ function testInsertSelectFields() {
   /**
    * Tests that the INSERT INTO ... SELECT * ... syntax works.
    */
-  function testInsertSelectAll() {
+  public function testInsertSelectAll() {
     $query = db_select('test_people', 'tp')
       ->fields('tp')
       ->condition('tp.name', 'Meredith');
@@ -196,7 +196,7 @@ function testInsertSelectAll() {
   /**
    * Tests that we can INSERT INTO a special named column.
    */
-  function testSpecialColumnInsert() {
+  public function testSpecialColumnInsert() {
     $id = db_insert('test_special_columns')
       ->fields([
         'id' => 2,
diff --git a/core/tests/Drupal/KernelTests/Core/Database/InvalidDataTest.php b/core/tests/Drupal/KernelTests/Core/Database/InvalidDataTest.php
index bf64bc8d0c5e538990c9187146e8a7607bb31a50..7b08b404756c5c7be6af678b556d77df9bdd1898 100644
--- a/core/tests/Drupal/KernelTests/Core/Database/InvalidDataTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Database/InvalidDataTest.php
@@ -14,7 +14,7 @@ class InvalidDataTest extends DatabaseTestBase {
   /**
    * Tests aborting of traditional SQL database systems with invalid data.
    */
-  function testInsertDuplicateData() {
+  public function testInsertDuplicateData() {
     // Try to insert multiple records where at least one has bad data.
     try {
       db_insert('test')
diff --git a/core/tests/Drupal/KernelTests/Core/Database/LargeQueryTest.php b/core/tests/Drupal/KernelTests/Core/Database/LargeQueryTest.php
index a0aaa14c6e347413793bbb064a8a09097081b8fd..a93d1fc80191c932f8787e8ec9d37d979ab3283f 100644
--- a/core/tests/Drupal/KernelTests/Core/Database/LargeQueryTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Database/LargeQueryTest.php
@@ -16,7 +16,7 @@ class LargeQueryTest extends DatabaseTestBase {
   /**
    * Tests truncation of messages when max_allowed_packet exception occurs.
    */
-  function testMaxAllowedPacketQueryTruncating() {
+  public function testMaxAllowedPacketQueryTruncating() {
     // This test only makes sense if we are running on a MySQL database.
     // Test if we are.
     $database = Database::getConnectionInfo('default');
diff --git a/core/tests/Drupal/KernelTests/Core/Database/LoggingTest.php b/core/tests/Drupal/KernelTests/Core/Database/LoggingTest.php
index ac10fe876144b0d7536608863575f58802bf9c4d..0216d3ed564c107eb4c0a8571d1a723d3fa01268 100644
--- a/core/tests/Drupal/KernelTests/Core/Database/LoggingTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Database/LoggingTest.php
@@ -14,7 +14,7 @@ class LoggingTest extends DatabaseTestBase {
   /**
    * Tests that we can log the existence of a query.
    */
-  function testEnableLogging() {
+  public function testEnableLogging() {
     Database::startLog('testing');
 
     db_query('SELECT name FROM {test} WHERE age > :age', [':age' => 25])->fetchCol();
@@ -35,7 +35,7 @@ function testEnableLogging() {
   /**
    * Tests that we can run two logs in parallel.
    */
-  function testEnableMultiLogging() {
+  public function testEnableMultiLogging() {
     Database::startLog('testing1');
 
     db_query('SELECT name FROM {test} WHERE age > :age', [':age' => 25])->fetchCol();
@@ -54,7 +54,7 @@ function testEnableMultiLogging() {
   /**
    * Tests logging queries against multiple targets on the same connection.
    */
-  function testEnableTargetLogging() {
+  public function testEnableTargetLogging() {
     // Clone the primary credentials to a replica connection and to another fake
     // connection.
     $connection_info = Database::getConnectionInfo('default');
@@ -80,7 +80,7 @@ function testEnableTargetLogging() {
    * a fake target so the query should fall back to running on the default
    * target.
    */
-  function testEnableTargetLoggingNoTarget() {
+  public function testEnableTargetLoggingNoTarget() {
     Database::startLog('testing1');
 
     db_query('SELECT name FROM {test} WHERE age > :age', [':age' => 25])->fetchCol();
@@ -102,7 +102,7 @@ function testEnableTargetLoggingNoTarget() {
   /**
    * Tests that we can log queries separately on different connections.
    */
-  function testEnableMultiConnectionLogging() {
+  public function testEnableMultiConnectionLogging() {
     // Clone the primary credentials to a fake connection.
     // That both connections point to the same physical database is irrelevant.
     $connection_info = Database::getConnectionInfo('default');
@@ -129,7 +129,7 @@ function testEnableMultiConnectionLogging() {
   /**
    * Tests that getLog with a wrong key return an empty array.
    */
-  function testGetLoggingWrongKey() {
+  public function testGetLoggingWrongKey() {
     $result = Database::getLog('wrong');
 
     $this->assertEqual($result, [], 'The function getLog with a wrong key returns an empty array.');
diff --git a/core/tests/Drupal/KernelTests/Core/Database/MergeTest.php b/core/tests/Drupal/KernelTests/Core/Database/MergeTest.php
index 853e5b2f0cd56368276263150c05c432f87bf82c..9a5688c5df14964733e9d31cb6eb7b4afbc27c2f 100644
--- a/core/tests/Drupal/KernelTests/Core/Database/MergeTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Database/MergeTest.php
@@ -15,7 +15,7 @@ class MergeTest extends DatabaseTestBase {
   /**
    * Confirms that we can merge-insert a record successfully.
    */
-  function testMergeInsert() {
+  public function testMergeInsert() {
     $num_records_before = db_query('SELECT COUNT(*) FROM {test_people}')->fetchField();
 
     $result = db_merge('test_people')
@@ -40,7 +40,7 @@ function testMergeInsert() {
   /**
    * Confirms that we can merge-update a record successfully.
    */
-  function testMergeUpdate() {
+  public function testMergeUpdate() {
     $num_records_before = db_query('SELECT COUNT(*) FROM {test_people}')->fetchField();
 
     $result = db_merge('test_people')
@@ -68,7 +68,7 @@ function testMergeUpdate() {
    * This test varies from the previous test because it manually defines which
    * fields are inserted, and which fields are updated.
    */
-  function testMergeUpdateExcept() {
+  public function testMergeUpdateExcept() {
     $num_records_before = db_query('SELECT COUNT(*) FROM {test_people}')->fetchField();
 
     db_merge('test_people')
@@ -89,7 +89,7 @@ function testMergeUpdateExcept() {
   /**
    * Confirms that we can merge-update a record, with alternate replacement.
    */
-  function testMergeUpdateExplicit() {
+  public function testMergeUpdateExplicit() {
     $num_records_before = db_query('SELECT COUNT(*) FROM {test_people}')->fetchField();
 
     db_merge('test_people')
@@ -115,7 +115,7 @@ function testMergeUpdateExplicit() {
   /**
    * Confirms that we can merge-update a record successfully, with expressions.
    */
-  function testMergeUpdateExpression() {
+  public function testMergeUpdateExpression() {
     $num_records_before = db_query('SELECT COUNT(*) FROM {test_people}')->fetchField();
 
     $age_before = db_query('SELECT age FROM {test_people} WHERE job = :job', [':job' => 'Speaker'])->fetchField();
@@ -144,7 +144,7 @@ function testMergeUpdateExpression() {
   /**
    * Tests that we can merge-insert without any update fields.
    */
-  function testMergeInsertWithoutUpdate() {
+  public function testMergeInsertWithoutUpdate() {
     $num_records_before = db_query('SELECT COUNT(*) FROM {test_people}')->fetchField();
 
     db_merge('test_people')
@@ -163,7 +163,7 @@ function testMergeInsertWithoutUpdate() {
   /**
    * Confirms that we can merge-update without any update fields.
    */
-  function testMergeUpdateWithoutUpdate() {
+  public function testMergeUpdateWithoutUpdate() {
     $num_records_before = db_query('SELECT COUNT(*) FROM {test_people}')->fetchField();
 
     db_merge('test_people')
@@ -195,7 +195,7 @@ function testMergeUpdateWithoutUpdate() {
   /**
    * Tests that an invalid merge query throws an exception.
    */
-  function testInvalidMerge() {
+  public function testInvalidMerge() {
     try {
       // This query will fail because there is no key field specified.
       // Normally it would throw an exception but we are suppressing it with
diff --git a/core/tests/Drupal/KernelTests/Core/Database/NextIdTest.php b/core/tests/Drupal/KernelTests/Core/Database/NextIdTest.php
index 5c0239f449b3504a79c5b173255271fc4ebc36ee..129d50ba0030430290f58d26a67edd4841f297bc 100644
--- a/core/tests/Drupal/KernelTests/Core/Database/NextIdTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Database/NextIdTest.php
@@ -25,7 +25,7 @@ protected function setUp() {
   /**
    * Tests that the sequences API works.
    */
-  function testDbNextId() {
+  public function testDbNextId() {
     $first = db_next_id();
     $second = db_next_id();
     // We can test for exact increase in here because we know there is no
diff --git a/core/tests/Drupal/KernelTests/Core/Database/PrefixInfoTest.php b/core/tests/Drupal/KernelTests/Core/Database/PrefixInfoTest.php
index 131fb7adfa8a7c286996aa5c346a53d97aea9d67..16fd05336b690f2cf99a0dfb0be16c302a19b933 100644
--- a/core/tests/Drupal/KernelTests/Core/Database/PrefixInfoTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Database/PrefixInfoTest.php
@@ -20,7 +20,7 @@ class PrefixInfoTest extends DatabaseTestBase {
    * The other two by Drupal core supported databases do not have this variable
    * set in the return array.
    */
-  function testGetPrefixInfo() {
+  public function testGetPrefixInfo() {
     $connection_info = Database::getConnectionInfo('default');
     if ($connection_info['default']['driver'] == 'mysql') {
       // Copy the default connection info to the 'extra' key.
diff --git a/core/tests/Drupal/KernelTests/Core/Database/QueryTest.php b/core/tests/Drupal/KernelTests/Core/Database/QueryTest.php
index 966f96f667ce1e78081c800624a895cd32547577..04ba8ad135c71a6e3005af42744dc4cf4d68dc6a 100644
--- a/core/tests/Drupal/KernelTests/Core/Database/QueryTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Database/QueryTest.php
@@ -12,7 +12,7 @@ class QueryTest extends DatabaseTestBase {
   /**
    * Tests that we can pass an array of values directly in the query.
    */
-  function testArraySubstitution() {
+  public function testArraySubstitution() {
     $names = db_query('SELECT name FROM {test} WHERE age IN ( :ages[] ) ORDER BY age', [':ages[]' => [25, 26, 27]])->fetchAll();
     $this->assertEqual(count($names), 3, 'Correct number of names returned');
 
@@ -23,7 +23,7 @@ function testArraySubstitution() {
   /**
    * Tests that we can not pass a scalar value when an array is expected.
    */
-  function testScalarSubstitution() {
+  public function testScalarSubstitution() {
     try {
       $names = db_query('SELECT name FROM {test} WHERE age IN ( :ages[] ) ORDER BY age', [':ages[]' => 25])->fetchAll();
       $this->fail('Array placeholder with scalar argument should result in an exception.');
diff --git a/core/tests/Drupal/KernelTests/Core/Database/RangeQueryTest.php b/core/tests/Drupal/KernelTests/Core/Database/RangeQueryTest.php
index 44c25350034f6fe290190cdf3b3769bab032dfe9..16b27e6e6d0020ab1113338e5ee3a166dc7c5b29 100644
--- a/core/tests/Drupal/KernelTests/Core/Database/RangeQueryTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Database/RangeQueryTest.php
@@ -19,7 +19,7 @@ class RangeQueryTest extends DatabaseTestBase {
   /**
    * Confirms that range queries work and return the correct result.
    */
-  function testRangeQuery() {
+  public function testRangeQuery() {
     // Test if return correct number of rows.
     $range_rows = db_query_range("SELECT name FROM {test} ORDER BY name", 1, 3)->fetchAll();
     $this->assertEqual(count($range_rows), 3, 'Range query work and return correct number of rows.');
diff --git a/core/tests/Drupal/KernelTests/Core/Database/RegressionTest.php b/core/tests/Drupal/KernelTests/Core/Database/RegressionTest.php
index 29a966a08eee872c1eaea33f22c4caf78ca7ed9b..db4c7deda6e345ec1b803f24aa64c777ebf074ce 100644
--- a/core/tests/Drupal/KernelTests/Core/Database/RegressionTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Database/RegressionTest.php
@@ -19,7 +19,7 @@ class RegressionTest extends DatabaseTestBase {
   /**
    * Ensures that non-ASCII UTF-8 data is stored in the database properly.
    */
-  function testRegression_310447() {
+  public function testRegression_310447() {
     // That's a 255 character UTF-8 string.
     $job = str_repeat("é", 255);
     db_insert('test')
@@ -36,7 +36,7 @@ function testRegression_310447() {
   /**
    * Tests the db_table_exists() function.
    */
-  function testDBTableExists() {
+  public function testDBTableExists() {
     $this->assertIdentical(TRUE, db_table_exists('test'), 'Returns true for existent table.');
     $this->assertIdentical(FALSE, db_table_exists('nosuchtable'), 'Returns false for nonexistent table.');
   }
@@ -44,7 +44,7 @@ function testDBTableExists() {
   /**
    * Tests the db_field_exists() function.
    */
-  function testDBFieldExists() {
+  public function testDBFieldExists() {
     $this->assertIdentical(TRUE, db_field_exists('test', 'name'), 'Returns true for existent column.');
     $this->assertIdentical(FALSE, db_field_exists('test', 'nosuchcolumn'), 'Returns false for nonexistent column.');
   }
@@ -52,7 +52,7 @@ function testDBFieldExists() {
   /**
    * Tests the db_index_exists() function.
    */
-  function testDBIndexExists() {
+  public function testDBIndexExists() {
     $this->assertIdentical(TRUE, db_index_exists('test', 'ages'), 'Returns true for existent index.');
     $this->assertIdentical(FALSE, db_index_exists('test', 'nosuchindex'), 'Returns false for nonexistent index.');
   }
diff --git a/core/tests/Drupal/KernelTests/Core/Database/SchemaTest.php b/core/tests/Drupal/KernelTests/Core/Database/SchemaTest.php
index 346c4ce0eac1048c5beb3973c54bd80d5408428f..ce64319c937d9b72e92b250a52c292d952032261 100644
--- a/core/tests/Drupal/KernelTests/Core/Database/SchemaTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Database/SchemaTest.php
@@ -24,7 +24,7 @@ class SchemaTest extends KernelTestBase {
   /**
    * Tests database interactions.
    */
-  function testSchema() {
+  public function testSchema() {
     // Try creating a table.
     $table_specification = [
       'description' => 'Schema table description may contain "quotes" and could be long—very long indeed.',
@@ -240,7 +240,7 @@ function testSchema() {
    *
    * @see \Drupal\Core\Database\Driver\mysql\Schema::getNormalizedIndexes()
    */
-  function testIndexLength() {
+  public function testIndexLength() {
     if (Database::getConnection()->databaseType() != 'mysql') {
       return;
     }
@@ -379,7 +379,7 @@ function testIndexLength() {
    * @return
    *   TRUE if the insert succeeded, FALSE otherwise.
    */
-  function tryInsert($table = 'test_table') {
+  public function tryInsert($table = 'test_table') {
     try {
       db_insert($table)
         ->fields(['id' => mt_rand(10, 20)])
@@ -401,7 +401,7 @@ function tryInsert($table = 'test_table') {
    * @param $column
    *   Optional column to test.
    */
-  function checkSchemaComment($description, $table, $column = NULL) {
+  public function checkSchemaComment($description, $table, $column = NULL) {
     if (method_exists(Database::getConnection()->schema(), 'getComment')) {
       $comment = Database::getConnection()->schema()->getComment($table, $column);
       // The schema comment truncation for mysql is different.
@@ -416,7 +416,7 @@ function checkSchemaComment($description, $table, $column = NULL) {
   /**
    * Tests creating unsigned columns and data integrity thereof.
    */
-  function testUnsignedColumns() {
+  public function testUnsignedColumns() {
     // First create the table with just a serial column.
     $table_name = 'unsigned_table';
     $table_spec = [
@@ -455,7 +455,7 @@ function testUnsignedColumns() {
    * @return
    *   TRUE if the insert succeeded, FALSE otherwise.
    */
-  function tryUnsignedInsert($table_name, $column_name) {
+  public function tryUnsignedInsert($table_name, $column_name) {
     try {
       db_insert($table_name)
         ->fields([$column_name => -1])
@@ -470,7 +470,7 @@ function tryUnsignedInsert($table_name, $column_name) {
   /**
    * Tests adding columns to an existing table.
    */
-  function testSchemaAddField() {
+  public function testSchemaAddField() {
     // Test varchar types.
     foreach ([1, 32, 128, 256, 512] as $length) {
       $base_field_spec = [
@@ -653,7 +653,7 @@ protected function assertFieldCharacteristics($table_name, $field_name, $field_s
   /**
    * Tests changing columns between types.
    */
-  function testSchemaChangeField() {
+  public function testSchemaChangeField() {
     $field_specs = [
       ['type' => 'int', 'size' => 'normal', 'not null' => FALSE],
       ['type' => 'int', 'size' => 'normal', 'not null' => TRUE, 'initial' => 1, 'default' => 17],
diff --git a/core/tests/Drupal/KernelTests/Core/Database/SelectCloneTest.php b/core/tests/Drupal/KernelTests/Core/Database/SelectCloneTest.php
index 64e95d0b6dc74663aa3e6d967cffea7bcd8e6b80..30a4f1b9410852cfc23dead0b0e01a6ba805295c 100644
--- a/core/tests/Drupal/KernelTests/Core/Database/SelectCloneTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Database/SelectCloneTest.php
@@ -12,7 +12,7 @@ class SelectCloneTest extends DatabaseTestBase {
   /**
    * Test that subqueries as value within conditions are cloned properly.
    */
-  function testSelectConditionSubQueryCloning() {
+  public function testSelectConditionSubQueryCloning() {
     $subquery = db_select('test', 't');
     $subquery->addField('t', 'id', 'id');
     $subquery->condition('age', 28, '<');
diff --git a/core/tests/Drupal/KernelTests/Core/Database/SelectComplexTest.php b/core/tests/Drupal/KernelTests/Core/Database/SelectComplexTest.php
index 94ee755ab2f97bfbd275856104e2cfe6fbfc787f..cd3ec4a163840efc7dc38efc195ccde240829bba 100644
--- a/core/tests/Drupal/KernelTests/Core/Database/SelectComplexTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Database/SelectComplexTest.php
@@ -24,7 +24,7 @@ class SelectComplexTest extends DatabaseTestBase {
   /**
    * Tests simple JOIN statements.
    */
-  function testDefaultJoin() {
+  public function testDefaultJoin() {
     $query = db_select('test_task', 't');
     $people_alias = $query->join('test', 'p', 't.pid = p.id');
     $name_field = $query->addField($people_alias, 'name', 'name');
@@ -49,7 +49,7 @@ function testDefaultJoin() {
   /**
    * Tests LEFT OUTER joins.
    */
-  function testLeftOuterJoin() {
+  public function testLeftOuterJoin() {
     $query = db_select('test', 'p');
     $people_alias = $query->leftJoin('test_task', 't', 't.pid = p.id');
     $name_field = $query->addField('p', 'name', 'name');
@@ -73,7 +73,7 @@ function testLeftOuterJoin() {
   /**
    * Tests GROUP BY clauses.
    */
-  function testGroupBy() {
+  public function testGroupBy() {
     $query = db_select('test_task', 't');
     $count_field = $query->addExpression('COUNT(task)', 'num');
     $task_field = $query->addField('t', 'task');
@@ -109,7 +109,7 @@ function testGroupBy() {
   /**
    * Tests GROUP BY and HAVING clauses together.
    */
-  function testGroupByAndHaving() {
+  public function testGroupByAndHaving() {
     $query = db_select('test_task', 't');
     $count_field = $query->addExpression('COUNT(task)', 'num');
     $task_field = $query->addField('t', 'task');
@@ -145,7 +145,7 @@ function testGroupByAndHaving() {
    *
    * The SQL clause varies with the database.
    */
-  function testRange() {
+  public function testRange() {
     $query = db_select('test');
     $query->addField('test', 'name');
     $query->addField('test', 'age', 'age');
@@ -158,7 +158,7 @@ function testRange() {
   /**
    * Test whether the range property of a select clause can be undone.
    */
-  function testRangeUndo() {
+  public function testRangeUndo() {
     $query = db_select('test');
     $name_field = $query->addField('test', 'name');
     $age_field = $query->addField('test', 'age', 'age');
@@ -172,7 +172,7 @@ function testRangeUndo() {
   /**
    * Tests distinct queries.
    */
-  function testDistinct() {
+  public function testDistinct() {
     $query = db_select('test_task');
     $query->addField('test_task', 'task');
     $query->distinct();
@@ -184,7 +184,7 @@ function testDistinct() {
   /**
    * Tests that we can generate a count query from a built query.
    */
-  function testCountQuery() {
+  public function testCountQuery() {
     $query = db_select('test');
     $name_field = $query->addField('test', 'name');
     $age_field = $query->addField('test', 'age', 'age');
@@ -204,7 +204,7 @@ function testCountQuery() {
   /**
    * Tests having queries.
    */
-  function testHavingCountQuery() {
+  public function testHavingCountQuery() {
     $query = db_select('test')
       ->extend('Drupal\Core\Database\Query\PagerSelectExtender')
       ->groupBy('age')
@@ -218,7 +218,7 @@ function testHavingCountQuery() {
   /**
    * Tests that countQuery removes 'all_fields' statements and ordering clauses.
    */
-  function testCountQueryRemovals() {
+  public function testCountQueryRemovals() {
     $query = db_select('test');
     $query->fields('test');
     $query->orderBy('name');
@@ -249,7 +249,7 @@ function testCountQueryRemovals() {
   /**
    * Tests that countQuery properly removes fields and expressions.
    */
-  function testCountQueryFieldRemovals() {
+  public function testCountQueryFieldRemovals() {
     // countQuery should remove all fields and expressions, so this can be
     // tested by adding a non-existent field and expression: if it ends
     // up in the query, an error will be thrown. If not, it will return the
@@ -267,7 +267,7 @@ function testCountQueryFieldRemovals() {
   /**
    * Tests that we can generate a count query from a query with distinct.
    */
-  function testCountQueryDistinct() {
+  public function testCountQueryDistinct() {
     $query = db_select('test_task');
     $query->addField('test_task', 'task');
     $query->distinct();
@@ -280,7 +280,7 @@ function testCountQueryDistinct() {
   /**
    * Tests that we can generate a count query from a query with GROUP BY.
    */
-  function testCountQueryGroupBy() {
+  public function testCountQueryGroupBy() {
     $query = db_select('test_task');
     $query->addField('test_task', 'pid');
     $query->groupBy('pid');
@@ -305,7 +305,7 @@ function testCountQueryGroupBy() {
   /**
    * Confirms that we can properly nest conditional clauses.
    */
-  function testNestedConditions() {
+  public function testNestedConditions() {
     // This query should translate to:
     // "SELECT job FROM {test} WHERE name = 'Paul' AND (age = 26 OR age = 27)"
     // That should find only one record. Yes it's a non-optimal way of writing
@@ -322,7 +322,7 @@ function testNestedConditions() {
   /**
    * Confirms we can join on a single table twice with a dynamic alias.
    */
-  function testJoinTwice() {
+  public function testJoinTwice() {
     $query = db_select('test')->fields('test');
     $alias = $query->join('test', 'test', 'test.job = %alias.job');
     $query->addField($alias, 'name', 'othername');
@@ -336,7 +336,7 @@ function testJoinTwice() {
   /**
    * Tests that we can join on a query.
    */
-  function testJoinSubquery() {
+  public function testJoinSubquery() {
     $this->installSchema('system', 'sequences');
 
     $account = User::create([
@@ -376,7 +376,7 @@ function testJoinSubquery() {
   /**
    * Tests that rowCount() throws exception on SELECT query.
    */
-  function testSelectWithRowCount() {
+  public function testSelectWithRowCount() {
     $query = db_select('test');
     $query->addField('test', 'name');
     $result = $query->execute();
diff --git a/core/tests/Drupal/KernelTests/Core/Database/SelectOrderedTest.php b/core/tests/Drupal/KernelTests/Core/Database/SelectOrderedTest.php
index 53a311c6ca9cc434edbcfd4e14bd497119175158..5e81e08989cd9341fff8127d1601d4f12d13f937 100644
--- a/core/tests/Drupal/KernelTests/Core/Database/SelectOrderedTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Database/SelectOrderedTest.php
@@ -12,7 +12,7 @@ class SelectOrderedTest extends DatabaseTestBase {
   /**
    * Tests basic ORDER BY.
    */
-  function testSimpleSelectOrdered() {
+  public function testSimpleSelectOrdered() {
     $query = db_select('test');
     $query->addField('test', 'name');
     $age_field = $query->addField('test', 'age', 'age');
@@ -33,7 +33,7 @@ function testSimpleSelectOrdered() {
   /**
    * Tests multiple ORDER BY.
    */
-  function testSimpleSelectMultiOrdered() {
+  public function testSimpleSelectMultiOrdered() {
     $query = db_select('test');
     $query->addField('test', 'name');
     $age_field = $query->addField('test', 'age', 'age');
@@ -64,7 +64,7 @@ function testSimpleSelectMultiOrdered() {
   /**
    * Tests ORDER BY descending.
    */
-  function testSimpleSelectOrderedDesc() {
+  public function testSimpleSelectOrderedDesc() {
     $query = db_select('test');
     $query->addField('test', 'name');
     $age_field = $query->addField('test', 'age', 'age');
diff --git a/core/tests/Drupal/KernelTests/Core/Database/SelectSubqueryTest.php b/core/tests/Drupal/KernelTests/Core/Database/SelectSubqueryTest.php
index d5f02375f3e757d3906f0858ea2531ee8969a32f..58a66289e20924030045b86aa5fd07ed69f0e4ed 100644
--- a/core/tests/Drupal/KernelTests/Core/Database/SelectSubqueryTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Database/SelectSubqueryTest.php
@@ -12,7 +12,7 @@ class SelectSubqueryTest extends DatabaseTestBase {
   /**
    * Tests that we can use a subquery in a FROM clause.
    */
-  function testFromSubquerySelect() {
+  public function testFromSubquerySelect() {
     // Create a subquery, which is just a normal query object.
     $subquery = db_select('test_task', 'tt');
     $subquery->addField('tt', 'pid', 'pid');
@@ -46,7 +46,7 @@ function testFromSubquerySelect() {
   /**
    * Tests that we can use a subquery in a FROM clause with a LIMIT.
    */
-  function testFromSubquerySelectWithLimit() {
+  public function testFromSubquerySelectWithLimit() {
     // Create a subquery, which is just a normal query object.
     $subquery = db_select('test_task', 'tt');
     $subquery->addField('tt', 'pid', 'pid');
@@ -72,7 +72,7 @@ function testFromSubquerySelectWithLimit() {
   /**
    * Tests that we can use a subquery with an IN operator in a WHERE clause.
    */
-  function testConditionSubquerySelect() {
+  public function testConditionSubquerySelect() {
     // Create a subquery, which is just a normal query object.
     $subquery = db_select('test_task', 'tt');
     $subquery->addField('tt', 'pid', 'pid');
@@ -95,7 +95,7 @@ function testConditionSubquerySelect() {
   /**
    * Test that we can use a subquery with a relational operator in a WHERE clause.
    */
-  function testConditionSubquerySelect2() {
+  public function testConditionSubquerySelect2() {
     // Create a subquery, which is just a normal query object.
     $subquery = db_select('test', 't2');
     $subquery->addExpression('AVG(t2.age)');
@@ -116,7 +116,7 @@ function testConditionSubquerySelect2() {
   /**
    * Test that we can use 2 subqueries with a relational operator in a WHERE clause.
    */
-  function testConditionSubquerySelect3() {
+  public function testConditionSubquerySelect3() {
     // Create subquery 1, which is just a normal query object.
     $subquery1 = db_select('test_task', 'tt');
     $subquery1->addExpression('AVG(tt.priority)');
@@ -146,7 +146,7 @@ function testConditionSubquerySelect3() {
    * the right hand side. The test query may not be that logical but that's due
    * to the limited amount of data and tables. 'Valid' use cases do exist :)
    */
-  function testConditionSubquerySelect4() {
+  public function testConditionSubquerySelect4() {
     // Create subquery 1, which is just a normal query object.
     $subquery1 = db_select('test_task', 'tt');
     $subquery1->addExpression('AVG(tt.priority)');
@@ -180,7 +180,7 @@ function testConditionSubquerySelect4() {
   /**
    * Tests that we can use a subquery in a JOIN clause.
    */
-  function testJoinSubquerySelect() {
+  public function testJoinSubquerySelect() {
     // Create a subquery, which is just a normal query object.
     $subquery = db_select('test_task', 'tt');
     $subquery->addField('tt', 'pid', 'pid');
@@ -207,7 +207,7 @@ function testJoinSubquerySelect() {
    * We essentially select all rows from the {test} table that have matching
    * rows in the {test_people} table based on the shared name column.
    */
-  function testExistsSubquerySelect() {
+  public function testExistsSubquerySelect() {
     // Put George into {test_people}.
     db_insert('test_people')
       ->fields([
@@ -237,7 +237,7 @@ function testExistsSubquerySelect() {
    * We essentially select all rows from the {test} table that don't have
    * matching rows in the {test_people} table based on the shared name column.
    */
-  function testNotExistsSubquerySelect() {
+  public function testNotExistsSubquerySelect() {
     // Put George into {test_people}.
     db_insert('test_people')
       ->fields([
diff --git a/core/tests/Drupal/KernelTests/Core/Database/SelectTest.php b/core/tests/Drupal/KernelTests/Core/Database/SelectTest.php
index 038224e9c0ce27c6b6c1a914337977e4f5755c4c..0d332d031411ccb5f21060c640b08c60101135c3 100644
--- a/core/tests/Drupal/KernelTests/Core/Database/SelectTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Database/SelectTest.php
@@ -14,7 +14,7 @@ class SelectTest extends DatabaseTestBase {
   /**
    * Tests rudimentary SELECT statements.
    */
-  function testSimpleSelect() {
+  public function testSimpleSelect() {
     $query = db_select('test');
     $query->addField('test', 'name');
     $query->addField('test', 'age', 'age');
@@ -26,7 +26,7 @@ function testSimpleSelect() {
   /**
    * Tests rudimentary SELECT statement with a COMMENT.
    */
-  function testSimpleComment() {
+  public function testSimpleComment() {
     $query = db_select('test')->comment('Testing query comments');
     $query->addField('test', 'name');
     $query->addField('test', 'age', 'age');
@@ -44,7 +44,7 @@ function testSimpleComment() {
   /**
    * Tests query COMMENT system against vulnerabilities.
    */
-  function testVulnerableComment() {
+  public function testVulnerableComment() {
     $query = db_select('test')->comment('Testing query comments */ SELECT nid FROM {node}; --');
     $query->addField('test', 'name');
     $query->addField('test', 'age', 'age');
@@ -68,7 +68,7 @@ function testVulnerableComment() {
   /**
    * Provides expected and input values for testVulnerableComment().
    */
-  function makeCommentsProvider() {
+  public function makeCommentsProvider() {
     return [
       [
         '/*  */ ',
@@ -99,7 +99,7 @@ function makeCommentsProvider() {
   /**
    * Tests basic conditionals on SELECT statements.
    */
-  function testSimpleSelectConditional() {
+  public function testSimpleSelectConditional() {
     $query = db_select('test');
     $name_field = $query->addField('test', 'name');
     $age_field = $query->addField('test', 'age', 'age');
@@ -119,7 +119,7 @@ function testSimpleSelectConditional() {
   /**
    * Tests SELECT statements with expressions.
    */
-  function testSimpleSelectExpression() {
+  public function testSimpleSelectExpression() {
     $query = db_select('test');
     $name_field = $query->addField('test', 'name');
     $age_field = $query->addExpression("age*2", 'double_age');
@@ -139,7 +139,7 @@ function testSimpleSelectExpression() {
   /**
    * Tests SELECT statements with multiple expressions.
    */
-  function testSimpleSelectExpressionMultiple() {
+  public function testSimpleSelectExpressionMultiple() {
     $query = db_select('test');
     $name_field = $query->addField('test', 'name');
     $age_double_field = $query->addExpression("age*2");
@@ -161,7 +161,7 @@ function testSimpleSelectExpressionMultiple() {
   /**
    * Tests adding multiple fields to a SELECT statement at the same time.
    */
-  function testSimpleSelectMultipleFields() {
+  public function testSimpleSelectMultipleFields() {
     $record = db_select('test')
       ->fields('test', ['id', 'name', 'age', 'job'])
       ->condition('age', 27)
@@ -184,7 +184,7 @@ function testSimpleSelectMultipleFields() {
   /**
    * Tests adding all fields from a given table to a SELECT statement.
    */
-  function testSimpleSelectAllFields() {
+  public function testSimpleSelectAllFields() {
     $record = db_select('test')
       ->fields('test')
       ->condition('age', 27)
@@ -207,7 +207,7 @@ function testSimpleSelectAllFields() {
   /**
    * Tests that a comparison with NULL is always FALSE.
    */
-  function testNullCondition() {
+  public function testNullCondition() {
     $this->ensureSampleDataNull();
 
     $names = db_select('test_null', 'tn')
@@ -221,7 +221,7 @@ function testNullCondition() {
   /**
    * Tests that we can find a record with a NULL value.
    */
-  function testIsNullCondition() {
+  public function testIsNullCondition() {
     $this->ensureSampleDataNull();
 
     $names = db_select('test_null', 'tn')
@@ -236,7 +236,7 @@ function testIsNullCondition() {
   /**
    * Tests that we can find a record without a NULL value.
    */
-  function testIsNotNullCondition() {
+  public function testIsNotNullCondition() {
     $this->ensureSampleDataNull();
 
     $names = db_select('test_null', 'tn')
@@ -256,7 +256,7 @@ function testIsNotNullCondition() {
    * This is semantically equal to UNION DISTINCT, so we don't explicitly test
    * that.
    */
-  function testUnion() {
+  public function testUnion() {
     $query_1 = db_select('test', 't')
       ->fields('t', ['name'])
       ->condition('age', [27, 28], 'IN');
@@ -279,7 +279,7 @@ function testUnion() {
   /**
    * Tests that we can UNION ALL multiple SELECT queries together.
    */
-  function testUnionAll() {
+  public function testUnionAll() {
     $query_1 = db_select('test', 't')
       ->fields('t', ['name'])
       ->condition('age', [27, 28], 'IN');
@@ -303,7 +303,7 @@ function testUnionAll() {
   /**
    * Tests that we can get a count query for a UNION Select query.
    */
-  function testUnionCount() {
+  public function testUnionCount() {
     $query_1 = db_select('test', 't')
       ->fields('t', ['name', 'age'])
       ->condition('age', [27, 28], 'IN');
@@ -325,7 +325,7 @@ function testUnionCount() {
   /**
    * Tests that we can UNION multiple Select queries together and set the ORDER.
    */
-  function testUnionOrder() {
+  public function testUnionOrder() {
     // This gives George and Ringo.
     $query_1 = db_select('test', 't')
       ->fields('t', ['name'])
@@ -354,7 +354,7 @@ function testUnionOrder() {
   /**
    * Tests that we can UNION multiple Select queries together with and a LIMIT.
    */
-  function testUnionOrderLimit() {
+  public function testUnionOrderLimit() {
     // This gives George and Ringo.
     $query_1 = db_select('test', 't')
       ->fields('t', ['name'])
@@ -395,7 +395,7 @@ function testUnionOrderLimit() {
    * order each time, the only way this could happen is if we have successfully
    * triggered the database's random ordering functionality.
    */
-  function testRandomOrder() {
+  public function testRandomOrder() {
     // Use 52 items, so the chance that this test fails by accident will be the
     // same as the chance that a deck of cards will come out in the same order
     // after shuffling it (in other words, nearly impossible).
@@ -521,7 +521,7 @@ public function testRegexCondition() {
   /**
    * Tests that aliases are renamed when they are duplicates.
    */
-  function testSelectDuplicateAlias() {
+  public function testSelectDuplicateAlias() {
     $query = db_select('test', 't');
     $alias1 = $query->addField('t', 'name', 'the_alias');
     $alias2 = $query->addField('t', 'age', 'the_alias');
@@ -531,7 +531,7 @@ function testSelectDuplicateAlias() {
   /**
    * Tests that an invalid merge query throws an exception.
    */
-  function testInvalidSelectCount() {
+  public function testInvalidSelectCount() {
     try {
       // This query will fail because the table does not exist.
       // Normally it would throw an exception but we are suppressing
@@ -566,7 +566,7 @@ function testInvalidSelectCount() {
   /**
    * Tests thrown exception for IN query conditions with an empty array.
    */
-  function testEmptyInCondition() {
+  public function testEmptyInCondition() {
     try {
       db_select('test', 't')
         ->fields('t')
diff --git a/core/tests/Drupal/KernelTests/Core/Database/SerializeQueryTest.php b/core/tests/Drupal/KernelTests/Core/Database/SerializeQueryTest.php
index 6505484f8d257b4b05302ee7e43dc818f9679110..357b39feb2bdb95ef2372324cbcb6d2d5a4f248b 100644
--- a/core/tests/Drupal/KernelTests/Core/Database/SerializeQueryTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Database/SerializeQueryTest.php
@@ -11,7 +11,7 @@ class SerializeQueryTest extends DatabaseTestBase {
   /**
    * Confirms that a query can be serialized and unserialized.
    */
-  function testSerializeQuery() {
+  public function testSerializeQuery() {
     $query = db_select('test');
     $query->addField('test', 'age');
     $query->condition('name', 'Ringo');
diff --git a/core/tests/Drupal/KernelTests/Core/Database/TaggingTest.php b/core/tests/Drupal/KernelTests/Core/Database/TaggingTest.php
index 0f9f6d463b69e6f6342262a61c31db1d43e5516b..cab91381fdf7bc496c32b11e5297d475646c8e8a 100644
--- a/core/tests/Drupal/KernelTests/Core/Database/TaggingTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Database/TaggingTest.php
@@ -15,7 +15,7 @@ class TaggingTest extends DatabaseTestBase {
   /**
    * Confirms that a query has a tag added to it.
    */
-  function testHasTag() {
+  public function testHasTag() {
     $query = db_select('test');
     $query->addField('test', 'name');
     $query->addField('test', 'age', 'age');
@@ -29,7 +29,7 @@ function testHasTag() {
   /**
    * Tests query tagging "has all of these tags" functionality.
    */
-  function testHasAllTags() {
+  public function testHasAllTags() {
     $query = db_select('test');
     $query->addField('test', 'name');
     $query->addField('test', 'age', 'age');
@@ -44,7 +44,7 @@ function testHasAllTags() {
   /**
    * Tests query tagging "has at least one of these tags" functionality.
    */
-  function testHasAnyTag() {
+  public function testHasAnyTag() {
     $query = db_select('test');
     $query->addField('test', 'name');
     $query->addField('test', 'age', 'age');
@@ -58,7 +58,7 @@ function testHasAnyTag() {
   /**
    * Confirms that an extended query has a tag added to it.
    */
-  function testExtenderHasTag() {
+  public function testExtenderHasTag() {
     $query = db_select('test')
       ->extend('Drupal\Core\Database\Query\SelectExtender');
     $query->addField('test', 'name');
@@ -73,7 +73,7 @@ function testExtenderHasTag() {
   /**
    * Tests extended query tagging "has all of these tags" functionality.
    */
-  function testExtenderHasAllTags() {
+  public function testExtenderHasAllTags() {
     $query = db_select('test')
       ->extend('Drupal\Core\Database\Query\SelectExtender');
     $query->addField('test', 'name');
@@ -89,7 +89,7 @@ function testExtenderHasAllTags() {
   /**
    * Tests extended query tagging "has at least one of these tags" functionality.
    */
-  function testExtenderHasAnyTag() {
+  public function testExtenderHasAnyTag() {
     $query = db_select('test')
       ->extend('Drupal\Core\Database\Query\SelectExtender');
     $query->addField('test', 'name');
@@ -106,7 +106,7 @@ function testExtenderHasAnyTag() {
    *
    * This is how we pass additional context to alter hooks.
    */
-  function testMetaData() {
+  public function testMetaData() {
     $query = db_select('test');
     $query->addField('test', 'name');
     $query->addField('test', 'age', 'age');
diff --git a/core/tests/Drupal/KernelTests/Core/Database/TransactionTest.php b/core/tests/Drupal/KernelTests/Core/Database/TransactionTest.php
index 862b3e646b5613c35c822e2e848ec4350d7166f5..a07045dd5303a2bf08e32cb24fe683bda05c9987 100644
--- a/core/tests/Drupal/KernelTests/Core/Database/TransactionTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Database/TransactionTest.php
@@ -146,7 +146,7 @@ protected function transactionInnerLayer($suffix, $rollback = FALSE, $ddl_statem
    * If the active connection does not support transactions, this test does
    * nothing.
    */
-  function testTransactionRollBackSupported() {
+  public function testTransactionRollBackSupported() {
     // This test won't work right if transactions are not supported.
     if (!Database::getConnection()->supportsTransactions()) {
       return;
@@ -172,7 +172,7 @@ function testTransactionRollBackSupported() {
    *
    * If the active driver supports transactions, this test does nothing.
    */
-  function testTransactionRollBackNotSupported() {
+  public function testTransactionRollBackNotSupported() {
     // This test won't work right if transactions are supported.
     if (Database::getConnection()->supportsTransactions()) {
       return;
@@ -199,7 +199,7 @@ function testTransactionRollBackNotSupported() {
    * The behavior of this test should be identical for connections that support
    * transactions and those that do not.
    */
-  function testCommittedTransaction() {
+  public function testCommittedTransaction() {
     try {
       // Create two nested transactions. The changes should be committed.
       $this->transactionOuterLayer('A');
@@ -218,7 +218,7 @@ function testCommittedTransaction() {
   /**
    * Tests the compatibility of transactions with DDL statements.
    */
-  function testTransactionWithDdlStatement() {
+  public function testTransactionWithDdlStatement() {
     // First, test that a commit works normally, even with DDL statements.
     $transaction = db_transaction();
     $this->insertRow('row');
@@ -351,7 +351,7 @@ protected function cleanUp() {
    * @param $message
    *   The message to log for the assertion.
    */
-  function assertRowPresent($name, $message = NULL) {
+  public function assertRowPresent($name, $message = NULL) {
     if (!isset($message)) {
       $message = format_string('Row %name is present.', ['%name' => $name]);
     }
@@ -367,7 +367,7 @@ function assertRowPresent($name, $message = NULL) {
    * @param $message
    *   The message to log for the assertion.
    */
-  function assertRowAbsent($name, $message = NULL) {
+  public function assertRowAbsent($name, $message = NULL) {
     if (!isset($message)) {
       $message = format_string('Row %name is absent.', ['%name' => $name]);
     }
@@ -378,7 +378,7 @@ function assertRowAbsent($name, $message = NULL) {
   /**
    * Tests transaction stacking, commit, and rollback.
    */
-  function testTransactionStacking() {
+  public function testTransactionStacking() {
     // This test won't work right if transactions are not supported.
     if (!Database::getConnection()->supportsTransactions()) {
       return;
diff --git a/core/tests/Drupal/KernelTests/Core/Database/UpdateComplexTest.php b/core/tests/Drupal/KernelTests/Core/Database/UpdateComplexTest.php
index 85521b1cc0bc79e5bdc3775ee8d04de93a2608a4..69d5d5d3884eb2ed2216efdb08ff97ff2a66a94c 100644
--- a/core/tests/Drupal/KernelTests/Core/Database/UpdateComplexTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Database/UpdateComplexTest.php
@@ -14,7 +14,7 @@ class UpdateComplexTest extends DatabaseTestBase {
   /**
    * Tests updates with OR conditionals.
    */
-  function testOrConditionUpdate() {
+  public function testOrConditionUpdate() {
     $update = db_update('test')
       ->fields(['job' => 'Musician'])
       ->condition((new Condition('OR'))
@@ -31,7 +31,7 @@ function testOrConditionUpdate() {
   /**
    * Tests WHERE IN clauses.
    */
-  function testInConditionUpdate() {
+  public function testInConditionUpdate() {
     $num_updated = db_update('test')
       ->fields(['job' => 'Musician'])
       ->condition('name', ['John', 'Paul'], 'IN')
@@ -45,7 +45,7 @@ function testInConditionUpdate() {
   /**
    * Tests WHERE NOT IN clauses.
    */
-  function testNotInConditionUpdate() {
+  public function testNotInConditionUpdate() {
     // The o is lowercase in the 'NoT IN' operator, to make sure the operators
     // work in mixed case.
     $num_updated = db_update('test')
@@ -61,7 +61,7 @@ function testNotInConditionUpdate() {
   /**
    * Tests BETWEEN conditional clauses.
    */
-  function testBetweenConditionUpdate() {
+  public function testBetweenConditionUpdate() {
     $num_updated = db_update('test')
       ->fields(['job' => 'Musician'])
       ->condition('age', [25, 26], 'BETWEEN')
@@ -75,7 +75,7 @@ function testBetweenConditionUpdate() {
   /**
    * Tests LIKE conditionals.
    */
-  function testLikeConditionUpdate() {
+  public function testLikeConditionUpdate() {
     $num_updated = db_update('test')
       ->fields(['job' => 'Musician'])
       ->condition('name', '%ge%', 'LIKE')
@@ -89,7 +89,7 @@ function testLikeConditionUpdate() {
   /**
    * Tests UPDATE with expression values.
    */
-  function testUpdateExpression() {
+  public function testUpdateExpression() {
     $before_age = db_query('SELECT age FROM {test} WHERE name = :name', [':name' => 'Ringo'])->fetchField();
     $num_updated = db_update('test')
       ->condition('name', 'Ringo')
@@ -110,7 +110,7 @@ function testUpdateExpression() {
   /**
    * Tests UPDATE with only expression values.
    */
-  function testUpdateOnlyExpression() {
+  public function testUpdateOnlyExpression() {
     $before_age = db_query('SELECT age FROM {test} WHERE name = :name', [':name' => 'Ringo'])->fetchField();
     $num_updated = db_update('test')
       ->condition('name', 'Ringo')
@@ -125,7 +125,7 @@ function testUpdateOnlyExpression() {
   /**
    * Test UPDATE with a subselect value.
    */
-  function testSubSelectUpdate() {
+  public function testSubSelectUpdate() {
     $subselect = db_select('test_task', 't');
     $subselect->addExpression('MAX(priority) + :increment', 'max_priority', [':increment' => 30]);
     // Clone this to make sure we are running a different query when
diff --git a/core/tests/Drupal/KernelTests/Core/Database/UpdateLobTest.php b/core/tests/Drupal/KernelTests/Core/Database/UpdateLobTest.php
index cee2c958adc599cacf160296d652d00e5939d5d5..501f9183147ece9595d1f4f90eccd48407fc718b 100644
--- a/core/tests/Drupal/KernelTests/Core/Database/UpdateLobTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Database/UpdateLobTest.php
@@ -12,7 +12,7 @@ class UpdateLobTest extends DatabaseTestBase {
   /**
    * Confirms that we can update a blob column.
    */
-  function testUpdateOneBlob() {
+  public function testUpdateOneBlob() {
     $data = "This is\000a test.";
     $this->assertTrue(strlen($data) === 15, 'Test data contains a NULL.');
     $id = db_insert('test_one_blob')
@@ -32,7 +32,7 @@ function testUpdateOneBlob() {
   /**
    * Confirms that we can update two blob columns in the same table.
    */
-  function testUpdateMultipleBlob() {
+  public function testUpdateMultipleBlob() {
     $id = db_insert('test_two_blobs')
       ->fields([
         'blob1' => 'This is',
diff --git a/core/tests/Drupal/KernelTests/Core/Database/UpdateTest.php b/core/tests/Drupal/KernelTests/Core/Database/UpdateTest.php
index aef6e866ebb675a526853ed56364cde3ce735b94..6bc91316fd6c33ba2e4e19017d8a2cf7b588c4f2 100644
--- a/core/tests/Drupal/KernelTests/Core/Database/UpdateTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Database/UpdateTest.php
@@ -12,7 +12,7 @@ class UpdateTest extends DatabaseTestBase {
   /**
    * Confirms that we can update a single record successfully.
    */
-  function testSimpleUpdate() {
+  public function testSimpleUpdate() {
     $num_updated = db_update('test')
       ->fields(['name' => 'Tiffany'])
       ->condition('id', 1)
@@ -26,7 +26,7 @@ function testSimpleUpdate() {
   /**
    * Confirms updating to NULL.
    */
-  function testSimpleNullUpdate() {
+  public function testSimpleNullUpdate() {
     $this->ensureSampleDataNull();
     $num_updated = db_update('test_null')
       ->fields(['age' => NULL])
@@ -41,7 +41,7 @@ function testSimpleNullUpdate() {
   /**
    * Confirms that we can update multiple records successfully.
    */
-  function testMultiUpdate() {
+  public function testMultiUpdate() {
     $num_updated = db_update('test')
       ->fields(['job' => 'Musician'])
       ->condition('job', 'Singer')
@@ -55,7 +55,7 @@ function testMultiUpdate() {
   /**
    * Confirms that we can update multiple records with a non-equality condition.
    */
-  function testMultiGTUpdate() {
+  public function testMultiGTUpdate() {
     $num_updated = db_update('test')
       ->fields(['job' => 'Musician'])
       ->condition('age', 26, '>')
@@ -69,7 +69,7 @@ function testMultiGTUpdate() {
   /**
    * Confirms that we can update multiple records with a where call.
    */
-  function testWhereUpdate() {
+  public function testWhereUpdate() {
     $num_updated = db_update('test')
       ->fields(['job' => 'Musician'])
       ->where('age > :age', [':age' => 26])
@@ -83,7 +83,7 @@ function testWhereUpdate() {
   /**
    * Confirms that we can stack condition and where calls.
    */
-  function testWhereAndConditionUpdate() {
+  public function testWhereAndConditionUpdate() {
     $update = db_update('test')
       ->fields(['job' => 'Musician'])
       ->where('age > :age', [':age' => 26])
@@ -98,7 +98,7 @@ function testWhereAndConditionUpdate() {
   /**
    * Tests updating with expressions.
    */
-  function testExpressionUpdate() {
+  public function testExpressionUpdate() {
     // Ensure that expressions are handled properly. This should set every
     // record's age to a square of itself.
     $num_rows = db_update('test')
@@ -113,7 +113,7 @@ function testExpressionUpdate() {
   /**
    * Tests return value on update.
    */
-  function testUpdateAffectedRows() {
+  public function testUpdateAffectedRows() {
     // At 5am in the morning, all band members but those with a priority 1 task
     // are sleeping. So we set their tasks to 'sleep'. 5 records match the
     // condition and therefore are affected by the query, even though two of
@@ -130,7 +130,7 @@ function testUpdateAffectedRows() {
   /**
    * Confirm that we can update the primary key of a record successfully.
    */
-  function testPrimaryKeyUpdate() {
+  public function testPrimaryKeyUpdate() {
     $num_updated = db_update('test')
       ->fields(['id' => 42, 'name' => 'John'])
       ->condition('id', 1)
@@ -144,7 +144,7 @@ function testPrimaryKeyUpdate() {
   /**
    * Confirm that we can update values in a column with special name.
    */
-  function testSpecialColumnUpdate() {
+  public function testSpecialColumnUpdate() {
     $num_updated = db_update('test_special_columns')
       ->fields(['offset' => 'New offset value'])
       ->condition('id', 1)
diff --git a/core/tests/Drupal/KernelTests/Core/Entity/EntityAccessControlHandlerTest.php b/core/tests/Drupal/KernelTests/Core/Entity/EntityAccessControlHandlerTest.php
index a0ab99978c0ee72de8ca9c0c41b44ec702336075..d7644b205954c183012bb6d6905b5562f0440a7e 100644
--- a/core/tests/Drupal/KernelTests/Core/Entity/EntityAccessControlHandlerTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Entity/EntityAccessControlHandlerTest.php
@@ -23,7 +23,7 @@ class EntityAccessControlHandlerTest extends EntityLanguageTestBase {
   /**
    * Asserts entity access correctly grants or denies access.
    */
-  function assertEntityAccess($ops, AccessibleInterface $object, AccountInterface $account = NULL) {
+  public function assertEntityAccess($ops, AccessibleInterface $object, AccountInterface $account = NULL) {
     foreach ($ops as $op => $result) {
       $message = format_string("Entity access returns @result with operation '@op'.", [
         '@result' => !isset($result) ? 'null' : ($result ? 'true' : 'false'),
@@ -91,7 +91,7 @@ public function testUserLabelAccess() {
   /**
    * Ensures entity access is properly working.
    */
-  function testEntityAccess() {
+  public function testEntityAccess() {
     // Set up a non-admin user that is allowed to view test entities.
     \Drupal::currentUser()->setAccount($this->createUser(['uid' => 2], ['view test entity']));
 
@@ -134,7 +134,7 @@ function testEntityAccess() {
    * @see \Drupal\entity_test\EntityTestAccessControlHandler::checkAccess()
    * @see entity_test_entity_access()
    */
-  function testDefaultEntityAccess() {
+  public function testDefaultEntityAccess() {
     // Set up a non-admin user that is allowed to view test entities.
     \Drupal::currentUser()->setAccount($this->createUser(['uid' => 2], ['view test entity']));
     $entity = EntityTest::create([
@@ -153,7 +153,7 @@ function testDefaultEntityAccess() {
   /**
    * Ensures that the default handler is used as a fallback.
    */
-  function testEntityAccessDefaultController() {
+  public function testEntityAccessDefaultController() {
     // The implementation requires that the global user id can be loaded.
     \Drupal::currentUser()->setAccount($this->createUser(['uid' => 2]));
 
@@ -174,7 +174,7 @@ function testEntityAccessDefaultController() {
   /**
    * Ensures entity access for entity translations is properly working.
    */
-  function testEntityTranslationAccess() {
+  public function testEntityTranslationAccess() {
 
     // Set up a non-admin user that is allowed to view test entity translations.
     \Drupal::currentUser()->setAccount($this->createUser(['uid' => 2], ['view test entity translations']));
diff --git a/core/tests/Drupal/KernelTests/Core/Entity/EntityAutocompleteTest.php b/core/tests/Drupal/KernelTests/Core/Entity/EntityAutocompleteTest.php
index 3fed33c05193b19ae0fd951e27ea04c2f0960d1a..ca65eb832441e07f75561b1a6a8c967036d6acab 100644
--- a/core/tests/Drupal/KernelTests/Core/Entity/EntityAutocompleteTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Entity/EntityAutocompleteTest.php
@@ -43,7 +43,7 @@ protected function setUp() {
   /**
    * Tests autocompletion edge cases with slashes in the names.
    */
-  function testEntityReferenceAutocompletion() {
+  public function testEntityReferenceAutocompletion() {
     // Add an entity with a slash in its name.
     $entity_1 = $this->container->get('entity_type.manager')
       ->getStorage($this->entityType)
diff --git a/core/tests/Drupal/KernelTests/Core/Entity/EntityCrudHookTest.php b/core/tests/Drupal/KernelTests/Core/Entity/EntityCrudHookTest.php
index 8178cecf8b18db9f7ed3e01fd0e323b8bdd134bc..9b279a5e1df8c981d20d30f5b8ea55949b70f266 100644
--- a/core/tests/Drupal/KernelTests/Core/Entity/EntityCrudHookTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Entity/EntityCrudHookTest.php
@@ -535,7 +535,7 @@ public function testUserHooks() {
   /**
    * Tests rollback from failed entity save.
    */
-  function testEntityRollback() {
+  public function testEntityRollback() {
     // Create a block.
     try {
       EntityTest::create(['name' => 'fail_insert'])->save();
diff --git a/core/tests/Drupal/KernelTests/Core/Entity/EntityNonRevisionableTranslatableFieldTest.php b/core/tests/Drupal/KernelTests/Core/Entity/EntityNonRevisionableTranslatableFieldTest.php
index bab52b0fe326eacf0c2ebaa1c854d3a3b8288161..7e6d0093b88cf73e8eb216e5ffe4985e4abee688 100644
--- a/core/tests/Drupal/KernelTests/Core/Entity/EntityNonRevisionableTranslatableFieldTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Entity/EntityNonRevisionableTranslatableFieldTest.php
@@ -28,7 +28,7 @@ protected function setUp() {
   /**
    * Tests translating a non-revisionable field.
    */
-  function testTranslatingNonRevisionableField() {
+  public function testTranslatingNonRevisionableField() {
     /** @var \Drupal\Core\Entity\ContentEntityBase $entity */
     $entity = EntityTestMulRev::create();
     $entity->set('non_rev_field', 'Hello');
diff --git a/core/tests/Drupal/KernelTests/Core/Entity/EntityQueryTest.php b/core/tests/Drupal/KernelTests/Core/Entity/EntityQueryTest.php
index 1ad2f31bb8efa8f37cb08fae49a52473eaa9b3d3..5c7e51cbc5984bd10a64d6ffcc1f6227037c062d 100644
--- a/core/tests/Drupal/KernelTests/Core/Entity/EntityQueryTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Entity/EntityQueryTest.php
@@ -145,7 +145,7 @@ protected function setUp() {
   /**
    * Test basic functionality.
    */
-  function testEntityQuery() {
+  public function testEntityQuery() {
     $greetings = $this->greetings;
     $figures = $this->figures;
     $this->queryResults = $this->factory->get('entity_test_mulrev')
@@ -318,7 +318,7 @@ function testEntityQuery() {
    *
    * Warning: this is complicated.
    */
-  function testSort() {
+  public function testSort() {
     $greetings = $this->greetings;
     $figures = $this->figures;
     // Order up and down on a number.
diff --git a/core/tests/Drupal/KernelTests/Core/Entity/EntityReferenceFieldTest.php b/core/tests/Drupal/KernelTests/Core/Entity/EntityReferenceFieldTest.php
index e9b1857dc6135242ec95802d1203494907b86871..41c59194e1967e9c8098aa19fba21ebc5b91b310 100644
--- a/core/tests/Drupal/KernelTests/Core/Entity/EntityReferenceFieldTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Entity/EntityReferenceFieldTest.php
@@ -241,7 +241,7 @@ public function testReferencedEntitiesStringId() {
   /**
    * Tests all the possible ways to autocreate an entity via the API.
    */
-  function testAutocreateApi() {
+  public function testAutocreateApi() {
     $entity = $this->entityManager
       ->getStorage($this->entityType)
       ->create(['name' => $this->randomString()]);
diff --git a/core/tests/Drupal/KernelTests/Core/Entity/EntityTranslationTest.php b/core/tests/Drupal/KernelTests/Core/Entity/EntityTranslationTest.php
index fad389914314290f80985bfb1edd36e4a843bb95..fe8bcc015d3c40ec3569675047838577cd209c1e 100644
--- a/core/tests/Drupal/KernelTests/Core/Entity/EntityTranslationTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Entity/EntityTranslationTest.php
@@ -309,7 +309,7 @@ protected function doTestMultilingualProperties($entity_type) {
   /**
    * Tests the Entity Translation API behavior.
    */
-  function testEntityTranslationAPI() {
+  public function testEntityTranslationAPI() {
     // Test all entity variations with data table support.
     foreach (entity_test_entity_types(ENTITY_TEST_TYPES_MULTILINGUAL) as $entity_type) {
       $this->doTestEntityTranslationAPI($entity_type);
@@ -586,7 +586,7 @@ protected function doTestEntityTranslationAPI($entity_type) {
   /**
    * Tests language fallback applied to field and entity translations.
    */
-  function testLanguageFallback() {
+  public function testLanguageFallback() {
     // Test all entity variations with data table support.
     foreach (entity_test_entity_types(ENTITY_TEST_TYPES_MULTILINGUAL) as $entity_type) {
       $this->doTestLanguageFallback($entity_type);
@@ -682,7 +682,7 @@ protected function doTestLanguageFallback($entity_type) {
   /**
    * Check that field translatability is handled properly.
    */
-  function testFieldDefinitions() {
+  public function testFieldDefinitions() {
     // Check that field translatability can be altered to be enabled or disabled
     // in field definitions.
     $entity_type = 'entity_test_mulrev';
@@ -789,7 +789,7 @@ protected function doTestLanguageChange($entity_type) {
   /**
    * Tests how entity adapters work with translations.
    */
-  function testEntityAdapter() {
+  public function testEntityAdapter() {
     $entity_type = 'entity_test';
     $default_langcode = 'en';
     $values[$default_langcode] = ['name' => $this->randomString()];
diff --git a/core/tests/Drupal/KernelTests/Core/Entity/EntityUUIDTest.php b/core/tests/Drupal/KernelTests/Core/Entity/EntityUUIDTest.php
index c76ea6a86130e66efc72bb37db09e2cc26f51edc..a3466a4967e8640fcdcbf7fcd26a71214101bf38 100644
--- a/core/tests/Drupal/KernelTests/Core/Entity/EntityUUIDTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Entity/EntityUUIDTest.php
@@ -23,7 +23,7 @@ protected function setUp() {
   /**
    * Tests UUID generation in entity CRUD operations.
    */
-  function testCRUD() {
+  public function testCRUD() {
     // All entity variations have to have the same results.
     foreach (entity_test_entity_types() as $entity_type) {
       $this->assertCRUD($entity_type);
diff --git a/core/tests/Drupal/KernelTests/Core/Entity/FieldSqlStorageTest.php b/core/tests/Drupal/KernelTests/Core/Entity/FieldSqlStorageTest.php
index 30e817d1db78f579136001fcfdf49a5e0b7ce14b..884ee89956b75a4b842adcccefd82cdc38bf25c0 100644
--- a/core/tests/Drupal/KernelTests/Core/Entity/FieldSqlStorageTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Entity/FieldSqlStorageTest.php
@@ -103,7 +103,7 @@ protected function setUp() {
   /**
    * Tests field loading works correctly by inserting directly in the tables.
    */
-  function testFieldLoad() {
+  public function testFieldLoad() {
     $entity_type = $bundle = 'entity_test_rev';
     $storage = $this->container->get('entity.manager')->getStorage($entity_type);
 
@@ -177,7 +177,7 @@ function testFieldLoad() {
   /**
    * Tests field saving works correctly by reading directly from the tables.
    */
-  function testFieldWrite() {
+  public function testFieldWrite() {
     $entity_type = $bundle = 'entity_test_rev';
     $entity = $this->container->get('entity_type.manager')
       ->getStorage($entity_type)
@@ -271,7 +271,7 @@ function testFieldWrite() {
   /**
    * Tests that long entity type and field names do not break.
    */
-  function testLongNames() {
+  public function testLongNames() {
     // Use one of the longest entity_type names in core.
     $entity_type = $bundle = 'entity_test_label_callback';
     $this->installEntitySchema('entity_test_label_callback');
@@ -312,7 +312,7 @@ function testLongNames() {
   /**
    * Test trying to update a field with data.
    */
-  function testUpdateFieldSchemaWithData() {
+  public function testUpdateFieldSchemaWithData() {
     $entity_type = 'entity_test_rev';
     // Create a decimal 5.2 field and add some data.
     $field_storage = FieldStorageConfig::create([
@@ -350,7 +350,7 @@ function testUpdateFieldSchemaWithData() {
   /**
    * Test that failure to create fields is handled gracefully.
    */
-  function testFieldUpdateFailure() {
+  public function testFieldUpdateFailure() {
     // Create a text field.
     $field_storage = FieldStorageConfig::create([
       'field_name' => 'test_text',
@@ -388,7 +388,7 @@ function testFieldUpdateFailure() {
   /**
    * Test adding and removing indexes while data is present.
    */
-  function testFieldUpdateIndexesWithData() {
+  public function testFieldUpdateIndexesWithData() {
     // Create a decimal field.
     $field_name = 'testfield';
     $entity_type = 'entity_test_rev';
@@ -445,7 +445,7 @@ function testFieldUpdateIndexesWithData() {
   /**
    * Test foreign key support.
    */
-  function testFieldSqlStorageForeignKeys() {
+  public function testFieldSqlStorageForeignKeys() {
     // Create a 'shape' field, with a configurable foreign key (see
     // field_test_field_schema()).
     $field_name = 'testfield';
diff --git a/core/tests/Drupal/KernelTests/Core/EventSubscriber/IgnoreReplicaSubscriberTest.php b/core/tests/Drupal/KernelTests/Core/EventSubscriber/IgnoreReplicaSubscriberTest.php
index 51315372f1b21d46964d5cbea0f7e18b38d1ea07..4206ceab8e753d48f6935729e15b80867e62cf4d 100644
--- a/core/tests/Drupal/KernelTests/Core/EventSubscriber/IgnoreReplicaSubscriberTest.php
+++ b/core/tests/Drupal/KernelTests/Core/EventSubscriber/IgnoreReplicaSubscriberTest.php
@@ -20,7 +20,7 @@ class IgnoreReplicaSubscriberTest extends KernelTestBase {
   /**
    * Tests \Drupal\Core\EventSubscriber\ReplicaDatabaseIgnoreSubscriber::checkReplicaServer().
    */
-  function testSystemInitIgnoresSecondaries() {
+  public function testSystemInitIgnoresSecondaries() {
     // Clone the master credentials to a replica connection.
     // Note this will result in two independent connection objects that happen
     // to point to the same place.
diff --git a/core/tests/Drupal/KernelTests/Core/Extension/ModuleConfigureRouteTest.php b/core/tests/Drupal/KernelTests/Core/Extension/ModuleConfigureRouteTest.php
index 446c240c6a3a81a92f975809f0b987bccaa91ebe..96e469a84bbdfecd4fd57c956f4c72706e652f59 100644
--- a/core/tests/Drupal/KernelTests/Core/Extension/ModuleConfigureRouteTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Extension/ModuleConfigureRouteTest.php
@@ -45,7 +45,7 @@ protected function setUp() {
    *
    * @dataProvider coreModuleListDataProvider
    */
-  function testModuleConfigureRoutes($module) {
+  public function testModuleConfigureRoutes($module) {
     $module_info = $this->moduleInfo[$module]->info;
     if (isset($module_info['configure'])) {
       $this->container->get('module_installer')->install([$module]);
diff --git a/core/tests/Drupal/KernelTests/Core/Extension/ModuleImplementsAlterTest.php b/core/tests/Drupal/KernelTests/Core/Extension/ModuleImplementsAlterTest.php
index c0ec629721c6879d77350612416cb2a465c22023..7d29a26124d50ed221bcfd13aea1a3047d479c84 100644
--- a/core/tests/Drupal/KernelTests/Core/Extension/ModuleImplementsAlterTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Extension/ModuleImplementsAlterTest.php
@@ -22,7 +22,7 @@ class ModuleImplementsAlterTest extends KernelTestBase {
    * @see \Drupal\Core\Extension\ModuleHandler::buildImplementationInfo()
    * @see module_test_module_implements_alter()
    */
-  function testModuleImplementsAlter() {
+  public function testModuleImplementsAlter() {
 
     // Get an instance of the module handler, to observe how it is going to be
     // replaced.
@@ -73,7 +73,7 @@ function testModuleImplementsAlter() {
    * @see \Drupal\Core\Extension\ModuleHandler::buildImplementationInfo()
    * @see module_test_module_implements_alter()
    */
-  function testModuleImplementsAlterNonExistingImplementation() {
+  public function testModuleImplementsAlterNonExistingImplementation() {
 
     // Install the module_test module.
     \Drupal::service('module_installer')->install(['module_test']);
diff --git a/core/tests/Drupal/KernelTests/Core/Field/FieldAccessTest.php b/core/tests/Drupal/KernelTests/Core/Field/FieldAccessTest.php
index f019ff2917aaa7dfbfdfdccb921838ab2ba83796..f273029bf2d2de89bf2a09f1aa05fdb33476d613 100644
--- a/core/tests/Drupal/KernelTests/Core/Field/FieldAccessTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Field/FieldAccessTest.php
@@ -48,7 +48,7 @@ protected function setUp() {
    * @see entity_test_entity_field_access()
    * @see entity_test_entity_field_access_alter()
    */
-  function testFieldAccess() {
+  public function testFieldAccess() {
     $values = [
       'name' => $this->randomMachineName(),
       'user_id' => 1,
diff --git a/core/tests/Drupal/KernelTests/Core/File/DirectoryTest.php b/core/tests/Drupal/KernelTests/Core/File/DirectoryTest.php
index c8aa14ec92d2b2746af4909f76b436b01d88b054..4e35821690a2e33260f5b82d8e7085497b46f7e0 100644
--- a/core/tests/Drupal/KernelTests/Core/File/DirectoryTest.php
+++ b/core/tests/Drupal/KernelTests/Core/File/DirectoryTest.php
@@ -14,7 +14,7 @@ class DirectoryTest extends FileTestBase {
   /**
    * Test local directory handling functions.
    */
-  function testFileCheckLocalDirectoryHandling() {
+  public function testFileCheckLocalDirectoryHandling() {
     $site_path = $this->container->get('site.path');
     $directory = $site_path . '/files';
 
@@ -53,7 +53,7 @@ function testFileCheckLocalDirectoryHandling() {
   /**
    * Test directory handling functions.
    */
-  function testFileCheckDirectoryHandling() {
+  public function testFileCheckDirectoryHandling() {
     // A directory to operate on.
     $directory = file_default_scheme() . '://' . $this->randomMachineName() . '/' . $this->randomMachineName();
     $this->assertFalse(is_dir($directory), 'Directory does not exist prior to testing.');
@@ -99,7 +99,7 @@ function testFileCheckDirectoryHandling() {
    * This will take a directory and path, and find a valid filepath that is not
    * taken by another file.
    */
-  function testFileCreateNewFilepath() {
+  public function testFileCreateNewFilepath() {
     // First we test against an imaginary file that does not exist in a
     // directory.
     $basename = 'xyz.txt';
@@ -130,7 +130,7 @@ function testFileCreateNewFilepath() {
    * If the file doesn't currently exist, then it will simply return the
    * filepath.
    */
-  function testFileDestination() {
+  public function testFileDestination() {
     // First test for non-existent file.
     $destination = 'core/misc/xyz.txt';
     $path = file_destination($destination, FILE_EXISTS_REPLACE);
@@ -152,7 +152,7 @@ function testFileDestination() {
   /**
    * Ensure that the file_directory_temp() function always returns a value.
    */
-  function testFileDirectoryTemp() {
+  public function testFileDirectoryTemp() {
     // Start with an empty variable to ensure we have a clean slate.
     $config = $this->config('system.file');
     $config->set('path.temporary', '')->save();
diff --git a/core/tests/Drupal/KernelTests/Core/File/FileTestBase.php b/core/tests/Drupal/KernelTests/Core/File/FileTestBase.php
index 0b10d9288f27170b4f0e68a0e2f00797bfe7b6ff..1a5b44f96091f8a7c6b76c455f401261106bd575 100644
--- a/core/tests/Drupal/KernelTests/Core/File/FileTestBase.php
+++ b/core/tests/Drupal/KernelTests/Core/File/FileTestBase.php
@@ -85,7 +85,7 @@ protected function setUpFilesystem() {
    * @param $message
    *   Optional message.
    */
-  function assertFilePermissions($filepath, $expected_mode, $message = NULL) {
+  public function assertFilePermissions($filepath, $expected_mode, $message = NULL) {
     // Clear out PHP's file stat cache to be sure we see the current value.
     clearstatcache(TRUE, $filepath);
 
@@ -120,7 +120,7 @@ function assertFilePermissions($filepath, $expected_mode, $message = NULL) {
    * @param $message
    *   Optional message.
    */
-  function assertDirectoryPermissions($directory, $expected_mode, $message = NULL) {
+  public function assertDirectoryPermissions($directory, $expected_mode, $message = NULL) {
     // Clear out PHP's file stat cache to be sure we see the current value.
     clearstatcache(TRUE, $directory);
 
@@ -155,7 +155,7 @@ function assertDirectoryPermissions($directory, $expected_mode, $message = NULL)
    * @return
    *   The path to the directory.
    */
-  function createDirectory($path = NULL) {
+  public function createDirectory($path = NULL) {
     // A directory to operate on.
     if (!isset($path)) {
       $path = file_default_scheme() . '://' . $this->randomMachineName();
@@ -179,7 +179,7 @@ function createDirectory($path = NULL) {
    * @return
    *   File URI.
    */
-  function createUri($filepath = NULL, $contents = NULL, $scheme = NULL) {
+  public function createUri($filepath = NULL, $contents = NULL, $scheme = NULL) {
     if (!isset($filepath)) {
       // Prefix with non-latin characters to ensure that all file-related
       // tests work with international filenames.
diff --git a/core/tests/Drupal/KernelTests/Core/File/HtaccessTest.php b/core/tests/Drupal/KernelTests/Core/File/HtaccessTest.php
index 896627671d06b1f8b0d530d088466766a44c0c65..0c4c1eb7d0a2ac375f39c8c76db1f5b40452e93f 100644
--- a/core/tests/Drupal/KernelTests/Core/File/HtaccessTest.php
+++ b/core/tests/Drupal/KernelTests/Core/File/HtaccessTest.php
@@ -16,7 +16,7 @@ class HtaccessTest extends KernelTestBase {
   /**
    * Tests file_save_htaccess().
    */
-  function testHtaccessSave() {
+  public function testHtaccessSave() {
     // Prepare test directories.
     $public = Settings::get('file_public_path') . '/test/public';
     $private = Settings::get('file_public_path') . '/test/private';
diff --git a/core/tests/Drupal/KernelTests/Core/File/NameMungingTest.php b/core/tests/Drupal/KernelTests/Core/File/NameMungingTest.php
index 8e1506d535d79f08e5766e8899e820b3c782b2a7..422f294a35885a50f7aaaf75dc28f885d35ab7ff 100644
--- a/core/tests/Drupal/KernelTests/Core/File/NameMungingTest.php
+++ b/core/tests/Drupal/KernelTests/Core/File/NameMungingTest.php
@@ -34,7 +34,7 @@ protected function setUp() {
   /**
    * Create a file and munge/unmunge the name.
    */
-  function testMunging() {
+  public function testMunging() {
     // Disable insecure uploads.
     $this->config('system.file')->set('allow_insecure_uploads', 0)->save();
     $munged_name = file_munge_filename($this->name, '', TRUE);
@@ -46,7 +46,7 @@ function testMunging() {
   /**
    * Tests munging with a null byte in the filename.
    */
-  function testMungeNullByte() {
+  public function testMungeNullByte() {
     $prefix = $this->randomMachineName();
     $filename = $prefix . '.' . $this->badExtension . "\0.txt";
     $this->assertEqual(file_munge_filename($filename, ''), $prefix . '.' . $this->badExtension . '_.txt', 'A filename with a null byte is correctly munged to remove the null byte.');
@@ -56,7 +56,7 @@ function testMungeNullByte() {
    * If the system.file.allow_insecure_uploads setting evaluates to true, the file should
    * come out untouched, no matter how evil the filename.
    */
-  function testMungeIgnoreInsecure() {
+  public function testMungeIgnoreInsecure() {
     $this->config('system.file')->set('allow_insecure_uploads', 1)->save();
     $munged_name = file_munge_filename($this->name, '');
     $this->assertIdentical($munged_name, $this->name, format_string('The original filename (%original) matches the munged filename (%munged) when insecure uploads are enabled.', ['%munged' => $munged_name, '%original' => $this->name]));
@@ -65,7 +65,7 @@ function testMungeIgnoreInsecure() {
   /**
    * White listed extensions are ignored by file_munge_filename().
    */
-  function testMungeIgnoreWhitelisted() {
+  public function testMungeIgnoreWhitelisted() {
     // Declare our extension as whitelisted. The declared extensions should
     // be case insensitive so test using one with a different case.
     $munged_name = file_munge_filename($this->nameWithUcExt, $this->badExtension);
@@ -78,7 +78,7 @@ function testMungeIgnoreWhitelisted() {
   /**
    * Ensure that unmunge gets your name back.
    */
-  function testUnMunge() {
+  public function testUnMunge() {
     $munged_name = file_munge_filename($this->name, '', FALSE);
     $unmunged_name = file_unmunge_filename($munged_name);
     $this->assertIdentical($unmunged_name, $this->name, format_string('The unmunged (%unmunged) filename matches the original (%original)', ['%unmunged' => $unmunged_name, '%original' => $this->name]));
diff --git a/core/tests/Drupal/KernelTests/Core/File/ReadOnlyStreamWrapperTest.php b/core/tests/Drupal/KernelTests/Core/File/ReadOnlyStreamWrapperTest.php
index ae19e0216780a4044d0649f92a66360a044936b8..00dfa0b8d32f2f0aa1e9eb6db01761cd257d6b59 100644
--- a/core/tests/Drupal/KernelTests/Core/File/ReadOnlyStreamWrapperTest.php
+++ b/core/tests/Drupal/KernelTests/Core/File/ReadOnlyStreamWrapperTest.php
@@ -29,7 +29,7 @@ class ReadOnlyStreamWrapperTest extends FileTestBase {
   /**
    * Test read-only specific behavior.
    */
-  function testReadOnlyBehavior() {
+  public function testReadOnlyBehavior() {
     $type = DummyReadOnlyStreamWrapper::getType();
     // Checks that the stream wrapper type is not declared as writable.
     $this->assertSame(0, $type & StreamWrapperInterface::WRITE);
diff --git a/core/tests/Drupal/KernelTests/Core/File/ScanDirectoryTest.php b/core/tests/Drupal/KernelTests/Core/File/ScanDirectoryTest.php
index 471c1aac7c6677b364b1aa70b9c5a1378f1c571b..0bd546bbef1448d9f18d9b370958bbd07ac183fc 100644
--- a/core/tests/Drupal/KernelTests/Core/File/ScanDirectoryTest.php
+++ b/core/tests/Drupal/KernelTests/Core/File/ScanDirectoryTest.php
@@ -33,7 +33,7 @@ protected function setUp() {
   /**
    * Check the format of the returned values.
    */
-  function testReturn() {
+  public function testReturn() {
     // Grab a listing of all the JavaScript files and check that they're
     // passed to the callback.
     $all_files = file_scan_directory($this->path, '/^javascript-/');
@@ -58,7 +58,7 @@ function testReturn() {
   /**
    * Check that the callback function is called correctly.
    */
-  function testOptionCallback() {
+  public function testOptionCallback() {
 
     // When nothing is matched nothing should be passed to the callback.
     $all_files = file_scan_directory($this->path, '/^NONEXISTINGFILENAME/', ['callback' => 'file_test_file_scan_callback']);
@@ -79,7 +79,7 @@ function testOptionCallback() {
   /**
    * Check that the no-mask parameter is honored.
    */
-  function testOptionNoMask() {
+  public function testOptionNoMask() {
     // Grab a listing of all the JavaScript files.
     $all_files = file_scan_directory($this->path, '/^javascript-/');
     $this->assertEqual(2, count($all_files), 'Found two, expected javascript files.');
@@ -92,7 +92,7 @@ function testOptionNoMask() {
   /**
    * Check that key parameter sets the return value's key.
    */
-  function testOptionKey() {
+  public function testOptionKey() {
     // "filename", for the path starting with $dir.
     $expected = [$this->path . '/javascript-1.txt', $this->path . '/javascript-2.script'];
     $actual = array_keys(file_scan_directory($this->path, '/^javascript-/', ['key' => 'filepath']));
@@ -121,7 +121,7 @@ function testOptionKey() {
   /**
    * Check that the recurse option descends into subdirectories.
    */
-  function testOptionRecurse() {
+  public function testOptionRecurse() {
     $files = file_scan_directory($this->path . '/..', '/^javascript-/', ['recurse' => FALSE]);
     $this->assertTrue(empty($files), "Without recursion couldn't find javascript files.");
 
@@ -134,7 +134,7 @@ function testOptionRecurse() {
    * Check that the min_depth options lets us ignore files in the starting
    * directory.
    */
-  function testOptionMinDepth() {
+  public function testOptionMinDepth() {
     $files = file_scan_directory($this->path, '/^javascript-/', ['min_depth' => 0]);
     $this->assertEqual(2, count($files), 'No minimum-depth gets files in current directory.');
 
diff --git a/core/tests/Drupal/KernelTests/Core/File/StreamWrapperTest.php b/core/tests/Drupal/KernelTests/Core/File/StreamWrapperTest.php
index 3db171da5c418b7126d5d829f0cf376b47fa4330..6c18b6654ccda69848b8851ae01feb81091fe681 100644
--- a/core/tests/Drupal/KernelTests/Core/File/StreamWrapperTest.php
+++ b/core/tests/Drupal/KernelTests/Core/File/StreamWrapperTest.php
@@ -35,7 +35,7 @@ class StreamWrapperTest extends FileTestBase {
    */
   protected $classname = 'Drupal\file_test\StreamWrapper\DummyStreamWrapper';
 
-  function setUp() {
+  public function setUp() {
     parent::setUp();
 
     // Add file_private_path setting.
@@ -47,7 +47,7 @@ function setUp() {
   /**
    * Test the getClassName() function.
    */
-  function testGetClassName() {
+  public function testGetClassName() {
     // Check the dummy scheme.
     $this->assertEqual($this->classname, \Drupal::service('stream_wrapper_manager')->getClass($this->scheme), 'Got correct class name for dummy scheme.');
     // Check core's scheme.
@@ -57,7 +57,7 @@ function testGetClassName() {
   /**
    * Test the getViaScheme() method.
    */
-  function testGetInstanceByScheme() {
+  public function testGetInstanceByScheme() {
     $instance = \Drupal::service('stream_wrapper_manager')->getViaScheme($this->scheme);
     $this->assertEqual($this->classname, get_class($instance), 'Got correct class type for dummy scheme.');
 
@@ -68,7 +68,7 @@ function testGetInstanceByScheme() {
   /**
    * Test the getViaUri() and getViaScheme() methods and target functions.
    */
-  function testUriFunctions() {
+  public function testUriFunctions() {
     $config = $this->config('system.file');
 
     $instance = \Drupal::service('stream_wrapper_manager')->getViaUri($this->scheme . '://foo');
@@ -104,7 +104,7 @@ function testUriFunctions() {
   /**
    * Test some file handle functions.
    */
-  function testFileFunctions() {
+  public function testFileFunctions() {
     $filename = 'public://' . $this->randomMachineName();
     file_put_contents($filename, str_repeat('d', 1000));
 
@@ -136,7 +136,7 @@ function testFileFunctions() {
   /**
    * Test the scheme functions.
    */
-  function testGetValidStreamScheme() {
+  public function testGetValidStreamScheme() {
     $this->assertEqual('foo', file_uri_scheme('foo://pork//chops'), 'Got the correct scheme from foo://asdf');
     $this->assertEqual('data', file_uri_scheme('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHwAAAABJRU5ErkJggg=='), 'Got the correct scheme from a data URI.');
     $this->assertFalse(file_uri_scheme('foo/bar.txt'), 'foo/bar.txt is not a valid stream.');
diff --git a/core/tests/Drupal/KernelTests/Core/File/UnmanagedCopyTest.php b/core/tests/Drupal/KernelTests/Core/File/UnmanagedCopyTest.php
index 6b2fbed250ae6850bd62ad7688f4744eca116002..6e4ca2aeb0cee0f89b96763c5f9bd0ad585f69b2 100644
--- a/core/tests/Drupal/KernelTests/Core/File/UnmanagedCopyTest.php
+++ b/core/tests/Drupal/KernelTests/Core/File/UnmanagedCopyTest.php
@@ -14,7 +14,7 @@ class UnmanagedCopyTest extends FileTestBase {
   /**
    * Copy a normal file.
    */
-  function testNormal() {
+  public function testNormal() {
     // Create a file for testing
     $uri = $this->createUri();
 
@@ -44,7 +44,7 @@ function testNormal() {
   /**
    * Copy a non-existent file.
    */
-  function testNonExistent() {
+  public function testNonExistent() {
     // Copy non-existent file
     $desired_filepath = $this->randomMachineName();
     $this->assertFalse(file_exists($desired_filepath), "Randomly named file doesn't exists.");
@@ -55,7 +55,7 @@ function testNonExistent() {
   /**
    * Copy a file onto itself.
    */
-  function testOverwriteSelf() {
+  public function testOverwriteSelf() {
     // Create a file for testing
     $uri = $this->createUri();
 
diff --git a/core/tests/Drupal/KernelTests/Core/File/UnmanagedDeleteRecursiveTest.php b/core/tests/Drupal/KernelTests/Core/File/UnmanagedDeleteRecursiveTest.php
index feed31b530e4745bc3fa2e9095a3e34ec72ada26..64045fea767a9801aed50522c1614546ec65c40f 100644
--- a/core/tests/Drupal/KernelTests/Core/File/UnmanagedDeleteRecursiveTest.php
+++ b/core/tests/Drupal/KernelTests/Core/File/UnmanagedDeleteRecursiveTest.php
@@ -11,7 +11,7 @@ class UnmanagedDeleteRecursiveTest extends FileTestBase {
   /**
    * Delete a normal file.
    */
-  function testSingleFile() {
+  public function testSingleFile() {
     // Create a file for testing
     $filepath = file_default_scheme() . '://' . $this->randomMachineName();
     file_put_contents($filepath, '');
@@ -24,7 +24,7 @@ function testSingleFile() {
   /**
    * Try deleting an empty directory.
    */
-  function testEmptyDirectory() {
+  public function testEmptyDirectory() {
     // A directory to operate on.
     $directory = $this->createDirectory();
 
@@ -36,7 +36,7 @@ function testEmptyDirectory() {
   /**
    * Try deleting a directory with some files.
    */
-  function testDirectory() {
+  public function testDirectory() {
     // A directory to operate on.
     $directory = $this->createDirectory();
     $filepathA = $directory . '/A';
@@ -54,7 +54,7 @@ function testDirectory() {
   /**
    * Try deleting subdirectories with some files.
    */
-  function testSubDirectory() {
+  public function testSubDirectory() {
     // A directory to operate on.
     $directory = $this->createDirectory();
     $subdirectory = $this->createDirectory($directory . '/sub');
diff --git a/core/tests/Drupal/KernelTests/Core/File/UnmanagedDeleteTest.php b/core/tests/Drupal/KernelTests/Core/File/UnmanagedDeleteTest.php
index 55e45360de9e8b32f247ad2c17c7335f9d1d3d57..d1cfb2e7dcee843752502dda09ddf816b5cf7d80 100644
--- a/core/tests/Drupal/KernelTests/Core/File/UnmanagedDeleteTest.php
+++ b/core/tests/Drupal/KernelTests/Core/File/UnmanagedDeleteTest.php
@@ -11,7 +11,7 @@ class UnmanagedDeleteTest extends FileTestBase {
   /**
    * Delete a normal file.
    */
-  function testNormal() {
+  public function testNormal() {
     // Create a file for testing
     $uri = $this->createUri();
 
@@ -23,7 +23,7 @@ function testNormal() {
   /**
    * Try deleting a missing file.
    */
-  function testMissing() {
+  public function testMissing() {
     // Try to delete a non-existing file
     $this->assertTrue(file_unmanaged_delete(file_default_scheme() . '/' . $this->randomMachineName()), 'Returns true when deleting a non-existent file.');
   }
@@ -31,7 +31,7 @@ function testMissing() {
   /**
    * Try deleting a directory.
    */
-  function testDirectory() {
+  public function testDirectory() {
     // A directory to operate on.
     $directory = $this->createDirectory();
 
diff --git a/core/tests/Drupal/KernelTests/Core/File/UnmanagedMoveTest.php b/core/tests/Drupal/KernelTests/Core/File/UnmanagedMoveTest.php
index 87a29f4a278b8ffd168af9d91e699c99244aa48c..8619a1507d07eb68add73accf829f3218f42f19b 100644
--- a/core/tests/Drupal/KernelTests/Core/File/UnmanagedMoveTest.php
+++ b/core/tests/Drupal/KernelTests/Core/File/UnmanagedMoveTest.php
@@ -14,7 +14,7 @@ class UnmanagedMoveTest extends FileTestBase {
   /**
    * Move a normal file.
    */
-  function testNormal() {
+  public function testNormal() {
     // Create a file for testing
     $uri = $this->createUri();
 
@@ -45,7 +45,7 @@ function testNormal() {
   /**
    * Try to move a missing file.
    */
-  function testMissing() {
+  public function testMissing() {
     // Move non-existent file.
     $new_filepath = file_unmanaged_move($this->randomMachineName(), $this->randomMachineName());
     $this->assertFalse($new_filepath, 'Moving a missing file fails.');
@@ -54,7 +54,7 @@ function testMissing() {
   /**
    * Try to move a file onto itself.
    */
-  function testOverwriteSelf() {
+  public function testOverwriteSelf() {
     // Create a file for testing.
     $uri = $this->createUri();
 
diff --git a/core/tests/Drupal/KernelTests/Core/File/UnmanagedSaveDataTest.php b/core/tests/Drupal/KernelTests/Core/File/UnmanagedSaveDataTest.php
index dc06d2cb81d24af218e66df761088ccb119dc119..549332338825d9cc13ec14725aef05db180c4536 100644
--- a/core/tests/Drupal/KernelTests/Core/File/UnmanagedSaveDataTest.php
+++ b/core/tests/Drupal/KernelTests/Core/File/UnmanagedSaveDataTest.php
@@ -11,7 +11,7 @@ class UnmanagedSaveDataTest extends FileTestBase {
   /**
    * Test the file_unmanaged_save_data() function.
    */
-  function testFileSaveData() {
+  public function testFileSaveData() {
     $contents = $this->randomMachineName(8);
     $this->setSetting('file_chmod_file', 0777);
 
diff --git a/core/tests/Drupal/KernelTests/Core/File/UrlRewritingTest.php b/core/tests/Drupal/KernelTests/Core/File/UrlRewritingTest.php
index e2294cba5be2defdf05f7311dc78ebf65b944e6b..35d2ca0246a24dd1e0a13f1a1acbb66d3ed3f4cf 100644
--- a/core/tests/Drupal/KernelTests/Core/File/UrlRewritingTest.php
+++ b/core/tests/Drupal/KernelTests/Core/File/UrlRewritingTest.php
@@ -21,7 +21,7 @@ class UrlRewritingTest extends FileTestBase {
   /**
    * Tests the rewriting of shipped file URLs by hook_file_url_alter().
    */
-  function testShippedFileURL()  {
+  public function testShippedFileURL()  {
     // Test generating a URL to a shipped file (i.e. a file that is part of
     // Drupal core, a module or a theme, for example a JavaScript file).
 
@@ -68,7 +68,7 @@ function testShippedFileURL()  {
   /**
    * Tests the rewriting of public managed file URLs by hook_file_url_alter().
    */
-  function testPublicManagedFileURL() {
+  public function testPublicManagedFileURL() {
     // Test generating a URL to a managed file.
 
     // Test alteration of file URLs to use a CDN.
@@ -94,7 +94,7 @@ function testPublicManagedFileURL() {
   /**
    * Test file_url_transform_relative().
    */
-  function testRelativeFileURL() {
+  public function testRelativeFileURL() {
     // Disable file_test.module's hook_file_url_alter() implementation.
     \Drupal::state()->set('file_test.hook_file_url_alter', NULL);
 
diff --git a/core/tests/Drupal/KernelTests/Core/Form/FormCacheTest.php b/core/tests/Drupal/KernelTests/Core/Form/FormCacheTest.php
index 7cc1ff8fa09974613b01d91215c33ec0f4965f8e..6425a3099d5c58db401320b595d094ca58020b30 100644
--- a/core/tests/Drupal/KernelTests/Core/Form/FormCacheTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Form/FormCacheTest.php
@@ -52,7 +52,7 @@ protected function setUp() {
   /**
    * Tests the form cache with a logged-in user.
    */
-  function testCacheToken() {
+  public function testCacheToken() {
     \Drupal::currentUser()->setAccount(new UserSession(['uid' => 1]));
     \Drupal::formBuilder()->setCache($this->formBuildId, $this->form, $this->formState);
 
@@ -83,7 +83,7 @@ function testCacheToken() {
   /**
    * Tests the form cache without a logged-in user.
    */
-  function testNoCacheToken() {
+  public function testNoCacheToken() {
     // Switch to a anonymous user account.
     $account_switcher = \Drupal::service('account_switcher');
     $account_switcher->switchTo(new AnonymousUserSession());
diff --git a/core/tests/Drupal/KernelTests/Core/Form/FormDefaultHandlersTest.php b/core/tests/Drupal/KernelTests/Core/Form/FormDefaultHandlersTest.php
index 021c65fce91821846388a79bedb114ba2eedfb5e..6d79f17cfbbd5a9adaf2dcee481d10e4a8a641ba 100644
--- a/core/tests/Drupal/KernelTests/Core/Form/FormDefaultHandlersTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Form/FormDefaultHandlersTest.php
@@ -85,7 +85,7 @@ public function submitForm(array &$form, FormStateInterface $form_state) {
   /**
    * Tests that default handlers are added even if custom are specified.
    */
-  function testDefaultAndCustomHandlers() {
+  public function testDefaultAndCustomHandlers() {
     $form_state = new FormState();
     $form_builder = $this->container->get('form_builder');
     $form_builder->submitForm($this, $form_state);
diff --git a/core/tests/Drupal/KernelTests/Core/Form/FormValidationMessageOrderTest.php b/core/tests/Drupal/KernelTests/Core/Form/FormValidationMessageOrderTest.php
index 33ff22b02e706c6b6b239b2d71f86740fc438660..1d20340819ea50e91c4388f4f999fd7ec8b9db1f 100644
--- a/core/tests/Drupal/KernelTests/Core/Form/FormValidationMessageOrderTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Form/FormValidationMessageOrderTest.php
@@ -75,7 +75,7 @@ public function submitForm(array &$form, FormStateInterface $form_state) {
   /**
    * Tests that fields validation messages are sorted in the fields order.
    */
-  function testLimitValidationErrors() {
+  public function testLimitValidationErrors() {
     $form_state = new FormState();
     $form_builder = $this->container->get('form_builder');
     $form_builder->submitForm($this, $form_state);
diff --git a/core/tests/Drupal/KernelTests/Core/Form/TriggeringElementProgrammedTest.php b/core/tests/Drupal/KernelTests/Core/Form/TriggeringElementProgrammedTest.php
index a51bc5d96623a4630fe1417c92c0da084683fc9d..b2552c8cca3a94ee687e1328db6b58ad217e7bd6 100644
--- a/core/tests/Drupal/KernelTests/Core/Form/TriggeringElementProgrammedTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Form/TriggeringElementProgrammedTest.php
@@ -66,7 +66,7 @@ public function submitForm(array &$form, FormStateInterface $form_state) {
   /**
    * Tests that #limit_validation_errors of the only submit button takes effect.
    */
-  function testLimitValidationErrors() {
+  public function testLimitValidationErrors() {
     // Programmatically submit the form.
     $form_state = new FormState();
     $form_state->setValue('section', 'one');
diff --git a/core/tests/Drupal/KernelTests/Core/Image/ToolkitGdTest.php b/core/tests/Drupal/KernelTests/Core/Image/ToolkitGdTest.php
index a3a57750a6d7b2162e9a59a088c157aa6fe1a155..bb2e481104cb00a6c0b370c20dbb5d82b4adc813 100644
--- a/core/tests/Drupal/KernelTests/Core/Image/ToolkitGdTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Image/ToolkitGdTest.php
@@ -67,7 +67,7 @@ protected function checkRequirements() {
   /**
    * Function to compare two colors by RGBa.
    */
-  function colorsAreEqual($color_a, $color_b) {
+  public function colorsAreEqual($color_a, $color_b) {
     // Fully transparent pixels are equal, regardless of RGB.
     if ($color_a[3] == 127 && $color_b[3] == 127) {
       return TRUE;
@@ -85,7 +85,7 @@ function colorsAreEqual($color_a, $color_b) {
   /**
    * Function for finding a pixel's RGBa values.
    */
-  function getPixelColor(ImageInterface $image, $x, $y) {
+  public function getPixelColor(ImageInterface $image, $x, $y) {
     $toolkit = $image->getToolkit();
     $color_index = imagecolorat($toolkit->getResource(), $x, $y);
 
@@ -102,7 +102,7 @@ function getPixelColor(ImageInterface $image, $x, $y) {
    * properly, build a list of expected color values for each of the corners and
    * the expected height and widths for the final images.
    */
-  function testManipulations() {
+  public function testManipulations() {
 
     // Test that the image factory is set to use the GD toolkit.
     $this->assertEqual($this->imageFactory->getToolkitId(), 'gd', 'The image factory is set to use the \'gd\' image toolkit.');
@@ -443,7 +443,7 @@ public function testResourceDestruction() {
   /**
    * Tests for GIF images with transparency.
    */
-  function testGifTransparentImages() {
+  public function testGifTransparentImages() {
     // Prepare a directory for test file results.
     $directory = Settings::get('file_public_path') . '/imagetest';
     file_prepare_directory($directory, FILE_CREATE_DIRECTORY);
@@ -508,7 +508,7 @@ function testGifTransparentImages() {
   /**
    * Tests calling a missing image operation plugin.
    */
-  function testMissingOperation() {
+  public function testMissingOperation() {
 
     // Test that the image factory is set to use the GD toolkit.
     $this->assertEqual($this->imageFactory->getToolkitId(), 'gd', 'The image factory is set to use the \'gd\' image toolkit.');
diff --git a/core/tests/Drupal/KernelTests/Core/Installer/InstallerLanguageTest.php b/core/tests/Drupal/KernelTests/Core/Installer/InstallerLanguageTest.php
index d619d38552d509a44a36f7a2f82b46415240c685..3f911938f1536492fe513535bdbf0b5fb2d2cad8 100644
--- a/core/tests/Drupal/KernelTests/Core/Installer/InstallerLanguageTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Installer/InstallerLanguageTest.php
@@ -15,7 +15,7 @@ class InstallerLanguageTest extends KernelTestBase {
   /**
    * Tests that the installer can find translation files.
    */
-  function testInstallerTranslationFiles() {
+  public function testInstallerTranslationFiles() {
     // Different translation files would be found depending on which language
     // we are looking for.
     $expected_translation_files = [
@@ -40,7 +40,7 @@ function testInstallerTranslationFiles() {
   /**
    * Tests profile info caching in non-English languages.
    */
-  function testInstallerTranslationCache() {
+  public function testInstallerTranslationCache() {
     require_once 'core/includes/install.inc';
 
     // Prime the drupal_get_filename() static cache with the location of the
diff --git a/core/tests/Drupal/KernelTests/Core/Installer/InstallerRedirectTraitTest.php b/core/tests/Drupal/KernelTests/Core/Installer/InstallerRedirectTraitTest.php
index 0aca302db3a086b0d4b3882a81ca83ecd7e6ebc3..1a24edaffe62615877bd68e3d6ddf4e3f751d39c 100644
--- a/core/tests/Drupal/KernelTests/Core/Installer/InstallerRedirectTraitTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Installer/InstallerRedirectTraitTest.php
@@ -66,7 +66,7 @@ public function providerShouldRedirectToInstaller() {
    * @covers ::shouldRedirectToInstaller
    * @dataProvider providerShouldRedirectToInstaller
    */
-  function testShouldRedirectToInstaller($expected, $exception, $connection, $connection_info, $session_table_exists = TRUE) {
+  public function testShouldRedirectToInstaller($expected, $exception, $connection, $connection_info, $session_table_exists = TRUE) {
     try {
       throw new $exception();
     }
diff --git a/core/tests/Drupal/KernelTests/Core/KeyValueStore/KeyValueContentEntityStorageTest.php b/core/tests/Drupal/KernelTests/Core/KeyValueStore/KeyValueContentEntityStorageTest.php
index 4fc9c7a719ef17fe03d99747bee55c9a572db77f..31300dbcd77a46eecbcc2d0a931380e34b683b32 100644
--- a/core/tests/Drupal/KernelTests/Core/KeyValueStore/KeyValueContentEntityStorageTest.php
+++ b/core/tests/Drupal/KernelTests/Core/KeyValueStore/KeyValueContentEntityStorageTest.php
@@ -32,7 +32,7 @@ protected function setUp() {
   /**
    * Tests CRUD operations.
    */
-  function testCRUD() {
+  public function testCRUD() {
     $default_langcode = \Drupal::languageManager()->getDefaultLanguage()->getId();
     // Verify default properties on a newly created empty entity.
     $empty = EntityTestLabel::create();
diff --git a/core/tests/Drupal/KernelTests/Core/Path/AliasTest.php b/core/tests/Drupal/KernelTests/Core/Path/AliasTest.php
index e432028037459e662901d423e61dd9ee996d7c81..9436115ff4799720f97a3a934a38ee0426d888b5 100644
--- a/core/tests/Drupal/KernelTests/Core/Path/AliasTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Path/AliasTest.php
@@ -15,7 +15,7 @@
  */
 class AliasTest extends PathUnitTestBase {
 
-  function testCRUD() {
+  public function testCRUD() {
     //Prepare database table.
     $connection = Database::getConnection();
     $this->fixtures->createTables($connection);
@@ -73,7 +73,7 @@ function testCRUD() {
     }
   }
 
-  function testLookupPath() {
+  public function testLookupPath() {
     //Prepare database table.
     $connection = Database::getConnection();
     $this->fixtures->createTables($connection);
@@ -155,7 +155,7 @@ function testLookupPath() {
   /**
    * Tests the alias whitelist.
    */
-  function testWhitelist() {
+  public function testWhitelist() {
     // Prepare database table.
     $connection = Database::getConnection();
     $this->fixtures->createTables($connection);
diff --git a/core/tests/Drupal/KernelTests/Core/Plugin/ContextPluginTest.php b/core/tests/Drupal/KernelTests/Core/Plugin/ContextPluginTest.php
index 10e35e559707e1532b44b63980bd75a1564c9e15..bd3bba53d09db8828097fb41083d48bbf6ec383b 100644
--- a/core/tests/Drupal/KernelTests/Core/Plugin/ContextPluginTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Plugin/ContextPluginTest.php
@@ -22,7 +22,7 @@ class ContextPluginTest extends KernelTestBase {
   /**
    * Tests basic context definition and value getters and setters.
    */
-  function testContext() {
+  public function testContext() {
     $this->installEntitySchema('user');
     $this->installEntitySchema('node');
     $this->installEntitySchema('node_type');
diff --git a/core/tests/Drupal/KernelTests/Core/Plugin/DerivativeTest.php b/core/tests/Drupal/KernelTests/Core/Plugin/DerivativeTest.php
index 7a834afcd8a5c398d3cb9e993532ad8ffc6e8dd1..251abbf47acc05e710e36e9575e71390187692b5 100644
--- a/core/tests/Drupal/KernelTests/Core/Plugin/DerivativeTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Plugin/DerivativeTest.php
@@ -12,7 +12,7 @@ class DerivativeTest extends PluginTestBase {
   /**
    * Tests getDefinitions() and getDefinition() with a derivativeDecorator.
    */
-  function testDerivativeDecorator() {
+  public function testDerivativeDecorator() {
     // Ensure that getDefinitions() returns the expected definitions.
     $this->assertEqual($this->mockBlockManager->getDefinitions(), $this->mockBlockExpectedDefinitions);
 
diff --git a/core/tests/Drupal/KernelTests/Core/Plugin/Discovery/DiscoveryTestBase.php b/core/tests/Drupal/KernelTests/Core/Plugin/Discovery/DiscoveryTestBase.php
index 054887707b5ae256b25e3edc9dabfa63887139ee..a3492ed223fa7cdbcdb9135c5fd01a1558cf9ec9 100644
--- a/core/tests/Drupal/KernelTests/Core/Plugin/Discovery/DiscoveryTestBase.php
+++ b/core/tests/Drupal/KernelTests/Core/Plugin/Discovery/DiscoveryTestBase.php
@@ -37,7 +37,7 @@ abstract class DiscoveryTestBase extends KernelTestBase {
   /**
    * Tests getDefinitions() and getDefinition().
    */
-  function testDiscoveryInterface() {
+  public function testDiscoveryInterface() {
     // Ensure that getDefinitions() returns the expected definitions.
     // For the arrays to be identical (instead of only equal), they must be
     // sorted equally, which seems unnecessary here.
diff --git a/core/tests/Drupal/KernelTests/Core/Plugin/FactoryTest.php b/core/tests/Drupal/KernelTests/Core/Plugin/FactoryTest.php
index 783f6bc7f4224f540481c78ab3c0edc4787ce473..50da5cfa2c5907f286bb70e26c53de0ecf0aa7d1 100644
--- a/core/tests/Drupal/KernelTests/Core/Plugin/FactoryTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Plugin/FactoryTest.php
@@ -14,7 +14,7 @@ class FactoryTest extends PluginTestBase {
   /**
    * Test that DefaultFactory can create a plugin instance.
    */
-  function testDefaultFactory() {
+  public function testDefaultFactory() {
     // Ensure a non-derivative plugin can be instantiated.
     $plugin = $this->testPluginManager->createInstance('user_login', ['title' => 'Please enter your login name and password']);
     $this->assertIdentical(get_class($plugin), 'Drupal\plugin_test\Plugin\plugin_test\mock_block\MockUserLoginBlock', 'Correct plugin class instantiated with default factory.');
@@ -44,7 +44,7 @@ function testDefaultFactory() {
    * reflection factory and it provides some additional variety in plugin
    * object creation.
    */
-  function testReflectionFactory() {
+  public function testReflectionFactory() {
     // Ensure a non-derivative plugin can be instantiated.
     $plugin = $this->mockBlockManager->createInstance('user_login', ['title' => 'Please enter your login name and password']);
     $this->assertIdentical(get_class($plugin), 'Drupal\plugin_test\Plugin\plugin_test\mock_block\MockUserLoginBlock', 'Correct plugin class instantiated.');
diff --git a/core/tests/Drupal/KernelTests/Core/Plugin/InspectionTest.php b/core/tests/Drupal/KernelTests/Core/Plugin/InspectionTest.php
index eaff844551cc43cba4f086e6b57c14ec9b6f0271..454165d46633e1feab01c88b84170e9d702b7d3a 100644
--- a/core/tests/Drupal/KernelTests/Core/Plugin/InspectionTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Plugin/InspectionTest.php
@@ -12,7 +12,7 @@ class InspectionTest extends PluginTestBase {
   /**
    * Ensure the test plugins correctly implement getPluginId() and getPluginDefinition().
    */
-  function testInspection() {
+  public function testInspection() {
     foreach (['user_login'] as $id) {
       $plugin = $this->testPluginManager->createInstance($id);
       $expected_definition = $this->testPluginExpectedDefinitions[$id];
diff --git a/core/tests/Drupal/KernelTests/Core/Render/Element/RenderElementTypesTest.php b/core/tests/Drupal/KernelTests/Core/Render/Element/RenderElementTypesTest.php
index 4cfb32c7dd9db4a3e448a271a129a515ae1467c1..906e74bb6a16155451f83ea3efc0afb15635d909 100644
--- a/core/tests/Drupal/KernelTests/Core/Render/Element/RenderElementTypesTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Render/Element/RenderElementTypesTest.php
@@ -51,7 +51,7 @@ protected function assertElements(array $elements, $expected_html, $message) {
   /**
    * Tests system #type 'container'.
    */
-  function testContainer() {
+  public function testContainer() {
     // Basic container with no attributes.
     $this->assertElements([
       '#type' => 'container',
@@ -79,7 +79,7 @@ function testContainer() {
   /**
    * Tests system #type 'html_tag'.
    */
-  function testHtmlTag() {
+  public function testHtmlTag() {
     // Test void element.
     $this->assertElements([
       '#type' => 'html_tag',
@@ -117,7 +117,7 @@ function testHtmlTag() {
   /**
    * Tests system #type 'more_link'.
    */
-  function testMoreLink() {
+  public function testMoreLink() {
     $elements = [
       [
         'name' => "#type 'more_link' anchor tag generation without extra classes",
@@ -197,7 +197,7 @@ function testMoreLink() {
   /**
    * Tests system #type 'system_compact_link'.
    */
-  function testSystemCompactLink() {
+  public function testSystemCompactLink() {
     $elements = [
       [
         'name' => "#type 'system_compact_link' when admin compact mode is off",
diff --git a/core/tests/Drupal/KernelTests/Core/Render/Element/TableSortExtenderTest.php b/core/tests/Drupal/KernelTests/Core/Render/Element/TableSortExtenderTest.php
index 10b215bb619fadaf5b2a91fc0a54d6812bd659c8..4291179f40583887920efcbd962f9c41d1049527 100644
--- a/core/tests/Drupal/KernelTests/Core/Render/Element/TableSortExtenderTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Render/Element/TableSortExtenderTest.php
@@ -16,7 +16,7 @@ class TableSortExtenderTest extends KernelTestBase {
   /**
    * Tests tablesort_init().
    */
-  function testTableSortInit() {
+  public function testTableSortInit() {
 
     // Test simple table headers.
 
diff --git a/core/tests/Drupal/KernelTests/Core/Render/Element/TableTest.php b/core/tests/Drupal/KernelTests/Core/Render/Element/TableTest.php
index 4fdb60edbbe0f626a68df6cdc9b0fcd679698e63..5966eaa745fd2bbfd722fc18eaa0e1c3ab553aff 100644
--- a/core/tests/Drupal/KernelTests/Core/Render/Element/TableTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Render/Element/TableTest.php
@@ -21,7 +21,7 @@ class TableTest extends KernelTestBase {
   /**
    * Tableheader.js provides 'sticky' table headers, and is included by default.
    */
-  function testThemeTableStickyHeaders() {
+  public function testThemeTableStickyHeaders() {
     $header = ['one', 'two', 'three'];
     $rows = [[1, 2, 3], [4, 5, 6], [7, 8, 9]];
     $table = [
@@ -40,7 +40,7 @@ function testThemeTableStickyHeaders() {
   /**
    * If $sticky is FALSE, no tableheader.js should be included.
    */
-  function testThemeTableNoStickyHeaders() {
+  public function testThemeTableNoStickyHeaders() {
     $header = ['one', 'two', 'three'];
     $rows = [[1, 2, 3], [4, 5, 6], [7, 8, 9]];
     $attributes = [];
@@ -66,7 +66,7 @@ function testThemeTableNoStickyHeaders() {
    * Tests that the table header is printed correctly even if there are no rows,
    * and that the empty text is displayed correctly.
    */
-  function testThemeTableWithEmptyMessage() {
+  public function testThemeTableWithEmptyMessage() {
     $header = [
       'Header 1',
       [
@@ -94,7 +94,7 @@ function testThemeTableWithEmptyMessage() {
   /**
    * Tests that the 'no_striping' option works correctly.
    */
-  function testThemeTableWithNoStriping() {
+  public function testThemeTableWithNoStriping() {
     $rows = [
       [
         'data' => [1],
@@ -113,7 +113,7 @@ function testThemeTableWithNoStriping() {
   /**
    * Test that the 'footer' option works correctly.
    */
-  function testThemeTableFooter() {
+  public function testThemeTableFooter() {
     $footer = [
       [
         'data' => [1],
@@ -135,7 +135,7 @@ function testThemeTableFooter() {
   /**
    * Tests that the 'header' option in cells works correctly.
    */
-  function testThemeTableHeaderCellOption() {
+  public function testThemeTableHeaderCellOption() {
     $rows = [
       [
         ['data' => 1, 'header' => TRUE],
diff --git a/core/tests/Drupal/KernelTests/Core/Render/RenderTest.php b/core/tests/Drupal/KernelTests/Core/Render/RenderTest.php
index 88f993e72514300efc3ebf8903332019b8da1a23..a64b553a16dd581cfbbfe20b47dc7d866e962a9b 100644
--- a/core/tests/Drupal/KernelTests/Core/Render/RenderTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Render/RenderTest.php
@@ -21,7 +21,7 @@ class RenderTest extends KernelTestBase {
   /**
    * Tests theme preprocess functions being able to attach assets.
    */
-  function testDrupalRenderThemePreprocessAttached() {
+  public function testDrupalRenderThemePreprocessAttached() {
     \Drupal::state()->set('theme_preprocess_attached_test', TRUE);
 
     $test_element = [
diff --git a/core/tests/Drupal/KernelTests/Core/Routing/ContentNegotiationRoutingTest.php b/core/tests/Drupal/KernelTests/Core/Routing/ContentNegotiationRoutingTest.php
index 812e4378bc611eac53d400840440316c575a7d26..052e74f35bcd667cdcffda4ba670b59e2c9bea9d 100644
--- a/core/tests/Drupal/KernelTests/Core/Routing/ContentNegotiationRoutingTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Routing/ContentNegotiationRoutingTest.php
@@ -36,7 +36,7 @@ public function register(ContainerBuilder $container) {
   /**
    * Tests the content negotiation aspect of routing.
    */
-  function testContentRouting() {
+  public function testContentRouting() {
     /** @var \Drupal\Core\Path\AliasStorageInterface $path_alias_storage */
     $path_alias_storage = $this->container->get('path.alias_storage');
     // Alias with extension pointing to no extension/constant content-type.
diff --git a/core/tests/Drupal/KernelTests/Core/Routing/MatcherDumperTest.php b/core/tests/Drupal/KernelTests/Core/Routing/MatcherDumperTest.php
index 3054ecb165d21df7f73b03cf7e22854f823056b5..1428fde95f0ad9e717571316c9c4f08291a5e24e 100644
--- a/core/tests/Drupal/KernelTests/Core/Routing/MatcherDumperTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Routing/MatcherDumperTest.php
@@ -44,7 +44,7 @@ protected function setUp() {
   /**
    * Confirms that the dumper can be instantiated successfully.
    */
-  function testCreate() {
+  public function testCreate() {
     $connection = Database::getConnection();
     $dumper = new MatcherDumper($connection, $this->state);
 
@@ -55,7 +55,7 @@ function testCreate() {
   /**
    * Confirms that we can add routes to the dumper.
    */
-  function testAddRoutes() {
+  public function testAddRoutes() {
     $connection = Database::getConnection();
     $dumper = new MatcherDumper($connection, $this->state);
 
@@ -76,7 +76,7 @@ function testAddRoutes() {
   /**
    * Confirms that we can add routes to the dumper when it already has some.
    */
-  function testAddAdditionalRoutes() {
+  public function testAddAdditionalRoutes() {
     $connection = Database::getConnection();
     $dumper = new MatcherDumper($connection, $this->state);
 
diff --git a/core/tests/Drupal/KernelTests/Core/Routing/RouteProviderTest.php b/core/tests/Drupal/KernelTests/Core/Routing/RouteProviderTest.php
index 835c812ca9297f5f87bcb0f54e85e02fdea1ec03..ed59f2f0ffecc2906725e5fa4627ca6836e6cf69 100644
--- a/core/tests/Drupal/KernelTests/Core/Routing/RouteProviderTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Routing/RouteProviderTest.php
@@ -145,7 +145,7 @@ public function testEmptyPathCandidatesOutlines() {
   /**
    * Confirms that we can find routes with the exact incoming path.
    */
-  function testExactPathMatch() {
+  public function testExactPathMatch() {
     $connection = Database::getConnection();
     $provider = new RouteProvider($connection, $this->state, $this->currentPath, $this->cache, $this->pathProcessor, $this->cacheTagsInvalidator, 'test_routes');
 
@@ -169,7 +169,7 @@ function testExactPathMatch() {
   /**
    * Confirms that we can find routes whose pattern would match the request.
    */
-  function testOutlinePathMatch() {
+  public function testOutlinePathMatch() {
     $connection = Database::getConnection();
     $provider = new RouteProvider($connection, $this->state, $this->currentPath, $this->cache, $this->pathProcessor, $this->cacheTagsInvalidator, 'test_routes');
 
@@ -299,7 +299,7 @@ public function testDuplicateRoutePaths($path, $number, $expected_route_name = N
   /**
    * Confirms that a trailing slash on the request does not result in a 404.
    */
-  function testOutlinePathMatchTrailingSlash() {
+  public function testOutlinePathMatchTrailingSlash() {
     $connection = Database::getConnection();
     $provider = new RouteProvider($connection, $this->state, $this->currentPath, $this->cache, $this->pathProcessor, $this->cacheTagsInvalidator, 'test_routes');
 
@@ -328,7 +328,7 @@ function testOutlinePathMatchTrailingSlash() {
   /**
    * Confirms that we can find routes whose pattern would match the request.
    */
-  function testOutlinePathMatchDefaults() {
+  public function testOutlinePathMatchDefaults() {
     $connection = Database::getConnection();
     $provider = new RouteProvider($connection, $this->state, $this->currentPath, $this->cache, $this->pathProcessor, $this->cacheTagsInvalidator, 'test_routes');
 
@@ -366,7 +366,7 @@ function testOutlinePathMatchDefaults() {
   /**
    * Confirms that we can find routes whose pattern would match the request.
    */
-  function testOutlinePathMatchDefaultsCollision() {
+  public function testOutlinePathMatchDefaultsCollision() {
     $connection = Database::getConnection();
     $provider = new RouteProvider($connection, $this->state, $this->currentPath, $this->cache, $this->pathProcessor, $this->cacheTagsInvalidator, 'test_routes');
 
@@ -405,7 +405,7 @@ function testOutlinePathMatchDefaultsCollision() {
   /**
    * Confirms that we can find routes whose pattern would match the request.
    */
-  function testOutlinePathMatchDefaultsCollision2() {
+  public function testOutlinePathMatchDefaultsCollision2() {
     $connection = Database::getConnection();
     $provider = new RouteProvider($connection, $this->state, $this->currentPath, $this->cache, $this->pathProcessor, $this->cacheTagsInvalidator, 'test_routes');
 
@@ -444,7 +444,7 @@ function testOutlinePathMatchDefaultsCollision2() {
   /**
    * Confirms that we can find multiple routes that match the request equally.
    */
-  function testOutlinePathMatchDefaultsCollision3() {
+  public function testOutlinePathMatchDefaultsCollision3() {
     $connection = Database::getConnection();
     $provider = new RouteProvider($connection, $this->state, $this->currentPath, $this->cache, $this->pathProcessor, $this->cacheTagsInvalidator, 'test_routes');
 
@@ -518,7 +518,7 @@ public function testOutlinePathMatchZero() {
   /**
    * Confirms that an exception is thrown when no matching path is found.
    */
-  function testOutlinePathNoMatch() {
+  public function testOutlinePathNoMatch() {
     $connection = Database::getConnection();
     $provider = new RouteProvider($connection, $this->state, $this->currentPath, $this->cache, $this->pathProcessor, $this->cacheTagsInvalidator, 'test_routes');
 
diff --git a/core/tests/Drupal/KernelTests/Core/ServiceProvider/ServiceProviderTest.php b/core/tests/Drupal/KernelTests/Core/ServiceProvider/ServiceProviderTest.php
index 011dfb70d80bd08947cc4055581de1c1599ddc08..970ea0486dd50ff64f654973e2b6d2cfa531ce25 100644
--- a/core/tests/Drupal/KernelTests/Core/ServiceProvider/ServiceProviderTest.php
+++ b/core/tests/Drupal/KernelTests/Core/ServiceProvider/ServiceProviderTest.php
@@ -21,7 +21,7 @@ class ServiceProviderTest extends KernelTestBase {
   /**
    * Tests that services provided by module service providers get registered to the DIC.
    */
-  function testServiceProviderRegistration() {
+  public function testServiceProviderRegistration() {
     $definition = $this->container->getDefinition('file.usage');
     $this->assertTrue($definition->getClass() == 'Drupal\\service_provider_test\\TestFileUsage', 'Class has been changed');
     $this->assertTrue(\Drupal::hasService('service_provider_test_class'), 'The service_provider_test_class service has been registered to the DIC');
@@ -30,7 +30,7 @@ function testServiceProviderRegistration() {
   /**
    * Tests that the DIC keeps up with module enable/disable in the same request.
    */
-  function testServiceProviderRegistrationDynamic() {
+  public function testServiceProviderRegistrationDynamic() {
     // Uninstall the module and ensure the service provider's service is not registered.
     \Drupal::service('module_installer')->uninstall(['service_provider_test']);
     $this->assertFalse(\Drupal::hasService('service_provider_test_class'), 'The service_provider_test_class service does not exist in the DIC.');
diff --git a/core/tests/Drupal/KernelTests/Core/Site/SettingsRewriteTest.php b/core/tests/Drupal/KernelTests/Core/Site/SettingsRewriteTest.php
index a015d07608a23288b5ff4521726c4866935bd749..ef593751bf2cbc28aa97fa370146260008b1ca07 100644
--- a/core/tests/Drupal/KernelTests/Core/Site/SettingsRewriteTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Site/SettingsRewriteTest.php
@@ -15,7 +15,7 @@ class SettingsRewriteTest extends KernelTestBase {
   /**
    * Tests the drupal_rewrite_settings() function.
    */
-  function testDrupalRewriteSettings() {
+  public function testDrupalRewriteSettings() {
     include_once \Drupal::root() . '/core/includes/install.inc';
     $site_path = $this->container->get('site.path');
     $tests = [
diff --git a/core/tests/Drupal/KernelTests/Core/Theme/ImageTest.php b/core/tests/Drupal/KernelTests/Core/Theme/ImageTest.php
index dd8ef7cc5520e08730bdc20890f184b7ccc449dd..72cecce229cf1e23c38bd98db2d3c89139e9b1d5 100644
--- a/core/tests/Drupal/KernelTests/Core/Theme/ImageTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Theme/ImageTest.php
@@ -45,7 +45,7 @@ protected function setUp() {
   /**
    * Tests that an image with the sizes attribute is output correctly.
    */
-  function testThemeImageWithSizes() {
+  public function testThemeImageWithSizes() {
     // Test with multipliers.
     $sizes = '(max-width: ' . rand(10, 30) . 'em) 100vw, (max-width: ' . rand(30, 50) . 'em) 50vw, 30vw';
     $image = [
@@ -66,7 +66,7 @@ function testThemeImageWithSizes() {
   /**
    * Tests that an image with the src attribute is output correctly.
    */
-  function testThemeImageWithSrc() {
+  public function testThemeImageWithSrc() {
 
     $image = [
       '#theme' => 'image',
@@ -85,7 +85,7 @@ function testThemeImageWithSrc() {
   /**
    * Tests that an image with the srcset and multipliers is output correctly.
    */
-  function testThemeImageWithSrcsetMultiplier() {
+  public function testThemeImageWithSrcsetMultiplier() {
     // Test with multipliers.
     $image = [
       '#theme' => 'image',
@@ -113,7 +113,7 @@ function testThemeImageWithSrcsetMultiplier() {
   /**
    * Tests that an image with the srcset and widths is output correctly.
    */
-  function testThemeImageWithSrcsetWidth() {
+  public function testThemeImageWithSrcsetWidth() {
     // Test with multipliers.
     $widths = [
       rand(0, 500) . 'w',
diff --git a/core/tests/Drupal/KernelTests/Core/Theme/MessageTest.php b/core/tests/Drupal/KernelTests/Core/Theme/MessageTest.php
index 985a57ab98e016766eb267490daebc95a4ec5ada..294c8dce813f4cbee2c0413ec5de67ba23a3acab 100644
--- a/core/tests/Drupal/KernelTests/Core/Theme/MessageTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Theme/MessageTest.php
@@ -19,7 +19,7 @@ class MessageTest extends KernelTestBase {
   /**
    * Tests setting messages output.
    */
-  function testMessages() {
+  public function testMessages() {
     // Enable the Classy theme.
     \Drupal::service('theme_handler')->install(['classy']);
     $this->config('system.theme')->set('default', 'classy')->save();
diff --git a/core/tests/Drupal/KernelTests/Core/Theme/RegistryTest.php b/core/tests/Drupal/KernelTests/Core/Theme/RegistryTest.php
index bbd7342ba3657b0faf40dd527ef87267eb826f8c..a962fecc58f179c768c7f5d784af47149621ba57 100644
--- a/core/tests/Drupal/KernelTests/Core/Theme/RegistryTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Theme/RegistryTest.php
@@ -27,7 +27,7 @@ class RegistryTest extends KernelTestBase {
   /**
    * Tests the behavior of the theme registry class.
    */
-  function testRaceCondition() {
+  public function testRaceCondition() {
     // The theme registry is not marked as persistable in case we don't have a
     // proper request.
     \Drupal::request()->setMethod('GET');
diff --git a/core/tests/Drupal/KernelTests/Core/Theme/ThemeInstallerTest.php b/core/tests/Drupal/KernelTests/Core/Theme/ThemeInstallerTest.php
index cbaf0a3d20eae64eaa665a0a438e6d0e427f39d3..61f647528d0789c543420f0dc9dcdc182337df6b 100644
--- a/core/tests/Drupal/KernelTests/Core/Theme/ThemeInstallerTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Theme/ThemeInstallerTest.php
@@ -39,7 +39,7 @@ protected function setUp() {
   /**
    * Verifies that no themes are installed by default.
    */
-  function testEmpty() {
+  public function testEmpty() {
     $this->assertFalse($this->extensionConfig()->get('theme'));
 
     $this->assertFalse(array_keys($this->themeHandler()->listInfo()));
@@ -55,7 +55,7 @@ function testEmpty() {
   /**
    * Tests installing a theme.
    */
-  function testInstall() {
+  public function testInstall() {
     $name = 'test_basetheme';
 
     $themes = $this->themeHandler()->listInfo();
@@ -80,7 +80,7 @@ function testInstall() {
   /**
    * Tests installing a sub-theme.
    */
-  function testInstallSubTheme() {
+  public function testInstallSubTheme() {
     $name = 'test_subtheme';
     $base_name = 'test_basetheme';
 
@@ -103,7 +103,7 @@ function testInstallSubTheme() {
   /**
    * Tests installing a non-existing theme.
    */
-  function testInstallNonExisting() {
+  public function testInstallNonExisting() {
     $name = 'non_existing_theme';
 
     $themes = $this->themeHandler()->listInfo();
@@ -125,7 +125,7 @@ function testInstallNonExisting() {
   /**
    * Tests installing a theme with a too long name.
    */
-  function testInstallNameTooLong() {
+  public function testInstallNameTooLong() {
     $name = 'test_theme_having_veery_long_name_which_is_too_long';
 
     try {
@@ -141,7 +141,7 @@ function testInstallNameTooLong() {
   /**
    * Tests uninstalling the default theme.
    */
-  function testUninstallDefault() {
+  public function testUninstallDefault() {
     $name = 'stark';
     $other_name = 'bartik';
     $this->themeInstaller()->install([$name, $other_name]);
@@ -168,7 +168,7 @@ function testUninstallDefault() {
   /**
    * Tests uninstalling the admin theme.
    */
-  function testUninstallAdmin() {
+  public function testUninstallAdmin() {
     $name = 'stark';
     $other_name = 'bartik';
     $this->themeInstaller()->install([$name, $other_name]);
@@ -195,7 +195,7 @@ function testUninstallAdmin() {
   /**
    * Tests uninstalling a sub-theme.
    */
-  function testUninstallSubTheme() {
+  public function testUninstallSubTheme() {
     $name = 'test_subtheme';
     $base_name = 'test_basetheme';
 
@@ -210,7 +210,7 @@ function testUninstallSubTheme() {
   /**
    * Tests uninstalling a base theme before its sub-theme.
    */
-  function testUninstallBaseBeforeSubTheme() {
+  public function testUninstallBaseBeforeSubTheme() {
     $name = 'test_basetheme';
     $sub_name = 'test_subtheme';
 
@@ -240,7 +240,7 @@ function testUninstallBaseBeforeSubTheme() {
   /**
    * Tests uninstalling a non-existing theme.
    */
-  function testUninstallNonExisting() {
+  public function testUninstallNonExisting() {
     $name = 'non_existing_theme';
 
     $themes = $this->themeHandler()->listInfo();
@@ -262,7 +262,7 @@ function testUninstallNonExisting() {
   /**
    * Tests uninstalling a theme.
    */
-  function testUninstall() {
+  public function testUninstall() {
     $name = 'test_basetheme';
 
     $this->themeInstaller()->install([$name]);
@@ -287,7 +287,7 @@ function testUninstall() {
   /**
    * Tests uninstalling a theme that is not installed.
    */
-  function testUninstallNotInstalled() {
+  public function testUninstallNotInstalled() {
     $name = 'test_basetheme';
 
     try {
@@ -305,7 +305,7 @@ function testUninstallNotInstalled() {
    *
    * @see module_test_system_info_alter()
    */
-  function testThemeInfoAlter() {
+  public function testThemeInfoAlter() {
     $name = 'seven';
     $this->container->get('state')->set('module_test.hook_system_info_alter', TRUE);
 
diff --git a/core/tests/Drupal/KernelTests/Core/Theme/ThemeSettingsTest.php b/core/tests/Drupal/KernelTests/Core/Theme/ThemeSettingsTest.php
index d74df1422a7421af046f91365aa31f8deb220d0f..a077c25a853c305808c230bf39c0d9fc8d2f6408 100644
--- a/core/tests/Drupal/KernelTests/Core/Theme/ThemeSettingsTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Theme/ThemeSettingsTest.php
@@ -41,7 +41,7 @@ protected function setUp() {
   /**
    * Tests that $theme.settings are imported and used as default theme settings.
    */
-  function testDefaultConfig() {
+  public function testDefaultConfig() {
     $name = 'test_basetheme';
     $path = $this->availableThemes[$name]->getPath();
     $this->assertTrue(file_exists("$path/" . InstallStorage::CONFIG_INSTALL_DIRECTORY . "/$name.settings.yml"));
@@ -52,7 +52,7 @@ function testDefaultConfig() {
   /**
    * Tests that the $theme.settings default config file is optional.
    */
-  function testNoDefaultConfig() {
+  public function testNoDefaultConfig() {
     $name = 'stark';
     $path = $this->availableThemes[$name]->getPath();
     $this->assertFalse(file_exists("$path/" . InstallStorage::CONFIG_INSTALL_DIRECTORY . "/$name.settings.yml"));
diff --git a/core/tests/Drupal/KernelTests/Core/Update/CompatibilityFixTest.php b/core/tests/Drupal/KernelTests/Core/Update/CompatibilityFixTest.php
index ee1b6e177d04d693f9445aebb9350abb0533d7eb..a724623ec37e5db7168f2bcdc597bc5a957d1bfc 100644
--- a/core/tests/Drupal/KernelTests/Core/Update/CompatibilityFixTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Update/CompatibilityFixTest.php
@@ -21,7 +21,7 @@ protected function setUp() {
     require_once \Drupal::root() . '/core/includes/update.inc';
   }
 
-  function testFixCompatibility() {
+  public function testFixCompatibility() {
     $extension_config = \Drupal::configFactory()->getEditable('core.extension');
 
     // Add an incompatible/non-existent module to the config.
diff --git a/core/tests/Drupal/KernelTests/Core/Url/LinkGenerationTest.php b/core/tests/Drupal/KernelTests/Core/Url/LinkGenerationTest.php
index 3d7ce5ecff8140d2d2641c74f50f19a820b8d353..16452d011150b135bb6efe0b1140fa12fd79ee37 100644
--- a/core/tests/Drupal/KernelTests/Core/Url/LinkGenerationTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Url/LinkGenerationTest.php
@@ -19,7 +19,7 @@ class LinkGenerationTest extends KernelTestBase {
   /**
    * Tests how hook_link_alter() can affect escaping of the link text.
    */
-  function testHookLinkAlter() {
+  public function testHookLinkAlter() {
     $url = Url::fromUri('http://example.com');
     $renderer = \Drupal::service('renderer');
 
diff --git a/core/tests/Drupal/Tests/Component/Render/HtmlEscapedTextTest.php b/core/tests/Drupal/Tests/Component/Render/HtmlEscapedTextTest.php
index bdbe2b3cc8c9b5b50cb121c0870dd565b50a76d8..c064e2c2a078d7b61a986933179c6a13920836a1 100644
--- a/core/tests/Drupal/Tests/Component/Render/HtmlEscapedTextTest.php
+++ b/core/tests/Drupal/Tests/Component/Render/HtmlEscapedTextTest.php
@@ -31,7 +31,7 @@ public function testToString($text, $expected, $message) {
    *
    * @see testToString()
    */
-  function providerToString() {
+  public function providerToString() {
     // Checks that invalid multi-byte sequences are escaped.
     $tests[] = ["Foo\xC0barbaz", 'Foo�barbaz', 'Escapes invalid sequence "Foo\xC0barbaz"'];
     $tests[] = ["\xc2\"", '�&quot;', 'Escapes invalid sequence "\xc2\""'];
diff --git a/core/tests/Drupal/Tests/Component/Utility/SafeMarkupTest.php b/core/tests/Drupal/Tests/Component/Utility/SafeMarkupTest.php
index 7495fa5f0153f36a8baa51299f0a085d93317c49..0a7fc77d811bbe8895517565829faba5883f294f 100644
--- a/core/tests/Drupal/Tests/Component/Utility/SafeMarkupTest.php
+++ b/core/tests/Drupal/Tests/Component/Utility/SafeMarkupTest.php
@@ -56,7 +56,7 @@ public function testIsSafe() {
    * @param string $message
    *   The message to provide as output for the test.
    */
-  function testCheckPlain($text, $expected, $message) {
+  public function testCheckPlain($text, $expected, $message) {
     $result = SafeMarkup::checkPlain($text);
     $this->assertTrue($result instanceof HtmlEscapedText);
     $this->assertEquals($expected, $result, $message);
@@ -77,7 +77,7 @@ function testCheckPlain($text, $expected, $message) {
    * @param string $message
    *   The message to provide as output for the test.
    */
-  function testHtmlEscapedText($text, $expected, $message) {
+  public function testHtmlEscapedText($text, $expected, $message) {
     $result = new HtmlEscapedText($text);
     $this->assertEquals($expected, $result, $message);
   }
@@ -87,7 +87,7 @@ function testHtmlEscapedText($text, $expected, $message) {
    *
    * @see testCheckPlain()
    */
-  function providerCheckPlain() {
+  public function providerCheckPlain() {
     // Checks that invalid multi-byte sequences are escaped.
     $tests[] = ["Foo\xC0barbaz", 'Foo�barbaz', 'Escapes invalid sequence "Foo\xC0barbaz"'];
     $tests[] = ["\xc2\"", '�&quot;', 'Escapes invalid sequence "\xc2\""'];
@@ -136,7 +136,7 @@ public function testFormat($string, array $args, $expected, $message, $expected_
    *
    * @see testFormat()
    */
-  function providerFormat() {
+  public function providerFormat() {
     $tests[] = ['Simple text', [], 'Simple text', 'SafeMarkup::format leaves simple text alone.', TRUE];
     $tests[] = ['Escaped text: @value', ['@value' => '<script>'], 'Escaped text: &lt;script&gt;', 'SafeMarkup::format replaces and escapes string.', TRUE];
     $tests[] = ['Escaped text: @value', ['@value' => SafeMarkupTestMarkup::create('<span>Safe HTML</span>')], 'Escaped text: <span>Safe HTML</span>', 'SafeMarkup::format does not escape an already safe string.', TRUE];
diff --git a/core/tests/Drupal/Tests/Core/Asset/CssCollectionGrouperUnitTest.php b/core/tests/Drupal/Tests/Core/Asset/CssCollectionGrouperUnitTest.php
index c75dc0442801e1c09493cae794d3d1ca2d0dd209..b5e6bc8a4aadb3bfe496b778c6ee6fda3e83c651 100644
--- a/core/tests/Drupal/Tests/Core/Asset/CssCollectionGrouperUnitTest.php
+++ b/core/tests/Drupal/Tests/Core/Asset/CssCollectionGrouperUnitTest.php
@@ -28,7 +28,7 @@ protected function setUp() {
   /**
    * Tests \Drupal\Core\Asset\CssCollectionGrouper.
    */
-  function testGrouper() {
+  public function testGrouper() {
     $css_assets = [
       'system.base.css' => [
         'group' => -100,
diff --git a/core/tests/Drupal/Tests/Core/Asset/CssCollectionRendererUnitTest.php b/core/tests/Drupal/Tests/Core/Asset/CssCollectionRendererUnitTest.php
index 96a43b0b99aa1f98be5c0e7c6978c3a38e34856a..c7f1f3d562c987c7092b06cd3edaa560f385f137 100644
--- a/core/tests/Drupal/Tests/Core/Asset/CssCollectionRendererUnitTest.php
+++ b/core/tests/Drupal/Tests/Core/Asset/CssCollectionRendererUnitTest.php
@@ -75,7 +75,7 @@ protected function setUp() {
    *
    * @see testRender
    */
-  function providerTestRender() {
+  public function providerTestRender() {
     $create_link_element = function($href, $media = 'all', $browsers = []) {
       return [
         '#type' => 'html_tag',
@@ -437,7 +437,7 @@ function providerTestRender() {
    *
    * @dataProvider providerTestRender
    */
-  function testRender(array $css_assets, array $render_elements) {
+  public function testRender(array $css_assets, array $render_elements) {
     $this->state->expects($this->once())
       ->method('get')
       ->with('system.css_js_query_string')
@@ -448,7 +448,7 @@ function testRender(array $css_assets, array $render_elements) {
   /**
    * Tests a CSS asset group with the invalid 'type' => 'internal'.
    */
-  function testRenderInvalidType() {
+  public function testRenderInvalidType() {
     $this->state->expects($this->once())
       ->method('get')
       ->with('system.css_js_query_string')
diff --git a/core/tests/Drupal/Tests/Core/Asset/CssOptimizerUnitTest.php b/core/tests/Drupal/Tests/Core/Asset/CssOptimizerUnitTest.php
index cf7d3ff9849ff717ff20b63800f5ba8f0b810510..59ddca0e0ceb1baf5d6ab010ac461eb37813bac0 100644
--- a/core/tests/Drupal/Tests/Core/Asset/CssOptimizerUnitTest.php
+++ b/core/tests/Drupal/Tests/Core/Asset/CssOptimizerUnitTest.php
@@ -33,7 +33,7 @@ protected function setUp() {
   /**
    * Provides data for the CSS asset optimizing test.
    */
-  function providerTestOptimize() {
+  public function providerTestOptimize() {
     $path = 'core/tests/Drupal/Tests/Core/Asset/css_test_files/';
     $absolute_path = dirname(__FILE__) . '/css_test_files/';
     return [
@@ -208,7 +208,7 @@ function providerTestOptimize() {
    *
    * @dataProvider providerTestOptimize
    */
-  function testOptimize($css_asset, $expected) {
+  public function testOptimize($css_asset, $expected) {
     global $base_path;
     $original_base_path = $base_path;
     $base_path = '/';
@@ -226,7 +226,7 @@ function testOptimize($css_asset, $expected) {
   /**
    * Tests a file CSS asset with preprocessing disabled.
    */
-  function testTypeFilePreprocessingDisabled() {
+  public function testTypeFilePreprocessingDisabled() {
     $this->setExpectedException('Exception', 'Only file CSS assets with preprocessing enabled can be optimized.');
 
     $css_asset = [
@@ -246,7 +246,7 @@ function testTypeFilePreprocessingDisabled() {
   /**
    * Tests a CSS asset with 'type' => 'external'.
    */
-  function testTypeExternal() {
+  public function testTypeExternal() {
     $this->setExpectedException('Exception', 'Only file CSS assets can be optimized.');
 
     $css_asset = [
diff --git a/core/tests/Drupal/Tests/Core/Asset/JsOptimizerUnitTest.php b/core/tests/Drupal/Tests/Core/Asset/JsOptimizerUnitTest.php
index e2d55efe21ff2163a5b9f39da53931e98183cd60..39a4d00f6181e5b0ae6fa07d1deb917f9005ba0f 100644
--- a/core/tests/Drupal/Tests/Core/Asset/JsOptimizerUnitTest.php
+++ b/core/tests/Drupal/Tests/Core/Asset/JsOptimizerUnitTest.php
@@ -36,7 +36,7 @@ protected function setUp() {
    * @returns array
    *   An array of test data.
    */
-  function providerTestClean() {
+  public function providerTestClean() {
     $path = dirname(__FILE__) . '/js_test_files/';
     return [
       // File. Tests:
@@ -71,7 +71,7 @@ function providerTestClean() {
    *
    * @dataProvider providerTestClean
    */
-  function testClean($js_asset, $expected) {
+  public function testClean($js_asset, $expected) {
     $this->assertEquals($expected, $this->optimizer->clean($js_asset));
   }
 
@@ -83,7 +83,7 @@ function testClean($js_asset, $expected) {
    * @returns array
    *   An array of test data.
    */
-  function providerTestOptimize() {
+  public function providerTestOptimize() {
     $path = dirname(__FILE__) . '/js_test_files/';
     return [
       0 => [
@@ -119,7 +119,7 @@ function providerTestOptimize() {
    *
    * @dataProvider providerTestOptimize
    */
-  function testOptimize($js_asset, $expected) {
+  public function testOptimize($js_asset, $expected) {
     $this->assertEquals($expected, $this->optimizer->optimize($js_asset));
   }
 
diff --git a/core/tests/Drupal/Tests/Core/Cache/NullBackendTest.php b/core/tests/Drupal/Tests/Core/Cache/NullBackendTest.php
index cd2481748e8f054c1fcac6a875347672055645a1..bf79f70903db368efd7bc8829326ba86324fde3f 100644
--- a/core/tests/Drupal/Tests/Core/Cache/NullBackendTest.php
+++ b/core/tests/Drupal/Tests/Core/Cache/NullBackendTest.php
@@ -15,7 +15,7 @@ class NullBackendTest extends UnitTestCase {
   /**
    * Tests that the NullBackend does not actually store variables.
    */
-  function testNullBackend() {
+  public function testNullBackend() {
     $null_cache = new NullBackend('test');
 
     $key = $this->randomMachineName();
diff --git a/core/tests/Drupal/Tests/Core/Common/AttributesTest.php b/core/tests/Drupal/Tests/Core/Common/AttributesTest.php
index 1f7d9c8014d1b2b25447c02d06217d8e9e2e7f24..d06c678bcd4366a62afcb0ef599acd05cc045056 100644
--- a/core/tests/Drupal/Tests/Core/Common/AttributesTest.php
+++ b/core/tests/Drupal/Tests/Core/Common/AttributesTest.php
@@ -52,7 +52,7 @@ public function providerTestAttributeData() {
    *
    * @dataProvider providerTestAttributeData
    */
-  function testDrupalAttributes($attributes, $expected, $message) {
+  public function testDrupalAttributes($attributes, $expected, $message) {
     $this->assertSame($expected, (string) new Attribute($attributes), $message);
   }
 
diff --git a/core/tests/Drupal/Tests/Core/Database/EmptyStatementTest.php b/core/tests/Drupal/Tests/Core/Database/EmptyStatementTest.php
index f40ebe80ac7ad9e5c8ce1a6594ca721fbcec7c5f..19548cd79df2eeb436673b14ed50ea09bb3a4ed9 100644
--- a/core/tests/Drupal/Tests/Core/Database/EmptyStatementTest.php
+++ b/core/tests/Drupal/Tests/Core/Database/EmptyStatementTest.php
@@ -15,7 +15,7 @@ class EmptyStatementTest extends UnitTestCase {
   /**
    * Tests that the empty result set behaves as empty.
    */
-  function testEmpty() {
+  public function testEmpty() {
     $result = new StatementEmpty();
 
     $this->assertTrue($result instanceof StatementInterface, 'Class implements expected interface');
@@ -25,7 +25,7 @@ function testEmpty() {
   /**
    * Tests that the empty result set iterates safely.
    */
-  function testEmptyIteration() {
+  public function testEmptyIteration() {
     $result = new StatementEmpty();
     $this->assertSame(0, iterator_count($result), 'Empty result set should not iterate.');
   }
@@ -33,7 +33,7 @@ function testEmptyIteration() {
   /**
    * Tests that the empty result set mass-fetches in an expected way.
    */
-  function testEmptyFetchAll() {
+  public function testEmptyFetchAll() {
     $result = new StatementEmpty();
 
     $this->assertEquals($result->fetchAll(), [], 'Empty array returned from empty result set.');
diff --git a/core/tests/Drupal/Tests/Core/Entity/EntityFieldManagerTest.php b/core/tests/Drupal/Tests/Core/Entity/EntityFieldManagerTest.php
index 9d4fc9504300dc7222da6d6e340a034c7ba186e9..19c5604adbed3533cd5dceb6551ff04bf6ae75a6 100644
--- a/core/tests/Drupal/Tests/Core/Entity/EntityFieldManagerTest.php
+++ b/core/tests/Drupal/Tests/Core/Entity/EntityFieldManagerTest.php
@@ -570,7 +570,7 @@ public function testClearCachedFieldDefinitions() {
   /**
    * @covers ::getExtraFields
    */
-  function testGetExtraFields() {
+  public function testGetExtraFields() {
     $this->setUpEntityTypeDefinitions();
 
     $entity_type_id = $this->randomMachineName();
diff --git a/core/tests/Drupal/Tests/Core/Entity/EntityUnitTest.php b/core/tests/Drupal/Tests/Core/Entity/EntityUnitTest.php
index 69791613a0163348a2fd6f3de486313a5c41024e..ad9e49c61675d236ace39748177cb80184cb16b6 100644
--- a/core/tests/Drupal/Tests/Core/Entity/EntityUnitTest.php
+++ b/core/tests/Drupal/Tests/Core/Entity/EntityUnitTest.php
@@ -235,7 +235,7 @@ public function testLanguage() {
   /**
    * Setup for the tests of the ::load() method.
    */
-  function setupTestLoad() {
+  public function setupTestLoad() {
     // Base our mocked entity on a real entity class so we can test if calling
     // Entity::load() on the base class will bubble up to an actual entity.
     $this->entityTypeId = 'entity_test_mul';
diff --git a/core/tests/Drupal/Tests/Core/Form/FormBuilderTest.php b/core/tests/Drupal/Tests/Core/Form/FormBuilderTest.php
index 0b6ccff6702845334699fa17e6a9aeedaba978c3..61591799ca8e19f47c7cec76815fe84a89c99554 100644
--- a/core/tests/Drupal/Tests/Core/Form/FormBuilderTest.php
+++ b/core/tests/Drupal/Tests/Core/Form/FormBuilderTest.php
@@ -886,7 +886,7 @@ public function testFormTokenCacheability($token, $is_authenticated, $expected_f
    *
    * @return array
    */
-  function providerTestFormTokenCacheability() {
+  public function providerTestFormTokenCacheability() {
     return [
       'token:none,authenticated:true' => [NULL, TRUE, ['contexts' => ['user.roles:authenticated']], ['max-age' => 0], 'post'],
       'token:none,authenticated:false' => [NULL, FALSE, ['contexts' => ['user.roles:authenticated']], NULL, 'post'],
diff --git a/core/tests/Drupal/Tests/Core/Form/FormHelperTest.php b/core/tests/Drupal/Tests/Core/Form/FormHelperTest.php
index f60b8e64c13c2121e59ae55f1ac373494b9abe24..556aab8f4c7281ce44c451e8f5c55b240309ef69 100644
--- a/core/tests/Drupal/Tests/Core/Form/FormHelperTest.php
+++ b/core/tests/Drupal/Tests/Core/Form/FormHelperTest.php
@@ -16,7 +16,7 @@ class FormHelperTest extends UnitTestCase {
    *
    * @covers ::rewriteStatesSelector
    */
-  function testRewriteStatesSelector() {
+  public function testRewriteStatesSelector() {
 
     // Simple selectors.
     $value = ['value' => 'medium'];
diff --git a/core/tests/Drupal/Tests/Core/Password/PasswordHashingTest.php b/core/tests/Drupal/Tests/Core/Password/PasswordHashingTest.php
index efb8cac8507bcc6dbac22eaaeb87487f5ae3c7b3..d237ffa159ebfa6c5862915f4286fd357a5cdc34 100644
--- a/core/tests/Drupal/Tests/Core/Password/PasswordHashingTest.php
+++ b/core/tests/Drupal/Tests/Core/Password/PasswordHashingTest.php
@@ -177,7 +177,7 @@ public function providerLongPasswords() {
  */
 class FakePhpassHashedPassword extends PhpassHashedPassword {
 
-  function __construct() {
+  public function __construct() {
     // Noop.
   }
 
diff --git a/core/tests/Drupal/Tests/Core/PathProcessor/PathProcessorTest.php b/core/tests/Drupal/Tests/Core/PathProcessor/PathProcessorTest.php
index f416570dd96a79d6624f01a0f7a0a16c330c9f59..9e3fcef51b2d86dc061631387cb48c13357bca0b 100644
--- a/core/tests/Drupal/Tests/Core/PathProcessor/PathProcessorTest.php
+++ b/core/tests/Drupal/Tests/Core/PathProcessor/PathProcessorTest.php
@@ -90,7 +90,7 @@ protected function setUp() {
   /**
    * Tests resolving the inbound path to the system path.
    */
-  function testProcessInbound() {
+  public function testProcessInbound() {
 
     // Create an alias manager stub.
     $alias_manager = $this->getMockBuilder('Drupal\Core\Path\AliasManager')
diff --git a/core/tests/Drupal/Tests/Core/Render/BubbleableMetadataTest.php b/core/tests/Drupal/Tests/Core/Render/BubbleableMetadataTest.php
index 69d59d71f09c11ef1982f5f0b2eeea40a5453f02..7188a51d132b78180b2c4ed1a619c7ff6b52e965 100644
--- a/core/tests/Drupal/Tests/Core/Render/BubbleableMetadataTest.php
+++ b/core/tests/Drupal/Tests/Core/Render/BubbleableMetadataTest.php
@@ -240,7 +240,7 @@ public function providerTestCreateFromRenderArray() {
    *
    * @covers ::mergeAttachments
    */
-  function testMergeAttachmentsLibraryMerging() {
+  public function testMergeAttachmentsLibraryMerging() {
     $a['#attached'] = [
       'library' => [
         'core/drupal',
@@ -391,7 +391,7 @@ function testMergeAttachmentsLibraryMerging() {
    *
    * @dataProvider providerTestMergeAttachmentsFeedMerging
    */
-  function testMergeAttachmentsFeedMerging($a, $b, $expected) {
+  public function testMergeAttachmentsFeedMerging($a, $b, $expected) {
     $this->assertSame($expected, BubbleableMetadata::mergeAttachments($a, $b));
   }
 
@@ -450,7 +450,7 @@ public function providerTestMergeAttachmentsFeedMerging() {
    *
    * @dataProvider providerTestMergeAttachmentsHtmlHeadMerging
    */
-  function testMergeAttachmentsHtmlHeadMerging($a, $b, $expected) {
+  public function testMergeAttachmentsHtmlHeadMerging($a, $b, $expected) {
     $this->assertSame($expected, BubbleableMetadata::mergeAttachments($a, $b));
   }
 
@@ -523,7 +523,7 @@ public function providerTestMergeAttachmentsHtmlHeadMerging() {
    *
    * @dataProvider providerTestMergeAttachmentsHtmlHeadLinkMerging
    */
-  function testMergeAttachmentsHtmlHeadLinkMerging($a, $b, $expected) {
+  public function testMergeAttachmentsHtmlHeadLinkMerging($a, $b, $expected) {
     $this->assertSame($expected, BubbleableMetadata::mergeAttachments($a, $b));
   }
 
@@ -589,7 +589,7 @@ public function providerTestMergeAttachmentsHtmlHeadLinkMerging() {
    *
    * @dataProvider providerTestMergeAttachmentsHttpHeaderMerging
    */
-  function testMergeAttachmentsHttpHeaderMerging($a, $b, $expected) {
+  public function testMergeAttachmentsHttpHeaderMerging($a, $b, $expected) {
     $this->assertSame($expected, BubbleableMetadata::mergeAttachments($a, $b));
   }