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<?php
namespace Drupal\Tests\rest\Functional;
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use Behat\Mink\Driver\BrowserKitDriver;
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use Drupal\Core\Url;
use Drupal\rest\RestResourceConfigInterface;
use Drupal\Tests\BrowserTestBase;
use Drupal\user\Entity\Role;
use Drupal\user\RoleInterface;
use GuzzleHttp\RequestOptions;
use Psr\Http\Message\ResponseInterface;
/**
* Subclass this for every REST resource, every format and every auth provider.
*
* For more guidance see
* \Drupal\Tests\rest\Functional\EntityResource\EntityResourceTestBase
* which has recommendations for testing the
* \Drupal\rest\Plugin\rest\resource\EntityResource REST resource for every
* format and every auth provider. It's a special case (because that single REST
* resource generates supports not just one thing, but many things — multiple
* entity types), but the same principles apply.
*/
abstract class ResourceTestBase extends BrowserTestBase {
/**
* The format to use in this test.
*
* A format is the combination of a certain normalizer and a certain
* serializer.
*
* @see https://www.drupal.org/developing/api/8/serialization
*
* (The default is 'json' because that doesn't depend on any module.)
*
* @var string
*/
protected static $format = 'json';
/**
* The MIME type that corresponds to $format.
*
* (Sadly this cannot be computed automatically yet.)
*
* @var string
*/
protected static $mimeType = 'application/json';
/**
* The authentication mechanism to use in this test.
*
* (The default is 'cookie' because that doesn't depend on any module.)
*
* @var string
*/
protected static $auth = FALSE;
/**
* The REST Resource Config entity ID under test (i.e. a resource type).
*
* The REST Resource plugin ID can be calculated from this.
*
* @var string
*
* @see \Drupal\rest\Entity\RestResourceConfig::__construct()
*/
protected static $resourceConfigId = NULL;
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/**
* The account to use for authentication, if any.
*
* @var null|\Drupal\Core\Session\AccountInterface
*/
protected $account = NULL;
/**
* The REST resource config entity storage.
*
* @var \Drupal\Core\Entity\EntityStorageInterface
*/
protected $resourceConfigStorage;
/**
* The serializer service.
*
* @var \Symfony\Component\Serializer\Serializer
*/
protected $serializer;
/**
* Modules to install.
*
* @var array
*/
public static $modules = ['rest'];
/**
* {@inheritdoc}
*/
public function setUp() {
parent::setUp();
$this->serializer = $this->container->get('serializer');
// Ensure the anonymous user role has no permissions at all.
$user_role = Role::load(RoleInterface::ANONYMOUS_ID);
foreach ($user_role->getPermissions() as $permission) {
$user_role->revokePermission($permission);
}
$user_role->save();
assert([] === $user_role->getPermissions(), 'The anonymous user role has no permissions at all.');
if (static::$auth !== FALSE) {
// Ensure the authenticated user role has no permissions at all.
$user_role = Role::load(RoleInterface::AUTHENTICATED_ID);
foreach ($user_role->getPermissions() as $permission) {
$user_role->revokePermission($permission);
}
$user_role->save();
assert([] === $user_role->getPermissions(), 'The authenticated user role has no permissions at all.');
// Create an account.
$this->account = $this->createUser();
}
else {
// Otherwise, also create an account, so that any test involving User
// entities will have the same user IDs regardless of authentication.
$this->createUser();
}
$this->resourceConfigStorage = $this->container->get('entity_type.manager')->getStorage('rest_resource_config');
// Ensure there's a clean slate: delete all REST resource config entities.
$this->resourceConfigStorage->delete($this->resourceConfigStorage->loadMultiple());
$this->refreshTestStateAfterRestConfigChange();
}
/**
* Provisions the REST resource under test.
*
* @param string[] $formats
* The allowed formats for this resource.
* @param string[] $authentication
* The allowed authentication providers for this resource.
*/
protected function provisionResource($formats = [], $authentication = [], array $methods = ['GET', 'POST', 'PATCH', 'DELETE']) {
$this->resourceConfigStorage->create([
'id' => static::$resourceConfigId,
'granularity' => RestResourceConfigInterface::RESOURCE_GRANULARITY,
'configuration' => [
'methods' => $methods,
'formats' => $formats,
'authentication' => $authentication,
],
'status' => TRUE,
])->save();
$this->refreshTestStateAfterRestConfigChange();
}
/**
* Refreshes the state of the tester to be in sync with the testee.
*
* Should be called after every change made to:
* - RestResourceConfig entities
* - the 'rest.settings' simple configuration
*/
protected function refreshTestStateAfterRestConfigChange() {
// Ensure that the cache tags invalidator has its internal values reset.
// Otherwise the http_response cache tag invalidation won't work.
$this->refreshVariables();
// Tests using this base class may trigger route rebuilds due to changes to
// RestResourceConfig entities or 'rest.settings'. Ensure the test generates
// routes using an up-to-date router.
\Drupal::service('router.builder')->rebuildIfNeeded();
}
/**
* Return the expected error message.
*
* @param string $method
* The HTTP method (GET, POST, PATCH, DELETE).
*
* @return string
*/
protected function getExpectedUnauthorizedAccessMessage($method) {
$resource_plugin_id = str_replace('.', ':', static::$resourceConfigId);
$permission = 'restful ' . strtolower($method) . ' ' . $resource_plugin_id;
return "The '$permission' permission is required.";
}
/**
* Sets up the necessary authorization.
*
* In case of a test verifying publicly accessible REST resources: grant
* permissions to the anonymous user role.
*
* In case of a test verifying behavior when using a particular authentication
* provider: create a user with a particular set of permissions.
*
* Because of the $method parameter, it's possible to first set up
* authentication for only GET, then add POST, et cetera. This then also
* allows for verifying a 403 in case of missing authorization.
*
* @param string $method
* The HTTP method for which to set up authentication.
*
* @see ::grantPermissionsToAnonymousRole()
* @see ::grantPermissionsToAuthenticatedRole()
*/
abstract protected function setUpAuthorization($method);
/**
* Verifies the error response in case of missing authentication.
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*
* @param string $method
* HTTP method.
* @param \Psr\Http\Message\ResponseInterface $response
* The response to assert.
*/
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abstract protected function assertResponseWhenMissingAuthentication($method, ResponseInterface $response);
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/**
* Asserts normalization-specific edge cases.
*
* (Should be called before sending a well-formed request.)
*
* @see \GuzzleHttp\ClientInterface::request()
*
* @param string $method
* HTTP method.
* @param \Drupal\Core\Url $url
* URL to request.
* @param array $request_options
* Request options to apply.
*/
abstract protected function assertNormalizationEdgeCases($method, Url $url, array $request_options);
/**
* Asserts authentication provider-specific edge cases.
*
* (Should be called before sending a well-formed request.)
*
* @see \GuzzleHttp\ClientInterface::request()
*
* @param string $method
* HTTP method.
* @param \Drupal\Core\Url $url
* URL to request.
* @param array $request_options
* Request options to apply.
*/
abstract protected function assertAuthenticationEdgeCases($method, Url $url, array $request_options);
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/**
* Returns the expected cacheability of an unauthorized access response.
*
* @return \Drupal\Core\Cache\RefinableCacheableDependencyInterface
* The expected cacheability.
*/
abstract protected function getExpectedUnauthorizedAccessCacheability();
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/**
* Initializes authentication.
*
* E.g. for cookie authentication, we first need to get a cookie.
*/
protected function initAuthentication() {}
/**
* Returns Guzzle request options for authentication.
*
* @param string $method
* The HTTP method for this authenticated request.
*
* @return array
* Guzzle request options to use for authentication.
*
* @see \GuzzleHttp\ClientInterface::request()
*/
protected function getAuthenticationRequestOptions($method) {
return [];
}
/**
* Grants permissions to the anonymous role.
*
* @param string[] $permissions
* Permissions to grant.
*/
protected function grantPermissionsToAnonymousRole(array $permissions) {
$this->grantPermissions(Role::load(RoleInterface::ANONYMOUS_ID), $permissions);
}
/**
* Grants permissions to the authenticated role.
*
* @param string[] $permissions
* Permissions to grant.
*/
protected function grantPermissionsToAuthenticatedRole(array $permissions) {
$this->grantPermissions(Role::load(RoleInterface::AUTHENTICATED_ID), $permissions);
}
/**
* Grants permissions to the tested role: anonymous or authenticated.
*
* @param string[] $permissions
* Permissions to grant.
*
* @see ::grantPermissionsToAuthenticatedRole()
* @see ::grantPermissionsToAnonymousRole()
*/
protected function grantPermissionsToTestedRole(array $permissions) {
if (static::$auth) {
$this->grantPermissionsToAuthenticatedRole($permissions);
}
else {
$this->grantPermissionsToAnonymousRole($permissions);
}
}
/**
* Performs a HTTP request. Wraps the Guzzle HTTP client.
*
* Why wrap the Guzzle HTTP client? Because we want to keep the actual test
* code as simple as possible, and hence not require them to specify the
* 'http_errors = FALSE' request option, nor do we want them to have to
* convert Drupal Url objects to strings.
*
* We also don't want to follow redirects automatically, to ensure these tests
* are able to detect when redirects are added or removed.
*
* @see \GuzzleHttp\ClientInterface::request()
*
* @param string $method
* HTTP method.
* @param \Drupal\Core\Url $url
* URL to request.
* @param array $request_options
* Request options to apply.
*
* @return \Psr\Http\Message\ResponseInterface
*/
protected function request($method, Url $url, array $request_options) {
$request_options[RequestOptions::HTTP_ERRORS] = FALSE;
$request_options[RequestOptions::ALLOW_REDIRECTS] = FALSE;
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$request_options = $this->decorateWithXdebugCookie($request_options);
$client = $this->getSession()->getDriver()->getClient()->getClient();
return $client->request($method, $url->setAbsolute(TRUE)->toString(), $request_options);
}
/**
* Asserts that a resource response has the given status code and body.
*
* @param int $expected_status_code
* The expected response status.
* @param string|false $expected_body
* The expected response body. FALSE in case this should not be asserted.
* @param \Psr\Http\Message\ResponseInterface $response
* The response to assert.
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* @param string[]|false $expected_cache_tags
* (optional) The expected cache tags in the X-Drupal-Cache-Tags response
* header, or FALSE if that header should be absent. Defaults to FALSE.
* @param string[]|false $expected_cache_contexts
* (optional) The expected cache contexts in the X-Drupal-Cache-Contexts
* response header, or FALSE if that header should be absent. Defaults to
* FALSE.
* @param string|false $expected_page_cache_header_value
* (optional) The expected X-Drupal-Cache response header value, or FALSE if
* that header should be absent. Possible strings: 'MISS', 'HIT'. Defaults
* to FALSE.
* @param string|false $expected_dynamic_page_cache_header_value
* (optional) The expected X-Drupal-Dynamic-Cache response header value, or
* FALSE if that header should be absent. Possible strings: 'MISS', 'HIT'.
* Defaults to FALSE.
*/
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protected function assertResourceResponse($expected_status_code, $expected_body, ResponseInterface $response, $expected_cache_tags = FALSE, $expected_cache_contexts = FALSE, $expected_page_cache_header_value = FALSE, $expected_dynamic_page_cache_header_value = FALSE) {
$this->assertSame($expected_status_code, $response->getStatusCode());
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if ($expected_status_code === 204) {
// DELETE responses should not include a Content-Type header. But Apache
// sets it to 'text/html' by default. We also cannot detect the presence
// of Apache either here in the CLI. For now having this documented here
// is all we can do.
// $this->assertSame(FALSE, $response->hasHeader('Content-Type'));
$this->assertSame('', (string) $response->getBody());
}
else {
$this->assertSame([static::$mimeType], $response->getHeader('Content-Type'));
if ($expected_body !== FALSE) {
$this->assertSame($expected_body, (string) $response->getBody());
}
}
// Expected cache tags: X-Drupal-Cache-Tags header.
$this->assertSame($expected_cache_tags !== FALSE, $response->hasHeader('X-Drupal-Cache-Tags'));
if (is_array($expected_cache_tags)) {
$this->assertSame($expected_cache_tags, explode(' ', $response->getHeader('X-Drupal-Cache-Tags')[0]));
}
// Expected cache contexts: X-Drupal-Cache-Contexts header.
$this->assertSame($expected_cache_contexts !== FALSE, $response->hasHeader('X-Drupal-Cache-Contexts'));
if (is_array($expected_cache_contexts)) {
$this->assertSame($expected_cache_contexts, explode(' ', $response->getHeader('X-Drupal-Cache-Contexts')[0]));
}
// Expected Page Cache header value: X-Drupal-Cache header.
if ($expected_page_cache_header_value !== FALSE) {
$this->assertTrue($response->hasHeader('X-Drupal-Cache'));
$this->assertSame($expected_page_cache_header_value, $response->getHeader('X-Drupal-Cache')[0]);
}
else {
$this->assertFalse($response->hasHeader('X-Drupal-Cache'));
}
// Expected Dynamic Page Cache header value: X-Drupal-Dynamic-Cache header.
if ($expected_dynamic_page_cache_header_value !== FALSE) {
$this->assertTrue($response->hasHeader('X-Drupal-Dynamic-Cache'));
$this->assertSame($expected_dynamic_page_cache_header_value, $response->getHeader('X-Drupal-Dynamic-Cache')[0]);
}
else {
$this->assertFalse($response->hasHeader('X-Drupal-Dynamic-Cache'));
}
}
/**
* Asserts that a resource error response has the given message.
*
* @param int $expected_status_code
* The expected response status.
* @param string $expected_message
* The expected error message.
* @param \Psr\Http\Message\ResponseInterface $response
* The error response to assert.
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* @param string[]|false $expected_cache_tags
* (optional) The expected cache tags in the X-Drupal-Cache-Tags response
* header, or FALSE if that header should be absent. Defaults to FALSE.
* @param string[]|false $expected_cache_contexts
* (optional) The expected cache contexts in the X-Drupal-Cache-Contexts
* response header, or FALSE if that header should be absent. Defaults to
* FALSE.
* @param string|false $expected_page_cache_header_value
* (optional) The expected X-Drupal-Cache response header value, or FALSE if
* that header should be absent. Possible strings: 'MISS', 'HIT'. Defaults
* to FALSE.
* @param string|false $expected_dynamic_page_cache_header_value
* (optional) The expected X-Drupal-Dynamic-Cache response header value, or
* FALSE if that header should be absent. Possible strings: 'MISS', 'HIT'.
* Defaults to FALSE.
*/
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protected function assertResourceErrorResponse($expected_status_code, $expected_message, ResponseInterface $response, $expected_cache_tags = FALSE, $expected_cache_contexts = FALSE, $expected_page_cache_header_value = FALSE, $expected_dynamic_page_cache_header_value = FALSE) {
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$expected_body = ($expected_message !== FALSE) ? $this->serializer->encode(['message' => $expected_message], static::$format) : FALSE;
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$this->assertResourceResponse($expected_status_code, $expected_body, $response, $expected_cache_tags, $expected_cache_contexts, $expected_page_cache_header_value, $expected_dynamic_page_cache_header_value);
}
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/**
* Adds the Xdebug cookie to the request options.
*
* @param array $request_options
* The request options.
*
* @return array
* Request options updated with the Xdebug cookie if present.
*/
protected function decorateWithXdebugCookie(array $request_options) {
$session = $this->getSession();
$driver = $session->getDriver();
if ($driver instanceof BrowserKitDriver) {
$client = $driver->getClient();
foreach ($client->getCookieJar()->all() as $cookie) {
if (isset($request_options[RequestOptions::HEADERS]['Cookie'])) {
$request_options[RequestOptions::HEADERS]['Cookie'] .= '; ' . $cookie->getName() . '=' . $cookie->getValue();
}
else {
$request_options[RequestOptions::HEADERS]['Cookie'] = $cookie->getName() . '=' . $cookie->getValue();
}
}
}
return $request_options;
}
/**
* Recursively sorts an array by key.
*
* @param array $array
* An array to sort.
*
* @return array
* The sorted array.
*/
protected static function recursiveKSort(array &$array) {
// First, sort the main array.
ksort($array);
// Then check for child arrays.
foreach ($array as $key => &$value) {
if (is_array($value)) {
static::recursiveKSort($value);
}
}
}