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<?php
namespace Drupal\KernelTests\Core\Database;
/**
* Tests SQL syntax interpretation.
*
* In order to ensure consistent SQL handling throughout Drupal
* across multiple kinds of database systems, we test that the
* database system interprets SQL syntax in an expected fashion.
*
* @group Database
*/
class BasicSyntaxTest extends DatabaseTestBase {
/**
Jennifer Hodgdon
committed
* Tests string concatenation.
*/
public function testConcatLiterals() {
$result = db_query('SELECT CONCAT(:a1, CONCAT(:a2, CONCAT(:a3, CONCAT(:a4, :a5))))', [
':a1' => 'This',
':a2' => ' ',
':a3' => 'is',
':a4' => ' a ',
':a5' => 'test.',
]);
Jennifer Hodgdon
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$this->assertIdentical($result->fetchField(), 'This is a test.', 'Basic CONCAT works.');
}
/**
Jennifer Hodgdon
committed
* Tests string concatenation with field values.
*/
public function testConcatFields() {
$result = db_query('SELECT CONCAT(:a1, CONCAT(name, CONCAT(:a2, CONCAT(age, :a3)))) FROM {test} WHERE age = :age', [
':a1' => 'The age of ',
':a2' => ' is ',
':a3' => '.',
':age' => 25,
]);
Jennifer Hodgdon
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$this->assertIdentical($result->fetchField(), 'The age of John is 25.', 'Field CONCAT works.');
}
/**
* Tests string concatenation with separator.
*/
public function testConcatWsLiterals() {
$result = db_query("SELECT CONCAT_WS(', ', :a1, NULL, :a2, :a3, :a4)", [
':a1' => 'Hello',
':a2' => NULL,
':a3' => '',
':a4' => 'world.',
]);
$this->assertIdentical($result->fetchField(), 'Hello, , world.');
}
/**
* Tests string concatenation with separator, with field values.
*/
public function testConcatWsFields() {
$result = db_query("SELECT CONCAT_WS('-', :a1, name, :a2, age) FROM {test} WHERE age = :age", [
':a1' => 'name',
':a2' => 'age',
':age' => 25,
]);
$this->assertIdentical($result->fetchField(), 'name-John-age-25');
}
/**
Jennifer Hodgdon
committed
* Tests escaping of LIKE wildcards.
*/
public function testLikeEscape() {
db_insert('test')
->fields([
'name' => 'Ring_',
])
->execute();
// Match both "Ringo" and "Ring_".
$num_matches = db_select('test', 't')
->condition('name', 'Ring_', 'LIKE')
->countQuery()
->execute()
->fetchField();
Jennifer Hodgdon
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$this->assertIdentical($num_matches, '2', 'Found 2 records.');
// Match only "Ring_" using a LIKE expression with no wildcards.
$num_matches = db_select('test', 't')
->condition('name', db_like('Ring_'), 'LIKE')
->countQuery()
->execute()
->fetchField();
Jennifer Hodgdon
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$this->assertIdentical($num_matches, '1', 'Found 1 record.');
}
/**
Jennifer Hodgdon
committed
* Tests a LIKE query containing a backslash.
*/
public function testLikeBackslash() {
db_insert('test')
->fields(['name'])
->values([
'name' => 'abcde\f',
])
->values([
'name' => 'abc%\_',
])
->execute();
// Match both rows using a LIKE expression with two wildcards and a verbatim
// backslash.
$num_matches = db_select('test', 't')
->condition('name', 'abc%\\\\_', 'LIKE')
->countQuery()
->execute()
->fetchField();
Jennifer Hodgdon
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$this->assertIdentical($num_matches, '2', 'Found 2 records.');
// Match only the former using a LIKE expression with no wildcards.
$num_matches = db_select('test', 't')
->condition('name', db_like('abc%\_'), 'LIKE')
->countQuery()
->execute()
->fetchField();
Jennifer Hodgdon
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$this->assertIdentical($num_matches, '1', 'Found 1 record.');
}
/**
* Tests \Drupal\Core\Database\Connection::getFullQualifiedTableName().
*/
public function testGetFullQualifiedTableName() {
$database = \Drupal::database();
$num_matches = $database->select($database->getFullQualifiedTableName('test'), 't')
->countQuery()
->execute()
->fetchField();
$this->assertIdentical($num_matches, '4', 'Found 4 records.');
}