function ConnectionTest::testConnectionRouting

Tests that connections return appropriate connection objects.

File

core/tests/Drupal/KernelTests/Core/Database/ConnectionTest.php, line 20

Class

ConnectionTest

Tests of the core database system.

Namespace

Code

public function testConnectionRouting() : void {
    // 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.
    $connection_info = Database::getConnectionInfo('default');
    Database::addConnectionInfo('default', 'replica', $connection_info['default']);
    $db1 = Database::getConnection('default', 'default');
    $db2 = Database::getConnection('replica', 'default');
    $this->assertNotNull($db1, 'default connection is a real connection object.');
    $this->assertNotNull($db2, 'replica connection is a real connection object.');
    $this->assertNotSame($db1, $db2, 'Each target refers to a different connection.');
    // Try to open those targets another time, that should return the same objects.
    $db1b = Database::getConnection('default', 'default');
    $db2b = Database::getConnection('replica', 'default');
    $this->assertSame($db1, $db1b, 'A second call to getConnection() returns the same object.');
    $this->assertSame($db2, $db2b, 'A second call to getConnection() returns the same object.');
    // Try to open an unknown target.
    $unknown_target = $this->randomMachineName();
    $db3 = Database::getConnection($unknown_target, 'default');
    $this->assertNotNull($db3, 'Opening an unknown target returns a real connection object.');
    $this->assertSame($db1, $db3, 'An unknown target opens the default connection.');
    // Try to open that unknown target another time, that should return the same object.
    $db3b = Database::getConnection($unknown_target, 'default');
    $this->assertSame($db3, $db3b, 'A second call to getConnection() returns the same object.');
}