public function ConnectionTest::testConnectionRouting in Drupal 9

Same name and namespace in other branches

1. 8 core/tests/Drupal/KernelTests/Core/Database/ConnectionTest.php \Drupal\KernelTests\Core\Database\ConnectionTest::testConnectionRouting()
2. 10 core/tests/Drupal/KernelTests/Core/Database/ConnectionTest.php \Drupal\KernelTests\Core\Database\ConnectionTest::testConnectionRouting()

Tests that connections return appropriate connection objects.

File

core/tests/Drupal/KernelTests/Core/Database/ConnectionTest.php, line 21

Class

ConnectionTest

Tests of the core database system.

Namespace

Drupal\KernelTests\Core\Database

Code

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.
  $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.');
}