function DatabaseConnectionTestCase::testConnectionRouting in Drupal 7

Test that connections return appropriate connection objects.

File

modules/simpletest/tests/database_test.test, line 191

Class

DatabaseConnectionTestCase

Test connection management.

Code

function testConnectionRouting() {

  // Clone the master credentials to a slave 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', 'slave', $connection_info['default']);
  $db1 = Database::getConnection('default', 'default');
  $db2 = Database::getConnection('slave', 'default');
  $this
    ->assertNotNull($db1, 'default connection is a real connection object.');
  $this
    ->assertNotNull($db2, 'slave connection is a real connection object.');
  $this
    ->assertNotIdentical($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('slave', 'default');
  $this
    ->assertIdentical($db1, $db1b, 'A second call to getConnection() returns the same object.');
  $this
    ->assertIdentical($db2, $db2b, 'A second call to getConnection() returns the same object.');

  // Try to open an unknown target.
  $unknown_target = $this
    ->randomName();
  $db3 = Database::getConnection($unknown_target, 'default');
  $this
    ->assertNotNull($db3, 'Opening an unknown target returns a real connection object.');
  $this
    ->assertIdentical($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');
  $this
    ->assertIdentical($db3, $db3b, 'A second call to getConnection() returns the same object.');
}