Nette\Database\Connection::beginTransaction PHP Метод

    function beginTransaction()
    {
        $this->query('::beginTransaction');
    }

 /**
  * Setup database
  */
 protected function setUp()
 {
     parent::setUp();
     \Tester\Helpers::lock('db', dirname(TEMP_DIR));
     $this->connection = $this->getConnection();
     $this->selectionFactory = $this->getSelectionFactory();
     $this->connection->beginTransaction();
     $this->emptyDatabase();
     $this->createDatabase();
     $this->connection->commit();
 }