Codeception\Module\WPDb::initialize_driver PHP Method

    protected function initialize_driver()
    {
        try {
            $this->driver = Driver::create($this->config['dsn'], $this->config['user'], $this->config['password']);
        } catch (\PDOException $e) {
            throw new ModuleConfigException(__CLASS__, $e->getMessage() . ' while creating PDO connection');
        }
    }