auth::attempt method not defined

Auth seems to have no method called attempt, here is my code, im using codeception unit test with cest:

    use Illuminate\Support\Facades\Session;
    use Illuminate\Support\Facades\Auth;
    use Illuminate\Routing\Controller;

    class ReportCest
    {
        protected $valid_email = 'email@gmail.com';
        protected $valid_password = 'pass';

        public function _before(UnitTester $I)
        {
            Auth::attempt(['email' => $this->valid_email, 'password' => $this->valid_password]);
        }

    }

In the Illuminate\Foundation\Auth\AuthenticatesAndRegistersUsers.php used:

$this->auth->attempt($credentials, $request->has('remember')

i wonder how could i implement it like this

via Chebli Mohamed