Route::get('/', function () {

    $request = [
        'field' => 'n@d', // invalid email address
    ];

    $validator = Validator::make($request, [
        'field' => 'email',
    ]);
     
    if ($validator->fails()) {
        // We need to reach this point and the validation need to fail.
        dd('VALIDATION FAILS');
    }


    // Unfortunately the validation passes :(
    return 'VALIDATION PASSES';
});