How to test custom validation rules in Laravel 5?

Hi!

I also posted this question at StackOverflow.

I created a custom validation rule in Laravel, extending it in the register() method of a service provider, and I'd like to test it, but don't know how.

I took a look at Laravel framework's validation tests, but I couldn't understand the purpose of the getTranslator() and getRealTranslator() methods.

Could someone give me a hint on how to test Laravel's custom validation rules?

That's what I did:

Created a ValidatorServiceProvider as follows:

<?php namespace App\Providers;

use Illuminate\Support\ServiceProvider;

class ValidatorServiceProvider extends ServiceProvider {

    /**
    * Bootstrap the application services.
    *
    * @return void
    */
    public function boot()
    {
        $this->app['validator']->extend('greater_than', function($attr, $val, $params)
        {
            return false;
        });
    }

    /**
     * Register the application services.
     *
     * @return void
     */
    public function register()
    {
    }
}

Also added it to the providers array and issued composer dump-autoload -o.

Added the following to tests\CustomValidationRulesTest.php:

<?php

use Mockery as m;
use Illuminate\Validation\Validator;

class CustomValidationRulesTest extends TestCase {
    
    public function tearDown()
    {
        m::close();
    }

    public function testValidateGreaterThan()
    {
        $trans = $this->getTranslator();
        
        $rules = [
            'field2' => 'greater_than:field1'
        ];
        
        $data = [
            'field1' => 1,
            'field2' => 2
        ];
        
        $v = new Validator($trans, $data, $rules);
        $this->assertTrue($v->passes());
    }
    
    protected function getTranslator()
    {
        return m::mock('Symfony\Component\Translation\TranslatorInterface');
    }
    
    protected function getRealTranslator()
    {
        $trans = new Symfony\Component\Translation\Translator('en', new Symfony\Component\Translation\MessageSelector);
        $trans->addLoader('array', new Symfony\Component\Translation\Loader\ArrayLoader);
        return $trans;
    }

}

Running PHPUnit gives me the following:

PHPUnit 4.6.6 by Sebastian Bergmann and contributors.

Configuration read from /home/ubuntu/workspace/phpunit.xml

E.

Time: 248 ms, Memory: 14.75Mb

There was 1 error:

1) CustomValidationRulesTest::testValidateGreaterThan
BadMethodCallException: Method [validateGreaterThan] does not exist.

/home/ubuntu/workspace/vendor/laravel/framework/src/Illuminate/Validation/Validator.php:2615
/home/ubuntu/workspace/vendor/laravel/framework/src/Illuminate/Validation/Validator.php:372
/home/ubuntu/workspace/vendor/laravel/framework/src/Illuminate/Validation/Validator.php:372
/home/ubuntu/workspace/vendor/laravel/framework/src/Illuminate/Validation/Validator.php:325
/home/ubuntu/workspace/tests/CustomValidationRulesTest.php:27

What I'm doing wrong?

Thanks!