How to mock a validation rule in laravel?

by giovanny.lueilwitz , in category: PHP Frameworks , a month ago

How to mock a validation rule in laravel?

Facebook Twitter LinkedIn Telegram Whatsapp

1 answer

Member

by darion , a month ago

@giovanny.lueilwitz 

To mock a validation rule in Laravel, you can use the Validation facade and the shouldReceive method provided by Mockery. Here is an example of how you can mock a validation rule:

  1. Install Mockery by running the following composer command:
1
composer require mockery/mockery --dev


  1. Create a test case where you will mock the validation rule. For example, create a ValidationTest class in the TestsUnit directory.
  2. In the test case, you can mock the validation rule using the following code:
 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
use Mockery;
use IlluminateSupportFacadesValidator;
use IlluminateValidationValidationException;

class ValidationTest extends TestCase
{
    public function testValidationRule()
    {
        // Create a mock validation rule
        Validator::shouldReceive('make')->once()
            ->andReturn(Mockery::mock([
                'fails' => true,
                'errors' => Mockery::mock([
                    'first' => 'The validation rule failed',
                ]),
            ]));

        // Use the mocked validation rule
        $validator = Validator::make([], [
            'field' => 'required',
        ]);

        try {
            $validator->validate();
        } catch (ValidationException $exception) {
            $this->assertEquals('The validation rule failed', $exception->validator->errors()->first('field'));
        }
    }
}


In this code snippet, we are creating a mock validation rule using Mockery, and then using it in a test case by invoking the validate method on the validator object. We then catch any ValidationException that is thrown and check if the validation error message matches the one we defined in the mock.


By following these steps, you can mock a validation rule in Laravel for testing purposes.