Symfony2: Testing entity validation constraints

Question

Does anyone have a good way to unit test an entity\'s validation constraints in Symfony2?

Ideally I want to have access to the Dependency Injection Container within

Answer 1

I don't see a problem with the WebTestCase. If you don't want a client, don't create one ;) But using a possibly different service than your actual application will use, that's a potential pit fall. So personally, I've done like this:

class ProductServiceTest extends Symfony\Bundle\FrameworkBundle\Test\WebTestCase
{

    /**
     * Setup the kernel.
     *
     * @return null
     */
    public function setUp()
    {
        $kernel = self::getKernelClass();

        self::$kernel = new $kernel('dev', true);
        self::$kernel->boot();
    }

    public function testFoo(){
        $em = self::$kernel->getContainer()->get('doctrine.orm.entity_manager');
        $v  = self::$kernel->getContainer()->get('validator');

        // ...
    }

}

It's less DRY than Matt answer -- as you'll repeat the code (for each test class) and boot the kernel often (for each test method), but it's self-contained and require no extra dependencies, so it depends on your needs. Plus I got rid of the static require.

Also, you're sure to have the same services that your application is using -- not default or mock, as you boot the kernel in the environnement that you wish to test.