public function testAnnotationValidation()
{
$app = new Application();
$this->assertTrue($app->offsetExists('validator'));
$validator = $app['validator'];
$this->assertInstanceOf('Symfony\\Component\\Validator\\ValidatorInterface', $validator);
$validUser = new User();
$validUser->setUsername('valid_username');
$validUser->setEmail('*****@*****.**');
$validUser->setPlainPassword('Password123.');
$validUser->setBirthDate(new \DateTime('-20 YEARS'));
$violations = $validator->validate($validUser);
$this->assertEquals(0, $violations->count());
$invalidUser = new User();
$invalidUser->setEmail('INVALID_EMAIL_ADDRESS');
$violations = $validator->validate($invalidUser);
$this->assertGreaterThan(0, $violations->count());
}
