FOS\UserBundle\Tests\Validation\UserValidationTest::testBlankUsernameFail PHP Method

    public function testBlankUsernameFail()
    {
        $user = $this->getService('fos_user.user_manager')->createUser();
        $violations = $this->getService('validator')->validate($user, 'Registration');
        $this->assertTrue($this->hasViolationForPropertyPath($violations, 'username'));
    }