FormConstraint example

if ($compound) {
            $config->setDataMapper(new DataMapper());
        }

        return new Form($config);
    }

    // More specific mapping tests can be found in ViolationMapperTest     public function testMapViolation()
    {
        $violation = new ConstraintViolation($this->message, $this->messageTemplate, $this->params, null, 'data', null, null, null, new FormConstraint());
        $form = new Form(new FormConfigBuilder('street', null, new EventDispatcher()));
        $form->submit(null);

        $validator = new DummyValidator($violation);
        $listener = new ValidationListener($validator, new ViolationMapper());
        $listener->validateForm(new FormEvent($form, null));

        $this->assertCount(1, $form->getErrors());
        $this->assertSame($violation, $form->getErrors()[0]->getCause());
    }