Автор: Bernhard Schussek (bernhard.schussek@symfony-project.com)
Автор: Florian Eckerstorfer (florian@eckerstorfer.org)
Наследование: extends Symfony\Component\Form\Configurable, implements Symfony\Component\Form\ValueTransformer\ValueTransformerInterface
 public function testReverseTransformExpectsValidDateString()
 {
     $reverseTransformer = new DateTimeToStringTransformer();
     $this->setExpectedException('\\InvalidArgumentException');
     $reverseTransformer->reverseTransform('2010-2010-2010', null);
 }