Автор: Thomas Rabaix (thomas.rabaix@sonata-project.org)
Наследование: implements Symfony\Component\Form\DataTransformerInterface
 public function testReverseTransform()
 {
     $delivery = new FreeDelivery(false);
     $delivery->setCode("deliveryCode");
     $pool = $this->getMockBuilder('Sonata\\Component\\Delivery\\Pool')->disableOriginalConstructor()->getMock();
     $pool->expects($this->once())->method('getMethod')->will($this->returnValue($delivery));
     $transformer = new DeliveryMethodTransformer($pool);
     $this->assertEquals($delivery, $transformer->reverseTransform("deliveryCode"));
 }