function let(DefinitionInterface $definition, EntityManager $manager, ClassMetadata $metadata)
 {
     $entity = 'AcmeBundle:Test';
     $definition->getName()->willReturn('test');
     $definition->getEntityName()->willReturn($entity);
     $definition->getEntityManager()->willReturn($manager);
     $manager->getClassMetadata($entity)->willReturn($metadata);
     $metadata->getName()->willReturn($entity);
 }
 /**
  * @param object $object
  * @return mixed
  * @throws UnsupportedEntityException
  */
 public function getId(DefinitionInterface $definition, $object)
 {
     $metadata = $definition->getEntityManager()->getClassMetadata($definition->getEntityName());
     $identity = $metadata->getIdentifierValues($object);
     if (count($identity) !== 1) {
         throw new UnsupportedEntityException("Entity '{$metadata->getName()}' must have exactly one identifier column");
     }
     reset($identity);
     return current($identity);
 }