public function testRelationRemove()
 {
     $eventManager = $this->getEventManagerWithListenerExpectations(array('prePersist' => 3, 'postPersist' => 3, 'preRelationCreate' => 1, 'postRelationCreate' => 1, 'preRelationRemove' => 1, 'postRelationRemove' => 1));
     $movie = new Entity\Movie();
     $movie->setTitle('Terminator');
     $actor = new Entity\Person();
     $actor->setFirstName('Arnold');
     $movie->addActor($actor);
     $this->em->setEventManager($eventManager);
     $this->em->persist($movie);
     $this->em->flush();
     $movie = $this->em->find(get_class($movie), $movie->getId());
     $actor = $movie->getActors()->first();
     $movie->removeActor($actor);
     $this->em->persist($movie);
     $this->em->flush();
 }