/**
  * @test
  */
 public function findAllReturnsSubTypesOfTheManagedType()
 {
     $this->superEntityRepository = $this->objectManager->get(Fixtures\SuperEntityRepository::class);
     $superEntity = new Fixtures\SuperEntity();
     $superEntity->setContent('this is the super entity');
     $this->superEntityRepository->add($superEntity);
     $subEntity = new Fixtures\SubEntity();
     $subEntity->setContent('this is the sub entity');
     $this->superEntityRepository->add($subEntity);
     $this->persistenceManager->persistAll();
     $this->assertEquals(2, $this->superEntityRepository->findAll()->count());
 }