public function its_editAction_should_return_404_when_topic_not_found($request, $repository, $csrfTokenManagerAdapter)
{
$repository->findOneBy(array('id' => 1))->willReturn(null);
$csrfTokenManagerAdapter->isCsrfTokenValid('default', $this->token)->willReturn(true);
$response = $this->editAction($request, 1);
$response->getStatusCode()->shouldReturn(404);
$response->shouldBeAnInstanceOf('Symfony\\Component\\HttpFoundation\\JsonResponse');
}