def test_serialization_when_content_object_deleted(self):
mention_notification = NotificationType.objects.get(slug="mention")
content_type = ContentType.objects.get_for_model(Post)
user = UserFactory()
post = PostFactory(user=user)
Notification.objects.create(notification_type=mention_notification, content_type=content_type,
object_id=post.pk, user=user, reporter=self.reporter)
post.delete()
other_post = PostFactory(user=user)
Notification.objects.create(notification_type=mention_notification, content_type=content_type,
object_id=other_post.pk, user=user, reporter=self.reporter)
url = reverse("notifications")
response = self.assertSchemaGet(url, None, "$notificationResponse", user)
self.assertEqual(response.data['count'], 1)
self.assertEqual(response.data['results'][0]['post']['id'], other_post.pk)
