def setUp(self):
      self.api_client = APIClient()

def test_api_update(self):
      # Create an entry
      entry = self.Meta.factory.create()

      url = reverse(self.api_model_url + '-detail', args=[str(entry.id)])

      data = {'key': 'Modified Entry', 'comment': 'Modified Comment', 'position': 7}

      # Check that an entry cannot be altered by an unauthenticated user via the API
      response = self.api_client.put(url, data, format='json')
      contents = self.parse_json_response(response, Status.HTTP_403_FORBIDDEN)

      # Check that an entry cannot be altered by a normal authenticated user via the API
      self.api_client.login(username='normal-user', password='normal')
      response = self.api_client.put(url, data, format='json')
      contents = self.parse_json_response(response, Status.HTTP_403_FORBIDDEN)

      # Check that an entry can be altered by an administrator via the API
      self.api_client.login(username='admin-user', password='admin')
      response = self.api_client.put(url, data, format='json')
      contents = self.parse_json_response(response, Status.HTTP_201_CREATED)

class LookupFactory(factory.django.DjangoModelFactory):
       comment = factory.LazyAttribute(lambda x: faker.sentence(nb_words=10))
       position = factory.Sequence(lambda n: n)
       key = factory.Sequence(lambda n: 'Status {0:04d}'.format(n))

django.db.utils.IntegrityError: insert or update on table "reversion_version" violates foreign key constraint "reversion_version_content_type_id_fkey"
    DETAIL:  Key (content_type_id)=(855) is not present in table "django_content_type".