def test_get_serializer(self, mock_get_serializer_context, mock_get_serializer_data): form = SerializerFormBase() mock_serializer = mock.Mock() form._meta = mock.Mock(serializer=mock_serializer) actual = form.get_serializer() self.assertEqual(actual, mock_serializer.return_value) mock_serializer.assert_called_once_with( data=mock_get_serializer_data.return_value, context=mock_get_serializer_context.return_value, )