Django休息框架单元测试viewsets mixins

Question

我需要对Django REST框架mixin进行单元测试.所以我去做一个看起来像这样的测试:

class TestMyMixin(APITestCase):

    class DummyView(MyMixin,
        viewsets.ModelViewSet):
        queryset = MyModel.objects.all()
        serializer_class = MyModelSerializer

        #some properties omitted

    def setUp(self):
        self.view = self.DummyView.as_view(\
            actions={'get':'list'})

    def test_basic_query(self):
        instance = MyModel.objects.create(\
            **{'name':'alex'})
        request = APIRequestFactory().get(\
            '/fake-path?query=ale',
            content_type='application/json')
        response = self.view(request)
        self.assertEqual(\
            response.status_code,status.HTTP_200_OK)
        json_dict = json.loads(\
            response.content.decode('utf-8'))
        self.assertEqual(json_dict['name'],instance.name)

但是当我运行这个测试时,我确实得到了:

raise ContentNotRenderedError('The response content must be 'django.template.response.ContentNotRenderedError: The response content must be rendered before it can be accessed.

似乎django REST框架会有一些不同的单元测试方法viewsets,mixins并且views.
但我无法弄清楚我该怎么做.
官方文档页面建议使用真实的网址,但它更适合验收测试而不是单元测试.

Answer 1

出现此问题的原因是您的视图的响应未呈现,因此_is_renderedis False和ContentNotRenderedError异常被引发.

您可以在django.template.response源代码中查看原因和方式.

您可以通过.render()手动调用响应来解决该问题:

response = self.view(request)
self.assertEqual(response.status_code, status.HTTP_200_OK)

# Render the response manually
response.render()
json_dict = json.loads(response.content.decode('utf-8'))
self.assertEqual(json_dict['name'],instance.name)