Django Rest Framework-测试中的AssertionError

Question

我对Django Rest Framework的测试有疑问。我有以下观点：

class AccountDetail(generics.RetrieveUpdateAPIView):
    model = Account
    serializer_class = AccountSerializer
    lookup_field = 'username'
    permission_classes = (permissions.AllowAny,)
    def get_queryset(self):
        return Account.objects.filter(username=self.kwargs.get('username'))

我的网址包括以下内容：

account_urls = patterns('',
    url(r'^/(?P<username>[0-9a-zA-Z_-]+)/$', AccountDetail.as_view(), name='account-detail'),
    url(r'^/$', AccountList.as_view(), name='account-list')
)

urlpatterns = patterns('',
    url(r'^api/v1/users', include(account_urls)),
)

当我使用可浏览的API时，一切正常，但是当我编写以下测试时，出现错误：

class TestAccoundDetail(APITestCase):
    def setUp(self):
        factory = APIRequestFactory()
        #set up normal user and token
        self.normal_user = Account.objects.create_user(email="user@example.com", username="useri", password="man")
        request = factory.post('/api/v1/auth/login/', {'email': 'user@example.com', 'password': 'man'})
        response = obtain_jwt_token(request)
        self.normal_token = response.data['token']

    def test_details(self):
        factory = APIRequestFactory()
        view = AccountDetail.as_view()

        #unauthenticated
        url = reverse('account-detail', kwargs={'username': 'useri'})
        request = factory.get(url)
        response = view(request)
        self.assertEqual(response.status_code, 200)

AssertionError：预期的视图AccountDetail将使用名为“ username”的URL关键字参数进行调用。修复您的URL conf，或.lookup_field在视图上正确设置属性。

URL看起来不错，并且lookup_field在那。我想念什么？

编辑

我改用了APIClient，它可以正常工作：

        client = APIClient()

        response = client.get('/api/v1/users/useri/')
        self.assertEqual(response.status_code, 200)

但是，我仍然不明白为什么我的原始测试不起作用。

Answer 1

RequestFactory 用于对视图进行单元测试。它确实绕过了中间件和 url 层。因此，您需要自己提供额外的参数，同时使用 ClientFactory urls.py 为您做这件事。

编辑：换句话说，

response = view(request)

应该

response = view(request, "useri")

Answer 2

扩展@linovias答案，关键是将额外的参数传递给您的视图

response = (view, username='useri')

全面测试

def test_details(self):
    factory = APIRequestFactory()
    view = AccountDetail.as_view()

    #unauthenticated
    url = reverse('account-detail', kwargs={'username': 'useri'})
    request = factory.get(url)

    response = view(request, username='useri')

    self.assertEqual(response.status_code, 200)