问如何在Django Rest框架中为视图集上的自定义操作编写测试

EN

class UserViewSet(viewsets.ModelViewSet):
    """
    A viewset that provides the standard actions
    """
    queryset = User.objects.all()
    serializer_class = UserSerializer

    @action(detail=True, methods=['post', 'put'])
    def set_password(self, request, pk=None):
        user = self.get_object()
        serializer = PasswordSerializer(data=request.data)
        if serializer.is_valid():
            user.set_password(serializer.data['password'])
            user.save()
            return Response({'status': 'password set'})
        else:
            return Response(serializer.errors,
                            status=status.HTTP_400_BAD_REQUEST)

def test_password_set(self):
    user = User.objects.create(name="Joe")
    factory = APIRequestFactory()
    request_url = f'users/{user.id}/set_password/'
    request = factory.post(request_url)

    view = UserViewSet.as_view({'put': 'update'})
    response = view(request)
    self.assertEqual(response.status_code, 200)

AssertionError: 405 != 200