Django测试在响应状态代码404上引发错误

如何解决Django测试在响应状态代码404上引发错误

我正在跟着有关django测试的讲座，这是测试之一：

    def test_invalid_flight_page(self):
        max_id = Flight.objects.all().aggregate(Max("id"))["id__max"]

        c = Client()
        response = c.get(f"/flights/{max_id + 1}")
        self.assertEqual(response.status_code,404)

当我运行manage.py测试时，它将在此测试上引发错误，实质上是说没有匹配的排期：

Creating test database for alias 'default'...
System check identified no issues (0 silenced).
.......E..
======================================================================
ERROR: test_invalid_flight_page (flights.tests.FlightTestCase)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "C:\Users\sarah\Desktop\airline\flights\tests.py",line 68,in test_invalid_flight_page
    response = c.get(f"/flights/{max_id + 1}")
  File "C:\Python\Python385\lib\site-packages\django\test\client.py",line 732,in get
    response = super().get(path,data=data,secure=secure,**extra)
  File "C:\Python\Python385\lib\site-packages\django\test\client.py",line 393,in get
    return self.generic('GET',path,**{
  File "C:\Python\Python385\lib\site-packages\django\test\client.py",line 470,in generic
    return self.request(**r)
  File "C:\Python\Python385\lib\site-packages\django\test\client.py",line 709,in request
    self.check_exception(response)
  File "C:\Python\Python385\lib\site-packages\django\test\client.py",line 571,in check_exception
    raise exc_value
  File "C:\Python\Python385\lib\site-packages\django\core\handlers\exception.py",line 47,in inner
    response = get_response(request)
  File "C:\Python\Python385\lib\site-packages\django\core\handlers\base.py",line 179,in _get_response
    response = wrapped_callback(request,*callback_args,**callback_kwargs)
  File "C:\Users\sarah\Desktop\airline\flights\views.py",line 21,in flight
    flight = Flight.objects.get(pk=flight_id)
  File "C:\Python\Python385\lib\site-packages\django\db\models\manager.py",line 85,in manager_method
    return getattr(self.get_queryset(),name)(*args,**kwargs)
  File "C:\Python\Python385\lib\site-packages\django\db\models\query.py",line 429,in get
    raise self.model.DoesNotExist(
flights.models.Flight.DoesNotExist: Flight matching query does not exist.

----------------------------------------------------------------------
Ran 10 tests in 0.120s

FAILED (errors=1)
Destroying test database for alias 'default'...

但这就是要点，没有具有该ID的航班，因此该请求的响应状态代码应等于404。据我所知，我已经从讲座中准确地复制了该代码，但讲师的测试正在运行好的。谁能看到我可能想念的东西？

当我将期望的response.status_code更改为200 self.assertEqual(response.status_code,200)时，它给了我同样的错误，因此这向我表明主要问题在于响应线吗？ 请让我知道是否还有其他需要查看的内容。

解决方法

查询解析为空时，您的视图类未处理。在django中，操作如下：

try:
    result = SomeModel.objects.get(pk=some_id)
except SomeModel.DoesNotExist:
    # Return 404 here