python - 如何在 Django 测试中使用 AssertRaisesMessage()

Question

我关注了 Django doc使用 assertRaisesMessage() 编写测试，但问题是在执行测试时会引发异常本身(因此，不会执行测试)。请注意，调用的异常是我在模型的方法中(不在 View 中)自愿引发的异常。

class MyTestCase(TestCase):
    def test_invertRewardState_view_fails_notmy_reward(self):
        self.client.login(email='gislaine@toto.com', password='azerty')
        resp = self.client.get(reverse(invertRewardState, args=(1,)))
        self.assertRaisesMessage(
            expected_exception=Exception,
            expected_message=EXC_NOT_YOURS,
            callable_obj=resp)

我应该如何使用 AssertRaisesMessage() 让我的测试在不引发异常的情况下执行？谢谢。

编辑:在尝试了 faltru 1st 解决方案后，问题仍然存在。一旦我的测试进入 resp = ... 部分，就会调用 View ，然后调用相关的模型方法并引发异常。完整的堆栈跟踪:

Traceback (most recent call last):
  File "/Users/walt/Code/hellodjango/clientizr/tests.py", line 338, in test_invertRewardState_view_fails_notmy_reward
    resp = self.client.get(reverse(invertRewardState, args=('1',)))
  File "/Users/walt/Code/hellodjango/venv/lib/python2.7/site-packages/django/test/client.py", line 473, in get
    response = super(Client, self).get(path, data=data, **extra)
  File "/Users/walt/Code/hellodjango/venv/lib/python2.7/site-packages/django/test/client.py", line 280, in get
    return self.request(**r)
  File "/Users/walt/Code/hellodjango/venv/lib/python2.7/site-packages/django/test/client.py", line 444, in request
    six.reraise(*exc_info)
  File "/Users/walt/Code/hellodjango/venv/lib/python2.7/site-packages/django/core/handlers/base.py", line 114, in get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/Users/walt/Code/hellodjango/venv/lib/python2.7/site-packages/django/contrib/auth/decorators.py", line 22, in _wrapped_view
    return view_func(request, *args, **kwargs)
  File "/Users/walt/Code/hellodjango/clientizr/views.py", line 234, in invertRewardState
    reward.invert_reward_state(request.user)
  File "/Users/walt/Code/hellodjango/clientizr/models.py", line 606, in invert_reward_state
    self.throw_error_if_not_owner_reward(cur_user)
  File "/Users/walt/Code/hellodjango/clientizr/models.py", line 587, in throw_error_if_not_owner_reward
    raise Exception(EXC_NOT_YOURS)
Exception: Cet objet n'est pas le v\xf4tre

Answer 1

您使用 assertRaisesMessage 作为您预计会失败的代码的上下文管理器:

class MyTestCase(TestCase):
    def test_invertRewardState_view_fails_notmy_reward(self):
        self.client.login(email='gislaine@toto.com', password='azerty')
        url = reverse(invertRewardState, args=(1,))
        with self.assertRaisesMessage(Exception, EXC_NOT_YOURS):
            self.client.get(url)