[英]Exception not called when using side_effect with mock
I have a function in a class called "my_class" in a module called "my_module" that contains this snippet: 我在名为“my_module”的模块中有一个名为“my_class”的类中的函数,该模块包含以下代码段:
try:
response = self.make_request_response(requests.post, data, endpoint_path)
except requests.exceptions.HTTPError as err:
if err.response.status_code == requests.codes.conflict:
logging.info('Conflict error')
And I'm trying to test it like so: 而我正试图像这样测试它:
error = requests.exceptions.HTTPError(mock.Mock(response=mock.Mock(status_code=409)), 'not found')
mock_bad = mock.Mock(side_effect=error)
mock_good = mock.Mock()
mock_good.return_value = [{'name': 'foo', 'id': 1}]
upsert = my_module.my_class(some_data)
with mock.patch.object(upsert, 'make_request_response', side_effect=[mock_bad, mock_good]) as mock_response:
some_function()
What I would expect is for an HTTPError to be raised in the test after I patch it. 我期望的是在我修补它之后在测试中引发HTTPError。 However, when I run the test, an exception is never raised. 但是,当我运行测试时,永远不会引发异常。 "response" is actually set to mock_bad, which contains the desired exception, although it's never raised. “response”实际上设置为mock_bad,它包含所需的异常,尽管它从未被引发过。 Any idea where I'm going wrong here? 知道我哪里错了吗?
You put your exception into the wrong side effect. 你把你的例外置于错误的副作用。 Calling make_request_response()
now first returns the mock_bad
mock, which by itself won't raise that exception until called. 现在调用make_request_response()
首先返回mock_bad
模拟,它在调用之前不会引发该异常。
Put the exception in the mock.patch.object()
side_effect
list: 将异常放在mock.patch.object()
side_effect
列表中:
error = requests.exceptions.HTTPError(mock.Mock(response=mock.Mock(status_code=409)), 'not found')
mock_good = mock.Mock()
mock_good.return_value = [{'name': 'foo', 'id': 1}]
upsert = my_module.my_class(some_data)
with mock.patch.object(upsert, 'make_request_response', side_effect=[error, mock_good]) as mock_response:
some_function()
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