我正在尝试使用不同的工具进行模拟并找出最好的工具。我真的很喜欢 flexmock 的简单性,但我不知道如何模拟 datetime.datetime.now() 的行为。
如何在flexmock中模拟以下行为?
>>> from datetime import datetime
>>> mocker = Mocker()
>>> fake_datetime=mocker.replace(datetime)
>>> fake_datetime.now()
<mocker.Mock object at 0x027F1990>
>>> mocker.result(datetime(year=2012, month=12, day=12))
>>> mocker.replay()
>>> datetime.now()
datetime.datetime(2012, 12, 12, 0, 0)
当我在 flexmock 中尝试相同时:
>>> from datetime import datetime
>>> fake_datetime = flexmock(datetime)
Traceback (most recent call last):
File "C:\virtualenvs\webui\lib\site-packages\flexmock.py", line 1194, in flexmock
return _create_partial_mock(spec, **kwargs)
File "C:\virtualenvs\webui\lib\site-packages\flexmock.py", line 1013, in
_create_partial_mock
if (_attach_flexmock_methods(mock, Mock, obj_or_class) and
File "C:\virtualenvs\webui\lib\site-packages\flexmock.py", line 1030, in
_attach_flexmock_methods
'Python does not allow you to mock builtin objects or modules. '
'Python does not allow you to mock builtin objects or modules. '
MockBuiltinError: Python does not allow you to mock builtin objects or modules.
Consider wrapping it in a class you can mock instead
或者
>>>flexmock(datetime).should_receive('datetime.now').and_return(datetime.datetime(2012,12,10))
>>> datetime.datetime.now()
Traceback (most recent call last):
File "<console>", line 1, in <module>
AttributeError: 'function' object has no attribute 'now'