I have a line of code that is:
if not hasattr(class.a, u'c'): return How do I mock out class so that class.a.c returns False for hasattr?
If I do this:
>>> from mock import MagicMock >>> mock_class = MagicMock(spec=[u'a']) >>> hasattr(mock_class, u'a') True >>> hasattr(mock_class, u'b') False >>> hasattr(mock_class.a, u'c') True Although I dont spec class.a.c, its being mocked!!!
Actually mock_class.a will create another MagicMock, which don't have a spec. The only way I can think of is to assign the attribute a of the mock_class with another MagicMock with spec, like this:
mock_class = MagicMock(spec=[u'a']) mock_class.a = MagicMock(spec=[u'a']) hasattr(mock_class.a, u'c') # returns False Also if you have some real objects you want to mock, there is a possibility to do some recursive autospecing.
You can delete the attribute, which will cause hasattr to return False.
From the Documentation:
>>> mock = MagicMock() >>> hasattr(mock, 'm') True >>> del mock.m >>> hasattr(mock, 'm') False >>> del mock.f >>> mock.f Traceback (most recent call last): ... AttributeError: f For your specific example, since mock_class.a is another Mock, you can do del mock_class.a.c.
