Michał Bultrowicz added the comment:
I guess that it's worth noting that the same problem is being talked about in
an issue on the asynctest library:
https://github.com/Martiusweb/asynctest/issues/29
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nosy: +butla
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Michał Bultrowicz added the comment:
One more update - I had the problem, because I was using monkeypatch.setattr()
from Pytest, and assumed that it will work the same as patch(). This assumption
turned out to be wrong.
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Changes by Michał Bultrowicz <michal.bultrow...@gmail.com>:
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status: open -> closed
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Michał Bultrowicz added the comment:
Ok, I've checked again and now patching "file_writer.open" works. I have no
idea what I was doing wrong the last time I checked... So I guess I'll close
the issue.
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Michał Bultrowicz added the comment:
Then where it should be patched in? Can you give an example? From what I've
checked patching only works in __main__ and builtins.
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New submission from Michał Bultrowicz:
Documentation of mock_open doesn't say how to use it in real-life test
situations (when you're probably not mocking in __main__). I've spent some time
scratching my head and googling for the way to mock-out the "open" function,
want to spare ot
