[issue18622] reset_mock on mock created by mock_open causes infinite recursion

[Michael Foord]

Michael Foord added the comment:

The best way to solve this seems to be to track a set of visited ids (mocks we've reset) and not recurse into mocks we've already done. This is similar to the patch proposed on the google code issue - but not identical as that uses a list and has it as the default argument to reset_mock.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue18622>
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