[issue9754] assertWarns and assertWarnsRegexp

[Florent Xicluna]

Florent Xicluna <florent.xicluna at gmail.com> added the comment:

> unittest should provide assertWarns and assertWarnsRegexp

+1
(the internal helpers in test.support could be refactored)

> The __warningregistry__ stuff looks horrible.

+1
(and it does not behave exactly the same in all Python versions)

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nosy: +flox

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<http://bugs.python.org/issue9754>
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