[issue14819] Add `assertIsSubclass` and `assertNotIsSubclass` to `unittest.TestCase`

[Ezio Melotti]

Ezio Melotti <ezio.melotti at gmail.com> added the comment:

I couldn't find any pointer to the discussion (maybe it happened on IRC), but the general goal is to provide only the most used/important assert methods and avoid bloating the API with less common ones.

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status: open -> pending

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue14819>
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