[docs] [issue22153] There is no standard TestCase.runTest implementation

[Ezio Melotti]

Changes by Ezio Melotti <ezio.melotti at gmail.com>:


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nosy: +rbcollins
stage:  -> patch review
versions: +Python 2.7

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue22153>
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