[issue18566] In unittest.TestCase docs for setUp() and tearDown() don't mention AssertionError

[Ezio Melotti]

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


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keywords: +easy
nosy: +ezio.melotti, michael.foord
stage:  -> needs patch

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<http://bugs.python.org/issue18566>
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