[issue15836] unittest assertRaises should verify excClass is actually a BaseException class
Serhiy Storchaka
report at bugs.python.org
Tue May 19 11:14:28 CEST 2015
Serhiy Storchaka added the comment:
Core developers left a couple of notes and the patch itself is outdated. Here is updated patch that addresses all comments. It also extends the checking to assertRaisesRegex(), assertWarns() and assertWarnsRegex().
There is a risk to break existing incorrect tests if the argument is a tuple. They can be passed for now because caught exception or warning is found before incorrect value. For example:
with self.assertRaises((ValueError, None)):
int('a')
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Added file: http://bugs.python.org/file39426/issue15836_2.patch
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