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bpo-31416: Fix assertion failures in case of a bad warnings.filters or warnings.defaultaction. (#3496)

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Patch by Oren Milman.
This commit is contained in:
Oren Milman 2017-09-12 00:18:09 +03:00 • committed by Serhiy Storchaka
parent 8239fd7046
commit 9d984fd2b0
3 changed files with 33 additions and 3 deletions
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15
Lib/test/test_warnings/__init__.py
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@ -805,6 +805,21 @@ class _WarningsTests(BaseTest, unittest.TestCase):
with self.assertRaises(TypeError):
wmod.warn_explicit('foo', Warning, 'bar', 1, registry=None)
@support.cpython_only
def test_issue31416(self):
# warn_explicit() shouldn't cause an assertion failure in case of a
# bad warnings.filters or warnings.defaultaction.
wmod = self.module
with original_warnings.catch_warnings(module=wmod):
wmod.filters = [(None, None, Warning, None, 0)]
with self.assertRaises(TypeError):
wmod.warn_explicit('foo', Warning, 'bar', 1)
wmod.filters = []
with support.swap_attr(wmod, 'defaultaction', None), \
self.assertRaises(TypeError):
wmod.warn_explicit('foo', Warning, 'bar', 1)
class WarningsDisplayTests(BaseTest):