bpo-30812: Fix test_warnings, restore _showwarnmsg (#2504)
bpo-26568, bpo-30812: Fix test_showwarnmsg_missing(): restore the attribute after removing it.
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@ -727,10 +727,15 @@ class _WarningsTests(BaseTest, unittest.TestCase):
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text = 'del _showwarnmsg test'
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with original_warnings.catch_warnings(module=self.module):
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self.module.filterwarnings("always", category=UserWarning)
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del self.module._showwarnmsg
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with support.captured_output('stderr') as stream:
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self.module.warn(text)
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result = stream.getvalue()
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show = self.module._showwarnmsg
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try:
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del self.module._showwarnmsg
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with support.captured_output('stderr') as stream:
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self.module.warn(text)
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result = stream.getvalue()
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finally:
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self.module._showwarnmsg = show
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self.assertIn(text, result)
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def test_showwarning_not_callable(self):
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