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gh-134565: Use ExceptionGroup to handle multiple errors in unittest.doModuleCleanups()#134566

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serhiy-storchaka
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@serhiy-storchakaserhiy-storchaka commentedMay 23, 2025
edited by bedevere-appbot
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@serhiy-storchakaserhiy-storchaka changed the titlegh-134565: Use ExceptionGroup to handle multiple errors in unittest.doModuleCleanup()gh-134565: Use ExceptionGroup to handle multiple errors in unittest.doModuleCleanups()May 23, 2025
@iritkatriel
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This looks like an API breaking change, it could break people's tests.

e = e.exceptions[0]
self.assertEqual(str(e), 'CleanUpExc (2 sub-exceptions)')
self.assertEqual(str(e.exceptions[0]), 'CleanUpExc1')
self.assertEqual(str(e.exceptions[1]), 'CleanUpExc2')
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We have a utility for this check:
Lib/test/support/testcase.py: def assertExceptionIsLike(self, exc, template):

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Done.

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Normally exceptions are not raised in test cleanup code, so I do not think this change will break people's tests. It will change the error report to better if there were multiple errors.

e = e.exceptions[0]
self.assertEqual(str(e), 'CleanUpExc (2 sub-exceptions)')
self.assertEqual(str(e.exceptions[0]), 'CleanUpExc1')
self.assertEqual(str(e.exceptions[1]), 'CleanUpExc2')
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Done.

@serhiy-storchaka
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Thank you for your review@iritkatriel.

@serhiy-storchakaserhiy-storchaka merged commit393773a intopython:mainMay 23, 2025
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@serhiy-storchakaserhiy-storchaka deleted the unittest-doModuleCleanups-multiple-errors branchMay 23, 2025 18:07
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@iritkatrieliritkatrieliritkatriel approved these changes

@1st11st1Awaiting requested review from 1st1

@gvanrossumgvanrossumAwaiting requested review from gvanrossum

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@serhiy-storchaka@iritkatriel

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