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GH-114610: Fix pathlib._abc.PurePathBase.with_suffix('.ext') handling of stems (#114613)

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Raise `ValueError` if `with_suffix('.ext')` is called on a path without a
stem. Paths may only have a non-empty suffix if they also have a non-empty
stem.

ABC-only bugfix; no effect on public classes.
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Barney Gale 2024-01-30 14:25:16 +00:00 • committed by GitHub
parent e21754d7f8
commit 809eed4805
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3 changed files with 7 additions and 12 deletions
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Lib/test/test_pathlib/test_pathlib_abc.py
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@ -977,9 +977,8 @@ class DummyPurePathTest(unittest.TestCase):
def test_with_suffix_empty(self):
P = self.cls
# Path doesn't have a "filename" component.
self.assertEqual(P('').with_suffix('.gz'), P('.gz'))
self.assertEqual(P('.').with_suffix('.gz'), P('..gz'))
self.assertEqual(P('/').with_suffix('.gz'), P('/.gz'))
self.assertRaises(ValueError, P('').with_suffix, '.gz')
self.assertRaises(ValueError, P('/').with_suffix, '.gz')
def test_with_suffix_seps(self):
P = self.cls