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gh-104089: catch DeprecationWarning in test_fstring (#104137)

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Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com>
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sunmy2019 2023-05-04 18:20:20 +08:00 • committed by GitHub
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1 changed files with 12 additions and 5 deletions
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17
Lib/test/test_fstring.py
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@ -980,11 +980,18 @@ x = (
self.assertEqual(fr'\"\'\"\'', '\\"\\\'\\"\\\'')
def test_fstring_backslash_before_double_bracket(self):
self.assertEqual(f'\{{\}}', '\\{\\}')
self.assertEqual(f'\{{', '\\{')
self.assertEqual(f'\{{{1+1}', '\\{2')
self.assertEqual(f'\}}{1+1}', '\\}2')
self.assertEqual(f'{1+1}\}}', '2\\}')
deprecated_cases = [
(r"f'\{{\}}'", '\\{\\}'),
(r"f'\{{'", '\\{'),
(r"f'\{{{1+1}'", '\\{2'),
(r"f'\}}{1+1}'", '\\}2'),
(r"f'{1+1}\}}'", '2\\}')
]
for case, expected_result in deprecated_cases:
with self.subTest(case=case, expected_result=expected_result):
with self.assertWarns(DeprecationWarning):
result = eval(case)
self.assertEqual(result, expected_result)
self.assertEqual(fr'\{{\}}', '\\{\\}')
self.assertEqual(fr'\{{', '\\{')
self.assertEqual(fr'\{{{1+1}', '\\{2')