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gh-128438: Use EnvironmentVarGuard for test_{builtin,io,locale}.py (#128476)

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Modifying locale-related environment variables in `Lib/test/test_builtin.py`,
`Lib/test/test_io.py` and `Lib/test/test_locale.py` is now achieved by using
an `EnvironmentVarGuard` context instead of an explicit `try-finally` block.
This commit is contained in:
Yan Yanchii 2025-01-15 10:38:43 +01:00 • committed by GitHub
parent 6e4f64109b
commit ae7f621c33
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3 changed files with 11 additions and 30 deletions
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9
Lib/test/test_builtin.py
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@ -1567,14 +1567,12 @@ class BuiltinTest(ComplexesAreIdenticalMixin, unittest.TestCase):
@unittest.skipIf(sys.flags.utf8_mode, "utf-8 mode is enabled")
def test_open_default_encoding(self):
old_environ = dict(os.environ)
try:
with EnvironmentVarGuard() as env:
# try to get a user preferred encoding different than the current
# locale encoding to check that open() uses the current locale
# encoding and not the user preferred encoding
for key in ('LC_ALL', 'LANG', 'LC_CTYPE'):
if key in os.environ:
del os.environ[key]
env.unset(key)
self.write_testfile()
current_locale_encoding = locale.getencoding()
@ -1583,9 +1581,6 @@ class BuiltinTest(ComplexesAreIdenticalMixin, unittest.TestCase):
fp = open(TESTFN, 'w')
with fp:
self.assertEqual(fp.encoding, current_locale_encoding)
finally:
os.environ.clear()
os.environ.update(old_environ)
@support.requires_subprocess()
def test_open_non_inheritable(self):