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bpo-46659: Fix the MBCS codec alias on Windows (GH-31218)

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Victor Stinner 2022-02-22 22:04:07 +01:00 • committed by GitHub
parent 8fb94893e4
commit ccbe8045fa
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2 changed files with 17 additions and 11 deletions
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17
Lib/test/test_codecs.py
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@ -3191,13 +3191,16 @@ class CodePageTest(unittest.TestCase):
self.assertEqual(decoded, ('abc', 3))
def test_mbcs_alias(self):
# On Windows, the encoding name must be the ANSI code page
encoding = locale.getpreferredencoding(False)
self.assertTrue(encoding.startswith('cp'), encoding)
# The encodings module create a "mbcs" alias to the ANSI code page
codec = codecs.lookup(encoding)
self.assertEqual(codec.name, "mbcs")
# Check that looking up our 'default' codepage will return
# mbcs when we don't have a more specific one available
code_page = 99_999
name = f'cp{code_page}'
with mock.patch('_winapi.GetACP', return_value=code_page):
try:
codec = codecs.lookup(name)
self.assertEqual(codec.name, 'mbcs')
finally:
codecs.unregister(name)
@support.bigmemtest(size=2**31, memuse=7, dry_run=False)
def test_large_input(self, size):