bpo-18378: Recognize "UTF-8" as a valid name in locale._parse_localename (GH-14736)
diff --git a/Lib/test/test_locale.py b/Lib/test/test_locale.py
index 792a15c..c5d8e26 100644
--- a/Lib/test/test_locale.py
+++ b/Lib/test/test_locale.py
@@ -493,6 +493,42 @@
class TestMiscellaneous(unittest.TestCase):
+ def test_defaults_UTF8(self):
+ # Issue #18378: on (at least) macOS setting LC_CTYPE to "UTF-8" is
+ # valid. Futhermore LC_CTYPE=UTF is used by the UTF-8 locale coercing
+ # during interpreter startup (on macOS).
+ import _locale
+ import os
+
+ self.assertEqual(locale._parse_localename('UTF-8'), (None, 'UTF-8'))
+
+ if hasattr(_locale, '_getdefaultlocale'):
+ orig_getlocale = _locale._getdefaultlocale
+ del _locale._getdefaultlocale
+ else:
+ orig_getlocale = None
+
+ orig_env = {}
+ try:
+ for key in ('LC_ALL', 'LC_CTYPE', 'LANG', 'LANGUAGE'):
+ if key in os.environ:
+ orig_env[key] = os.environ[key]
+ del os.environ[key]
+
+ os.environ['LC_CTYPE'] = 'UTF-8'
+
+ self.assertEqual(locale.getdefaultlocale(), (None, 'UTF-8'))
+
+ finally:
+ for k in orig_env:
+ os.environ[k] = orig_env[k]
+
+ if 'LC_CTYPE' not in orig_env:
+ del os.environ['LC_CTYPE']
+
+ if orig_getlocale is not None:
+ _locale._getdefaultlocale = orig_getlocale
+
def test_getpreferredencoding(self):
# Invoke getpreferredencoding to make sure it does not cause exceptions.
enc = locale.getpreferredencoding()