bpo-33709: test_ntpath and test_posixpath fail in Windows with ACP!=1252. (GH-7278)

8752dfbd · native-api · Serhiy Storchaka · 6ea9d54d · 8752dfbd
Commit 8752dfbd authored Dec 06, 2018 by native-api Committed by Serhiy Storchaka Dec 06, 2018
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Lib/test/support/__init__.py Lib/test/support/__init__.py +5 -1

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--- a/Lib/test/support/__init__.py
+++ b/Lib/test/support/__init__.py
@@ -871,7 +871,11 @@ for character in (
    '\u20AC',
 ):
    try:
-        os.fsdecode(os.fsencode(character))
+        # If Python is set up to use the legacy 'mbcs' in Windows,
+        # 'replace' error mode is used, and encode() returns b'?'
+        # for characters missing in the ANSI codepage
+        if os.fsdecode(os.fsencode(character)) != character:
+            raise UnicodeError
    except UnicodeError:
        pass
    else: