8000 [3.14] gh-133374: fix test_python_legacy_windows_stdio (GH-134080) by miss-islington · Pull Request #134314 · python/cpython · GitHub
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[3.14] gh-133374: fix test_python_legacy_windows_stdio (GH-134080) #134314

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Merged
merged 1 commit into from
May 20, 2025
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[3.14] gh-133374: fix test_python_legacy_windows_stdio (GH-134080) #134314

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23 changes: 19 additions & 4 deletions Lib/test/test_cmd_line.py
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Original file line number Diff line number Diff line change
Expand Up @@ -972,10 +972,25 @@ def test_python_legacy_windows_fs_encoding(self):

@unittest.skipUnless(support.MS_WINDOWS, 'Test only applicable on Windows')
def test_python_legacy_windows_stdio(self):
code = "import sys; print(sys.stdin.encoding, sys.stdout.encoding)"
expected = 'cp'
rc, out, err = assert_python_ok('-c', code, PYTHONLEGACYWINDOWSSTDIO='1')
self.assertIn(expected.encode(), out)
# Test that _WindowsConsoleIO is used when PYTHONLEGACYWINDOWSSTDIO
# is not set.
# We cannot use PIPE becase it prevents creating new console.
# So we use exit code.
code = "import sys; sys.exit(type(sys.stdout.buffer.raw).__name__ != '_WindowsConsoleIO')"
env = os.environ.copy()
env["PYTHONLEGACYWINDOWSSTDIO"] = ""
p = subprocess.run([sys.executable, "-c", code],
creationflags=subprocess.CREATE_NEW_CONSOLE,
env=env)
self.assertEqual(p.returncode, 0)

# Then test that FIleIO is used when PYTHONLEGACYWINDOWSSTDIO is set.
code = "import sys; sys.exit(type(sys.stdout.buffer.raw).__name__ != 'FileIO')"
env["PYTHONLEGACYWINDOWSSTDIO"] = "1"
p = subprocess.run([sys.executable, "-c", code],
creationflags=subprocess.CREATE_NEW_CONSOLE,
env=env)
self.assertEqual(p.returncode, 0)

@unittest.skipIf("-fsanitize" in sysconfig.get_config_vars().get('PY_CFLAGS', ()),
"PYTHONMALLOCSTATS doesn't work with ASAN")
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