bpo-32539: Fix OSError for os.listdir() for extended-length paths on Windows (#5169)
See https://msdn.microsoft.com/en-us/library/windows/desktop/aa365247(v=vs.85).aspx?f=255&MSPPError=-2147217396#maxpath
Paths that begin with `\\?\` are "extended-length paths".
diff --git a/Lib/test/test_os.py b/Lib/test/test_os.py
index aca03fd..84e20e0 100644
--- a/Lib/test/test_os.py
+++ b/Lib/test/test_os.py
@@ -900,6 +900,56 @@
self._kill_with_event(signal.CTRL_BREAK_EVENT, "CTRL_BREAK_EVENT")
+@unittest.skipUnless(sys.platform == "win32", "Win32 specific tests")
+class Win32ListdirTests(unittest.TestCase):
+ """Test listdir on Windows."""
+
+ def setUp(self):
+ self.created_paths = []
+ for i in range(2):
+ dir_name = 'SUB%d' % i
+ dir_path = os.path.join(support.TESTFN, dir_name)
+ file_name = 'FILE%d' % i
+ file_path = os.path.join(support.TESTFN, file_name)
+ os.makedirs(dir_path)
+ with open(file_path, 'w') as f:
+ f.write("I'm %s and proud of it. Blame test_os.\n" % file_path)
+ self.created_paths.extend([dir_name, file_name])
+ self.created_paths.sort()
+
+ def tearDown(self):
+ shutil.rmtree(support.TESTFN)
+
+ def test_listdir_no_extended_path(self):
+ """Test when the path is not an "extended" path."""
+ # unicode
+ fs_encoding = sys.getfilesystemencoding()
+ self.assertEqual(
+ sorted(os.listdir(support.TESTFN.decode(fs_encoding))),
+ [path.decode(fs_encoding) for path in self.created_paths])
+
+ # bytes
+ self.assertEqual(
+ sorted(os.listdir(os.fsencode(support.TESTFN))),
+ self.created_paths)
+
+ def test_listdir_extended_path(self):
+ """Test when the path starts with '\\\\?\\'."""
+ # See: http://msdn.microsoft.com/en-us/library/windows/desktop/aa365247(v=vs.85).aspx#maxpath
+ # unicode
+ fs_encoding = sys.getfilesystemencoding()
+ path = u'\\\\?\\' + os.path.abspath(support.TESTFN.decode(fs_encoding))
+ self.assertEqual(
+ sorted(os.listdir(path)),
+ [path.decode(fs_encoding) for path in self.created_paths])
+
+ # bytes
+ path = b'\\\\?\\' + os.path.abspath(support.TESTFN)
+ self.assertEqual(
+ sorted(os.listdir(path)),
+ self.created_paths)
+
+
class SpawnTests(unittest.TestCase):
def _test_invalid_env(self, spawn):
args = [sys.executable, '-c', 'pass']