bpo-30879: os.listdir() and os.scandir() now emit bytes names when (#2634)

called with bytes-like argument.

1 files changed, 16 insertions, 0 deletions

diff --git a/Lib/test/test_os.py b/Lib/test/test_os.py
index 49e5a37..5ff18ce 100644
--- a/Lib/test/test_os.py
+++ b/Lib/test/test_os.py
@@ -3420,6 +3420,22 @@ class TestScandir(unittest.TestCase):
         self.assertEqual(entry.path,
                          os.fsencode(os.path.join(self.path, 'file.txt')))
 
+    def test_bytes_like(self):
+        self.create_file("file.txt")
+
+        for cls in bytearray, memoryview:
+            path_bytes = cls(os.fsencode(self.path))
+            with self.assertWarns(DeprecationWarning):
+                entries = list(os.scandir(path_bytes))
+            self.assertEqual(len(entries), 1, entries)
+            entry = entries[0]
+
+            self.assertEqual(entry.name, b'file.txt')
+            self.assertEqual(entry.path,
+                             os.fsencode(os.path.join(self.path, 'file.txt')))
+            self.assertIs(type(entry.name), bytes)
+            self.assertIs(type(entry.path), bytes)
+
     @unittest.skipUnless(os.listdir in os.supports_fd,
                          'fd support for listdir required for this test.')
     def test_fd(self):