Issue #13757: Change os.fdlistdir() so that it duplicates the passed file

descriptor (instead of closing it).

1 files changed, 2 insertions, 8 deletions

diff --git a/Lib/test/test_posix.py b/Lib/test/test_posix.py
index 07755b983a..f8c6baa083 100644
--- a/Lib/test/test_posix.py
+++ b/Lib/test/test_posix.py
@@ -455,20 +455,14 @@ class PosixTester(unittest.TestCase):
     def test_fdlistdir(self):
         f = posix.open(posix.getcwd(), posix.O_RDONLY)
         self.addCleanup(posix.close, f)
-        f1 = posix.dup(f)
         self.assertEqual(
             sorted(posix.listdir('.')),
-            sorted(posix.fdlistdir(f1))
+            sorted(posix.fdlistdir(f))
             )
-        # Check the fd was closed by fdlistdir
-        with self.assertRaises(OSError) as ctx:
-            posix.close(f1)
-        self.assertEqual(ctx.exception.errno, errno.EBADF)
         # Check that the fd offset was reset (issue #13739)
-        f2 = posix.dup(f)
         self.assertEqual(
             sorted(posix.listdir('.')),
-            sorted(posix.fdlistdir(f2))
+            sorted(posix.fdlistdir(f))
             )
 
     def test_access(self):