diff --git a/Lib/test/test_tarfile.py b/Lib/test/test_tarfile.py
index 5c084688dc24d5..cf7d19d02f8063 100644
--- a/Lib/test/test_tarfile.py
+++ b/Lib/test/test_tarfile.py
@@ -1020,6 +1020,21 @@ def test_header_offset(self):
"iso8859-1", "strict")
self.assertEqual(tarinfo.type, self.longnametype)
+ def test_longname_directory(self):
+ # Test reading a longlink directory. Issue #47231.
+ longdir = ('a' * 101) + '/'
+ with os_helper.temp_cwd():
+ with tarfile.open(tmpname, 'w') as tar:
+ tar.format = self.format
+ try:
+ os.mkdir(longdir)
+ tar.add(longdir)
+ finally:
+ os.rmdir(longdir.rstrip("/"))
+ with tarfile.open(tmpname) as tar:
+ self.assertIsNotNone(tar.getmember(longdir))
+ self.assertIsNotNone(tar.getmember(longdir.removesuffix('/')))
+
class GNUReadTest(LongnameTest, ReadTest, unittest.TestCase):
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