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-rw-r--r--Lib/test/test_genericalias.py5
1 files changed, 5 insertions, 0 deletions
diff --git a/Lib/test/test_genericalias.py b/Lib/test/test_genericalias.py
index 1f24469471..643fffc073 100644
--- a/Lib/test/test_genericalias.py
+++ b/Lib/test/test_genericalias.py
@@ -287,6 +287,11 @@ class BaseTest(unittest.TestCase):
self.assertEqual(a.__args__, (list[T], tuple[T, ...]))
self.assertEqual(a.__parameters__, (T,))
+ def test_dir(self):
+ dir_of_gen_alias = set(dir(list[int]))
+ self.assertTrue(dir_of_gen_alias.issuperset(dir(list)))
+ for generic_alias_property in ("__origin__", "__args__", "__parameters__"):
+ self.assertIn(generic_alias_property, dir_of_gen_alias)
if __name__ == "__main__":
unittest.main()