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gh-92106: Add test that subscription works on arbitrary TypedDicts (#92176)

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Serhiy Storchaka 2022-05-03 01:38:39 +03:00 • committed by GitHub
parent 4bed9c47bd
commit 81fb3548be
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13
Lib/test/test_typing.py
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@ -6024,6 +6024,19 @@ class TypedDictTests(BaseTestCase):
{'a': typing.Optional[int], 'b': int}
)
def test_non_generic_subscript(self):
# For backward compatibility, subscription works
# on arbitrary TypedDict types.
class TD(TypedDict):
a: T
A = TD[int]
self.assertEqual(A.__origin__, TD)
self.assertEqual(A.__parameters__, ())
self.assertEqual(A.__args__, (int,))
a = A(a = 1)
self.assertIs(type(a), dict)
self.assertEqual(a, {'a': 1})
class RequiredTests(BaseTestCase):