Method test_non_generic_subscript

Lib/test/test_typing.py:8333–8345

(self)

        self.assertEqual(X[str].__parameters__, ())

    def test_non_generic_subscript(self):
        # For backward compatibility, subscription works
        # on arbitrary NamedTuple types.
        class Group(NamedTuple):
            key: T
            group: list[T]
        A = Group[int]
        self.assertEqual(A.__origin__, Group)
        self.assertEqual(A.__parameters__, ())
        self.assertEqual(A.__args__, (int,))
        a = A(1, [2])
        self.assertIs(type(a), Group)
        self.assertEqual(a, (1, [2]))

    def test_empty_namedtuple(self):
        with self.assertRaisesRegex(TypeError, "missing.*required.*argument"):