Method test_order_in_union

Lib/test/test_typing.py:9538–9547

(self)

                         Union[int, Annotated[int, {}]])

    def test_order_in_union(self):
        expr1 = Annotated[int, 1] | str | Annotated[str, {}] | int
        for args in itertools.permutations(get_args(expr1)):
            with self.subTest(args=args):
                self.assertEqual(expr1, reduce(operator.or_, args))

        expr2 = Union[Annotated[int, 1], str, Annotated[str, {}], int]
        for args in itertools.permutations(get_args(expr2)):
            with self.subTest(args=args):
                self.assertEqual(expr2, Union[args])

    def test_specialize(self):
        L = Annotated[List[T], "my decoration"]