Method test_patma_generic_protocol

Lib/test/test_patma.py:2805–2833

(self)

    def test_patma_generic_protocol(self):
        # Runtime-checkable generic protocol
        from typing import Generic, TypeVar, Protocol, runtime_checkable

        T = TypeVar('T')  # not using PEP695 to be able to backport changes

        @runtime_checkable
        class P(Protocol[T]):
            a: T
            b: T

        class A:
            def __init__(self, x: int, y: int):
                self.x = x
                self.y = y

        class G(Generic[T]):
            def __init__(self, x: T, y: T):
                self.x = x
                self.y = y

        for cls in (A, G):
            with self.subTest(cls=cls.__name__):
                inst = cls(1, 2)
                w = 0
                match inst:
                    case P():
                        w = 1
                self.assertEqual(w, 0)

    def test_patma_protocol_with_match_args(self):
        # Runtime-checkable protocol with `__match_args__`