Method socket

src/trio/_tests/test_socket.py:1133–1139

(
            self,
            family: AddressFamily,
            type: SocketKind,
            proto: int,
        )

async def test_custom_socket_factory() -> None:
    class CustomSocketFactory:
        def socket(
            self,
            family: AddressFamily,
            type: SocketKind,
            proto: int,
        ) -> tuple[str, AddressFamily, SocketKind, int]:
            return ("hi", family, type, proto)

    csf = CustomSocketFactory()