from typing import Type

import asyncio
import traceback


class Parent:
    async def test(self) -> int:
        raise NotImplementedError()

    async def run(self) -> int:
        return await self.test()


class ChildTypeError1(Parent):
    async def test(self) -> int:
        return 1


class ChildTypeError2(Parent):
    async def run(self) -> int:
        return await self.test()


def test(cls: Type[Parent]) -> None:
    print(str(cls.__name__))
    try:
        print("- ", asyncio.run(cls().run()))
    except NotImplementedError:
        pass
    except Exception:
        traceback.print_exc()
        exit(1)


test(ChildTypeError1)
test(ChildTypeError2)
exit(0)