def METHOD_NAME(self):
    async def test():
        megaphone = new_megaphone()
        t0 = now()
        result_alice = await megaphone.say_after(200, 'Alice')
        t1 = now()
        t_delta = (t1 - t0).total_seconds()
        self.assertGreater(t_delta, 0.2)
        self.assertEqual(result_alice, 'HELLO, ALICE!')
    asyncio.run(test())