Method test_cancel_inner_future

Lib/test/test_asyncio/test_tasks.py:869–882

(self)

        self.assertFalse(t.cancel())

    def test_cancel_inner_future(self):
        f = self.new_future(self.loop)

        async def task():
            await f
            return 12

        t = self.new_task(self.loop, task())
        test_utils.run_briefly(self.loop)  # start task
        f.cancel()
        with self.assertRaises(asyncio.CancelledError):
            self.loop.run_until_complete(t)
        self.assertTrue(f.cancelled())
        self.assertTrue(t.cancelled())

    def test_cancel_both_task_and_inner_future(self):
        f = self.new_future(self.loop)