Method cancel_wait

Lib/test/test_asyncio/test_subprocess.py:538–554

()

        # Issue #23140: cancel Process.wait()

        async def cancel_wait():
            proc = await asyncio.create_subprocess_exec(*PROGRAM_BLOCKED)

            # Create an internal future waiting on the process exit
            task = self.loop.create_task(proc.wait())
            self.loop.call_soon(task.cancel)
            try:
                await task
            except asyncio.CancelledError:
                pass

            # Cancel the future
            task.cancel()

            # Kill the process and wait until it is done
            proc.kill()
            await proc.wait()

        self.loop.run_until_complete(cancel_wait())