import asyncio


async def start(actual_coroutine):
    """
    Start the testing coroutine and wait 1 second for it to complete.
    :raises asyncio.CancelledError when the coroutine fails to finish its work
        in 1 second.
    :returns: the return value of the actual_coroutine.
    :rtype: Any

    """
    try:
        return await asyncio.wait_for(actual_coroutine, 2)
    except asyncio.CancelledError:
        pass