@asyncio.coroutine
def add_getter():
    q = asyncio.Queue(loop=loop)
    asyncio.Task(q.get(), loop=loop)
    (yield from asyncio.sleep(0.1, loop=loop))
    self.assertTrue(('_getters[1]' in fn(q)))
    q.put_nowait(0)
@asyncio.coroutine
def add_getter():
    q = asyncio.Queue(loop=loop)
    asyncio.Task(q.get(), loop=loop)
    (yield from asyncio.sleep(0.1, loop=loop))
    self.assertTrue(('_getters[1]' in fn(q)))
    q.put_nowait(0)