async def test_aux_cleanup(event_loop):
aux_app = Application()
aux_app.on_cleanup.append(cleanup_aux_app)
ws = MagicMock()
ws.close = MagicMock(return_value=create_future())
aux_app['websockets'] = [(ws, '/foo/bar')]
aux_app.freeze()
await aux_app.cleanup()
assert ws.close.call_count == 1
