def test_pool_clean_shutdown():

       capture = py.io.StdCaptureFD() 

       pool = WorkerPool()

       def f():

           pass

       pool.dispatch(f)

       pool.dispatch(f)

->     pool.shutdown()

       pool.join(timeout=1.0)

       assert not pool._alive

       assert not pool._ready

       out, err = capture.reset()

       print out

       print >>sys.stderr, err

       assert err == ''