Message handler not fired for blank message in QOS mode about amqp-coffee HOT 3 CLOSED

it 'test we can consume an empty message', (done)->
    amqp = null
    queue = uuid()

    messageProcessor = (m)->
      done()

    async.series [
      (next)->
        amqp = new AMQP { host:'localhost' }, (e, r)->
          should.not.exist e
          next()

      (next)->
        amqp.queue {queue}, (e,q)->
          q.declare ()->
            q.bind "amq.direct", queue, next

      (next)->
        amqp.publish "amq.direct", queue, undefined, {confirm: true}, next

      (next)->
        amqp.consume queue, {}, messageProcessor, (e,r)->
          should.not.exist e
          next()
    ]