def handle_message(message, worker):
  Assert.not_null(message)
  Assert.not_null(message.id)
  Assert.not_null(message.body)
  Assert.equals('test', message.tag)
  worker.emit(message.body, parent=message)
  worker.ack(message)
 def ack_handler(error):
   Assert.not_null(error)
   Test.complete()
def handle_message(message, worker):
  Assert.not_null(message)
  Assert.not_null(message.id)
  Assert.not_null(message.body)
  worker.fail(message)
def worker_start(error, worker):
  if error:
    Assert.true(False)
  else:
    Assert.not_null(worker)