text: #!/usr/bin/env python3
  
  # Test whether a PUBLISH to a topic starting with $ succeeds
  
  from mosq_test_helper import *
  
  rc = 1
  mid = 19
  keepalive = 60
  connect_packet = mosq_test.gen_connect("pub-dollar-test", keepalive=keepalive)
  connack_packet = mosq_test.gen_connack(rc=0)
  
  publish_packet = mosq_test.gen_publish("$test/test", qos=1, mid=mid, payload="message")
  puback_packet = mosq_test.gen_puback(mid)
  
  port = mosq_test.get_port()
  broker = mosq_test.start_broker(filename=os.path.basename(__file__), port=port)
  
  try:
      sock = mosq_test.do_client_connect(connect_packet, connack_packet, port=port)
      mosq_test.do_send_receive(sock, publish_packet, puback_packet, "puback")
  
      rc = 0
  
      sock.close()
  finally:
      broker.terminate()
      broker.wait()
      (stdo, stde) = broker.communicate()
      if rc:
          print(stde.decode('utf-8'))
  
  exit(rc)
  
  