message: robust tests
diff: @@ -10,6 +10,7 @@ $pm->childFunc = function () {
  $port = get_one_free_port();
  $serv = new \swoole_server(TCP_SERVER_HOST, $port);
  $process = new \Swoole\Process(function ($process) use ($serv) {
  + usleep(10000);
  var_dump($serv->stats());
  $serv->shutdown();
  });
  