anchor.diff:      # example line: 2020-06-20 10:01:32 DEBUG (MainThread) [homeassistant.components.mqtt] Received message on home-assistant/test: b'let_there_be_light'
       with subtest("Check we received the mosquitto message"):
           assert "let_there_be_light" in output_log
  +
  +    with subtest("Check systemd unit hardening"):
  +        hass.log(hass.succeed("systemd-analyze security home-assistant.service"))
     '';
   })
  
positive.code:         hass.succeed(
              "mosquitto_pub -V mqttv5 -t home-assistant/test -u ${mqttUsername} -P '${mqttPassword}' -m let_there_be_light"
          )
      with subtest("Print log to ease debugging"):
          output_log = hass.succeed("cat ${configDir}/home-assistant.log")
          print("\n### home-assistant.log ###\n")
  
negative.code:           payload_on = "let_there_be_light";
            payload_off = "off";
          }];
          emulated_hue = {
            host_ip = "127.0.0.1";
            listen_port = 80;
          };
          logger = {
            default = "info";
            logs."homeassistant.components.mqtt" = "debug";
  