Fixed issue #16 publish of will message with qos > 0

tools_scripts/integration/issue16_will_publish.groovy

@@ -0,0 +1,51 @@
+@GrabResolver(name='Paho', root='https://repo.eclipse.org/content/repositories/paho-releases/')
+//@Grab(group='org.eclipse.paho', module='org.eclipse.paho.client.mqttv3', version='1.0.1', ext='jar')
+@Grab(group='org.fusesource.mqtt-client', module='mqtt-client', version='1.10')
+
+import org.fusesource.mqtt.client.BlockingConnection
+import org.fusesource.mqtt.client.MQTT
+import org.fusesource.mqtt.client.Message
+import org.fusesource.mqtt.client.QoS
+import org.fusesource.mqtt.client.Topic
+
+String host = args.size() == 1 ? args[0] : "localhost"
+
+MQTT mqttWill = new MQTT()
+mqttWill.setHost(host, 1883)
+mqttWill.setClientId("WillClient")
+mqttWill.setWillTopic("/willtopic")
+mqttWill.setWillMessage("Will message testment")
+//AT_MOST_ONCE,
+//AT_LEAST_ONCE,
+//EXACTLY_ONCE
+mqttWill.willQos = QoS.AT_LEAST_ONCE
+BlockingConnection willClient = mqttWill.blockingConnection()
+willClient.connect()
+println "Will Client connected"
+
+
+println "Connect a subscriber to the topic"
+MQTT mqtt = new MQTT()
+//mqtt.setHost("test.mosquitto.org", 1883);
+mqtt.setHost(host, 1883)
+mqtt.setCleanSession(true)
+mqtt.setHost(host, 1883)
+
+mqtt.setClientId("SubscriberClient")
+BlockingConnection connection = mqtt.blockingConnection()
+connection.connect()
+println "Connected to ${host}"
+
+Topic[] topics = [new Topic("/willtopic", QoS.AT_MOST_ONCE)]
+byte[] qoses = connection.subscribe(topics)
+println "subscribed to /willtopic qos: ${qoses[0]}"
+
+//simulate a disconnection of the willclient
+willClient.kill()
+
+Message message = connection.receive()
+assert message.topic == "/willtopic"
+message.ack()
+
+connection.disconnect()
+