content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You under the Apache License, Version 2.0
   * (the "License"); you may not use this file except in compliance with
   * the License.  You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.apache.activemq.artemis.tests.integration.mqtt5.spec.controlpackets;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertFalse;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  import org.apache.activemq.artemis.api.core.SimpleString;
  import org.apache.activemq.artemis.core.protocol.mqtt.MQTTReasonCodes;
  import org.apache.activemq.artemis.tests.integration.mqtt5.MQTT5TestSupport;
  import org.apache.activemq.artemis.utils.RandomUtil;
  import org.eclipse.paho.mqttv5.client.IMqttToken;
  import org.eclipse.paho.mqttv5.client.MqttAsyncClient;
  import org.eclipse.paho.mqttv5.common.MqttSubscription;
  import org.eclipse.paho.mqttv5.common.packet.MqttUnsubAck;
  import org.junit.jupiter.api.Test;
  import org.junit.jupiter.api.Timeout;
  
  /*
   * The broker doesn't send any "Reason String" or "User Property" in the UNSUBACK packet for any reason. Therefore, these are not tested here:
   *
   * [MQTT-3.11.2-1] The Server MUST NOT send this Property if it would increase the size of the UNSUBACK packet beyond the Maximum Packet Size specified by the Client.
   * [MQTT-3.11.2-2] The Server MUST NOT send this property if it would increase the size of the UNSUBACK packet beyond the Maximum Packet Size specified by the receiver.
   */
  
  public class UnsubAckTests extends MQTT5TestSupport {
  
     /*
      * [MQTT-3.11.3-1] The order of Reason Codes in the UNSUBACK packet MUST match the order of Topic Filters in the
      * UNSUBSCRIBE packet.
      *
      * [MQTT-3.11.3-2] The Server sending the UNSUBACK packet MUST use one of the UNSUBSCRIBE Reason Code values for each
      * Topic Filter received.
      */
     @Test
     @Timeout(DEFAULT_TIMEOUT_SEC)
     public void testUnsubscribeAck() throws Exception {
        final int SUBSCRIPTION_COUNT = 10;
        final String TOPIC = RandomUtil.randomUUIDString();
        SimpleString[] topicNames = new SimpleString[SUBSCRIPTION_COUNT];
        for (int i = 0; i < SUBSCRIPTION_COUNT; i++) {
           topicNames[i] = SimpleString.of(i + "-" + TOPIC);
        }
  
        MqttAsyncClient consumer = createAsyncPahoClient("consumer");
        consumer.connect().waitForCompletion();
        MqttSubscription[] subscriptions = new MqttSubscription[SUBSCRIPTION_COUNT];
        for (int i = 0; i < SUBSCRIPTION_COUNT; i++) {
           subscriptions[i] = new MqttSubscription(topicNames[i].toString(), 0);
        }
        consumer.subscribe(subscriptions).waitForCompletion();
  
        for (int i = 0; i < SUBSCRIPTION_COUNT; i++) {
           assertTrue(server.getPostOffice().isAddressBound(topicNames[i]));
        }
  
        // unsubscribe from all the real subscriptions interleaved with subscriptions that *don't exist*
        String[] unsubTopicNames = new String[SUBSCRIPTION_COUNT * 2];
        for (int i = 0; i <= SUBSCRIPTION_COUNT; i++) {
           if (i != SUBSCRIPTION_COUNT) {
              unsubTopicNames[i * 2] = topicNames[i].toString();
           }
           if (i != 0) {
              unsubTopicNames[(i * 2) - 1] = RandomUtil.randomUUIDString();
           }
        }
        IMqttToken token = consumer.unsubscribe(unsubTopicNames);
        token.waitForCompletion();
        for (int i = 0; i < SUBSCRIPTION_COUNT; i++) {
           assertFalse(server.getPostOffice().isAddressBound(topicNames[i]));
        }
  
        MqttUnsubAck response = (MqttUnsubAck) token.getResponse();
        assertEquals(unsubTopicNames.length, response.getReturnCodes().length);
        for (int i = 0; i < response.getReturnCodes().length; i++) {
           if (i % 2 == 0) {
              assertEquals(MQTTReasonCodes.SUCCESS, response.getReturnCodes()[i]);
           } else {
              assertEquals(MQTTReasonCodes.NO_SUBSCRIPTION_EXISTED, response.getReturnCodes()[i]);
           }
        }
        System.out.println(response);
  
        consumer.disconnect();
        consumer.close();
     }
  }
  