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;
  
  import static org.junit.jupiter.api.Assertions.assertFalse;
  
  import java.util.EnumSet;
  import java.util.concurrent.CountDownLatch;
  import java.util.concurrent.TimeUnit;
  
  import org.apache.activemq.artemis.api.core.RoutingType;
  import org.apache.activemq.artemis.api.core.SimpleString;
  import org.apache.activemq.artemis.api.core.client.ActiveMQClient;
  import org.apache.activemq.artemis.api.core.client.ClientSession;
  import org.apache.activemq.artemis.api.core.client.ClientSessionFactory;
  import org.apache.activemq.artemis.api.core.client.ServerLocator;
  import org.apache.activemq.artemis.tests.integration.mqtt5.MQTT5TestSupport;
  import org.eclipse.paho.mqttv5.client.MqttClient;
  import org.eclipse.paho.mqttv5.common.MqttMessage;
  import org.junit.jupiter.api.Test;
  import org.junit.jupiter.api.Timeout;
  
  /*
   * Fulfilled by client or Netty codec (i.e. not tested here):
   *
   * [MQTT-4.7.0-1] The wildcard characters can be used in Topic Filters, but MUST NOT be used within a Topic Name.
   * [MQTT-4.7.1-1] The multi-level wildcard character MUST be specified either on its own or following a topic level separator. In either case it MUST be the last character specified in the Topic Filter.
   * [MQTT-4.7.1-2] The single-level wildcard can be used at any level in the Topic Filter, including first and last levels. Where it is used, it MUST occupy an entire level of the filter.
   * [MQTT-4.7.3-1] All Topic Names and Topic Filters MUST be at least one character long.
   * [MQTT-4.7.3-2] Topic Names and Topic Filters MUST NOT include the null character (Unicode U+0000).
   * [MQTT-4.7.3-3] Topic Names and Topic Filters are UTF-8 Encoded Strings; they MUST NOT encode to more than 65,535 bytes.
   *
   *
   * I'm not sure how to test this since it's a negative:
   *
   * [MQTT-4.7.3-4] When it performs subscription matching the Server MUST NOT perform any normalization of Topic Names or Topic Filters, or any modification or substitution of unrecognized characters.
   */
  
  public class TopicNameAndFilterTests extends MQTT5TestSupport {
  
     /*
      * [MQTT-4.7.2-1] The Server MUST NOT match Topic Filters starting with a wildcard character (# or +) with Topic
      * Names beginning with a $ character.
      */
     @Test
     @Timeout(DEFAULT_TIMEOUT_SEC)
     public void testMatchingHash() throws Exception {
        testMatchingWildcard("#");
     }
  
     /*
      * [MQTT-4.7.2-1] The Server MUST NOT match Topic Filters starting with a wildcard character (# or +) with Topic
      * Names beginning with a $ character.
      */
     @Test
     @Timeout(DEFAULT_TIMEOUT_SEC)
     public void testMatchingPlus() throws Exception {
        testMatchingWildcard("+");
     }
  
     private void testMatchingWildcard(String wildcard) throws Exception {
        final CountDownLatch latch = new CountDownLatch(1);
  
        MqttClient consumer = createPahoClient("consumer");
        consumer.connect();
        consumer.setCallback(new DefaultMqttCallback() {
           @Override
           public void messageArrived(String incomingTopic, MqttMessage message) throws Exception {
              latch.countDown();
           }
        });
        consumer.subscribe(wildcard, 0);
  
        final SimpleString DOLLAR_TOPIC = SimpleString.of("$foo");
        ServerLocator locator = ActiveMQClient.createServerLocator("vm://0");
        ClientSessionFactory csf = locator.createSessionFactory();
        ClientSession s = csf.createSession();
        s.createAddress(DOLLAR_TOPIC, EnumSet.allOf(RoutingType.class), false);
        s.createProducer(DOLLAR_TOPIC).send(s.createMessage(true));
  
        assertFalse(latch.await(2, TimeUnit.SECONDS));
     }
  }
  