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;
  
  import javax.jms.Connection;
  import javax.jms.JMSException;
  import javax.jms.Message;
  import javax.jms.MessageConsumer;
  import javax.jms.MessageProducer;
  import javax.jms.Queue;
  import javax.jms.Session;
  
  public class JmsClientAckTest extends TestSupport {
  
     private Connection connection;
  
     @Override
     protected void setUp() throws Exception {
        super.setUp();
        connection = createConnection();
     }
  
     @Override
     protected void tearDown() throws Exception {
        if (connection != null) {
           connection.close();
           connection = null;
        }
        super.tearDown();
     }
  
     /**
      * Tests if acknowledged messages are being consumed.
      */
     public void testAckedMessageAreConsumed() throws JMSException {
        connection.start();
        Session session = connection.createSession(false, Session.CLIENT_ACKNOWLEDGE);
        Queue queue = session.createQueue(getQueueName());
        MessageProducer producer = session.createProducer(queue);
        producer.send(session.createTextMessage("Hello"));
  
        // Consume the message...
        MessageConsumer consumer = session.createConsumer(queue);
        Message msg = consumer.receive(1000);
        assertNotNull(msg);
        msg.acknowledge();
  
        // Reset the session.
        session.close();
        session = connection.createSession(false, Session.CLIENT_ACKNOWLEDGE);
  
        // Attempt to Consume the message...
        consumer = session.createConsumer(queue);
        msg = consumer.receive(1000);
        assertNull(msg);
  
        session.close();
     }
  
     /**
      * Tests if acknowledged messages are being consumed.
      */
     public void testLastMessageAcked() throws JMSException {
        connection.start();
        Session session = connection.createSession(false, Session.CLIENT_ACKNOWLEDGE);
        Queue queue = session.createQueue(getQueueName());
        MessageProducer producer = session.createProducer(queue);
        producer.send(session.createTextMessage("Hello"));
        producer.send(session.createTextMessage("Hello2"));
        producer.send(session.createTextMessage("Hello3"));
  
        // Consume the message...
        MessageConsumer consumer = session.createConsumer(queue);
        Message msg = consumer.receive(1000);
        assertNotNull(msg);
        msg = consumer.receive(1000);
        assertNotNull(msg);
        msg = consumer.receive(1000);
        assertNotNull(msg);
        msg.acknowledge();
  
        // Reset the session.
        session.close();
        session = connection.createSession(false, Session.CLIENT_ACKNOWLEDGE);
  
        // Attempt to Consume the message...
        consumer = session.createConsumer(queue);
        msg = consumer.receive(1000);
        assertNull(msg);
  
        session.close();
     }
  
     /**
      * Tests if unacknowledged messages are being re-delivered when the consumer connects again.
      */
     public void testUnAckedMessageAreNotConsumedOnSessionClose() throws JMSException {
        connection.start();
        Session session = connection.createSession(false, Session.CLIENT_ACKNOWLEDGE);
        Queue queue = session.createQueue(getQueueName());
        MessageProducer producer = session.createProducer(queue);
        producer.send(session.createTextMessage("Hello"));
  
        // Consume the message...
        MessageConsumer consumer = session.createConsumer(queue);
        Message msg = consumer.receive(1000);
        assertNotNull(msg);
        // Don't ack the message.
  
        // Reset the session.  This should cause the unacknowledged message to be re-delivered.
        session.close();
        session = connection.createSession(false, Session.CLIENT_ACKNOWLEDGE);
  
        // Attempt to Consume the message...
        consumer = session.createConsumer(queue);
        msg = consumer.receive(2000);
        assertNotNull(msg);
        msg.acknowledge();
  
        session.close();
     }
  
     protected String getQueueName() {
        return getClass().getName() + "." + getName();
     }
  
  }
  