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   * Licensed to the Apache Software Foundation (ASF) under one or more
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   * 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
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  package org.apache.activemq.artemis.tests.integration.amqp;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  
  import javax.jms.Connection;
  import javax.jms.Message;
  import javax.jms.MessageConsumer;
  import javax.jms.MessageProducer;
  import javax.jms.Session;
  import javax.jms.TextMessage;
  import java.io.IOException;
  import java.util.concurrent.TimeUnit;
  
  import org.apache.activemq.artemis.api.core.QueueConfiguration;
  import org.apache.activemq.artemis.api.core.RoutingType;
  import org.apache.activemq.artemis.api.core.SimpleString;
  import org.apache.activemq.artemis.core.server.impl.AddressInfo;
  import org.apache.activemq.artemis.core.server.impl.QueueImpl;
  import org.apache.activemq.artemis.jms.client.ActiveMQConnectionFactory;
  import org.apache.activemq.artemis.tests.util.Wait;
  import org.apache.activemq.transport.amqp.client.AmqpClient;
  import org.apache.activemq.transport.amqp.client.AmqpConnection;
  import org.apache.activemq.transport.amqp.client.AmqpMessage;
  import org.apache.activemq.transport.amqp.client.AmqpReceiver;
  import org.apache.activemq.transport.amqp.client.AmqpSession;
  import org.junit.jupiter.api.Test;
  import org.junit.jupiter.api.Timeout;
  
  public class AmqpPurgeOnNoConsumersTest extends AmqpClientTestSupport {
  
     @Override
     protected String getConfiguredProtocols() {
        return "AMQP,OPENWIRE,CORE";
     }
  
     @Test
     @Timeout(60)
     public void testQueueReceiverReadMessage() throws Exception {
        AmqpConnection connection = null;
        String queue = "purgeQueue";
        SimpleString ssQueue = SimpleString.of(queue);
  
        server.addAddressInfo(new AddressInfo(ssQueue, RoutingType.ANYCAST));
        server.createQueue(QueueConfiguration.of(ssQueue).setRoutingType(RoutingType.ANYCAST).setMaxConsumers(1).setPurgeOnNoConsumers(true).setAutoCreateAddress(false));
  
        AmqpClient client = createAmqpClient();
        connection = addConnection(client.connect());
        AmqpSession session = connection.createSession();
  
        final AmqpReceiver receiver = session.createReceiver(queue);
  
        QueueImpl queueView = (QueueImpl)getProxyToQueue(queue);
        assertEquals(0L, queueView.getPageSubscription().getPagingStore().getAddressSize());
        assertEquals(0, queueView.getMessageCount());
  
        sendMessages(queue, 5, null, true);
  
        Wait.assertEquals(5, queueView::getMessageCount);
  
        receiver.flow(5);
  
        for (int i = 0; i < 4; i++) {
           try {
              AmqpMessage receive = receiver.receive(5, TimeUnit.SECONDS);
              receive.accept();
              assertNotNull(receive);
           } catch (Exception e) {
              e.printStackTrace();
           }
        }
        try {
           receiver.close();
        } catch (IOException e) {
           e.printStackTrace();
        }
  
        Wait.assertEquals(0, queueView::getMessageCount);
        assertEquals(0L, queueView.getPageSubscription().getPagingStore().getAddressSize());
  
        connection.close();
  
        server.stop();
  
        server.start();
  
        queueView = (QueueImpl)getProxyToQueue(queue);
  
        assertEquals(0, queueView.getMessageCount());
        assertEquals(0L, queueView.getPageSubscription().getPagingStore().getAddressSize());
     }
  
  
     // I'm adding the core test here to compare semantics between AMQP and core on this test.
     @Test
     @Timeout(60)
     public void testPurgeQueueCoreRollback() throws Exception {
        String queue = "purgeQueue";
        SimpleString ssQueue = SimpleString.of(queue);
        server.addAddressInfo(new AddressInfo(ssQueue, RoutingType.ANYCAST));
        server.createQueue(QueueConfiguration.of(ssQueue).setRoutingType(RoutingType.ANYCAST).setMaxConsumers(1).setPurgeOnNoConsumers(true).setAutoCreateAddress(false));
  
        ActiveMQConnectionFactory cf = new ActiveMQConnectionFactory("tcp://localhost:5672");
        Connection connection = cf.createConnection();
        Session session = connection.createSession(true, Session.SESSION_TRANSACTED);
        MessageProducer producer = session.createProducer(session.createQueue("purgeQueue"));
  
        javax.jms.Queue jmsQueue = session.createQueue(queue);
        MessageConsumer consumer = session.createConsumer(jmsQueue);
  
        for (int i = 0; i < 10; i++) {
           Message message = session.createTextMessage("hello " + i);
           producer.send(message);
        }
        session.commit();
  
        QueueImpl queueView = (QueueImpl)getProxyToQueue(queue);
  
        Wait.assertEquals(10, queueView::getMessageCount);
  
        connection.start();
  
  
        for (int i = 0; i < 10; i++) {
           TextMessage txt = (TextMessage)consumer.receive(1000);
           assertNotNull(txt);
           assertEquals("hello " + i, txt.getText());
        }
        consumer.close();
        session.rollback();
        connection.close();
  
        Wait.assertEquals(0, queueView::getMessageCount);
  
        server.stop();
  
        server.start();
  
        queueView = (QueueImpl)getProxyToQueue(queue);
  
        assertEquals(0, queueView.getMessageCount());
        assertEquals(0L, queueView.getPageSubscription().getPagingStore().getAddressSize());
     }
  }
  