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.openwire.amq;
  
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  import static org.junit.jupiter.api.Assertions.assertNull;
  
  import javax.jms.DeliveryMode;
  import javax.jms.Message;
  import javax.jms.Session;
  import java.util.Arrays;
  import java.util.Collection;
  
  import org.apache.activemq.ActiveMQConnection;
  import org.apache.activemq.ActiveMQMessageConsumer;
  import org.apache.activemq.artemis.tests.extensions.parameterized.ParameterizedTestExtension;
  import org.apache.activemq.artemis.tests.extensions.parameterized.Parameters;
  import org.apache.activemq.artemis.tests.integration.openwire.BasicOpenWireTest;
  import org.apache.activemq.artemis.tests.util.Wait;
  import org.apache.activemq.command.ActiveMQDestination;
  import org.junit.jupiter.api.TestTemplate;
  import org.junit.jupiter.api.extension.ExtendWith;
  
  /**
   * adapted from: org.apache.activemq.JMSConsumerTest
   */
  @ExtendWith(ParameterizedTestExtension.class)
  public class JMSConsumer11Test extends BasicOpenWireTest {
  
     @Parameters(name = "deliveryMode={0}")
     public static Collection<Object[]> getParams() {
        return Arrays.asList(new Object[][]{{DeliveryMode.NON_PERSISTENT}, {DeliveryMode.PERSISTENT}});
     }
  
     public int deliveryMode;
  
     public JMSConsumer11Test(int deliveryMode) {
        this.deliveryMode = deliveryMode;
     }
  
     @TestTemplate
     public void testPrefetch1MessageNotDispatched() throws Exception {
        // Set prefetch to 1
        connection.getPrefetchPolicy().setAll(1);
        connection.start();
  
        Session session = connection.createSession(true, 0);
        ActiveMQDestination destination = createDestination(session, ActiveMQDestination.QUEUE_TYPE);
        ActiveMQMessageConsumer consumer = (ActiveMQMessageConsumer)session.createConsumer(destination);
  
        // Send 2 messages to the destination.
        sendMessages(session, destination, 2);
        session.commit();
  
        // The prefetch should fill up with 1 message.
        // Since prefetch is still full, the 2nd message should get dispatched
        // to another consumer.. lets create the 2nd consumer test that it does
        // make sure it does.
        ActiveMQConnection connection2 = (ActiveMQConnection) factory.createConnection();
        connection2.start();
        Session session2 = connection2.createSession(true, 0);
        ActiveMQMessageConsumer consumer2 = (ActiveMQMessageConsumer)session2.createConsumer(destination);
  
        // On a test race you could have a scenario where the message only arrived at the first consumer and
        // if the test is not fast enough the first consumer will receive the message againt
        // This will guarantee the test is correctly balanced.
        Wait.assertEquals(1, consumer::getMessageSize);
        Wait.assertEquals(1, consumer2::getMessageSize);
  
        // Pick up the first message.
        Message message1 = consumer.receive(1000);
        assertNotNull(message1);
  
        // Pick up the 2nd messages.
        Message message2 = consumer2.receive(5000);
        assertNotNull(message2);
  
        session.commit();
        session2.commit();
  
        Message m = consumer.receiveNoWait();
        assertNull(m);
  
        try {
           connection2.close();
        } catch (Throwable e) {
           System.err.println("exception e: " + e);
           e.printStackTrace();
        }
  
     }
  
  }
  