tests/integration-tests/src/test/java/org/apache/activemq/artemis/tests/integration/SimpleTest.java

/*
 * 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
 * <br>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <br>
 * 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;

import org.apache.activemq.artemis.api.core.client.ClientConsumer;
import org.apache.activemq.artemis.api.core.client.ClientMessage;
import org.apache.activemq.artemis.api.core.client.ClientProducer;
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.core.server.ActiveMQServer;
import org.apache.activemq.artemis.tests.util.ActiveMQTestBase;
import org.junit.Before;
import org.junit.Test;

import java.util.UUID;

/**
 * A simple test-case used for documentation purposes.
 */
public class SimpleTest extends ActiveMQTestBase {

   protected ActiveMQServer server;

   protected ClientSession session;

   protected ClientSessionFactory sf;

   protected ServerLocator locator;

   @Override
   @Before
   public void setUp() throws Exception {
      /**
       * Invoke org.apache.activemq.artemis.tests.util.ActiveMQTestBase's setUp() to bootstrap everything properly.
       */
      super.setUp();

      /**
       * Create a configuration for an in-vm server.
       * Use that configuration to instantiate a new server that doesn't use persistence, and then start it.
       * Note that creating the server instance using this method ensures that the server will be cleaned up properly
       * when the test is torn down.
       */
      server = createServer(false, createDefaultInVMConfig());
      server.start();

      /**
       * Create a ServerLocator for the in-vm server. Using this method instead of using, e.g. ActiveMQClient.createServerLocatorWithHA(..),
       * ensures that the locator will be cleaned up properly when the test is torn down.
       */
      locator = createInVMNonHALocator();

      /**
       * Create a session factory from the server locator. Using this method instead of using, e.g. ServerLocator.createSessionFactory(),
       * ensures that the factory will be cleaned up properly when the test is torn down.
       */
      sf = createSessionFactory(locator);

      /**
       * Create a session from the factory. The call to create the session is surrounded with addClientSession to
       * ensure the session will be cleaned up properly when the test is torn down.
       */
      session = addClientSession(sf.createSession(false, true, true));
   }

   @Test
   public void simpleTest() throws Exception {
      final String data = "Simple Text " + UUID.randomUUID().toString();
      final String queueName = "simpleQueue";
      final String addressName = "simpleAddress";

      // Create a queue bound to a particular address where the test will send to & consume from.
      session.createQueue(addressName, queueName);

      // Create a producer to send a message to the previously created address.
      ClientProducer producer = session.createProducer(addressName);

      // Create a non-durable message.
      ClientMessage message = session.createMessage(false);

      // Put some data into the message.
      message.getBodyBuffer().writeString(data);

      // Send the message. This send will be auto-committed based on the way the session was created in setUp()
      producer.send(message);

      // Close the producer.
      producer.close();

      // Create a consumer on the queue bound to the address where the message was sent.
      ClientConsumer consumer = session.createConsumer(queueName);

      // Start the session to allow messages to be consumed.
      session.start();

      // Receive the message we sent previously.
      message = consumer.receive(1000);

      // Ensure the message was received.
      assertNotNull(message);

      // Acknowledge the message.
      message.acknowledge();

      // Ensure the data in the message received matches the data in the message sent.
      assertEquals(data, message.getBodyBuffer().readString());
   }
}