XATest.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
 *
 *     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.
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package org.apache.activemq.artemis.tests.extras.jms.xa;

import javax.jms.Connection;
import javax.jms.DeliveryMode;
import javax.jms.Message;
import javax.jms.MessageConsumer;
import javax.jms.MessageProducer;
import javax.jms.Queue;
import javax.jms.Session;
import javax.jms.TextMessage;
import javax.jms.XAConnection;
import javax.jms.XAConnectionFactory;
import javax.jms.XASession;
import javax.transaction.Transaction;
import javax.transaction.TransactionManager;
import javax.transaction.xa.XAException;
import javax.transaction.xa.XAResource;
import javax.transaction.xa.Xid;

import com.arjuna.ats.arjuna.coordinator.TransactionReaper;
import com.arjuna.ats.arjuna.coordinator.TxControl;
import com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionManagerImple;
import org.apache.activemq.artemis.api.jms.ActiveMQJMSClient;
import org.apache.activemq.artemis.core.client.impl.ClientSessionInternal;
import org.apache.activemq.artemis.tests.extras.ExtrasTestLogger;
import org.apache.activemq.artemis.tests.util.JMSTestBase;
import org.jboss.tm.TxUtils;
import org.junit.After;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;

public class XATest extends JMSTestBase {
   // Constants -----------------------------------------------------

   // Static --------------------------------------------------------

   // Attributes ----------------------------------------------------

   protected TransactionManager tm;

   protected Transaction suspendedTx;

   protected XAConnectionFactory xacf;

   protected Queue queue1;

   // Constructors --------------------------------------------------

   // TestCase overrides -------------------------------------------

   @Override
   @Before
   public void setUp() throws Exception {
      super.setUp();

      xacf = ActiveMQJMSClient.createConnectionFactory("tcp://localhost:61616", "test");

      queue1 = createQueue("queue1");
      TxControl.enable();

      tm = new TransactionManagerImple();

      Assert.assertTrue(tm instanceof TransactionManagerImple);

      suspendedTx = tm.suspend();
   }

   @Override
   @After
   public void tearDown() throws Exception {
      if (TxUtils.isUncommitted(tm)) {
         // roll it back
         try {
            tm.rollback();
         } catch (Throwable ignore) {
            // The connection will probably be closed so this may well throw an exception
         }
      }
      if (tm.getTransaction() != null) {
         Transaction tx = tm.suspend();
         if (tx != null) {
            ExtrasTestLogger.LOGGER.warn("Transaction still associated with thread " + tx +
                                            " at status " +
                                            TxUtils.getStatusAsString(tx.getStatus()));
         }
      }

      if (suspendedTx != null) {
         tm.resume(suspendedTx);
      }

      TxControl.disable(true);

      TransactionReaper.terminate(false);

      super.tearDown();

   }

   // Public --------------------------------------------------------

   @Test
   public void test2PCSendCommit1PCOptimization() throws Exception {
      // Since both resources have same RM, TM will probably use 1PC optimization

      XAConnection conn = null;
      Connection conn2 = null;

      try {
         conn = xacf.createXAConnection();

         tm.begin();

         XASession sess = conn.createXASession();
         XAResource res = sess.getXAResource();

         XAResource res2 = new DummyXAResource();

         Transaction tx = tm.getTransaction();
         tx.enlistResource(res);
         tx.enlistResource(res2);

         MessageProducer prod = sess.createProducer(queue1);
         prod.setDeliveryMode(DeliveryMode.NON_PERSISTENT);
         Message m = sess.createTextMessage("XATest1");
         prod.send(m);
         m = sess.createTextMessage("XATest2");
         prod.send(m);

         tx.delistResource(res, XAResource.TMSUCCESS);
         tx.delistResource(res2, XAResource.TMSUCCESS);

         tm.commit();

         conn2 = cf.createConnection();
         conn2.start();
         Session sessReceiver = conn2.createSession(false, Session.AUTO_ACKNOWLEDGE);
         MessageConsumer cons = sessReceiver.createConsumer(queue1);
         TextMessage m2 = (TextMessage) cons.receive(1000);
         Assert.assertNotNull(m2);
         Assert.assertEquals("XATest1", m2.getText());
         m2 = (TextMessage) cons.receive(1000);
         Assert.assertNotNull(m2);
         Assert.assertEquals("XATest2", m2.getText());
      } finally {
         if (conn != null) {
            conn.close();
         }
         if (conn2 != null) {
            conn2.close();
         }
      }
   }

   @Test
   public void test2PCSendCommit() throws Exception {
      XAConnection conn = null;
      Connection conn2 = null;

      try {
         conn = xacf.createXAConnection();

         tm.begin();

         XASession sess = conn.createXASession();

         XAResource res = sess.getXAResource();
         XAResource res2 = new DummyXAResource();

         // To prevent 1PC optimization being used
         // res.setForceNotSameRM(true);

         Transaction tx = tm.getTransaction();

         tx.enlistResource(res);

         tx.enlistResource(res2);

         MessageProducer prod = sess.createProducer(queue1);
         prod.setDeliveryMode(DeliveryMode.NON_PERSISTENT);
         Message m = sess.createTextMessage("XATest1");
         prod.send(m);
         m = sess.createTextMessage("XATest2");
         prod.send(m);

         tx.delistResource(res, XAResource.TMSUCCESS);
         tx.delistResource(res2, XAResource.TMSUCCESS);

         tm.commit();

         conn2 = cf.createConnection();
         conn2.start();
         Session sessReceiver = conn2.createSession(false, Session.AUTO_ACKNOWLEDGE);
         MessageConsumer cons = sessReceiver.createConsumer(queue1);
         TextMessage m2 = (TextMessage) cons.receive(5000);
         Assert.assertNotNull(m2);
         Assert.assertEquals("XATest1", m2.getText());
         m2 = (TextMessage) cons.receive(5000);
         Assert.assertNotNull(m2);
         Assert.assertEquals("XATest2", m2.getText());
      } finally {
         if (conn != null) {
            conn.close();
         }
         if (conn2 != null) {
            conn2.close();
         }
      }
   }

   @Test
   public void test2PCSendFailOnPrepare() throws Exception {
      XAConnection conn = null;
      Connection conn2 = null;
      try {
         conn = xacf.createXAConnection();

         tm.begin();

         XASession sess = conn.createXASession();
         XAResource res = sess.getXAResource();

         // prevent 1Pc optimisation
         // res.setForceNotSameRM(true);

         XAResource res2 = new DummyXAResource(true);
         XAResource res3 = new DummyXAResource();
         XAResource res4 = new DummyXAResource();

         Transaction tx = tm.getTransaction();
         tx.enlistResource(res);
         tx.enlistResource(res2);
         tx.enlistResource(res3);
         tx.enlistResource(res4);

         MessageProducer prod = sess.createProducer(null);
         prod.setDeliveryMode(DeliveryMode.NON_PERSISTENT);
         Message m = sess.createTextMessage("XATest1");
         prod.send(queue1, m);
         m = sess.createTextMessage("XATest2");
         prod.send(queue1, m);

         tx.delistResource(res, XAResource.TMSUCCESS);
         tx.delistResource(res2, XAResource.TMSUCCESS);
         tx.delistResource(res3, XAResource.TMSUCCESS);
         tx.delistResource(res4, XAResource.TMSUCCESS);

         try {
            tm.commit();

            Assert.fail("should not get here");
         } catch (Exception e) {
            // We should expect this
         }

         conn2 = cf.createConnection();
         conn2.start();
         Session sessReceiver = conn2.createSession(false, Session.AUTO_ACKNOWLEDGE);
         MessageConsumer cons = sessReceiver.createConsumer(queue1);
         Message m2 = cons.receive(100);
         Assert.assertNull(m2);
      } finally {
         if (conn != null) {
            conn.close();
         }
         if (conn2 != null) {
            conn2.close();
         }
      }
   }

   @Test
   public void test2PCSendRollback() throws Exception {
      XAConnection conn = null;
      Connection conn2 = null;
      try {
         conn = xacf.createXAConnection();

         tm.begin();

         XASession sess = conn.createXASession();
         XAResource res = sess.getXAResource();

         // prevent 1Pc optimisation
         // res.setForceNotSameRM(true);

         XAResource res2 = new DummyXAResource();

         Transaction tx = tm.getTransaction();
         tx.enlistResource(res);
         tx.enlistResource(res2);

         MessageProducer prod = sess.createProducer(null);
         prod.setDeliveryMode(DeliveryMode.NON_PERSISTENT);
         Message m = sess.createTextMessage("XATest1");
         prod.send(queue1, m);
         m = sess.createTextMessage("XATest2");
         prod.send(queue1, m);

         tx.delistResource(res, XAResource.TMSUCCESS);
         tx.delistResource(res2, XAResource.TMSUCCESS);

         tm.rollback();

         conn2 = cf.createConnection();
         conn2.start();
         Session sessReceiver = conn2.createSession(false, Session.AUTO_ACKNOWLEDGE);
         MessageConsumer cons = sessReceiver.createConsumer(queue1);
         Message m2 = cons.receive(100);
         Assert.assertNull(m2);

      } finally {
         if (conn != null) {
            conn.close();
         }
         if (conn2 != null) {
            conn2.close();
         }
      }
   }

   @Test
   public void test2PCReceiveCommit1PCOptimization() throws Exception {
      // Since both resources have some RM, TM will probably use 1PC optimization

      XAConnection conn = null;
      Connection conn2 = null;

      try {
         conn2 = cf.createConnection();
         conn2.start();
         Session sessProducer = conn2.createSession(false, Session.AUTO_ACKNOWLEDGE);
         MessageProducer prod = sessProducer.createProducer(queue1);
         Message m = sessProducer.createTextMessage("XATest1");
         prod.send(m);
         m = sessProducer.createTextMessage("XATest2");
         prod.send(m);

         conn = xacf.createXAConnection();
         conn.start();

         tm.begin();

         XASession sess = conn.createXASession();
         XAResource res = sess.getXAResource();

         XAResource res2 = new DummyXAResource();

         Transaction tx = tm.getTransaction();
         tx.enlistResource(res);
         tx.enlistResource(res2);

         MessageConsumer cons = sess.createConsumer(queue1);

         TextMessage m2 = (TextMessage) cons.receive(5000);

         Assert.assertNotNull(m2);
         Assert.assertEquals("XATest1", m2.getText());

         m2 = (TextMessage) cons.receive(5000);

         Assert.assertNotNull(m2);
         Assert.assertEquals("XATest2", m2.getText());

         tx.delistResource(res, XAResource.TMSUCCESS);
         tx.delistResource(res2, XAResource.TMSUCCESS);

         tm.commit();

         // New tx
         tm.begin();
         tx = tm.getTransaction();
         tx.enlistResource(res);
         tx.enlistResource(res2);

         Message m3 = cons.receive(100);

         Assert.assertNull(m3);

         tx.delistResource(res, XAResource.TMSUCCESS);
         tx.delistResource(res2, XAResource.TMSUCCESS);

         tm.commit();
      } finally {
         if (conn != null) {
            conn.close();
         }
         if (conn2 != null) {
            conn2.close();
         }
      }

   }

   @Test
   public void test2PCReceiveCommit() throws Exception {
      XAConnection conn = null;
      Connection conn2 = null;

      try {
         conn2 = cf.createConnection();
         conn2.start();
         Session sessProducer = conn2.createSession(false, Session.AUTO_ACKNOWLEDGE);
         MessageProducer prod = sessProducer.createProducer(queue1);
         Message m = sessProducer.createTextMessage("XATest1");
         prod.send(m);
         m = sessProducer.createTextMessage("XATest2");
         prod.send(m);

         conn = xacf.createXAConnection();
         conn.start();

         tm.begin();

         XASession sess = conn.createXASession();
         XAResource res = sess.getXAResource();
         // res.setForceNotSameRM(true);

         XAResource res2 = new DummyXAResource();

         Transaction tx = tm.getTransaction();
         tx.enlistResource(res);
         tx.enlistResource(res2);

         MessageConsumer cons = sess.createConsumer(queue1);

         TextMessage m2 = (TextMessage) cons.receive(5000);

         Assert.assertNotNull(m2);
         Assert.assertEquals("XATest1", m2.getText());

         m2 = (TextMessage) cons.receive(5000);

         Assert.assertNotNull(m2);
         Assert.assertEquals("XATest2", m2.getText());

         tx.delistResource(res, XAResource.TMSUCCESS);
         tx.delistResource(res2, XAResource.TMSUCCESS);

         tm.commit();

         // New tx
         tm.begin();
         tx = tm.getTransaction();
         tx.enlistResource(res);
         tx.enlistResource(res2);

         Message m3 = cons.receive(100);

         Assert.assertNull(m3);

         tx.delistResource(res, XAResource.TMSUCCESS);
         tx.delistResource(res2, XAResource.TMSUCCESS);

         tm.commit();
      } finally {
         if (conn != null) {
            conn.close();
         }
         if (conn2 != null) {
            conn2.close();
         }
      }

   }

   @Test
   public void test2PCReceiveRollback1PCOptimization() throws Exception {
      // Since both resources have some RM, TM will probably use 1PC optimization

      XAConnection conn = null;
      Connection conn2 = null;

      try {
         conn2 = cf.createConnection();
         Session sessProducer = conn2.createSession(false, Session.AUTO_ACKNOWLEDGE);
         MessageProducer prod = sessProducer.createProducer(queue1);
         Message m = sessProducer.createTextMessage("XATest1");
         prod.send(m);

         m = sessProducer.createTextMessage("XATest2");
         prod.send(m);

         conn = xacf.createXAConnection();
         conn.start();

         tm.begin();

         XASession sess = conn.createXASession();
         XAResource res = sess.getXAResource();

         XAResource res2 = new DummyXAResource();

         Transaction tx = tm.getTransaction();
         tx.enlistResource(res);
         tx.enlistResource(res2);

         MessageConsumer cons = sess.createConsumer(queue1);

         TextMessage m2 = (TextMessage) cons.receive(5000);
         Assert.assertNotNull(m2);
         Assert.assertEquals("XATest1", m2.getText());
         m2 = (TextMessage) cons.receive(5000);
         Assert.assertNotNull(m2);
         Assert.assertEquals("XATest2", m2.getText());

         tx.delistResource(res, XAResource.TMSUCCESS);
         tx.delistResource(res2, XAResource.TMSUCCESS);

         tm.rollback();

         // Message should be redelivered

         // New tx
         tm.begin();
         tx = tm.getTransaction();
         tx.enlistResource(res);
         tx.enlistResource(res2);

         TextMessage m3 = (TextMessage) cons.receive(5000);
         Assert.assertNotNull(m3);
         Assert.assertEquals("XATest1", m3.getText());
         m3 = (TextMessage) cons.receive(5000);
         Assert.assertNotNull(m3);
         Assert.assertEquals("XATest2", m3.getText());

         Assert.assertTrue(m3.getJMSRedelivered());

         tx.delistResource(res, XAResource.TMSUCCESS);
         tx.delistResource(res2, XAResource.TMSUCCESS);

         tm.commit();
      } finally {
         if (conn != null) {
            conn.close();
         }
         if (conn2 != null) {
            conn2.close();
         }
      }
   }

   @Test
   public void test2PCReceiveRollback() throws Exception {
      XAConnection conn = null;
      Connection conn2 = null;

      try {
         conn2 = cf.createConnection();
         Session sessProducer = conn2.createSession(false, Session.AUTO_ACKNOWLEDGE);
         MessageProducer prod = sessProducer.createProducer(queue1);
         Message m = sessProducer.createTextMessage("XATest1");
         prod.send(m);

         m = sessProducer.createTextMessage("XATest2");
         prod.send(m);

         conn = xacf.createXAConnection();
         conn.start();

         tm.begin();

         XASession sess = conn.createXASession();
         XAResource res = sess.getXAResource();
         // res.setForceNotSameRM(true);

         XAResource res2 = new DummyXAResource();

         Transaction tx = tm.getTransaction();
         tx.enlistResource(res);
         tx.enlistResource(res2);

         MessageConsumer cons = sess.createConsumer(queue1);

         TextMessage m2 = (TextMessage) cons.receive(5000);
         Assert.assertNotNull(m2);
         Assert.assertEquals("XATest1", m2.getText());
         m2 = (TextMessage) cons.receive(5000);
         Assert.assertNotNull(m2);
         Assert.assertEquals("XATest2", m2.getText());

         tx.delistResource(res, XAResource.TMSUCCESS);
         tx.delistResource(res2, XAResource.TMSUCCESS);

         tm.rollback();

         // Message should be redelivered

         // New tx
         tm.begin();
         tx = tm.getTransaction();
         tx.enlistResource(res);
         tx.enlistResource(res2);

         TextMessage m3 = (TextMessage) cons.receive(5000);
         Assert.assertNotNull(m3);
         Assert.assertEquals("XATest1", m3.getText());
         m3 = (TextMessage) cons.receive(5000);
         Assert.assertNotNull(m3);
         Assert.assertEquals("XATest2", m3.getText());

         Assert.assertTrue(m3.getJMSRedelivered());

         tx.delistResource(res, XAResource.TMSUCCESS);
         tx.delistResource(res2, XAResource.TMSUCCESS);

         tm.commit();

      } finally {
         if (conn != null) {
            conn.close();
         }
         if (conn2 != null) {
            conn2.close();
         }
      }

   }

   @Test
   public void test1PCSendCommit() throws Exception {
      XAConnection conn = null;
      Connection conn2 = null;

      try {
         conn = xacf.createXAConnection();

         tm.begin();

         XASession sess = conn.createXASession();
         XAResource res = sess.getXAResource();

         Transaction tx = tm.getTransaction();
         tx.enlistResource(res);

         MessageProducer prod = sess.createProducer(null);
         prod.setDeliveryMode(DeliveryMode.NON_PERSISTENT);
         Message m = sess.createTextMessage("XATest1");
         prod.send(queue1, m);
         m = sess.createTextMessage("XATest2");
         prod.send(queue1, m);

         tx.delistResource(res, XAResource.TMSUCCESS);

         tm.commit();

         conn2 = cf.createConnection();
         conn2.start();
         Session sessReceiver = conn2.createSession(false, Session.AUTO_ACKNOWLEDGE);
         MessageConsumer cons = sessReceiver.createConsumer(queue1);
         TextMessage m2 = (TextMessage) cons.receive(5000);
         Assert.assertNotNull(m2);
         Assert.assertEquals("XATest1", m2.getText());
         m2 = (TextMessage) cons.receive(5000);
         Assert.assertNotNull(m2);
         Assert.assertEquals("XATest2", m2.getText());
      } finally {
         if (conn != null) {
            conn.close();
         }
         if (conn2 != null) {
            conn2.close();
         }
      }

   }

   @Test
   public void test1PCReceiveCommit() throws Exception {
      XAConnection conn = null;
      Connection conn2 = null;

      try {
         conn2 = cf.createConnection();
         conn2.start();
         Session sessProducer = conn2.createSession(false, Session.AUTO_ACKNOWLEDGE);
         MessageProducer prod = sessProducer.createProducer(queue1);
         Message m = sessProducer.createTextMessage("XATest1");
         prod.send(m);
         m = sessProducer.createTextMessage("XATest2");
         prod.send(m);

         conn = xacf.createXAConnection();
         conn.start();

         tm.begin();

         XASession sess = conn.createXASession();
         XAResource res = sess.getXAResource();

         Transaction tx = tm.getTransaction();
         tx.enlistResource(res);

         MessageConsumer cons = sess.createConsumer(queue1);

         TextMessage m2 = (TextMessage) cons.receive(5000);

         Assert.assertNotNull(m2);
         Assert.assertEquals("XATest1", m2.getText());
         m2 = (TextMessage) cons.receive(5000);

         Assert.assertNotNull(m2);
         Assert.assertEquals("XATest2", m2.getText());

         tx.delistResource(res, XAResource.TMSUCCESS);

         tm.commit();

         // New tx
         tm.begin();
         tx = tm.getTransaction();
         tx.enlistResource(res);

         Message m3 = cons.receive(100);

         Assert.assertNull(m3);

         tx.delistResource(res, XAResource.TMSUCCESS);

         tm.commit();
      } finally {
         if (conn != null) {
            conn.close();
         }
         if (conn2 != null) {
            conn2.close();
         }
      }

   }

   @Test
   public void test1PCReceiveRollback() throws Exception {
      XAConnection conn = null;
      Connection conn2 = null;

      try {
         conn2 = cf.createConnection();
         Session sessProducer = conn2.createSession(false, Session.AUTO_ACKNOWLEDGE);
         MessageProducer prod = sessProducer.createProducer(queue1);
         Message m = sessProducer.createTextMessage("XATest1");
         prod.send(m);
         m = sessProducer.createTextMessage("XATest2");
         prod.send(m);

         conn = xacf.createXAConnection();
         conn.start();

         tm.begin();

         XASession sess = conn.createXASession();
         XAResource res = sess.getXAResource();

         Transaction tx = tm.getTransaction();
         tx.enlistResource(res);

         MessageConsumer cons = sess.createConsumer(queue1);

         TextMessage m2 = (TextMessage) cons.receive(5000);

         Assert.assertNotNull(m2);
         Assert.assertEquals("XATest1", m2.getText());

         m2 = (TextMessage) cons.receive(5000);

         Assert.assertNotNull(m2);
         Assert.assertEquals("XATest2", m2.getText());

         tx.delistResource(res, XAResource.TMSUCCESS);

         tm.rollback();

         // Message should be redelivered

         // New tx
         tm.begin();
         tx = tm.getTransaction();
         tx.enlistResource(res);

         TextMessage m3 = (TextMessage) cons.receive(5000);

         Assert.assertNotNull(m3);
         Assert.assertEquals("XATest1", m3.getText());

         m3 = (TextMessage) cons.receive(5000);

         Assert.assertNotNull(m3);
         Assert.assertEquals("XATest2", m3.getText());

         Assert.assertTrue(m3.getJMSRedelivered());

         tx.delistResource(res, XAResource.TMSUCCESS);

         tm.commit();

      } finally {
         if (conn != null) {
            conn.close();
         }
         if (conn2 != null) {
            conn2.close();
         }
      }

   }

   @Test
   public void testMultipleSessionsOneTxCommitAcknowledge1PCOptimization() throws Exception {
      XAConnection conn = null;
      Connection conn2 = null;

      // Since both resources have some RM, TM will probably use 1PC optimization

      try {
         // First send 2 messages
         conn2 = cf.createConnection();
         Session sessProducer = conn2.createSession(false, Session.AUTO_ACKNOWLEDGE);
         MessageProducer prod = sessProducer.createProducer(queue1);
         Message m = sessProducer.createTextMessage("jellyfish1");
         prod.send(m);
         m = sessProducer.createTextMessage("jellyfish2");
         prod.send(m);

         conn = xacf.createXAConnection();
         conn.start();

         tm.begin();

         // Create 2 sessions and enlist them
         XASession sess1 = conn.createXASession();
         XAResource res1 = sess1.getXAResource();
         XASession sess2 = conn.createXASession();
         XAResource res2 = sess2.getXAResource();

         Transaction tx = tm.getTransaction();
         tx.enlistResource(res1);
         tx.enlistResource(res2);

         // Receive the messages, one on each consumer
         MessageConsumer cons1 = sess1.createConsumer(queue1);
         TextMessage r1 = (TextMessage) cons1.receive(5000);

         Assert.assertNotNull(r1);
         Assert.assertEquals("jellyfish1", r1.getText());

         cons1.close();

         MessageConsumer cons2 = sess2.createConsumer(queue1);
         TextMessage r2 = (TextMessage) cons2.receive(5000);

         Assert.assertNotNull(r2);
         Assert.assertEquals("jellyfish2", r2.getText());

         tx.delistResource(res1, XAResource.TMSUCCESS);
         tx.delistResource(res2, XAResource.TMSUCCESS);

         // commit
         tm.commit();

         Session sess = conn2.createSession(false, Session.AUTO_ACKNOWLEDGE);
         MessageConsumer cons = sess.createConsumer(queue1);
         conn2.start();

         TextMessage r3 = (TextMessage) cons.receive(100);
         Assert.assertNull(r3);

      } finally {
         if (conn != null) {
            conn.close();
         }
         if (conn2 != null) {
            conn2.close();
         }
      }

   }

   @Test
   public void testMultipleSessionsOneTxCommitAcknowledge() throws Exception {
      XAConnection conn = null;
      Connection conn2 = null;

      try {
         // First send 2 messages
         conn2 = cf.createConnection();
         Session sessProducer = conn2.createSession(false, Session.AUTO_ACKNOWLEDGE);
         MessageProducer prod = sessProducer.createProducer(queue1);
         Message m = sessProducer.createTextMessage("jellyfish1");
         prod.send(m);
         m = sessProducer.createTextMessage("jellyfish2");
         prod.send(m);

         conn = xacf.createXAConnection();
         conn.start();

         tm.begin();

         // Create 2 sessions and enlist them
         XASession sess1 = conn.createXASession();
         ClientSessionInternal res1 = (ClientSessionInternal) sess1.getXAResource();
         XASession sess2 = conn.createXASession();
         ClientSessionInternal res2 = (ClientSessionInternal) sess2.getXAResource();
         res1.setForceNotSameRM(true);
         res2.setForceNotSameRM(true);

         Transaction tx = tm.getTransaction();
         tx.enlistResource(res1);
         tx.enlistResource(res2);

         // Receive the messages, one on each consumer
         MessageConsumer cons1 = sess1.createConsumer(queue1);
         TextMessage r1 = (TextMessage) cons1.receive(5000);

         Assert.assertNotNull(r1);
         Assert.assertEquals("jellyfish1", r1.getText());

         cons1.close();

         MessageConsumer cons2 = sess2.createConsumer(queue1);
         TextMessage r2 = (TextMessage) cons2.receive(5000);

         Assert.assertNotNull(r2);
         Assert.assertEquals("jellyfish2", r2.getText());

         tx.delistResource(res1, XAResource.TMSUCCESS);
         tx.delistResource(res2, XAResource.TMSUCCESS);

         // commit
         tm.commit();

         Session sess = conn2.createSession(false, Session.AUTO_ACKNOWLEDGE);
         MessageConsumer cons = sess.createConsumer(queue1);
         conn2.start();

         TextMessage r3 = (TextMessage) cons.receive(100);
         Assert.assertNull(r3);

      } finally {
         if (conn != null) {
            conn.close();
         }
         if (conn2 != null) {
            conn2.close();
         }
      }

   }

   @Test
   public void testMultipleSessionsOneTxRollbackAcknowledge1PCOptimization() throws Exception {
      XAConnection conn = null;
      Connection conn2 = null;

      // Since both resources have some RM, TM will probably use 1PC optimization

      try {
         // First send 2 messages
         conn2 = cf.createConnection();
         Session sessProducer = conn2.createSession(false, Session.AUTO_ACKNOWLEDGE);
         MessageProducer prod = sessProducer.createProducer(queue1);
         Message m = sessProducer.createTextMessage("jellyfish1");
         prod.send(m);
         m = sessProducer.createTextMessage("jellyfish2");
         prod.send(m);
         m = sessProducer.createTextMessage("jellyfish3");
         prod.send(m);
         m = sessProducer.createTextMessage("jellyfish4");
         prod.send(m);

         conn = xacf.createXAConnection();
         conn.start();

         tm.begin();

         // Create 2 sessions and enlist them
         XASession sess1 = conn.createXASession();
         ClientSessionInternal res1 = (ClientSessionInternal) sess1.getXAResource();
         XASession sess2 = conn.createXASession();
         ClientSessionInternal res2 = (ClientSessionInternal) sess2.getXAResource();

         Transaction tx = tm.getTransaction();
         tx.enlistResource(res1);
         tx.enlistResource(res2);

         // Receive the messages, two on each consumer
         MessageConsumer cons1 = sess1.createConsumer(queue1);
         TextMessage r1 = (TextMessage) cons1.receive(5000);

         Assert.assertNotNull(r1);
         Assert.assertEquals("jellyfish1", r1.getText());

         r1 = (TextMessage) cons1.receive(5000);

         Assert.assertNotNull(r1);
         Assert.assertEquals("jellyfish2", r1.getText());

         cons1.close();

         MessageConsumer cons2 = sess2.createConsumer(queue1);
         TextMessage r2 = (TextMessage) cons2.receive(5000);

         Assert.assertNotNull(r2);
         Assert.assertEquals("jellyfish3", r2.getText());

         r2 = (TextMessage) cons2.receive(5000);

         Assert.assertNotNull(r2);
         Assert.assertEquals("jellyfish4", r2.getText());

         cons2.close();

         // rollback

         tx.delistResource(res1, XAResource.TMSUCCESS);
         tx.delistResource(res2, XAResource.TMSUCCESS);

         tm.rollback();

         // Rollback causes cancel which is asynch
         Thread.sleep(1000);

         // We cannot assume anything about the order in which the transaction manager rollsback
         // the sessions - this is implementation dependent

         Session sess = conn2.createSession(false, Session.AUTO_ACKNOWLEDGE);
         MessageConsumer cons = sess.createConsumer(queue1);
         conn2.start();

         TextMessage r = (TextMessage) cons.receive(5000);
         Assert.assertNotNull(r);

         boolean session1First = false;

         if (r.getText().equals("jellyfish1")) {
            session1First = true;
         } else if (r.getText().equals("jellyfish3")) {
            session1First = false;
         } else {
            Assert.fail("Unexpected message");
         }

         if (session1First) {
            r = (TextMessage) cons.receive(5000);

            Assert.assertNotNull(r);

            Assert.assertEquals("jellyfish2", r.getText());

            r = (TextMessage) cons.receive(5000);

            Assert.assertNotNull(r);

            Assert.assertEquals("jellyfish3", r.getText());

            r = (TextMessage) cons.receive(5000);

            Assert.assertNotNull(r);

            Assert.assertEquals("jellyfish4", r.getText());

         } else {
            r = (TextMessage) cons.receive(5000);

            Assert.assertNotNull(r);

            Assert.assertEquals("jellyfish4", r.getText());

            r = (TextMessage) cons.receive(5000);

            Assert.assertNotNull(r);

            Assert.assertEquals("jellyfish1", r.getText());

            r = (TextMessage) cons.receive(5000);

            Assert.assertNotNull(r);

            Assert.assertEquals("jellyfish2", r.getText());
         }

         r = (TextMessage) cons.receive(100);

         Assert.assertNull(r);

      } finally {
         if (conn != null) {
            conn.close();
         }
         if (conn2 != null) {
            conn2.close();
         }
      }

   }

   @Test
   public void testMultipleSessionsOneTxRollbackAcknowledge() throws Exception {
      XAConnection conn = null;
      Connection conn2 = null;

      try {
         // First send 2 messages
         conn2 = cf.createConnection();
         Session sessProducer = conn2.createSession(false, Session.AUTO_ACKNOWLEDGE);
         MessageProducer prod = sessProducer.createProducer(queue1);
         Message m = sessProducer.createTextMessage("jellyfish1");
         prod.send(m);
         m = sessProducer.createTextMessage("jellyfish2");
         prod.send(m);
         m = sessProducer.createTextMessage("jellyfish3");
         prod.send(m);
         m = sessProducer.createTextMessage("jellyfish4");
         prod.send(m);

         conn = xacf.createXAConnection();
         conn.start();

         tm.begin();

         // Create 2 sessions and enlist them
         XASession sess1 = conn.createXASession();
         ClientSessionInternal res1 = (ClientSessionInternal) sess1.getXAResource();
         XASession sess2 = conn.createXASession();
         ClientSessionInternal res2 = (ClientSessionInternal) sess2.getXAResource();
         res1.setForceNotSameRM(true);
         res2.setForceNotSameRM(true);

         Transaction tx = tm.getTransaction();
         tx.enlistResource(res1);
         tx.enlistResource(res2);

         // Receive the messages, two on each consumer
         MessageConsumer cons1 = sess1.createConsumer(queue1);
         TextMessage r1 = (TextMessage) cons1.receive(5000);

         Assert.assertNotNull(r1);
         Assert.assertEquals("jellyfish1", r1.getText());

         r1 = (TextMessage) cons1.receive(5000);

         Assert.assertNotNull(r1);
         Assert.assertEquals("jellyfish2", r1.getText());

         cons1.close();

         // Cancel is asynch
         Thread.sleep(500);

         MessageConsumer cons2 = sess2.createConsumer(queue1);
         TextMessage r2 = (TextMessage) cons2.receive(5000);

         Assert.assertNotNull(r2);
         Assert.assertEquals("jellyfish3", r2.getText());

         r2 = (TextMessage) cons2.receive(5000);

         Assert.assertNotNull(r2);
         Assert.assertEquals("jellyfish4", r2.getText());

         // rollback

         cons2.close();

         tx.delistResource(res1, XAResource.TMSUCCESS);
         tx.delistResource(res2, XAResource.TMSUCCESS);

         tm.rollback();

         // Rollback causes cancel which is asynch
         Thread.sleep(1000);

         // We cannot assume anything about the order in which the transaction manager rollsback
         // the sessions - this is implementation dependent

         Session sess = conn2.createSession(false, Session.AUTO_ACKNOWLEDGE);
         MessageConsumer cons = sess.createConsumer(queue1);
         conn2.start();

         TextMessage r = (TextMessage) cons.receive(5000);
         Assert.assertNotNull(r);

         boolean session1First = false;

         if (r.getText().equals("jellyfish1")) {
            session1First = true;
         } else if (r.getText().equals("jellyfish3")) {
            session1First = false;
         } else {
            Assert.fail("Unexpected message");
         }

         if (session1First) {
            r = (TextMessage) cons.receive(5000);

            Assert.assertNotNull(r);

            Assert.assertEquals("jellyfish2", r.getText());

            r = (TextMessage) cons.receive(5000);

            Assert.assertNotNull(r);

            Assert.assertEquals("jellyfish3", r.getText());

            r = (TextMessage) cons.receive(5000);

            Assert.assertNotNull(r);

            Assert.assertEquals("jellyfish4", r.getText());

         } else {
            r = (TextMessage) cons.receive(5000);

            Assert.assertNotNull(r);

            Assert.assertEquals("jellyfish4", r.getText());

            r = (TextMessage) cons.receive(5000);

            Assert.assertNotNull(r);

            Assert.assertEquals("jellyfish1", r.getText());

            r = (TextMessage) cons.receive(5000);

            Assert.assertNotNull(r);

            Assert.assertEquals("jellyfish2", r.getText());
         }

         r = (TextMessage) cons.receive(100);

         Assert.assertNull(r);
      } finally {
         if (conn != null) {
            conn.close();
         }
         if (conn2 != null) {
            conn2.close();
         }
      }
   }

   @Test
   public void testMultipleSessionsOneTxRollbackAcknowledgeForceFailureInCommit() throws Exception {
      XAConnection conn = null;
      Connection conn2 = null;

      try {
         // First send 4 messages
         conn2 = cf.createConnection();
         Session sessProducer = conn2.createSession(false, Session.AUTO_ACKNOWLEDGE);
         MessageProducer prod = sessProducer.createProducer(queue1);

         Message m = sessProducer.createTextMessage("jellyfish1");
         prod.send(m);
         m = sessProducer.createTextMessage("jellyfish2");
         prod.send(m);
         m = sessProducer.createTextMessage("jellyfish3");
         prod.send(m);
         m = sessProducer.createTextMessage("jellyfish4");
         prod.send(m);

         conn = xacf.createXAConnection();
         conn.start();

         tm.begin();

         XASession sess1 = conn.createXASession();
         XAResource res1 = sess1.getXAResource();
         DummyXAResource res2 = new DummyXAResource(true);

         Transaction tx = tm.getTransaction();
         tx.enlistResource(res1);
         tx.enlistResource(res2);

         MessageConsumer cons1 = sess1.createConsumer(queue1);
         TextMessage r1 = (TextMessage) cons1.receive(5000);

         Assert.assertNotNull(r1);
         Assert.assertEquals("jellyfish1", r1.getText());

         r1 = (TextMessage) cons1.receive(5000);

         Assert.assertNotNull(r1);
         Assert.assertEquals("jellyfish2", r1.getText());

         r1 = (TextMessage) cons1.receive(5000);

         Assert.assertNotNull(r1);
         Assert.assertEquals("jellyfish3", r1.getText());

         r1 = (TextMessage) cons1.receive(5000);

         Assert.assertNotNull(r1);
         Assert.assertEquals("jellyfish4", r1.getText());

         r1 = (TextMessage) cons1.receive(100);

         Assert.assertNull(r1);

         cons1.close();

         // try and commit - and we're going to make the dummyxaresource throw an exception on commit,
         // which should cause rollback to be called on the other resource

         tx.delistResource(res1, XAResource.TMSUCCESS);
         tx.delistResource(res2, XAResource.TMSUCCESS);

         // rollback will cause an attempt to deliver messages locally to the original consumers.
         // the original consumer has closed, so it will cancelled to the server
         // the server cancel is asynch, so we need to sleep for a bit to make sure it completes
         ExtrasTestLogger.LOGGER.trace("Forcing failure");
         try {
            tm.commit();
            Assert.fail("should not get here");
         } catch (Exception e) {
            // We should expect this
         }

         Thread.sleep(1000);

         Session sess = conn2.createSession(false, Session.AUTO_ACKNOWLEDGE);
         MessageConsumer cons = sess.createConsumer(queue1);
         conn2.start();

         TextMessage r = (TextMessage) cons.receive(5000);

         Assert.assertNotNull(r);

         Assert.assertEquals("jellyfish1", r.getText());

         r = (TextMessage) cons.receive(5000);

         Assert.assertNotNull(r);

         Assert.assertEquals("jellyfish2", r.getText());

         r = (TextMessage) cons.receive(5000);

         Assert.assertNotNull(r);

         Assert.assertEquals("jellyfish3", r.getText());

         r = (TextMessage) cons.receive(5000);

         Assert.assertNotNull(r);

         Assert.assertEquals("jellyfish4", r.getText());

         r = (TextMessage) cons.receive(100);

         Assert.assertNull(r);
      } finally {
         if (conn != null) {
            conn.close();
         }
         if (conn2 != null) {
            conn2.close();
         }
      }

   }

   @Test
   public void testMultipleSessionsOneTxCommitSend1PCOptimization() throws Exception {
      // Since both resources have some RM, TM will probably use 1PC optimization

      XAConnection conn = null;

      Connection conn2 = null;

      try {
         conn = xacf.createXAConnection();
         conn.start();

         tm.begin();

         // Create 2 sessions and enlist them
         XASession sess1 = conn.createXASession();
         XAResource res1 = sess1.getXAResource();
         XASession sess2 = conn.createXASession();
         XAResource res2 = sess2.getXAResource();

         Transaction tx = tm.getTransaction();
         tx.enlistResource(res1);
         tx.enlistResource(res2);

         // Send 2 messages - one from each session

         MessageProducer prod1 = sess1.createProducer(queue1);
         MessageProducer prod2 = sess2.createProducer(queue1);

         prod1.send(sess1.createTextMessage("echidna1"));
         prod2.send(sess2.createTextMessage("echidna2"));

         tx.delistResource(res1, XAResource.TMSUCCESS);
         tx.delistResource(res2, XAResource.TMSUCCESS);

         // commit
         tm.commit();

         // Messages should be in queue

         conn2 = cf.createConnection();
         Session sess = conn2.createSession(false, Session.AUTO_ACKNOWLEDGE);
         MessageConsumer cons = sess.createConsumer(queue1);
         conn2.start();

         TextMessage r1 = (TextMessage) cons.receive(5000);
         Assert.assertNotNull(r1);
         Assert.assertEquals("echidna1", r1.getText());

         TextMessage r2 = (TextMessage) cons.receive(5000);
         Assert.assertNotNull(r2);
         Assert.assertEquals("echidna2", r2.getText());

      } finally {
         if (conn != null) {
            conn.close();
         }
         if (conn2 != null) {
            conn2.close();
         }
      }
   }

   @Test
   public void testMultipleSessionsOneTxCommitSend() throws Exception {
      // Since both resources have some RM, TM will probably use 1PC optimization

      XAConnection conn = null;

      Connection conn2 = null;

      try {

         conn = xacf.createXAConnection();
         conn.start();

         tm.begin();

         // Create 2 sessions and enlist them
         XASession sess1 = conn.createXASession();
         ClientSessionInternal res1 = (ClientSessionInternal) sess1.getXAResource();
         XASession sess2 = conn.createXASession();
         ClientSessionInternal res2 = (ClientSessionInternal) sess2.getXAResource();
         res1.setForceNotSameRM(true);
         res2.setForceNotSameRM(true);

         Transaction tx = tm.getTransaction();
         tx.enlistResource(res1);
         tx.enlistResource(res2);

         // Send 2 messages - one from each session

         MessageProducer prod1 = sess1.createProducer(queue1);
         MessageProducer prod2 = sess2.createProducer(queue1);

         prod1.send(sess1.createTextMessage("echidna1"));
         prod2.send(sess2.createTextMessage("echidna2"));

         tx.delistResource(res1, XAResource.TMSUCCESS);
         tx.delistResource(res2, XAResource.TMSUCCESS);

         // commit
         tm.commit();

         // Messages should be in queue

         conn2 = cf.createConnection();
         Session sess = conn2.createSession(false, Session.AUTO_ACKNOWLEDGE);
         MessageConsumer cons = sess.createConsumer(queue1);
         conn2.start();

         TextMessage r1 = (TextMessage) cons.receive(5000);
         Assert.assertNotNull(r1);
         Assert.assertEquals("echidna1", r1.getText());

         TextMessage r2 = (TextMessage) cons.receive(5000);
         Assert.assertNotNull(r2);
         Assert.assertEquals("echidna2", r2.getText());

      } finally {
         if (conn != null) {
            conn.close();
         }
         if (conn2 != null) {
            conn2.close();
         }

      }

   }

   @Test
   public void testMultipleSessionsOneTxRollbackSend1PCOptimization() throws Exception {
      // Since both resources have some RM, TM will probably use 1PC optimization

      XAConnection conn = null;

      Connection conn2 = null;

      try {
         conn = xacf.createXAConnection();
         conn.start();

         tm.begin();

         // Create 2 sessions and enlist them
         XASession sess1 = conn.createXASession();
         XAResource res1 = sess1.getXAResource();
         XASession sess2 = conn.createXASession();
         XAResource res2 = sess2.getXAResource();

         Transaction tx = tm.getTransaction();
         tx.enlistResource(res1);
         tx.enlistResource(res2);

         // Send 2 messages - one from each session

         MessageProducer prod1 = sess1.createProducer(queue1);
         MessageProducer prod2 = sess2.createProducer(queue1);

         prod1.send(sess1.createTextMessage("echidna1"));
         prod2.send(sess2.createTextMessage("echidna2"));

         tx.delistResource(res1, XAResource.TMSUCCESS);
         tx.delistResource(res2, XAResource.TMSUCCESS);

         // rollback
         tm.rollback();

         // Messages should not be in queue

         conn2 = cf.createConnection();
         Session sess = conn2.createSession(false, Session.AUTO_ACKNOWLEDGE);
         MessageConsumer cons = sess.createConsumer(queue1);
         conn2.start();

         TextMessage r1 = (TextMessage) cons.receive(100);
         Assert.assertNull(r1);

      } finally {
         if (conn != null) {
            conn.close();
         }
         if (conn2 != null) {
            conn2.close();
         }
      }
   }

   @Test
   public void testMultipleSessionsOneTxRollbackSend() throws Exception {
      XAConnection conn = null;

      Connection conn2 = null;

      try {

         conn = xacf.createXAConnection();
         conn.start();

         tm.begin();

         // Create 2 sessions and enlist them
         XASession sess1 = conn.createXASession();
         ClientSessionInternal res1 = (ClientSessionInternal) sess1.getXAResource();
         XASession sess2 = conn.createXASession();
         ClientSessionInternal res2 = (ClientSessionInternal) sess2.getXAResource();
         res1.setForceNotSameRM(true);
         res2.setForceNotSameRM(true);

         Transaction tx = tm.getTransaction();
         tx.enlistResource(res1);
         tx.enlistResource(res2);

         // Send 2 messages - one from each session

         MessageProducer prod1 = sess1.createProducer(queue1);
         MessageProducer prod2 = sess2.createProducer(queue1);

         prod1.send(sess1.createTextMessage("echidna1"));
         prod2.send(sess2.createTextMessage("echidna2"));

         tx.delistResource(res1, XAResource.TMSUCCESS);
         tx.delistResource(res2, XAResource.TMSUCCESS);

         // rollback
         tm.rollback();

         // Messages should not be in queue

         conn2 = cf.createConnection();
         Session sess = conn2.createSession(false, Session.AUTO_ACKNOWLEDGE);
         MessageConsumer cons = sess.createConsumer(queue1);
         conn2.start();

         TextMessage r1 = (TextMessage) cons.receive(100);
         Assert.assertNull(r1);
      } finally {
         if (conn != null) {
            conn.close();
         }
         if (conn2 != null) {
            conn2.close();
         }
      }
   }

   @Test
   public void testOneSessionTwoTransactionsCommitAcknowledge() throws Exception {
      XAConnection conn = null;

      Connection conn2 = null;

      try {
         // First send 2 messages
         conn2 = cf.createConnection();
         Session sessProducer = conn2.createSession(false, Session.AUTO_ACKNOWLEDGE);
         MessageProducer prod = sessProducer.createProducer(queue1);
         Message m = sessProducer.createTextMessage("jellyfish1");
         prod.send(m);
         m = sessProducer.createTextMessage("jellyfish2");
         prod.send(m);

         conn = xacf.createXAConnection();

         // Create a session
         XASession sess1 = conn.createXASession();
         XAResource res1 = sess1.getXAResource();

         conn.start();
         MessageConsumer cons1 = sess1.createConsumer(queue1);

         tm.begin();

         Transaction tx1 = tm.getTransaction();
         tx1.enlistResource(res1);

         // Receive one message in one tx

         TextMessage r1 = (TextMessage) cons1.receive(5000);
         Assert.assertNotNull(r1);
         Assert.assertEquals("jellyfish1", r1.getText());

         tx1.delistResource(res1, XAResource.TMSUCCESS);

         // suspend the tx
         Transaction suspended = tm.suspend();

         tm.begin();

         Transaction tx2 = tm.getTransaction();
         tx2.enlistResource(res1);

         // Receive 2nd message in a different tx
         TextMessage r2 = (TextMessage) cons1.receive(5000);
         Assert.assertNotNull(r2);
         Assert.assertEquals("jellyfish2", r2.getText());

         tx2.delistResource(res1, XAResource.TMSUCCESS);

         // commit this transaction
         tm.commit();

         // verify that no messages are available
         conn2.close();
         conn2 = cf.createConnection();
         Session sess = conn2.createSession(false, Session.AUTO_ACKNOWLEDGE);
         conn2.start();
         MessageConsumer cons = sess.createConsumer(queue1);
         TextMessage r3 = (TextMessage) cons.receive(100);
         Assert.assertNull(r3);

         // now resume the first tx and then commit it
         tm.resume(suspended);

         tm.commit();
      } finally {
         if (conn != null) {
            conn.close();
         }
         if (conn2 != null) {
            conn2.close();
         }
      }
   }

   @Test
   public void testOneSessionTwoTransactionsRollbackAcknowledge() throws Exception {
      XAConnection conn = null;

      Connection conn2 = null;

      try {
         // First send 2 messages
         conn2 = cf.createConnection();
         Session sessProducer = conn2.createSession(false, Session.AUTO_ACKNOWLEDGE);
         MessageProducer prod = sessProducer.createProducer(queue1);
         Message m = sessProducer.createTextMessage("jellyfish1");
         prod.send(m);
         m = sessProducer.createTextMessage("jellyfish2");
         prod.send(m);

         conn = xacf.createXAConnection();

         // Create a session
         XASession sess1 = conn.createXASession();
         XAResource res1 = sess1.getXAResource();

         conn.start();
         MessageConsumer cons1 = sess1.createConsumer(queue1);

         tm.begin();

         Transaction tx1 = tm.getTransaction();
         tx1.enlistResource(res1);

         // Receive one message in one tx

         TextMessage r1 = (TextMessage) cons1.receive(5000);
         Assert.assertNotNull(r1);
         Assert.assertEquals("jellyfish1", r1.getText());

         tx1.delistResource(res1, XAResource.TMSUCCESS);

         // suspend the tx
         Transaction suspended = tm.suspend();

         tm.begin();

         Transaction tx2 = tm.getTransaction();
         tx2.enlistResource(res1);

         // Receive 2nd message in a different tx
         TextMessage r2 = (TextMessage) cons1.receive(5000);
         Assert.assertNotNull(r2);
         Assert.assertEquals("jellyfish2", r2.getText());

         cons1.close();

         tx2.delistResource(res1, XAResource.TMSUCCESS);

         // rollback this transaction
         tm.rollback();

         // verify that second message is available
         conn2.close();
         conn2 = cf.createConnection();
         Session sess = conn2.createSession(false, Session.AUTO_ACKNOWLEDGE);
         conn2.start();
         MessageConsumer cons = sess.createConsumer(queue1);

         TextMessage r3 = (TextMessage) cons.receive(5000);

         Assert.assertNotNull(r3);
         Assert.assertEquals("jellyfish2", r3.getText());
         r3 = (TextMessage) cons.receive(100);
         Assert.assertNull(r3);

         // rollback the other tx
         tm.resume(suspended);
         tm.rollback();

         // Verify the first message is now available
         r3 = (TextMessage) cons.receive(5000);
         Assert.assertNotNull(r3);
         Assert.assertEquals("jellyfish1", r3.getText());
         r3 = (TextMessage) cons.receive(100);
         Assert.assertNull(r3);

      } finally {
         if (conn != null) {
            conn.close();
         }
         if (conn2 != null) {
            conn2.close();
         }

      }

   }

   @Test
   public void testOneSessionTwoTransactionsCommitSend() throws Exception {
      XAConnection conn = null;

      Connection conn2 = null;

      try {
         conn = xacf.createXAConnection();

         // Create a session
         XASession sess1 = conn.createXASession();
         XAResource res1 = sess1.getXAResource();

         MessageProducer prod1 = sess1.createProducer(queue1);

         tm.begin();

         Transaction tx1 = tm.getTransaction();
         tx1.enlistResource(res1);

         // Send a message
         prod1.send(sess1.createTextMessage("kangaroo1"));

         tx1.delistResource(res1, XAResource.TMSUCCESS);

         // suspend the tx
         Transaction suspended = tm.suspend();

         tm.begin();

         // Send another message in another tx using the same session
         Transaction tx2 = tm.getTransaction();
         tx2.enlistResource(res1);

         // Send a message
         prod1.send(sess1.createTextMessage("kangaroo2"));

         tx2.delistResource(res1, XAResource.TMSUCCESS);

         // commit this transaction
         tm.commit();

         // verify only kangaroo2 message is sent
         conn2 = cf.createConnection();
         Session sess = conn2.createSession(false, Session.AUTO_ACKNOWLEDGE);
         conn2.start();
         MessageConsumer cons = sess.createConsumer(queue1);
         TextMessage r1 = (TextMessage) cons.receive(5000);
         Assert.assertNotNull(r1);
         Assert.assertEquals("kangaroo2", r1.getText());
         TextMessage r2 = (TextMessage) cons.receive(100);
         Assert.assertNull(r2);

         // now resume the first tx and then commit it
         tm.resume(suspended);

         tm.commit();

         // verify that the first text message is received
         TextMessage r3 = (TextMessage) cons.receive(5000);
         Assert.assertNotNull(r3);
         Assert.assertEquals("kangaroo1", r3.getText());

      } finally {
         if (conn != null) {
            conn.close();
         }
         if (conn2 != null) {
            conn2.close();
         }

      }

   }

   @Test
   public void testIsSamRM() throws Exception {
      XAConnection conn = null;

      conn = xacf.createXAConnection();

      // Create a session
      XASession sess1 = conn.createXASession();
      XAResource res1 = sess1.getXAResource();

      // Create a session
      XASession sess2 = conn.createXASession();
      XAResource res2 = sess2.getXAResource();

      Assert.assertTrue(res1.isSameRM(res2));
   }

   static class DummyXAResource implements XAResource {

      boolean failOnPrepare;

      DummyXAResource() {
      }

      DummyXAResource(final boolean failOnPrepare) {
         this.failOnPrepare = failOnPrepare;
      }

      @Override
      public void commit(final Xid arg0, final boolean arg1) throws XAException {
      }

      @Override
      public void end(final Xid arg0, final int arg1) throws XAException {
      }

      @Override
      public void forget(final Xid arg0) throws XAException {
      }

      @Override
      public int getTransactionTimeout() throws XAException {
         return 0;
      }

      @Override
      public boolean isSameRM(final XAResource arg0) throws XAException {
         return false;
      }

      @Override
      public int prepare(final Xid arg0) throws XAException {
         if (failOnPrepare) {
            throw new XAException(XAException.XAER_RMFAIL);
         }
         return XAResource.XA_OK;
      }

      @Override
      public Xid[] recover(final int arg0) throws XAException {
         return null;
      }

      @Override
      public void rollback(final Xid arg0) throws XAException {
      }

      @Override
      public boolean setTransactionTimeout(final int arg0) throws XAException {
         return false;
      }

      @Override
      public void start(final Xid arg0, final int arg1) throws XAException {

      }

   }

}