@Test(timeout = 30000)
  public void testSessionRecoverPassthrough() throws Exception {
    JmsConnectionFactory factory = new JmsConnectionFactory("failover:(mock://localhost)");

    Connection connection = factory.createConnection();
    connection.start();
    Session session = connection.createSession(false, Session.CLIENT_ACKNOWLEDGE);
    session.recover();
    connection.close();

    assertEquals(1, mockPeer.getContextStats().getRecoverCalls());
  }
  /**
   * test messages are acknowledged and recovered properly
   *
   * @throws Exception
   */
  public void testClientAcknowledge() throws Exception {
    Destination destination = createDestination(getClass().getName());
    Connection connection = createConnection();
    connection.setClientID(idGen.generateId());
    connection.start();
    Session consumerSession = connection.createSession(false, Session.CLIENT_ACKNOWLEDGE);
    MessageConsumer consumer = consumerSession.createConsumer(destination);
    Session producerSession = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
    MessageProducer producer = producerSession.createProducer(destination);
    producer.setDeliveryMode(deliveryMode);

    // send some messages

    TextMessage sent1 = producerSession.createTextMessage();
    sent1.setText("msg1");
    sent1.setStringProperty("str", "1");
    producer.send(sent1);

    TextMessage sent2 = producerSession.createTextMessage();
    sent2.setText("msg2");
    sent2.setStringProperty("str", "2");
    producer.send(sent2);

    TextMessage sent3 = producerSession.createTextMessage();
    sent2.setText("msg3");
    sent2.setStringProperty("str", "3");
    producer.send(sent3);

    TextMessage msgTest = (TextMessage) consumer.receive(RECEIVE_TIMEOUT);
    System.out.println("msgTest::" + msgTest + " // " + msgTest.getText());
    TextMessage rec2 = (TextMessage) consumer.receive(RECEIVE_TIMEOUT);
    System.out.println("msgTest::" + rec2 + " // " + rec2.getText());
    assertNull(consumer.receiveNoWait());

    // ack rec2
    rec2.acknowledge();

    TextMessage sent4 = producerSession.createTextMessage();
    sent4.setText("msg4");
    producer.send(sent4);

    TextMessage rec4 = (TextMessage) consumer.receive(RECEIVE_TIMEOUT);
    assertTrue(rec4.equals(sent4));
    consumerSession.recover();
    rec4 = (TextMessage) consumer.receive(RECEIVE_TIMEOUT);
    assertTrue(rec4.equals(sent4));
    assertTrue(rec4.getJMSRedelivered());
    rec4.acknowledge();
    connection.close();
  }