Apache.NMS.ActiveMQ.Test.AMQRedeliveryPolicyTest.TestNornalRedeliveryPolicyDelaysDeliveryOnRollback C# (CSharp) Method

        public void TestNornalRedeliveryPolicyDelaysDeliveryOnRollback()
        {
            using(Connection connection = (Connection) CreateConnection())
            {
                IRedeliveryPolicy policy = connection.RedeliveryPolicy;
                policy.InitialRedeliveryDelay = 500;
                policy.UseExponentialBackOff = false;

                connection.Start();
                ISession session = connection.CreateSession(AcknowledgementMode.Transactional);
                IDestination destination = session.CreateTemporaryQueue();

                IMessageProducer producer = session.CreateProducer(destination);
                IMessageConsumer consumer = session.CreateConsumer(destination);

                // Send the messages
                producer.Send(session.CreateTextMessage("1st"));
                producer.Send(session.CreateTextMessage("2nd"));
                session.Commit();

                ITextMessage m;
                m = (ITextMessage)consumer.Receive(TimeSpan.FromMilliseconds(1000));
                Assert.IsNotNull(m);
                Assert.AreEqual("1st", m.Text);
                session.Rollback();

                // No delay on first Rollback..
                m = (ITextMessage)consumer.Receive(TimeSpan.FromMilliseconds(100));
                Assert.IsNotNull(m);
                session.Rollback();

                // Show subsequent re-delivery delay is incrementing.
                m = (ITextMessage)consumer.Receive(TimeSpan.FromMilliseconds(100));
                Assert.IsNull(m);
                m = (ITextMessage)consumer.Receive(TimeSpan.FromMilliseconds(700));
                Assert.IsNotNull(m);
                Assert.AreEqual("1st", m.Text);
                session.Rollback();

                // The message gets redelivered after 500 ms every time since
                // we are not using exponential backoff.
                m = (ITextMessage)consumer.Receive(TimeSpan.FromMilliseconds(100));
                Assert.IsNull(m);
                m = (ITextMessage)consumer.Receive(TimeSpan.FromMilliseconds(700));
                Assert.IsNotNull(m);
                Assert.AreEqual("1st", m.Text);
            }
        }