public void TestMessageListener()
        {
            var mockConnectionFactory = new Mock <ConnectionFactory>();
            var mockConnection        = new Mock <IConnection>();
            var onlyChannel           = new Mock <IModel>();

            onlyChannel.Setup(m => m.IsOpen).Returns(true);
            onlyChannel.Setup(m => m.CreateBasicProperties()).Returns(() => new BasicProperties());

            var cachingConnectionFactory = new CachingConnectionFactory(mockConnectionFactory.Object);

            mockConnectionFactory.Setup(m => m.CreateConnection()).Returns(mockConnection.Object);
            mockConnection.Setup(m => m.IsOpen).Returns(true);

            var tooManyChannels = new AtomicReference <Exception>();
            var done            = false;

            mockConnection.Setup(m => m.CreateModel()).Returns(
                () =>
            {
                if (!done)
                {
                    done = true;
                    return(onlyChannel.Object);
                }

                tooManyChannels.LazySet(new Exception("More than one channel requested"));
                var channel = new Mock <IModel>();
                channel.Setup(m => m.IsOpen).Returns(true);
                return(channel.Object);
            });

            var consumer = new BlockingCollection <IBasicConsumer>(1);

            onlyChannel.Setup(m => m.BasicConsume(It.IsAny <string>(), It.IsAny <bool>(), It.IsAny <IBasicConsumer>())).Callback <string, bool, IBasicConsumer>(
                (a1, a2, a3) => consumer.Add(a3));

            var commitLatch = new CountdownEvent(1);

            onlyChannel.Setup(m => m.TxCommit()).Callback(
                () =>
            {
                if (commitLatch.CurrentCount > 0)
                {
                    commitLatch.Signal();
                }
            });

            var latch     = new CountdownEvent(1);
            var container = new SimpleMessageListenerContainer(cachingConnectionFactory);

            container.MessageListener = new Action <Message>(
                message =>
            {
                var rabbitTemplate = new RabbitTemplate(cachingConnectionFactory);
                rabbitTemplate.ChannelTransacted = true;

                // should use same channel as container
                rabbitTemplate.ConvertAndSend("foo", "bar", "baz");
                if (latch.CurrentCount > 0)
                {
                    latch.Signal();
                }
            });

            container.QueueNames         = new[] { "queue" };
            container.ChannelTransacted  = true;
            container.ShutdownTimeout    = 100;
            container.TransactionManager = DummyTxManager.Instance();
            container.AfterPropertiesSet();
            container.Start();

            IBasicConsumer currentConsumer;

            consumer.TryTake(out currentConsumer, this.timeout);
            Assert.IsNotNull(currentConsumer, "Timed out getting consumer.");
            currentConsumer.HandleBasicDeliver("qux", 1, false, "foo", "bar", new BasicProperties(), new byte[] { 0 });

            Assert.IsTrue(latch.Wait(new TimeSpan(0, 0, 10)));

            var e = tooManyChannels.Value;

            if (e != null)
            {
                throw e;
            }

            mockConnection.Verify(m => m.CreateModel(), Times.Once());
            Assert.True(commitLatch.Wait(new TimeSpan(0, 0, 10)));
            onlyChannel.Verify(m => m.TxCommit(), Times.Once());
            onlyChannel.Verify(m => m.BasicPublish(It.IsAny <string>(), It.IsAny <string>(), It.IsAny <bool>(), It.IsAny <bool>(), It.IsAny <IBasicProperties>(), It.IsAny <byte[]>()), Times.Once());

            // verify close() was never called on the channel
            var cachedChannelsTransactionalField = typeof(CachingConnectionFactory).GetField("cachedChannelsTransactional", BindingFlags.NonPublic | BindingFlags.Instance);
            var channels = (LinkedList <IChannelProxy>)cachedChannelsTransactionalField.GetValue(cachingConnectionFactory);

            Assert.AreEqual(0, channels.Count);

            container.Stop();
            container.Dispose();
            container = null;
        }