public async Task CreatePublishAndConsume()
        {
            var connectionFactory = CreateConnectionFactory();

            using (var queueClient = new RabbitMQClient(connectionFactory))
            {
                var queueName = $"IntegratedTestQueue_{Guid.NewGuid()}";

                queueClient.EnsureQueueExists(queueName, autoDelete: true);

                queueClient.Publish("", queueName, "TestValue123");

                var receivedMessage = "";

                var worker = await SimpleMessageProcessingWorker <string> .CreateAndStartAsync(queueClient, queueName,
                                                                                               message => DoSomething(message, out receivedMessage), CancellationToken.None);

                const int timeLimit = 10000;

                var elapsedTime = 0;

                while (receivedMessage == "" && elapsedTime < timeLimit)
                {
                    await Task.Delay(100);

                    elapsedTime += 100;
                }

                worker.Stop();

                receivedMessage.ShouldBe("TestValue123");
            }
        }
        public async Task ConsumerScaling()
        {
            var connectionFactory = CreateConnectionFactory();

            int messageAmount = 30000;

            var messages = GenerateMessages(messageAmount);

            using (var queueClient = new RabbitMQClient(connectionFactory))
            {
                var queueName = $"IntegratedTestQueue_{Guid.NewGuid()}";

                queueClient.EnsureQueueExists(queueName);

                queueClient.BatchPublish("", queueName, messages);

                var worker = await SimpleMessageProcessingWorker <string> .CreateAndStartAsync(queueClient, queueName,
                                                                                               async message => await Task.Delay(20), CancellationToken.None, new ConsumerCountManager(4, 50, 1000, 2000));

                const int timeLimit = 1200000;

                var elapsedTime = 0;

                while (elapsedTime < timeLimit)
                {
                    await Task.Delay(100);

                    elapsedTime += 100;

                    if (elapsedTime % 1000 == 0 && messageAmount < 70000)
                    {
                        messages = GenerateMessages(1000);
                        queueClient.BatchPublish("", queueName, messages);
                        messageAmount += 1000;
                    }
                }

                worker.Stop();

                queueClient.QueueDelete(queueName);
            }
        }
        public async Task CreateBatchPublishAndConsume()
        {
            var connectionFactory = CreateConnectionFactory();

            const int messageAmount = 100;

            var messages = GenerateMessages(messageAmount);

            using (var queueClient = new RabbitMQClient(connectionFactory))
            {
                var queueName = $"IntegratedTestQueue_{Guid.NewGuid()}";

                queueClient.EnsureQueueExists(queueName);

                queueClient.BatchPublish("", queueName, messages);

                var receivedMessages = new ConcurrentBag <string>();

                var worker = await SimpleMessageProcessingWorker <string> .CreateAndStartAsync(queueClient, queueName,
                                                                                               message => BatchDoSomething(message, receivedMessages), CancellationToken.None);

                const int timeLimit = 10000;

                var elapsedTime = 0;

                while (receivedMessages.Count < messageAmount && elapsedTime < timeLimit)
                {
                    await Task.Delay(100);

                    elapsedTime += 100;
                }

                worker.Stop();

                queueClient.QueueDelete(queueName);

                receivedMessages.Count.ShouldBe(messages.Count);
                receivedMessages.ShouldBeSubsetOf(messages);
            }
        }