public void SqsAckFlow_default_stream_should_react_on_Ignore_commands()
{
var publisher = this.CreatePublisherProbe <MessageAction>();
var subscriber = this.CreateSubscriberProbe <ISqsAckResult>();
Source.FromPublisher(publisher)
.Via(SqsAckFlow.Default(client, TestQueueUrl, SqsAckSettings.Default.WithMaxInFlight(1)))
.To(Sink.FromSubscriber(subscriber))
.Run(materializer);
subscriber.Request(3);
publisher.SendNext(MessageAction.Ignore(Message("a-1")));
publisher.SendNext(MessageAction.Ignore(Message("a-2")));
subscriber.ExpectNext <ISqsAckResult>(ack => ack is SqsIgnoreResult r && r.Action.Message.ReceiptHandle == "a-1");
subscriber.ExpectNext <ISqsAckResult>(ack => ack is SqsIgnoreResult r && r.Action.Message.ReceiptHandle == "a-2");
subscriber.Cancel();
}