public void A_Flow_using_Join_must_allow_for_interleave_cycle()
{
this.AssertAllStagesStopped(() =>
{
var source = Source.Single("lonely traveler").MapMaterializedValue(_ => Task.FromResult(""));
var flow = Flow.FromGraph(GraphDsl.Create(Sink.First <string>(), (b, sink) =>
{
var interleave = b.Add(Interleave.Create <string>(2, 1));
var broadcast = b.Add(new Broadcast <string>(2, true));
b.From(source).To(interleave.In(0));
b.From(interleave.Out).To(broadcast.In);
b.From(broadcast.Out(0)).To(sink);
return(new FlowShape <string, string>(interleave.In(1), broadcast.Out(1)));
}));
var t = flow.Join(Flow.Create <string>()).Run(Materializer);
t.Wait(TimeSpan.FromSeconds(3)).Should().BeTrue();
t.Result.Should().Be("lonely traveler");
}, Materializer);
}