public void A_Balance_must_balance_between_subscribers_which_signal_demand()
{
this.AssertAllStagesStopped(() =>
{
var c1 = TestSubscriber.CreateManualProbe<int>(this);
var c2 = TestSubscriber.CreateManualProbe<int>(this);
RunnableGraph.FromGraph(GraphDsl.Create(b =>
{
var balance = b.Add(new Balance<int>(2));
var source = Source.From(Enumerable.Range(1, 3));
b.From(source).To(balance.In);
b.From(balance.Out(0)).To(Sink.FromSubscriber(c1));
b.From(balance.Out(1)).To(Sink.FromSubscriber(c2));
return ClosedShape.Instance;
})).Run(Materializer);
var sub1 = c1.ExpectSubscription();
var sub2 = c2.ExpectSubscription();
sub1.Request(1);
c1.ExpectNext(1).ExpectNoMsg(TimeSpan.FromMilliseconds(100));
sub2.Request(2);
c2.ExpectNext(2, 3);
c1.ExpectComplete();
c2.ExpectComplete();
}, Materializer);
}