Akka.Streams.Tests.Dsl.QueueSourceSpec.QueueSource_should_wait_for_demand_when_buffer_is_0 C# (CSharp) Метод

        public void QueueSource_should_wait_for_demand_when_buffer_is_0()
        {
            this.AssertAllStagesStopped(() =>
            {
                var s = this.CreateManualProbe<int>();
                var queue =
                    Source.Queue<int>(0, OverflowStrategy.DropHead)
                        .To(Sink.FromSubscriber(s))
                        .Run(_materializer);
                var sub = s.ExpectSubscription();

                queue.OfferAsync(1).PipeTo(TestActor);
                ExpectNoMsg(_pause);
                sub.Request(1);
                ExpectMsg<Enqueued>();
                s.ExpectNext(1);
                sub.Cancel();
            }, _materializer);
        }