Akka.Streams.Tests.Dsl.QueueSourceSpec.QueueSource_should_return_false_when_element_was_not_added_to_buffer C# (CSharp) Method

        public void QueueSource_should_return_false_when_element_was_not_added_to_buffer()
        {
            this.AssertAllStagesStopped(() =>
            {
                var s = this.CreateManualProbe<int>();
                var queue =
                    Source.Queue<int>(1, OverflowStrategy.DropNew)
                        .To(Sink.FromSubscriber(s))
                        .Run(_materializer);
                var sub = s.ExpectSubscription();

                queue.OfferAsync(1);
                queue.OfferAsync(2).PipeTo(TestActor);
                ExpectMsg<Dropped>();

                sub.Request(1);
                s.ExpectNext(1);
                sub.Cancel();
            }, _materializer);
        }