Akka.Streams.Tests.Dsl.FlowSelectAsyncSpec.A_Flow_with_SelectAsync_must_produce_task_elements C# (CSharp) Method

        public void A_Flow_with_SelectAsync_must_produce_task_elements()
        {
            this.AssertAllStagesStopped(() =>
            {
                var c = TestSubscriber.CreateManualProbe<int>(this);
                Source.From(Enumerable.Range(1, 3))
                    .SelectAsync(4, Task.FromResult)
                    .RunWith(Sink.FromSubscriber(c), Materializer);
                var sub = c.ExpectSubscription();

                sub.Request(2);
                c.ExpectNext(1)
                    .ExpectNext(2)
                    .ExpectNoMsg(TimeSpan.FromMilliseconds(200));
                sub.Request(2);

                c.ExpectNext(3)
                    .ExpectComplete();
            }, Materializer);
        }