Akka.Streams.Tests.Dsl.FlowFromTaskSpec.A_Flow_based_on_a_Task_must_produce_one_element_when_Task_is_completed_but_not_before_request C# (CSharp) Method

        public void A_Flow_based_on_a_Task_must_produce_one_element_when_Task_is_completed_but_not_before_request()
        {
            var promise = new TaskCompletionSource<int>();
            var c = TestSubscriber.CreateManualProbe<int>(this);
            var p = Source.FromTask(promise.Task).RunWith(Sink.AsPublisher<int>(true), Materializer);
            p.Subscribe(c);
            var sub = c.ExpectSubscription();
            promise.SetResult(1);
            c.ExpectNoMsg(TimeSpan.FromMilliseconds(200));
            sub.Request(1);
            c.ExpectNext(1);
            c.ExpectComplete();
        }