Akka.Streams.Tests.Dsl.FlowSplitWhenSpec.SplitWhen_must_fail_stream_if_substream_not_materialized_in_time C# (CSharp) Метод

        public void SplitWhen_must_fail_stream_if_substream_not_materialized_in_time()
        {
            this.AssertAllStagesStopped(() =>
            {
                var tightTimeoutMaterializer = ActorMaterializer.Create(Sys,
                    ActorMaterializerSettings.Create(Sys)
                        .WithSubscriptionTimeoutSettings(
                            new StreamSubscriptionTimeoutSettings(
                                StreamSubscriptionTimeoutTerminationMode.CancelTermination,
                                TimeSpan.FromMilliseconds(500))));

                var testSource =
                    Source.Single(1)
                        .MapMaterializedValue<TaskCompletionSource<int>>(_ => null)
                        .Concat(Source.Maybe<int>())
                        .SplitWhen(_ => true);
                Action action = () =>
                {
                    var task =
                        testSource.Lift()
                            .Delay(TimeSpan.FromSeconds(1))
                            .ConcatMany(s => s.MapMaterializedValue<TaskCompletionSource<int>>(_ => null))
                            .RunWith(Sink.Ignore<int>(), tightTimeoutMaterializer);
                    task.Wait(TimeSpan.FromSeconds(3)).Should().BeTrue();
                };

                action.ShouldThrow<SubscriptionTimeoutException>();
            }, Materializer);
        }