Akka.Streams.Tests.Dsl.GraphMatValueSpec.A_Graph_with_materialized_value_must_work_also_when_the_sources_module_is_copied C# (CSharp) Method

        public void A_Graph_with_materialized_value_must_work_also_when_the_sources_module_is_copied()
        {
            var foldFlow = Flow.FromGraph(GraphDsl.Create(Sink.Aggregate<int, int>(0, (sum, i) => sum + i), (b, fold) =>
            {
                var o = b.From(b.MaterializedValue).Via(Flow.Create<Task<int>>().SelectAsync(4, x => x));
                return new FlowShape<int,int>(fold.Inlet, o.Out);
            }));

            var t = Source.From(Enumerable.Range(1, 10)).Via(foldFlow).RunWith(Sink.First<int>(), Materializer);
            t.Wait(TimeSpan.FromSeconds(3)).Should().BeTrue();
            t.Result.Should().Be(55);
        }
    }