Akka.Streams.Tests.Dsl.FlowAggregateSpec.A_Aggregate_must_propagate_an_error C# (CSharp) Méthode

        public void A_Aggregate_must_propagate_an_error()
        {
            this.AssertAllStagesStopped(() =>
            {
                var error = new TestException("buh");
                var future = InputSource.Select(x =>
                {
                    if (x > 50)
                        throw error;
                    return x;
                }).RunAggregate(NotUsed.Instance, Keep.None, Materializer);

                future.Invoking(f => f.Wait(TimeSpan.FromSeconds(3)))
                    .ShouldThrow<TestException>()
                    .And.Should()
                    .Be(error);
            }, Materializer);

        }