Akka.Streams.Tests.Dsl.FlowFlattenMergeSpec.A_FlattenMerge_must_bubble_up_substream_exceptions C# (CSharp) Method

        public void A_FlattenMerge_must_bubble_up_substream_exceptions()
        {
            var ex = new TestException("buh");
            var future = Source.From(new[] { Blocked, Blocked, Source.Failed<int>(ex) })
                .MergeMany(10, x => x)
                .RunWith(Sink.First<int>(), Materializer);

            future.Invoking(f => f.Wait(TimeSpan.FromSeconds(1))).ShouldThrow<TestException>().And.Should().Be(ex);
        }