Akka.Streams.Tests.Implementation.Fusing.InterpreterStressSpec.Interpreter_must_work_with_a_massive_chain_of_maps C# (CSharp) Метод

        public void Interpreter_must_work_with_a_massive_chain_of_maps()
        {
            var ops = Enumerable.Range(1, ChainLength).Select(_ => _select)
                .Cast<IStage<int, int>>().ToArray();
            WithOneBoundedSetup(ops, (lastEvents, upstream, downstream) =>
                {
                    lastEvents().Should().BeEmpty();
                    var tstamp = new Stopwatch();
                    tstamp.Start();

                    var i = 0;
                    while (i < Repetition)
                    {
                        downstream.RequestOne();
                        lastEvents().Should().BeEquivalentTo(new RequestOne());

                        upstream.OnNext(i);
                        lastEvents().Should().BeEquivalentTo(new OnNext(i + ChainLength));
                        i++;
                    }

                    upstream.OnComplete();
                    lastEvents().Should().BeEquivalentTo(new OnComplete());

                    tstamp.Stop();
                    var time = tstamp.Elapsed.TotalSeconds;
                    // Not a real benchmark, just for sanity check
                    _helper?.WriteLine($"Chain finished in {time} seconds {ChainLength * Repetition} maps in total and {(ChainLength * Repetition) / (time * 1000 * 1000)} million maps/s");
                });
        }