Akka.Cluster.Tests.EWMASpec.Calculate_the_EWMA_for_multiple_variable_datastreams C# (CSharp) Method

        public void Calculate_the_EWMA_for_multiple_variable_datastreams()
        {
            var streamingDataSet = ImmutableDictionary.Create<string, Metric>();
            var usedMemory = new byte[0];
            foreach (var i in Enumerable.Range(1, 50))
            {
                // wait a while between each message to give the metrics a chance to change
                Thread.Sleep(100);
                usedMemory =
                    usedMemory.Concat(Enumerable.Repeat(Convert.ToByte(ThreadLocalRandom.Current.Next(127)), 1024))
                        .ToArray();
                var changes = _collector.Sample().Metrics.Select(latest =>
                {
                    Metric previous;
                    if (!streamingDataSet.TryGetValue(latest.Name, out previous)) return latest;
                    if (latest.IsSmooth && latest.Value != previous.Value)
                    {
                        var updated = previous + latest;
                        updated.IsSmooth.ShouldBeTrue();
                        Assert.False(Math.Abs(updated.SmoothValue - previous.SmoothValue) < 0.01);
                        return updated;
                    }
                    else return latest;
                });
                streamingDataSet = streamingDataSet.Union(changes.ToDictionary(metric => metric.Name, metric => metric)).ToImmutableDictionary(pair => pair.Key, pair => pair.Value);
            }
        }