public void should_decrease_the_average_at_each_minute()
{
var m1_ewma = ExponentialWeightedMovingAverage
.ForOneMinute(new MetricConfig("test1"), TimeUnit.Seconds,
new MetricContext(mailbox_, step_clock_));
double offset = 0.000001;
m1_ewma.Mark(3, step_clock_.Tick);
step_clock_.TickNow(1);
Assert.That(m1_ewma.Compute(step_clock_.Tick).Value,
Is.InRange(0.6 - offset, 0.6 + offset));
var averages = new[] {
0.22072766,
0.08120117,
0.02987224,
0.01098938,
0.00404277,
0.00148725,
0.00054713,
0.00020128,
0.00007405,
0.00002724,
0.00001002,
0.00000369,
0.00000136,
0.00000050,
0.00000018
};
foreach (var average in averages)
{
step_clock_.TickNow(12); // 12* 5 seconds = 1 minute
Assert.That(m1_ewma.Compute(step_clock_.Tick).Value,
Is.InRange(average - offset, average + offset));
}
step_clock_.TickNow(10);
Assert.That(m1_ewma.Compute(step_clock_.Tick).Value,
Is.InRange(0.00000018 - offset, 0.00000018 + offset));
}
public void should_decrease_the_average_at_each_five_minutes()
{
var m1_ewma = ExponentialWeightedMovingAverage
.ForFiveMinutes(new MetricConfig("test1"), TimeUnit.Seconds,
new MetricContext(mailbox_, step_clock_));
double offset = 0.000001;
m1_ewma.Mark(3, step_clock_.Tick);
step_clock_.TickNow(1);
Assert.That(m1_ewma.Compute(step_clock_.Tick).Value,
Is.InRange(0.6 - offset, 0.6 + offset));
var averages = new[] {
0.49123845,
0.40219203,
0.32928698,
0.26959738,
0.22072766,
0.18071653,
0.14795818,
0.12113791,
0.09917933,
0.08120117,
0.06648190,
0.05443077,
0.04456415,
0.03648604,
0.02987224
};
foreach (var average in averages)
{
step_clock_.TickNow(12); // +30 seconds
Assert.That(m1_ewma.Compute(step_clock_.Tick).Value,
Is.InRange(average - offset, average + offset));
}
step_clock_.TickNow(12);
}
public void should_decrease_the_average_at_each_fifteen_minutes()
{
var m1_ewma = ExponentialWeightedMovingAverage
.ForFifteenMinutes(new MetricConfig("test1"), TimeUnit.Seconds,
new MetricContext(mailbox_, step_clock_));
double offset = 0.000001;
m1_ewma.Mark(3, step_clock_.Tick);
step_clock_.TickNow(1);
Assert.That(m1_ewma.Compute(step_clock_.Tick).Value,
Is.InRange(0.6 - offset, 0.6 + offset));
var averages = new[] {
0.56130419,
0.52510399,
0.49123845,
0.45955700,
0.42991879,
0.40219203,
0.37625345,
0.35198773,
0.32928698,
0.30805027,
0.28818318,
0.26959738,
0.25221023,
0.23594443,
0.22072766
};
foreach (var average in averages)
{
step_clock_.TickNow(12); // 12* 5 seconds = 1 minute
Assert.That(m1_ewma.Compute(step_clock_.Tick).Value,
Is.InRange(average - offset, average + offset));
}
step_clock_.TickNow(12);
}
