public void ShouldCreateEmptyHistogram()
{
ISyncHistogram histogram = Histograms.Uniform();
Assert.That(histogram.Count, Is.EqualTo(0));
Assert.That(histogram.Max, Is.InRange(0, 0.0001));
Assert.That(histogram.Min, Is.InRange(0, 0.0001));
Assert.That(histogram.Mean, Is.InRange(0, 0.0001));
Assert.That(histogram.StandardDeviation, Is.InRange(0, 0.0001));
Snapshot snapshot = histogram.Snapshot;
Assert.That(snapshot.Median, Is.InRange(0, 0.0001));
Assert.That(snapshot.Percentile75, Is.InRange(0, 0.0001));
Assert.That(snapshot.Percentile99, Is.InRange(0, 0.0001));
Assert.That(snapshot.Size, Is.EqualTo(0));
}
public void ShouldCreateHistogramWith1000Elements()
{
ISyncHistogram histogram = Histograms.Uniform();
for (int i = 1; i <= 1000; i++)
{
histogram.Update(i);
}
Assert.That(histogram.Count, Is.EqualTo(1000));
Assert.That(histogram.Max, Is.InRange(999.9999, 1000.0001));
Assert.That(histogram.Min, Is.InRange(0.9999, 1.0001));
Assert.That(histogram.Mean, Is.InRange(500.4999, 500.50001));
Assert.That(histogram.StandardDeviation, Is.InRange(288.8193, 288.8195));
Snapshot snapshot = histogram.Snapshot;
Assert.That(snapshot.Median, Is.InRange(500.4999, 500.50001));
Assert.That(snapshot.Percentile75, Is.InRange(750.7499, 750.7501));
Assert.That(snapshot.Percentile99, Is.InRange(990.9899, 990.9901));
Assert.That(snapshot.Size, Is.EqualTo(1000));
}