public void SampleCombinerCopiesInitialData()
{
var hitCountSample = new DataSample { HitCount = 400, SampleType = DataSampleType.HitCount, StartTime = this.start.ToMillisecondTimestamp(), EndTime = this.end.ToMillisecondTimestamp() };
var combiner = new SampleCombiner(hitCountSample);
Assert.IsNotNull(combiner.Data);
Assert.AreEqual(DataSampleType.HitCount, combiner.Data.SampleType);
Assert.AreEqual(400, (int)(combiner.Data).HitCount);
}
public void TestHitCountSampleCombiner()
{
var hitCountSample = new DataSample { HitCount = 1, SampleType = DataSampleType.HitCount, StartTime = this.start.ToMillisecondTimestamp(), EndTime = this.end.ToMillisecondTimestamp() };
var combiner = new SampleCombiner(hitCountSample);
for (uint i = 0; i < 100; i++)
{
var before = (combiner.Data).HitCount;
combiner.AddSample(new DataSample { HitCount = i, SampleType = DataSampleType.HitCount, StartTime = this.start.ToMillisecondTimestamp(), EndTime = this.end.ToMillisecondTimestamp() });
Assert.AreEqual(before + i, (combiner.Data).HitCount);
}
}
public void SampleCombinerFactoryChecksArguments()
{
Assert.Throws<ArgumentNullException>(() => SampleCombiner.Create(null));
var garbageDataSample = new DataSample();
garbageDataSample.SampleType = DataSampleType.None;
Assert.Throws<ArgumentException>(() => new SampleCombiner(garbageDataSample));
garbageDataSample.SampleType = (DataSampleType)100;
Assert.Throws<ArgumentException>(() => new SampleCombiner(garbageDataSample));
var percentileSample = new DataSample();
Assert.Throws<ArgumentException>(() => new SampleCombiner(percentileSample));
}
public void TestHistogramSampleCombiner()
{
var initialSample = new DataSample
{
SampleType = DataSampleType.Histogram,
Histogram = new Dictionary<long, uint> {{1, 1}, {2, 1}},
StartTime = this.start.ToMillisecondTimestamp(),
EndTime = this.end.ToMillisecondTimestamp()
};
var combiner = new SampleCombiner(initialSample);
var doubleSample = new DataSample
{
Histogram = new Dictionary<long, uint> {{1, 2}, {10, 2}}
};
for (int i = 0; i < 100; i++)
{
combiner.AddData(doubleSample);
}
var result = combiner.Data;
Assert.AreEqual((uint)201, result.Histogram[1]);
Assert.AreEqual((uint)1, result.Histogram[2]);
Assert.AreEqual((uint)200, result.Histogram[10]);
}
public void TestMinimumSampleCombiner()
{
var initialSample = new DataSample
{
SampleType = DataSampleType.Minimum,
MinValue = 100,
SampleCount = 100,
StartTime = this.start.ToMillisecondTimestamp(),
EndTime = this.end.ToMillisecondTimestamp()
};
var combiner = new SampleCombiner(initialSample);
var addMe = new DataSample { SampleCount = 1000, SampleType = DataSampleType.Minimum};
for (int i = 0; i < 200; i++)
{
addMe.MinValue = i;
combiner.AddData(addMe);
}
Assert.AreEqual(0, combiner.Data.MinValue);
Assert.AreEqual((ulong)200100, combiner.Data.SampleCount);
}
public void SampleCombinerMergesTimeRanges()
{
var now = DateTime.Now;
var today = new DateTime(now.Year, now.Month, now.Day);
var yesterday = today.AddDays(-1);
var tomorrow = today.AddDays(1);
var firstSample = new DataSample { HitCount = 1, SampleType = DataSampleType.HitCount, StartTime = yesterday.ToMillisecondTimestamp(), EndTime = today.ToMillisecondTimestamp() };
var secondSample = new DataSample { HitCount = 1, SampleType = DataSampleType.HitCount, StartTime = today.ToMillisecondTimestamp(), EndTime = tomorrow.ToMillisecondTimestamp() };
var combiner = new SampleCombiner(firstSample);
combiner.AddSample(secondSample);
Assert.AreEqual(yesterday.ToMillisecondTimestamp(), combiner.Data.StartTime);
Assert.AreEqual(tomorrow.ToMillisecondTimestamp(), combiner.Data.EndTime);
}
public void TestAverageSampleCombinerDoesNotOverflow()
{
const int iterations = 10;
var theSample = new DataSample
{
SampleType = DataSampleType.Average,
Average = double.MaxValue,
SampleCount = ulong.MaxValue / (iterations + 1),
StartTime = this.start.ToMillisecondTimestamp(),
EndTime = this.end.ToMillisecondTimestamp()
};
var combiner = new SampleCombiner(theSample);
for (int i = 0; i < iterations; i++)
{
combiner.AddData(theSample);
}
}
public void TestAverageSampleCombiner()
{
var initialSample = new DataSample
{
SampleType = DataSampleType.Average,
Average = 1.0,
SampleCount = 100,
StartTime = this.start.ToMillisecondTimestamp(),
EndTime = this.end.ToMillisecondTimestamp()
};
var combiner = new SampleCombiner(initialSample);
var addMe = new DataSample { Average = 1.0, SampleCount = 1000, SampleType = DataSampleType.Average};
for (int i = 0; i < 100; i++)
{
combiner.AddData(addMe);
}
Assert.AreEqual(1.0, combiner.Data.Average);
Assert.IsTrue(combiner.Data.SampleCount > 100);
}
private static TimeRange CreateTimeRange(DataSample sample)
{
return new TimeRange(sample.StartTime, sample.EndTime);
}
private DataSample CalculatePercentile(DataSample dataSample)
{
if (dataSample == null || dataSample.SampleType != DataSampleType.Histogram)
{
return dataSample;
}
return new DataSample
{
Name = dataSample.Name,
Dimensions = new Dictionary<string, string>(dataSample.Dimensions) {{ReservedDimensions.PercentileDimension, this.requestedPercentile.ToString("##.###")}},
StartTime = dataSample.StartTime,
EndTime = dataSample.EndTime,
SampleCount = dataSample.SampleCount,
MachineCount = dataSample.MachineCount,
SampleType = DataSampleType.Percentile,
Percentile = this.requestedPercentile,
PercentileValue = dataSample.Histogram.GetValueAtPercentile(this.requestedPercentile)
};
}
private void VerifySample(DataSample sample, ulong expectedHitCount)
{
Assert.AreEqual(expectedHitCount, sample.HitCount);
}