public void CanAppendHistogram()
{
var histogram1 = Create(DefaultHighestTrackableValue, DefaultSignificantDigits);
histogram1.RecordValue(1);
histogram1.RecordValue((long.MaxValue / 2) + 1);
histogram1.SetTimes();
var histogram2 = Create(DefaultHighestTrackableValue, DefaultSignificantDigits);
histogram2.RecordValue(2);
histogram2.SetTimes();
byte[] data;
using (var writerStream = new MemoryStream())
using (var log = new HistogramLogWriter(writerStream))
{
log.Append(histogram1);
log.Append(histogram2);
data = writerStream.ToArray();
}
var actualHistograms = data.ReadHistograms();
Assert.Equal(2, actualHistograms.Length);
HistogramAssert.AreValueEqual(histogram1, actualHistograms.First());
HistogramAssert.AreValueEqual(histogram2, actualHistograms.Skip(1).First());
}
public void CanReadV2TaggedLogs(string logPath)
{
var readerStream = GetEmbeddedFileStream(logPath);
var reader = new HistogramLogReader(readerStream);
int histogramCount = 0;
long totalCount = 0;
var accumulatedHistogramWithNoTag = Create(85899345920838, DefaultSignificantDigits);
var accumulatedHistogramWithTagA = Create(85899345920838, DefaultSignificantDigits);
foreach (var histogram in reader.ReadHistograms())
{
histogramCount++;
Assert.IsAssignableFrom <HistogramBase>(histogram);// "Expected integer value histograms in log file");
totalCount += histogram.TotalCount;
if (string.IsNullOrEmpty(histogram.Tag))
{
accumulatedHistogramWithNoTag.Add(histogram);
}
else if (histogram.Tag == "A")
{
accumulatedHistogramWithTagA.Add(histogram);
}
}
Assert.Equal(42, histogramCount);
Assert.Equal(32290, totalCount);
HistogramAssert.AreValueEqual(accumulatedHistogramWithNoTag, accumulatedHistogramWithTagA);
}
public void Given_a_Histogram_populated_with_full_range_of_values_When_encoded_and_decoded_with_compression_Then_data_is_preserved()
{
var source = Create(DefaultHighestTrackableValue, DefaultSignificantFigures);
LoadFullRange(source);
var result = CompressedEncodeDecode(source);
HistogramAssert.AreValueEqual(source, result);
}
public void Given_a_populated_Histogram_When_encoded_and_decoded_Then_data_is_preserved()
{
var source = Create(DefaultHighestTrackableValue, DefaultSignificantFigures);
Load(source);
var result = EncodeDecode(source);
HistogramAssert.AreValueEqual(source, result);
}
public void CanRoundTripSingleHistogram(long highestTrackableValue, int significantDigits, int multiplier)
{
var histogram = CreatePopulatedHistogram(highestTrackableValue, significantDigits, multiplier);
histogram.SetTimes();
var data = histogram.WriteLog();
var actualHistograms = data.ReadHistograms();
Assert.Equal(1, actualHistograms.Length);
HistogramAssert.AreValueEqual(histogram, actualHistograms.Single());
}
protected void RoundTripSingleHistogramsWithFullRangesOfCountsAndValues(long count)
{
var value = 1;
var histogram = Create(DefaultHighestTrackableValue, DefaultSignificantDigits);
histogram.RecordValueWithCount(value, count);
histogram.SetTimes();
var data = histogram.WriteLog();
var actualHistograms = data.ReadHistograms();
Assert.Equal(1, actualHistograms.Length);
HistogramAssert.AreValueEqual(histogram, actualHistograms.Single());
}
public void CanRoundTripSingleHistogramsWithSparseValues(string tag)
{
var histogram = Create(DefaultHighestTrackableValue, DefaultSignificantDigits);
histogram.Tag = tag;
histogram.RecordValue(1);
histogram.RecordValue((long.MaxValue / 2) + 1);
histogram.SetTimes();
var data = histogram.WriteLog();
var actualHistograms = data.ReadHistograms();
Assert.Equal(1, actualHistograms.Length);
Assert.Equal(tag, actualHistograms[0].Tag);
HistogramAssert.AreValueEqual(histogram, actualHistograms.Single());
}