public void Count()
{
var list = new DateTime[1];
var sut = new TimeSeriesLookupList <DateTime>(list, t => t);
Assert.That(sut.Count, Is.EqualTo(1));
}
public void GetEnumerator_Ordered()
{
var value1 = DateTime.UtcNow;
var value2 = DateTime.UtcNow.AddSeconds(-1);
var sut = new TimeSeriesLookupList <DateTime>(new[] { value1, value2 }, t => t);
Assert.That(sut, Is.EqualTo(new [] { value2, value1 }));
}
public void Indexer_Ordered()
{
var value1 = DateTime.UtcNow;
var value2 = DateTime.UtcNow.AddSeconds(-1);
var sut = new TimeSeriesLookupList <DateTime>(new[] { value1, value2 }, t => t);
Assert.That(sut[0], Is.EqualTo(value2));
Assert.That(sut[1], Is.EqualTo(value1));
}
public void GetBetween_RangeToExclusive_Excluded()
{
var timestamp = DateTime.UtcNow;
var values = Enumerable.Range(0, 2500).Select(x => timestamp.AddSeconds(x));
var sut = new TimeSeriesLookupList <DateTime>(values, t => t);
var result = sut.GetBetween(timestamp.AddMinutes(-1), timestamp);
Assert.That(result, Is.Empty);
}
public void GetBetween_RangeFromInclusive_Included()
{
var timestamp = DateTime.UtcNow;
var values = Enumerable.Range(0, 2500).Select(x => timestamp.AddSeconds(-x));
var sut = new TimeSeriesLookupList <DateTime>(values, t => t);
var result = sut.GetBetween(timestamp, timestamp.AddMinutes(1));
Assert.That(result, Is.EqualTo(new[] { timestamp }));
}
public void GetBetween_RangeOutsideRight_Empty()
{
var timestamp = DateTime.UtcNow;
var values = Enumerable.Range(0, 2500).Select(x => timestamp.AddSeconds(-x));
var sut = new TimeSeriesLookupList <DateTime>(values, t => t);
var result = sut.GetBetween(timestamp.AddSeconds(1), timestamp.AddSeconds(2));
Assert.That(result, Is.Empty);
}
public void GetBetween_Dates_Empty()
{
var timestamp = DateTime.UtcNow;
var values = Enumerable.Range(0, 200).Select(x => timestamp.AddDays(x));
var sut = new TimeSeriesLookupList <DateTime>(values, t => t);
var result = sut.GetBetween(timestamp.AddDays(1), timestamp.AddDays(2));
Assert.That(result.Count, Is.EqualTo(1));
}
public void GetBetween_RangeInside_Range()
{
var timestamp = DateTime.UtcNow;
var values = Enumerable.Range(0, 2500).Select(x => timestamp.AddSeconds(x));
var sut = new TimeSeriesLookupList <DateTime>(values, t => t);
var result = sut.GetBetween(timestamp.AddMinutes(1), timestamp.AddMinutes(2));
Assert.That(result.Count, Is.EqualTo(60));
}
public void GetBetween_RangeInsideWithDuplicates_IncludeDuplicates()
{
var timestamp = DateTime.UtcNow;
var values = Enumerable.Range(0, 20).Select(x => timestamp.AddMinutes(x)).ToList();
values.AddRange(Enumerable.Range(0, 20).Select(x => timestamp.AddMinutes(x)));
var sut = new TimeSeriesLookupList <DateTime>(values.ToList(), t => t);
var result = sut.GetBetween(timestamp, timestamp.AddSeconds(1));
Assert.That(result, Is.EqualTo(new [] { timestamp, timestamp }));
}
public void Benchmark(int count, int samplesPerWindow)
{
var timestamp = DateTime.UtcNow;
var values = Enumerable.Range(0, count).Select(x => timestamp.AddSeconds(x));
var sut = new TimeSeriesLookupList <DateTime>(values, t => t);
var sw = Stopwatch.StartNew();
for (var i = 0; i < count; i++)
{
var result = sut.GetBetween(timestamp, timestamp.AddSeconds(samplesPerWindow)).Count;
}
sw.Stop();
var opsPerSec = count / (sw.ElapsedMilliseconds + 0.001m) * 1000m;
Assert.Inconclusive($"{count} iterations with {samplesPerWindow} samples per window, {sw.Elapsed} ({opsPerSec.ToString("N0")} ops/sec)");
}