public void ShouldMerge()
{
DateTimeFormatInfo dtfi = CultureInfo.GetCultureInfo("en-US").DateTimeFormat;
float one = 8192f / 5512;
var a = new TimedHashes(new List <HashedFingerprint>
{
new HashedFingerprint(new[] { 1 }, 1, one),
new HashedFingerprint(new[] { 1 }, 2, 2 * one),
new HashedFingerprint(new[] { 1 }, 0, 0),
},
DateTime.Parse("01/15/2019 10:00:00", dtfi));
var b = new TimedHashes(new List <HashedFingerprint>
{
new HashedFingerprint(new[] { 2 }, 1, one),
new HashedFingerprint(new[] { 2 }, 2, 2 * one),
new HashedFingerprint(new[] { 2 }, 0, 0)
},
DateTime.Parse("01/15/2019 10:00:01", dtfi));
Assert.IsTrue(a.MergeWith(b, out var result));
Assert.AreEqual(0, result.HashedFingerprints[0].StartsAt);
Assert.AreEqual(1f, result.HashedFingerprints[1].StartsAt, 0.0001);
Assert.AreEqual(one, result.HashedFingerprints[2].StartsAt, 0.0001);
Assert.AreEqual(1 + one, result.HashedFingerprints[3].StartsAt, 0.0001);
Assert.AreEqual(2 * one, result.HashedFingerprints[4].StartsAt, 0.0001);
Assert.AreEqual(1 + 2 * one, result.HashedFingerprints[5].StartsAt, 0.0001);
}
public void ShouldMergeLongSequences()
{
DateTimeFormatInfo dtfi = CultureInfo.GetCultureInfo("en-US").DateTimeFormat;
var first = new List <HashedFingerprint>();
var second = new List <HashedFingerprint>();
float one = 8192f / 5512;
for (int i = 0; i < 100; ++i)
{
first.Add(new HashedFingerprint(new[] { 1 }, (uint)i, i * one));
second.Add(new HashedFingerprint(new[] { 2 }, (uint)i, i * one));
}
var r = new Random();
var a = new TimedHashes(first.OrderBy(x => r.Next()).ToList(), DateTime.Parse("01/15/2019 10:00:00", dtfi));
var b = new TimedHashes(second.OrderBy(x => r.Next()).ToList(), DateTime.Parse("01/15/2019 10:00:01.3", dtfi));
Assert.IsTrue(a.MergeWith(b, out var c));
for (int i = 0; i < 200; ++i)
{
Assert.AreEqual(i, c.HashedFingerprints[i].SequenceNumber);
if (i % 2 == 0)
{
Assert.AreEqual(one * (i / 2), c.HashedFingerprints[i].StartsAt, 0.0001);
CollectionAssert.AreEqual(new[] { 1 }, c.HashedFingerprints[i].HashBins);
}
else
{
Assert.AreEqual(1.3f + one * (i / 2), c.HashedFingerprints[i].StartsAt, 0.0001);
CollectionAssert.AreEqual(new[] { 2 }, c.HashedFingerprints[i].HashBins);
}
}
}
public void CantMergeSinceTheGapIsTooBig()
{
var dtfi = CultureInfo.GetCultureInfo("en-US").DateTimeFormat;
var a = new TimedHashes(new List <HashedFingerprint>
{
new HashedFingerprint(new[] { 1 }, 0, 0)
},
DateTime.Parse("01/15/2019 10:00:00", dtfi));
var b = new TimedHashes(new List <HashedFingerprint>
{
new HashedFingerprint(new[] { 2 }, 0, 0)
},
DateTime.Parse("01/15/2019 10:01:00", dtfi));
Assert.IsFalse(a.MergeWith(b, out _));
}