public void Count_of_filtered_is_equals_to_count_of_linqWhered()
{
var start = new DateTime(2016, 1, 1);
var end = new DateTime(2016, 1, 8);
var sw = new Stopwatch();
sw.Start();
var linq = Samples.Where(s => start < s.Value.DateTime && s.Value.DateTime < end).ToArray();
sw.Stop();
Log($"linq whered count={linq.Length}, time={sw.ElapsedMilliseconds}[ms]");
sw.Reset();
var btree = new BPlusTree <DateTime, long>();
foreach (var s in Samples)
{
btree.Add(s.Value.DateTime, s.Key);
}
sw.Start();
var result = btree.GtAndLt(start, end).Select(id => Samples[id]).ToArray();
sw.Stop();
Log($"filtered count={result.Length}, time={sw.ElapsedMilliseconds}[ms]");
sw.Reset();
Assert.AreEqual(linq.Length, result.Length);
}
