public void TestTranspositionTable()
{
var transpositionTable = new TranspositionTable(FakeLogger.Instance, TranspositionTableHelper.SizeInMegaBytesRange.Lower);
Assert.That(transpositionTable.Version, Is.Not.EqualTo(0));
const long Key = 0x12345678ABCDEF01L;
const long OtherKey = 0x987654321L;
const ScoreBound Bound = ScoreBound.Exact;
const int Depth = CommonEngineConstants.MaxPlyDepthUpperLimit;
var bestMove = GameMove.FromStringNotation("b2b1q");
var score = EvaluationScore.Mate;
var localScore = new EvaluationScore(-789);
var entry = new TranspositionTableEntry(Key, bestMove, score, localScore, Bound, Depth);
transpositionTable.Save(ref entry);
Assert.That(entry.Version, Is.EqualTo(transpositionTable.Version));
Assert.That(transpositionTable.ProbeCount, Is.EqualTo(0));
Assert.That(transpositionTable.HitCount, Is.EqualTo(0));
var foundEntry1 = transpositionTable.Probe(Key);
Assert.That(transpositionTable.ProbeCount, Is.EqualTo(1));
Assert.That(transpositionTable.HitCount, Is.EqualTo(1));
Assert.That(foundEntry1.HasValue, Is.True);
Assert.That(foundEntry1.Value.Key, Is.EqualTo(Key));
Assert.That(foundEntry1.Value.BestMove, Is.EqualTo(bestMove));
Assert.That(foundEntry1.Value.Score, Is.EqualTo(score));
Assert.That(foundEntry1.Value.LocalScore, Is.EqualTo(localScore));
Assert.That(foundEntry1.Value.Bound, Is.EqualTo(Bound));
Assert.That(foundEntry1.Value.Depth, Is.EqualTo(Depth));
Assert.That(foundEntry1.Value.Version, Is.EqualTo(transpositionTable.Version));
var foundEntry2 = transpositionTable.Probe(OtherKey);
Assert.That(transpositionTable.ProbeCount, Is.EqualTo(2));
Assert.That(transpositionTable.HitCount, Is.EqualTo(1));
Assert.That(foundEntry2.HasValue, Is.False);
}