public void TwoHashes_WithSameData_AreSame()
{
var inputX = new byte[] { 0, 1, 2, 3, 4 };
var inputY = new byte[] { 0, 1, 2, 3, 4 };
var equalityComparer = new HashEqualityComparer();
var x = Mock.Of <IHash>(m => m.Bytes == inputX);
var y = Mock.Of <IHash>(m => m.Bytes == inputY);
Assert.IsTrue(equalityComparer.Equals(x, y));
}
public void TwoHashes_WithDifferentData_AreDifferent()
{
var inputX = new byte[] { 0, 1, 2, 3, 4 };
var inputY = new byte[] { 1, 2, 3, 4, 5 };
var equalityComparer = new HashEqualityComparer();
var x = Mock.Of <IHash>(m => m.Bytes == inputX);
var y = Mock.Of <IHash>(m => m.Bytes == inputY);
Assert.IsFalse(equalityComparer.Equals(x, y));
}
public void HashEqualityComparer_Equals_SameSize1()
{
byte[] vector1 = "92937945B518814341DE3F726500D4FF".HexToBinary();
byte[] vector2 = (byte[])vector1.Clone();
bool result = comparer.Equals(vector1, vector2);
Assert.AreEqual(true, result);
}
/// <summary>
/// Constructor
/// </summary>
protected KeyConfigurationBase(ICountConfiguration <TCount> configuration, bool createValueFilter = true) :
base(createValueFilter)
{
_countConfiguration = configuration;
_getId = GetIdImpl;
_idHash = id =>
{
var res = BitConverter.ToInt32(_murmurHash.Hash(BitConverter.GetBytes(id)), 0);
return(res == 0 ? 1 : res);
};
_hashes = (hash, hashCount) => ComputeHash(hash, BitConverter.ToInt32(_murmurHash.Hash(BitConverter.GetBytes(hash), 912345678), 0), hashCount, 1);
//the hashSum value is an identity hash.
_entityHash = e => IdHash(GetId(e));
_isPure = (d, p) => CountConfiguration.IsPure(d.Counts[p]) &&
HashEqualityComparer.Equals(d.HashSumProvider[p], IdHash(d.IdSumProvider[p]));
_idAdd = _idRemove = (id1, id2) => id1 ^ id2;
_idIntersect = (id1, id2) => id1 & id2;
_hashIdentity = 0;
_idIdentity = 0L;
_hashAdd = _hashRemove = (h1, h2) => h1 ^ h2;
_hashIntersect = (h1, h2) => h1 & h2;
_idEqualityComparer = EqualityComparer <long> .Default;
_hashEqualityComparer = EqualityComparer <int> .Default;
}