public void Test_Zeroes()
{
var bytes1 = new byte[101];
var bytes2 = new byte[100];
var hash1 = BufferUtil.CalculateSimpleHashCode(bytes1);
var hash2 = BufferUtil.CalculateSimpleHashCode(bytes2);
Assert.AreNotEqual(0, hash1);
Assert.AreNotEqual(0, hash2);
Assert.AreNotEqual(hash1, hash2);
}
public void Mess_detection()
{
var length = Rand.Next(1, 100);
var b = new byte[length];
new RNGCryptoServiceProvider().GetBytes(b);
var hash = BufferUtil.CalculateSimpleHashCode(b);
for (int i = 0; i < length; i++)
{
unchecked
{
b[i] ^= 1;
Assert.AreNotEqual(hash, BufferUtil.CalculateSimpleHashCode(b), "Messing at {0} of {1}", i, length);
b[i] ^= 1;
Assert.AreEqual(hash, BufferUtil.CalculateSimpleHashCode(b), "Restoring at {0} of {1}", i, length);
}
}
}
public void Hash_random()
{
var length = Rand.Next(1, 100);
var b = new byte[length];
new RNGCryptoServiceProvider().GetBytes(b);
var hash1 = BufferUtil.CalculateSimpleHashCode(b);
var hash2 = BufferUtil.CalculateSimpleHashCode(b);
Assert.AreEqual(hash1, hash2);
unchecked
{
b[Rand.Next(length)] += 1;
}
Assert.AreNotEqual(hash1, BufferUtil.CalculateSimpleHashCode(b));
}
public void Null()
{
// ReSharper disable AssignNullToNotNullAttribute
BufferUtil.CalculateSimpleHashCode(null);
// ReSharper restore AssignNullToNotNullAttribute
}
public void Hashing_short()
{
var b = new byte[] { 1, 2 };
BufferUtil.CalculateSimpleHashCode(b);
}