public void NonIncrementalSeed0()
{
var input = Encoding.ASCII.GetBytes(TestString);
var hash = MetroHash128.Hash(0, input, 0, input.Length);
var secondHash = OldMetroHash128.Hash(0, input, 0, input.Length);
var comparison = new byte[]
{
0xC7, 0x7C, 0xE2, 0xBF, 0xA4, 0xED, 0x9F, 0x9B,
0x05, 0x48, 0xB2, 0xAC, 0x50, 0x74, 0xA2, 0x97
};
Assert.Equal(comparison, hash);
Assert.Equal(comparison, secondHash);
}
public void NonIncrementalSeed1()
{
var input = Encoding.ASCII.GetBytes(TestString);
var hash = MetroHash128.Hash(1, input, 0, input.Length);
var secondHash = OldMetroHash128.Hash(1, input, 0, input.Length);
var comparison = new byte[]
{
0x45, 0xA3, 0xCD, 0xB8, 0x38, 0x19, 0x9D, 0x7F,
0xBD, 0xD6, 0x8D, 0x86, 0x7A, 0x14, 0xEC, 0xEF
};
Assert.Equal(comparison, hash);
Assert.Equal(comparison, secondHash);
}
public void MultipleSizes(int size)
{
var prng = new Random();
var input = new byte[size];
prng.NextBytes(input);
for (var i = 0; i < size; i++)
{
var firstHash = MetroHash128.Hash(0, input, 0, input.Length);
var metroHash = new MetroHash128(0);
metroHash.Update(input, 0, input.Length);
var secondHash = metroHash.FinalizeHash();
Assert.Equal(firstHash, secondHash);
var thirdHash = OldMetroHash128.Hash(0, input, 0, input.Length);
Assert.Equal(firstHash, thirdHash);
}
}
public void RandomSizesSpan()
{
for (var i = 0; i < 1000; i++)
{
var prng = new Random();
var size = prng.Next(10000);
var input = new byte[size];
prng.NextBytes(input);
Span <byte> firstOutput = stackalloc byte[16];
MetroHash128.Hash(0, input, firstOutput);
var metroHash = new MetroHash128(0);
metroHash.Update(input);
Span <byte> secondOutput = stackalloc byte[16];
metroHash.FinalizeHash(secondOutput);
Assert.True(firstOutput.SequenceEqual(secondOutput));
var thirdHash = OldMetroHash128.Hash(0, input, 0, input.Length);
Assert.True(firstOutput.SequenceEqual(thirdHash));
}
}
public void MultipleSizesSpan(int size)
{
var prng = new Random();
var input = new byte[size];
prng.NextBytes(input);
for (var i = 0; i < size; i++)
{
Span <byte> firstHash = stackalloc byte[16];
MetroHash128.Hash(0, input.AsSpan(), firstHash);
var metroHash = new MetroHash128(0);
metroHash.Update(input.AsSpan());
var secondHash = metroHash.FinalizeHash();
Assert.Equal(firstHash.ToArray(), secondHash);
var thirdHash = OldMetroHash128.Hash(0, input, 0, input.Length);
Assert.Equal(firstHash.ToArray(), thirdHash);
}
}
