public void HashAlgorithmIsStable()
{
// We want to test with multiple blocks.
var bytes = new byte[VsoHash.BlockSize * 5];
using (var hashAlgorithm = new VsoHashAlgorithm())
{
hashAlgorithm.Initialize();
byte[] hashAlgoBytes = hashAlgorithm.ComputeHash(bytes);
var hash = new ContentHash(HashType.Vso0, hashAlgoBytes);
Assert.Equal("VSO0:36668B653DB0B48D3AA1F2FDDCEA481B34A310C166B9B041A5B23B59BE02E5DB00", hash.ToString());
}
}
public void HashAlgorithmForCacheIsTheSame()
{
using (var hashAlgorithm = new VsoHashAlgorithm())
{
var blobSizes = new[]
{
0, 1,
VsoHash.BlockSize - 1, VsoHash.BlockSize, VsoHash.BlockSize + 1,
(2 * VsoHash.BlockSize) - 1, 2 * VsoHash.BlockSize, (2 * VsoHash.BlockSize) + 1,
};
foreach (int blobSize in blobSizes)
{
var content = ThreadSafeRandom.GetBytes(blobSize);
hashAlgorithm.Initialize();
byte[] hashAlgoBytes = hashAlgorithm.ComputeHash(content);
BlobIdentifier blobId = VsoHash.CalculateBlobIdentifier(content);
Assert.True(hashAlgoBytes.SequenceEqual(blobId.Bytes));
}
}
}
