public void ComputeShortIdKeyTest()
{
// A priliminary test making sure the method works as we think it should.
// This will be replaced when we find out some examples of ShortTxIds!
using Sha256 sha = new Sha256();
var rand = new Random();
Span <byte> data = new byte[88];
rand.NextBytes(data);
ulong nonce = data[87]
| ((ulong)data[86] << 8)
| ((ulong)data[85] << 16)
| ((ulong)data[84] << 24)
| ((ulong)data[83] << 32)
| ((ulong)data[82] << 40)
| ((ulong)data[81] << 48)
| ((ulong)data[80] << 56);
byte[] actual = sha.ComputeShortIdKey(data.Slice(0, 80).ToArray(), nonce);
byte[] expected = ((Span <byte>)sha.ComputeHash(data.ToArray())).Slice(0, 16).ToArray();
Assert.Equal(expected, actual);
}