public void TestHashStream()
{
var hash = Create();
var stream = new MemoryStream();
var hashStream = new HashStream <THash>(stream, hash);
Assert.AreEqual(stream.CanRead, hashStream.CanRead);
Assert.AreEqual(stream.CanWrite, hashStream.CanWrite);
Assert.AreEqual(stream.CanSeek, hashStream.CanSeek);
stream.Write(new byte[10], 0, 10);
Assert.AreEqual(stream.Position, hashStream.Position);
hashStream.Position = 0;
Assert.AreEqual(0, hashStream.Position);
Assert.AreEqual(stream.Position, hashStream.Position);
hashStream.SetLength(5);
Assert.AreEqual(stream.Length, hashStream.Length);
hashStream.Flush();
hashStream.Seek(1, SeekOrigin.Begin);
Assert.AreEqual(1, hashStream.Position);
Assert.AreEqual(stream.Position, hashStream.Position);
}