public static void TestNotSupportedMethods()
{
using (V2HmacStream <Stream> stream = V2HmacStream.Create(new V2HmacCalculator(new SymmetricKey(new byte[512]))))
{
Assert.Throws <NotSupportedException>(() => stream.Read(new byte[1], 0, 1));
Assert.Throws <NotSupportedException>(() => stream.Seek(0, SeekOrigin.Begin));
Assert.Throws <NotSupportedException>(() => stream.SetLength(0));
Assert.Throws <NotSupportedException>(() => stream.Position = 0);
}
}