public void WriteByte_CantWrite()
        {
            ReadOnlyStream ro     = new ReadOnlyStream();
            BufferedStream stream = new BufferedStream(ro);

            stream.WriteByte(0);
        }
        public void Write_CantWrite()
        {
            ReadOnlyStream ro     = new ReadOnlyStream();
            BufferedStream stream = new BufferedStream(ro);

            stream.Write(new byte [1], 0, 1);
        }