test_byte_encoding_decoding.cs

      [Fact]
      public void test_byte_encoding_decoding()
      {
         var encoding = new UTF8Encoding();         
         byte[] inputBytes = encoding.GetBytes("sample");
         var hexString = BitConverter.ToString(inputBytes);

         byte[] outputBytes = hexString.Split('-').Select(hex => byte.Parse(hex, NumberStyles.HexNumber)).ToArray();

         Assert.Equal(inputBytes, outputBytes);
      }