message: Test output_message_buf
diff: @@ -198,11 +198,7 @@ pub fn output_message_byte(byte: u8) {
  #[cfg(not(target_os = "none"))]
  #[test]
  fn test_output() {
  - output_message_byte('t' as u8);
  - output_message_byte('e' as u8);
  - output_message_byte('s' as u8);
  - output_message_byte('t' as u8);
  - output_message_byte('\n' as u8);
  + output_message_buf(b"test message\n");
  }
  #[cfg(target_os = "none")]
  