If you are specifically trying to test Unicode support, then you might want to try multiple formulations for the same glyph. E.g. you can make é either directly

If you are specifically trying to test Unicode support, then you might want to try multiple formulations for the same glyph. E.g. you can make é either directly with 00e9 or with a combining mark 0065 0301. You can't tell the difference in a string literal, but escape codes will make it clear.