Pile-of-poo test for text-to-unicode

[lionel-rowe]

Describe the bug

The text-to-unicode tool fails the Pile of Poo Test:

Whenever you’re working on a piece of JavaScript code that deals with strings or regular expressions in some way, just add a unit test that contains a pile of poo (💩) in a string, and see if anything breaks.

In other words, it fails to correctly handle any non-BMP code point (code points higher than 0xffff).

Also, decimal-encoded HTML/XML entities seems like an odd default choice to represent "Unicode". I'd expect the default to be \u{...} or maybe U+... notation, with ... being hex digits. But offering HTML/XML entities as an alternative could be useful too.

What happened?

💩 results for https://it-tools.tech/text-to-unicode:

document.write('��') renders as ��, not 💩.

System information

Win 11, Chrome Version 124.0.6367.158 (Official Build) (64-bit)

Where did you encounter the bug?

Public app (it-tools.tech)