It's fine I already figured it out. But to answer your question I don't edit sample cases so yes I'm sure I never added those samples.

Nevermind I figured it out. It turns out that for whatever reason the "TEST" and the "ATTEMPT" use 2 different function names. "TEST" uses toSnakeCase while "ATTEMPT" uses toUnderscore. Very weird first time I've ever seen this on codewars.

Thank you but actually I didn't rename it, for me it was called toSnakeCase. Renaming it to toUnderscore breaks it and it says this:

ReferenceError: toSnakeCase is not defined
    at /home/codewarrior/index.js:45:6
    at /home/codewarrior/index.js:47:5
    at Object.handleError
        <anonymous>

There's an issue with the tests once I press "Attempt". It shows this:

ReferenceError: toUnderscore is not defined
    at it
    at begin
    at it
    at describe
    at /runner/frameworks/javascript/cw-2.js:152:11
    at Promise._execute
    at Promise._resolveFromExecutor
    at new Promise
    at describe
    at /home/codewarrior/index.js:27:5
    at /home/codewarrior/index.js:37:5
    at Object.handleError

I'm using javascript and I have tested multiple solutions even putting them in replit and my solutions are fine.