the C# tests not longer use Assert.AreEqual(), they use Assert.That(). you may need to reset the sample tests, as they are cached if you trained on the kata previously

heh, I see now it was little counter intuitive from my perspective.
I just skipped training so I could see if i can do something else instead and I did.
I was dead sure I was right. :\ srry
I am luckier than I think!
ugh, repetio mater studiorum est?
I am now even more confused how the heck did Python code worked?
I leave it for now as it is!
Got it! All is good!

Your Python solution will not work in JavaScript. Your problems are caused exactly by the thing which works in Python, but not in JS. arr[-1] works differently in JS and Python.

No, it's not! It worked. JS.
This just a sick joke.

With your updated code it is:

Your code is using the expression nbPetals % ph.length - 1 to index the array, which can result in -1 when nbPetals is a multiple of 6.

nbPetals % phrasess.length - 1 does not do what you think it does, but you need to take it from here.

I don't get it!

Your code does not correctly calculate the position in the phrases array because the operator precedence is wrong. As a result, the selected index is outside the valid range, causing your function to return undefined instead of a phrase from the list.

-- 🤖

There was only one sample/fixed lowercase test, as well as in JS; rn it's fixed

Actually there ARE random tests in Crystal, but they were in the sample test section, while the actual sampl tests were in actual section, tl;dr the author just messed them up while uploading the original Crystal fork. That happens XD

anyways, corrected that, now the problem is resolved~

added as an edit to kata since it's too minor for a separate fork

Removed lowercase letters in Ruby, done in this fork

Fixed.

Fixed, now all tests are guaranteed to have uppercase

the funniest thing is that the only lowercase test; all random tests are using uppercase