Normally I would say to make it mandatory, but it seems that a kata like that was already created, as pointed out by Zozo. I'll let you decide.

It would certainly make it more interesting.

Haven't been on CodeWars for months, but you've piqued my interest. I'll look into it this week.

@GiacomoSorbi Thanks for the translation. You are welcome to implement jolaf's suggestion if you want, but I have no idea if it's possible to give someone else editorial privileges on a kata.

Yeah after your first comment I've noticed that myself and I've updated them to match the U.S., Canada and modern British system, it seems that I've been using some Greek-based system for the last two.

I've also added a link to the Wikipedia article along with the name of the column where the magnitudes can be found and added a simple message if a test doesn't pass.

I'll be sure to invest more time on my next katas to prevent such silly mistakes. This one was pretty rushed.

Many thanks for the feedback! I've updated the tests and they should be fine enough as they are now, I guess. That mistake I did was quite horrible.