Loading collection data...
Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
They don't appear from nowhere, they're are in the input, print it: https://docs.codewars.com/training/troubleshooting#print-input
Should be fixed now.
You're right. My bad, I'm the one who approved the translation. It should be fixed soon (the last line in the tests must be removed). Thanks for alerting.
(when you'll practice long enough here, you'll realize that what you suggest is not more "excitment", but more "boredom" ;o )