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.
tried it, still have the same error
It's a CodeWars interface bug. Preloaded code only gets defined when you submit, not when you test.
As a workaround, put your tests in the main code window and hit Submit instead of Run Tests.