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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.
Your example tests do not test at all, and your submit tests do not enforce the requirements.
I haven't actually read your tests, but if they do not prohibit cheating in the way you describe, that is a problem as well. Politely asking solvers not to cheat is not enough.