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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.
Forgive my ignorance, but when I use the given unit tests, mine is passing, but when I try to Submit it, it's failing some arbitrary tests.
Are these test outlined some place where I can actually test against them and try to figue out how my solution is failing, or is it more of a 'submit it until your code passes all tests' etc?