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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.
The tests basically expect you to throw a
RuntimeException
or its subclass. When you do this, the tests will pass, but you will still have one or two bugs to fix.The description should definitely mention what kind of exception is expected.