It's my attempts of practicing and learning with the katas challenges.
More info: The challenges are in http://codekata.com/ and it were created by @PragDave. It also has exercises from book TDD na prática
- kata9-challenge: with java + some unit tests.
- tdd-challenge: also with java + unit tests. Built while learning how to do TDD. If you want references to try it by doing TDD, here is the description of rules described in BDD.