Coding Dojo: Open-Closed Principle Kata

We'll meet and practice with the Open-Closed Principle kata http://bit.ly/1FT8m4Z by Matteo Vaccari.

To access eBay premises you must fill this form: http://bit.ly/1jeHF0j

In this style of kata you must follow these rules:

1. Write a failing test.
2. Write a setup that builds a object that makes the tests pass.
3. Write next failing test.
4. Can you make it pass by just changing the setup and creating new classes?

• Yes: Great! Go back to step 3.
• No: Refactor until you can!