Refactoring Legacy Code

This Kata is about refactoring the legacy code to simplify it, then add the new feature requests to the refactored code. At the same time, pin-down tests help us to keep the legacy code behavior not altered.

Techniques used:

1. Refactoring: Extract Constant strings.
2. Refactoring: Extract Constant Numbers.
3. Refactoring: Extract Variable/Extract Method.
4. Refactoring: Simplify Arithmetic.
5. Refactoring: Simplify Booleans.
6. Refactoring: Group-Related Logic.
7. Refactoring: Final Touches.
8. Add the new behavior to refactored code.

Stabilizing Legacy code

This Kata is about stabilizing a legacy code at hand by writing the first pin-down tests to understand its behavior before refactoring the legacy production code.

Techniques used:

• Pin-down tests from the requirements document.
• Pin-down tests based on code coverage.
• Pin-down tests based on branch coverage.

Roman Numerals Kata

This Kata is about using TDD, and refactoring techniques to solve Roman --> Arabic numerals conversion problem.