Test Driven Development Why and How

1. TDD – Test Driven Development David Paluy June 15, 2008

4. When do we need to write tests? If my code works perfectly, why should I write tests for it?

7. When do we need to write tests? So, if the code works perfectly, and I’m never going to change it, then why should I write tests?

11. The TDD process RED GREEN REFACTOR

12. The TDD process Write the tests Write code until tests pass Try to optimize the code

13. When do we need to write tests? So, if the code works perfectly, and I’m never going to change it, and the design is already flawless, then why should I write tests?

16. Yoga Instructions

17. Yoga Instructions Examples > Comments

18. When do we need to write tests? So, if the code works perfectly, and I’m never going to change it, and the design is already flawless and it is totally readable and understandable, then why should I write tests?

19. The moral

20. Learning T est D riven D evelopment

21. The Goal