The document discusses test-driven development (TDD), noting that it leads to code that works, is proven to work, and has a lower defect rate due to cheaper bug fixing. TDD involves writing a failing test first, then code to pass that test, and refactoring the code. Benefits of TDD include shorter development cycles, a fast development process, satisfaction, clean code that works, and agile development practices.

1. Test-Driven Development
PyBonn Meeting – März 2013
Timo Stollenwerk

2. Testing ???

3. Do not break things!
Timo Stollenwerk

4. What do we get?
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Code that works
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Proof that is works
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Lower defect rate
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Cheaper bug fixing

5. Test-Driven Development

6. Test-Driven Development

7. Test-Driven Development

8. Test-Driven Development

9. What do we get?
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Shorter development
cycles
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Fast development
process
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Satisfaction
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Fun!

10. No code without a failing test

11. Make test pass (quickly)

12. Test

13. Fix

14. Refactor

15. What do we get?
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Clean Code that
works
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Agile code

16. Testing Pyramid

17. Test-Driven Development
Timo Stollenwerk
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