![Behavior Driven Development
•User stories
•Ubiquitous language
•Format:
- Given[context]
- When[event]
- Then[outcome]
•Power of:
- Business Analyst, Developer, Tester](https://image.slidesharecdn.com/testdriveondrivendevelopmentprocess-140824082807-phpapp01/85/Test-drive-on-driven-development-process-12-320.jpg)
Test drive on driven development process
- 1. TEST DRIVE ON DRIVEN DEVELOPMENT PROCESS By - Swathi Lakshmi Rajan
- 2. Agenda • What is Software Development Process? • Traditional development process • TDD • BDD • FDD • ATDD • Q & A session
- 3. What are we covering? • Test Driven Development • Behavior Driven Development • Feature Driven Development • Acceptance Test Driven Development
- 4. What are we not covering? • Model Driven Development • Domain Driven Development
- 5. Software Development process software development process or life cycle is a structure imposed on the development of a software product. ix phases involved
- 6. Traditional Development Process Copyrighted to: Manning Publications Co.
- 7. Common misconception: •TDD/ATDD is NOT about testing!!
- 8. Test Driven Development •Short development iterations •Based on requirements and unit test cases •Necessary code to pass the test cases •Refactor
- 9. Test Driven Development Source: http://joshldavis.com/
- 10. Benefits-Test Driven Development •Stability •Necessary code to pass the test cases •Refactor •Cut rework •Reduce bugs
- 11. Drawbacks-Test Driven Development •Programmers like to code, not to test •Big time investment •Additional Complexity •Effectiveness depends on developers
- 12. Behavior Driven Development •User stories •Ubiquitous language •Format: - Given[context] - When[event] - Then[outcome] •Power of: - Business Analyst, Developer, Tester
- 13. Examples-Behavior Driven Development A new frequent flyer starts off with Bronze status If she earns 300 points, she becomes a Silver Frequent Flyer Silver 300 points Gold 700 points Platinum 1500 points
- 15. Benefits-Behavior Driven Development •Deliver more valuable software •Faster & Reliable releases •Reduced maintenance costs
- 16. Challenges- Behavior Driven Development •Writing good scenarios takes practice •Requires high business engagement and collaboration
- 17. Feature Driven Development •Short iterations •Developing by Feature •Color coded UML •Delivers frequent, tangible working results at all steps
- 18. Feature Driven Development Yellow – Person / Organization Blue – Description Green – Place/ Thing Pink - Time Source: Palmer, SR, Felsing, JM.2002.p.124
- 19. Feature Driven Development Source: Palmer, SR, Felsing, JM.2002.p.57
- 20. Feature Driven Development Source: Palmer, SR, Felsing, JM.2002.p.77, 80
- 21. Feature Driven Development Source: Palmer, SR, Felsing, JM.2002.p.85
- 22. Benefits-Feature Driven Development •Bigger Projects •More novice developers •Critical projects
- 23. Drawbacks-Feature Driven Development •Not as powerful on smaller projects •High reliance on chief programmer
- 24. Acceptance Test Driven Development •Crystallize acceptance criteria •Develop right product
- 25. Acceptance Test Driven Development Begin with the end in mind -Stephen R. Covey
- 26. Acceptance Test Driven Development “It's not enough to know how to do things You must know why you do them.” – Harvey Mackay
- 27. Acceptance Test Driven Development Source: David Starr
- 28. Acceptance Test Driven Development As an administrator, I want users creating accounts to be required to choose secure passwords so that their accounts cannot be hacked by someone using a password guessing program.
- 29. Acceptance Test Driven Development Copyrighted to: Quality Tree Software Inc.
- 30. Acceptance Test Driven Development Copyrighted to: Quality Tree Software Inc.
- 31. Benefits- Acceptance Test Driven Development •Avoid misunderstood requirements •Thorough product testing •Earlier defect detection
- 32. Drawbacks-Acceptance Test Driven Development •Time constraint •Getting entire team to follow the process •Project progress may be slow due to additional work
- 33. Q & A
- 34. To dive deeper: ttp://dannorth.net/introducing-bdd/ ttp://lizkeogh.com/ ttp://testobsessed.com/wp-content/uploads/2011/04/atddexample.pdf