Test Driven Development

Explain how TDD is actually happening in a real programming case.

Transcript

1. Test Driven Development
2. What is TDD ?
3. The Red/Green/Refactor Cycle Refactor and clean the code Write test and watch it fails Write minimal code that makes that test pass
5. Write test.
10. Run test, watch it fails.
12. Write minimal code, pass the test.
14. Run test, watch it fails.
16. Write minimal code, pass the test.
18. Run test, watch it fails.
20. Refactor is the key
24. Run test, watch it fails.
26. Write minimal code, pass the test.
28. Run test, watch it fails.
30. Write minimal code, pass the test.
32. Run test, watch it fails.
34. Even more refactor.
36. Run test, watch it fails.
38. Write minimal code, pass the test.
40. Run test, watch it fails.
42. Ship code to production.
44. Refactor is the key, remember?
45. Refactoring is a disciplined technique for restructuring an existing body of code, altering its internal structure without changing its external behavior. - Martin Fowler
47. Run test, watch it fails.
49. Why should we use TDD ?
50. TDD start with the end of mind, and walks you through what is the next step you have to do to get the code working
55. 75% of a developer’s time is spent on debugging
56. TDD eradicates fear of change - Eric Elliott
57. 40%-80% fewer bugs in production* *https:/ /www.researchgate.net/publication/3249271_Guest_Editors'_Introduction_TDD--The_Art_ of_Fearless_Programming
58. Source https://www.codecademy.com/articles/tdd-red- green-refactor https://blog.cleancoder.com/uncle-bob/2014/1 2/17/TheCyclesOfTDD.html https://medium.com/javascript-scene/tdd-chan ged-my-life-5af0ce099f80 https://coralogix.com/log-analytics-blog/this-is- what-your-developers-are-doing-75-of-the-time -and-this-is-the-cost-you-pay/ https://pixabay.com/vectors/wow-bang-explosi on-pow-blast-155268/ https://heeris.id.au/2013/this-is-why-you-shoul dnt-interrupt-a-programmer/