Slides from a TDD presentation held at Smartbear Sthlm in April 2013.

1. TDD
Tuesday, April 16, 13

2. - Short history of software methods
- What is TDD?
- Prime number example
- Tips & Traps
- Try it out
- Roundup
Agenda
Tuesday, April 16, 13

3. Tuesday, April 16, 13

4. 90’s
Object Orientation
replaces ‘procedural’
History
Tuesday, April 16, 13

5. 90’s
High Ceremony Methodology
History
Tuesday, April 16, 13

6. eXtreme
Programming
History
Tuesday, April 16, 13

7. agile etc.....
History
Tuesday, April 16, 13

8. Tuesday, April 16, 13

9. red
green
refactor
What?
Tuesday, April 16, 13

10. Listening, Testing, Coding, Refactoring.
That's all there is to software. Anyone
who tells you different is selling
something. - Kent Beck
What?
Tuesday, April 16, 13

11. write a test
that fails
What?
Tuesday, April 16, 13

12. write a spec
that fails
What?
Tuesday, April 16, 13

13. thinking about
the interface
(design)
What?
Tuesday, April 16, 13

14. understand
What?
Tuesday, April 16, 13

15. setup
execute
validate
clean up
What?
Tuesday, April 16, 13

16. unfail that
test
What?
Tuesday, April 16, 13

17. only unfail
that test
What?
Tuesday, April 16, 13

18. refactor
What?
Tuesday, April 16, 13

19. NO NEW
FUNCTIONALITY
What?
Tuesday, April 16, 13

20. you aren’t
gonna need it
(yagni)
What?
Tuesday, April 16, 13

21. keep it simple
stupid
(kiss)
What?
Tuesday, April 16, 13

22. red
green
refactor
What?
Tuesday, April 16, 13

23. personal benefits:
pride
sense of accomplishment
security
What?
Tuesday, April 16, 13

24. organisational benefits:
stability
predictability
readability
maintainability
What?
Tuesday, April 16, 13

25. Tuesday, April 16, 13

26. - Short history of software methods
- What is TDD?
- Prime number example
- Tips & Traps
- Try it out
- Roundup
Agenda
Tuesday, April 16, 13

27. Tuesday, April 16, 13

28. coding
guidelines for
tests?
Tips & Traps
Tuesday, April 16, 13

29. be lenient
on DRY
Tips & Traps
Tuesday, April 16, 13

30. one test per
method?
Tips & Traps
Tuesday, April 16, 13

31. one test class
per class?
Tips & Traps
Tuesday, April 16, 13

32. how
much?
Tips & Traps
Tuesday, April 16, 13

33. what about
user
interfaces?
Tips & Traps
Tuesday, April 16, 13

34. code bases
without test
coverage?
Tips & Traps
Tuesday, April 16, 13

35. design &
architecture
Tips & Traps
Tuesday, April 16, 13

36. mocking?
Tips & Traps
Tuesday, April 16, 13

37. mock
frameworks
Tips & Traps
Tuesday, April 16, 13

38. practice
Tips & Traps
Tuesday, April 16, 13

39. classic vs
london
Tips & Traps
Tuesday, April 16, 13

40. double
TDD loop
Tips & Traps
Tuesday, April 16, 13

41. @froderik
www.highlevelbits.com
photo credits to flickr users
indigoprime
Photochiel
martinlabar
and Michel Filion
in order of appearance
Tuesday, April 16, 13

42. Tuesday, April 16, 13

43. - prime numbers again
- roman numeral
- first search hit on “kata catalogue”
- something from the real world
- OO vs functional
- cycle size
Exercises IN PAIRS
Tuesday, April 16, 13