The Worst of Legacy Code - Forensic Development

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Llewellyn Falco

Technology

Bug #54

If a home , auto and personal loan are
taken out by tom, 3 versions of tom
appear in the database.

Pop Quiz: Question 2
To get this code to run, does the
follow Code do when called with
“ntsc” as the TvType?

A) Creates 30 Frames #30 - 0
B) Throws an Exception
C) Other
D) Run it to find out

Pop Quiz: Question 2
To get this code to run, how should
you handle
web.Headers["TvFormat"]

A) Peel
B) Slice

Pop Quiz: Question 3
To get this code to run, how should
you handle
maker.CreateFrame("" + i);

A) Peel
B) Slice

Resources
VS 2010 / MsTest / Code Coverage

Mock Utility : RhinoMock
http://www.ayende.com/projects/rhino-mocks.aspx

Honorable Mention: TypeMock
http://www.typemock.com/
( good but expensive $$$ )

What we offer
• Day Classes on site
•Single day class to educate & train
employees on a single aspect of agile

• On site coaching
•Minimum 2 weeks working on site with
employees on their stuff.
•Training/Mentoring
•Setup of framework
•Source Control
•Automated Builds
•Continuous integration
•Work environment

Contact
Jason Kerney
jason.kerney@gmail.com

Llewellyn Falco
info@spunlabs.com

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The Worst of Legacy Code - Forensic Development

1. Worst of The Legacy Code : Forensic Development By Jason Kerney & Llewellyn Falco

2. Bug #54 If a home , auto and personal loan are taken out by tom, 3 versions of tom appear in the database.

3. Fixing Legacy Code

4. Fixing Legacy Code

5. The Peel

6. The Peel

7. 5

8. 5

9. 5

10. 5

11. 5

12. 5

13. 5

14. 6

15. 6

16. 6

17. 6

18. The Slice

19. The Slice return sample

20. 8

21. 8

22. 8

23. 8

24. 8

25. 8

26. 8

27.

28.

29.

30.

31.

32.

33.

34.

35.

36.

37.

38.

39. return sample return sample

40. return sample return sample

41. Pop Quiz: Question 2

42. Pop Quiz: Question 2 To get this code to run, does the follow Code do when called with “ntsc” as the TvType? A) Creates 30 Frames #30 - 0 B) Throws an Exception C) Other D) Run it to find out

43. Pop Quiz: Question 2

44. Pop Quiz: Question 2 To get this code to run, how should you handle web.Headers["TvFormat"] A) Peel B) Slice

45. Pop Quiz: Question 3

46. Pop Quiz: Question 3 To get this code to run, how should you handle maker.CreateFrame("" + i); A) Peel B) Slice

47. Resources

48. Resources VS 2010 / MsTest / Code Coverage Mock Utility : RhinoMock http://www.ayende.com/projects/rhino-mocks.aspx Honorable Mention: TypeMock http://www.typemock.com/ ( good but expensive $$$ )

49. What we offer • Day Classes on site •Single day class to educate & train employees on a single aspect of agile • On site coaching •Minimum 2 weeks working on site with employees on their stuff. •Training/Mentoring •Setup of framework •Source Control •Automated Builds •Continuous integration •Work environment

50. Contact Jason Kerney jason.kerney@gmail.com Llewellyn Falco info@spunlabs.com

The Worst of Legacy Code - Forensic Development

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