This document discusses continuous delivery of legacy applications. It begins with introductions and definitions of key terms like continuous delivery, legacy code, and types of testing. It then discusses challenges like refactoring legacy code without tests and proposes solutions like using Selenium for GUI testing and TestBox for unit testing. The document recommends strategies for continuous integration and delivery pipelines to enable one click deployments. It concludes by providing resources for learning more about topics like Cucumber and Selenium WebDriver.

1. Continuous Delivery of
your Legacy Application
Kev McCabe
Tuesday 10th November 2015
1

2. Who Am I?
• Freelance Code Smith & Agile Coach
• CF Developer Since 1996
• Scrum Master
• Kanban Practitioner
• Agile Coach
• T: @bigmadkev
• W: BigMadKev.com 2

3. SORRY NO LEGO THIS YEAR :-(
3
I apologize for any inconvenience caused

4. 4

5. What is Continuous
Delivery
Continuous Delivery is a software
development discipline where you build
software in such a way that the
software can be released to production
at any time.
Martin Fowler
http://martinfowler.com/bliki/ContinuousDelivery.html

6. What is legacy code?
Legacy Code Is Code Without Tests
Michael Feathers
Working Effectively with Legacy Code

7. Types of Testing
7
GUI
Integration
Unit Tests
Exploratory
testing

8. Real World Testing Pyramid
8
GUI
Integration
Exploratory testing
Unit TestsManual Testing

9. 9
GUI
Unit Tests
Exploratory
testing
Humans
Selenium
TestBox

10. Refactoring
Without Tests Is Living Dangerously
Catch 22?

11. Web Apps
We have Selenium (-;
We’ll start from the outside and work in.

12. Selenium
What to test?
$$$ Paths
Don’t test everything!

13. TESTBOX
Unit Tests

14. Continuous Integration
Tools

15. Branching Strategies!
• Working on Mainline
• Branch for Release
• Branch by Feature

16. Pipeline
Delivery Pipeline
One Click Deployments

17. 17

18. 18

19. 19

20. 20

21. 21

22. 22

23. 23

24. 24

25. 25

26. 26

27. 27

28. 28

29. 29

30. 30

31. 31

32. 32

33. 33

34. 34

35. 35

36. 36

37. 37

38. 38

39. 39

40. 40

41. 41

42. 42

43. 43

44. What? the Crash Still?
Automate Everything!
Legacy Thinking!
Release More Frequently!
Sort out infrastructure!

45. Resources
https://cucumber.io/school
https://www.udemy.com/selenium-2-
webdriver-basics-with-java/

46. THANK YOU
Always happy to help, feel free to contact me
• E: kev@redgiraffes.co.uk
• T: @bigmadkev
http://cfml-craftsmanship.com/eclipseupdatesite