Strategic Testing Decisions

Many CTOs or Team leaders struggle to have an effective testing strategy. While having good coverage and a good mix of test types, the number of bugs in production is always quite high and the throughput of the team is not skyrocketing. Why? I will try to answer in this talk.

We will cover how to apply strategic decision-making to testing, trying to find the right test for the right job. And beware, no testing could be a completely fine testing strategy.

Transcript

1. Strategic Testing Decisions
2. Francesco Strazzullo (AKA Strazz) @TheStrazz86 Interested in #SoftwareDecisionMaking? Contact me! Ego Slide
3. Why am I here? _
4. Help making mindful decisions about software testing _
8. There are some hidden trade-offs about software testing _
9. Copyright by Nintendo (Miyamoto, please don’t sue me)
10. No Animals Were Harmed in the Making of This Slide
11. “No Silver Bullet” _
12. How to choose the right testing strategy for a product? _
13. Let’s perform a cost–benefit analysis about testing _
14. What is the cost of testing? _
15. Opportunity Cost _
18. Testing is not “free” _
19. What are the benefits of testing? _
20. What is a test? _
21. “Tests are just one form of feedback” Kent Beck https://blogs.oracle.com/javamagazine/interview-with-kent-beck
23. A feedback about correctness _
24. “Tests are just one form of feedback” Kent Beck https://blogs.oracle.com/javamagazine/interview-with-kent-beck
25. Market is the only real feedback to test new ideas _
26. Help making mindful decisions about software feedbacks _
27. Are tests the right form of feedback for your context? _
28. 3X Model by Kent Beck
29. Falk2, CC BYSA 4.0, via Wikimedia Commons
30. In Explore phase, 90% of your code could be waste _
31. Do you want to test it? _
32. Tests needed in each phase of 3X Model
33. Some consideration on Explore _
34. How to understand what to test? _
35. Let the evolution decide _
36. Spike and Stabilize _ Video by Dan North
37. How to quickly have a feedback from the market? _
38. Put it in production, now. _ Walking Skeleton on crutches by Gojko Adzic
39. What happens if something breaks? _
41. BlueGreenDeployment by Martin Fowler
42. CanaryRelease by Martin Fowler
43. How to reduce waste? _
44. User Research and Prototyping _ Video by Dan North
45. Accattatevill’ (“buy it” in Neapolitan) https://www.avanscoperta.it/en/training/decision-making-for-software-development-teams/ https://leanpub.com/decision-making-for-software-development-teams/c/MalagaDecisionMaking
46. Thanks Francesco Strazzullo strazz@flowing.it