Strategic Testing Decisions - Build Stuff 2021

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 Partner/Developer @Flowing “I help development teams in making technical decisions” Interested? Contact me @TheStrazz86
3. Why am I here? _
4. Help making mindful decisions about software testing _
5. Copyright by Nintendo (Miyamoto, please don’t sue me)
6. No Animals Were Harmed in the Making of This Slide
7. “No Silver Bullet” _
11. How to choose the right testing strategy for a product? _
12. Let’s perform a cost–benefit analysis about testing _
13. What is the cost of testing? _
14. Opportunity Cost _
17. Testing is not “free” _
18. What are the benefits of testing? _
19. What is a test? _
20. “Tests are just one form of feedback” Kent Beck https://blogs.oracle.com/javamagazine/interview-with-kent-beck
22. A feedback about correctness _
23. “Tests are just one form of feedback” Kent Beck https://blogs.oracle.com/javamagazine/interview-with-kent-beck
24. Market is the only real feedback to test new ideas _
25. Help making mindful decisions about software feedbacks _
26. Are tests the right form of feedback for your context? _
27. 3X Model by Antony Marcano @ RiverGlide
28. Falk2, CC BY-SA 4.0, via Wikimedia Commons
29. In Explore phase, 90% of your code could be waste _
30. Do you want to test it? _
31. Tests needed in each phase of 3X Model
32. Some consideration on Explore _
33. How to understand what to test? _
34. Let the evolution decide _
35. Spike and Stabilize _ Video by Dan North
36. How to quickly have a feedback from the market? _
37. Put it in production, now. _ Walking Skeleton on crutches by Gojko Adzic
38. What happens if something breaks? _
40. BlueGreenDeployment by Martin Fowler
41. CanaryRelease by Martin Fowler
42. How to reduce waste? _
43. User Research and Prototyping _
44. Accattatevillʼ (“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/build-stuff
45. Thanks Francesco Strazzullo strazz@flowing.it