This document contains the summary of a presentation on shift-left testing. It introduces the speaker and defines shift-left testing as testing early in the software development life cycle (SDLC) to detect defects earlier. Potential issues with not doing shift-left testing include slowly receiving user feedback, testing becoming a bottleneck, delayed releases, and costly bugs. The benefits outlined include preventing issues earlier, detecting defects sooner, enhanced test coverage, streamlined workflows, and reduced costs. Key promoters are improving testability, cross-team collaboration, continuous integration/delivery, and growth mindset. Best practices discussed include proper planning, understanding requirements, specifying quality standards, and embracing automation. The takeaways encourage collaborating with developers and getting involved in

1. 聊聊測試左移
Jersey Su @ 台灣軟體工程學會專題演講

2. Who Am I?
• I am 哲西
• A Father, who lives in Taipei.
• A geek who loves testing.
• An explorer.
• Twitter: https://twitter.com/jersey_su
• LinkedIn: https://www.linkedin.com/in/jerseysu/
• Medium: https://medium.com/@loverjersey

3. Slido

4. Start your engine!

5. Larry Smith
Bugs are cheap when caught young

6. SDLC
https://birdeatsbug.com/blog/shift-left-testing

7. Potential Issue?
https://twitter.com/designtaxi/status/669954017066409984/pho
To receive the user feedback slowly

8. Potential Issue?
https://brilliant.org/daily-problems/flowing-through-a-bottlenec
Testing become the bottleneck

9. Potential Issue?
https://muhsan.com/long-flight-delay/
Delay release to production

10. Potential Issue?
https://kishorsharma69.wordpress.com/2015/09/15/bug-and-its-th
Costly bugs fixing

11. Potential Issue?
https://www.marketwatch.com/story/package-arrived-damaged-heres-what-to-do-in-this-order-201
Low quality product

12. Game Time!

13. Guess Guess who is the bug king!

14. Bug king game, the highest scores is the
winner.
• Meaningless pull request title - 0.5 point
• No pull-request description - 1 point
• The commit message does not follow the conventional commits - 1 point
• N files changes without any unit test / functional test - 1 point
• Merge without anyone reviewed - 3 point
• Begging you to approval the pull-request without any context - 10 point

15. Game start!
https://github.com/dwyl/contributing/issues/78
Scores?

16. Larry Smith
Bugs are cheap when caught young

17. SDLC
https://birdeatsbug.com/blog/shift-left-testing

18. Shift-Left testing model
https://birdeatsbug.com/blog/shift-left-testing

19. Why the shift-left testing?
https://www.coe.int/fr/web/internal-oversight/prevention-and-investigation-activ
Prevention the issue earlier

20. Why the shift-left testing?
http://shorturl.at/jvwRX
Testing to detect the defect earlier

21. The benefit of the shift-left testing
https://www.techarcis.com/shift-left-testing-explained-by-sunil-sehgal-of-techarc

22. The benefit of the shift-left testing
https://www.scrum.org/resources/blog/whats-good-code-coverage-h
Enhanced the test coverage

23. The benefit of the shift-left testing
https://trackvia.com/blog/workflow/6-steps-streamline-business-workf
Streamline the working flow

24. The benefit of the shift-left testing
https://knowledge.ulprospector.com/2909/pcc-5-ways-to-reduce-formula-cost-keep-consumers-h
Reduced the development / testing cost

25. The benefit of the shift-left testing
https://laravel-news.com/tips-to-speed-up-phpunit-tests
Speed up the release

26. The benefit of the shift-left testing
https://hackmd.io/@sysprog/software-failure
A real world issue

27. Key promoter to shift-left testing
https://newsroom.unsw.edu.au/news/business-law/3-problems-fines-not-reporting-positive-covi
Improve the code / environment testability

28. Key promoter to shift-left testing
https://www.glasscubes.com/improve-cross-team-collaborati
Crossteam collaboration

29. Key promoter to shift-left testing
https://www.atulhost.com/what-is-ci-cd
Do the CI and CD

30. Key promoter to shift-left testing
https://breezingminds.com/why-a-growth-mindset-is-essential-for-your-car
Mindset

31. Best practice of shift-left testing
https://www.quora.com/What-is-scrum-board
Proper planning

32. Best practice of shift-left testing
https://medium.com/doteveryone/knowledge-understanding-how-to-be-a-responsible-leader-in-a-digital-world-7f0bd
Totally understand the product requirement

33. https://ent.ltn.com.tw/news/breakingnews/2834129

34. Best practice of shift-left testing
https://commons.wikimedia.org/wiki/File:M%C4%83cin_Mountains_-_On_The_Way_Ba
Specify the quality guiding or standard

35. Best practice of shift-left testing
DevOps tools by phases and categories. Source: Bowman, 20
Embrase the tool and test automation

36. Take Away!
• Bugs are cheap when caught young .
• What’s the shift-left testing?
• Why the shift-left testing?
• The benefit of the shift-left testing.
• The best practice of the shift-left testing.

37. Take Away!
• Start to collaborate with your developer.
• Join the community, Test Corner, Ministry of testing.
• Find a mentor.
• It more blessed the to give than to receive.
• Growth mindset.
• Read, read and read. Try everything!

38. Q&A
Medium
Twitter
LinkedIn

39. THANK YOU!