Uploaded byAndrii Dzynia
What does it mean to be a test engineer?
The document discusses the role and insights of a test engineer, drawing from Andrii Dzynia's experience in software engineering and his current position at Spotify. Key learnings include the importance of critical thinking, recognizing patterns of failure, and the necessity of early defect detection in the testing process. It emphasizes that testing is a continuous process that requires effective communication and collaboration within teams to improve product quality.
More Related Content
![AI and the Future of Work [TUG-CO, 11/15/23]](https://cdn.slidesharecdn.com/ss_thumbnails/aiandthefutureofworktug-conov152023-231116175445-e711e59c-thumbnail.jpg?width=640&height=640&fit=bounds)
Similar to What does it mean to be a test engineer?
![[QE 2018] Paul Gerrard β Automating Assurance: Tools, Collaboration and DevOps](https://cdn.slidesharecdn.com/ss_thumbnails/automatingassurancegerrard-180629130855-thumbnail.jpg?width=640&height=640&fit=bounds)
What does it mean to be a test engineer?
- 1. WHAT DOES ITMEANTO BE ATEST ENGINEER? Andrii Dzynia http://bit.ly/1GYquoR
- 2. MY BACKGROUND β’ 8years in software engineering β’ started as a test engineer in a team of 20 testers β’ currently working on improving product quality and development productivity at Spotify https://www.linkedin.com/in/andriidzynia@adzynia
- 3.
- 4. LET ME SHOWYOUTHEPROCESS video: https://www.dropbox.com/s/un7m49kdgeuzsbz/test-session- andrii.mov?dl=0
- 5.
- 6.
- 7. WHAT DID ILEARN? β’ Software always has bugs. If you have not found any, does not disprove their existence β’ Developers do not spend much time looking for edge cases, testers do
- 8. WHAT I WANTEDYOUTO LEARN? Testingis not a set of artefacts.
- 9. TESTING IS APROCESS. @adzynia
- 10.
- 11. GUESS WHAT BUGMARCIN WAS REFERRINGTO?
- 12. MORE LESSONS LEARNED β’People are different. It is hard to predict every single combination when user can get stuck β’ Think slower, sometimes
- 13. WHAT MAKESYOU ATEST ENGINEER? Criticalthinking Fault models Patterns recognition @adzynia
- 14.
- 15. FAULT MODELS βFrom themodel, the designer or user can predict the consequences of a particular fault.β - Wikipedia video: https://www.youtube.com/watch?v=rEumMkAhwzA
- 16.
- 17. BASED ON EXPERIENCEBRAIN RECOGNISES SEQUENCES WHICH LEADSTO UNDESIRED OUTCOME. NOTE: BE CAREFUL WITH FAULTY ASSUMPTIONS. FACE ONTHE MOON SURFACE IS PAREIDOLIA. βPareidolia is a psychological phenomenon when the mind perceives a familiar pattern of something where none actually exists.β - Wikipedia
- 18. LOOK FOR PATTERNSWITH HIGH FAILURE RISK. video: https://www.youtube.com/watch?v=qoQssWPRNR0
- 19.
- 20.
- 21. COMMUNICATION CAN BEA PROBLEM http://dilbert.com/strip/1989-05-31
- 22. SOLUTION WAS Create a#slack channel Start asking video integration questions Rise bugs early and facilitate conversations
- 23. DID WE PREDICTEDALL DEFECTS BEFORETESTING? SURELY, NOT. Data collected by Stefan Rungardt
- 24. BUT HOW DIDTHATHELP? Integration ended up to be much easier Testing started earlier # of production issues was low
- 25. WASTHAT EASY? Not really.Youhave to ask questions people do not want to hear http://media2.giphy.com/media/wrTHBbla7suPu/giphy.gif
- 26. Tester: Shall videobe playing when I lock a screen? Programmer: I do not know. Tester: who can know? Programmer: Product manager? Product manager: I do not know. Tester: who can know? Product manager: letβs take a look howYoutube does it. After a while we ο¬gured why video has to be paused when you lock a screen. Licensing constraints.
- 27. DEFECT PREVENTION VS DEFECT DETECTION βBugsare so 90sβ
- 28.
- 29. KEEPYOU WORK ENVIRONMENT INA GOOD SHAPE β’ engineering quality β’ product quality β’ strive for improvements
- 30. ENGINEERING QUALITY β’ Starttesting as early as possible β’ Build safety nets β’ Fix bugs as fast as they occur β’ Conduct root-cause analysis and take actions http://www.slideshare.net/AndrewDzynia/quality-built-in
- 31. PRODUCT QUALITY β’ Productsuccess metrics Time to ο¬rst video frame Number of users streaming video content Average viewing time, etc. β’ Number of production defects
- 32. SPOTIFYTEST CERTIFIED MODEL Inspiredby Google https://mike-bland.com/2011/10/18/test-certiο¬ed.html
- 33. TAKE AWAYS β’ Testingis a process, not a set of artefacts β’ Cost of defect can be lowered.Think about that β’ Find ways to inο¬uence quality on organization level. It is hard, but possible, even for a test engineer
- 34.