TRIM Your Automated Tests

on YouTube ↗35m

" summary

Introduces a concrete TRIM checklist with code examples and a modeling technique that maps actors to system layers so tests target the lowest risk layer possible, shows how to mock APIs to shrink UI tests, and demonstrates the data builder pattern for fast, reliable setup. Recommends running tests multiple times to detect flakiness, collecting videos logs and headers on failure, pruning legacy tests rather than hoarding them, and optimizing pipelines (examples include 7‑hour runs vs 12‑minute runs) to improve mean time to feedback.

AI-written summary · about

" chapters (12)

1. 0:00Introduction
2. 2:53Problems with automated testing
3. 8:26Introducing TRIMS model
4. 10:12Test automation triangle myth
5. 13:04Targeted testing via system modeling
6. 17:38Reliable and deterministic tests
7. 21:55Readable test names
8. 25:45Debugging failing tests
9. 28:11Clean code for test suites
10. 30:57Speed in tests
11. 33:23Applying TRIMS to suites
12. 34:47Q&A

" related talks

• 51mRedefining test automationRichard Bradshaw · SeleniumConf London 2019
• 26mKeeping Your Tests LeanMeaghan Lewis · SeleniumConf Berlin 2017
• 08mStop the Retries in Tests & Reruns of Failing TestAnand Bagmar · TestFlix 2020
• 47mEradicate Flaky TestsAnand Bagmar · Appium Conference 2021
• 57mAdvanced Testing Techniques: Tips from the trenchesRob Moore, Graeme Foster · NDC Sydney 2018
• 44mTesting the untestable - patterns and use cases analysisPiotr Stawirej · JDD 2023
• 44mTechniques to Eradicate Flaky TestsAnand Bagmar · Testing Talks Conference 2022 Melbourne
• 32mLiving on Crotches or UI Automation AntipatternsVadim Zubovich · TestCon Moscow 2017