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September 2025

ATDD: Don’t skip tests even for simple code
Learning the hard way: even “simple” code needs tests. Automated testing isn't just for big complex projects.
 • 
Valentina Jemuović
6
Why Unit Tests & E2E Tests don’t protect us in production
Watch now | Why do many test automation initiatives fail in reducing regression bugs?
 • 
Valentina Jemuović
2
1:37:14
From Unit Tests to Acceptance Tests - Why I shifted my focus?
I focused on HA & TDD for years. Why I shifted my focus to ATDD?
 • 
Valentina Jemuović
2
99% of devs think they practice CI — they don’t.
CI isn’t just having a pipeline. If you're not practicing TBD and don't have tests, then you are not practicing CI.
 • 
Valentina Jemuović
2
How to introduce ATDD in Legacy Code? (in 3 months)
You should stay with your Big Ball of Mud, and stay with your Messy Code. I'll explain why and what you can do instead.
 • 
Valentina Jemuović
2
Code Coverage vs Mutation Testing (Code Example)
How do you know if Unit Tests are protecting you against regression bugs? Code Coverage can't help, because it checks only whether you executed code…
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Valentina Jemuović
14
TDD in Legacy Code - Component Tests - Frontend
ATDD provides business-facing feedback, but the feedback loop is too long. That's why we need CTDD, which requires us to write Component Tests.
 • 
Valentina Jemuović
2
I worked with a difficult client who was reporting many bugs. He led me to discover ATDD.
Hundreds of emails. Many bugs reports. Constant changes. This is a story from my days as a Senior Developer and how I discovered ATDD (before I even…
 • 
Valentina Jemuović
2

August 2025

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