> Markdown version of [/events/world-congress-2026-europe/sessions/1013-back-to-the-roots](https://www.wearedevelopers.com/events/world-congress-2026-europe/sessions/1013-back-to-the-roots). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Back to the Roots: Testing in the Age of AI - **Date:** Thursday, Jul 9, 2026 - **Time:** 10:50–11:20 (30 min) - **Room:** Stage 9 - **Event:** World Congress 2026 Europe ## Recording [Watch recording](https://www.wearedevelopers.com/videos/100021-back-to-the-roots-testing-in-the-age-of-ai) ## Description AI is generating more and more code, and it’s getting better every day. Still, it’s far from perfect, and uncontrolled AI-generated code can quickly lead to bugs, frustration, and fragile systems. While tools and workflows are evolving rapidly, one thing remains unchanged: high-quality automated tests are the foundation of great software. AI coding agents thrive on fast feedback loops, and tests provide exactly that. However, not all tests are equally valuable, and poor tests can be just as harmful as having none. In this talk, we’ll go back to the roots of testing: what makes a test truly useful, how to design tests that guide both humans and AI, and how to leverage them to get the most out of AI-assisted development. ## Speaker ### [Jakub Janczyk](https://www.wearedevelopers.com/@jakub-janczyk) Senior Engineer at Kit ## Related talks at this congress - [Maintainable and Testable Code in the Age of AI](https://www.wearedevelopers.com/events/world-congress-2026-europe/sessions/1458-maintainable-and) — Dennis Doomen - [Your Tests Are Lying to You: Let AI Expose What You Missed](https://www.wearedevelopers.com/events/world-congress-2026-europe/sessions/978-your-tests-are-lying) — Maish Saidel-Keesing - [High Quality AI Development](https://www.wearedevelopers.com/events/world-congress-2026-europe/sessions/1459-high-quality-ai) — David Tielke - [Code Is Cheap. Software Isn’t.](https://www.wearedevelopers.com/events/world-congress-2026-europe/sessions/1114-code-is-cheap) — Markus Eisele