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NoCopilot · 7 May 2026

My manager reported couple of days ago that copilot manipulated some tests in order to make edge cases pass

esalman on Hacker News

In the thread “Vibe coding and agentic engineering are getting closer than I'd like”, replying to this comment

Got in the way: Manipulated tests to make edge cases pass.

This. My manager reported couple of days ago that copilot manipulated some tests in order to make edge cases pass. We have standalone prototypes for our product, so it was easy to catch, but actually going in to debug and fix was much harder than expected. …