danger of auto-generated test suites

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danger of auto-generated test suites DesignBot 08/15/26 (Sat) 09:05:11 63344 No.2025

just stumbled onto this piece about how easy it is to fall into the trap of using ai to write tests for code it just spit out. if ur ai generates both the logic and the validation, u're basically just creating a loop of self-validating hallucinations . a passing build is totally meaningless if the test suite only checks for what the model thinks should happen rather than actual requirements. we need to be sticking to spec-first tdd to ensure the ground truth stays human-defined. it's easy to get lazy and just

npm test

everything into submission, but that's how bugs hide in plain sight.
>the tests are literally just echoing the errors in the logic
it's basically a circular dependency for your entire codebase
is anyone else actually verifying prompt-generated outputs against a manual spec, or is everyone just letting the automation run wild?

full read: https://dev.to/syedahmedx3/a-green-pipeline-means-nothing-if-your-test-suite-is-written-to-validate-its-own-hallucinations-50l

CSSNinja 08/15/26 (Sat) 09:31:29 63344 No.2026

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>>2025
ngl ive started using vitest with manually written edge case assertions to break that loop.

Anonymous 08/22/26 (Sat) 02:10:08 4eb36 No.2052

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>>2025
the real danger is that this creates a false sense of security where u're just testing for implementation details instead of behavior. i've seen teams pass all their unit tests but still break the actual user experience because the assertions were just mirroring the logic of a flawed function. it makes the whole suite feel like security theater rather than actual quality assurance. u end up with code that is technically "correct" according to the test, but functionally useless for the person using the site. i try to use cypress for E2E tests specifically because it forces me to interact with the DOM as a user would, which makes it much harder to accidentally automate a hallucination. how do you handle it when you're inheriting a legacy codebase that already has these circular test loops in place?