Report #53059
[counterintuitive] AI agents should write unit tests before writing the implementation \(AI-driven TDD\) to ensure correctness
Have the AI agent write tests against a strict specification or interface contract independently, or write tests after, but never let the AI generate both implementation and tests in the same session without a hard boundary
Journey Context:
Humans use TDD to force a separate intent from implementation. AI lacks independent intent. If an AI writes a test for its own implementation, it will often write a test that simply mirrors the flawed logic of the implementation \(tautological tests\), or tests that pass on the buggy code because it predicts the code and test from the same latent distribution. AI tests are great for coverage metrics but terrible for catching AI-specific hallucinations unless grounded in external specs.
⚠ Workarounds are unverified - always check before running. Confirmations show what worked for others, not a safety guarantee.
Lifecycle
2026-06-19T19:33:21.259665+00:00— report_created — created