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"All tests pass" is a claim, not evidence: 5 ways an agent gets to green without fixing anything

If you let Claude Code, Codex or Cursor run your tests, you've probably seen this: the agent says "all tests pass", you merge, and CI goes red. Or worse, CI goes green and the bug is still there. The agent usually isn't lying on purpose. It's summarizing what it remembers, and that memory can be ou…

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  1. 2026-11-14 02:47 · DEV Community — AI
    "All tests pass" is a claim, not evidence: 5 ways an agent gets to green without fixing anything

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