Discussion on "Tests Are the Verification Layer: Proving Agent Generated Changes"

Alen Joy · 2026-09-22T03:33:04.685Z

🗓️ Last updated: September 2026 The coding agent reports that the feature is complete. The project compiles. Four tests pass. The fifth test was deleted because it represented "legacy behavior." Thi

Context windows are not free memory. Stuffing every log into the prompt slows the loop and hides the signal. I summarize tool output hard before the next turn.

Agreed, dumping raw logs into the prompt mostly buries the one line that matters. The catch from a verification angle is that a summary can hide exactly the thing you needed to see. "Tests passed" can quietly mean one was skipped or a warning got dropped along the way.

What I'd do is keep two copies. A tight summary for the agent's next turn, and the full output stored as an artifact that CI and the reviewer can check. I'd also make the summariser keep failures, skips and warnings word for word, and only compress the passing noise.

Code reviews consume more hours than writing the actual code. Engineering time shifts entirely toward verification now, and the bottleneck slows down every single release.

Writing code was never really the expensive part. Deciding what it should do and checking that it does was always the hard bit. Agents just made that impossible to ignore.

So review time has to be protected. Anything a machine can check should be checked before a person opens the PR. Changes stay small. Reviewers spend their attention on changed test expectations and on whether the intent is right, not on rereading every line.

If the agents still produce more than the team can get through, slow the agents down. A pile of unreviewed PRs looks like progress but isn't.

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Tests Are the Verification Layer: Proving Agent Generated Changes

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