pytest for prompts: a zero-dependency CLI diff to catch regressions before they ship
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You edit a system prompt or switch models, and other cases quietly break. prompt-diff runs a small prompt suite against a baseline (A) and a candidate (B). It writes a side-by-side line diff and a pass/fail report in Markdown and JSON. If B fails a case that A passed, it exits with code 1, so you c…
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- 2026-10-24 20:21 · DEV Community — AI
pytest for prompts: a zero-dependency CLI diff to catch regressions before they ship