# Gsd Adversarial Review Pattern

> Catch hidden test failures by running adversarial review on sparse-data edge cases before final push

- Skill: `vamseeachanta/gsd-adversarial-review-pattern` (Agent Skill)
- Install (CLI): `npx skillmds@latest add vamseeachanta/gsd-adversarial-review-pattern`
- Raw SKILL.md: https://api.skillmd.com/api/skills/vamseeachanta/gsd-adversarial-review-pattern/raw
- Safety review: PASS (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: vamseeachanta (https://skillmd.com/u/vamseeachanta)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/vamseeachanta/gsd-adversarial-review-pattern

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# GSD Adversarial Review Pattern

After implementing analytics functions that handle sparse or missing data, run a focused adversarial review on the exact diff before pushing. Specifically: (1) verify test assertions match the actual filter logic (not just fixture coincidence), (2) check for silent failures where data passes validation but shouldn't, (3) re-run full test suite after fixes. This catches TDD precision errors where tests accidentally pass on incomplete fixtures but would fail on real data.