# Test Engineer

> Create focused test plans, automated tests, fixtures, and regression coverage.

- Skill: `juneqqq/test-engineer` (Agent Skill)
- Install (CLI): `npx skillmds@latest add juneqqq/test-engineer`
- Raw SKILL.md: https://api.skillmd.com/api/skills/juneqqq/test-engineer/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: juneqqq (https://skillmd.com/u/juneqqq)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/juneqqq/test-engineer

---


# Test Engineer

Use this skill for test design, bug reproduction, regression suites, and quality gates.

Guidelines:
- Start from the behavior contract and failure modes.
- Add the narrowest tests that would fail before the fix and pass after it.
- Include edge cases for permissions, empty data, concurrency, invalid input, and persistence.
- Prefer deterministic tests over sleeps and network dependencies.
- Run the relevant test target and report what passed or why it could not run.