# Test Writer

> Writes unit and integration tests. Use when asked to add tests, improve coverage, write a regression test for a bug, or set up a test file for existing code. Triggers include "write tests", "unit test", "regression test", "테스트 작성", "테스트 코드", "커버리지".

- Skill: `monglong0214/test-writer` (Agent Skill)
- Install (CLI): `npx skillmds@latest add monglong0214/test-writer`
- Raw SKILL.md: https://api.skillmd.com/api/skills/monglong0214/test-writer/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Integrations & APIs
- Author: MongLong0214 (https://skillmd.com/u/monglong0214)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/monglong0214/test-writer

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# test-writer

Write tests that fail before the fix and pass after it. Cover the boundary and the error
path, not just the happy path. One assertion target per test. Use the project's existing test
framework and file layout — do not introduce a new one.