# Af Jest Unit Tests

> Write or debug Jest unit tests for pure functions, validation logic, or business rules. Use when creating test files, debugging failing unit tests, setting up Jest configuration, or following TDD Red-Green-Refactor workflow.

- Skill: `majiayu000/af-jest-unit-tests` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds add majiayu000/af-jest-unit-tests`
- Raw SKILL.md: https://api.skillmd.com/api/skills/majiayu000/af-jest-unit-tests/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Productivity
- Author: majiayu000 (https://skillmd.com/u/majiayu000)
- Updated: 2026-09-09
- Page: https://skillmd.com/skills/majiayu000/af-jest-unit-tests

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# Jest Unit Tests

## What to read

**TDD workflow (Red → Green → Refactor):**
→ [testing-guide.md#tdd-workflow](../../docs/guides/testing-guide.md#tdd-workflow)

**Jest setup, test structure, mocking, and fixtures:**
→ [testing-guide.md#unit-testing-with-jest](../../docs/guides/testing-guide.md#unit-testing-with-jest)

**Test best practices (naming, AAA pattern, independence):**
→ [testing-guide.md#best-practices](../../docs/guides/testing-guide.md#best-practices)

**Running tests and CI/CD integration:**
→ [testing-guide.md#running-tests](../../docs/guides/testing-guide.md#running-tests)

**For comprehensive testing rules and pitfalls:**
→ [af-testing-expertise/SKILL.md](../af-testing-expertise/SKILL.md)