# Testing Rules

> Use when user wants to Testing rules - Vitest 4, Playwright 1.58, static analysis/Biome, Zod 4 validation, coverage strategy, MSW mocking

- Skill: `nadav011/testing-rules` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add nadav011/testing-rules`
- Raw SKILL.md: https://api.skillmd.com/api/skills/nadav011/testing-rules/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: Nadav011 (https://skillmd.com/u/nadav011)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/nadav011/testing-rules

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# Testing & Quality Rules v24.7.0

> On-demand rules for testing and quality tooling.

## Quick Reference

| Topic | Reference File |
|-------|---------------|
| Vitest 4 & Testing Patterns | quality/testing.md |
| Playwright MCP E2E | testing/playwright-mcp.md |
| Static Analysis (Biome, Semgrep) | quality/static-analysis.md |
| Zod 4 Validation | quality/zod.md |

## Usage
When writing tests, read `testing.md` for Vitest patterns. For E2E, read `playwright-mcp.md`. For validation, read `zod.md`.