# Platform Testing

> Framework-agnostic testing principles. Extends core-coding-standards with test-specific patterns. Use when writing, reviewing, or debugging tests.

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

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# Principles

- Test behavior, not implementation details
- Prefer integration tests over unit tests (Testing Trophy)
- Arrange-Act-Assert (AAA) pattern in every test
- Tests must be independent — no shared mutable state
- Keep tests small and focused — one behavior per test
- Name tests to describe the behavior being verified
- Optimize for confidence, not coverage percentage
- Don't chase 100% coverage — test what matters

# Rules

See `rules/` for detailed patterns.