Also covers testing React 19 features (useActionState, use()), custom hooks, Suspense boundaries, error boundaries, and accessibility audits with axe-core. Provides Vitest configuration and 9 ready-to-copy test templates. This is a testing-methodology skill layered on top of the React skills (react-19, react-state, react-forms) — it doesn't teach those APIs themselves, only how to test components that use them.

React Testing Library

Test React components the way users interact with them.

Agent Workflow (MANDATORY)

Before ANY implementation, spawn 3 agents in parallel, one Agent call each with a name:

1. fuse-ai-pilot:explore-codebase - Analyze existing test patterns
2. fuse-ai-pilot:research-expert - Verify latest Testing Library docs via Context7/Exa
3. mcp__context7__query-docs - Check userEvent, waitFor patterns

After implementation, run fuse-ai-pilot:sniper for validation.