react-testing skillA
react-testing is agent-read markdown (skill) from fusengine/agents: Testing Library for React 19 - render, screen, userEvent, waitFor, Suspense. Use when writing tests for React components with Vitest..
Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.
What the file says
<objective> Tests React 19 components with Testing Library and Vitest: user-centric queries prioritized by accessibility (`getByRole` first, `getByTestId` last resort), `userEvent` for realistic interactions (never `fireEvent`), `findBy`/`waitFor` for async assertions (never `setTimeout`), and MSW for API mocking (never direct fetch mocking). 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. </objective> # 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 …
Read the whole file at its exact version.
How to install
mdr add fusengine/agents/react-testing@git:20260904.5f1d30fmdr add fusengine/agents/react-testing@sha256:8ad91026b04daeb3Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
[](https://markdownregistry.com/a/art_ke5dog2tfinssfpv)
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Versions
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260904.5f1d30f latest | 2026-09-04 | 5f1d30f | 5,870 B | A | view · diff |
| git:20260729.3b91eed | 2026-07-29 | 3b91eed | 5,841 B | A | view · diff |
| git:20260207.0a3cd21 | 2026-02-07 | 0a3cd21 | 5,060 B | A | view · diff |
| git:20260131.b40f0a1 | 2026-01-31 | b40f0a1 | 5,044 B | A | view · diff |
| git:20260131.7d8568c | 2026-01-31 | 7d8568c | 5,615 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (5870 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
fusengine/agents · 28 stars · license MIT · pushed 2026-09-24 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_ke5dog2tfinssfpv GET https://markdownregistry.com/api/v1/resolve?ref=fusengine/agents/react-testing GET https://markdownregistry.com/api/v1/blob/8ad91026b04daeb36586fb76ee456a76f226f145f864393c62bf35dc71e85c2c
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