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Agent skill

React Native Testing

by HoangNguyen0403 in HoangNguyen0403/agent-skills-standard

Test React Native components with Jest and React Native Testing Library.

MITAuto-check passedMobile

Install React Native Testing

skills CLI
$ npx skills add HoangNguyen0403/agent-skills-standard --skill react-native-testing -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install HoangNguyen0403/agent-skills-standard react-native-testing --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/HoangNguyen0403/agent-skills-standard.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/react-native/react-native-testing .claude/skills/react-native-testing && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
react-native-testing
GitHub stars
572
Token cost
~647 tokens
SKILL.md length
220 words
Files
3 (incl. references)
Skills in repo
211
Repo updated
First seen
Licence
MIT

At a glance

Test React Native components with Jest and React Native Testing Library.

  • React Native Testing Library tests for React Native components
  • SKILL.md covers Priority: P1 (HIGH), Core Rule Anchors, Setup & Component Testing and Best Practices, plus 3 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
  • Tasks that involve Cross-platform mobile apps

What it does

React Native Testing is an agent skill from HoangNguyen0403/agent-skills-standard. Test React Native components with Jest and React Native Testing Library. Use when writing Jest or React Native Testing Library tests for React Native components.

Its SKILL.md is about 650 tokens, which your agent loads only when the skill is triggered. The skill folder holds 4 other files, including reference files (for example `evals/evals.json` and `references/testing-library.md`).

It sits in Mobile, covering Cross-platform mobile apps and Unit testing. It works with React Native, Testing Library and Jest. The repository describes itself as: A collection of Agent Skills Standard and Best Practice for Programming Languages, Frameworks that help our AI Agent follow best practies on frameworks and programming laguages. The licence is MIT.

When your agent uses it

  • React Native Testing Library tests for React Native components
  • Tasks that involve Cross-platform mobile apps
  • Tasks that involve Unit testing

Example prompts

  • “/react-native-testing”

What it can do on your machine

Read from SKILL.md and the folder at commit b529c2d. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md (its code samples are typescript).

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

React Native Testing loads about 647 tokens when it runs, and up to ~1.1k if it reads all its reference files. Until then it costs about 46 tokens; SKILL.md has 220 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~46
When it runs · the whole SKILL.md, loaded when a task matches
~647
With references · SKILL.md plus every file in references/, read only if the agent opens them
~1.1k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from HoangNguyen0403/agent-skills-standard at commit b529c2d, republished under its MIT licence (© HoangNguyen0403). 220 words, ~647 tokens.

Download SKILL.mdSave it as .claude/skills/react-native-testing/SKILL.md (or your agent's skills folder). This skill also uses 2 other files; get the full folder from GitHub.
name
react-native-testing
description
Test React Native components with Jest and React Native Testing Library. Use when writing Jest or React Native Testing Library tests for React Native components.

React Native Testing

Priority: P1 (HIGH)

Core Rule Anchors

  • [MOB-TEST-01] Tripartite Naming: Follow Method_Scenario_ExpectedBehavior.
  • [MOB-TEST-02] State & Component Invariant Rule: Assert on visible user outcomes and accessible UI elements; never inspect component internal state or props directly.
  • [MOB-TEST-03] Entity Invariant Rule: Test calculations, validations, and domain invariants; ban trivial echo assertions.
  • [MOB-TEST-04] Contract Testing Rule: Intercept network requests at HTTP boundary (MSW) or native module boundary; ban 1:1 pass-through mock echoing without contract assertions.
  • [MOB-TEST-05] Bug-First Regression Lock: Every PR resolving a bug ticket or with title fix(...) must introduce a test reproducing the defect prior to the fix.

Setup & Component Testing

  • Jest & RNTL: Use @testing-library/react-native for user-centric tests. Mock native modules with jest.mock().
  • Component Example:
tsx
test('increments counter on button press', () => {
  const { getByText, getByRole } = render(<Counter />);
  fireEvent.press(getByRole('button', { name: /increment/i }));
  expect(getByText('Count: 1')).toBeTruthy();
});

Best Practices

  • User-Centric: Use getByRole, getByText over testID. Use findBy* for async elements.
  • Integration > Unit: Test features, not implementation. Avoid brittle snapshots.
  • Coverage: Coverage is diagnostic and project-configured; verify risk-weighted critical paths rather than padding code for an arbitrary percentage.

Anti-Patterns

  • No Testing Implementation: Test behavior, not internals. Avoid testID overuse.
  • Banned Smells: Ban vague names, inspecting component state/props, echo assertions, and pass-through mocks.

References

See references/testing-library.md for RNTL setup, mocking providers, and integration flow examples.

Canonical response anchors

When this skill applies, preserve the following domain terminology or equivalent concrete examples in the answer when relevant:

  • Integration

  • RNTL

  • Additional task-grounded exact anchors: test behavior

© HoangNguyen0403, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 2 other files (references) in skills/react-native/react-native-testing of HoangNguyen0403/agent-skills-standard.

  • SKILL.md
  • evals/evals.json
  • references/testing-library.md

Open the folder on GitHubat commit b529c2d

Compare with similar skills

React Native Testing next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

React Native Testing compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
React Native Testing this skillHoangNguyen0403/agent-skills-standard572—~647Automated safety check: PassMIT
React Native Testingcallstackincubator/agent-skills1.7k—~1.8kAutomated safety check: PassMIT
Creating Reanimated Animationsgluestack/gluestack-ui5.3k—~2.4kAutomated safety check: PassNone
Cometchat React Native Testingcometchat/cometchat-skills132—~997Automated safety check: PassMIT
Jest Testing PatternsChrisWiles/claude-code-showcase6.1k7 repos~1.5kAutomated safety check: PassNone
Test Guidelinesgetsentry/sentry-react-native1.8k—~1.3kAutomated safety check: PassMIT

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  • React Native Testing

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    Generate React Native Reanimated animation code for React Native apps.

    5.3k GitHub stars~2.4k tokensUpdated 1 mo ago
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    6.1k GitHub starsUsed in 7 repos~1.5k tokens
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Works with

Categories

Questions about React Native Testing

What does React Native Testing do?

Test React Native components with Jest and React Native Testing Library. React Native Testing is an agent skill from HoangNguyen0403/agent-skills-standard. Test React Native components with Jest and React Native Testing Library.

When should I use React Native Testing?

React Native Testing fits situations like: React Native Testing Library tests for React Native components; tasks that involve Cross-platform mobile apps; tasks that involve Unit testing.

How do I install React Native Testing in Claude Code?

Run `npx skills add HoangNguyen0403/agent-skills-standard --skill react-native-testing -a claude-code`. Or copy the skill folder (skills/react-native/react-native-testing in HoangNguyen0403/agent-skills-standard) into .claude/skills/react-native-testing in your project. Claude Code loads it when a task matches its description.

How do I install React Native Testing in Codex?

Run `npx skills add HoangNguyen0403/agent-skills-standard --skill react-native-testing -a codex`. Or copy the skill folder (skills/react-native/react-native-testing in HoangNguyen0403/agent-skills-standard) into .agents/skills/react-native-testing in your project. Codex loads it when a task matches its description.

Can I use React Native Testing in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add HoangNguyen0403/agent-skills-standard --skill react-native-testing -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/react-native-testing, .gemini/skills/react-native-testing, .github/skills/react-native-testing and .opencode/skills/react-native-testing in your project.

What does React Native Testing need to run?

SKILL.md names no scripts, command-line tools or credentials: React Native Testing is instructions for the agent only.

Does React Native Testing access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is React Native Testing safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does React Native Testing use?

React Native Testing is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does React Native Testing use?

About 647 tokens (SKILL.md is roughly 2.6k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 477 tokens, read only when the agent opens those files.

What are the alternatives to React Native Testing?

Skills that share tags, products or a category with React Native Testing: React Native Testing (callstackincubator/agent-skills, 1.7k stars), Creating Reanimated Animations (gluestack/gluestack-ui, 5.3k stars), Cometchat React Native Testing (cometchat/cometchat-skills, 132 stars) and Jest Testing Patterns (ChrisWiles/claude-code-showcase, 6.1k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains React Native Testing?

HoangNguyen0403 (a GitHub user) maintains it in HoangNguyen0403/agent-skills-standard, which has 572 GitHub stars. The repository holds 211 skills in this directory. The repository was last updated on October 9, 2026.

Source: HoangNguyen0403/agent-skills-standard on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.