Unit Tests
Khan/wonder-blocks
Jest + React Testing Library best practices for Wonder Blocks unit tests.
Write and review React/TypeScript tests for Sentry's frontend using Jest and React Testing Library.
Install React Testing
$ npx skills add getsentry/sentry --skill react-testing -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install getsentry/sentry react-testing --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/getsentry/sentry.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/react-testing .claude/skills/react-testing && rm -rf skills-srcUse ~/.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/
Install the "react-testing" agent skill from https://github.com/getsentry/sentry/tree/master/.agents/skills/react-testing into .claude/skills/react-testing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "react-testing", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/getsentry/sentry/tree/master/.agents/skills/react-testingType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add getsentry/sentry --skill react-testing -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install getsentry/sentry react-testing --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/getsentry/sentry.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/react-testing .agents/skills/react-testing && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "react-testing" agent skill from https://github.com/getsentry/sentry/tree/master/.agents/skills/react-testing into .agents/skills/react-testing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "react-testing", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add getsentry/sentry --skill react-testing -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install getsentry/sentry react-testing --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/getsentry/sentry.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/react-testing .cursor/skills/react-testing && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "react-testing" agent skill from https://github.com/getsentry/sentry/tree/master/.agents/skills/react-testing into .cursor/skills/react-testing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "react-testing", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/getsentry/sentry.git --path .agents/skills/react-testing--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add getsentry/sentry --skill react-testing -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install getsentry/sentry react-testing --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/getsentry/sentry.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/react-testing .gemini/skills/react-testing && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "react-testing" agent skill from https://github.com/getsentry/sentry/tree/master/.agents/skills/react-testing into .gemini/skills/react-testing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "react-testing", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install getsentry/sentry react-testingInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add getsentry/sentry --skill react-testing -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/getsentry/sentry.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/react-testing .github/skills/react-testing && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "react-testing" agent skill from https://github.com/getsentry/sentry/tree/master/.agents/skills/react-testing into .github/skills/react-testing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "react-testing", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add getsentry/sentry --skill react-testing -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install getsentry/sentry react-testing --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/getsentry/sentry.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/react-testing .opencode/skills/react-testing && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "react-testing" agent skill from https://github.com/getsentry/sentry/tree/master/.agents/skills/react-testing into .opencode/skills/react-testing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "react-testing", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
react-testing- GitHub stars
- 46k
- Token cost
- ~2.2k tokens
- SKILL.md length
- 326 words
- Files
- 1
- Skills in repo
- 29
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Write and review React/TypeScript tests for Sentry's frontend using Jest and React Testing Library.
- Works in 4 steps: getByRole - Primary selector for most… → getByLabelText/getByPlaceholderText -… → getByText - For non-interactive elements → …
- Editing tests in static/ (.spec.tsx)
- SKILL.md covers Testing Philosophy, Imports, Query Priority (in order of… and Best Practices
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
React Testing is an agent skill from getsentry/sentry, published by the product's own GitHub organization. Write and review React/TypeScript tests for Sentry's frontend using Jest and React Testing Library. Use when adding or editing tests in static/ (.spec.tsx), writing component/hook tests, mocking API responses with MockApiClient, testing routing or network requests, or when asked to "write a frontend test", "add a React test", "test this component", or "fix a flaky RTL test".
Its SKILL.md is about 2.2k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Testing & QA, covering Unit testing and React components. It works with React, Sentry, Jest and Testing Library. The repository describes itself as: Developer-first error tracking and performance monitoring.
When your agent uses it
- Editing tests in static/ (.spec.tsx)
- Writing component/hook tests
- Mocking API responses with MockApiClient
- Testing routing
Example prompts
- “write a frontend test”
- “add a React test”
- “test this component”
- “/react-testing”
Workflow steps
4 steps, taken from the first numbered list in SKILL.md.
- getByRole - Primary selector for most elements
- getByLabelText/getByPlaceholderText - For form elements
- getByText - For non-interactive elements
- getByTestId - Last resort only
What it can do on your machine
Read from SKILL.md and the folder at commit 99b4c2b. 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 Testing loads about 2.2k tokens when it runs. Until then it costs about 98 tokens; SKILL.md has 326 words of instructions outside code blocks.
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
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 326 words (~2,208 tokens).
“Always import from sentry-test/reactTestingLibrary, not directly from @testing-library/react:”
- name
- react-testing
Files
Just SKILL.md in .agents/skills/react-testing of getsentry/sentry.
Open the folder on GitHubat commit 99b4c2b
Compare with similar skills
React 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.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| React Testing this skillgetsentry/sentry | 46k | — | ~2.2k | Automated safety check: Pass | Custom licence | |
| Unit TestsKhan/wonder-blocks | 163 | — | ~4.2k | Automated safety check: Pass | MIT | |
| React Testingaffaan-m/ECC | 275k | 1 repos | ~3.3k | Automated safety check: Pass | MIT | |
| Hilla TestAI-Unified-Process/marketplace | 141 | — | ~3.9k | Automated safety check: Warn | Apache-2.0 | |
| React TestingHoangNguyen0403/agent-skills-standard | 571 | — | ~1.3k | Automated safety check: Pass | MIT | |
| Typescript Rulessoftspark/ai-toolkit | 179 | — | ~2.7k | Automated safety check: Notes | Apache-2.0 |
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Related
Works with
Categories
Questions about React Testing
What does React Testing do?
Write and review React/TypeScript tests for Sentry's frontend using Jest and React Testing Library. React Testing is an agent skill from getsentry/sentry, published by the product's own GitHub organization. Write and review React/TypeScript tests for Sentry's frontend using Jest and React Testing Library.
When should I use React Testing?
React Testing fits situations like: editing tests in static/ (.spec.tsx); writing component/hook tests; mocking API responses with MockApiClient; testing routing.
How do I install React Testing in Claude Code?
Run `npx skills add getsentry/sentry --skill react-testing -a claude-code`. Or copy the skill folder (.agents/skills/react-testing in getsentry/sentry) into .claude/skills/react-testing in your project. Claude Code loads it when a task matches its description.
How do I install React Testing in Codex?
Run `npx skills add getsentry/sentry --skill react-testing -a codex`. Or copy the skill folder (.agents/skills/react-testing in getsentry/sentry) into .agents/skills/react-testing in your project. Codex loads it when a task matches its description.
Can I use React 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 getsentry/sentry --skill react-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-testing, .gemini/skills/react-testing, .github/skills/react-testing and .opencode/skills/react-testing in your project.
What does React Testing need to run?
SKILL.md names no scripts, command-line tools or credentials: React Testing is instructions for the agent only.
Does React 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 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 Testing use?
React Testing has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does React Testing use?
About 2.2k tokens (SKILL.md is roughly 8.8k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to React Testing?
Skills that share tags, products or a category with React Testing: Unit Tests (Khan/wonder-blocks, 163 stars), React Testing (affaan-m/ECC, 275k stars), Hilla Test (AI-Unified-Process/marketplace, 141 stars) and React Testing (HoangNguyen0403/agent-skills-standard, 571 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains React Testing?
getsentry (a GitHub organization, an official publisher) maintains it in getsentry/sentry, which has 45,505 GitHub stars. The repository holds 29 skills in this directory. The repository was last updated on October 8, 2026.
Source: getsentry/sentry on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.