Test Coverage
scott-fryxell/brayness
Write Vitest specs for Vue 3 JavaScript (Vite Plus, happy-dom, @vue/test-utils) and analyze V8 coverage + Fallow health to prioritize test-first refactors.
Test-drive browser JavaScript behavior with DOM fixtures, test runners, smoke tests, onload timing, selector refactors, and integration tradeoffs with Selenium or end-to-end tests.
Install Browser Javascript TDD
$ npx skills add hashgraph-online/awesome-codex-plugins --skill browser-javascript-tdd -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install hashgraph-online/awesome-codex-plugins browser-javascript-tdd --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/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/LVTD-LLC/skills/skills/browser-javascript-tdd .claude/skills/browser-javascript-tdd && 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 "browser-javascript-tdd" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/LVTD-LLC/skills/skills/browser-javascript-tdd into .claude/skills/browser-javascript-tdd/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "browser-javascript-tdd", 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/hashgraph-online/awesome-codex-plugins/tree/main/plugins/LVTD-LLC/skills/skills/browser-javascript-tddType 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 hashgraph-online/awesome-codex-plugins --skill browser-javascript-tdd -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install hashgraph-online/awesome-codex-plugins browser-javascript-tdd --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .agents/skills && cp -r skills-src/plugins/LVTD-LLC/skills/skills/browser-javascript-tdd .agents/skills/browser-javascript-tdd && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "browser-javascript-tdd" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/LVTD-LLC/skills/skills/browser-javascript-tdd into .agents/skills/browser-javascript-tdd/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "browser-javascript-tdd", 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 hashgraph-online/awesome-codex-plugins --skill browser-javascript-tdd -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install hashgraph-online/awesome-codex-plugins browser-javascript-tdd --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/plugins/LVTD-LLC/skills/skills/browser-javascript-tdd .cursor/skills/browser-javascript-tdd && 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 "browser-javascript-tdd" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/LVTD-LLC/skills/skills/browser-javascript-tdd into .cursor/skills/browser-javascript-tdd/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "browser-javascript-tdd", 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/hashgraph-online/awesome-codex-plugins.git --path plugins/LVTD-LLC/skills/skills/browser-javascript-tdd--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 hashgraph-online/awesome-codex-plugins --skill browser-javascript-tdd -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install hashgraph-online/awesome-codex-plugins browser-javascript-tdd --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/plugins/LVTD-LLC/skills/skills/browser-javascript-tdd .gemini/skills/browser-javascript-tdd && 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 "browser-javascript-tdd" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/LVTD-LLC/skills/skills/browser-javascript-tdd into .gemini/skills/browser-javascript-tdd/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "browser-javascript-tdd", 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 hashgraph-online/awesome-codex-plugins browser-javascript-tddInstalls 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 hashgraph-online/awesome-codex-plugins --skill browser-javascript-tdd -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .github/skills && cp -r skills-src/plugins/LVTD-LLC/skills/skills/browser-javascript-tdd .github/skills/browser-javascript-tdd && 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 "browser-javascript-tdd" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/LVTD-LLC/skills/skills/browser-javascript-tdd into .github/skills/browser-javascript-tdd/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "browser-javascript-tdd", 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 hashgraph-online/awesome-codex-plugins --skill browser-javascript-tdd -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install hashgraph-online/awesome-codex-plugins browser-javascript-tdd --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/plugins/LVTD-LLC/skills/skills/browser-javascript-tdd .opencode/skills/browser-javascript-tdd && 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 "browser-javascript-tdd" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/LVTD-LLC/skills/skills/browser-javascript-tdd into .opencode/skills/browser-javascript-tdd/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "browser-javascript-tdd", 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
browser-javascript-tdd- GitHub stars
- 1.2k
- Token cost
- ~797 tokens
- SKILL.md length
- 351 words
- Files
- 4 (incl. references)
- Skills in repo
- 736
- Repo updated
- First seen
- Licence
- MIT
At a glance
Test-drive browser JavaScript behavior with DOM fixtures, test runners, smoke tests, onload timing, selector refactors, and integration tradeoffs with Selenium or end-to-end tests.
- Works in 4 steps: Start with the user-visible browser… → Choose the test boundary. → Build a stable DOM fixture. → …
- Adding client-side behavior
- SKILL.md covers Source Traceability, Workflow, Decision Rules and Guardrails, plus 1 more section
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Browser Javascript TDD is an agent skill from hashgraph-online/awesome-codex-plugins. Test-drive browser JavaScript behavior with DOM fixtures, test runners, smoke tests, onload timing, selector refactors, and integration tradeoffs with Selenium or end-to-end tests. Use when adding client-side behavior, debugging DOM tests, choosing between JS unit tests and browser functional tests, or making JavaScript testable without overusing Selenium.
Its SKILL.md is about 800 tokens, which your agent loads only when the skill is triggered. The skill folder holds 6 other files, including reference files (for example `agents/openai.yaml`, `evals/evals.json` and `references/browser-js-patterns.md`). Compatibility notes: Codex, Claude Code, and other Agent Skills-compatible clients.
It sits in Testing & QA, covering Test-driven development, Browser testing and Unit testing. It works with JavaScript and Selenium. The repository describes itself as: A curated list of awesome OpenAI Codex / ChatGPT plugins, skills, and resources. The 1 Codex Marketplace. See live plugins at: https://hol.org/plugins/best-codex-plugins. The licence is MIT.
When your agent uses it
- Adding client-side behavior
- Debugging DOM tests
- Choosing between JS unit tests and browser functional tests
- Making JavaScript testable without overusing Selenium
Example prompts
- “/browser-javascript-tdd”
Requirements
- Compatibility (from SKILL.md): Codex, Claude Code, and other Agent Skills-compatible clients.
Workflow steps
4 steps, taken from the first numbered list in SKILL.md.
- Start with the user-visible browser behavior.
- Choose the test boundary.
- Build a stable DOM fixture.
- Red/green/refactor the JavaScript.
What it can do on your machine
Read from SKILL.md and the folder at commit 16b4156. 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.
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.
Compatibility
Codex, Claude Code, and other Agent Skills-compatible clients.
From compatibility in the SKILL.md frontmatter.
Context cost
Browser Javascript TDD loads about 797 tokens when it runs, and up to ~1.3k if it reads all its reference files. Until then it costs about 95 tokens; SKILL.md has 351 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
The full file from hashgraph-online/awesome-codex-plugins at commit 16b4156, republished under its MIT licence (© hashgraph-online). 351 words, ~797 tokens.
Download SKILL.mdSave it as
.claude/skills/browser-javascript-tdd/SKILL.md (or your agent's skills folder). This skill also uses 3 other files; get the full folder from GitHub.- name
- browser-javascript-tdd
- description
- Test-drive browser JavaScript behavior with DOM fixtures, test runners, smoke tests, onload timing, selector refactors, and integration tradeoffs with Selenium or end-to-end tests. Use when adding client-side behavior, debugging DOM tests, choosing between JS unit tests and browser functional tests, or making JavaScript testable without overusing Selenium.
- compatibility
- Codex, Claude Code, and other Agent Skills-compatible clients.
- license
- MIT
- metadata.version
- 0.1.0
- metadata.displayName
- Browser JavaScript TDD
- metadata.category
- Testing
- metadata.tags
- javascript,tdd,testing,browser,frontend
Browser JavaScript TDD
Use this skill when browser-side behavior needs fast feedback before or alongside end-to-end tests. Keep JavaScript unit tests focused on DOM behavior and use broader browser tests only for integration confidence.
Source Traceability
Primary source: Harry Percival, Test-Driven Development with Python, 3rd ed. Guidance is transformed and paraphrased from chapters 17, 25, and Appendix B, especially browser-based Jasmine tests, DOM fixtures, onload timing, selector refactoring, and JavaScript CI integration.
Workflow
Start with the user-visible browser behavior.
- Decide what the JavaScript owns: DOM update, class toggle, client-side validation, enhancement, or integration hook.
- Keep server-owned state out of client unit tests.
Choose the test boundary.
- Use JavaScript unit tests for pure functions and DOM manipulation.
- Use one end-to-end test when Django/server, CSS, and browser wiring must be proven together.
- Do not use Selenium to exhaustively test JavaScript branches.
Build a stable DOM fixture.
- Include only the markup required by the behavior.
- Reset global state between tests.
- Make initialization explicit instead of relying on incidental page load order.
Red/green/refactor the JavaScript.
- First smoke-test the runner.
- Add a failing DOM behavior test.
- Implement minimal code.
- Refactor selectors and initialization while tests are green.
Read browser-js-patterns.md for DOM fixtures, initialization, and CI patterns.
Show full SKILL.md (146 more words)Show less
Decision Rules
- If the behavior is DOM-local, prefer JavaScript tests.
- If the risk is server-client integration, keep a small browser functional test.
- If the code depends on page load timing, expose an initialization function and test it directly.
- If selectors are duplicated across tests and code, introduce named selectors or data attributes deliberately.
- If the test needs CSS behavior, decide whether style is truly the contract or only incidental.
Guardrails
- Do not let global DOM or event listeners leak between tests.
- Do not test third-party framework behavior.
- Do not hide asynchronous timing with sleeps.
- Do not make JS unit tests pass while the real page never calls the code.
Verification
Before finishing, record:
- Test runner command and result.
- DOM fixture or setup reset strategy.
- Integration check when the real page wiring changed.
- CI step or artifact change when browser JS tests were added to the pipeline.
© hashgraph-online, 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 3 other files (references) in plugins/LVTD-LLC/skills/skills/browser-javascript-tdd of hashgraph-online/awesome-codex-plugins.
- SKILL.md
- agents/openai.yaml
- evals/evals.json
- references/browser-js-patterns.md
Open the folder on GitHubat commit 16b4156
Compare with similar skills
Browser Javascript TDD 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 |
|---|---|---|---|---|---|---|
| Browser Javascript TDD this skillhashgraph-online/awesome-codex-plugins | 1.2k | — | ~797 | Automated safety check: Pass | MIT | |
| Test Coveragescott-fryxell/brayness | 124 | — | ~1.6k | Automated safety check: Pass | MIT | |
| TDD WorkflowhellangleZ/burn-in-cceverywhere-ralph | 112 | 11 repos | ~2.4k | Automated safety check: Pass | None | |
| Pest Testingluadotsh/lua | 342 | 1 repos | ~1.2k | Automated safety check: Pass | MIT | |
| Test Guidelinesgetsentry/sentry-react-native | 1.8k | — | ~1.3k | Automated safety check: Pass | MIT | |
| Pest Testingliberusoftware/real-estate-laravel | 112 | 1 repos | ~1.8k | Automated safety check: Pass | MIT |
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Questions about Browser Javascript TDD
What does Browser Javascript TDD do?
Test-drive browser JavaScript behavior with DOM fixtures, test runners, smoke tests, onload timing, selector refactors, and integration tradeoffs with Selenium or end-to-end tests. Browser Javascript TDD is an agent skill from hashgraph-online/awesome-codex-plugins. Test-drive browser JavaScript behavior with DOM fixtures, test runners, smoke tests, onload timing, selector refactors, and integration tradeoffs with Selenium or end-to-end tests.
When should I use Browser Javascript TDD?
Browser Javascript TDD fits situations like: adding client-side behavior; debugging DOM tests; choosing between JS unit tests and browser functional tests; making JavaScript testable without overusing Selenium.
How do I install Browser Javascript TDD in Claude Code?
Run `npx skills add hashgraph-online/awesome-codex-plugins --skill browser-javascript-tdd -a claude-code`. Or copy the skill folder (plugins/LVTD-LLC/skills/skills/browser-javascript-tdd in hashgraph-online/awesome-codex-plugins) into .claude/skills/browser-javascript-tdd in your project. Claude Code loads it when a task matches its description.
How do I install Browser Javascript TDD in Codex?
Run `npx skills add hashgraph-online/awesome-codex-plugins --skill browser-javascript-tdd -a codex`. Or copy the skill folder (plugins/LVTD-LLC/skills/skills/browser-javascript-tdd in hashgraph-online/awesome-codex-plugins) into .agents/skills/browser-javascript-tdd in your project. Codex loads it when a task matches its description.
Can I use Browser Javascript TDD 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 hashgraph-online/awesome-codex-plugins --skill browser-javascript-tdd -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/browser-javascript-tdd, .gemini/skills/browser-javascript-tdd, .github/skills/browser-javascript-tdd and .opencode/skills/browser-javascript-tdd in your project.
What does Browser Javascript TDD need to run?
SKILL.md names no scripts, command-line tools or credentials: Browser Javascript TDD is instructions for the agent only. Compatibility (from SKILL.md): Codex, Claude Code, and other Agent Skills-compatible clients..
Does Browser Javascript TDD 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 Browser Javascript TDD 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 Browser Javascript TDD use?
Browser Javascript TDD is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Browser Javascript TDD use?
About 797 tokens (SKILL.md is roughly 3.2k 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 535 tokens, read only when the agent opens those files.
What are the alternatives to Browser Javascript TDD?
Skills that share tags, products or a category with Browser Javascript TDD: Test Coverage (scott-fryxell/brayness, 124 stars), TDD Workflow (hellangleZ/burn-in-cceverywhere-ralph, 112 stars), Pest Testing (luadotsh/lua, 342 stars) and Test Guidelines (getsentry/sentry-react-native, 1.8k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Browser Javascript TDD?
hashgraph-online (a GitHub organization) maintains it in hashgraph-online/awesome-codex-plugins, which has 1,232 GitHub stars. The repository holds 736 skills in this directory. The repository was last updated on October 6, 2026.
Source: hashgraph-online/awesome-codex-plugins on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.