Web Application Testing
anthropics/skills
Tests local web applications with Python Playwright scripts, checking frontend behavior, capturing screenshots and reading browser console logs.
Guides test selection, authoring, and quality review at the smallest reliable boundary.
Install Test Master
$ npx skills add pavel-molyanov/molyanov-ai-dev --skill test-master -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install pavel-molyanov/molyanov-ai-dev test-master --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/pavel-molyanov/molyanov-ai-dev.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/test-master .claude/skills/test-master && 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 "test-master" agent skill from https://github.com/pavel-molyanov/molyanov-ai-dev/tree/main/skills/test-master into .claude/skills/test-master/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "test-master", 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/pavel-molyanov/molyanov-ai-dev/tree/main/skills/test-masterType 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 pavel-molyanov/molyanov-ai-dev --skill test-master -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install pavel-molyanov/molyanov-ai-dev test-master --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/pavel-molyanov/molyanov-ai-dev.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/test-master .agents/skills/test-master && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "test-master" agent skill from https://github.com/pavel-molyanov/molyanov-ai-dev/tree/main/skills/test-master into .agents/skills/test-master/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "test-master", 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 pavel-molyanov/molyanov-ai-dev --skill test-master -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install pavel-molyanov/molyanov-ai-dev test-master --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/pavel-molyanov/molyanov-ai-dev.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/test-master .cursor/skills/test-master && 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 "test-master" agent skill from https://github.com/pavel-molyanov/molyanov-ai-dev/tree/main/skills/test-master into .cursor/skills/test-master/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "test-master", 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/pavel-molyanov/molyanov-ai-dev.git --path skills/test-master--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 pavel-molyanov/molyanov-ai-dev --skill test-master -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install pavel-molyanov/molyanov-ai-dev test-master --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/pavel-molyanov/molyanov-ai-dev.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/test-master .gemini/skills/test-master && 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 "test-master" agent skill from https://github.com/pavel-molyanov/molyanov-ai-dev/tree/main/skills/test-master into .gemini/skills/test-master/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "test-master", 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 pavel-molyanov/molyanov-ai-dev test-masterInstalls 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 pavel-molyanov/molyanov-ai-dev --skill test-master -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/pavel-molyanov/molyanov-ai-dev.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/test-master .github/skills/test-master && 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 "test-master" agent skill from https://github.com/pavel-molyanov/molyanov-ai-dev/tree/main/skills/test-master into .github/skills/test-master/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "test-master", 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 pavel-molyanov/molyanov-ai-dev --skill test-master -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install pavel-molyanov/molyanov-ai-dev test-master --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/pavel-molyanov/molyanov-ai-dev.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/test-master .opencode/skills/test-master && 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 "test-master" agent skill from https://github.com/pavel-molyanov/molyanov-ai-dev/tree/main/skills/test-master into .opencode/skills/test-master/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "test-master", 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
test-master- GitHub stars
- 297
- Token cost
- ~842 tokens
- SKILL.md length
- 387 words
- Files
- 6 (incl. references)
- Skills in repo
- 13
- Repo updated
- First seen
- Licence
- MIT
At a glance
Guides test selection, authoring, and quality review at the smallest reliable boundary.
- Как тестировать
- SKILL.md covers Decide What to Protect, Choose the Smallest Reliable…, Authoring Rules and Test Review
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Проанализируй тесты
What it does
Test Master is an agent skill from pavel-molyanov/molyanov-ai-dev. Guides test selection, authoring, and quality review at the smallest reliable boundary. Use when: "напиши тесты", "как тестировать", "проанализируй тесты", "проверь качество тестов", "ревью тестов", "тестовая стратегия"
Its SKILL.md is about 840 tokens, which your agent loads only when the skill is triggered. The skill folder holds 6 other files, including reference files (for example `references/e2e-tests.md`, `references/integration-tests.md` and `references/smoke-tests.md`).
It sits in Testing & QA. The repository describes itself as: Intent-driven AI-First development methodology for Claude Code and Codex — Project Knowledge, user-spec planning, focused execution, and evidence-gated reviews. The licence is MIT.
When your agent uses it
- Как тестировать
- Проанализируй тесты
- Проверь качество тестов
- Тестовая стратегия
Example prompts
- “Use the test-master skill to guide test selection, authoring, and quality review at the smallest reliable boundary”
- “/test-master”
What it can do on your machine
Read from SKILL.md and the folder at commit b5db526. 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.
Context cost
Test Master loads about 842 tokens when it runs, and up to ~4.3k if it reads all its reference files. Until then it costs about 58 tokens; SKILL.md has 387 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 pavel-molyanov/molyanov-ai-dev at commit b5db526, republished under its MIT licence (© pavel-molyanov). 387 words, ~842 tokens.
Download SKILL.mdSave it as
.claude/skills/test-master/SKILL.md (or your agent's skills folder). This skill also uses 5 other files; get the full folder from GitHub.- name
- test-master
- description
- Guides test selection, authoring, and quality review at the smallest reliable boundary. Use when: "напиши тесты", "как тестировать", "проанализируй тесты", "проверь качество тестов", "ревью тестов", "тестовая стратегия"
Test Master
Decide What to Protect
Tests protect observable behavior or another explicit contract that must survive change. Trace each selected scenario to the user request, user-spec, or changed project contract.
Freely editable copy, presentation-only markup or styles, constants that merely repeat their source value, and framework behavior normally have no test subject. They become testable when an explicit user, accessibility, legal, safety, protocol, or project requirement makes their presence or semantics invariant. Test that contract at an observable boundary rather than freezing implementation shape or exact wording.
Choose the Smallest Reliable Boundary
Protect each distinct risk once at the smallest boundary that can reproduce it:
| Boundary | Use when the risk depends on |
|---|---|
| Unit | One unit's calculation, decision, validation, transformation, or error behavior |
| Integration | An API, database, filesystem, queue, service contract, or collaborating components |
| E2E | A critical user journey or behavior that needs the real application stack |
| Smoke | Successful startup, initialization, deployment, or minimal system integration |
Do not repeat the same risk at several levels for pyramid completeness. A characterization test may pass before a refactor when its purpose is to prove existing behavior remains unchanged.
When authoring a selected type, apply its conditional guide:
- unit-tests.md — unit structure, dependency boundaries, and mocking;
- integration-tests.md — real component boundaries, fixtures, external services, and cleanup;
- e2e-tests.md — journeys, environment, selectors, and execution;
- smoke-tests.md — minimal startup and infrastructure coverage.
Show full SKILL.md (164 more words)Show less
Authoring Rules
- Test observable results, state, errors, or required outgoing interactions rather than private implementation shape.
- Cover the changed happy path, meaningful branches, failure paths, and specified edge cases without duplicating an already protected risk.
- Keep tests independent and deterministic with known state. Replace dependencies only outside the boundary the test is meant to exercise.
- Several mocks are a signal to inspect the boundary, not a defect by count. A test fails when mocks replace the meaningful decision or merely replay configured values.
- Use clear scenario names and minimal fixtures. Run the selected tests and separate unrelated baseline failures from regressions.
Test Review
When meaningful test code changes, run a fresh test-reviewer in full mode after implementation.
For a user-requested review of existing tests, apply
test-quality-review.md — demonstrated coverage gaps,
boundary problems, and ineffective tests.
Reviewer severity follows the concrete regression that can pass undetected, not the category or appearance of the test problem. Naming preferences and optional improvements without concrete impact are not findings.
© pavel-molyanov, 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 5 other files (references) in skills/test-master of pavel-molyanov/molyanov-ai-dev.
- SKILL.md
- references/e2e-tests.md
- references/integration-tests.md
- references/smoke-tests.md
- references/test-quality-review.md
- references/unit-tests.md
Open the folder on GitHubat commit b5db526
Compare with similar skills
Test Master 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 |
|---|---|---|---|---|---|---|
| Test Master this skillpavel-molyanov/molyanov-ai-dev | 297 | — | ~842 | Automated safety check: Pass | MIT | |
| Web Application Testinganthropics/skills | 180k | 51 repos | ~966 | Automated safety check: Pass | Apache-2.0 | |
| Diagnosing Bugsfossasia/eventyay-interpretation | 1.6k | 32 repos | ~2.1k | Automated safety check: Pass | Apache-2.0 | |
| TDDpietheinstrengholt/rssmonster | 564 | 30 repos | ~906 | Automated safety check: Pass | MIT | |
| TDD WorkflowhellangleZ/burn-in-cceverywhere-ralph | 112 | 11 repos | ~2.4k | Automated safety check: Pass | None | |
| TDDsanity-io/sanity | 6.4k | 20 repos | ~1k | Automated safety check: Pass | MIT |
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TDD Workflow
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A skill your agent uses when writing new features, fixing bugs, or refactoring code.
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A skill your agent uses when working with Conductor's context-driven development methodology, managing project context artifacts, or understanding the relationship between product.md, tech-stack.md…
More from pavel-molyanov/molyanov-ai-dev
All 13 skills in this repoDocumentation Writing
pavel-molyanov/molyanov-ai-dev
Creates and maintains project documentation in .claude/skills/project-knowledge/: interview, initial Project Knowledge, audit, edit, consistency, and feature finalization.
User Spec Planning
pavel-molyanov/molyanov-ai-dev
Creates user-spec.md through adaptive interview, codebase research, and three-lane validation.
Infrastructure Setup
pavel-molyanov/molyanov-ai-dev
Provides project infrastructure conventions and review criteria for local setup, Docker, Git hooks, CI/CD, service delivery, release artifacts, monitoring, backups, and operations.
Layout Writing
pavel-molyanov/molyanov-ai-dev
Reproduces and adjusts web layouts from Figma, Claude Design exports, screenshots, or an existing project style with high visual fidelity and proportional verification.
Skill Master
pavel-molyanov/molyanov-ai-dev
Guides skill creation and updates with specialized knowledge and workflows.
Project Initialization
pavel-molyanov/molyanov-ai-dev
Initializes a project from the standard dual-runtime template, preserves existing files, configures Git hooks, and creates or connects a private GitHub repository with main and dev branches.
Related
Categories
Questions about Test Master
What does Test Master do?
Guides test selection, authoring, and quality review at the smallest reliable boundary. Test Master is an agent skill from pavel-molyanov/molyanov-ai-dev. Guides test selection, authoring, and quality review at the smallest reliable boundary.
When should I use Test Master?
Test Master fits situations like: Как тестировать; Проанализируй тесты; Проверь качество тестов; Тестовая стратегия.
How do I install Test Master in Claude Code?
Run `npx skills add pavel-molyanov/molyanov-ai-dev --skill test-master -a claude-code`. Or copy the skill folder (skills/test-master in pavel-molyanov/molyanov-ai-dev) into .claude/skills/test-master in your project. Claude Code loads it when a task matches its description.
How do I install Test Master in Codex?
Run `npx skills add pavel-molyanov/molyanov-ai-dev --skill test-master -a codex`. Or copy the skill folder (skills/test-master in pavel-molyanov/molyanov-ai-dev) into .agents/skills/test-master in your project. Codex loads it when a task matches its description.
Can I use Test Master 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 pavel-molyanov/molyanov-ai-dev --skill test-master -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/test-master, .gemini/skills/test-master, .github/skills/test-master and .opencode/skills/test-master in your project.
What does Test Master need to run?
SKILL.md names no scripts, command-line tools or credentials: Test Master is instructions for the agent only.
Does Test Master 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 Test Master 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 Test Master use?
Test Master 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 Test Master use?
About 842 tokens (SKILL.md is roughly 3.4k 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 3.4k tokens, read only when the agent opens those files.
What are the alternatives to Test Master?
Skills that share tags, products or a category with Test Master: Web Application Testing (anthropics/skills, 180k stars), Diagnosing Bugs (fossasia/eventyay-interpretation, 1.6k stars), TDD (pietheinstrengholt/rssmonster, 564 stars) and TDD Workflow (hellangleZ/burn-in-cceverywhere-ralph, 112 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Test Master?
pavel-molyanov (a GitHub user) maintains it in pavel-molyanov/molyanov-ai-dev, which has 297 GitHub stars. The repository holds 13 skills in this directory. The repository was last updated on August 23, 2026.
Source: pavel-molyanov/molyanov-ai-dev on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.