Testing & QA Skills

Skills for writing tests, running quality checks, and ensuring code reliability. From unit tests to end-to-end testing with Playwright and Vitest, these skills help Claude Code produce well-tested code.

159 skills

test-driven-development

obra/superpowers

30.6k

103.2k

Forces strict test-driven development by requiring tests before any implementation code. Won't let you write production code without a failing test first, and actually makes you delete existing code if you wrote it before the test. Walks through the red-green-refactor cycle with mandatory verification steps at each phase. Catches all the common rationalizations like "I'll test after" or "keep it as reference" and shuts them down. Good for breaking the habit of testing after implementation, since it's surprisingly hard to stick to true TDD without external enforcement of the discipline.

webapp-testing

anthropics/skills

30.1k

99.3k

A solid Playwright wrapper that handles the annoying parts of local webapp testing. The with_server.py script manages server lifecycle so you don't have to juggle terminals, and it supports multi-server setups like backend plus frontend. The reconnaissance-then-action pattern is smart: wait for networkidle, screenshot the rendered state, identify selectors from what actually loaded, then run your tests. Saves you from the classic mistake of trying to click buttons that haven't rendered yet. The helper scripts are designed as black boxes to keep your context clean, which is thoughtful for complex automation workflows.

ab-test-setup

coreyhaines31/marketingskills

20.4k

15.3k

This handles the full A/B testing workflow from hypothesis formation to statistical analysis. It walks you through proper test design, calculates sample sizes, helps you avoid the classic "peeking problem" where you stop tests early, and includes frameworks for building ongoing experimentation programs with ICE scoring. The skill catches when you're comparing two approaches and pushes you toward statistical rigor rather than gut decisions. It's particularly strong on the methodology side, with sample size tables and analysis checklists that prevent the common mistakes that make most A/B tests worthless.

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playwright-best-practices

currents-dev/playwright-best-practices-skill

13.9k

156

A comprehensive reference for Playwright testing that covers everything from basic E2E tests to advanced scenarios like WebSocket testing, mobile emulation, and browser extension testing. The skill is organized by activity rather than feature, so you can quickly find guidance whether you're writing new tests, debugging flaky ones, or implementing complex flows like OAuth popups. It includes specific patterns for Page Object Model, API mocking, accessibility testing with axe-core, and CI/CD optimization. Covers the full spectrum from component testing to security testing, with practical examples for handling authentication, file operations, and multi-tab scenarios.

vitest

antfu/skills

9.6k

4.2k

Vitest is a next-generation unit testing framework powered by Vite that provides a Jest-compatible API with native support for ESM, TypeScript, and JSX. It serves developers who want fast test execution with HMR-like updates, smart watch mode, and parallel test execution while leveraging their existing Vite configuration. The skill solves the problem of needing a modern testing setup that shares tooling with Vite apps and eliminates configuration overhead for contemporary JavaScript projects.

python-testing-patterns

wshobson/agents

9.5k

31.9k

Python-testing-patterns enables developers to implement comprehensive testing strategies using pytest, fixtures, mocking, and test-driven development practices for Python codebases. It provides guidance on unit tests, integration tests, test structure, coverage measurement, and test isolation to help engineers write robust test suites and maintain code quality. The skill addresses the problem of setting up effective testing infrastructure and following testing best practices across different test types and scenarios.

playwright-cli

microsoft/playwright-cli

9.5k

playwright-cli enables developers to automate browser interactions, navigate web pages, and perform end-to-end testing through a command-line interface powered by Playwright. It solves the problem of manually testing web applications by providing CLI commands for clicking, typing, filling forms, taking screenshots, and managing browser state—allowing QA engineers and developers to script complex user workflows and validate web page behavior programmatically.

playwright-generate-test

github/awesome-copilot

8.2k

26.4k

The playwright-generate-test skill generates Playwright tests from user-provided scenarios by systematically executing steps through the Playwright MCP tools, then saving and validating the generated TypeScript test files. It serves developers who need to create automated browser tests and solves the problem of manually writing test code by automating test generation and ensuring tests pass before completion.

playwright-explore-website

github/awesome-copilot

8.1k

26.4k

The playwright-explore-website skill enables users to systematically explore websites using Playwright's Model Context Protocol server to identify key functionalities and user flows for testing purposes. It guides testers through navigating to a target URL, interacting with 3-5 core features, documenting UI elements and their locators, and generating test cases based on the exploration findings. This skill solves the problem of manual website reconnaissance by automating the discovery of testable features and providing structured documentation of user interactions and expected outcomes.

e2e-testing-patterns

wshobson/agents

31.9k

The e2e-testing-patterns skill teaches developers how to design and implement reliable end-to-end test suites using Playwright and Cypress, covering test architecture, best practices, and patterns like Page Object Model. It addresses the problem of flaky tests and inconsistent testing standards by providing concrete guidance on what to test at the E2E level, how to structure tests for maintainability, and how to configure testing frameworks for CI/CD pipelines. This skill is for developers building production applications who need to validate critical user workflows while keeping test suites fast and maintainable.

javascript-typescript-jest

github/awesome-copilot

7.9k

26.4k

The javascript-typescript-jest skill provides best practices for writing unit tests in JavaScript and TypeScript projects using the Jest testing framework, covering test structure, mocking strategies, async testing, and React component testing. It's designed for developers building applications with Jest who need guidance on organizing tests, isolating dependencies through mocking, and using appropriate matchers and testing patterns. This skill solves the problem of writing ineffective or poorly organized tests by establishing conventions for test naming, file placement, mock management, and testing different code types.

playwright-automation-fill-in-form

github/awesome-copilot

7.8k

26.4k

The playwright-automation-fill-in-form skill automates the process of filling in web forms using Playwright's Model Context Protocol (MCP) capabilities, including text input, date/time selection, and file uploads. It is designed for developers and automation engineers who need to programmatically populate forms without manual intervention. The skill addresses the problem of repetitive form-filling tasks by providing browser automation that can navigate to a form, input specified data across multiple field types, and pause for review before submission.

create-specification

github/awesome-copilot

7.6k

26.4k

The create-specification skill generates structured specification files optimized for AI consumption, helping development teams document requirements, constraints, and interfaces in a machine-readable format. It serves software architects, developers, and AI systems that need clear, unambiguous technical specifications by providing a standardized template and best practices that ensure specifications are precise, self-contained, and easy for both humans and generative AI to parse. This skill solves the problem of creating AI-ready documentation that minimizes ambiguity and improves the quality of AI-generated code by establishing explicit requirements and technical contracts upfront.

scoutqa-test

github/awesome-copilot

7.5k

26.4k

ScoutQA-test enables AI-powered exploratory testing of web applications through the ScoutQA CLI, allowing users to automatically test functionality like login flows, accessibility, and end-to-end processes. It serves developers and QA teams who need to verify web features work correctly, either on explicit request or proactively after implementation. The skill solves the problem of manual testing inefficiency by delegating autonomous testing to ScoutQA, which can run multiple parallel tests to discover issues and validate features while developers continue other work.

pytest-coverage

github/awesome-copilot

7.4k

26.4k

The pytest-coverage skill runs pytest with coverage analysis to identify untested code lines and helps developers achieve 100% test coverage. It generates annotated source files marking uncovered lines with exclamation marks, allowing developers to systematically write tests for missing coverage. This skill is for Python developers who want to ensure their test suites comprehensively cover all code paths.

create-github-action-workflow-specification

github/awesome-copilot

7.4k

26.4k

The create-github-action-workflow-specification skill generates formal, implementation-agnostic specifications for existing GitHub Actions workflows designed for AI readability and maintenance. It serves DevOps teams and workflow maintainers who need to document workflow behavior, requirements, and constraints in a structured, token-efficient format using standardized templates with execution flow diagrams, dependency matrices, and requirement specifications. This skill solves the problem of translating complex YAML workflow configurations into clear, machine-optimized documentation that abstracts implementation details and facilitates workflow evolution and AI-assisted updates.

create-github-pull-request-from-specification

github/awesome-copilot

7.4k

26.4k

The create-github-pull-request-from-specification skill automates the generation of GitHub pull requests by analyzing a specification file and a pull request template, then creating a draft PR with populated title and body content before converting it to ready-for-review status. It's designed for developers who need to quickly convert feature specifications into properly formatted pull requests while checking for duplicate PRs and automatically assigning the creator. The skill solves the problem of manually creating PRs from specifications, ensuring consistency with template requirements and reducing manual formatting work.

legacy-circuit-mockups

github/awesome-copilot

7.4k

26.4k

The legacy-circuit-mockups skill generates visual breadboard circuit diagrams and schematics using HTML5 Canvas, enabling users to design and prototype retro computing projects featuring components like 6502 microprocessors, 555 timers, EEPROMs, and 7400-series logic gates. It serves electronics enthusiasts, hobbyists, and educators who need to visualize component placement and wiring for vintage computer builds and electronics projects. The skill solves the problem of translating circuit concepts into clear, interactive visual layouts that aid in understanding component connections and planning physical breadboard construction.

polyglot-test-agent

github/awesome-copilot

7.3k

26.4k

The polyglot-test-agent generates working unit tests across multiple programming languages (C#, TypeScript, JavaScript, Python, Go, Rust, Java, and others) by orchestrating a multi-agent pipeline through research, planning, and implementation phases. It serves developers who need to improve test coverage, create new test files, or ensure tests compile and pass while following project conventions. The skill solves the problem of generating comprehensive, language-appropriate tests efficiently without manual effort across diverse codebases.

breakdown-test

github/awesome-copilot

7.3k

26.4k

The breakdown-test skill generates comprehensive test strategies, task breakdowns, and quality assurance documentation for GitHub projects by applying ISTQB frameworks and ISO 25010 quality standards. It is designed for QA engineers and test architects who need to create structured testing plans based on feature PRDs, technical breakdowns, and implementation plans. The skill solves the problem of creating consistent, standards-based quality assurance documentation that covers test design techniques, risk assessment, and quality validation across multiple dimensions of software quality.

update-specification

github/awesome-copilot

7.3k

26.4k

The update-specification skill enables developers and AI systems to revise existing specification files based on new requirements or code changes, ensuring documentation remains current and machine-readable. It's designed for teams using generative AI to maintain clear, structured specifications that follow established formatting standards and best practices for AI consumption. The skill solves the problem of keeping technical specifications synchronized with evolving codebases by providing templates and guidelines that produce unambiguous, self-contained documentation optimized for both human and machine interpretation.

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FAQ

How do testing skills improve Claude Code output?

Testing skills teach Claude to write comprehensive test suites alongside your code, catch edge cases, and follow your project's testing conventions. They can generate unit tests, integration tests, and e2e tests.

Which testing frameworks are supported?

You'll find skills for Vitest, Jest, Playwright, Cypress, and framework-specific testing utilities. Many skills are framework-agnostic and work with any test runner.

Related categories

Code Review & Quality191 Debugging80 Frontend Development214 Backend & APIs279