Skill Claude CodeCodex
Mutation testing patterns for Python using mutmut. Use when analyzing Python code to find weak or missing tests, verifying pytest effectiveness, strengthening Python test suites, or validating TDD workflows in Python projects.
1,670 tagged Unit testing, measured the same way as everything else here.
Browse within: skills 121claude-code-plugin 98agents 89cursor 88agentic-ai 87ai-coding 76cli 69LLM 60dotnet 56ai-tools 47github-copilot 47coding-agents 43ai-skills 35copilot 33
Skill Claude CodeCodex
Mutation testing patterns for Python using mutmut. Use when analyzing Python code to find weak or missing tests, verifying pytest effectiveness, strengthening Python test suites, or validating TDD workflows in Python projects.
Skill Claude CodeCodex
Use when writing or modifying tests with hTest (htest.dev) — JS-first or HTML-first. Use when a project has htest.dev in devDependencies or uses npx htest to run tests. Use when writing declarative tests as nested object literals, or reftest tables in HTML.
Skill Claude Code
Write and run Jest tests for QuickContract services, including Prisma mocking and webhook-retry regression tests.
Skill Claude CodeCodex
a deterministic stub returned by the override engine in unit tests.
Skill Claude Code
Use this skill when writing, reviewing, or deciding where to place tests in the Next.js frontend package. Covers which project (unit / integration / storybook) to use for a given scenario, what NOT to duplicate across projects, and file placement conventions for this package.
Skill Claude CodeCodex
Write, modify, and review deterministic Swift unit tests using the Swift Testing framework. Use when working with @Test.
GrishaAngelovGH/gemini-cli-agent-skills
Skill Claude CodeCodex needs its repo
Expert guidance for testing React applications using React Testing Library and Vitest. Focuses on user-centric testing, accessibility, and best practices for unit and integration tests to ensure robust and maintainable code.
Skill Claude Code
Use when adding unit or integration tests. Provides test patterns, naming conventions, and fixtures for Python (pytest), TypeScript (vitest), Java (JUnit/Mockito), and Rust.
xun404/dify-agent-skill-plugin
Skill Claude CodeCodex
Generates unit tests, integration tests, and test strategies. Use for test creation, mocking, and coverage improvement.
Skill Claude Code
Write or update tape-six tests for a module or feature. Use when asked to write tests, add test coverage, or create test files.
fermonterom/claude-testing-kit
Skill Claude Code
Unit + E2E testing + quality gate para Next.js con Claude Code. Combina TDD workflow, Vitest patterns, Playwright E2E, validacion de build, env vars, y security check en una sola skill. Se activa al crear/modificar route.ts, page.tsx, o archivos de test. Para cualquier proyecto Next.js con App Router.
WordPress/core-contributor-skills
Skill Codex
Test quality auditor that reviews existing test suites—audits, deletes, rewrites, and fills genuine gaps. Use when asked to review tests, improve test quality, or audit a test suite. Does NOT blindly add tests.
Skill Claude CodeCodex
Write Foundry-based tests and scripts. Trigger phrases - foundry testing, write test, fuzz test, fork test, invariant test, deploy script, gas benchmark, coverage, or when working in tests/ or scripts/ directories.
Skill Claude CodeCodex
Comprehensive .NET skill for WinForms modernization, backend services refactoring, unit & integration test generation, and automated project upgrades.
Skill Claude Code
Write the missing tests for the gaps redbar found, following the canonical standard for that layer (Playwright's best practices for e2e, Vitest/Jest idiom for unit, Testcontainers for integration). Reads .redbar/gaps.json, writes one test file per gap, RUNS each test it wrote, and never leaves a failing test behind …
Anselmoo/mcp-ai-agent-guidelines
Skill Claude Code
Fix Codecov patch coverage gaps reported on a pull request. Use when Codecov bot flags missing or partial lines in a PR comment, when patch coverage is below the project threshold (≥87.55%), or when coverage regresses after new code is merged. Covers reading the Codecov report, identifying uncovered lines per file…
Skill Claude Code
Writes unit, widget, golden, and integration tests for Flutter projects, detecting whether BLoC, Riverpod, Provider, or GetX is in use from pubspec.yaml before writing any business-logic test. Use when the user asks to write Flutter tests, add test coverage to a widget/bloc/provider/repository, test a .dart file, or…
burugo/behavior-driven-development
Skill Claude CodeCodex
Use in a dedicated subagent for post-TDD blind unit-test review against requirements and public contracts to find missing cases, wrong assertions, and brittle tests.
Skill Claude CodeCodex
A development rule for a FastAPI and SQLite project that requires tests to run with `pytest -v`, then requires failures to be fixed and tests rerun until coverage reaches 100%. FastAPI is a Python web framework, and pytest is a Python testing tool.
Skill Claude Code
A repository-wide tool that creates and runs unit tests for Python code with pytest or C++ code with Google Test.
Skill Claude Code
Cortex XSOAR content pack development lifecycle - create packs, integrations, scripts, playbooks, run demisto-sdk lint/validate/pre-commit, build zip packs, manage versions and release notes, run unit tests, deploy to XSOAR instances, manage git branches/tags, handle marketplace vs local pack workflows. Use when the…
wan-aishengtang/testing-master-skill
Skill Codex
Handle software testing in a test-owner style, including early test strategy, complete testing framework design, requirements analysis, test planning, manual functional testing, defect report writing, API testing, API automation regression planning, Web UI automation planning, performance testing, system acceptance…
iamBrzDev/enterprise-agent-skills
Skill Claude CodeCodex
Implements enterprise-grade testing strategies for .NET applications using xUnit, Moq, FluentAssertions, and WebApplicationFactory. Use when writing unit tests, integration tests, or API tests in .NET or C#, configuring test projects, deciding what to mock vs what to test with real dependencies, setting up shared test…
u9401066/template-is-all-you-need
Skill Claude Code
A test-suite generation workflow for software projects. It includes static checks, unit tests, integration tests, end-to-end tests, coverage reports, type checking, linting, security scanning, and dead-code detection.
At most 3 mods per repository are shown here, and a mod shipped inside a plugin is left to that plugin's page — the rest are on their repository pages: