Unit testing skills

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

eferro/augmentedcode-skills

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.

not rated 24 8mo ago A 43 tokens

htest

26

htest-dev/htest

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.

not rated 23 changed 12d ago A 66 tokens original MIT

testing

27

ExcaliburOSS/excalibur-core

Skill Claude Code

Write and run Jest tests for QuickContract services, including Prisma mocking and webhook-retry regression tests.

not rated 22 1mo ago A 22 tokens original Apache-2.0

testing

29

manakuro/asana-clone-app

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.

not rated 20 10d ago A 56 tokens original MIT

swift-unit-testing

30

nonameplum/agent-skills

Skill Claude CodeCodex

Write, modify, and review deterministic Swift unit tests using the Swift Testing framework. Use when working with @Test.

not rated 17 2mo ago A 27 tokens

react-test-engineer

31

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.

not rated 16 7mo ago A 44 tokens original MIT

add-test

32

open-metadata/ai-sdk

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.

not rated 15 1mo ago A 40 tokens

testing-helper

33

xun404/dify-agent-skill-plugin

Skill Claude CodeCodex

Generates unit tests, integration tests, and test strategies. Use for test creation, mocking, and coverage improvement.

not rated 14 +1 2mo ago A 26 tokens

write-tests

34

uhop/console-toolkit

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.

not rated 10 changed 21d ago A 31 tokens original BSD-3-Clause

testing-kit

35

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.

not rated 10 6mo ago A 78 tokens original MIT

unit-tests

36

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.

not rated 10 1mo ago A 48 tokens GPL-2.0

cli-forge

37

sablier-labs/agent-skills

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.

not rated 9 24d ago A 50 tokens original MIT

lschaffer/tealkit

Skill Claude CodeCodex

Comprehensive .NET skill for WinForms modernization, backend services refactoring, unit & integration test generation, and automated project upgrades.

not rated 8 +1 changed yesterday A 33 tokens original MIT

redbar.fix

39

emersonjds/redbar

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 …

not rated 7 1mo ago A 113 tokens original MIT

fix-codecov-gaps

40

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…

not rated 6 2d ago A 87 tokens original MIT

flutter-testing

41

jyotiraditya-chauhan/test-kit

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…

not rated 6 1mo ago A 96 tokens original MIT

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.

not rated 5 5mo ago A 36 tokens

claude-code-test

43

LoNebula/lluminai

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.

not rated 5 1mo ago A 0 tokens original MIT

unit-test-gen

44

FanaticsKang/code-wiki

Skill Claude Code

A repository-wide tool that creates and runs unit tests for Python code with pytest or C++ code with Google Test.

not rated 5 5mo ago A 128 tokens

xsoar-pack-dev

45

mdrobniu/xsoar-pack-dev-skill

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…

not rated 5 7mo ago D 95 tokens original Apache-2.0

testing-master

46

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…

not rated 5 4mo ago A 138 tokens original MIT

dotnet-testing

47

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…

not rated 5 1mo ago A 127 tokens original MIT

test-generator

48

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.

not rated 3 7mo ago A 98 tokens original Apache-2.0

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