Unit & integration tests skills for AI agents

Unit & integration tests

515 rows from 191 repositories

Tests that run without a browser.

What Unit & integration tests skills agree on

154 skill files read, by 149 of the 202 authors on this shelf whose files we hold, 2026-09-06

Counted by distinct author, so one author publishing three of these counts once. Where a claim sits in fewer files than authors, that is said: a claim held by forty authors across three files is one file people copied, not forty people who agreed. Near-identical wordings are grouped and the other wordings are shown, so the grouping is yours to check.

What they tell the agent to do

Structure tests as arrange, act, assert17 of 149also worded as structure each test as Arrange-Act-Assert; structure every test as arrange-act-assert
Test behavior, not implementation16 of 149also worded as Test behavior, not implementation details; List behaviors to test, not implementation steps
Mock all external dependencies14 of 149also worded as Mock only external dependencies; Mock external dependencies
Keep tests independent9 of 149also worded as Keep each test independent and deterministic; Keep tests independent of execution order
Implement minimal code to pass7 of 149also worded as implement only minimal code to pass; Write minimal code to pass the current test
Write a failing test first7 of 149also worded as write failing tests before implementation; Write a failing test before implementing
Fix or delete flaky tests immediately7 of 149also worded as Fix flaky tests immediately; Fix tests immediately
Verify one behaviour per test function7 of 149also worded as test one behavior per test method; Test one behavior per test
Name tests MethodName_StateUnderTest_ExpectedBehavior6 of 149also worded as name tests to state behaviour and expected result; name tests as Method_Scenario_ExpectedResult
Separate arrange, act, and assert with blank lines6 of 149also worded as Separate Arrange, Act, and Assert in every test; separate every test into arrange, act, assert
Target at least 80 percent core logic coverage6 of 149also worded as Target 90 percent coverage on business logic; Target line coverage of at least 80 percent
Create factory fixtures for test data6 of 149also worded as Use factories or fixtures for test data; Build test data with factory functions
Detect test frameworks from config files6 of 149also worded as Detect the framework from its config file; Detect the framework from fingerprint, analyzer, then config files
Always await async assertions5 of 149 in 3 filesalso worded as Await every promise assertion in async tests; Await async assertions to prevent false positives
Use FakeTimeProvider for time-dependent logic5 of 149also worded as Use fake timers for time-dependent code; use FakeTimeProvider for time-dependent tests

What they tell it not to do

Do not test private methods12 of 149also worded as Do not test private implementation details; Never test private methods
Never share mutable state between tests12 of 149also worded as Do not share mutable state between tests; sharing state between tests
Never write tests without assertions8 of 149also worded as Don't write tests without assertions; Do not fix a test you did not just write
Never mock the class under test6 of 149also worded as Don't mock the thing being tested; Never mock the thing under test
Do not use in-memory databases for integration tests6 of 149also worded as Don't use in-memory databases for integration tests; Do not mock your own code in integration tests
Do not mock everything5 of 149also worded as mocking everything; Never mock every dependency
Do not mock internal collaborators5 of 149also worded as Do not mock internal functions; Mock internal implementation details
Do not test trivial getters and setters5 of 149also worded as Do not test trivial getters and setters; Don't test trivial getters and setters
Do not test third-party libraries5 of 149also worded as Do not test third-party libraries; Don't test third-party library internals
Never write expect(x === y).toBe(true)4 of 149 in 2 filesalso worded as Never write placeholder assertions like expect(true).toBe(true)

What they expect to be installed

vitest44 of 149
pytest39 of 149 in 38 files
Jest31 of 149
Testcontainers14 of 149
Playwright14 of 149
bash8 of 149
go test8 of 149
React Testing Library7 of 149
MSW7 of 149
git7 of 149

What they ask it to produce

Coverage report14 of 149also worded as Coverage delta report; HTML coverage report
Unit tests9 of 149also worded as Unit test specification; Unit test classes
Integration tests8 of 149also worded as Integration test specification; Integration test fixtures
vitest.config.ts7 of 149also worded as Test config block in vite.config.ts; vitest.config
conftest.py with shared fixtures7 of 149also worded as conftest.py with async fixtures; conftest.py with a load-or-generate fixture
Vitest test files6 of 149also worded as test files importing vitest; Jest/Vitest test files
Jest unit and integration tests3 of 149 in 1 file
Component snapshots3 of 149 in 1 file

When Unit & integration tests authors say to reach for one

The situations these authors wrote into their own files, counted out of the same 149 authors, with the skills that name each one

User asks to write tests16 of 149
- Abap unit testing
- Tdd loop
- Go test
- and 1 more on this shelf
Writing tests10 of 149
- Vitest
- Comprehensive testing
- and 2 more on this shelf
User asks to improve test coverage10 of 149
- Go test
User asks for unit tests or mocks7 of 149
- Abap unit testing
- Testing vitest
- and 1 more on this shelf
Migrating from Jest to Vitest4 of 149
- Vitest

How Unit & integration tests skills are built

454 skill directories by 181 authors, read from their repositories’ own file trees 2026-08-05

The middle bundle among those shipping files is 2 files, 20.0 KB beside SKILL.md

Counted by distinct author, same as above, so one author publishing forty template copies counts once. SKILL.md itself is not counted as a file, so a single-file skill is one where that file is the whole skill.

The shape

SKILL.md is the whole skill72 of 181 authors, 234 of 454 skills
files ship beside it109 of 181 authors, 220 of 454 skills
executable scripts ship inside29 of 181 authors, 40 of 454 skills

The folders they converge on

references/71 of 181 authors, 126 of 454 skills
scripts/19 of 181 authors, 26 of 454 skills
evals/13 of 181 authors, 15 of 454 skills
assets/12 of 181 authors, 15 of 454 skills
agents/11 of 181 authors, 14 of 454 skills
templates/10 of 181 authors, 14 of 454 skills

Does it work
TsakunovR/does-it-work Skill
10★
Claude Code / Codex skill: проверяет, что ваш продукт реально работает — находит баги и строит защиту от регрессий автотестами
Cypress debugger
voidmatcha/e2e-skills/skills/cypress-debugger Skill
9★ repo
AI agent testing toolkit for Playwright and Cypress: generate E2E tests from scratch, review existing specs against 24 anti-patterns (P0/P1/P2 silent-always-pass smells), and debug flaky failures from playwright-report/ or cypress/reports/. Agent Skills for Claude Code and Codex.
Coverage guard
sametcelikbicak/coverage-guard Skill
3★
An AI agent skill that enforces 100% test coverage for any JavaScript/TypeScript project. Works with Vitest, Jest, react-scripts, and other test runners. Compatible with opencode, Claude Code, Cursor, Windsurf, and GitHub Copilot.
Skills
2389-research/scenario-testing/skills Skill
2★ repo
End-to-end testing with real dependencies - no mocks allowed; scenarios with real data are the only source of truth
Api test generator
teckedd-code2save/ai-build-tools/cli/skills/api-test-generator Skill
2★ repo
From product spec to live URL — scaffold a backend with Forge, ship to your VPS with ship-to-vps
Fix failing tests
coreline-ai/codex-skill-factory/Test/skill-case-100-prompts/generated-skills/fix-failing-tests Skill
1★ repo
Codex 프롬프트 패턴을 분석해 Skill 후보 생성·설치까지 지원하는 로컬 CLI | Local CLI that analyzes Codex prompt patterns and generates installable Skills
Pytest microservices skill
cdragos/agentarium/skills/pytest-microservices-skill Skill
no license0★ repo
Agent toolkit: reusable skills, commands, and automations for LLM workflows
Anti test theater
nanami7777777/anti-test-theater Skill
0★
Stop AI agents from writing useless tests. Decision trees for mocking, test layering, and requirement-driven testing that catches real bugs.
Adding dbt unit test
danielvogler/ai-skills-library/.agents/skills/adding-dbt-unit-test Skill
0★ repo
Centralized manifest for AI agent skills. Synced via ai-agent-skills.
Dotnet unit test generator
brunovgprado/engineering-agent-skills/dotnet/dotnet-unit-test-generator Skill
0★ repo
A collection of reusable AI Agent Skills for software engineering, architecture, code review, performance analysis, DevOps, cloud, and developer productivity.
Test gen
ZaneL1u/test-generate-skills/skills/test-gen Skill
0★ repo
Agent skills to decide, generate, and set up frontend tests (unit vs e2e). Framework-agnostic, installable via npx skills add.
Java unit test skill
ajaygodbole7/java-unit-test-skill Skill
no license0★
A tool-agnostic Agent Skill for writing, reviewing, and refactoring Java unit tests with JUnit 5, AssertJ, and Mockito.
Ue angelscript tests
osseous/skills/skills/ue-angelscript-tests Skill
2★ repo
Agent skills for Unreal Engine + AngelScript workflows. Drop-in skills.sh-compatible monorepo.
Jest setup
alexngai/skill-tree/docs/demo/skills/jest-setup Skill
0★ repo
Version control and evolution for AI agent skills — versioned storage, dynamic serving/loadouts, multi-agent git sync, and cross-repo federation.
Flaky ci forensics
oceanfsdfsvfdsvs/flaky-ci-forensics Skill
0★
Turn flaky CI failures into triage reports｜把不稳定 CI 失败变成排查报告
Jest skill
sickn33/agentic-awesome-skills/plugins/agentic-awesome-skills-claude/skills/jest-skill Skill
44,658★ repo
AAS Core is the local, agent-first control plane for complete catalog discovery, agent-owned selection, stack validation, and planning, backed by 1,987+ agentic skills. Includes CLI, local MCP, catalog, plugins, and Workbench.
Junit 5 skill
sickn33/agentic-awesome-skills/plugins/agentic-awesome-skills-claude/skills/junit-5-skill Skill
44,658★ repo
AAS Core is the local, agent-first control plane for complete catalog discovery, agent-owned selection, stack validation, and planning, backed by 1,987+ agentic skills. Includes CLI, local MCP, catalog, plugins, and Workbench.
Pytest skill
sickn33/agentic-awesome-skills/plugins/agentic-awesome-skills-claude/skills/pytest-skill Skill
44,658★ repo
AAS Core is the local, agent-first control plane for complete catalog discovery, agent-owned selection, stack validation, and planning, backed by 1,987+ agentic skills. Includes CLI, local MCP, catalog, plugins, and Workbench.
Vitest skill
sickn33/agentic-awesome-skills/plugins/agentic-awesome-skills-claude/skills/vitest-skill Skill
44,658★ repo
AAS Core is the local, agent-first control plane for complete catalog discovery, agent-owned selection, stack validation, and planning, backed by 1,987+ agentic skills. Includes CLI, local MCP, catalog, plugins, and Workbench.
Jest skill
sickn33/agentic-awesome-skills/plugins/agentic-awesome-skills/skills/jest-skill Skill
44,658★ repo
AAS Core is the local, agent-first control plane for complete catalog discovery, agent-owned selection, stack validation, and planning, backed by 1,987+ agentic skills. Includes CLI, local MCP, catalog, plugins, and Workbench.
Junit 5 skill
sickn33/agentic-awesome-skills/plugins/agentic-awesome-skills/skills/junit-5-skill Skill
44,658★ repo
AAS Core is the local, agent-first control plane for complete catalog discovery, agent-owned selection, stack validation, and planning, backed by 1,987+ agentic skills. Includes CLI, local MCP, catalog, plugins, and Workbench.
Pytest skill
sickn33/agentic-awesome-skills/plugins/agentic-awesome-skills/skills/pytest-skill Skill
44,658★ repo
AAS Core is the local, agent-first control plane for complete catalog discovery, agent-owned selection, stack validation, and planning, backed by 1,987+ agentic skills. Includes CLI, local MCP, catalog, plugins, and Workbench.
Vitest skill
sickn33/agentic-awesome-skills/plugins/agentic-awesome-skills/skills/vitest-skill Skill
44,658★ repo
AAS Core is the local, agent-first control plane for complete catalog discovery, agent-owned selection, stack validation, and planning, backed by 1,987+ agentic skills. Includes CLI, local MCP, catalog, plugins, and Workbench.
Jest skill
sickn33/agentic-awesome-skills/skills/jest-skill Skill
44,658★ repo
AAS Core is the local, agent-first control plane for complete catalog discovery, agent-owned selection, stack validation, and planning, backed by 1,987+ agentic skills. Includes CLI, local MCP, catalog, plugins, and Workbench.
Junit 5 skill
sickn33/agentic-awesome-skills/skills/junit-5-skill Skill
44,658★ repo
AAS Core is the local, agent-first control plane for complete catalog discovery, agent-owned selection, stack validation, and planning, backed by 1,987+ agentic skills. Includes CLI, local MCP, catalog, plugins, and Workbench.
Pytest skill
sickn33/agentic-awesome-skills/skills/pytest-skill Skill
44,658★ repo
AAS Core is the local, agent-first control plane for complete catalog discovery, agent-owned selection, stack validation, and planning, backed by 1,987+ agentic skills. Includes CLI, local MCP, catalog, plugins, and Workbench.
Vitest skill
sickn33/agentic-awesome-skills/skills/vitest-skill Skill
44,658★ repo
AAS Core is the local, agent-first control plane for complete catalog discovery, agent-owned selection, stack validation, and planning, backed by 1,987+ agentic skills. Includes CLI, local MCP, catalog, plugins, and Workbench.
Javascript testing patterns
wshobson/agents/plugins/javascript-typescript/skills/javascript-testing-patterns Skill
38,701★ repo
Multi-harness agentic plugin marketplace for Claude Code, Codex CLI, Cursor, OpenCode, GitHub Copilot, and Gemini CLI
Java junit
github/awesome-copilot/skills/java-junit Skill
37,897★ repo
Community-contributed instructions, agents, skills, and configurations to help you make the most of GitHub Copilot.
Javascript typescript jest
github/awesome-copilot/skills/javascript-typescript-jest Skill
37,897★ repo
Community-contributed instructions, agents, skills, and configurations to help you make the most of GitHub Copilot.
Pytest coverage
github/awesome-copilot/skills/pytest-coverage Skill
37,897★ repo
Community-contributed instructions, agents, skills, and configurations to help you make the most of GitHub Copilot.
Unit test vue pinia
github/awesome-copilot/skills/unit-test-vue-pinia Skill
37,897★ repo
Community-contributed instructions, agents, skills, and configurations to help you make the most of GitHub Copilot.
Tdd guide
alirezarezvani/claude-skills/engineering-team/skills/tdd-guide Skill
24,478★ repo
345 Claude Code skills & agent skills & plugins (30+ Agents, 70+ custom commands, 330+ skills, customizable references, scripts)for Claude Code, Codex, Gemini CLI, Cursor, and 8 more coding agents — engineering, marketing, product, compliance, C-level advisory, research, business operations, commercial & finance, and your daily productivity skills.
Vitest
antfu/skills/skills/vitest Skill
5,740★ repo
Anthony Fu's curated collection of agent skills.
Code testing agent
dotnet/skills/plugins/dotnet-test/skills/code-testing-agent Skill
5,132★ repo
Repository for skills to assist AI coding agents with .NET and C#
Test analysis extensions
dotnet/skills/plugins/dotnet-test/skills/test-analysis-extensions Skill
5,132★ repo
Repository for skills to assist AI coding agents with .NET and C#
Test anti patterns
dotnet/skills/plugins/dotnet-test/skills/test-anti-patterns Skill
5,132★ repo
Repository for skills to assist AI coding agents with .NET and C#
Test smell detection
dotnet/skills/plugins/dotnet-test/skills/test-smell-detection Skill
5,132★ repo
Repository for skills to assist AI coding agents with .NET and C#
Test tagging
dotnet/skills/plugins/dotnet-test/skills/test-tagging Skill
5,132★ repo
Repository for skills to assist AI coding agents with .NET and C#
Langchain local dev loop
jeremylongshore/claude-code-plugins-plus-skills/plugins/saas-packs/langchain-py-pack/skills/langchain-local-dev-loop Skill
2,628★ repo
425 plugins, 2,810 skills, 200 agents for Claude Code. Open-source marketplace at tonsofskills.com with the ccpi CLI package manager.
Langchain local dev loop
jeremylongshore/claude-code-plugins-plus-skills/skills/.curated/langchain-local-dev-loop Skill
2,628★ repo
425 plugins, 2,810 skills, 200 agents for Claude Code. Open-source marketplace at tonsofskills.com with the ccpi CLI package manager.
Go test generator
jeremylongshore/claude-code-plugins-plus-skills/skills/09-test-automation/go-test-generator Skill
2,628★ repo
425 plugins, 2,810 skills, 200 agents for Claude Code. Open-source marketplace at tonsofskills.com with the ccpi CLI package manager.
Integration test setup
jeremylongshore/claude-code-plugins-plus-skills/skills/09-test-automation/integration-test-setup Skill
2,628★ repo
425 plugins, 2,810 skills, 200 agents for Claude Code. Open-source marketplace at tonsofskills.com with the ccpi CLI package manager.
Jest test generator
jeremylongshore/claude-code-plugins-plus-skills/skills/09-test-automation/jest-test-generator Skill
2,628★ repo
425 plugins, 2,810 skills, 200 agents for Claude Code. Open-source marketplace at tonsofskills.com with the ccpi CLI package manager.
Pytest test generator
jeremylongshore/claude-code-plugins-plus-skills/skills/09-test-automation/pytest-test-generator Skill
2,628★ repo
425 plugins, 2,810 skills, 200 agents for Claude Code. Open-source marketplace at tonsofskills.com with the ccpi CLI package manager.
Snapshot test helper
jeremylongshore/claude-code-plugins-plus-skills/skills/09-test-automation/snapshot-test-helper Skill
2,628★ repo
425 plugins, 2,810 skills, 200 agents for Claude Code. Open-source marketplace at tonsofskills.com with the ccpi CLI package manager.
Vitest test creator
jeremylongshore/claude-code-plugins-plus-skills/skills/09-test-automation/vitest-test-creator Skill
2,628★ repo
425 plugins, 2,810 skills, 200 agents for Claude Code. Open-source marketplace at tonsofskills.com with the ccpi CLI package manager.
Integration test generator
jeremylongshore/claude-code-plugins-plus-skills/skills/16-api-integration/integration-test-generator Skill
2,628★ repo
425 plugins, 2,810 skills, 200 agents for Claude Code. Open-source marketplace at tonsofskills.com with the ccpi CLI package manager.
Pytest ml tester
a5c-ai/babysitter/library/specializations/data-science-ml/skills/pytest-ml-tester Skill
1,665★ repo
Babysitter enforces obedience on agentic workforces and enables them to manage extremely complex tasks and workflows through deterministic, hallucination-free self-orchestration
Jest testing
a5c-ai/babysitter/library/specializations/qa-testing-automation/skills/jest-testing Skill
1,665★ repo
Babysitter enforces obedience on agentic workforces and enables them to manage extremely complex tasks and workflows through deterministic, hallucination-free self-orchestration
Pytest testing
a5c-ai/babysitter/library/specializations/qa-testing-automation/skills/pytest-testing Skill
1,665★ repo
Babysitter enforces obedience on agentic workforces and enables them to manage extremely complex tasks and workflows through deterministic, hallucination-free self-orchestration
Jest
a5c-ai/babysitter/library/specializations/web-development/skills/jest Skill
1,665★ repo
Babysitter enforces obedience on agentic workforces and enables them to manage extremely complex tasks and workflows through deterministic, hallucination-free self-orchestration
Vitest
a5c-ai/babysitter/library/specializations/web-development/skills/vitest Skill
1,665★ repo
Babysitter enforces obedience on agentic workforces and enables them to manage extremely complex tasks and workflows through deterministic, hallucination-free self-orchestration
Test patterns
rohitg00/skillkit/packages/core/src/methodology/packs/testing/test-patterns Skill
1,458★ repo
Supercharge AI coding agents with portable skills. Install, translate & share skills across Claude Code, Cursor, Codex, Copilot & 40 more
Test guard
amElnagdy/guard-skills/skills/test-guard Skill
1,154★ repo
Guard skills for coding agents, quality gates that catch AI-generated failure modes in code, tests, and docs
Vitest
jezweb/claude-skills/plugins/dev-tools/skills/vitest Skill
966★ repo
Skills for Claude Code CLI such as full stack dev Cloudflare, React, Tailwind v4, and AI integrations.
Integration test scaffold
rshankras/claude-code-apple-skills/skills/testing/integration-test-scaffold Skill
621★ repo
Claude Code skills for Apple platform development (iOS, macOS, iPadOS) — product validation, code generation, App Store optimization, and more
Snapshot test setup
rshankras/claude-code-apple-skills/skills/testing/snapshot-test-setup Skill
621★ repo
Claude Code skills for Apple platform development (iOS, macOS, iPadOS) — product validation, code generation, App Store optimization, and more
Unit test generator
JackyST0/awesome-agent-skills/examples/unit-test-generator Skill
619★ repo
🤖 精选的 AI Agent Skills 列表，适用于 Cursor、Claude Code、GitHub Copilot 等 AI 编程工具
Unit test static c functions with loops using gmock
ECNU-ICALK/AutoSkill/SkillBank/ConvSkill/english_gpt3.5_8/unit-test-static-c-functions-with-loops-using-gmock Skill
no license551★ repo
AutoSkill: Experience-Driven Lifelong Learning via Skill Self-Evolution

All 515 in the catalog