Unit testing

3,541 mods in this category, of every kind an agent can take. Each one carries what it costs per session, what the scan found, and whether it is the original.

qa

97

mjhcompany/cca

Agent

You are the Quality Assurance specialist agent in the CCA system.

not rated 5 7mo ago A 0 tokens original MIT

testing-master

98

wan-aishengtang/testing-master-skill

Skill Claude CodeCodex

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 2mo ago A 138 tokens original MIT

review-loop

99

silverThunder09/jdsnack-agent-os-project

Skill Claude CodeCodex

A handoff loop in which Claude reviews a Codex coding change and decides whether it meets the project's requirements. It runs build, test, lint, and change-size checks before assigning a score and requesting revisions when needed.

not rated 5 changed today A 116 tokens original MIT

ably-new-command

100

ably/ably-cli

Skill Claude CodeCodex

Scaffold new CLI commands with tests for the Ably CLI (oclif + TypeScript). Use this skill whenever creating a new command, adding a subcommand, migrating a command, or scaffolding a command with its test file — even if described casually (e.g., 'I need an ably X Y command', 'can you build ably rooms typing…

not rated 5 3d ago A 107 tokens original Apache-2.0

julienkay/com.doji.package-authoring

Skill Claude CodeCodex

Add or revise Unity editor tests in the existing package-authoring test suite. Use when creating regression coverage for generated package or project output, scripting API behavior, token resolution, manifest content, or test suite architecture under com.doji.package-authoring/Tests/Editor.

not rated 5 3mo ago A 61 tokens original MIT

dotnet-testing

102

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 5mo ago A 127 tokens original MIT

Chromanche CLAUDE.md

103

marcobazzani/Chromanche

Instructions file

Claude Code instructions for marcobazzani/Chromanche, covering chromanche — engineering guardrails, testing is non-negotiable, unit tests (vitest), integration tests and red tests block merge.

not rated 5 2mo ago A 997 tokens

n-n-code/n-n-code-skills

Skill Claude CodeCodex

Use when writing, reviewing, or hardening Go tests that rely on stretchr/testify — assert, require, mock, and suite — including table-driven tests, subtests, parallel tests, mocks versus hand-written fakes, error-wrap assertions, and flaky test triage with -race and -count.

not rated 4 7d ago A 75 tokens original MIT

testing

106

WeftCut/WeftCut

Agent

Where WeftCut's tests live, why they're split the way they are, and how to run each layer. There is no single tests/ directory — that's deliberate (see Why not one directory). Tests are grouped by runner, not scattered by neglect.

not rated 4 changed today A 0 tokens original MIT

test-generator

107

u9401066/nsforge-mcp

Skill Claude CodeCodex

A test-building tool for generating several kinds of checks for code. It covers static analysis, which examines code without running it, plus unit, integration, and end-to-end tests and coverage reports.

not rated 4 5d ago A 58 tokens original Apache-2.0

bjoern-zgr

108

Mehtrick/bjoern

Skill Claude CodeCodex

Use when writing, reviewing, or refactoring .zgr specification files for the Bjoern BDD test generator. Covers syntax, parameter usage for statement reuse, and conventions that reduce the number of methods to implement.

not rated 4 13d ago A 50 tokens original MIT

flutter-testing

109

jyotiraditya-chauhan/test-kit

Skill Claude CodeCodex

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 4 15d ago A 96 tokens original MIT

test-generator

110

u9401066/template-is-all-you-need

Skill Claude CodeCodex

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 6mo ago A 98 tokens original Apache-2.0

testing-arsenal

111

FutureJJ/claude-skills

Skill Claude CodeCodex

Testing strategies including unit tests, integration tests, E2E tests, mocking, coverage analysis, and TDD workflow. Trigger when users need help writing tests, choosing testing frameworks, implementing mocking strategies, or setting up test infrastructure.

not rated 3 6mo ago A 51 tokens original MIT

crucible

112

gpanakkal/crucible

Skill Claude CodeCodex

Write solid unit tests using property-based testing and mutation testing. Use whenever unit tests are being written, fixed, audited, or reviewed in a TypeScript project; whether the user asks directly or test-writing occurs as a step inside another workflow (TDD, feature implementation, bug fixing, code review). Also…

not rated 3 1mo ago A 98 tokens original MIT

rspec-let-do-blocks

113

panozzaj/cursor-rules

Cursor rule

Cursor rule "rspec-let-do-blocks" from panozzaj/cursor-rules, covering multi-line array, multi-line method call with keyword args, multi-line hash definition, complex single line expression and using { ... } for multi-line blocks.

not rated 3 1y ago A 0 tokens original MIT

tecton-unit-testing

114

tecton-ai/tecton-mcp

Cursor rule Cursor

Always follow these rules when creating or modifying Tecton unit tests.

not rated 3 1y ago A 13 tokens original MIT

vitest-mcp-server

115

madrus/vitest-mcp-server

MCP server Claude CodeCodexCursor +2

Advanced Model Context Protocol (MCP) server for Vitest testing with intelligent resources, coverage analysis, and AI-assisted development workflows. Runs locally from the @madrus/vitest-mcp-server npm package.

not rated 3 1y ago A tokens not measured original MIT

testforge

117

whaojie797-design/Novera-AI-skills

Skill Claude CodeCodex

A test-generation tool for Python that creates runnable pytest tests. Pytest is a Python tool for writing and running automated tests.

not rated 2 1mo ago A 73 tokens

bulk-test-writer

118

cagdasyurekli/codex-agy-worker

Agent

Writes tests for existing behaviour. Adds and edits test files only — never touches production code. Use for coverage backfill where the bulk of the work is mechanical.

not rated 2 6d ago A 37 tokens original MIT

gut-skill

119

rockerBOO/gut-skill

Plugin Claude Code

Bundles 1 skill · 50 tokens together

Claude Code skill for the GUT (Godot Unit Testing) framework — test structure, assertions, doubles, async helpers, memory management, and CLI usage for GDScript.

not rated 2 4mo ago A tokens not measured GPL-3.0

pytest-expert

120

Blazkojj/skillhub

Skill Claude CodeCodex

Pytest fixtures, parametrize, mock/monkeypatch, async testing with pytest-asyncio, and coverage reporting.

not rated 2 17d ago A 29 tokens

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: