testing

567

LedgerHQ

Write unit and integration tests for Ledger Wallet apps. Use for Jest tests (Desktop/Mobile), MSW handlers, or testing best practices.

msw

376

a5c-ai

Mock Service Worker API mocking, request handlers, and integration testing.

tanstack-query

241

MadAppGang

Comprehensive TanStack Query v5 patterns for async state management. Covers breaking changes, query key factories, data transformation, mutations, optimistic updates, authentication, testing with MSW, and anti-patterns. Use for all server state management, data fetching, and cache invalidation tasks.

testing-patterns

97

yonatangross

Comprehensive testing patterns for unit, integration, E2E, pytest, API mocking (MSW/VCR), test data, property/contract testing, performance, LLM, and accessibility testing. Use when writing tests, setting up test infrastructure, or validating application quality.

MSW Mock Service Worker

71

PramodDutta

API mocking with Mock Service Worker for browser and Node.js environments including request interception, response simulation, and network error testing.

security-audit

67

mswell

Comprehensive security code audit using multi-phase analysis (Assessment → STRIDE Threat Modeling → Code Review → Report). Use when asked to perform security review, vulnerability assessment, code audit, pentest code review, find security bugs, or analyze code for vulnerabilities. Optimized for bug bounty hunting with concrete evidence and exploitability validation.

creating-stories

64

coveo

Creates and modifies Storybook stories for Atomic components and sample pages. Uses MSW for API mocking, follows ui-kit conventions. Use when creating stories, adding component examples, building sample pages, debugging MSW mock pollution, or when user mentions Storybook, stories, visual testing, or e2e tests that reference stories.

tanstack-query

56

pproenca

TanStack Query v5 performance optimization for data fetching, caching, mutations, and query patterns. This skill should be used when using useQuery, useMutation, queryClient, prefetch patterns, or TanStack Query caching. This skill does NOT cover generating query hooks from OpenAPI (use orval skill) or mocking API responses in tests (use test-msw skill).

tdd

56

pproenca

Test-Driven Development methodology and red-green-refactor workflow (formerly test-tdd). This skill should be used when practicing TDD, writing tests first, designing tests before implementation, or reviewing test-first approaches. Triggers on "write tests first", "test before code", "red green refactor", "test driven development". This skill does NOT cover Vitest framework specifics (use vitest skill) or API mocking with MSW (use msw skill).

msw

56

pproenca

MSW (Mock Service Worker) best practices for API mocking in tests (formerly test-msw). This skill should be used when setting up MSW, writing request handlers, or mocking HTTP APIs. This skill does NOT cover general testing patterns (use test-vitest or test-tdd skills) or test methodology.

vitest

56

pproenca

Vitest testing framework patterns for test setup, async testing, mocking with vi.*, snapshots, and test performance (formerly test-vitest). This skill should be used when writing or debugging Vitest tests. This skill does NOT cover TDD methodology (use test-tdd skill), API mocking with MSW (use test-msw skill), or Jest-specific APIs.

orval

56

pproenca

Orval OpenAPI TypeScript client generation best practices. This skill should be used when configuring Orval, generating TypeScript clients from OpenAPI specs, setting up React Query/SWR hooks, creating custom mutators, or writing MSW mocks. Triggers on tasks involving orval.config.ts, OpenAPI codegen, API client setup, or mock generation.

testing

26

SalesforceCommerceCloud

Writing tests for the B2C CLI project using Mocha, Chai, and MSW. Use when writing unit or integration tests, mocking HTTP requests with MSW, testing CLI commands with oclif, isolating config in tests, or setting up test coverage.

analyzing-test-coverage

26

saleor

Creates and analyzes tests using Vitest and MSW patterns. Use when writing unit tests, integration tests, analyzing coverage gaps, setting up MSW handlers, vi.fn mocks, test builders, or debugging test failures. Do NOT use for non-test TypeScript code.

windows-git-bash-testing

19

JosiahSiegel

Windows and Git Bash testing compatibility guide for Vitest, Playwright, and MSW with path conversion patterns

component-testing

18

jpmorgan-payments

Comprehensive testing patterns for React components with MSW, React Query, and Vitest. Use when writing tests, setting up mocks, testing API interactions, or ensuring 80% coverage. Keywords - testing, MSW, React Query, Vitest, mocks, coverage, API testing.

Mocking Assistant

12

patricio0312rev

Creates stable mocks for APIs, services, and UI components using MSW (Mock Service Worker), fixture conventions, and example patterns. Use for "API mocking", "MSW", "test mocks", or "service mocking".

api-mock-server

12

patricio0312rev

Creates mock API servers for testing and development with MSW, json-server, or custom handlers. Use when users request "API mocking", "mock server", "MSW setup", "test fixtures", or "mock API responses".

Vue Development

11

alexanderop

Use when planning or implementing Vue 3 projects - helps architect component structure, plan feature implementation, and enforce TypeScript-first patterns with the Composition API, defineModel for v-model bindings, Testing Library for user-behavior tests, and MSW for API mocking. Especially useful in the planning phase to guide proper patterns before writing code.

msw

9

TerminalSkills

Assists with intercepting network requests for API mocking using Mock Service Worker (MSW). Use when mocking REST or GraphQL APIs for unit tests, integration tests, or local development without modifying application code or running mock servers. Trigger words: msw, mock service worker, api mocking, test mocking, request handlers, setupServer.

workleap-squide

7

workleap

Squide (@squide/firefly) — Workleap's React modular application shell. Use when: (1) Working with FireflyRuntime, initializeFirefly, AppRouter, or FireflyProvider (2) Creating or modifying Squide host applications or modules (3) Registering routes, navigation items, or MSW request handlers (4) Squide integrations with TanStack Query, i18next, LaunchDarkly, Honeycomb, MSW, or Storybook (5) Deferred registrations or conditional navigation items (6) Global data fetching: usePublicDataQueries, useProtectedDataQueries (7) Squide hooks for event bus, environment variables, feature flags, logging, or bootstrapping state (8) Error boundaries or modular architecture in Squide applications

quality-analysis

7

seanmcquaid

Creates comprehensive tests following the three-tier testing strategy. Expert in unit tests, integration tests with MSW, and E2E tests with Playwright.

atelier-typescript-testing

6

martinffx

TypeScript testing patterns with Vitest and MSW. Use when writing unit tests, mocking APIs, creating typed mocks for dependency injection, or using snapshot testing.

tech-vitest

5

ravnhq

Vitest-specific testing utilities — vi.mock, vi.fn, fake timers, MSW. Use when writing tests with Vitest, mocking dependencies, or setting up test infrastructure.

frontend-testing

4

gitwalter

Vitest setup and configuration, React Testing Library patterns, component testing (render, fireEvent, waitFor), mock patterns (MSW for API mocking), Playwright E2E testing, snapshot testing strategy, and coverage configuration.

testing-frontend

4

gitwalter

Vitest setup and configuration, React Testing Library patterns, component testing (render, fireEvent, waitFor), mock patterns (MSW for API mocking), Playwright E2E testing, snapshot testing strategy, and coverage configuration.

react-implementer-prompt

fiatkongen

Use when dispatching a React frontend subagent from an implementation plan with React 19, Vitest/RTL/MSW, Zustand, and Tailwind v4

web-mocks-msw

agents-inc

MSW handlers, browser/server workers, test data. Use when setting up API mocking for development or testing, creating mock handlers with variants, or sharing mocks between browser and Node environments.

api-testing

medy-gribkov

Contract testing with Pact, API mocking with MSW, load testing with k6/Locust, OpenAPI validation, and Postman/Insomnia automation. Code-first patterns for catching regressions before they reach production.