mocking-assistant

Generate stable API, service, and UI component mocks with MSW.

Updated Jan 24, 2026
One-click install
npx skills add https://github.com/Camilo8902/GabyCosmetics --skill mocking-assistant-camilo8902
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: mocking-assistant
Source: https://github.com/Camilo8902/GabyCosmetics/tree/main/.claude/skills/mocking-assistant
Command: npx skills add https://github.com/Camilo8902/GabyCosmetics --skill mocking-assistant-camilo8902

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill streamlines the development and testing process by enabling the creation of reliable mocks for APIs, services, and UI components, ensuring consistent and isolated testing environments.

Core Features & Use Cases

  • API Mocking with MSW: Define mock API responses for various HTTP methods (GET, POST) and scenarios, including error handling and delayed responses.
  • Fixture Management: Utilize predefined data fixtures for consistent and reusable mock data.
  • Service & Function Mocking: Mock entire services or individual functions for isolated unit and integration testing.
  • Use Case: When developing a new feature that relies on an external API, use this Skill to mock the API's responses, allowing you to test your frontend components and logic without depending on the actual backend being available or stable.

Quick Start

Use the mocking-assistant skill to create MSW handlers for a GET /api/users/:id endpoint.

Frequently Asked Questions about mocking-assistant

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I create stable API mocks for frontend testing when the backend is unavailable?

You create service mocks using MSW handler definitions and fixture conventions. This approach allows frontend development and testing to proceed independently by simulating realistic data, error scenarios, and controlled response timing without relying on the actual backend.

What is the best way to mock service responses and error scenarios for isolated unit testing?

Service mocking isolates unit tests by generating predefined data fixtures and simulating error scenarios with controlled timing. This approach ensures consistent test execution by replacing actual service dependencies with reliable, predefined mock responses.

Can I use MSW to mock a GET request for a specific API endpoint?

Yes, MSW supports mocking specific API endpoints like GET /api/users/:id by generating custom handlers. You define HTTP methods, response payloads, and status codes to simulate realistic API behavior for testing and development workflows.

How do I manage fixture data for consistent and reusable test mocks?

Fixture management utilizes predefined data fixtures to ensure consistent and reusable mock data across your testing workflows. This allows you to maintain stable API mocks and simulate realistic data without depending on external services.

Does API mocking support testing delayed responses and error handling?

API mocking supports testing delayed responses and error handling scenarios. You can define mock API responses that simulate controlled timing and network errors to thoroughly test your application's resilience during frontend testing.