How do I trigger the generation of mocks in Claude Code?

You can trigger the skill by using the shortcut commands /gen-doubles or /gd, or by simply asking Claude to generate test doubles for a specific file.

Does this skill analyze my actual source code?

Yes, it performs a dependency analysis on your provided code snippets or files to identify exactly which external functions or services need to be mocked.

Can I choose between a mock, a stub, or a spy?

Absolutely. You can specify the type of test double you need based on whether you want to verify behavior, control responses, or track interactions.

Which testing frameworks does the Test Doubles Generator support?

The skill supports popular JavaScript testing frameworks such as Jest and Sinon, and can be adapted for others by specifying the framework in your request.

Test Doubles Generator

Name: Test Doubles Generator
Author: BbgnsurfTech

byBbgnsurfTech

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Security & Testing

Automates the creation of mocks, stubs, spies, and fakes to accelerate unit testing workflows across multiple frameworks.

The Test Doubles Generator skill streamlines the unit testing process by automatically analyzing code dependencies and generating appropriate test doubles. By identifying external calls and service dependencies, it produces production-ready mocks, stubs, spies, and fakes tailored to specific frameworks like Jest or Sinon. This tool is essential for developers looking to isolate units of code effectively, reduce boilerplate manual testing code, and maintain high code coverage with minimal effort.

Key Features

01Support for major frameworks including Jest and Sinon

02Direct code insertion into existing test suites

03Command-line triggers via /gen-doubles and /gd

043 GitHub stars

05Automatic dependency analysis of source files

06Generation of mocks, stubs, spies, and fakes

Use Cases

01Mocking external API responses to test data handling logic

02Implementing spies to verify function call counts and interaction patterns

03Creating stubs for complex service dependencies to control test outcomes

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add bbgnsurftech/claude-skills-collection test-doubles-generator

For use in Claude.ai and ChatGPT

Download Skill