Which testing frameworks does the Test Doubles Generator support?

The skill natively supports popular frameworks like Jest and Sinon, and can generate code for others if specified in the prompt.

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

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

Does it automatically identify dependencies?

Yes, the skill analyzes the provided code context to identify external imports and services that require mocking for isolated unit testing.

How do I trigger the test double generation?

You can use the slash commands /gen-doubles or /gd, or simply ask Claude to generate mocks for a specific file or function.

Unit Test Doubles Generator

Name: Unit Test Doubles Generator
Author: jeremylongshore

byjeremylongshore

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884

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Security & Testing

Generates mocks, stubs, and spies for unit tests by automatically analyzing code dependencies and supporting popular testing frameworks.

The Unit Test Doubles Generator streamlines the unit testing process by automating the creation of mocks, stubs, spies, and fakes. By analyzing your source code's dependencies, this skill identifies exactly what needs to be isolated and generates the appropriate test double code for frameworks like Jest and Sinon. It is an essential tool for developers looking to reduce boilerplate, increase test coverage, and ensure code units are tested in complete isolation without manual setup overhead.

Key Features

01Generates mocks, stubs, spies, and fakes

02Context-aware code generation tailored to specific functions

03Support for major frameworks including Jest and Sinon

04Slash command integration via /gen-doubles and /gd

05884 GitHub stars

06Automatic dependency analysis of source files

Use Cases

01Mocking external API calls to simulate various network responses in unit tests

02Creating stubs for complex service dependencies to control return values

03Implementing spies to verify interaction patterns and method call counts

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add jeremylongshore/claude-code-plugins-plus-skills test-doubles-generator

For use in Claude.ai and ChatGPT

Download Skill

Key Features

01Generates mocks, stubs, spies, and fakes

02Context-aware code generation tailored to specific functions

03Support for major frameworks including Jest and Sinon

04Slash command integration via /gen-doubles and /gd

05884 GitHub stars

06Automatic dependency analysis of source files

Use Cases

01Mocking external API calls to simulate various network responses in unit tests

02Creating stubs for complex service dependencies to control return values

03Implementing spies to verify interaction patterns and method call counts

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add jeremylongshore/claude-code-plugins-plus-skills test-doubles-generator

For use in Claude.ai and ChatGPT

Download Skill