What frameworks does this skill support?

The skill supports popular JavaScript and TypeScript testing frameworks, including Jest and Sinon, ensuring the generated code fits your environment.

How do I trigger the test double generation?

You can trigger the skill by using the /gen-doubles or /gd command, or by asking Claude to generate mocks for a specific file or function.

Can it handle complex dependencies?

Yes, it performs a dependency analysis on your code to identify external imports and services that need to be replaced with test doubles.

Does this skill write the entire test file?

It focuses on generating the necessary test doubles (mocks, stubs, etc.), providing the snippets you need to integrate into your test suite.

Test Doubles Generator

Name: Test Doubles Generator
Author: jeremylongshore

byjeremylongshore

•

883

Security & Testing

Generates mocks, stubs, and spies automatically for unit testing by analyzing code dependencies.

About

This skill automates the creation of test doubles, including mocks, stubs, spies, and fakes, to isolate units of code during testing. By analyzing source code to identify dependencies, it streamlines the unit testing process and ensures compatibility with popular frameworks like Jest and Sinon. It is particularly useful for developers looking to reduce the manual boilerplate involved in setting up complex test environments and API simulations, allowing for faster and more reliable software verification.

Key Features

Generation of mocks, stubs, spies, and fakes
Support for multiple frameworks including Jest and Sinon
Seamless integration with existing unit test files
Command-line triggers via /gen-doubles and /gd
Automatic dependency analysis for source code
883 GitHub stars

Use Cases

Implementing spies to verify function calls and interaction patterns
Mocking external API calls to create isolated unit tests
Creating stubs for database or service dependencies to control test behavior

About

Key Features

Generation of mocks, stubs, spies, and fakes
Support for multiple frameworks including Jest and Sinon
Seamless integration with existing unit test files
Command-line triggers via /gen-doubles and /gd
Automatic dependency analysis for source code
883 GitHub stars

Use Cases

Implementing spies to verify function calls and interaction patterns
Mocking external API calls to create isolated unit tests
Creating stubs for database or service dependencies to control test behavior