Can it help me with mocking external modules?

Absolutely. It provides specific patterns for manual mocks, function spying, and mocking complex ES6 classes or third-party libraries.

Is there support for frontend frameworks like React or Vue?

Yes, the skill contains dedicated guides for testing React and Vue applications using Jest best practices.

How does it help with Jest configuration?

It provides templates and detailed explanations for jest.config.js options, Babel integration, and CLI flags to optimize your test runner.

Does this skill support TypeScript testing?

Yes, it includes specialized guidance and templates for configuring and writing Jest tests in TypeScript environments.

Jest Testing Framework

Name: Jest Testing Framework
Author: partme-ai

bypartme-ai

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Security & Testing

Streamlines unit and integration testing by providing expert guidance on Jest matchers, mocking, snapshots, and project configuration.

About

This skill empowers Claude with comprehensive knowledge of the Jest testing ecosystem, enabling it to assist developers in writing robust tests for JavaScript and TypeScript applications. It provides structured guidance on everything from basic assertions and asynchronous testing to advanced module mocking, snapshot testing, and complex environment configurations for frameworks like React and Vue. By following official documentation patterns and industry best practices, this skill helps ensure high-quality code coverage and reliable test suites.

Key Features

Asynchronous testing patterns for promises and async/await
Snapshot testing implementation and best practices
37 GitHub stars
Advanced mocking for functions, modules, and ES6 classes
Comprehensive guidance for Jest matchers and assertions
Environment-specific configuration for React, Vue, and TypeScript

Use Cases

Setting up Jest configurations and coverage reports for new or existing projects
Writing isolated unit tests for complex business logic and asynchronous functions
Mocking external API dependencies and third-party modules to stabilize test environments

About

Key Features

Asynchronous testing patterns for promises and async/await
Snapshot testing implementation and best practices
37 GitHub stars
Advanced mocking for functions, modules, and ES6 classes
Comprehensive guidance for Jest matchers and assertions
Environment-specific configuration for React, Vue, and TypeScript

Use Cases

Setting up Jest configurations and coverage reports for new or existing projects
Writing isolated unit tests for complex business logic and asynchronous functions
Mocking external API dependencies and third-party modules to stabilize test environments