What is the Jest Testing Patterns skill?

It is a specialized capability for Claude Code that provides expert-level guidance and code generation for the Jest testing framework, covering unit tests, integration tests, and mocking.

Does it support React component testing?

Absolutely. It provides patterns for using React Testing Library alongside Jest to verify UI rendering, handle user input, and wait for asynchronous state changes.

How does it handle asynchronous code?

The skill provides best practices for testing promises and async/await functions, including specialized matchers like .resolves and .rejects, as well as managing fake timers.

Can this skill help with mocking external APIs?

Yes, it includes advanced patterns for module mocking and partial mocking, allowing you to simulate external dependencies like Axios or database clients without making real network calls.

Jest Testing Patterns

Name: Jest Testing Patterns
Author: TheBushidoCollective

byTheBushidoCollective

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보안 및 테스팅

Implements robust Jest testing strategies including unit tests, complex mocking, spies, and snapshot assertions for comprehensive JavaScript code coverage.

소개

The Jest Testing Patterns skill equips Claude with advanced capabilities to architect, write, and debug tests within the Jest framework. It provides specific implementation patterns for managing test suites, handling asynchronous operations, and utilizing sophisticated mocking techniques for both functions and entire modules. Whether you are building React components or backend APIs, this skill ensures that your testing infrastructure is maintainable, follows industry best practices, and provides the necessary coverage to prevent regressions in professional software environments.

주요 기능

Test suite organization using nested describe blocks and lifecycle hooks
Snapshot testing for UI components and complex data structures
Implementation of spies for monitoring method calls and global functions
Advanced mocking of functions, external modules, and partial imports
39 GitHub stars
Integration with React Testing Library for component-level verification

사용 사례

Implementing unit tests for complex business logic and utility functions
Creating regression tests for React components using snapshots and user event simulations
Mocking API calls and database interactions to isolate test environments

소개

주요 기능

Test suite organization using nested describe blocks and lifecycle hooks
Snapshot testing for UI components and complex data structures
Implementation of spies for monitoring method calls and global functions
Advanced mocking of functions, external modules, and partial imports
39 GitHub stars
Integration with React Testing Library for component-level verification

사용 사례

Implementing unit tests for complex business logic and utility functions
Creating regression tests for React components using snapshots and user event simulations
Mocking API calls and database interactions to isolate test environments