How do I run tests with coverage in Bun?

You can generate coverage reports by running 'bun test --coverage'. This skill guides Claude on how to execute and interpret these results.

Does this skill require installing Jest?

No, Bun Testing utilizes Bun's built-in test runner which provides Jest-compatible APIs out of the box, eliminating the need for external testing dependencies.

Can I use this for mocking API calls?

Yes, the skill includes implementation patterns for using mock.module and function mocks to isolate your code from external API dependencies during testing.

Does Bun support snapshot testing?

Yes, Bun has native support for snapshot testing using the .toMatchSnapshot() matcher, and this skill provides the correct patterns for its implementation.

Bun Testing

Name: Bun Testing
Author: TheBushidoCollective

byTheBushidoCollective

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Security & Testing

Implements high-performance testing strategies using Bun's native test runner and Jest-compatible APIs.

About

The Bun Testing skill empowers developers to leverage Bun's ultra-fast, built-in test infrastructure within the Claude Code environment. It provides comprehensive guidance on writing unit and integration tests using bun:test, managing complex mocks for both functions and modules, and performing snapshot testing. By enforcing best practices like proper setup/teardown hooks and avoiding external runner overhead, this skill ensures a streamlined, deterministic, and highly efficient testing workflow for modern TypeScript and JavaScript applications.

Key Features

Automated test organization using standard describe and test blocks
Full support for Jest-compatible matchers and assertions
Seamless integration with Bun's native, high-performance test runner
Efficient snapshot testing for UI and complex data structures
72 GitHub stars
Advanced module and function mocking capabilities via mock.module

Use Cases

Writing high-performance unit tests for TypeScript APIs and microservices
Migrating slow Jest or Vitest suites to Bun's faster test infrastructure
Automating API endpoint and file system integration testing

About

Key Features

Automated test organization using standard describe and test blocks
Full support for Jest-compatible matchers and assertions
Seamless integration with Bun's native, high-performance test runner
Efficient snapshot testing for UI and complex data structures
72 GitHub stars
Advanced module and function mocking capabilities via mock.module

Use Cases

Writing high-performance unit tests for TypeScript APIs and microservices
Migrating slow Jest or Vitest suites to Bun's faster test infrastructure
Automating API endpoint and file system integration testing