vitest-unit-patterns

What problem does it solve?

This Skill helps you write fast, isolated unit tests for your JavaScript/TypeScript projects using Vitest, ensuring your business logic is robust and reliable without relying on external services.

Core Features & Use Cases

• Vitest Configuration: Set up Vitest with optimal configurations for coverage, environment, and path aliases.
• Mocking Strategies: Implement effective mocking for dependencies like databases, auth services, and external APIs.
• Testing Patterns: Learn best practices for testing API route handlers, business logic, and React hooks.
• Use Case: You need to test a complex utility function that relies on an external API. This Skill guides you on how to mock the API call, isolate the utility function, and assert its output.

Quick Start

Use the vitest-unit-patterns skill to create a new Vitest unit test file for the src/utils/formatDate.ts function.