5 articles
Master unit testing in TypeScript with Vitest. Covers setup, writing tests, mocking modules and dependencies, spies, coverage, and testing Express route handlers and services.
Comprehensive comparison of Jest and Vitest in 2026 — performance benchmarks, TypeScript support, migration guide, and which framework to choose for Node.js and TypeScript projects.
Vitest and React Testing Library together form the modern testing stack for React applications. This guide covers setup, writing component tests, user interaction testing, mocking API calls, and best practices for maintainable test suites.
Complete testing guide for 2026 using Vitest for unit tests, React Testing Library for component tests, and Playwright for E2E tests. Includes CI configuration and coverage strategies.
Move beyond Jest mocks. Use Vitest for ESM support and speed, TestContainers for real databases, MSW for HTTP mocking, and contract testing with Pact for production confidence.