Discover how to implement testing in Next.js 13 with React Testing Library, Jest, and TypeScript in this 25-minute tutorial video. Follow a step-by-step guide to set up testing in a Next.js project with App Router and TypeScript. Learn to write your first tests using the AAA (Arrange, Act, Assert) pattern and explore multiple test scenarios for a single component. Gain insights into resolving current issues between Next.js and Jest, configuring Jest, setting up ESLint, and writing effective component tests. By the end of this tutorial, you'll have a solid foundation for implementing robust testing practices in your Next.js applications.