React Testing Masterclass 2026 – Unit & E2E Guide

This course features Coursera Coach! A smarter way to learn with interactive, real-time conversations that help you test your knowledge, challenge assumptions, and deepen your understanding as you progress through the course. This course builds strong testing skills for modern React applications. You will learn how to write effective unit and end-to-end tests that improve reliability, reduce bugs, and increase confidence when maintaining or scaling React projects. You begin by setting up a React testing environment and understanding core testing concepts. The course then focuses on unit testing with Vitest, covering components, props, state, effects, custom hooks, and mocking techniques through guided lessons and real project examples. As you progress, you will test React Context and Redux logic, validating reducers and connected components. The course concludes with end-to-end testing to verify complete user workflows and interactions in a realistic React application. By the end of the course, you will be able to write reliable unit tests and implement end-to-end testing for real-world React applications. This intermediate-level course is ideal for React developers with basic JavaScript and React knowledge.