In this tutorial, we’ll create a simple Todo app using React.js and TypeScript, initialized with Vite, and then we’ll write tests for it using Playwright. We will use playwright to do an end to end test which will simulate the user browser interaction with our todo app like adding new todos, deleting todos, upadtinhg todos e.t.c. By the end of this guide, you’ll have a solid understanding of how to use Playwright to test your React applications.

In this tutorial, we shall setup Jest and React Testing Library to perform integration test. We will be testing React.Js components, so this will not be an end to test, but we will be testing the individual coponents involved in the Todo App. At each stage, we will render the components invovled using the library functions provided by React Testing Library. We shall pass in properties to each component and test their behavious and visualisation by simulating clicks and text typing into textboxes using the appropriate functions. Jest will be used as our test runner. These two libraries are independent but work very well together. So let’s get started.