with troubleshooting You might find yourself and your environment (for development) depending on Docker Desktop, which used to be a nice free tool, but now (rightfully) charges money through a subscription for enterprises (and more recently also increased their prices). …

This chapter in the React/Jest saga provides an extensive list of examples of various types of tests and common usages of the testing library in a project. For the first two chapters of the story, check part 1, part 2 and part 3. Testing components: asserts by querying elements This pattern is useful if you want…

This chapter in the React/Jest saga provides you with a baseline on how to add some helpers to your project that can make your testing life easier, by extending the already provided testing utilities. If you want context, feel lost or just want to revisit previous chapters because they’re so…

This chapter describes the configurations used to make jest and react work together. Some of it it’s the default configuration, some of it it’s added to make things smoother and solve a set of common problems. NPM packages Packages that come pre-installed with create-react-app: jest + jest-***: the actual library and its…

Learn how to create and run UI tests for your React applications. Use JEST as the building framework, and a lot of libraries on top of it to make your life a bit complicated, but much easier. For this to work, it’s assumed that you’re already familiar with React (otherwise…