A beginner’s guide to debugging React testing library tests, with a code walkthrough of how to use react-testing-library to debug tests.

A guide on how to do visual regression testing in a React app - a step-by-step tutorial. This includes an introduction to visual regression testing, spinning up an example app and a step-by-step guide on creating some visual regression tests.

Follow this step-by-step guide on Jest's SpyOn method, with a practical example using React and Fetch. This post also includes a comparison to mocks.

A guide on how to use React Testing Library's to wait for and test asynchronously loaded elements. Contains code examples and a step-by-step walkthrough.

Automated testing is an important aspect of software engineering. In the JavaScript ecosystem, TypeScript provides an extra layer of assurance with types in JavaScript. For testing, Jest has been the …

A guide on how to mock a JavaScript class using Jest, comparing dependency injection and mocking, along with guides on how to implement both.

A guide covering the benefits of visual regression testing, automated vs. manual testing, as well as a description of Meticulous, a tool for visual regression testing without a maintenance burden.

A guide on choosing the right visual regression testing tool.