So if you don't know how to write unit tests, or how to use a mocking framework like https://easymock.org/ then you'll probably not find this principle very useful at all. That's okay. Just keep a note of it in the back of your mind, and then spend a few months writing unit tests for your code. At sound point, you'll find writing unit tests pretty painful, and that's probably where you'll discover mocking. Spend... Source: almost 2 years ago

React Testing Library - https://testing-library.com/docs/react-testing-library/intro/. - Source: dev.to / about 1 month ago

React Testing Library: provides utilities to make testing easier. - Source: dev.to / 2 months ago

Since we are testing the front-end, we will also rely on the React Testing Library, which provides support for rendering components and custom queries in the DOM. - Source: dev.to / 3 months ago

It’s not to say 100% coverage is the way to go, but at least some functional testing with something like react-testing-library and cypress can save a lot of time. - Source: dev.to / 6 months ago

If you happen to be using React Testing Library in your project, you'll need to keep the jsdom dev dependency installed. - Source: dev.to / 6 months ago