How to test React sites and apps

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If you want to know how to test React, you're in the right place. Do you really know your code does what it is supposed to do? Have you tested it in the browser? What if you haven’t, or you can’t test everything, and it breaks in production?

A testing library is a group of utilities developers use to write individual tests on application components. Some of the principle parts of a test are:

• Description: describes what the test is about
• Use/Render: uses the component in an environment where it can be tested
• Mocking: creates pretend functions, so that you can check your assumptions

Over the course of this article, I’m going to explore some examples from the React Testing Library in order to help you get started with this valuable way of improving the robustness of your code output, as well as ensuring your code doesn’t throw up any nasty surprises once it goes into production.

Want more useful resources? Here's our rundown of the best web design tools around that'll help you work smarter. Or if you need a new machine, try this roundup of the best laptops for programming.

This content originally appeared in net magazine. Read more of our web design articles here. 

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