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React Design Patterns and Best Practices - Second Edition
book

React Design Patterns and Best Practices - Second Edition

by Carlos Santana Roldán
March 2019
Intermediate to advanced content levelIntermediate to advanced
350 pages
7h 28m
English
Packt Publishing
Content preview from React Design Patterns and Best Practices - Second Edition

Painless JavaScript testing with Jest

The most important way to learn how to test React components in the right way is by writing some code, and that is what we are going to do in this section.

The React documentation says that at Facebook they use Jest to test their components. However, React does not force you to use a particular test framework, and you can use your favorite one without any problems.

To see Jest in action, we are going to create a project from scratch, installing all the dependencies and writing a component with some tests. It'll be fun!

The first thing to do is to move into a new folder and run the following:

  npm init

Once package.json is created, we can start installing the dependencies, with the first one being the ...

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Publisher Resources

ISBN: 9781789530179Supplemental Content