Skip to Content
React 16 Tooling
book

React 16 Tooling

by Adam Boduch, Christopher Pitt
April 2018
Intermediate to advanced content levelIntermediate to advanced
298 pages
6h 34m
English
Packt Publishing
Content preview from React 16 Tooling

Mock everything except the application code

The last thing you want to spend time on is testing someone else's code. Yet, sometimes you're forced to do exactly that. For example, let's say that you want to test a function that makes a fetch() call to some HTTP API. Another example: your React component uses some library to help set and manipulate its state.

In both of these examples, there's code that you didn't implement that's being run when your unit tests run. You definitely don't want to reach out to an external system over HTTP. You definitely don't want to make sure that the state of your component is being set correctly based on the output of functions from another library. For the code that we don't want to test, Jest provides a ...

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Start your free trial

You might also like

Pro React 16

Pro React 16

Adam Freeman

Publisher Resources

ISBN: 9781788835015Supplemental Content