April 2018
Intermediate to advanced
298 pages
6h 34m
English
Content preview from React 16 Tooling
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Running tests using standalone Jest
The test script from react-scripts that you just learned about in the previous section is a great tool to have running in the background while you're building your application. It gives you immediate feedback as you implement components and unit tests.
Other times, you just want to run all tests and have the process exit as soon as the result output is printed. For example, if you're integrating Jest output into a continuous integration process or if you just want to see test results run once, you can run Jest directly.
Let's try running Jest on its own. Make sure that you're in your project directory still and that you've stopped the npm test script from running. Now just run:
jest
Rather than running ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.