November 2017
Beginner to intermediate
398 pages
8h 42m
English
Content preview from Vue.js 2 Web Development Projects
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Updating the snapshots
If you modify a component, there is a chances that its HTML render will change too. This means its snapshots will no longer be valid and the Jest tests will fail. Fortunately, the jest command has a --updateSnapshots argument. When used, all the failing snapshots will be resaved and will pass.
- Let's add a new script in our package.json file:
"jest:update": "jest --updateSnapshot"
- Modify the BaseButton component by changing a CSS class, for example. If your run the Jest tests again, you should get an error that says, the snapshots don't match anymore.
- Now, update the snapshot with the new script:
npm run jest:update ...
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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.