Automating Karma and headless Chrome with Puppeteer

If you want to configure karma to use headless Chrome in a completely automated way without a global install of Chrome, this post is for you.

So enough talk, and let’s get started.

npm install --save-dev puppeteer karma-chrome-launcher

Now, I might have lied a little bit. We’re not going to use Chrome for this. We’re going to use Chromium. Why Chromium and not Chrome? Because Google Chrome requires you to accept a License Agreement on install, and that requires administration privileges which would defeat the whole purpose of having a local installation. In terms of running your tests, this shouldn’t have any relevant difference.

Just place the following code in your karma.conf.js file:

Fill in the rest of your karma configuration, and you should be ready to go.

With this new puppeteer method, the code will become much simpler:

And that’s it. Let me know in the comments if you have found a better way to do this.

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