Tag Archives: PhantomJS

Headless Browsing with PhantomJS

We’re using PhantomJS because it is Grunt’s preferred browser for anything automated that needs one. Like running JS Tests.

What is PhantomJS?

PhantomJS is a headless webkit browser. What does that mean? Well, it’s a webkit browser (like Chrome and Safari) that doesn’t have a visible interface.

Why use PhantomJS?

Because it gives you most of the benefits of running tests in a browser but it goes much faster and less intrusive. I say most because it is not designed to emulate the quirks of a particular mainstream browser, it is its own thing. However, because it is webkit it has a lot in common with others in that family.

Currently our main build process does not include Grunt, so we need to be able to run our JavaScript tests through Gradle as well. Originally our plan was to use JS Test Driver but we found that it does not sit well with RequireJS. There are apparently work arounds to fix JS Test Driver, but we opted instead to adopt Phantom as our test runner. This does mean our automated tests are not running in other browsers, but this should be temporary until Grunt is up and running anyway.

Unfortunately this JS Test Driver vs Phantom debate was something I had very little to do with, so I have no real thoughts on that.

That’s all I really have to say on the matter, if I had much direct interaction with it I’d probably like it less. Its real beauty is in how little I have to do because of it.

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