Complex UI elements in Geb browser functional tests

Browser functional testing is a great way to verify your web application fully works end-to-end. Interacting with standard web page elements like links and forms is often straightforward, but driving more complex UI elements such as sliders and date pickers can get tricky. In this post we’ll go through some examples of working with these types of elements using the Geb functional testing framework.

Using mouse

In this example we’ll move a slider element using the mouse. Geb provides an interact block that we can use to drive the mouse using Selenium Actions. Here we’ll click the slider element, move it horizontally be a given number of pixels, then release the slider.

Using keyboard

Another way to interact with these types of elements is using the keyboard. With Geb we can use the left-shift operator to send keystrokes to any UI element.

For example, if you wanted to send the individual keys for each letter in the word “value” to an input field, you can use:

Or if you want to send a non-character keystroke, such as using the right arrow to move a slider, you can use:

Using raw Javascript

And if all else fails, you can use Geb’s support for running raw Javascript inside your test to interact with an element. One common use of this technique is to click an element that is difficult to make visible using a test. Maybe something like a mouse-over menu that is tricky to hover over in a test. Selenium (which Geb is based upon) doesn’t allow interacting with hidden elements, but we can use some jQuery in our test to get around this restriction.

Example code

A full Geb example including some the code samples above is on my Geb example Github repo.

Happy testing!

About the Author

Object Partners profile.

One thought on “Complex UI elements in Geb browser functional tests

  1. Doug says:

    Great info Craig

Leave a Reply

Your email address will not be published. Required fields are marked *

Related Blog Posts
Designing Kubernetes Controllers
There has been some excellent online discussion lately around Kubernetes controllers, highlighted by an excellent Speakerdeck presentation assembled by Tim Hockin. What I’d like to do in this post is explore some of the implications […]
React Server Components
The React Team recently announced new work they are doing on React Server Components, a new way of rendering React components. The goal is to create smaller bundle sizes, speed up render time, and prevent […]
Jolt custom java transform
Jolt is a JSON to JSON transformation library where the transform is defined in JSON. It’s really good at reorganizing the json data and massaging it into the output JSON you need. Sometimes, you just […]
Page Object Model for UI Testing