Sign In

Communications of the ACM

Practice

Testing Web Applications with State Objects


Testing Web Applications with State Objects, illustrative photo

Credit: Alicia Kubista / Andrij Borys Associates

back to top 

End-to-end testing of Web applications typically involves tricky interactions with Web pages by means of a framework such as Selenium WebDriver.12 The recommended method for hiding such Web-page intricacies is to use page objects,10 but there are questions to answer first: Which page objects should you create when testing Web applications? What actions should you include in a page object? Which test scenarios should you specify, given your page objects?

While working with page objects during the past few months to test an AngularJS (https://angularjs.org) Web application, I answered these questions by moving page objects to the state level. Viewing the Web application as a state chart made it much easier to design test scenarios and corresponding page objects. This article describes the approach that gradually emerged: essentially a state-based generalization of page objects, referred to here as state objects.


Comments


Rudolf Olah

Very neat use of state machines and diagrams; it's great to see someone modeling the ideas before jumping straight into code. It's a pleasant surprise that there's so few lines of end2end testing code:

> The application's end-to-end test suite uses state objects. It consists of about 25 state objects and 75 scenarios. Like the PhoneCat test suite, it uses Protractor and consists of about 1,750 lines of JavaScript.

In a production environment covering even a few scenarios can reduce regressions and the amount of bugs.


Displaying 1 comment

Log in to Read the Full Article

Sign In

Sign in using your ACM Web Account username and password to access premium content if you are an ACM member, Communications subscriber or Digital Library subscriber.

Need Access?

Please select one of the options below for access to premium content and features.

Create a Web Account

If you are already an ACM member, Communications subscriber, or Digital Library subscriber, please set up a web account to access premium content on this site.

Join the ACM

Become a member to take full advantage of ACM's outstanding computing information resources, networking opportunities, and other benefits.
  

Subscribe to Communications of the ACM Magazine

Get full access to 50+ years of CACM content and receive the print version of the magazine monthly.

Purchase the Article

Non-members can purchase this article or a copy of the magazine in which it appears.