Friday, October 17, 2008

Test Engineering at Google

By Roshan Sembacuttiaratchy, Software Engineer in Test, Google Zurich, Switzerland

When I tell people that I'm a Test Engineer at Google, I get a confused look from them and questions as to what I actually do. Do I sit in front of a keyboard clicking every button and link on screen? Do I watch over the infinite number of monkeys, checking to make sure they produce Shakespeare's work while clicking said links? Or do we create better and smarter pigeons? Well, it's actually a bit of everything, but not quite in the way you might think at first.

The people working in Test Engineering are software developers with a passion for testing and test automation. Whereas most software engineers at Google are working on developing products, Test Engineering's objective is to help improve the quality of the projects we're involved in. We work integrated with the project team, developing test frameworks and setting up test systems. One of our key mantras is automation, so our first task whenever we're assigned to a new project is to evaluate the current state of test automation, identify what we could do to improve the results obtained, reduce the total run time, and make the best use of available resources. Load and performance testing is another important task we perform, along with analysis of the results. We're also not afraid to get our hands dirty by diving deep into the project's code to identify what re-factoring might be useful to help test the system better, creating and introducing stubs, fakes and mocks as necessary. As you might guess, we're big fans of Test Driven Design, Continuous Integration and other agile techniques and play the role of evangelists, spreading the word on new tools, techniques and best practices.

Individual project assignments tend to be limited in duration, as we're a relatively small group of people in Test Engineering, helping support a much larger group of software developers. So once we've completed our tasks for one project, we move on to the next, working with a different team of people and a different set of problems, changing projects every few months.

That pretty much describes what I do, and how our team in Zurich works. So to answer the questions posed initially, I write software which performs the task of clicking every button and every link, and which then verifies the result of these actions. I run this on a few hundred machines to mimic virtual monkeys, and hand it over to the development team so that they can use it to check that their product is working, even after I've left their project. And if it produces the works of Shakespeare, that's just an added bonus! :-)

1 comment:

Anonymous said...

Great Post!, You described how you interact with developers, but how do you interact with the other software testing team? Is it seperated by testing phase or are you the only ones that do all the work.