So far, we have parallelized our tests so that we can run multiple browser instances at the same time. However, we are still using only one type of driver, the good
old FirefoxDriver. I mentioned problems with Internet Explorer in the previous section, but right now we have no obvious way to run our tests using Internet Explorer. Let's have a look at how we can x this.

To start off with, we will need to create a new Maven property called browser
and a new con guration setting inside our failsafe plugin con guration called systemPropertyVariables. This is pretty much what is says on the tin; everything de ned inside systemPropertyValues will become a system property, which will be available to your Selenium tests. We are going to use a Maven variable to reference a Maven property so that we can dynamically change this value on the command line.