Selenium Grid – what’s that?
If you are familiar with Selenium test tool, you probably know that when running tests, you can run only one test case at a time. Lets say we have 10 test cases and running each takes about 10 minutes. In that case, running all test cases will take 100 minutes. Now, the question is how to speed it up? How to make it faster?
One of the solution is to run test cases in parallel. And that’s exactly what Selenium Grid is for. It allows to setup few remote boxes and run test cases on all boxes simultaneously at the same time.
There are two main parts of Selenium Grid: hub and remote control. You will run most probably one single hub and multiple remote controllers. Remote controllers are responsible for executing particular test cases using the browser like in regular Selenium. Hub is responsible for distributing test cases between remote controllers and collecting results.
Going back to our example. Lets use 10 remote controllers and lets run our 10 test cases. With such setup, running all test cases will take only 10 minutes (from 100 minutes) which is a huge improvement.
More info about Selenium Grid here : http://selenium-grid.seleniumhq.org/
