It took a 2 weeks, On first week there was a aptitude test which consists of 10 questions without options and the duration is one hour. After that the second round is e-mail writing which is you have to write an e-mail based on the given task. Then the third round is test case written round, in which you have to write test cases based on the scenario the give to you. It's duration is also one hour. This all happened on one day, after finished third round they said we will call you once you get short listed, I got a call from them after ten days. I went and attend fourth round, which is a technical round, in which they asked some technical questions and your project details etc.. If you are fully prepare this you can easily crack your interview..