Quality is important. People love a high-quality application. So, how can we achieve it? Spotify wants to release an application faster. We have a one-week release cycle. Every day, hundreds of engineers are working on the same code base. We believe that test automation is one of the key factors to keep a high quality in a sustainable way. Test automation has three levels: unit test, integration test, and UI test. In this talk, we will present how Spotify has evolved test automation for Mobile. Especially, we're going to talk on integration and UI test level including our internal systems.