In (enterprise) development testing often is treated very much as poor relations. But for more than "Hello World" applications testing is not just nice to have (at the end of the project) rather than crucial for working software. This session shows how Java EE application are tested in a productive yet comprehensive way, why it is indispensable to do system tests and why are integration test frameworks like Arquillian overrated for most of the use cases. Most of the time will be spent live-coding and of course live-testing.