Play offers multiple integrations with testing frameworks. There is support for JUnit, Scalatest, Specs2, Selenium, and there are also many testing helpers to easily write tests when using these frameworks.
Use this category to ask any question related to writing automated tests.
Remember to be clear when asking questions. If you have a stack trace, post it and if you have a small code snippet to reproduce the problem or that better explains your question, post it too.