The following applies to Play 2.4 projects for Scala 2.11. When setting up a Play2 Scala project, two test case files are created automatically: test/ApplicationSpec.scala and test/IntegrationSpec.scala. The testcases therein are based on specs2. If you prefer to write your test cases using ScalaTest (I certainly do), then you need to proceed as follow: Change the libraryDependencies in file build.sbt from: libraryDependencies ++= Seq( jdbc, cache, ws, specs2 % Test )