Class:

/** (Playframework 2.2 extension for use with Specs2)
 * Used to run specs within the context of a running application.
 *
 * @param app The fake application
 */
abstract class WithApplication(val app: FakeApplication = FakeApplication()) extends Around with Scope {
  implicit def implicitApp = app
  override def around[T: AsResult](t: => T): Result = {
    Helpers.running(app)(AsResult.effectively(t))
  }
}

Use:

"tests something" in new WithApplication() {
  //the test here
}

Question:

Why isn't the test code between the braces executed immediately on instantiation?  (It seems like it would be part of the constructor or something.)   How is it assigned to a variable and executed in around. (Or is this even the right understanding of what happens?)