More concise syntax to use org.scalatest.mockito.MockitoSugar.mock:
Make your spec extend MockitoSugarRush trait
When having
val service = mock[Service]
instead of
when(service.method()).thenReturn(stubbedValue)
use
service.method returns stubbedValue
libraryDependencies += "com.github.bolthelmet" %% "mockito-sugar-rush" % "1.3.0" % Test
import org.scalatest.{FreeSpec, Matchers}
class MockitoSugarRushSpec extends FreeSpec with MockitoSugarRush with Matchers{
  val okayNumber = 4
  val theNumberOfTheBeast = 666
  "return should" - {
    "setup mocks" in {
      val service = mock[FooService]
      service.bar returns theNumberOfTheBeast
      service.bar shouldBe theNumberOfTheBeast
    }
  }
  class FooService {
    def bar = okayNumber
  }
}