example of a test in scala

scala-test-example.scala

// taken from: http://www.scalatest.org/user_guide/selecting_a_style
class TVSetSpec extends FeatureSpec with GivenWhenThen {

  info("As a TV set owner")
  info("I want to be able to turn the TV on and off")
  info("So I can watch TV when I want")
  info("And save energy when I'm not watching TV")

  feature("TV power button") {
    scenario("User presses power button when TV is off") {

      Given("a TV set that is switched off")
      val tv = new TVSet
      assert(!tv.isOn)

      When("the power button is pressed")
      tv.pressPowerButton()

      Then("the TV should switch on")
      assert(tv.isOn)
    }

    scenario("User presses power button when TV is on") {

      Given("a TV set that is switched on")
      val tv = new TVSet
      tv.pressPowerButton()
      assert(tv.isOn)

      When("the power button is pressed")
      tv.pressPowerButton()

      Then("the TV should switch off")
      assert(!tv.isOn)
    }
  }
}