public void TimeButtonPressedAndMicrowaveStarted_IsInPowerState_TurnsOnForAMinute()
        {
            //ARRANGE
            powerButton.Press();

            //Boilerplate to force a wait until ShowTime is called
            AutoResetEvent reset = new AutoResetEvent(false);

            powerTubeSubstitute
            .When(d => d.TurnOff())
            .Do(c =>
            {
                reset.Set();
            });


            //ACT
            timeButton.Press();
            startCancelButton.Press();

            //ASSERT
            //We want to fail if power isn't turned off after a minute!
            Assert.That(reset.WaitOne(61000), Is.True);
        }