public void ValueChangedEventSetsCameraPositionAndDrawsSlider() { var cameraSliders = new CameraSlidersMock(renderer); cameraSliders.CreateSliders(); cameraSliders.Show(); int sliderValue = -1; cameraSliders.horizontalSlider.ValueChanged += value => sliderValue = value; AdvanceTimeAndUpdateEntities(); Assert.AreEqual(cameraSliders.horizontalSlider.Value, sliderValue); }