public void SlideThumbTest() { var slider = GetSlider(); var thumb = slider.Thumb; var oldPos = thumb.Properties.BoundingRectangle.Value.Center(); thumb.SlideHorizontally(50); UtilityMethods.AssertPointsAreSame(thumb.Properties.BoundingRectangle.Value.Center(), new Point(oldPos.X + 50, oldPos.Y), 1); }