public void TestMoveLeft() { var s = new QRect(); s.X = 50; s.Y = 100; s.Width = 500; s.Height = 600; s.MoveLeft(50); Assert.AreEqual(500, s.Width); Assert.AreEqual(600, s.Height); Assert.AreEqual(50, s.X); Assert.AreEqual(100, s.Y); }