public void TestLockAspectRatio()
        {
            PowerPoint.ShapeRange shapes = GetShapes(SlideNo.AnchorOrigin, _shapeNames);

            _resizeLab.ChangeShapesAspectRatio(shapes, true);

            foreach (PowerPoint.Shape shape in shapes)
            {
                Assert.AreEqual(shape.LockAspectRatio, MsoTriState.msoTrue);
            }
        }