@Test
 public void testSize() {
   CanvasContext ctx = new CanvasContext();
   ctx.size(200, 300);
   assertEquals(200.0, ctx.getWIDTH());
   assertEquals(300.0, ctx.getHeight());
   assertEquals(200.0, ctx.getCanvas().getWidth());
   assertEquals(300.0, ctx.getCanvas().getHeight());
 }