new DefaultPoint(50, 50),
new DefaultPoint(60, 100),
new DefaultPoint(100, 110),
new DefaultPoint(120, 60)
);
shapes.common.Location b = s.accept(v);
shapes.common.Rectangle r = (shapes.common.Rectangle) b.getChild();
assertEquals(50, b.getX());
assertEquals(50, b.getY());
assertEquals(70, r.getWidth());
assertEquals(60, r.getHeight());