public void testRactanglesAreCached() throws Exception {
Box rectangle = panel.getBoundingBox();
Box insideMargins = panel.getBoxInsideMargins();
Box insideBorders = panel.getBoxInsideBorders();
Box insidePadding = panel.getBoxInsidePadding();
assertSame(rectangle, panel.getBoundingBox());
assertSame(insideMargins, panel.getBoxInsideMargins());
assertSame(insideBorders, panel.getBoxInsideBorders());
assertSame(insidePadding, panel.getBoxInsidePadding());
panel.setSize(123, 456);
assertNotSame(rectangle, panel.getBoundingBox());
assertNotSame(insideMargins, panel.getBoxInsideMargins());
assertNotSame(insideBorders, panel.getBoxInsideBorders());
assertNotSame(insidePadding, panel.getBoxInsidePadding());
}
