BorderArrangement b1 = new BorderArrangement();
BorderArrangement b2 = new BorderArrangement();
assertTrue(b1.equals(b2));
assertTrue(b2.equals(b1));
b1.add(new EmptyBlock(99.0, 99.0), null);
assertFalse(b1.equals(b2));
b2.add(new EmptyBlock(99.0, 99.0), null);
assertTrue(b1.equals(b2));
b1.add(new EmptyBlock(1.0, 1.0), RectangleEdge.LEFT);
assertFalse(b1.equals(b2));
b2.add(new EmptyBlock(1.0, 1.0), RectangleEdge.LEFT);
assertTrue(b1.equals(b2));
b1.add(new EmptyBlock(2.0, 2.0), RectangleEdge.RIGHT);
assertFalse(b1.equals(b2));
b2.add(new EmptyBlock(2.0, 2.0), RectangleEdge.RIGHT);
assertTrue(b1.equals(b2));
b1.add(new EmptyBlock(3.0, 3.0), RectangleEdge.TOP);
assertFalse(b1.equals(b2));
b2.add(new EmptyBlock(3.0, 3.0), RectangleEdge.TOP);
assertTrue(b1.equals(b2));
b1.add(new EmptyBlock(4.0, 4.0), RectangleEdge.BOTTOM);
assertFalse(b1.equals(b2));
b2.add(new EmptyBlock(4.0, 4.0), RectangleEdge.BOTTOM);
assertTrue(b1.equals(b2));
}