c2 = new ColumnArrangement(
            HorizontalAlignment.RIGHT, VerticalAlignment.BOTTOM, 1.0, 2.0
        );
        assertTrue(c1.equals(c2));
    
        c1 = new ColumnArrangement(
            HorizontalAlignment.RIGHT, VerticalAlignment.BOTTOM, 1.1, 2.0
        );
        assertFalse(c1.equals(c2));