public void testEquals() {

        StandardCategoryItemLabelGenerator g1
                = new StandardCategoryItemLabelGenerator();
        StandardCategoryItemLabelGenerator g2
                = new StandardCategoryItemLabelGenerator();
        assertTrue(g1.equals(g2));
        assertTrue(g2.equals(g1));

        g1 = new StandardCategoryItemLabelGenerator("{0}",
                new DecimalFormat("0.000"));
        assertFalse(g1.equals(g2));
        g2 = new StandardCategoryItemLabelGenerator("{0}",
                new DecimalFormat("0.000"));
        assertTrue(g1.equals(g2));

        g1 = new StandardCategoryItemLabelGenerator("{1}",
                new DecimalFormat("0.000"));
        assertFalse(g1.equals(g2));
        g2 = new StandardCategoryItemLabelGenerator("{1}",
                new DecimalFormat("0.000"));
        assertTrue(g1.equals(g2));

        g1 = new StandardCategoryItemLabelGenerator("{2}",
                new SimpleDateFormat("d-MMM"));
        assertFalse(g1.equals(g2));
        g2 = new StandardCategoryItemLabelGenerator("{2}",
                new SimpleDateFormat("d-MMM"));
        assertTrue(g1.equals(g2));