assertEquals("1,000", FessFunctions.formatNumber(1000, "###,###"));
        assertEquals("1,000,000", FessFunctions.formatNumber(1000000, "###,###"));
    }

    public void test_formatFileSize() {
        assertEquals("0", FessFunctions.formatFileSize(0));
        assertEquals("1000", FessFunctions.formatFileSize(1000));
        assertEquals("976.6K", FessFunctions.formatFileSize(1000000));