assertEquals("{labels.index_num}", FessLabels.LABELS_index_num);

        // Test error related labels
        assertEquals("{labels.error_title}", FessLabels.LABELS_error_title);
        assertEquals("{labels.system_error_title}", FessLabels.LABELS_system_error_title);
        assertEquals("{labels.contact_site_admin}", FessLabels.LABELS_contact_site_admin);
        assertEquals("{labels.request_error_title}", FessLabels.LABELS_request_error_title);