}

    /**
     * Purges old suggest data from search logs.
     *
     * @param time The timestamp to purge data before.
     */
    public void purgeSearchlogSuggest(final LocalDateTime time) {
        final BoolQueryBuilder boolQueryBuilder = QueryBuilders.boolQuery();
        boolQueryBuilder

            suggestHelper.purgeDocumentSuggest(time);
            final long cleanupDay = ComponentUtil.getFessConfig().getPurgeSuggestSearchLogDay();
            if (cleanupDay > 0) {
                suggestHelper.purgeSearchlogSuggest(time.minusDays(cleanupDay));
            }
            return 0;
        } catch (final Exception e) {
            logger.warn("Failed to purge suggest data.", e);
            return 1;
        }
    }

        }
    }

    @Test
    public void test_purgeSearchlogSuggest() {
        LocalDateTime time = LocalDateTime.now().minusDays(1);
        try {
            suggestHelper.purgeSearchlogSuggest(time);
            assertTrue(true);
        } catch (Exception e) {
            assertTrue(true);
        }
    }

    @Test
    public void test_getAllWordsNum() {
        try {