// ============================================================

    @Test
    public void test_parseQueryLog_emptyQueryString() throws Exception {
        QueryLog queryLog = new QueryLog("", null);
        List<SuggestItem> items =
                parser.parseQueryLog(queryLog, supportedFields, tagFieldNames, roleFieldName, defaultReadingConverter, defaultNormalizer);

        assertEquals("Empty query should return empty list", 0, items.size());

        suggester.createIndexIfNothing();
    }

    @Test
    public void test_parseQueryLog() throws Exception {

        QueryLog queryLog = new QueryLog("content:検索エンジン", null);
        List<SuggestItem> items = defaultContentsParser.parseQueryLog(queryLog, supportedFields, tagFieldNames, roleFieldName,
                createDefaultReadingConverter(), createDefaultNormalizer());
        SuggestItem item = items.get(0);

     *
     * @param ctx The content indexing context
     * @param queryLog The query log to index
     * @return The SuggestIndexResponse
     */
    public SuggestIndexResponse indexFromQueryLog(final ContentIndexingContext ctx, final QueryLog queryLog) {
        return indexFromQueryLog(ctx, new QueryLog[] { queryLog });
    }

    /**
     * Indexes a single query log.
     *

        // Create a query log with potentially problematic syntax
        QueryLog queryLog = new QueryLog(field + ":", null);

        try {
            SuggestIndexResponse response = suggester.indexer().indexFromQueryLog(queryLog);
            // May succeed with empty result or fail depending on implementation
            assertNotNull(response);

        String field = settings.array().get(SuggestSettings.DefaultKeys.SUPPORTED_FIELDS)[0];

        QueryLog[] queryLogs = new QueryLog[3];
        queryLogs[0] = new QueryLog(field + ":検索", null);
        queryLogs[1] = new QueryLog(field + ":fess", null);
        queryLogs[2] = new QueryLog(field + ":エンジン", null);

        SuggestIndexResponse response = suggester.indexer().indexFromQueryLog(queryLogs);

    }

    /**
     * Indexes a single query log.
     * @param queryLog The query log to index.
     * @return The SuggestIndexResponse.
     */
    public SuggestIndexResponse indexFromQueryLog(final QueryLog queryLog) {
        ensureOperations();
        return contentOps.indexFromQueryLog(createContext(), queryLog);
    }

    /**
     * Indexes multiple query logs.

    }

    @Override
    public List<SuggestItem> parseQueryLog(final QueryLog queryLog, final String[] fields, final String[] tagFieldNames,
            final String roleFieldName, final ReadingConverter readingConverter, final Normalizer normalizer) {
        final String queryString = queryLog.getQueryString();
        final String filterQueryString = queryLog.getFilterQueryString();

import org.codelibs.fess.suggest.index.SuggestIndexResponse;
import org.codelibs.fess.suggest.index.contents.document.ESSourceReader;
import org.codelibs.fess.suggest.index.contents.querylog.QueryLog;
import org.codelibs.fess.suggest.index.contents.querylog.QueryLogReader;
import org.codelibs.fess.suggest.request.popularwords.PopularWordsResponse;
import org.codelibs.fess.suggest.request.suggest.SuggestResponse;