Map.of("_default", List.of("QUERY1 QUERY2")), //
                Set.of("QUERY1", "QUERY2"), //
                buildQuery("\"QUERY1 QUERY2\""));
        assertQueryContext(buildQuery("\"QUERY1 QUERY2\"").getQueryBuilder().toString().replaceAll("\\s", ""),
                buildQuery("aaa:\"QUERY1 QUERY2\""));

        assertQueryContext(

 * These tests focus on the buildQuery, buildFilterQuery, and buildFunctionScoreQuery methods.
 */
public class SuggestRequestQueryBuildingTest {

    private TestableSuggestRequest request;

    @Before
    public void setUp() {
        request = new TestableSuggestRequest();
    }

    // ============================================================
    // Tests for buildQuery method

     * @return The QueryBuilder instance.
     * @deprecated Use {@link SuggestQueryBuilder#buildQuery(String, List)} instead.
     */
    @Deprecated
    protected QueryBuilder buildQuery(final String q, final List<String> fieldList) {
        return new SuggestQueryBuilder(readingConverter, normalizer, languages, prefixMatchWeight).buildQuery(q, fieldList);
    }

    /**
     * Builds a filter query.

        final SearchRequestBuilder builder = client.prepareSearch(index);
        builder.setSize(size);
        builder.setQuery(buildQuery());
        builder.setRescorer(buildRescore(), windowSize);

        builder.execute(new ActionListener<SearchResponse>() {
            @Override

    }

    /**
     * Builds the query for suggestions.
     * @param q The query string.
     * @param fields The fields to search in.
     * @return The QueryBuilder instance.
     */
    public QueryBuilder buildQuery(final String q, final List<String> fields) {
        try {
            final QueryBuilder queryBuilder;
            if (Strings.isNullOrEmpty(q)) {
                queryBuilder = QueryBuilders.matchAllQuery();

         * @param field The field name.
         * @param text The query text.
         * @param boost The boost value.
         * @return The created query builder.
         */
        QueryBuilder buildQuery(String field, String text, float boost);
    }

    /**
     * Template method that handles the common pattern of query conversion:
     * 1. Check if field is DEFAULT_FIELD and apply default query builder

     * Builds a query for boosting documents based on the keyword list.
     *
     * @param keywordList The list of keywords.
     * @param list The list of filter function builders to add to.
     */
    public void buildQuery(final List<String> keywordList, final List<FilterFunctionBuilder> list) {
        final String key = ComponentUtil.getVirtualHostHelper().getVirtualHostKey();
        keywordList.stream().forEach(keyword -> {

            list.add(new FilterFunctionBuilder(
                    ScoreFunctionBuilders.fieldValueFactorFunction(ComponentUtil.getFessConfig().getIndexFieldBoost())));
            ComponentUtil.getKeyMatchHelper().buildQuery(queryContext.getDefaultKeyword(), list);
            list.addAll(boostFunctionList);
        });
    }

    /**
     * Builds the base query from the user's search string using the configured query parser.

        try {
            List<String> keywordList = Collections.emptyList();
            List<FilterFunctionBuilder> functionBuilders = new ArrayList<>();

            try {
                keyMatchHelper.buildQuery(keywordList, functionBuilders);
            } catch (Exception e) {
                // Expected due to missing dependencies in test environment
                assertTrue(true);
                return;
            }

        request.addField("field1");
        request.addLanguage("ja");
        request.addExcludeWord("exclude");
        request.setQueryFreqThreshold(5);

        assertNotNull(request.buildQuery());
    }

    @Test
    public void test_buildRescore() throws Exception {
        PopularWordsRequest request = new PopularWordsRequest();
        request.setSeed("test-seed");