return 1L;
            }
        };

        // Create mock FessConfig
        fessConfig = new TestFessConfig() {
            @Override
            public String getIndexFieldExpires() {
                return expiresFieldName;
            }

            @Override
            public String getIndexDocumentUpdateIndex() {
                return documentUpdateIndex;
            }

            public String getIndexFieldAnchor() {
                return baseConfig.getIndexFieldAnchor();
            }

            @Override
            public String getIndexFieldExpires() {
                return baseConfig.getIndexFieldExpires();
            }

            @Override
            public String getIndexFieldParentId() {
                return baseConfig.getIndexFieldParentId();
            }

            }

            @Override
            public String getIndexFieldSegment() {
                return "segment";
            }

            @Override
            public String getIndexFieldExpires() {
                return "expires";
            }

            @Override
            public String getIndexDocumentUpdateIndex() {
                return "fess.search";
            }
        });

            }

            @Override
            public String getIndexFieldSegment() {
                return "segment";
            }

            @Override
            public String getIndexFieldExpires() {
                return "expires";
            }

            @Override
            public String getIndexFieldParentId() {
                return "parent_id";
            }

            }

            @Override
            public String getResponseFieldUrlLink() {
                return "url_link";
            }

            @Override
            public String getIndexFieldExpires() {
                return "expires";
            }

            @Override
            public String getIndexFieldParentId() {
                return "parent_id";
            }

            }

            @Override
            public String getResponseFieldUrlLink() {
                return "url_link";
            }

            @Override
            public String getIndexFieldExpires() {
                return "expires";
            }

            @Override
            public String getIndexFieldParentId() {
                return "parent_id";
            }

        final StringBuilder resultBuf = new StringBuilder();

        // clean up
        final QueryBuilder queryBuilder = QueryBuilders.rangeQuery(fessConfig.getIndexFieldExpires()).to("now");
        try {
            searchEngineClient.deleteByQuery(fessConfig.getIndexDocumentUpdateIndex(), queryBuilder);

        } catch (final Exception e) {

                    if (documentExpires != null
                            && !indexingHelper.updateDocument(searchEngineClient, id, fessConfig.getIndexFieldExpires(), documentExpires)) {
                        logger.debug("Failed to update field: field={}, url={}", fessConfig.getIndexFieldExpires(), url);
                    }

                    return false;
                }
            } finally {

        assertEquals("config_id", fessConfig.getIndexFieldConfigId());
    }

    @Test
    public void test_indexFieldExpires() {
        assertEquals("expires", fessConfig.getIndexFieldExpires());
    }

    @Test
    public void test_indexFieldUrl() {
        assertEquals("url", fessConfig.getIndexFieldUrl());
    }

    @Test
    public void test_indexFieldDocId() {

                final QueryBuilder expiresCheckQuery = QueryBuilders.boolQuery()//
                        .mustNot(QueryBuilders.rangeQuery(fessConfig.getIndexFieldExpires()).gt("now"))//
                        .mustNot(QueryBuilders.existsQuery(fessConfig.getIndexFieldExpires()));
                queryBuilder.must(expiresCheckQuery);
            }

            try {