}
        if (!fields.isEmpty()) {
            queryBuilder.must(QueryBuilders.termsQuery(FieldNames.FIELDS, fields));
        }
        if (!languages.isEmpty()) {
            queryBuilder.must(QueryBuilders.termsQuery(FieldNames.LANGUAGES, languages));
        }
        if (!excludeWords.isEmpty()) {
            queryBuilder.mustNot(QueryBuilders.termsQuery(FieldNames.TEXT, excludeWords));

            boolean isGroupRecordStarted = false;
            while ((line = reader.readLine()) != null) {
                line = stripComment(line).trim();
                if (StringUtil.isEmpty(line)) {
                    continue;
                }

                String value = getValue(USER_AGENT_RECORD, line);
                if (value != null) {
                    if (isGroupRecordStarted) {

        assertTrue(tokens.isEmpty());
    }

    @Test
    public void testAnalyzeWithNullText() {
        // Test analyze with null text
        String text = null;
        String field = "content";
        String lang = "en";

        List<AnalyzeToken> tokens = analyzer.analyze(text, field, lang);

        assertNotNull(tokens);
        assertTrue(tokens.isEmpty());
    }

    @Test

        String text = "";
        String field = "content";

        List<String> readings = converter.convert(text, field, "en");

        assertNotNull(readings);
        assertTrue(readings.isEmpty());
    }

    @Test
    public void testConvertWithNullText() throws IOException {
        // Test convert with null text
        converter.init();
        String text = null;

                if (urlQueueList.isEmpty()) {
                    return null;
                }
                if (logger.isDebugEnabled()) {
                    logger.debug("Queued URL: {}", urlQueueList);
                }

                if (!urlQueueList.isEmpty()) {
                    try {
                        // delete from es

        for (CrawlerStatus status : CrawlerStatus.values()) {
            String description = getStatusDescription(status);
            assertNotNull(description);
            assertFalse(description.isEmpty());
        }
    }

    /**
     * Helper method to test switch statement
     */
    private String getStatusDescription(CrawlerStatus status) {
        switch (status) {
        case INITIALIZING:

    }

    @Override
    public String getContentType(final InputStream is, final Map<String, String> params) {
        final String filename = params.get(ExtractData.RESOURCE_NAME_KEY);
        if (StringUtil.isEmpty(filename) && is == null) {
            throw new MimeTypeException("The filename and input stream is empty.");
        }

        final Metadata metadata = new Metadata();

                }
            });
        }

        startLatch.countDown();
        endLatch.await(10, TimeUnit.SECONDS);
        executor.shutdown();

        assertTrue(exceptions.isEmpty());
        // Final name should be from one of the threads
        assertNotNull(testTransformer.getName());
        assertTrue(testTransformer.getName().startsWith("thread"));
    }

    /**

        }

        // Wait for all threads
        for (Thread thread : threads) {
            thread.join();
        }

        // Verify results
        assertTrue(exceptions.isEmpty());
        assertEquals(threadCount / 2 * matchesPerThread, matchCount.get());
        assertEquals(threadCount / 2 * matchesPerThread, noMatchCount.get());
    }

    /**

            }
            final List<AliasMetadata> list = response.getAliases().get(s);
            if (list == null) {
                return true;
            }
            return list.isEmpty();
        }).forEach(s -> {
            if (logger.isInfoEnabled()) {
                logger.info("Delete index: {}", s);
            }