Rule matchedRule = ruleManager.getRule(responseData);

        assertNull(matchedRule);
    }

    /**
     * Test getRule with null ResponseData
     */
    public void test_getRule_nullResponseData() {
        TestRule rule = new TestRule("rule1", true);

        ruleManager.addRule(rule);

        Rule matchedRule = ruleManager.getRule(null);

        assertNull(matchedRule);
    }

        assertEquals(readings, elevateWord.getReadings());
        assertEquals(fields, elevateWord.getFields());
        assertEquals(tags, elevateWord.getTags());
        assertNotNull(elevateWord.getRoles());
        assertTrue(elevateWord.getRoles().isEmpty());
    }

    @Test
    public void testConstructorWithNullTagsAndRoles() {
        // Test constructor with both null tags and roles
        String word = "test word";

        }
        mergedItem.languages = langList.toArray(new String[langList.size()]);

        final List<String> roleList = new ArrayList<>(item1.getRoles().length + item2.getRoles().length);
        Collections.addAll(roleList, item1.getRoles());
        for (final String role : item2.getRoles()) {
            if (!roleList.contains(role)) {
                roleList.add(role);
            }
        }

        assertNotNull(item.getFields());
        assertEquals(0, item.getFields().length);
        assertNotNull(item.getTags());
        assertEquals(0, item.getTags().length);
        assertNotNull(item.getRoles());
        assertEquals(1, item.getRoles().length); // Default role is added
        assertNotNull(item.getLanguages());
        assertEquals(0, item.getLanguages().length);
        assertNotNull(item.getKinds());

        } catch (final Exception e) {
            throw new ExtractException("Failed to extract data.", e);
        } finally {
            if (dfos != null && !dfos.isInMemory()) {
                final File file = dfos.getFile();
                try {
                    Files.delete(file.toPath());
                } catch (final IOException e) {
                    logger.warn("Failed to delete {}.", file.getAbsolutePath(), e);

        if (dfos.isInMemory()) {
            return new ByteArrayInputStream(dfos.getData());
        }
        return new BufferedInputStream(new FileInputStream(dfos.getFile()));
    }

    /**
     * Returns a content from a writer.
     *
     * @param out A content writer.
     * @param encoding An encoding.
     * @param normalizeText If true, normalize a text.

     * Test RuleManager implementation
     */
    public static class TestRuleManager implements RuleManager {
        private final List<Rule> rules = new ArrayList<>();

        @Override
        public Rule getRule(ResponseData responseData) {
            for (Rule rule : rules) {
                if (rule != null && rule.match(responseData)) {
                    return rule;
                }
            }

                    if (annotation instanceof final PDAnnotationFileAttachment annotationFileAttachment) {
                        final PDFileSpecification fileSpec = annotationFileAttachment.getFile();
                        if (fileSpec instanceof final PDComplexFileSpecification complexFileSpec) {
                            final PDEmbeddedFile embeddedFile = getEmbeddedFile(complexFileSpec);

        secondLine.put("score", (item.getQueryFreq() + item.getDocFreq()) * item.getUserBoost());
        secondLine.put("tags", item.getTags());
        secondLine.put("roles", item.getRoles());
        secondLine.put("kinds", Arrays.toString(item.getKinds()));
        secondLine.put("@timestamp", item.getTimestamp());

     */
    protected void processResponse(final UrlQueue<?> urlQueue, final ResponseData responseData) {
        // get a rule
        final Rule rule = crawlerContext.ruleManager.getRule(responseData);
        if (rule == null) {
            log(logHelper, LogType.NO_RULE, crawlerContext, urlQueue, responseData);
        } else {
            responseData.setRuleId(rule.getRuleId());