assertEquals(2, tokensNull.size());
    }

    @Test
    public void testAnalyzeWithDifferentFields() {
        // Test analyze with different field settings
        String text = "test content";
        String lang = "en";

        // Test with different field names
        List<AnalyzeToken> tokensContent = analyzer.analyze(text, "content", lang);
        assertNotNull(tokensContent);

     */
    public void test_processUrl_basic() {
        String sessionId = "test-session-012";
        urlFilter.init(sessionId);

        // Process URL should handle different URL formats
        urlFilter.processUrl("https://example.com/");
        urlFilter.processUrl("http://test.com/path/to/page");
        urlFilter.processUrl("ftp://files.server.com/documents/");

        // Test that merge throws exception for different IDs
        String[] text1 = { "item1" };
        String[][] readings1 = { { "read1" } };
        SuggestItem item1 = new SuggestItem(text1, readings1, null, 0L, 0L, 1.0f, null, null, null, SuggestItem.Kind.QUERY);

        String[] text2 = { "item2" }; // Different text -> different ID
        String[][] readings2 = { { "read2" } };

import org.codelibs.fess.crawler.interval.IntervalController;

/**
 * An abstract base class for implementing {@link IntervalController}.
 * Provides a common structure for handling delays at different stages of the crawling process.
 * It encapsulates the delay logic and exception handling, allowing subclasses to focus on
 * defining the specific delay behavior for each stage.
 *
 * <p>

        TestAbstractRule testRule = new TestAbstractRule();

        ResponseData responseData = new ResponseData();
        responseData.setUrl("http://example.com");

        // Different implementations should behave differently
        conditionalRule.setUrlPattern("https://.*");
        assertFalse(conditionalRule.match(responseData)); // Doesn't match pattern

        testRule.setMatchResult(true);

 * It interacts with the OpenSearch client to create, update, and delete analyzer settings, as well as to retrieve
 * analyzer names and mappings.
 *
 * <p>Key functionalities include:</p>
 * <ul>
 *   <li>Initializing analyzer settings and mappings.</li>
 *   <li>Retrieving analyzer names for different fields and languages.</li>

 * Implementation of the {@link LogHelper} interface.
 * This class provides methods for logging various events during the crawling process.
 * It uses Log4j2 for logging.
 *
 * <p>
 * The class contains methods for logging different types of events, such as:
 * </p>
 * <ul>
 *   <li>Starting and finishing threads</li>
 *   <li>Starting and cleaning up crawling</li>
 *   <li>Handling unsupported URLs</li>
 *   <li>Checking last modified dates</li>

            lastResponseData = null;
            returnedResultData = null;
            throwException = false;
        }
    }

    /**
     * Another concrete implementation for testing different scenarios
     */
    public static class NameTrackingTransformer extends AbstractTransformer {
        private final List<String> nameHistory = new ArrayList<>();

        @Override

import org.codelibs.fess.crawler.entity.ResponseData;

/**
 * RegexRule is a rule implementation that uses regular expressions to match against the ResponseData.
 * It allows defining multiple regular expressions for different fields of the ResponseData.
 * The rule can be configured to require all regular expressions to match (allRequired = true) or
 * only one of them (allRequired = false). It also supports a default rule that always matches.
 *

        assertSame(sharedProcessor, rule3.getResponseProcessor());

        // Different rule IDs
        assertEquals("rule1", rule1.getRuleId());
        assertEquals("rule2", rule2.getRuleId());
        assertEquals("rule3", rule3.getRuleId());

        // Different match results
        ResponseData responseData = new ResponseData();
        assertTrue(rule1.match(responseData));