// Mock implementation
                }
            };
            ComponentUtil.register(mockProperties, "systemProperties");

            // Register mock system helper
            SystemHelper mockSystemHelper = new SystemHelper() {
                @Override
                public void updateSystemProperties() {
                    // Mock implementation
                }

 * test with reference to the same "lock-like object", and then their interactions with that object
 * are choreographed via the various methods on this class.
 *
 * <p>A "lock-like object" is really any object that may be used for concurrency control. If the
 * {@link #callAndAssertBlocks} method is ever called in a test, the lock-like object must have a

    private Postbox postbox;

    @Override
    public void setUp() throws Exception {
        super.setUp();
        crawler = new Crawler();

        // Initialize mock components
        searchEngineClient = new SearchEngineClient() {
            // Mock implementation
        };
        crawler.searchEngineClient = searchEngineClient;

        webFsIndexHelper = new WebFsIndexHelper() {
            @Override

@NullMarked
public class TestLogHandler extends Handler {
  private final Object lock = new Object();

  /** We will keep a private list of all logged records */
  @GuardedBy("lock")
  private final List<LogRecord> list = new ArrayList<>();

  /** Adds the most recently logged record to our list. */
  @Override
  public void publish(@Nullable LogRecord record) {
    synchronized (lock) {
      if (record != null) {
        list.add(record);
      }

        deleteByQueryCalled = false;
        deleteIndex = null;
        deleteQuery = null;
        expiresFieldName = "expires";
        documentUpdateIndex = "fess.update";

        // Create mock SearchEngineClient
        searchEngineClient = new SearchEngineClient() {
            @Override
            public long deleteByQuery(String index, QueryBuilder query) {
                deleteByQueryCalled = true;

    public void test_findBusinessLocale_withValidLocale() {
        // Setup mock config
        FessConfig mockConfig = new FessConfig.SimpleImpl() {
            @Override
            public String getQueryBrowserLangParameterName() {
                return "lang";
            }
        };
        ComponentUtil.setFessConfig(mockConfig);

        // Setup mock request manager

     * error-prone code like:
     *
     * Striped<Lock> stripedLock = Striped.lazyWeakXXX(...)'
     * Iterable<Lock> locks = stripedLock.bulkGet(keys);
     * for (Lock lock : locks) {
     *   lock.lock();
     * }
     * operation();
     * for (Lock lock : locks) {
     *   lock.unlock();
     * }
     *

    for (int i = 0; i < reps; i++) {
      lock.lock();
      lock.unlock();
    }
  }

  @Benchmark
  void orderedPlainLocks(int reps) {
    lockAndUnlockNested(plainLocks, reps);
  }

  @Benchmark
  void orderedCycleDetectingLocks(int reps) {
    lockAndUnlockNested(detectingLocks, reps);
  }

  private static void lockAndUnlockNested(Lock[] locks, int reps) {

            assertTrue(true);
        }
    }

    public void test_crawl_withWebConfigOnly() {
        List<String> webConfigIds = Arrays.asList("webConfig1", "webConfig2");

        // Mock CrawlingConfigHelper
        CrawlingConfigHelper crawlingConfigHelper = new CrawlingConfigHelper() {
            @Override
            public List<WebConfig> getWebConfigListByIds(List<String> webConfigIdList) {

    public void test_setPagerCustomizer_and_getPagerCustomizer() {
        // Create a mock customizer
        ComponentCustomizer customizer = new ComponentCustomizer() {
            @Override
            public void customize(org.lastaflute.di.core.ComponentDef componentDef) {
                // Mock implementation
            }
        };

        // Set the customizer