// Mock implementation
        };
        generator.searchEngineClient = mockClient;
        assertEquals(mockClient, generator.searchEngineClient);
    }

    // Helper methods for setting up mock components
    private void setupMockComponents() {
        try {
            // Register mock system properties

            // Mock implementation
        }

        public void deleteElevateWord(String word, boolean apply) {
            // Mock implementation
        }

        public void addElevateWord(org.codelibs.fess.suggest.entity.ElevateWord elevateWord, boolean apply) {
            // Mock implementation
        }

    final Lock lock;

    LockingThread(Lock lock) {
      this.lock = lock;
    }

    @Override
    public void run() {
      lock.lock();
      try {
        locked.countDown();
        finishLatch.await(1, MINUTES);
      } catch (InterruptedException e) {
        fail(e.toString());
      } finally {
        lock.unlock();
      }
    }

    final Lock lock;

    LockingThread(Lock lock) {
      this.lock = lock;
    }

    @Override
    public void run() {
      lock.lock();
      try {
        locked.countDown();
        finishLatch.await(1, MINUTES);
      } catch (InterruptedException e) {
        fail(e.toString());
      } finally {
        lock.unlock();
      }
    }

                    // 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