*/
public class ThumbnailManager {
    private static final String NOIMAGE_FILE_SUFFIX = ".txt";

    /**
     * Default directory name for thumbnails.
     */
    protected static final String THUMBNAILS_DIR_NAME = "thumbnails";

    /**
     * Logger instance for this class.
     */
    protected static final Logger logger = LogManager.getLogger(ThumbnailManager.class);

    /**

        thumbnailManager = new TestThumbnailManager();
        thumbnailManager.baseDir = tempDir;
        thumbnailManager.thumbnailTaskQueue = new LinkedBlockingQueue<>(100);
        thumbnailManager.generating = false;
    }

    // Test implementation of ThumbnailManager to avoid container dependencies
    private class TestThumbnailManager extends ThumbnailManager {
        @Override

                    return 60;
                }
            };
            ComponentUtil.register(mockConfig, "fessConfig");

            // Register mock ThumbnailManager
            ThumbnailManager mockThumbnailManager = new ThumbnailManager() {
                private int callCount = 0;

                @Override
                public int generate(ExecutorService executorService, boolean cleanup) {

        purgeThumbnailJob = new PurgeThumbnailJob();

        // Create a mock ThumbnailManager
        thumbnailManager = new MockThumbnailManager();

        ComponentUtil.register(thumbnailManager, "thumbnailManager");
    }

    @Override
    public void tearDown() throws Exception {
        super.tearDown();
    }

    // Test default constructor
    public void test_constructor() {

import org.codelibs.fess.helper.KeyMatchHelper;
import org.codelibs.fess.helper.ProcessHelper;
import org.codelibs.fess.helper.SystemHelper;
import org.codelibs.fess.thumbnail.ThumbnailManager;
import org.codelibs.fess.mylasta.direction.FessConfig;

import org.codelibs.fess.opensearch.config.exbhv.ScheduledJobBhv;
import org.codelibs.fess.opensearch.config.exentity.ScheduledJob;