}

    @Test
    public void testGetChildren() {
        // Add multiple children
        entry.updateChild("file1.txt", 1024L, 1000L, false, 0x20, 500L, 800L);
        entry.updateChild("file2.txt", 2048L, 2000L, false, 0x20, 600L, 900L);
        entry.updateChild("dir1", 0L, 3000L, true, 0x10, 700L, 1000L);

        List<DirectoryCacheEntry.FileInfo> children = entry.getChildren();

                DirectoryCacheScope.IMMEDIATE_CHILDREN);

        DirectoryCacheEntry entry = directoryLeaseManager.getCacheEntry(directoryPath);
        entry.updateChild("file1.txt", 1024L, 1000L, false, 0x20, 500L, 800L);
        entry.updateChild("file2.txt", 2048L, 2000L, false, 0x20, 600L, 900L);
        entry.markComplete();

        // Test FILE_ADDED - should invalidate cache

            return size == attrs.getSize() 
                && lastModified == attrs.getLastWriteTime()
                && attributes == attrs.getAttributes();
        }
    }
    
    public void updateChild(String childName, SmbFileAttributes attrs) {
        lock.writeLock().lock();
        try {
            FileInfo existing = children.get(childName);
            FileInfo newInfo = new FileInfo(childName, attrs);

            updateThreads[i] = new Thread(() -> {
                for (int j = 0; j < 20; j++) {
                    String fileName = "thread" + threadId + "_file" + j + ".txt";
                    entry.updateChild(fileName, j * 100L, System.currentTimeMillis(), false, 0x20, System.currentTimeMillis() - 10000,
                            System.currentTimeMillis() - 5000);
                }
            });

     * @param isDirectory true if directory
     * @param attributes file attributes
     * @param creationTime creation time
     * @param lastAccessTime last access time
     */
    public void updateChild(String childName, long size, long lastModified, boolean isDirectory, long attributes, long creationTime,
            long lastAccessTime) {
        lock.writeLock().lock();
        try {

        if (entry == null)
            return;

        // Update cache with new directory listing
        for (SmbFile file : files) {
            try {
                entry.updateChild(file.getName(), file.length(), file.lastModified(), file.isDirectory(), file.getAttributes(),
                        file.createTime(), file.lastAccess());
            } catch (Exception e) {