}

    @Test
    @DisplayName("accept: returns true for directories; verifies isDirectory is invoked")
    void accept_returnsTrueForDirectory_andVerifiesInteraction() throws Exception {
        // Arrange: filter that accepts directories only
        SmbFileFilter filter = f -> f.isDirectory();
        when(smbFile.isDirectory()).thenReturn(true);

        // Act
        boolean result = filter.accept(smbFile);

            // Given
            when(mockResource.isDirectory()).thenReturn(true);
            when(mockResource.children()).thenReturn(mockIterator);

            // When
            boolean isDirectory = mockResource.isDirectory();
            CloseableIterator<SmbResource> children = mockResource.children();

            // Then
            assertTrue(isDirectory, "Should support SMB directory detection");

    }

    private void deleteDirectory(File dir) {
        File[] files = dir.listFiles();
        if (files != null) {
            for (File file : files) {
                if (file.isDirectory()) {
                    deleteDirectory(file);
                } else {
                    file.delete();
                }
            }
        }
        dir.delete();
    }

            this.size = attrs.getSize();
            this.lastModified = attrs.getLastWriteTime();
            this.isDirectory = attrs.isDirectory();
            this.attributes = attrs.getAttributes();
            this.creationTime = attrs.getCreateTime();
            this.lastAccessTime = attrs.getLastAccessTime();
        }
        
        public boolean matches(SmbFileAttributes attrs) {

     */
    protected int compareSizes(final SmbFile f1, final String f1name, final SmbFile f2) throws IOException {
        long diff;

        if (f1.isDirectory() != f2.isDirectory()) {
            return f1.isDirectory() ? -1 : 1;
        }
        if (f1.isDirectory()) {
            return f1name.compareToIgnoreCase(f2.getName());
        }
        diff = f1.length() - f2.length();
        if (diff == 0) {

     */
    protected int compareSizes(final SmbFile f1, final String f1name, final SmbFile f2) throws IOException {
        long diff;

        if (f1.isDirectory() != f2.isDirectory()) {
            return f1.isDirectory() ? -1 : 1;
        }
        if (f1.isDirectory()) {
            return f1name.compareToIgnoreCase(f2.getName());
        }
        diff = f1.length() - f2.length();
        if (diff == 0) {

        }

        @Test
        void testIsDirectory() throws SmbException {
            // Arrange
            doReturn(true).when(smbFile).isDirectory();

            // Act & Assert
            assertTrue(smbFile.isDirectory());
        }

        @Test
        void testIsFile() throws SmbException {
            // Arrange
            doReturn(true).when(smbFile).isFile();

         * @param lastModified last modified time
         * @param isDirectory true if directory
         * @param attributes file attributes
         * @param creationTime creation time
         * @param lastAccessTime last access time
         */
        public FileInfo(String name, long size, long lastModified, boolean isDirectory, long attributes, long creationTime,
                long lastAccessTime) {

        when(mockFile1.getName()).thenReturn("document.txt");
        when(mockFile1.length()).thenReturn(2048L);
        when(mockFile1.lastModified()).thenReturn(System.currentTimeMillis() - 3600000);
        when(mockFile1.isDirectory()).thenReturn(false);
        when(mockFile1.getAttributes()).thenReturn(0x20); // FILE_ATTRIBUTE_ARCHIVE
        when(mockFile1.createTime()).thenReturn(System.currentTimeMillis() - 7200000);

        // Setup mock files
        when(mockFile1.getName()).thenReturn("file1.txt");
        when(mockFile1.length()).thenReturn(1024L);
        when(mockFile1.lastModified()).thenReturn(1000L);
        when(mockFile1.isDirectory()).thenReturn(false);
        when(mockFile1.getAttributes()).thenReturn(0x20);
        when(mockFile1.createTime()).thenReturn(500L);
        when(mockFile1.lastAccess()).thenReturn(800L);