void mockReturnsConfiguredValues() {
        FileEntry mock = mock(FileEntry.class);
        when(mock.getName()).thenReturn("test.txt");
        when(mock.getType()).thenReturn(1);
        when(mock.getAttributes()).thenReturn(128);
        when(mock.createTime()).thenReturn(1_500L);
        when(mock.lastModified()).thenReturn(1_800L);
        when(mock.length()).thenReturn(100L);

        assertEquals("test.txt", mock.getName());

        byte[] buffer = new byte[256];

        // When
        req.encode(buffer, 0);

        // Then
        assertEquals(0, SMBUtil.readInt2(buffer, Smb2Constants.SMB2_HEADER_LENGTH + 6)); // Path length should be 0
    }

    @Test
    @DisplayName("Should handle null path")
    void testNullPath() {
        // When creating with null path

        lenient().when(tree.acquire()).thenReturn(tree);
        lenient().when(tree.getConfig()).thenReturn(config);
        lenient().when(config.getListCount()).thenReturn(10);
        lenient().when(config.getListSize()).thenReturn(4096);

        lenient().when(parent.getLocator()).thenReturn(locator);
        lenient().when(locator.getUNCPath()).thenReturn("\\\\SERVER\\Share\\dir\\"); // ends with \\

    void testMD4Hash() {
        // Given
        String input = "Hello World";
        byte[] data = input.getBytes();

        // When
        MessageDigest md4 = Crypto.getMD4();
        byte[] hash = md4.digest(data);

        // Then
        assertNotNull(hash);
        assertEquals(16, hash.length); // MD4 produces 128-bit hash
    }

    @Test

        // Setup mock notify information
        when(mockNotifyInfo1.getAction()).thenReturn(FileNotifyInformation.FILE_ACTION_ADDED);
        when(mockNotifyInfo1.getFileName()).thenReturn("test1.txt");

        when(mockNotifyInfo2.getAction()).thenReturn(FileNotifyInformation.FILE_ACTION_MODIFIED);
        when(mockNotifyInfo2.getFileName()).thenReturn("test2.txt");
    }

    @Test

        int dstIndex = 0;

        // When
        int result = smbComRename.writeBytesWireFormat(dst, dstIndex);

        // Then
        assertTrue(result > 0);
        assertEquals((byte) 0x04, dst[0]); // First buffer format byte

        // Find the second buffer format byte by searching for it
        // In Unicode mode, the old filename is written as Unicode, then 0x04, then an alignment byte

        // Arrange
        when(mockConnection.getRequestMethod()).thenReturn("GET");
        when(mockConnection.getAllowUserInteraction()).thenReturn(true);
        when(mockConnection.getDoInput()).thenReturn(true);
        when(mockConnection.getDoOutput()).thenReturn(true);
        when(mockConnection.getIfModifiedSince()).thenReturn(12345L);
        when(mockConnection.getUseCaches()).thenReturn(false);

     */
    @Test
    void testConstructor_EmptyToken() {
        // 1. GIVEN
        byte[] emptyToken = new byte[0];
        Map<Integer, KerberosKey> keys = new HashMap<>();

        // 2. WHEN & 3. THEN
        // When ASN1InputStream.readObject() returns null due to empty input,
        // ASN1Util.as() throws NullPointerException (not wrapped)
        Exception exception = assertThrows(Exception.class, () -> {

        doNothing().when(mockBufferCache).releaseBuffer(buffer);

        // When & Then
        assertDoesNotThrow(() -> {
            mockBufferCache.releaseBuffer(buffer);
        }, "releaseBuffer should handle valid buffers");
    }

    @Test
    @DisplayName("getBuffer should return buffers for use")
    void testGetBufferBasicUsage() {
        // When
        byte[] buffer1 = testCache.getBuffer();

            assertEquals(SmbComTransaction.TRANSACTION_BUF_SIZE, buffer.length, "Buffer should have correct size");
            buffers.add(buffer);
        }

        // When - Release all buffers back
        for (byte[] buffer : buffers) {
            BufferCache.releaseBuffer(buffer);
        }

        // Then - Should be able to get buffers again