void setUp() throws Exception {
        mockService = new MockWitnessService();
        mockService.start();

        // Setup mock configuration with lenient stubbing
        lenient().when(mockContext.getConfig()).thenReturn(mockConfig);
        lenient().when(mockConfig.isUseWitness()).thenReturn(true);
        lenient().when(mockConfig.getWitnessHeartbeatTimeout()).thenReturn(120000L);

    void testConstructor() {
        // Given & When
        Smb2FlushResponse flushResponse = new Smb2FlushResponse(mockConfig);

        // Then
        assertNotNull(flushResponse);
        // Cannot test getConfig() as it's protected
    }

    @Nested
    @DisplayName("writeBytesWireFormat tests")
    class WriteBytesWireFormatTests {

        @Test
        @DisplayName("Should return 0 for write bytes")

    private byte[] testFileId;
    private Smb2Lock[] testLocks;
    private Smb2LockRequest request;

    @BeforeEach
    void setUp() {
        MockitoAnnotations.openMocks(this);
        when(mockContext.getConfig()).thenReturn(mockConfig);

        testFileId = new byte[16];
        new SecureRandom().nextBytes(testFileId);

        testLocks = new Smb2Lock[] { new Smb2Lock(0L, 100L, Smb2Lock.SMB2_LOCKFLAG_EXCLUSIVE_LOCK) };

            } else {
                // Create new handle info if not found
                HandleInfo newInfo =
                        new HandleInfo(path, guid, fileId, HandleType.PERSISTENT, context.getConfig().getPersistentHandleTimeout(), null);
                handles.put(path, newInfo);
                guidToHandle.put(guid, newInfo);
                persistHandle(newInfo);

        // Common happy-path defaults
        // Use lenient() to avoid strict stubbing issues with Mockito
        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);

            CIFSContext ctx = mock(CIFSContext.class);
            Configuration cfg = mock(Configuration.class);
            when(cfg.isIgnoreCopyToException()).thenReturn(ignore);
            when(ctx.getConfig()).thenReturn(cfg);
            return ctx;
        }

        @Test
        @DisplayName("copyFile wraps and throws when ignoreCopyToException=false")

    private byte[] testFileId;

    @BeforeEach
    void setUp() {
        mockConfig = mock(Configuration.class);
        mockContext = mock(CIFSContext.class);
        when(mockContext.getConfig()).thenReturn(mockConfig);
        when(mockConfig.getMaximumBufferSize()).thenReturn(65536);
        when(mockConfig.getListSize()).thenReturn(65536);

        testFileId = new byte[16];

        props.setProperty("jcifs.smb.client.channelHealthCheckInterval", "5");

        multiConfig = new PropertyConfiguration(props);

        // Mock context and session for ChannelManager
        when(mockContext.getConfig()).thenReturn(multiConfig);
        when(mockSession.getSessionKey()).thenReturn(new byte[16]);

        channelManager = new ChannelManager(mockContext, mockSession);
    }

    @Test

        void testConstructor() {
            Smb2WriteResponse writeResponse = new Smb2WriteResponse(mockConfig);
            assertNotNull(writeResponse);
            // Note: getConfig() is protected, cannot test directly
        }

        @Test
        @DisplayName("Should initialize count to zero")
        void testInitialCountValue() {
            assertEquals(0, response.getCount());
        }

    private DirectoryLeaseManager directoryLeaseManager;
    private AutoCloseable mocks;

    @BeforeEach
    public void setUp() {
        mocks = MockitoAnnotations.openMocks(this);
        when(context.getConfig()).thenReturn(config);
        when(config.isDirectoryNotificationsEnabled()).thenReturn(false); // Disable for unit tests

        directoryLeaseManager = new DirectoryLeaseManager(context, baseLeaseManager);
    }