when(smbFileHandle.isValid()).thenReturn(true);
        assertTrue(smbFileHandle.isValid(), "isValid should return true when the handle is valid.");
        verify(smbFileHandle, times(1)).isValid();
    }

    /**
     * Test isValid() when the handle is invalid.
     */
    @Test
    void testIsValid_whenInvalid() {
        when(smbFileHandle.isValid()).thenReturn(false);

        // Set up mock behaviors
        when(mockContext.getConfig()).thenReturn(mockConfig);
        when(mockContext.getCredentials()).thenReturn(mockCredentials);
        when(mockContext.getTransportPool()).thenReturn(mockTransportPool);
        when(mockConfig.getDfsTtl()).thenReturn(300L);

        // Mock transport to throw IOException - simulating connection failure

    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());

        when(mockConfig.isDfsDisabled()).thenReturn(false);
        when(mockContext.getTransportPool()).thenReturn(mockTransportPool);
        when(mockTransportPool.getSmbTransport(any(), anyString(), anyInt(), anyBoolean(), anyBoolean())).thenReturn(mockTransport);
        when(mockTransport.unwrap(any())).thenReturn(mockTransport);

    private SmbPipeOutputStream newStream() throws CIFSException {
        // Arrange common constructor collaborators to avoid touching network/state
        when(handle.getPipe()).thenReturn(pipe);
        when(tree.isSMB2()).thenReturn(true);
        when(tree.getSendBufferSize()).thenReturn(4096);
        // Act
        return new SmbPipeOutputStream(handle, tree);
    }

    @ParameterizedTest

        // When
        int result = mockReferralData.getPathConsumed();

        // Then
        assertEquals(pathConsumed, result);
        verify(mockReferralData).getPathConsumed();
    }

    @Test
    @DisplayName("Should get path")
    void testGetPath() {
        // Given
        String path = "/test/path";

    }

    // Error propagation: connect to logon share throws SmbException
    @Test
    @DisplayName("treeConnectLogon throws SmbException when underlying call fails")
    void treeConnectLogon_throws() throws SmbException {
        doThrow(new SmbException("logon failed")).when(session).treeConnectLogon();
        SmbException ex = assertThrows(SmbException.class, () -> session.treeConnectLogon());

    }

    @Test
    @DisplayName("unwrap method should return correct type when supported")
    void testUnwrapMethodContract() throws Exception {
        // Given
        when(mockAddress.unwrap(Address.class)).thenReturn(mockAddress);

        // When & Then
        Address unwrapped = mockAddress.unwrap(Address.class);

        // Given
        when(mockNetbiosName.getNameType()).thenReturn(nameType);

        // When
        int result = mockNetbiosName.getNameType();

        // Then
        assertEquals(nameType, result);
    }

    @Test
    @DisplayName("Should handle null name")
    void testNullName() {
        // Given
        when(mockNetbiosName.getName()).thenReturn(null);

        // When

        MockitoAnnotations.openMocks(this);
        when(session.getConfig()).thenReturn(config);
        when(session.getContext()).thenReturn(context);
        when(session.getTransport()).thenReturn(transport);
        when(session.acquire()).thenReturn(session);
        when(config.isTraceResourceUsage()).thenReturn(false);
        when(context.getConfig()).thenReturn(config);
        when(session.isConnected()).thenReturn(true);
    }