/**
     * Test for close() method throwing CIFSException.
     * Verifies that the method correctly throws a CIFSException when configured to do so.
     * @throws CIFSException
     */
    @Test
    void testClose_throwsCIFSException() throws CIFSException {
        doThrow(new CIFSException("Test Exception")).when(smbTreeHandle).close();
        assertThrows(CIFSException.class, () -> smbTreeHandle.close(), "close() should throw CIFSException");

    void hasCapability_variousCaps(int cap) throws SmbException {
        when(transport.hasCapability(anyInt())).thenAnswer(inv -> ((int) inv.getArgument(0)) >= 0);

        boolean result = transport.hasCapability(cap);

        assertEquals(cap >= 0, result);
        verify(transport, times(1)).hasCapability(cap);
    }

    // Invalid input: simulate underlying SmbException when capability check fails
    @Test

        when(sh.isSMB2()).thenReturn(true);
        when(dh.isSMB2()).thenReturn(true);
        when(sh.isSameTree(dh)).thenReturn(true);

        // Source open returns a handle that reports size 0
        SmbFileHandleImpl sfd = mock(SmbFileHandleImpl.class);
        when(sfd.getInitialSize()).thenReturn(0L);

            rpc.retval = 0;
            return null;
        }).when(mockDcerpcHandle).sendrecv(any(MsrpcLsarOpenPolicy2.class));

        LsaPolicyHandle handle = new LsaPolicyHandle(mockDcerpcHandle, "server", 123);

        // Now, mock the behavior for MsrpcLsarClose to throw IOException
        doThrow(new IOException("Close network error")).when(mockDcerpcHandle).sendrecv(any(MsrpcLsarClose.class));

        // Act & Assert

        lenient().when(mockContext.getConfig()).thenReturn(mockConfig);
        lenient().when(mockConfig.getWitnessHeartbeatTimeout()).thenReturn(120000L);
        lenient().when(mockConfig.getWitnessRegistrationTimeout()).thenReturn(300000L);
        lenient().when(mockConfig.getWitnessReconnectDelay()).thenReturn(1000L);
        lenient().when(mockConfig.isWitnessServiceDiscovery()).thenReturn(true);
    }

    void setUp() {
        mockContext = mock(CIFSContext.class);
        mockConfig = mock(Configuration.class);
        when(mockContext.getConfig()).thenReturn(mockConfig);
        when(mockConfig.getLeaseTimeout()).thenReturn(30000);
        when(mockConfig.getMaxLeases()).thenReturn(1000);
        when(mockConfig.getLeaseBreakTimeout()).thenReturn(60);
        leaseManager = new LeaseManager(mockContext);
    }

    @AfterEach

        when(mockSearchResponse.getScrollId()).thenReturn("scroll1", "scroll1");
        when(mockSearchResponse.getHits()).thenReturn(mockSearchHits);
        when(mockSearchHits.getHits()).thenReturn(new SearchHit[] { mockHit }, new SearchHit[0]);
        when(mockHit.getIndex()).thenReturn("test-index");
        when(mockHit.getId()).thenReturn("doc1");

        verify(tree).send(request, RequestParam.NO_TIMEOUT, RequestParam.NO_RETRY);
    }

    @Test
    @DisplayName("send throws CIFSException for null request when implementation does")
    void send_nullRequest_throws() throws Exception {
        // Arrange
        when(tree.send(isNull())).thenThrow(new CIFSException("null request"));

        // Act
        CIFSException ex = assertThrows(CIFSException.class, () -> tree.send(null));

     */
    @Test
    void testGetKey_KeyExists() throws LoginException {
        when(key1.getKeyType()).thenReturn(KEY_TYPE_1);
        when(key2.getKeyType()).thenReturn(KEY_TYPE_2);
        Set<Object> privateCredentials = new HashSet<>();
        privateCredentials.add(key1);
        privateCredentials.add(key2);
        when(subject.getPrivateCredentials()).thenReturn(privateCredentials);

        doThrow(new CIFSException("Context cannot be null")).when(sidResolver).resolveSids(eq(null), anyString(), any(SID[].class));

        assertThrows(CIFSException.class, () -> sidResolver.resolveSids(null, testServerName, testSids));
    }

    @Test
    void testResolveSids_WithNullServerName() throws CIFSException {
        doThrow(new CIFSException("Server name cannot be null")).when(sidResolver)