SmbTreeHandleImpl tree;

    private void stubValidTree(long treeId, boolean connected, boolean smb2) {
        lenient().when(tree.acquire()).thenReturn(tree);
        lenient().when(tree.getTreeId()).thenReturn(treeId);
        lenient().when(tree.isConnected()).thenReturn(connected);
        lenient().when(tree.isSMB2()).thenReturn(smb2);
    }

    @Test
    @DisplayName("Constructor with null tree throws NPE (byte[] fid variant)")

        when(ctx.getConfig()).thenReturn(config);
        when(config.getCapabilities()).thenReturn(0);
        when(config.getFlags2()).thenReturn(0);
        when(config.getMaxMpxCount()).thenReturn(1);
        when(config.getSendBufferSize()).thenReturn(4096);
        when(config.getReceiveBufferSize()).thenReturn(4096);
        when(config.getTransactionBufferSize()).thenReturn(4096);

            Info mockInfo = mock(Info.class);

            // Set up mock behavior
            when(mockInfo.getAttributes()).thenReturn(0x20);
            when(mockInfo.getSize()).thenReturn(1024L);
            when(mockInfo.getCreateTime()).thenReturn(1000000L);
            when(mockInfo.getLastWriteTime()).thenReturn(2000000L);

            // Use the mock
            response.info = mockInfo;

        // Test case for isCancel method when it returns true
        when(mockRequest.isCancel()).thenReturn(true);

        assertTrue(mockRequest.isCancel(), "isCancel should return true when mocked to do so.");
        verify(mockRequest, times(1)).isCancel();
    }

    @Test
    void testIsCancelFalse() {
        // Test case for isCancel method when it returns false
        when(mockRequest.isCancel()).thenReturn(false);

        }
    }

    @BeforeEach
    void setUp() {
        lenient().when(fileEntry.getName()).thenReturn("test");
    }

    @Test
    @DisplayName("Iterator without filter - simple case")
    void iteratorWithoutFilter() {
        // Setup: constructor calls advance() once
        when(delegate.hasNext()).thenReturn(true, false);
        when(delegate.next()).thenReturn(fileEntry);

        @Test
        @DisplayName("Should use special name when no expanded names")
        void testFromReferralWithSpecialName() {
            when(mockReferral.getTtl()).thenReturn(300);
            when(mockReferral.getRFlags()).thenReturn(Trans2GetDfsReferralResponse.FLAGS_NAME_LIST_REFERRAL);
            when(mockReferral.getExpandedNames()).thenReturn(new String[0]);
            when(mockReferral.getSpecialName()).thenReturn("\\SPECIAL");

        // Test with smaller maximum buffer size
        when(mockConfig.getMaximumBufferSize()).thenReturn(8192);
        when(mockConfig.getListSize()).thenReturn(16384);

        request = new Smb2QueryDirectoryRequest(mockConfig);
        assertNotNull(request);

        // Test with smaller list size
        when(mockConfig.getMaximumBufferSize()).thenReturn(16384);
        when(mockConfig.getListSize()).thenReturn(8192);

        assertNotNull(connection, "Connection should not be null even when jcifs is in handler path.");
        assertTrue(connection instanceof NtlmHttpURLConnection, "Should use cached handler and wrap it.");
    }

    @Test
    void testOpenConnection_NullSystemProperty_UsesDefaultHandlers() throws Exception {
        // This test verifies that when the system property is null, the handler

        // Current implementation throws NullPointerException when string is null
        assertThrows(NullPointerException.class, () -> {
            pacString.check(testString);
        }, "A NullPointerException is thrown when checking a null string.");
    }

    /**
     * Tests the {@link PacUnicodeString#check(String)} method with a non-empty string when the pointer is zero.

            @Override
            public int getErrorCode() {
                return DcerpcError.DCERPC_FAULT_OP_RNG_ERROR;
            }
        }).when(mockHandle).sendrecv(any(MsrpcSamrConnect4.class));
        // Subsequent call for MsrpcSamrConnect2 should succeed
        doNothing().when(mockHandle).sendrecv(any(MsrpcSamrConnect2.class));

        try (SamrPolicyHandle handle = new SamrPolicyHandle(mockHandle, server, access)) {