@BeforeEach
    void setUp() {
        // Setup is handled by MockitoExtension
    }

    @Test
    void constructor_shouldOpenPolicySuccessfully() throws IOException {
        // Arrange
        String server = "testServer";
        int access = 123;

        // Mock the behavior of sendrecv for MsrpcLsarOpenPolicy2
        doAnswer(invocation -> {

        verify(tree).connectLogon(null);
    }

    @Test
    @DisplayName("connectLogon propagates SmbException from implementation")
    void connectLogon_throws_propagates() throws Exception {
        // Arrange
        doThrow(new SmbException("login failed")).when(tree).connectLogon(context);

        // Act + Assert
        SmbException ex = assertThrows(SmbException.class, () -> tree.connectLogon(context));

    void mock_noInteractions() {
        // Arrange/Act: do nothing
        // Assert: verify no interactions
        verifyNoInteractions(mockEntry);
    }

    // --- Fake implementation tests (happy path and edge cases) ---

    @Test
    @DisplayName("Fake implementation returns provided values (happy path)")
    void fakeImplementation_happyPath() {
        // Arrange

    void setUp() {
        // MockitoAnnotations.openMocks(this); // Not needed with @ExtendWith(MockitoExtension.class)
    }

    @Test
    void constructor_shouldOpenPolicySuccessfully() throws IOException {
        // Arrange
        String server = "testServer";
        int access = 123;

        // Mock the behavior of sendrecv for MsrpcLsarOpenPolicy2
        doAnswer(invocation -> {

    @Mock
    private Address remoteAddress;

    @BeforeEach
    void setUp() {
        // Common setup for mocks if needed
    }

    @Test
    void testGetContext() {
        // Arrange
        when(smbTransport.getContext()).thenReturn(cifsContext);

        // Act
        CIFSContext result = smbTransport.getContext();

        // Assert
        assertNotNull(result, "Context should not be null");

        public long getSize() {
            return size;
        }
    }

    // --- Happy path: direct values are returned as provided ---
    @Test
    void returnsProvidedValues_happyPath() {
        // Arrange
        SmbBasicFileInfo info = new TestInfo(0x20 /* ARCHIVE */, 1_600_000_000_000L, 1_700_000_000_000L, 1_650_000_000_000L, 42L);

        // Act & Assert

        when(tree.acquire()).thenReturn(tree);
    }

    @Test
    @DisplayName("Getters return constructor values and acquire is called")
    void gettersAndAcquire() throws Exception {
        // Arrange
        stubAcquireReturnsSelf();
        String wildcard = "*.*";
        int attrs = 123;
        FileEntry initial = entry("first");
        List<FileEntry[]> pages = List.of(new FileEntry[][] { new FileEntry[] {} });

        closeHandleCaptor = ArgumentCaptor.forClass(MsrpcSamrCloseHandle.class);
    }

    @Test
    void constructor_shouldOpenDomainSuccessfully() throws IOException {
        // Arrange
        int access = 0x01; // Example access value
        // Simulate successful RPC call
        doAnswer(invocation -> {
            MsrpcSamrOpenDomain rpc = invocation.getArgument(0);

    @ParameterizedTest
    @MethodSource("intErrorCodes")
    @DisplayName("int ctor: sets message and NT status as expected")
    void intConstructor_populatesMessageAndStatus(int errCode, int expectedStatus) {
        // Arrange & Act: create exception with error code
        SmbAuthException ex = new SmbAuthException(errCode);

        // Assert: type, message derived from code, status mapping, and no cause
        assertNotNull(ex);

     * 1. Basic constructor validation
     * --------------------------------------------------------------------- */
    @Test
    void constructorAcceptsNonNullObject() {
        // Arrange : create a dummy address
        InetAddress dummy = mock(InetAddress.class);
        // Act
        UniAddress ua = new UniAddress(dummy);
        // Assert