assertTrue(n > 0);
        // Note: In actual implementation, uid is NOT propagated for non-AndX SMBs
        // uid is only set for AndXServerMessageBlock instances (line 167 in AndXServerMessageBlock.java)
        // Only useUnicode is set before the instanceof check (line 149)
        assertEquals(block.useUnicode, next.useUnicode, "useUnicode must be propagated");

            }
        };

        // When
        iterator.close();

        // Then
        verify(mockDelegate).close();
    }

    /**
     * Test close method propagates exception.
     */
    @Test
    void testCloseWithException() throws CIFSException {
        // Given
        when(mockDelegate.hasNext()).thenReturn(false);

            when(mockSmbPipeHandleInternal.getSessionKey()).thenReturn(expectedKey);
            assertArrayEquals(expectedKey, handle.getSessionKey());
        }

        @Test
        @DisplayName("Should propagate CIFSException when getting session key")
        void testGetSessionKey_ThrowsCIFSException() throws Exception {
            DcerpcPipeHandle handle = createMockedDcerpcPipeHandle();

        TestIterator iterator = new TestIterator(null);
        iterator.close();

        verify(delegate).close();
    }

    @Test
    @DisplayName("Close propagates exception")
    void closeException() throws CIFSException {
        when(delegate.hasNext()).thenReturn(false);
        doThrow(new CIFSException("Close failed")).when(delegate).close();

            doThrow(testException).when(mockSession).close();

            Exception thrownException = assertThrows(Exception.class, mockSession::close, "close() should propagate exceptions");
            assertEquals("Test close exception", thrownException.getMessage());
        }
    }

    @Nested
    @DisplayName("Configuration Access Tests")
    class ConfigurationAccessTest {

            assertThrows(SmbUnsupportedOperationException.class, () -> SmbEnumerationUtil.doEnum(parent, "*", 0, null, null));
        }

        @Test
        @DisplayName("list propagates SmbUnsupportedOperationException from doEnum")
        void list_propagatesUnsupportedOperationException() throws Exception {
            // Arrange: same setup as above to force doEnum -> SmbUnsupportedOperationException

        verify(treeConnection).ensureDFSResolved(resourceLoc);
    }

    @Test
    @DisplayName("hasCapability delegates and propagates exceptions")
    void hasCapabilityDelegates() throws Exception {
        // Happy path delegates; invalid case propagates SmbException
        when(treeConnection.hasCapability(123)).thenReturn(true);
        assertTrue(handle.hasCapability(123));

        verify(transport).isSigningOptional();
        verify(transport).isSigningEnforced();
    }

    // Error propagation: signing checks may throw SmbException
    @Test
    @DisplayName("signing checks propagate SmbException")
    void signingChecks_throw() throws Exception {
        doThrow(new SmbException("opt error")).when(transport).isSigningOptional();

            // Then: Should call sendrecv with bind message
            verify(spyHandle).sendrecv(any(DcerpcMessage.class));
        }

        @Test
        @DisplayName("Should propagate IOException during bind")
        void testBindIOException() throws DcerpcException, IOException {
            // Given: Spy that throws IOException on sendrecv

            assertEquals(0, testMessage.getTreeId());
            testMessage.setTreeId(123);
            assertEquals(123, testMessage.getTreeId());
        }

        @Test
        @DisplayName("Should propagate tree ID to chained message")
        void testTreeIdPropagation() {
            TestServerMessageBlock2 nextMessage = new TestServerMessageBlock2(mockConfig);
            testMessage.chain(nextMessage);