@Mock
    private rpc.unicode_string mockUnicodeString;

    @Mock
    private lsarpc.LsarSidArray mockLsarSidArray;

    @BeforeEach
    void setUp() {
        // Directly set the deferred field on the mock
        mockNdrBuffer.deferred = mockDeferredBuffer;

        // Configure mocks for NdrBuffer interactions
        lenient().when(mockDeferredBuffer.derive(anyInt())).thenReturn(mockDeferredBuffer);

            // Arrange & Act
            SmbNamedPipe pipe = new SmbNamedPipe(url, SmbPipeResource.PIPE_TYPE_RDWR, ctx());

            // Assert: type is named pipe and pipe type preserved
            assertEquals(SmbConstants.TYPE_NAMED_PIPE, pipe.getType(), "Type should be TYPE_NAMED_PIPE");
            assertEquals(SmbPipeResource.PIPE_TYPE_RDWR, pipe.getPipeType(), "Pipe type should match constructor");
        }

        assertTrue(ts.contains(ex.getMessage()), "toString should contain the detail message");
    }

    @ParameterizedTest(name = "Message preserved: [{0}]")
    @MethodSource("messages")
    @DisplayName("Message constructor preserves provided messages, including null/edge cases")
    void messageConstructor_preservesMessage(String msg) {
        // Arrange & Act

            // Assert
            assertNotNull(unwrapped);
            assertTrue(unwrapped instanceof DosFileFilter);

            // Verify fields preserved (via reflection since they are protected)
            var wildcardField = DosFileFilter.class.getDeclaredField("wildcard");
            wildcardField.setAccessible(true);

    @Mock
    private rpc.unicode_string mockUnicodeString;

    @Mock
    private lsarpc.LsarSidArray mockLsarSidArray;

    @BeforeEach
    void setUp() {
        // Directly set the deferred field on the mock
        mockNdrBuffer.deferred = mockDeferredBuffer;

        // Configure mocks for NdrBuffer interactions
        lenient().when(mockDeferredBuffer.derive(anyInt())).thenReturn(mockDeferredBuffer);

        // Act
        SMBSignatureValidationException ex = new SMBSignatureValidationException("msg", mocked);

        // Assert
        assertSame(mocked, ex.getCause(), "Mocked cause should be preserved");
        verifyNoInteractions(mocked);
    }

    // Reflection-based check: ensure serialVersionUID remains the declared constant
    @Test
    @DisplayName("serialVersionUID matches declared constant")

        };

        SmbException ex = assertThrows(SmbException.class, () -> filter.accept(mockDir, "x"));
        assertEquals("boom", ex.getMessage(), "Exception message should be preserved");
        verifyNoInteractions(mockDir);
    }

    /**
     * Interaction with dependency: implementation can use directory's methods to make decisions.
     * Tests a filter that uses directory path information.

    static Stream<Arguments> nameProvider() {
        return Stream.of(Arguments.of("", "empty string is allowed"), Arguments.of(" ", "single space is preserved"),
                Arguments.of("复杂名.txt", "unicode name is preserved"), Arguments.of(null, "null name is passed through"));
    }

    @ParameterizedTest(name = "getName returns as-set: [{0}] - {1}")
    @MethodSource("nameProvider")

        // Encode to set headerStart
        req.encode(buffer, 0);

        // Then
        byte[] pathBytes = unicodePath.getBytes(StandardCharsets.UTF_16LE);

        // Verify Unicode path is preserved
        byte[] actualPath = new byte[pathBytes.length];
        System.arraycopy(buffer, Smb2Constants.SMB2_HEADER_LENGTH + 8, actualPath, 0, pathBytes.length);
        assertArrayEquals(pathBytes, actualPath);
    }

        } catch (final IOException e) {
            throw new IORuntimeException(e);
        }
    }

    /**
     * Returns a {@link URLConnection} object that represents a connection to the remote object referred to by the URL.
     *
     * @param url
     *            The URL. Must not be {@literal null}.
     * @return A {@link URLConnection} object to the URL.
     */