assertEquals(0, encodedSize % 8, "Encoded size should be 8-byte aligned for name length " + nameLen);
            }
        }

        @ParameterizedTest
        @ValueSource(ints = { 0, 10, 50, 100, 200 })
        @DisplayName("Should handle various buffer offsets")
        void testVariousBufferOffsets(int offset) {
            byte[] largeBuffer = new byte[512];

        assertTrue(s.contains("Trans2GetDfsReferral["));
        assertTrue(s.contains("filename=/bar"));
        assertTrue(s.contains("maxReferralLevel=0x3"));
    }

    @ParameterizedTest
    @ValueSource(ints = { 0, 5, -1, 65534 })
    @DisplayName("referral level variations")
    void testLevels(int level) throws Exception {
        Trans2GetDfsReferral cmd = new Trans2GetDfsReferral("foo");

        assertTrue(result.startsWith("00010203"));
        assertEquals(64, result.length()); // 32 bytes * 2 chars per byte
    }

    @ParameterizedTest
    @ValueSource(ints = { 1, 16, 32, 64, 128, 256 })
    @DisplayName("Should handle various data sizes")
    void testVariousDataSizes(int size) {
        // Given
        byte[] data = createTestData(size);

        // When

            startLatch.countDown();
            assertTrue(endLatch.await(1, TimeUnit.SECONDS));
            assertTrue(response.isError());
        }
    }

    @ParameterizedTest
    @ValueSource(ints = { NtStatus.NT_STATUS_SUCCESS, NtStatus.NT_STATUS_PENDING, NtStatus.NT_STATUS_ACCESS_DENIED,
            NtStatus.NT_STATUS_INVALID_PARAMETER })
    @DisplayName("Should handle various status codes")

            0x00001040, 0x00001040, 0x00040040, 0x10000000, 0x10041000 };

    /// Squash bytes down to ints.
    /**
     * Converts bytes to integers for internal DES processing
     * @param inBytes the input byte array
     * @param inOff the offset into the input array
     * @param outInts the output integer array

        // Act
        int actual = req.size();

        // Assert
        assertEquals(expected, actual, "size() must be 8-byte aligned");
    }

    @ParameterizedTest
    @ValueSource(ints = { 0, 1, 5 })
    @DisplayName("writeBytesWireFormat writes StructureSize=4 and Reserved=0 at given offset")
    void writeBytesWireFormat_writesExpectedValuesAtOffset(int offset) {
        // Arrange

        assertEquals(0x34, buffer[1] & 0xFF);
        assertEquals(0x56, buffer[2] & 0xFF);
        assertEquals(0x78, buffer[3] & 0xFF);
    }

    @ParameterizedTest
    @ValueSource(ints = { 0, 1, 255, 256, 65535, 65536, Integer.MAX_VALUE })
    @DisplayName("Should handle boundary values")
    void testBoundaryValues(int value) {
        // Given
        byte[] buffer = new byte[4];

        // When

     * - Negative values with 0xC0000000 bits set are returned as-is
     * - Positive values not in DOS_ERROR_CODES map to NT_STATUS_UNSUCCESSFUL
     */
    @ParameterizedTest
    @ValueSource(ints = { 0, 1, 123, -7 })
    void testGetNtStatusVariousCodes(int errcode) {
        SmbException ex = new SmbException(errcode, false);
        int expected;
        if (errcode == 0) {
            expected = 0;

        assertEquals("Payload exceeds buffer size", exception.getMessage());
    }

    @ParameterizedTest
    @ValueSource(ints = { 0, 1, 10, 100, 500, 1024 })
    void testReadDataWireFormatVariousSizes(int dataSize) throws SMBProtocolDecodingException {
        // Test with various data sizes within buffer limit

        // Valid inputs: each known code must map to its documented message
        assertEquals(expectedMessage, lookupMessage(code).orElse(null));
    }

    @ParameterizedTest
    @ValueSource(ints = { -1, Integer.MIN_VALUE, Integer.MAX_VALUE })
    @DisplayName("Unknown codes: lookup returns empty Optional")
    void lookup_returns_empty_for_unknown_codes(int unknownCode) {