}

    @Test
    @DisplayName("Should read valid structure from wire format")
    void testReadBytesWireFormatValidStructure() throws SMBProtocolDecodingException {
        // Given
        byte[] buffer = new byte[256];
        int offset = 10;

        // Write valid structure (16 bytes)
        SMBUtil.writeInt2(16, buffer, offset); // Structure size
        buffer[offset + 2] = (byte) 0x01; // Share type (DISK)

        @Test
        @DisplayName("Should read valid structure with size 4")
        void testReadBytesWireFormatValidStructure() throws SMBProtocolDecodingException {
            // Given
            byte[] buffer = new byte[10];
            int bufferIndex = 0;
            SMBUtil.writeInt2(4, buffer, bufferIndex); // Write structure size = 4
            SMBUtil.writeInt2(0, buffer, bufferIndex + 2); // Reserved field

        assertEquals(0, bytesWritten);
    }

    @Test
    @DisplayName("Should handle error response structure size 9")
    void testReadBytesWireFormatErrorResponse() throws Exception {
        // Given
        byte[] buffer = new byte[256];
        int bufferIndex = 0;

        // Write structure size (9) - indicates error response
        SMBUtil.writeInt2(9, buffer, bufferIndex);

            int read = resp.readBytesWireFormat(buffer, start);

            // Assert
            assertEquals(4, read, "Should return the fixed structure size (4)");
        }

        @ParameterizedTest
        @ValueSource(ints = { 0, 1, 7 })
        @DisplayName("Throws when structure size is not 4")
        void throws_whenStructureSizeIsNotFour(int size) {
            // Arrange
            byte[] buffer = new byte[2];

            assertArrayEquals(testFileId, Arrays.copyOfRange(buffer, 8, 24));

            // Verify total bytes written (structure + lock data)
            assertEquals(24 + 24, bytesWritten); // 24 for structure, 24 for lock
        }

        @Test
        @DisplayName("Should write request structure correctly with multiple locks")
        void testWriteBytesWireFormatMultipleLocks() {

            try {
                Pac pac = new Pac(pacData, keys);
                assertNotNull(pac.getServerSignature());
                assertNotNull(pac.getKdcSignature());
            } catch (PACDecodingException e) {
                // Expected due to invalid logon info structure
                assertNotNull(e.getMessage());
            }

    @Test
    @DisplayName("Test wire format structure matches SMB2 specification")
    void testWireFormatStructure() {
        byte[] buffer = new byte[256];
        Arrays.fill(buffer, (byte) 0xCC); // Fill with pattern to detect unwritten areas

        int written = request.writeBytesWireFormat(buffer, 0);

        // Verify structure according to SMB2 FLUSH specification
        // Structure Size (2 bytes) - should be 24

    @Test
    @DisplayName("Test readBytesWireFormat with valid structure size")
    void testReadBytesWireFormatValidStructureSize() throws Exception {
        response = new Smb2QueryDirectoryResponse(mockConfig, Smb2QueryDirectoryRequest.FILE_BOTH_DIRECTORY_INFO);

        byte[] buffer = new byte[512];
        int bufferIndex = 0;

        // Set structure size to 9 (valid)
        SMBUtil.writeInt2(9, buffer, bufferIndex);

        @Test
        @DisplayName("Should read valid structure with size 4")
        void testReadBytesWireFormatValid() throws SMBProtocolDecodingException {
            // Given
            byte[] buffer = new byte[10];
            int bufferIndex = 2;
            SMBUtil.writeInt2(4, buffer, bufferIndex); // Write structure size = 4
            SMBUtil.writeInt2(0, buffer, bufferIndex + 2); // Reserved field

        byte[] buffer = new byte[512];
        int offset = 0;

        // Set header start position for the response
        setHeaderStart(response, 64);

        // Write structure header (9 bytes)
        SMBUtil.writeInt2(9, buffer, offset); // Structure size
        SMBUtil.writeInt2(80 - 64, buffer, offset + 2); // Buffer offset (relative to header)
        SMBUtil.writeInt4(50, buffer, offset + 4); // Total length of notification data