private CommonServerMessageBlock message;

    private byte[] testData;

    @BeforeEach
    void setUp() {
        MockitoAnnotations.openMocks(this);
        testData = new byte[] { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08 };
    }

    @Test
    @DisplayName("Test sign method with valid parameters")
    void testSignWithValidParameters() {
        // Arrange
        int offset = 0;

    class ToStringTests {

        @ParameterizedTest
        @DisplayName("Should format command name correctly")
        @ValueSource(shorts = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10, 0x11,
                0x12 })
        void testToStringCommandNames(short command) {
            testMessage.setCommand(command);

     */
    @Test
    @DisplayName("Test byte array fields (encryptionKey and guid)")
    public void testByteArrayFields() {
        // Test encryptionKey
        byte[] key = new byte[] { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08 };
        serverData.encryptionKey = key;
        assertNotNull(serverData.encryptionKey);
        assertArrayEquals(key, serverData.encryptionKey);

        // Test with empty array

    void testFileInformationConstantsMatchProtocol() {
        // These values are defined in MS-FSCC specification
        assertEquals(0x04, FileInformation.FILE_BASIC_INFO);
        assertEquals(0x05, FileInformation.FILE_STANDARD_INFO);
        assertEquals(0x06, FileInformation.FILE_INTERNAL_INFO);
        assertEquals(10, FileInformation.FILE_RENAME_INFO);
        assertEquals(20, FileInformation.FILE_ENDOFFILE_INFO);

    void testSubcommandConstants() {
        // Test Trans2 subcommands
        assertEquals((byte) 0x01, SmbComTransaction.TRANS2_FIND_FIRST2);
        assertEquals((byte) 0x02, SmbComTransaction.TRANS2_FIND_NEXT2);
        assertEquals((byte) 0x03, SmbComTransaction.TRANS2_QUERY_FS_INFORMATION);
        assertEquals((byte) 0x05, SmbComTransaction.TRANS2_QUERY_PATH_INFORMATION);

    private static final int PRIMARY_SETUP_OFFSET = 61;
    private static final int SECONDARY_PARAMETER_OFFSET = 51;

    static final int DISCONNECT_TID = 0x01;
    static final int ONE_WAY_TRANSACTION = 0x02;

    static final int PADDING_SIZE = 4;

    private final int tflags = 0x00;
    private int pad1 = 0;
    private int pad2 = 0;
    private boolean hasMore = true;
    private boolean isPrimary = true;

    private Smb2SessionSetupRequest request;

    // Test constants
    private static final int TEST_SECURITY_MODE = 0x01;
    private static final int TEST_CAPABILITIES = 0x00000001;
    private static final long TEST_PREVIOUS_SESSION_ID = 0x1234567890ABCDEFL;
    private static final byte[] TEST_TOKEN = { 0x01, 0x02, 0x03, 0x04, 0x05 };

    @BeforeEach
    void setUp() {
        mockConfig = mock(Configuration.class);

            byte[] b = inv.getArgument(0);
            int off = inv.getArgument(1);
            b[off] = 0x01;
            b[off + 1] = 0x02;
            b[off + 2] = 0x03;
            b[off + 3] = 0x04;
            b[off + 4] = 0x05;
            b[off + 5] = 0x06;
            b[off + 6] = 0x07;
            b[off + 7] = 0x08;
            return 8;
        }).when(raf).read(any(byte[].class), anyInt(), eq(8));

    static final byte TRANS2_FIND_FIRST2 = (byte) 0x01;
    static final byte TRANS2_FIND_NEXT2 = (byte) 0x02;
    static final byte TRANS2_QUERY_FS_INFORMATION = (byte) 0x03;
    static final byte TRANS2_QUERY_PATH_INFORMATION = (byte) 0x05;
    static final byte TRANS2_GET_DFS_REFERRAL = (byte) 0x10;
    static final byte TRANS2_SET_FILE_INFORMATION = (byte) 0x08;

    static final int NET_SHARE_ENUM = 0x0000;

        // Tag [1] IMPLICIT, content is 0x01 0x02 0x03
        byte[] data = new byte[] { (byte) 0xA1, 0x03, 0x01, 0x02, 0x03 };
        ByteArrayInputStream bais = new ByteArrayInputStream(data);
        ASN1InputStream ais = new ASN1InputStream(bais);
        byte[] result = ASN1Util.readUnparsedTagged(1, 10, ais);
        assertArrayEquals(new byte[] { 0x01, 0x02, 0x03 }, result);
    }

    @Test