SmbComLockingAndX cmd = new SmbComLockingAndX(cfg);
        // set fields via reflection
        setField(cmd, "fid", 0x1234);
        setField(cmd, "typeOfLock", (byte) 0x05);
        setField(cmd, "newOpLockLevel", (byte) 0x01);
        setField(cmd, "timeout", 3000L);
        // arrays of one lock and one unlock range
        LockingAndXRange lock = new LockingAndXRange(false);

    }

    /**
     * Test constructor with a malformed token.
     */
    @Test
    void testConstructorMalformed() {
        byte[] malformedToken = new byte[] { 0x01, 0x02, 0x03, 0x04 };
        assertThrows(PACDecodingException.class, () -> new KerberosEncData(malformedToken, Collections.emptyMap()));
    }

    /**
     * Test constructor with an unknown field.
     *

            buffer[0] = 0x10;
            buffer[1] = 0x00;
            // Share type (DISK)
            buffer[2] = Smb2TreeConnectResponse.SMB2_SHARE_TYPE_DISK;
            // Reserved
            buffer[3] = 0;
            // Share flags (DFS)
            buffer[4] = 0x01;
            buffer[5] = 0x00;
            buffer[6] = 0x00;
            buffer[7] = 0x00;
            // Capabilities (DFS)

 */
@DisplayName("Type2Message Comprehensive Tests")
class Type2MessageTest {

    private static final byte[] TEST_CHALLENGE = new byte[] { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08 };
    private static final String TEST_TARGET = "TEST_TARGET";
    private static final String TEST_DOMAIN = "TEST_DOMAIN";
    private static final String TEST_HOSTNAME = "TEST_HOSTNAME";

    /**

     * Inheritance flag: child objects inherit this ACE
     */
    int FLAGS_OBJECT_INHERIT = 0x01;
    /**
     * Inheritance flag: child containers inherit this ACE
     */
    int FLAGS_CONTAINER_INHERIT = 0x02;
    /**
     * Inheritance flag: inheritance stops after one level
     */
    int FLAGS_NO_PROPAGATE = 0x04;
    /**
     * Inheritance flag: ACE applies only to children, not to the object itself
     */

    static final int FILE_SYNCHRONOUS_IO_ALERT = 0x00000010;
    static final int FILE_SYNCHRONOUS_IO_NONALERT = 0x00000020;

    // security flags
    static final int SECURITY_CONTEXT_TRACKING = 0x01;
    static final int SECURITY_EFFECTIVE_ONLY = 0x02;

    private int rootDirectoryFid;

    private final int extFileAttributes;

    private final int shareAccess;

    private int createDisposition;

        }
    }

    /* --- flag handling -------------------------------- */
    @Test
    void testFlagSetAndUnset() {
        TestMessage m = new TestMessage();
        int FLAG_A = 0x01;
        int FLAG_B = 0x02;
        assertFalse(m.isFlagSet(FLAG_A));
        m.setFlag(FLAG_A);
        assertTrue(m.isFlagSet(FLAG_A));
        // unset correctly removes the flag
        m.unsetFlag(FLAG_A);

        dstIndex += 4;
        SMBUtil.writeInt2(this.fid, dst, dstIndex);
        dstIndex += 2;
        dst[dstIndex] = this.watchTree ? (byte) 0x01 : (byte) 0x00; // watchTree
        dstIndex++;
        dst[dstIndex++] = (byte) 0x00; // Reserved
        return dstIndex - start;
    }

    /**
     * {@inheritDoc}
     *

        return Stream.of(Arguments.of("SERVER", 0x20, "CLIENT", 0x00), Arguments.of("WORKSTATION", 0x00, "USER", 0x03),
                Arguments.of("DOMAIN", 0x1B, "BROWSER", 0x1D), Arguments.of("A", 0x20, "B", 0x00),
                Arguments.of("VERYLONGNAMETEST", 0x20, "ANOTHERLONGNAME", 0x00));
    }

    @Test
    @DisplayName("writeTrailerWireFormat should handle different buffer offsets")

    void byteArrayConstructor_malformedDER_throwsWrapped() {
        // Arrange: Truncated SEQUENCE (0x30 len=2 but only 1 byte of content)
        byte[] malformed = new byte[] { 0x30, 0x02, 0x01 };

        // Act + Assert
        PACDecodingException ex = assertThrows(PACDecodingException.class, () -> new KerberosApRequest(malformed, null));
        assertTrue(ex.getMessage().contains("Malformed Kerberos Ticket"));