@DisplayName("Test flags2 property")
        void testFlags2Property() {
            testBlock.setFlags2(0x1234);
            assertEquals(0x1234, testBlock.getFlags2());

            testBlock.addFlags2(0x0001);
            assertEquals(0x1235, testBlock.getFlags2());

            testBlock.remFlags2(0x0200);
            assertEquals(0x1035, testBlock.getFlags2());
        }

        @Test

        assertTrue(str.contains("name=test.txt"), "The file name should appear");
        // securityFlags are set to 0x03 – verify hex sequence
        assertTrue(str.contains("securityFlags=0x03"), "securityFlags should be present");
    }

    /**
     * Fetch a private field value via reflection.  This helper keeps the

  public void testCollisionsDueToIncorrectSignExtension() {
    byte[] col1 = new byte[] {0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, (byte) 0x80};
    byte[] col2 = new byte[] {0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, (byte) 0x81};
    byte[] col3 = new byte[] {0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, (byte) 0xff};

    ImmutableSet<HashCode> hashCodes =
        ImmutableSet.of(

            createDisposition = FILE_OPEN;
        }

        if ((createOptions & 0x0001) == 0) {
            this.createOptions = createOptions | 0x0040;
        } else {
            this.createOptions = createOptions;
        }
        impersonationLevel = 0x02; // As seen on NT :~)
        securityFlags = (byte) 0x03; // SECURITY_CONTEXT_TRACKING | SECURITY_EFFECTIVE_ONLY
    }

    @Override

        byte[] wireData = new byte[] { 0x10, 0x00, // StructureSize (must be 16)
                0x01, // ShareType (DISK)
                0x00, // Reserved
                0x01, 0x00, 0x00, 0x00, // ShareFlags
                0x08, 0x00, 0x00, 0x00, // Capabilities
                (byte) 0xFF, 0x01, 0x1F, 0x00 // MaximalAccess
        };

        // When

    }

    /**
     * Test constructor with a malformed ASN.1 token.
     */
    @Test
    void testConstructor_MalformedToken() {
        // 1. GIVEN
        byte[] malformedToken = new byte[] { 0x00, 0x01, 0x02, 0x03 }; // Not a valid ASN.1 sequence
        Map<Integer, KerberosKey> keys = new HashMap<>();

        // 2. WHEN & 3. THEN
        PACDecodingException exception = assertThrows(PACDecodingException.class, () -> {

        assertEquals((byte) 0x04, buf[4]);
        assertEquals((byte) 0x01, buf[5]);
    }

    /**
     * Ensures writeSetupWireFormat writes subcommand and trailing zero, returning 2.
     */
    @Test
    void testWriteSetupWireFormat() {
        // Given
        Trans2FindNext2 next = new Trans2FindNext2(0x1111, 0, "*");
        byte[] dst = new byte[2];

        // When

            dst[dstIndex] = (byte) 0x01;
        }
        dstIndex++;
        writeInt2(this.length, dst, dstIndex);
        return HEADER_LENGTH;
    }

    int readHeaderWireFormat(final InputStream in, final byte[] buffer, int bufferIndex) {
        this.type = buffer[bufferIndex] & 0xFF;
        bufferIndex++;
        this.length = ((buffer[bufferIndex] & 0x01) << 16) + readInt2(buffer, bufferIndex + 1);

        smb.mid = 123;
        smb.pid = 456;
        smb.tid = 789;
        smb.uid = 101;
        smb.flags2 = ServerMessageBlock.FLAGS2_UNICODE;
        smb.useUnicode = true;

        byte[] params = { 0x01, 0x02, 0x03, 0x04 };
        byte[] bytes = { 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F };
        smb.setParamWords(params);
        smb.setBytes(bytes);

        byte[] buffer = new byte[1024];

 * Tests all constructors, parsing, and serialization functionality.
 */
@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";