}

        @ParameterizedTest
        @DisplayName("Should read different oplock levels correctly")
        @ValueSource(bytes = { 0x00, 0x01, 0x02, 0x08, (byte) 0xFF })
        void testReadDifferentOplockLevels(byte oplockLevel) throws Exception {
            byte[] buffer = createValidOplockBreakBuffer(oplockLevel, createTestData(16));

        // Verify that flags are set correctly (DCERPC_FIRST_FRAG | DCERPC_LAST_FRAG)
        // The actual values for DCERPC_FIRST_FRAG and DCERPC_LAST_FRAG are typically 0x01 and 0x02 respectively.
        int expectedFlags = 0x01 | 0x02; // DCERPC_FIRST_FRAG | DCERPC_LAST_FRAG
        assertEquals(expectedFlags, msrpcSamrOpenDomain.getFlags(), "flags should be initialized to DCERPC_FIRST_FRAG | DCERPC_LAST_FRAG");

        // 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

    }

    @Override
    protected int readParameterWordsWireFormat(final byte[] buffer, int bufferIndex) {
        final int start = bufferIndex;
        this.isLoggedInAsGuest = ((buffer[bufferIndex] & 0x01) == 0x01) == true;
        bufferIndex += 2;
        if (this.isExtendedSecurity()) {
            final int blobLength = SMBUtil.readInt2(buffer, bufferIndex);
            bufferIndex += 2;

    @Test
    @DisplayName("Test with different buffer sizes")
    void testWithDifferentBufferSizes() {
        // Test with buffers of different sizes
        byte[] smallBuffer = new byte[] { 0x01 };
        byte[] mediumBuffer = new byte[] { 0x01, 0x02, 0x03, 0x04, 0x05 };

        SmbNegotiation negotiationDifferentSizes = new SmbNegotiation(mockRequest, mockResponse, smallBuffer, mediumBuffer);

        buffer.position(20);
        buffer.put((byte) 0x01); // Revision
        buffer.put((byte) 0x01); // SubAuthorityCount
        buffer.put(new byte[] { 0, 0, 0, 0, 0, 1 }); // IdentifierAuthority
        buffer.putInt(0); // SubAuthority

        // Group SID at offset 40
        buffer.position(40);
        buffer.put((byte) 0x01); // Revision
        buffer.put((byte) 0x01); // SubAuthorityCount

        // Set up the buffer with test data
        // sid (2 bytes)
        buffer[0] = 0x01;
        buffer[1] = 0x00;
        // numEntries (2 bytes)
        buffer[2] = 0x05;
        buffer[3] = 0x00;
        // isEndOfSearch (2 bytes, bit 0 of first byte)
        buffer[4] = 0x01; // end of search = true
        buffer[5] = 0x00;
        // eaErrorOffset (2 bytes)
        buffer[6] = 0x00;

import jcifs.smb1.util.Hexdump;

class SmbComOpenAndX extends AndXServerMessageBlock {

    // flags (not the same as flags constructor argument)
    private static final int FLAGS_RETURN_ADDITIONAL_INFO = 0x01;
    private static final int FLAGS_REQUEST_OPLOCK = 0x02;
    private static final int FLAGS_REQUEST_BATCH_OPLOCK = 0x04;

    // Access Mode Encoding for desiredAccess

    /**
     * No flags set in SMB header.
     */
    int FLAGS_NONE = 0x00;
    /**
     * Obsolete lock and read/write and unlock flag.
     */
    int FLAGS_LOCK_AND_READ_WRITE_AND_UNLOCK = 0x01;
    /**
     * Receive buffer has been posted flag.
     */
    int FLAGS_RECEIVE_BUFFER_POSTED = 0x02;
    /**
     * Path names are case-insensitive flag.
     */
    int FLAGS_PATH_NAMES_CASELESS = 0x08;

                (byte) 0x67, (byte) 0x45, (byte) 0x23, (byte) 0x01
              },
              0x89abcdef,
              0x0123456789abcdefL,
              "efcdab8967452301"),
          new ExpectedHashCode(
              new byte[] {
                (byte) 0xef, (byte) 0xcd, (byte) 0xab, (byte) 0x89,
                (byte) 0x67, (byte) 0x45, (byte) 0x23,
                    (byte) 0x01, // up to here, same bytes as above