assertEquals("Cp850", SmbConstants.DEFAULT_OEM_ENCODING);
        assertEquals(-1, SmbConstants.FOREVER);
    }

    @Test
    @DisplayName("Should validate flag combinations work correctly")
    void testFlagCombinations() {
        // Test that flags can be combined with bitwise OR
        int combinedShareAccess = SmbConstants.FILE_SHARE_READ | SmbConstants.FILE_SHARE_WRITE;
        assertEquals(0x03, combinedShareAccess);

        assertEquals(smb.flags, readSmb.flags);
        assertEquals(smb.flags2, readSmb.flags2);
        assertEquals(smb.tid, readSmb.tid);
        assertEquals(smb.pid, readSmb.pid);
        assertEquals(smb.uid, readSmb.uid);
        assertEquals(smb.mid, readSmb.mid);
    }

    @Test
    void testIsResponse() {
        smb.flags = (byte) ServerMessageBlock.FLAGS_RESPONSE;

    /**
     * Checks if a specific flag is set
     * @param flag the flag to check
     * @return true if the flag is set, false otherwise
     */
    public boolean isFlagSet(final int flag) {
        return (flags & flag) == flag;
    }

    /**
     * Unsets a specific flag
     * @param flag the flag to unset
     */
    public void unsetFlag(final int flag) {
        flags &= ~flag;
    }

    /**

    }

    /**
     * Verifies reset() clears flags2 and updates resumeKey and filename used for parameters.
     */
    @Test
    void testResetUpdatesStateAndParameters() {
        // Given
        Trans2FindNext2 next = new Trans2FindNext2(0x0001, 0x0AAA0BBB, "old");
        next.flags2 = 0xFFFF; // simulate non-zero flags2

        // When
        next.reset(0x11121314, "last.dat");

        this.extFileAttributes = extFileAttributes;

        // shareAccess
        this.shareAccess = shareAccess;

        // createDisposition
        if ((flags & SmbFile.O_TRUNC) == SmbFile.O_TRUNC) {
            // truncate the file
            if ((flags & SmbFile.O_CREAT) == SmbFile.O_CREAT) {
                // create it if necessary
                createDisposition = FILE_OVERWRITE_IF;
            } else {

        this.flags = flags;
    }

    /**
     * Returns the status of the specified flag.
     *
     * @param flag The flag to test (i.e., <code>NTLMSSP_NEGOTIATE_OEM</code>).
     * @return A <code>boolean</code> indicating whether the flag is set.
     */
    public boolean getFlag(final int flag) {
        return (getFlags() & flag) != 0;
    }

    /**
     * Sets or clears the specified flag.
     *

            // Check that no two flags overlap (except combined flags)
            for (int i = 0; i < flags.length; i++) {
                for (int j = i + 1; j < flags.length; j++) {
                    assertEquals(0, flags[i] & flags[j], String.format("Flags at index %d and %d should not overlap", i, j));
                }
            }
        }
    }

        for (int flag : new int[] { 0, 0xFF, 0x01, 0x80 }) {
            TestMessage m = new TestMessage();
            m.ptype = 0;
            m.flags = flag;

            NdrBuffer buf = new NdrBuffer(new byte[1024], 0);
            m.encode(buf);

            // Reset and skip to flags field
            buf.setIndex(3);
            assertEquals(flag, buf.dec_ndr_small());
        }
    }

        @DisplayName("Should encode consistently with various flag values")
        @ValueSource(ints = { 0, 1, 2, 4, 16, 0xFF, 0xFFFF, 0xFFFFFF, 0x7FFFFFFF, -1 })
        void testEncodingWithVariousFlags(int flags) {
            lock = new Smb2Lock(1024L, 2048L, flags);
            int encoded = lock.encode(buffer, 0);

            assertEquals(24, encoded);
            assertEquals(flags, SMBUtil.readInt4(buffer, 16));
        }

    void testType1MessageWithFlags() {
        // Given
        int flags =
                NtlmFlags.NTLMSSP_NEGOTIATE_UNICODE | NtlmFlags.NTLMSSP_NEGOTIATE_NTLM | NtlmFlags.NTLMSSP_NEGOTIATE_OEM_DOMAIN_SUPPLIED;

        // When
        Type1Message type1 = new Type1Message(mockContext, flags, null, null);

        // Then
        // Note: Constructor sets default flags OR'd with provided flags