}

        @Test
        @DisplayName("Should handle ciphers with maximum value")
        void testMaximumCipherValues() throws SMBProtocolDecodingException {
            int[] ciphers = { 0xFFFF, 0x0000, 0x7FFF };
            EncryptionNegotiateContext originalContext = new EncryptionNegotiateContext(mockConfig, ciphers);

            int encoded = originalContext.encode(buffer, 0);

    @DisplayName("Should support AES-256 cipher constants")
    void testAES256CipherConstants() {
        // Verify AES-256 constants are defined
        assertEquals(0x0003, Smb2EncryptionContext.CIPHER_AES_256_CCM, "AES-256-CCM constant should be defined");
        assertEquals(0x0004, Smb2EncryptionContext.CIPHER_AES_256_GCM, "AES-256-GCM constant should be defined");

        // Test creating context with AES-256 cipher IDs

        // recordType (2 bytes)
        src[srcIndex + 2] = 0x00;
        src[srcIndex + 3] = 0x20; // NB (0x0020)
        // recordClass (2 bytes)
        src[srcIndex + 4] = 0x00;
        src[srcIndex + 5] = 0x01; // IN (0x0001)
        // ttl (4 bytes)
        src[srcIndex + 6] = 0x00;
        src[srcIndex + 7] = 0x00;
        src[srcIndex + 8] = 0x00;
        src[srcIndex + 9] = 0x00;
        // rDataLength (2 bytes)

            this.createDisposition = FILE_OPEN;
        }

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

    /**

        assertNotNull(result);
        assertTrue(result.contains("FileNotifyInformation"));
        assertTrue(result.contains("nextEntry=0"));
        assertTrue(result.contains("action=0x0000")); // Hexdump.toHexString produces 4-char padded hex
        assertTrue(result.contains("file=null"));
    }

    @ParameterizedTest
    @DisplayName("Test decode with aligned next entry offsets")

    @ParameterizedTest
    @CsvSource({ "4, 257", // FILE_BASIC_INFO -> 0x0101
            "5, 258", // FILE_STANDARD_INFO -> 0x0102
            "20, 260" // FILE_ENDOFFILE_INFO -> 0x0104
    })
    void testWithDifferentInformationLevels(byte infoLevel, int expectedMappedValue) {
        when(mockFileInfo.getFileInformationLevel()).thenReturn(infoLevel);

        assertEquals(expectedHigh, buffer[offset + 3]);
    }

    private static Stream<Arguments> provideFidTestCases() {
        return Stream.of(Arguments.of(0x0000, (byte) 0x00, (byte) 0x00), Arguments.of(0x00FF, (byte) 0xFF, (byte) 0x00),
                Arguments.of(0xFF00, (byte) 0x00, (byte) 0xFF), Arguments.of(0xFFFF, (byte) 0xFF, (byte) 0xFF),
                Arguments.of(0x1234, (byte) 0x34, (byte) 0x12));
    }

    @Test

        byte[] data1 = { 0x00, 0x01, 0x02, 0x03 };
        assertEquals("00", Hexdump.toHexString(data1, 0, 2)); // 2 chars = 1 byte
        assertEquals("000", Hexdump.toHexString(data1, 0, 3)); // 3 chars = 1.5 bytes (rounds up to 2)
        assertEquals("0001", Hexdump.toHexString(data1, 0, 4)); // 4 chars = 2 bytes
        assertEquals("000102", Hexdump.toHexString(data1, 0, 6)); // 6 chars = 3 bytes

        assertArrayEquals(expectedDescrBytes, actualDescrBytes);

        // Verify level (0x0001)
        int descrEnd = 2 + expectedDescrBytes.length;
        assertEquals(0x01, dst[descrEnd]);
        assertEquals(0x00, dst[descrEnd + 1]);

        // Verify maxDataCount (16384)
        assertEquals(16384, SMBUtil.readInt2(dst, descrEnd + 2));

        final int start = di;
        int ch;
        final int strlen = str.length();

        for (int i = 0; di < dlim && i < strlen; i++) {
            ch = str.charAt(i);
            if (ch >= 0x0001 && ch <= 0x007F) {
                dst[di] = (byte) ch;
                di++;
            } else {
                if (ch > 0x07FF) {
                    if (dlim - di < 3) {
                        break;