}

    // Supplies a range of normal and edge case values.
    private static Stream<Arguments> valueProvider() {
        return Stream.of(Arguments.of(0, 0L, 0L, 0L, 0L), // all zeros
                Arguments.of(1, 1L, 1L, 1L, 1L), // ones
                Arguments.of(123, 456L, 789L, 101112L, 131415L), // arbitrary positives

        assertArrayEquals(clientChallenge, Arrays.copyOfRange(resp, 16, 24), "Client challenge must be copied to last 8 bytes");
        assertFalse(Arrays.equals(new byte[24], resp), "Response must not be all zeros");
    }

    @Test
    @DisplayName("getLMv2Response(byte[]): empty client data allowed")
    void testGetLMv2Response_bytes_emptyClientData() {
        // Arrange

    }

    @Test
    @DisplayName("Should handle null file ID gracefully")
    void testNullFileId() {
        // Given
        byte[] nullFileId = new byte[16]; // All zeros
        Configuration config = mock(Configuration.class);
        when(config.getNotifyBufferSize()).thenReturn(8192);

        // When

            buf.writeOctetArray(contextHandle, 0, Math.min(contextHandle.length, 20));
            // Pad with zeros if context handle is shorter than 20 bytes
            for (int i = contextHandle.length; i < 20; i++) {
                buf.enc_ndr_small(0);
            }
        } else {
            // Write 20 zero bytes for null context handle
            for (int i = 0; i < 20; i++) {
                buf.enc_ndr_small(0);

    }

    @Override
    protected int writeDataWireFormat(final byte[] dst, int dstIndex) {
        final int start = dstIndex;
        dstIndex += this.info.encode(dst, dstIndex);

        /* 6 zeros observed with NT */
        SMBUtil.writeInt8(0L, dst, dstIndex);
        dstIndex += 6;

        /*
         * Also observed 4 byte alignment but we stick
         * with the default for jCIFS which is 2

        response = new Trans2QueryFSInformationResponse(config, FileSystemInformation.SMB_INFO_ALLOCATION);

        byte[] buffer = new byte[100];
        // Initialize buffer with zeros to avoid random data
        java.util.Arrays.fill(buffer, (byte) 0);

        // Set dataCount to 0 - but decode still runs
        setDataCount(response, 0);

    }

    @Test
    @DisplayName("Test getCapacity with zero values")
    void testGetCapacityWithZeroValues() throws SMBProtocolDecodingException {
        // Prepare test data with zeros
        byte[] buffer = new byte[22];

        // All zeros
        for (int i = 0; i < buffer.length; i++) {
            buffer[i] = 0;
        }

        // Decode

        SMBUtil.writeInt2(0x0302, buffer, 4);

        // Negotiate context count (0 for non-3.1.1)
        SMBUtil.writeInt2(0, buffer, 6);

        // Server GUID (16 bytes of zeros)
        // Already initialized to zeros

        // Capabilities
        SMBUtil.writeInt4(Smb2Constants.SMB2_GLOBAL_CAP_DFS, buffer, 24);

        // Max sizes (reasonable values)

        // Normalize each part (remove leading zeros)
        final String[] normalized = new String[8];
        for (int i = 0; i < 8; i++) {
            normalized[i] = parts[i].replaceFirst("^0+(?!$)", "");
            if (normalized[i].isEmpty()) {
                normalized[i] = "0";
            }
        }

        // Find longest sequence of consecutive zeros
        int longestStart = -1;

        trans2SetFileInfo = new Trans2SetFileInformation(config, TEST_FID, mockFileInfo);

        byte[] buffer = new byte[512];
        // Fill buffer with non-zero values to ensure padding writes zeros
        for (int i = 0; i < buffer.length; i++) {
            buffer[i] = (byte) 0xFF;
        }

        int written = trans2SetFileInfo.writeDataWireFormat(buffer, 0);