// Verify first chunk
            assertEquals(100L, SMBUtil.readInt8(buffer, 0));
            assertEquals(200L, SMBUtil.readInt8(buffer, 8));
            assertEquals(300, SMBUtil.readInt4(buffer, 16));

            // Verify second chunk
            assertEquals(400L, SMBUtil.readInt8(buffer, EXPECTED_SIZE));
            assertEquals(500L, SMBUtil.readInt8(buffer, EXPECTED_SIZE + 8));

            // Verify first lock
            assertEquals(100L, SMBUtil.readInt8(buffer, 0));
            assertEquals(200L, SMBUtil.readInt8(buffer, 8));
            assertEquals(1, SMBUtil.readInt4(buffer, 16));

            // Verify second lock
            assertEquals(300L, SMBUtil.readInt8(buffer, 24));
            assertEquals(400L, SMBUtil.readInt8(buffer, 32));
            assertEquals(2, SMBUtil.readInt4(buffer, 40));

        assertEquals(0x123456789ABCDEF0L, SMBUtil.readInt8(src, 0));
        assertEquals(0xFFFFFFFFFFFFFFFFL, SMBUtil.readInt8(src, 8));
        assertEquals(0x0000000000000000L, SMBUtil.readInt8(src, 16));
    }

    @Test
    void testWriteInt8() {
        byte[] dst = new byte[24];

        // Test with specific value

            assertEquals(0L, SMBUtil.readInt8(buffer, offset));
            assertEquals(1024L, SMBUtil.readInt8(buffer, offset + 8));
            assertEquals(4096, SMBUtil.readInt4(buffer, offset + 16));

            offset += CHUNK_SIZE;
            assertEquals(4096L, SMBUtil.readInt8(buffer, offset));
            assertEquals(5120L, SMBUtil.readInt8(buffer, offset + 8));

        bufferIndex += 8;
        extFileAttributes = readInt4(buffer, bufferIndex);
        bufferIndex += 4;
        allocationSize = readInt8(buffer, bufferIndex);
        bufferIndex += 8;
        endOfFile = readInt8(buffer, bufferIndex);
        bufferIndex += 8;
        fileType = readInt2(buffer, bufferIndex);
        bufferIndex += 2;
        deviceState = readInt2(buffer, bufferIndex);

    public int decode(final byte[] buffer, int bufferIndex, final int len) throws SMBProtocolDecodingException {
        final int start = bufferIndex;
        this.alloc = SMBUtil.readInt8(buffer, bufferIndex);
        bufferIndex += 8;

        this.free = SMBUtil.readInt8(buffer, bufferIndex);
        bufferIndex += 8;

        this.sectPerAlloc = SMBUtil.readInt4(buffer, bufferIndex);
        bufferIndex += 4;

            assertEquals(2, buffer[2]); // Padding
            assertEquals(0x01, buffer[3]); // Read flags
            assertEquals(4096, SMBUtil.readInt4(buffer, 4)); // Read length
            assertEquals(8192L, SMBUtil.readInt8(buffer, 8)); // Offset
            assertArrayEquals(testFileId, Arrays.copyOfRange(buffer, 16, 32)); // File ID
            assertEquals(512, SMBUtil.readInt4(buffer, 32)); // Minimum count

        int bytesEncoded = fileInternalInfo.encode(destinationBuffer, 0);

        // Verify
        assertEquals(8, bytesEncoded);
        assertEquals(expectedIndexNumber, SMBUtil.readInt8(destinationBuffer, 0));
    }

    @Test
    @DisplayName("Test encode with buffer offset")
    void testEncodeWithBufferOffset() throws SMBProtocolDecodingException {
        // First decode to set internal state

        final int start = bufferIndex;

        // Read total allocation units.
        this.alloc = SMBUtil.readInt8(buffer, bufferIndex);
        bufferIndex += 8;

        // read caller available allocation units
        this.free = SMBUtil.readInt8(buffer, bufferIndex);
        bufferIndex += 8;

        // skip actual free units
        bufferIndex += 8;

            assertEquals(49, SMBUtil.readInt2(buffer, headerStart)); // Structure size
            assertEquals(data.length, SMBUtil.readInt4(buffer, headerStart + 4)); // Data length
            assertEquals(1024L, SMBUtil.readInt8(buffer, headerStart + 8)); // Offset
            assertArrayEquals(testFileId, Arrays.copyOfRange(buffer, headerStart + 16, headerStart + 32)); // File ID