long expectedCapacity = alloc * sectPerAlloc * bytesPerSect;
        assertEquals(expectedCapacity, smbInfoAllocation.getCapacity());

        // Verify free space calculation: free * sectPerAlloc * bytesPerSect
        long expectedFree = free * sectPerAlloc * bytesPerSect;
        assertEquals(expectedFree, smbInfoAllocation.getFree());
    }

    @Test

                throws SMBProtocolDecodingException {
            // Given
            ByteBuffer buffer = ByteBuffer.allocate(24);
            buffer.order(ByteOrder.LITTLE_ENDIAN);
            buffer.putLong(alloc);
            buffer.putLong(free);
            buffer.putInt(sectPerAlloc);
            buffer.putInt(bytesPerSect);
            byte[] bufferArray = buffer.array();

            buffer.putInt(sectPerAlloc);
            buffer.putInt(bytesPerSect);
            byte[] bufferArray = buffer.array();

            // When
            int bytesConsumed = fileFsFullSizeInfo.decode(bufferArray, 0, bufferArray.length);

            // Then
            assertEquals(32, bytesConsumed);
            assertEquals(alloc * sectPerAlloc * bytesPerSect, fileFsFullSizeInfo.getCapacity());

            buffer[8] = 0x00;
            buffer[9] = 0x10; // alloc = 4096
            buffer[12] = 0x00;
            buffer[13] = 0x08; // free = 2048
            buffer[16] = 0x00;
            buffer[17] = 0x02; // bytesPerSect = 512

            int bytesDecoded = smbInfoAllocation.decode(buffer, 0, buffer.length);

            assertEquals(20, bytesDecoded);
            assertEquals(8L * 4096L * 512L, smbInfoAllocation.getCapacity());

        SMBUtil.writeInt4(1000000, buffer, offset);
        offset += 4;

        // free (4 bytes)
        SMBUtil.writeInt4(500000, buffer, offset);
        offset += 4;

        // bytesPerSect (2 bytes + 2 padding)
        SMBUtil.writeInt2(512, buffer, offset);
        offset += 4;

        // Set dataCount using reflection
        setDataCount(response, offset);