assertEquals(1000, info.alloc);
        assertEquals(500, info.free);
        assertEquals(100, info.sectPerAlloc);
        assertEquals(512, info.bytesPerSect);
        assertEquals(1000L * 100 * 512, info.getCapacity(), "Capacity calculation should be correct");
        assertEquals(500L * 100 * 512, info.getFree(), "Free space calculation should be correct");
    }

    /**

 *
 * @author mbechler
 */
public interface AllocInfo extends FileSystemInformation {

    /**
     * Gets the total capacity of the allocation.
     *
     * @return total capacity
     */
    long getCapacity();

    /**
     * Gets the free space available.
     *
     * @return free space
     */
    long getFree();

     */
    @Override
    public byte getFileSystemInformationClass() {
        return FileSystemInformation.SMB_INFO_ALLOCATION;
    }

    @Override
    public long getCapacity() {
        return this.alloc * this.sectPerAlloc * this.bytesPerSect;
    }

    @Override
    public long getFree() {
        return this.free * this.sectPerAlloc * this.bytesPerSect;
    }

    /**

        assertEquals(50, ndrBuffer.getIndex());
    }

    @Test
    void testGetCapacity() {
        assertEquals(buffer.length, ndrBuffer.getCapacity());

        NdrBuffer offsetBuffer = new NdrBuffer(buffer, 100);
        assertEquals(buffer.length - 100, offsetBuffer.getCapacity());
    }

    @Test
    void testGetTailSpace() {
        ndrBuffer.setIndex(100);

    class SmbInfoAllocation implements AllocInfo {
        long alloc; // Also handles SmbQueryFSSizeInfo
        long free;
        int sectPerAlloc;
        int bytesPerSect;

        @Override
        public long getCapacity() {
            return alloc * sectPerAlloc * bytesPerSect;
        }

        @Override
        public long getFree() {
            return free * sectPerAlloc * bytesPerSect;
        }

        @Override

    public void setIndex(final int index) {
        this.index = index;
    }

    /**
     * Returns the capacity of the buffer.
     *
     * @return the buffer capacity
     */
    public int getCapacity() {
        return buf.length - start;
    }

    /**
     * Returns the available space at the tail of the buffer.
     *
     * @return the available tail space
     */

    public void setIndex(final int index) {
        this.index = index;
    }

    /**
     * Returns the capacity of the buffer.
     *
     * @return the buffer capacity
     */
    public int getCapacity() {
        return this.buf.length - this.start;
    }

    /**
     * Returns the available space at the tail of the buffer.
     *
     * @return the available tail space
     */

            response = new Trans2QueryFSInformationResponse(level);
            send(new Trans2QueryFSInformation(level), response);

            size = response.info.getCapacity();
        } else if (getUncPath0().length() > 1 && type != TYPE_NAMED_PIPE) {
            final Info info = queryPath(getUncPath0(), Trans2QueryPathInformationResponse.SMB_QUERY_FILE_STANDARD_INFO);

        }

        try (SmbTreeHandleImpl th = ensureTreeConnected()) {
            final int t = getType();
            if (t == TYPE_SHARE) {
                this.size = fetchAllocationInfo(th).getCapacity();
            } else if (!this.fileLocator.isRoot() && t != TYPE_NAMED_PIPE) {
                queryPath(th, this.fileLocator.getUNCPath(), FileInformation.FILE_STANDARD_INFO);
            } else {