* Used in SMB protocol operations to query disk space information from remote SMB shares.
 *
 * @author mbechler
 */
public interface AllocInfo extends FileSystemInformation {

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

    /**

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
package jcifs.internal.fscc;

import jcifs.Decodable;
import jcifs.internal.AllocInfo;
import jcifs.internal.SMBProtocolDecodingException;
import jcifs.internal.util.SMBUtil;

/**
 * Represents the FILE_FS_FULL_SIZE_INFORMATION structure used to query comprehensive file system size information.

 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
package jcifs.internal.fscc;

import jcifs.internal.AllocInfo;
import jcifs.internal.SMBProtocolDecodingException;
import jcifs.internal.util.SMBUtil;

/**
 * Represents the FILE_FS_SIZE_INFORMATION structure used to query file system size information.

import org.mockito.junit.jupiter.MockitoExtension;

/**
 * Tests for the {@link AllocInfo} interface.
 * Since {@code AllocInfo} only declares getters, the tests focus on
 * verifying that implementations honour the contract.
 */
@ExtendWith(MockitoExtension.class)
public class AllocInfoTest {

    @Mock
    AllocInfo mockAllocInfo;

    /**
     * Happy path – verifies that getters return the values supplied by the

            assertTrue(fullSizeInfo instanceof FileSystemInformation);

            // All should be AllocInfo
            assertTrue(smbInfo instanceof AllocInfo);
            assertTrue(sizeInfo instanceof AllocInfo);
            assertTrue(fullSizeInfo instanceof AllocInfo);
        }
    }

    @Nested
    @DisplayName("Performance and Boundary Tests")
    class PerformanceTests {

            buffer.putInt(2048);

            // When
            allocInfo.decode(buffer.array(), 0, 24);

            // Then
            assertEquals(5000L * 4 * 2048, allocInfo.getCapacity());
            assertEquals(2000L * 4 * 2048, allocInfo.getFree());
            assertEquals(FileSystemInformation.FS_SIZE_INFO, allocInfo.getFileSystemInformationClass());
        }

        @Test

            buffer.putInt(2048);

            // When
            allocInfo.decode(buffer.array(), 0, 32);

            // Then
            assertEquals(5000L * 4 * 2048, allocInfo.getCapacity());
            assertEquals(2000L * 4 * 2048, allocInfo.getFree());
            assertEquals(FileSystemInformation.FS_FULL_SIZE_INFO, allocInfo.getFileSystemInformationClass());
        }

        @Test

        final int start = bufferIndex;
        final AllocInfo inf = createInfo();
        if (inf != null) {
            bufferIndex += inf.decode(buffer, bufferIndex, getDataCount());
            this.info = inf;
        }
        return bufferIndex - start;
    }

    /**
     * @return
     */
    private AllocInfo createInfo() {
        AllocInfo inf;
        switch (this.informationLevel) {

 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
package jcifs.internal.fscc;

import jcifs.internal.AllocInfo;
import jcifs.internal.SMBProtocolDecodingException;
import jcifs.internal.util.SMBUtil;

/**
 * Represents the SMB_INFO_ALLOCATION information level used in SMB transaction requests.

    // information levels
    static final int SMB_INFO_ALLOCATION = 1;
    static final int SMB_QUERY_FS_SIZE_INFO = 0x103;
    static final int SMB_FS_FULL_SIZE_INFORMATION = 1007;

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

        @Override
        public long getCapacity() {