*
     * @param data the data to compress
     * @param algorithm the compression algorithm to use
     * @return the compressed data
     * @throws CIFSException if compression fails
     */
    byte[] compress(byte[] data, int algorithm) throws CIFSException;

    /**
     * Compresses data using the specified algorithm with offset and length.
     *
     * @param data the data buffer

     *
     * @param other the other resource locator to compare with
     * @return whether the paths share a common root
     * @throws CIFSException if an error occurs during comparison
     */
    boolean overlaps(SmbResourceLocator other) throws CIFSException;

    /**
     * Internal: for testing only
     *
     * @param dr the DFS referral data to process
     * @param reqPath the requested path to resolve

     * @return subject associated with the credentials
     */
    Subject getSubject();

    /**
     * Refresh the credentials.
     * @throws CIFSException if refresh fails
     */
    void refresh() throws CIFSException;

    }

    /**
     * Test that NbtException can be caught as a CIFSException.
     */
    @Test
    @DisplayName("NbtException should be catchable as CIFSException")
    void testCatchableAsCIFSException() {
        try {
            throw new NbtException(NbtException.ERR_NAM_SRVC, NbtException.FMT_ERR);
        } catch (CIFSException e) {

import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;
import org.mockito.Mock;

import jcifs.BaseTest;
import jcifs.BufferCache;
import jcifs.CIFSException;
import jcifs.Configuration;
import jcifs.DfsResolver;
import jcifs.NameServiceClient;
import jcifs.SidResolver;
import jcifs.SmbPipeResource;
import jcifs.SmbResource;
import jcifs.SmbTransportPool;

                        log.debug("Invalid parameter error.", e);
                    }
                    return;
                }
                throw new CIFSException("Failed to resolve SIDs", e);
            } catch (final IOException e) {
                throw new CIFSException("Failed to resolve SIDs", e);
            }
        }
    }

    @Override

        assertThrows(CIFSException.class, () -> {
            compressionService.compress(testData, CompressionService.COMPRESSION_LZNT1);
        });
    }

    @Test
    @DisplayName("Test unsupported algorithm decompression")
    public void testUnsupportedAlgorithmDecompression() {
        assertThrows(CIFSException.class, () -> {

        @BeforeEach
        void setUp() throws CIFSException {
            doReturn(mockTreeHandle).when(smbFile).ensureTreeConnected();
            when(mockTreeHandle.getConfig()).thenReturn(mockConfig);
        }

        @Test
        void testExists() throws SmbException, CIFSException {
            // Arrange
            when(mockTreeHandle.isSMB2()).thenReturn(false);

    }

    // Error propagation: getSessionKey throws CIFSException
    @Test
    @DisplayName("getSessionKey throws CIFSException on failure")
    void getSessionKey_throws() throws CIFSException {
        doThrow(new CIFSException("session key failure")).when(session).getSessionKey();

        CIFSException ex = assertThrows(CIFSException.class, () -> session.getSessionKey());

    @DisplayName("ensureTreeConnected propagates CIFSException from handle")
    void ensureTreeConnected_propagatesException() throws Exception {
        // Arrange
        SmbPipeOutputStream out = newStream();
        CIFSException boom = new CIFSException("tree-fail");
        when(handle.ensureTreeConnected()).thenThrow(boom);

        // Act + Assert
        CIFSException ex = assertThrows(CIFSException.class, out::ensureTreeConnected);