"Default message should match the class contract");
        assertNull(ex.getCause(), "No cause expected from default constructor");
        assertTrue(ex instanceof SmbException, "Should be an SmbException");

        // toString should include the class name and the message
        String ts = ex.toString();
        assertTrue(ts.contains("SmbUnsupportedOperationException"), "toString should contain class name");

            return trans.getServerEncryptionKey();
        } catch (final SmbException e) {
            throw e;
        } catch (final IOException e) {
            throw new SmbException("Connection failed", e);
        }
    }

    @Override
    public void logon(final CIFSContext tf, final Address dc) throws SmbException {
        logon(tf, dc, 0);
    }

    @Override
    @Deprecated

     * @param auth
     *            The NTLM password authenticator containing user credentials
     * @throws SmbException
     *             If there is an error setting up the signing digest
     */
    public SMB1SigningDigest(final SmbTransportInternal transport, final NtlmPasswordAuthenticator auth) throws SmbException {
        this.digest = Crypto.getMD5();
        try {

        when(config.getTransactionBufferSize()).thenReturn(65535);
        when(tree.send(any(Smb2IoctlRequest.class), eq(RequestParam.NO_RETRY))).thenThrow(new SmbException("boom"));

        IOException ex = assertThrows(IOException.class, stream::available, "Should convert SmbException to IOException");
        assertTrue(ex.getMessage().contains("boom"));
    }

    @Test
    @DisplayName("ensureTreeConnected delegates to handle")

 *
 * @author mbechler
 */
public class SmbPipeInputStream extends SmbFileInputStream {

    private final SmbPipeHandleImpl handle;

    /**
     * @param handle
     * @param th
     * @throws SmbException
     */
    SmbPipeInputStream(final SmbPipeHandleImpl handle, final SmbTreeHandleImpl th) throws CIFSException {
        super(handle.getPipe(), th, null);
        this.handle = handle;
    }

    /**

     * @param textual the textual representation of the SID
     * @throws SmbException if the textual format is invalid
     */
    public SID(final String textual) throws SmbException {
        final StringTokenizer st = new StringTokenizer(textual, "-");
        if (st.countTokens() < 3 || !st.nextToken().equals("S")) {
            // need S-N-M
            throw new SmbException("Bad textual SID format: " + textual);
        }

        when(handle.isValid()).thenReturn(false);
        SmbWatchHandleImpl sut = new SmbWatchHandleImpl(handle, 0, false);

        SmbException ex = assertThrows(SmbException.class, sut::watch, "Expected SmbException when handle invalid");
        assertTrue(ex.getMessage().contains("Watch was broken by tree disconnect"));
    }

import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.CsvSource;
import org.junit.jupiter.params.provider.ValueSource;

import jcifs.smb.SID;
import jcifs.smb.SmbException;

/**
 * Test class for ACE (Access Control Entry)
 */
class ACETest {

    private ACE ace;
    private byte[] testBuffer;

    @BeforeEach
    void setUp() {
        ace = new ACE();
    }

        doReturn(mockTransport).when(poolSpy).getSmbTransport(eq(ctx), any(Address.class), anyInt(), eq(false), anyBoolean());

        // When/Then: Should throw SmbException
        SmbException ex = assertThrows(SmbException.class, () -> poolSpy.getChallenge(ctx, address));
        assertTrue(ex.getMessage().contains("Connection failed"));
    }

    @Test
    @DisplayName("Should perform logon to IPC$ share")

    }

    @Override
    public synchronized SmbFileHandleImpl ensureOpen() throws CIFSException {
        if (!this.open) {
            throw new SmbException("Pipe handle already closed");
        }

        if (!isOpen()) {
            try (SmbTreeHandleImpl th = ensureTreeConnected()) {

                if (th.isSMB2()) {