assertNull(ex.getMessage(), "Default message should be null");
        assertNull(ex.getCause(), "Default cause should be null");
        assertTrue(ex instanceof CIFSException, "Should be a CIFSException");
        assertTrue(ex instanceof IOException, "Should be an IOException");
    }

    @Test
    @DisplayName("Should create SpnegoException with message")
    void testWithMessage() {

     * {@inheritDoc}
     *
     * @throws CIFSException
     *
     * @see jcifs.smb.SSPContext#calculateMIC(byte[])
     */
    @Override
    public byte[] calculateMIC(byte[] data) throws CIFSException {
        try {
            return this.gssContext.getMIC(data, 0, data.length, new MessageProp(false));
        } catch (GSSException e) {
            throw new CIFSException("Failed to calculate MIC", e);
        }
    }

    void testGetSessionKey() throws Exception {
        SmbSessionImpl session = newSession();

        // Absent key -> CIFSException
        CIFSException noKey = assertThrows(CIFSException.class, session::getSessionKey);
        assertTrue(noKey.getMessage().contains("No session key"));

        // Set a key via reflection and verify retrieval

        assertEquals(SMBProtocolDowngradeException.class.getName(), ex.toString());

        // Assert - type hierarchy: subclass of CIFSException and IOException
        assertTrue(ex instanceof jcifs.CIFSException, "Should extend CIFSException");
        assertTrue(ex instanceof IOException, "Should be an IOException (checked)");
    }

    @ParameterizedTest(name = "Message-only ctor preserves message: [{0}]")

 */
package jcifs.spnego;

import jcifs.CIFSException;

/**
 * Exception thrown during SPNEGO authentication processing.
 *
 * This exception indicates an error in SPNEGO token processing,
 * negotiation, or authentication flow.
 *
 * @author mbechler
 */
public class SpnegoException extends CIFSException {

    /**
     *
     */

        void testResolveWeakCIFSExceptionIsIgnored() throws Exception {
            SID sid = new SID("S-1-5-21-1-2-3");
            doThrow(new CIFSException("boom")).when(mockResolver).resolveSids(any(), anyString(), any());
            sid.initContext("srv", mockCtx);

            // Accessor should swallow CIFSException and proceed
            sid.getType();

    }

    @Test
    @DisplayName("calculateMIC wraps GSSException into CIFSException")
    void calculateMIC_failure_wraps() throws Exception {
        byte[] data = new byte[] { 0 };
        when(gssContext.getMIC(any(), anyInt(), anyInt(), any())).thenThrow(new GSSException(GSSException.FAILURE));

        CIFSException ex = assertThrows(CIFSException.class, () -> ctx.calculateMIC(data));

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

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import jcifs.CIFSContext;
import jcifs.CIFSException;
import jcifs.Credentials;
import jcifs.smb.NtlmPasswordAuthenticator;
import jcifs.smb.NtlmPasswordAuthenticator.AuthenticationType;

/**
 * Abstract base implementation of CIFSContext providing common functionality.

    @Test
    @DisplayName("getDfsReferrals handles empty name via CIFSException")
    void getDfsReferrals_emptyName() throws Exception {
        String emptyName = "";
        doThrow(new jcifs.CIFSException("invalid dfs name")).when(transport)
                .getDfsReferrals(eq(ctx), eq(emptyName), any(), any(), anyInt());

        assertThrows(jcifs.CIFSException.class, () -> transport.getDfsReferrals(ctx, emptyName, "h", "d", 1));

class CloseableIteratorTest extends BaseTest {

    @Mock
    private CloseableIterator<SmbResource> mockIterator;

    @Test
    @DisplayName("Should define close method")
    void testCloseMethod() throws CIFSException {
        // When
        mockIterator.close();

        // Then
        verify(mockIterator).close();
    }

    @Test
    @DisplayName("Should extend Iterator and AutoCloseable")