*
     * {@inheritDoc}
     *
     * @see jcifs.smb.CredentialsInternal#createContext(jcifs.CIFSContext, java.lang.String, java.lang.String, byte[],
     *      boolean)
     */
    @Override
    public SSPContext createContext(CIFSContext tc, String targetDomain, String host, byte[] initialToken, boolean doSigning)
            throws SmbException {
        checkNotClosed();

        // Check if authentication has expired

/**
 * Tests for SpnegoContext focusing on delegation, error handling, and edge cases.
 */
@ExtendWith(MockitoExtension.class)
class SpnegoContextTest {

    @Mock
    Configuration config;

    @Mock
    SSPContext mechContext;

    private ASN1ObjectIdentifier[] mechs;

    @BeforeEach
    void setup() {
        // Default: do not enforce or disable SPNEGO integrity

     * {@inheritDoc}
     *
     * @see jcifs.smb.NtlmPasswordAuthenticator#createContext(jcifs.CIFSContext, java.lang.String, java.lang.String,
     *      byte[], boolean)
     */
    @Override
    public SSPContext createContext(CIFSContext tc, String targetDomain, String host, byte[] initialToken, boolean doSigning)
            throws SmbException {
        if (host.indexOf('.') < 0 && host.toUpperCase(Locale.ROOT).equals(host)) {