/**
 * Security Support Provider (SSP) context.
 *
 * This interface provides context for security support provider
 * operations during SMB authentication.
 *
 * @author mbechler
 */
public interface SSPContext {

    /**
     * Gets the signing key for the session.
     * @return the signing key for the session
     * @throws CIFSException if an error occurs retrieving the signing key
     */

    /**
     * Instance a <code>SpnegoContext</code> object by wrapping a {@link SSPContext}
     * with the same mechanism this {@link SSPContext} used.
     *
     * @param source
     *            the {@link SSPContext} to be wrapped
     */
    SpnegoContext(final Configuration config, final SSPContext source) {
        this(config, source, source.getSupportedMechs());
    }

    /**

     * {@inheritDoc}
     *
     * @see jcifs.smb.SSPContext#isSupported(org.bouncycastle.asn1.ASN1ObjectIdentifier)
     */
    @Override
    public boolean isSupported(ASN1ObjectIdentifier mechanism) {
        return KRB5_MECH_OID.equals(mechanism) || KRB5_MS_MECH_OID.equals(mechanism);
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.smb.SSPContext#isPreferredMech(org.bouncycastle.asn1.ASN1ObjectIdentifier)

            // These methods do not throw and allow interaction checks.
            tc.getConfig();
            tc.getCredentials();

            // Minimal behavior: return a mock SSPContext with lenient stubbing
            SSPContext ctx = mock(SSPContext.class);
            lenient().when(ctx.isEstablished()).thenReturn(false);
            return ctx;
        }

        @Override
        public Subject getSubject() {

        }
    }

    @Nested
    @DisplayName("Mockito interactions")
    class MockitoInteractions {

        @Mock
        SSPContext mockCtx;

        // Helper exercising all SSPContext methods to verify call interactions.
        private void useContext(SSPContext ctx) throws Exception {
            ctx.getSigningKey();
            ctx.isEstablished();
            ctx.initSecContext(new byte[] { 1, 2, 3 }, 1, 1);

        return ret.toString();
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.smb.SSPContext#getFlags()
     */
    @Override
    public int getFlags() {
        return 0;
    }

    /**
     *
     * {@inheritDoc}
     *
     * @see jcifs.smb.SSPContext#isSupported(org.bouncycastle.asn1.ASN1ObjectIdentifier)
     */
    @Override

        Smb2SessionSetupRequest request = null;
        Smb2SessionSetupResponse response = null;
        SmbException ex = null;
        SSPContext ctx = null;
        byte[] token = negoResp.getSecurityBlob();
        final int securityMode =
                (negoResp.getSecurityMode() & Smb2Constants.SMB2_NEGOTIATE_SIGNING_REQUIRED) != 0 || trans.isSigningEnforced()

     * @param doSigning whether message signing should be enabled
     * @return a new SSP authentication context
     * @throws SmbException if context creation fails
     */
    SSPContext createContext(CIFSContext tc, String targetDomain, String host, byte[] initialToken, boolean doSigning) throws SmbException;

    /**
     * Get the security subject associated with these credentials.

        @Override
        public CredentialsInternal clone() {
            // For testing purposes, return this instance (allowed by return type)
            return this;
        }

        @Override
        public SSPContext createContext(CIFSContext tc, String targetDomain, String host, byte[] initialToken, boolean doSigning)
                throws SmbException {
            // Not used within these tests

/**
 * 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