void constantValues() {
        assertEquals("1.3.6.1.5.5.2", SpnegoConstants.SPNEGO_MECHANISM, "SPNEGO_MECHANISM mismatch");
        assertEquals("1.2.840.113554.1.2.2", SpnegoConstants.KERBEROS_MECHANISM, "KERBEROS_MECHANISM mismatch");
        assertEquals("1.2.840.48018.1.2.2", SpnegoConstants.LEGACY_KERBEROS_MECHANISM, "LEGACY_KERBEROS_MECHANISM mismatch");

public interface SpnegoConstants {

    /**
     * OID for the SPNEGO mechanism
     */
    String SPNEGO_MECHANISM = "1.3.6.1.5.5.2";

    /**
     * OID for the Kerberos v5 mechanism
     */
    String KERBEROS_MECHANISM = "1.2.840.113554.1.2.2";

    /**
     * OID for the legacy Kerberos v5 mechanism
     */
    String LEGACY_KERBEROS_MECHANISM = "1.2.840.48018.1.2.2";

    /**
     * OID for the NTLMSSP mechanism

@DisplayName("NegTokenInit SPNEGO Token Tests")
class NegTokenInitTest {

    // Common OIDs used in tests
    private static final ASN1ObjectIdentifier OID_KRB = new ASN1ObjectIdentifier(SpnegoConstants.KERBEROS_MECHANISM);
    private static final ASN1ObjectIdentifier OID_KRB_LEGACY = new ASN1ObjectIdentifier(SpnegoConstants.LEGACY_KERBEROS_MECHANISM);