if (minorVersion == null) {
                    fallback = true;
                }
            }
            if (idx < tok.length) {
                incrementalVersion = getNextIntegerToken(tok[idx++]);
                if (incrementalVersion == null) {
                    fallback = true;
                }
            }
            if (idx < tok.length) {
                qualifier = tok[idx];

     */
    static class TestSpnegoToken extends SpnegoToken {
        private boolean parsed = false;

        @Override
        public byte[] toByteArray() {
            byte[] tok = getMechanismToken();
            return tok == null ? new byte[0] : tok;
        }

        @Override
        protected void parse(byte[] token) throws IOException {
            if (token == null) {
                throw new IOException("token is null");

    private static byte[] spnegoInitWithMechs(ASN1ObjectIdentifier... mechs) {
        // Build a minimal SPNEGO NegTokenInit containing the provided mechanisms
        NegTokenInit tok = new NegTokenInit(mechs, 0, null, null);
        return tok.toByteArray();
    }

    @Test
    @DisplayName("createContext: rejects NetBIOS/short host names")
    void createContext_rejectsShortNetbiosHost() {

                    byte[] tok = new byte[] { 0x04, 0x01 };
                    byte[] buf = new byte[2 + 2 + der.length + 4];
                    int p = 0;
                    buf[p++] = tok[0];
                    buf[p++] = tok[1];
                    buf[p++] = 0x00;
                    buf[p++] = (byte) der.length;

        final String p = props.getProperty(key);
        if (p != null) {
            final StringTokenizer tok = new StringTokenizer(p, delim);
            final int len = tok.countTokens();
            final InetAddress[] arr = new InetAddress[len];
            for (int i = 0; i < len; i++) {
                final String addr = tok.nextToken();
                try {
                    arr[i] = InetAddress.getByName(addr);

        }
        try {
            NegTokenInit tok = new NegTokenInit(initialToken);
            if (log.isDebugEnabled()) {
                log.debug("Have initial token " + tok);
            }
            if (tok.getMechanisms() != null) {
                Set<ASN1ObjectIdentifier> mechs = new HashSet<>(Arrays.asList(tok.getMechanisms()));
                boolean foundKerberos = false;

        final String p = getProperty(key);
        if (p != null) {
            final StringTokenizer tok = new StringTokenizer(p, delim);
            final int len = tok.countTokens();
            final InetAddress[] arr = new InetAddress[len];
            for (int i = 0; i < len; i++) {
                final String addr = tok.nextToken();
                try {
                    arr[i] = InetAddress.getByName(addr);

                NegTokenInit tok = new NegTokenInit(initialToken);
                if (log.isDebugEnabled()) {
                    log.debug("Have initial token " + tok);
                }
                if (tok.getMechanisms() != null) {
                    Set<ASN1ObjectIdentifier> mechs = new HashSet<>(Arrays.asList(tok.getMechanisms()));