}

    @Test
    @DisplayName("seq ctor: valid minimal sequence sets apOptions and leaves ticket null")
    void sequenceConstructor_minimal_valid_setsApOptions_noTicket() throws Exception {
        // Arrange
        byte ap = (byte) 0x7A;
        ASN1Sequence seq = buildMinimalApReqSeq(ap);

        // Act
        KerberosApRequest req = new KerberosApRequest(seq, null);

        // Assert

}

func getHexSequences(start int, number int, paddinglen int) (seq []string) {
	for i := start; i <= number; i++ {
		if paddinglen == 0 {
			seq = append(seq, fmt.Sprintf("%x", i))
		} else {
			seq = append(seq, fmt.Sprintf(fmt.Sprintf("%%0%dx", paddinglen), i))
		}
	}
	return seq
}

func getSequences(start int, number int, paddinglen int) (seq []string) {
	for i := start; i <= number; i++ {

func (m *muxClient) response(seq uint32, r Response) {
	if debugReqs {
		fmt.Println(m.MuxID, m.parent.String(), "RESP")
	}
	if debugPrint {
		fmt.Printf("mux %d: got msg seqid %d, payload length: %d, err:%v\n", m.MuxID, seq, len(r.Msg), r.Err)
	}
	if !m.checkSeq(seq) {
		if debugReqs {
			fmt.Println(m.MuxID, m.parent.String(), "CHECKSEQ FAIL", m.RecvSeq, seq)
		}
		PutByteBuffer(r.Msg)
		r.Msg = nil

}

// checkSeq will check if sequence number is correct and increment it by 1.
func (m *muxServer) checkSeq(seq uint32) (ok bool) {
	if seq != m.RecvSeq {
		if debugPrint {
			fmt.Printf("expected sequence %d, got %d\n", m.RecvSeq, seq)
		}
		m.disconnect(fmt.Sprintf("receive sequence number mismatch. want %d, got %d", m.RecvSeq, seq), false)
		return false
	}
	m.RecvSeq++
	return true
}

   *     surrogate character at the end of the sequence
   */
  protected static int codePointAt(CharSequence seq, int index, int end) {
    checkNotNull(seq);
    if (index < end) {
      char c1 = seq.charAt(index++);
      if (c1 < Character.MIN_HIGH_SURROGATE || c1 > Character.MAX_LOW_SURROGATE) {
        // Fast path (first test is probably all we need to do)
        return c1;

     *
     * @param seq the ASN.1 sequence containing the AP-REQ
     * @param keys the Kerberos keys for decryption
     * @throws PACDecodingException if the sequence cannot be decoded
     */
    public KerberosApRequest(ASN1Sequence seq, KerberosKey[] keys) throws PACDecodingException {
        Enumeration<?> fields = seq.getObjects();
        while (fields.hasMoreElements()) {

    final CharSequence seq;

    CharSequenceCharSource(CharSequence seq) {
      this.seq = checkNotNull(seq);
    }

    @Override
    public Reader openStream() {
      return new CharSequenceReader(seq);
    }

    @Override
    public String read() {
      return seq.toString();
    }

    @Override
    public boolean isEmpty() {

			str := f[index]
			n, err := strconv.Atoi(str[:len(str)-len(suf)])
			if err == nil {
				f[index] = fmt.Sprintf("%d%s", seq+n, suf)
			}
		}

		if len(f) == 1 {
			printed = f[0]
		} else {
			printed = f[0] + "\t" + strings.Join(f[1:], " ")
		}

		want := fmt.Sprintf("%05d (%s:%d)\t%s", seq, input, lineno, printed)

        if (expectSeq != seq) {
            throw new CIFSException(String.format("Invalid MIC sequence, expect %d have %d", expectSeq, seq));
        }

        final byte[] verify = new byte[8];
        System.arraycopy(mic, 4, verify, 0, 8);
        if (!MessageDigest.isEqual(trunc, verify)) {
            if (log.isDebugEnabled()) {

        v.add(new DERTaggedObject(true, 3, new DERSequence(principalVector)));

        // Wrap in APPLICATION tag as expected by KerberosEncData
        DERSequence seq = new DERSequence(v);
        return new DERTaggedObject(false, BERTags.APPLICATION, 3, seq).getEncoded();
    }

    @Test
    void testConstructorWithEmptyToken() {
        // Test that PACDecodingException is thrown for an empty token