/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2013-2018 Regents of the University of California.
 *
 * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
 *
 * ndn-cxx library is free software: you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License as published by the Free Software
 * Foundation, either version 3 of the License, or (at your option) any later version.
 *
 * ndn-cxx library is distributed in the hope that it will be useful, but WITHOUT ANY
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
 * PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more details.
 *
 * You should have received copies of the GNU General Public License and GNU Lesser
 * General Public License along with ndn-cxx, e.g., in COPYING.md file.  If not, see
 * <http://www.gnu.org/licenses/>.
 *
 * See AUTHORS.md for complete list of ndn-cxx authors and contributors.
 */

#include "data.hpp"
#include "encoding/buffer-stream.hpp"
#include "security/signature-sha256-with-rsa.hpp"
#include "security/transform/private-key.hpp"
#include "security/transform/public-key.hpp"
#include "security/transform/signer-filter.hpp"
#include "security/transform/step-source.hpp"
#include "security/transform/stream-sink.hpp"
#include "security/verification-helpers.hpp"
#include "util/sha256.hpp"

#include "boost-test.hpp"
#include "identity-management-fixture.hpp"
#include <boost/lexical_cast.hpp>

namespace ndn {
namespace tests {

BOOST_AUTO_TEST_SUITE(TestData)

const uint8_t CONTENT1[] = {0x53, 0x55, 0x43, 0x43, 0x45, 0x53, 0x53, 0x21};

const uint8_t DATA1[] = {
0x06, 0xc5, // Data
    0x07, 0x14, // Name
        0x08, 0x05,
            0x6c, 0x6f, 0x63, 0x61, 0x6c,
        0x08, 0x03,
            0x6e, 0x64, 0x6e,
        0x08, 0x06,
            0x70, 0x72, 0x65, 0x66, 0x69, 0x78,
    0x14, 0x04, // MetaInfo
        0x19, 0x02, // FreshnessPeriod
            0x27, 0x10,
    0x15, 0x08, // Content
        0x53, 0x55, 0x43, 0x43, 0x45, 0x53, 0x53, 0x21,
    0x16, 0x1b, // SignatureInfo
        0x1b, 0x01, // SignatureType
            0x01,
        0x1c, 0x16, // KeyLocator
            0x07, 0x14, // Name
                0x08, 0x04,
                    0x74, 0x65, 0x73, 0x74,
                0x08, 0x03,
                    0x6b, 0x65, 0x79,
                0x08, 0x07,
                    0x6c, 0x6f, 0x63, 0x61, 0x74, 0x6f, 0x72,
    0x17, 0x80, // SignatureValue
        0x2f, 0xd6, 0xf1, 0x6e, 0x80, 0x6f, 0x10, 0xbe, 0xb1, 0x6f, 0x3e, 0x31, 0xec,
        0xe3, 0xb9, 0xea, 0x83, 0x30, 0x40, 0x03, 0xfc, 0xa0, 0x13, 0xd9, 0xb3, 0xc6,
        0x25, 0x16, 0x2d, 0xa6, 0x58, 0x41, 0x69, 0x62, 0x56, 0xd8, 0xb3, 0x6a, 0x38,
        0x76, 0x56, 0xea, 0x61, 0xb2, 0x32, 0x70, 0x1c, 0xb6, 0x4d, 0x10, 0x1d, 0xdc,
        0x92, 0x8e, 0x52, 0xa5, 0x8a, 0x1d, 0xd9, 0x96, 0x5e, 0xc0, 0x62, 0x0b, 0xcf,
        0x3a, 0x9d, 0x7f, 0xca, 0xbe, 0xa1, 0x41, 0x71, 0x85, 0x7a, 0x8b, 0x5d, 0xa9,
        0x64, 0xd6, 0x66, 0xb4, 0xe9, 0x8d, 0x0c, 0x28, 0x43, 0xee, 0xa6, 0x64, 0xe8,
        0x55, 0xf6, 0x1c, 0x19, 0x0b, 0xef, 0x99, 0x25, 0x1e, 0xdc, 0x78, 0xb3, 0xa7,
        0xaa, 0x0d, 0x14, 0x58, 0x30, 0xe5, 0x37, 0x6a, 0x6d, 0xdb, 0x56, 0xac, 0xa3,
        0xfc, 0x90, 0x7a, 0xb8, 0x66, 0x9c, 0x0e, 0xf6, 0xb7, 0x64, 0xd1
};

// ---- constructor, encode, decode ----

BOOST_AUTO_TEST_CASE(DefaultConstructor)
{
  Data d;
  BOOST_CHECK_EQUAL(d.hasWire(), false);
  BOOST_CHECK_EQUAL(d.getName(), "/");
  BOOST_CHECK_EQUAL(d.getContentType(), tlv::ContentType_Blob);
  BOOST_CHECK_EQUAL(d.getFreshnessPeriod(), DEFAULT_FRESHNESS_PERIOD);
  BOOST_CHECK(!d.getFinalBlock());
  BOOST_CHECK_EQUAL(d.getContent().type(), tlv::Content);
  BOOST_CHECK_EQUAL(d.getContent().value_size(), 0);
  BOOST_CHECK(!d.getSignature());
}

class DataSigningKeyFixture
{
protected:
  DataSigningKeyFixture()
  {
    m_privKey.loadPkcs1(PRIVATE_KEY_DER, sizeof(PRIVATE_KEY_DER));
    auto buf = m_privKey.derivePublicKey();
    m_pubKey.loadPkcs8(buf->data(), buf->size());
  }

protected:
  security::transform::PrivateKey m_privKey;
  security::transform::PublicKey m_pubKey;

private:
  static const uint8_t PRIVATE_KEY_DER[632];
};

const uint8_t DataSigningKeyFixture::PRIVATE_KEY_DER[] = {
  0x30, 0x82, 0x02, 0x74, 0x02, 0x01, 0x00, 0x30, 0x0d, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7,
  0x0d, 0x01, 0x01, 0x01, 0x05, 0x00, 0x04, 0x82, 0x02, 0x5e, 0x30, 0x82, 0x02, 0x5a, 0x02, 0x01,
  0x00, 0x02, 0x81, 0x81, 0x00, 0x9e, 0x06, 0x3e, 0x47, 0x85, 0xb2, 0x34, 0x37, 0xaa, 0x85, 0x47,
  0xac, 0x03, 0x24, 0x83, 0xb5, 0x9c, 0xa8, 0x05, 0x3a, 0x24, 0x1e, 0xeb, 0x89, 0x01, 0xbb, 0xe9,
  0x9b, 0xb2, 0xc3, 0x22, 0xac, 0x68, 0xe3, 0xf0, 0x6c, 0x02, 0xce, 0x68, 0xa6, 0xc4, 0xd0, 0xa7,
  0x06, 0x90, 0x9c, 0xaa, 0x1b, 0x08, 0x1d, 0x8b, 0x43, 0x9a, 0x33, 0x67, 0x44, 0x6d, 0x21, 0xa3,
  0x1b, 0x88, 0x9a, 0x97, 0x5e, 0x59, 0xc4, 0x15, 0x0b, 0xd9, 0x2c, 0xbd, 0x51, 0x07, 0x61, 0x82,
  0xad, 0xc1, 0xb8, 0xd7, 0xbf, 0x9b, 0xcf, 0x7d, 0x24, 0xc2, 0x63, 0xf3, 0x97, 0x17, 0xeb, 0xfe,
  0x62, 0x25, 0xba, 0x5b, 0x4d, 0x8a, 0xc2, 0x7a, 0xbd, 0x43, 0x8a, 0x8f, 0xb8, 0xf2, 0xf1, 0xc5,
  0x6a, 0x30, 0xd3, 0x50, 0x8c, 0xc8, 0x9a, 0xdf, 0xef, 0xed, 0x35, 0xe7, 0x7a, 0x62, 0xea, 0x76,
  0x7c, 0xbb, 0x08, 0x26, 0xc7, 0x02, 0x01, 0x11, 0x02, 0x81, 0x80, 0x04, 0xa5, 0xd4, 0xa7, 0xc0,
  0x2a, 0xe3, 0x6b, 0x0c, 0x8b, 0x73, 0x0c, 0x96, 0xae, 0x40, 0x1b, 0xee, 0x04, 0xf1, 0x18, 0x4c,
  0x5b, 0x43, 0x29, 0xad, 0x3a, 0x3b, 0x93, 0xa3, 0x60, 0x17, 0x9b, 0xa8, 0xbb, 0x68, 0xf4, 0x1e,
  0x33, 0x3f, 0x50, 0x32, 0xf7, 0x13, 0xf8, 0xa9, 0xe6, 0x7d, 0x79, 0x44, 0x00, 0xde, 0x72, 0xed,
  0xf2, 0x73, 0xfa, 0x7b, 0xae, 0x2a, 0x71, 0xc0, 0x40, 0xc8, 0x37, 0x6f, 0x38, 0xb2, 0x69, 0x1f,
  0xa8, 0x83, 0x7b, 0x42, 0x00, 0x73, 0x46, 0xe6, 0x4c, 0x91, 0x7f, 0x13, 0x06, 0x69, 0x06, 0xd8,
  0x3f, 0x22, 0x15, 0x75, 0xf6, 0xde, 0xcd, 0xb0, 0xbc, 0x66, 0x61, 0x91, 0x08, 0x9b, 0x2b, 0xb2,
  0x00, 0xa9, 0x67, 0x05, 0x39, 0x40, 0xb9, 0x37, 0x85, 0x88, 0x4f, 0x76, 0x79, 0x63, 0xc0, 0x88,
  0x3c, 0x86, 0xa8, 0x12, 0x94, 0x5f, 0xe4, 0x36, 0x3d, 0xea, 0xb9, 0x02, 0x41, 0x00, 0xb6, 0x2e,
  0xbb, 0xcd, 0x2f, 0x3a, 0x99, 0xe0, 0xa1, 0xa5, 0x44, 0x77, 0xea, 0x0b, 0xbe, 0x16, 0x95, 0x0e,
  0x64, 0xa7, 0x68, 0xd7, 0x4b, 0x15, 0x15, 0x23, 0xe2, 0x1e, 0x4e, 0x00, 0x2c, 0x22, 0x97, 0xae,
  0xb0, 0x74, 0xa6, 0x99, 0xd0, 0x5d, 0xb7, 0x1b, 0x10, 0x34, 0x13, 0xd2, 0x5f, 0x6e, 0x56, 0xad,
  0x85, 0x4a, 0xdb, 0xf0, 0x78, 0xbd, 0xf4, 0x8c, 0xb7, 0x9a, 0x3e, 0x99, 0xef, 0xb9, 0x02, 0x41,
  0x00, 0xde, 0x0d, 0xa7, 0x48, 0x75, 0x90, 0xad, 0x11, 0xa1, 0xac, 0xee, 0xcb, 0x41, 0x81, 0xc6,
  0xc8, 0x7f, 0xe7, 0x25, 0x94, 0xa1, 0x2a, 0x21, 0xa8, 0x57, 0xfe, 0x84, 0xf2, 0x5e, 0xb4, 0x96,
  0x35, 0xaf, 0xef, 0x2e, 0x7a, 0xf8, 0xda, 0x3f, 0xac, 0x8a, 0x3c, 0x1c, 0x9c, 0xbd, 0x44, 0xd6,
  0x90, 0xb5, 0xce, 0x1b, 0x12, 0xf9, 0x3b, 0x8c, 0x69, 0xf6, 0xa9, 0x02, 0x93, 0x48, 0x35, 0x0a,
  0x7f, 0x02, 0x40, 0x6b, 0x2a, 0x8c, 0x96, 0xd0, 0x7c, 0xd2, 0xfc, 0x9b, 0x52, 0x28, 0x46, 0x89,
  0xac, 0x8d, 0xef, 0x2a, 0x80, 0xef, 0xea, 0x01, 0x6f, 0x95, 0x93, 0xee, 0x51, 0x57, 0xd5, 0x97,
  0x4b, 0x65, 0x41, 0x86, 0x66, 0xc2, 0x26, 0x80, 0x1e, 0x3e, 0x55, 0x3e, 0x88, 0x63, 0xe2, 0x66,
  0x03, 0x47, 0x31, 0xd8, 0xa2, 0x4e, 0x68, 0x45, 0x24, 0x0a, 0xca, 0x17, 0x61, 0xd5, 0x69, 0xca,
  0x78, 0xab, 0x21, 0x02, 0x41, 0x00, 0x8f, 0xae, 0x7b, 0x4d, 0x00, 0xc7, 0x06, 0x92, 0xf0, 0x24,
  0x9a, 0x83, 0x84, 0xbd, 0x62, 0x81, 0xbc, 0x2c, 0x27, 0x60, 0x2c, 0x0c, 0x33, 0xe5, 0x66, 0x1d,
  0x28, 0xd9, 0x10, 0x1a, 0x7f, 0x4f, 0xea, 0x4f, 0x78, 0x6d, 0xb0, 0x14, 0xbf, 0xc9, 0xff, 0x17,
  0xd6, 0x47, 0x4d, 0x4a, 0xa8, 0xf4, 0x39, 0x67, 0x3e, 0xb1, 0xec, 0x8f, 0xf1, 0x71, 0xbd, 0xb8,
  0xa7, 0x50, 0x3d, 0xc7, 0xf7, 0xbb, 0x02, 0x40, 0x0d, 0x85, 0x32, 0x73, 0x9f, 0x0a, 0x33, 0x2f,
  0x4b, 0xa2, 0xbd, 0xd1, 0xb1, 0x42, 0xf0, 0x72, 0xa8, 0x7a, 0xc8, 0x15, 0x37, 0x1b, 0xde, 0x76,
  0x70, 0xce, 0xfd, 0x69, 0x20, 0x00, 0x4d, 0xc9, 0x4f, 0x35, 0x6f, 0xd1, 0x35, 0xa1, 0x04, 0x95,
  0x30, 0xe8, 0x3b, 0xd5, 0x03, 0x5a, 0x50, 0x21, 0x6d, 0xa0, 0x84, 0x39, 0xe9, 0x2e, 0x1e, 0xfc,
  0xe4, 0x82, 0x43, 0x20, 0x46, 0x7d, 0x0a, 0xb6
};

BOOST_FIXTURE_TEST_CASE(Encode, DataSigningKeyFixture)
{
  // manual data packet creation for now

  Data d(Name("/local/ndn/prefix"));
  d.setContentType(tlv::ContentType_Blob);
  d.setFreshnessPeriod(10_s);
  d.setContent(CONTENT1, sizeof(CONTENT1));

  Block signatureInfo(tlv::SignatureInfo);
  // SignatureType
  signatureInfo.push_back(makeNonNegativeIntegerBlock(tlv::SignatureType, tlv::SignatureSha256WithRsa));
  // KeyLocator
  {
    KeyLocator keyLocator;
    keyLocator.setName("/test/key/locator");
    signatureInfo.push_back(keyLocator.wireEncode());
  }
  signatureInfo.encode();

  // SignatureValue
  OBufferStream os;
  tlv::writeVarNumber(os, tlv::SignatureValue);

  OBufferStream sig;
  {
    namespace tr = security::transform;

    tr::StepSource input;
    input >> tr::signerFilter(DigestAlgorithm::SHA256, m_privKey) >> tr::streamSink(sig);

    input.write(d.getName().    wireEncode().wire(), d.getName().    wireEncode().size());
    input.write(d.getMetaInfo().wireEncode().wire(), d.getMetaInfo().wireEncode().size());
    input.write(d.getContent().              wire(), d.getContent().              size());
    input.write(signatureInfo.               wire(), signatureInfo.               size());
    input.end();
  }
  auto buf = sig.buf();
  tlv::writeVarNumber(os, buf->size());
  os.write(buf->get<char>(), buf->size());

  Block signatureValue(os.buf());
  Signature signature(signatureInfo, signatureValue);
  d.setSignature(signature);

  Block dataBlock(d.wireEncode());
  BOOST_CHECK_EQUAL_COLLECTIONS(DATA1, DATA1 + sizeof(DATA1),
                                dataBlock.begin(), dataBlock.end());
}

BOOST_FIXTURE_TEST_CASE(Decode02, DataSigningKeyFixture)
{
  Block dataBlock(DATA1, sizeof(DATA1));
  Data d(dataBlock);

  BOOST_CHECK_EQUAL(d.getName().toUri(), "/local/ndn/prefix");
  BOOST_CHECK_EQUAL(d.getContentType(), static_cast<uint32_t>(tlv::ContentType_Blob));
  BOOST_CHECK_EQUAL(d.getFreshnessPeriod(), 10_s);
  BOOST_CHECK_EQUAL(std::string(reinterpret_cast<const char*>(d.getContent().value()),
                                d.getContent().value_size()), "SUCCESS!");
  BOOST_CHECK_EQUAL(d.getSignature().getType(), tlv::SignatureSha256WithRsa);

  Block block = d.getSignature().getInfo();
  block.parse();
  KeyLocator keyLocator(block.get(tlv::KeyLocator));
  BOOST_CHECK_EQUAL(keyLocator.getName().toUri(), "/test/key/locator");

  BOOST_CHECK(security::verifySignature(d, m_pubKey));
}

class Decode03Fixture
{
protected:
  Decode03Fixture()
  {
    // initialize all elements to non-empty, to verify wireDecode clears them
    d.setName("/A");
    d.setContentType(tlv::ContentType_Key);
    d.setContent("1504C0C1C2C3"_block);
    d.setSignature(Signature("160A 1B0101 1C050703080142"_block,
                   "1780 B48F1707A3BCA3CFC5F32DE51D9B46C32D7D262A21544EBDA88C3B415D637503"
                        "FC9BEF20F88202A56AF9831E0D30205FD4154B08502BCDEE860267A5C3E03D8E"
                        "A6CB74BE391C01E0A57B991B4404FC11B7D777F1B700A4B65F201118CF1840A8"
                        "30A2A7C17DB4B7A8777E58515121AF9E2498627F8475414CDFD9801B8152AD5B"_block));
  }

protected:
  Data d;
};

BOOST_FIXTURE_TEST_SUITE(Decode03, Decode03Fixture)

BOOST_AUTO_TEST_CASE(MinimalNoSigValue)
{
  d.wireDecode("0607 0700 16031B0100"_block);
  BOOST_CHECK_EQUAL(d.getName(), "/"); // empty Name is allowed in Data
  BOOST_CHECK_EQUAL(d.getMetaInfo(), MetaInfo());
  BOOST_CHECK_EQUAL(d.getContent().value_size(), 0);
  BOOST_CHECK_EQUAL(d.getSignature().getType(), tlv::DigestSha256);
  BOOST_CHECK_EQUAL(d.getSignature().getValue().value_size(), 0);
}

BOOST_AUTO_TEST_CASE(Minimal)
{
  d.wireDecode("062C 0703080144 16031B0100 "
               "1720612A79399E60304A9F701C1ECAC7956BF2F1B046E6C6F0D6C29B3FE3A29BAD76"_block);
  BOOST_CHECK_EQUAL(d.getName(), "/D");
  BOOST_CHECK_EQUAL(d.getMetaInfo(), MetaInfo());
  BOOST_CHECK_EQUAL(d.getContent().value_size(), 0);
  BOOST_CHECK_EQUAL(d.getSignature().getType(), tlv::DigestSha256);
  BOOST_CHECK_EQUAL(d.getSignature().getValue().value_size(), 32);

  // encode without modification: retain original wire encoding
  BOOST_CHECK_EQUAL(d.wireEncode().value_size(), 44);

  // modify then re-encode as v0.2 format
  d.setName("/E");
  BOOST_CHECK_EQUAL(d.wireEncode(),
    "0630 0703080145 1400 1500 16031B0100 "
    "1720612A79399E60304A9F701C1ECAC7956BF2F1B046E6C6F0D6C29B3FE3A29BAD76"_block);
}

BOOST_AUTO_TEST_CASE(Full)
{
  d.wireDecode("063A 0703080144 FC00 1400 FC00 1500 FC00 16031B0100 FC00 "
               "1720612A79399E60304A9F701C1ECAC7956BF2F1B046E6C6F0D6C29B3FE3A29BAD76 FC00"_block);
  BOOST_CHECK_EQUAL(d.getName(), "/D");
  BOOST_CHECK_EQUAL(d.getMetaInfo(), MetaInfo());
  BOOST_CHECK_EQUAL(d.getContent().value_size(), 0);
  BOOST_CHECK_EQUAL(d.getSignature().getType(), tlv::DigestSha256);
  BOOST_CHECK_EQUAL(d.getSignature().getValue().value_size(), 32);

  // encode without modification: retain original wire encoding
  BOOST_CHECK_EQUAL(d.wireEncode().value_size(), 58);

  // modify then re-encode as v0.2 format
  d.setName("/E");
  BOOST_CHECK_EQUAL(d.wireEncode(),
    "0630 0703080145 1400 1500 16031B0100 "
    "1720612A79399E60304A9F701C1ECAC7956BF2F1B046E6C6F0D6C29B3FE3A29BAD76"_block);
}

BOOST_AUTO_TEST_CASE(CriticalElementOutOfOrder)
{
  BOOST_CHECK_THROW(d.wireDecode(
    "0630 1400 0703080145 1500 16031B0100 "
    "1720612A79399E60304A9F701C1ECAC7956BF2F1B046E6C6F0D6C29B3FE3A29BAD76"_block),
    tlv::Error);
  BOOST_CHECK_THROW(d.wireDecode(
    "0630 0703080145 1500 1400 16031B0100 "
    "1720612A79399E60304A9F701C1ECAC7956BF2F1B046E6C6F0D6C29B3FE3A29BAD76"_block),
    tlv::Error);
  BOOST_CHECK_THROW(d.wireDecode(
    "0630 0703080145 1400 16031B0100 1500 "
    "1720612A79399E60304A9F701C1ECAC7956BF2F1B046E6C6F0D6C29B3FE3A29BAD76"_block),
    tlv::Error);
  BOOST_CHECK_THROW(d.wireDecode(
    "0630 0703080145 1400 1500 "
    "1720612A79399E60304A9F701C1ECAC7956BF2F1B046E6C6F0D6C29B3FE3A29BAD76 16031B0100"_block),
    tlv::Error);
  BOOST_CHECK_THROW(d.wireDecode(
    "0652 0703080145 1400 1500 16031B0100 "
    "1720612A79399E60304A9F701C1ECAC7956BF2F1B046E6C6F0D6C29B3FE3A29BAD76"
    "1720612A79399E60304A9F701C1ECAC7956BF2F1B046E6C6F0D6C29B3FE3A29BAD76"_block),
    tlv::Error);
}

BOOST_AUTO_TEST_CASE(NameMissing)
{
  BOOST_CHECK_THROW(d.wireDecode("0605 16031B0100"_block), tlv::Error);
}

BOOST_AUTO_TEST_CASE(SigInfoMissing)
{
  BOOST_CHECK_THROW(d.wireDecode("0605 0703080144"_block), tlv::Error);
}

BOOST_AUTO_TEST_CASE(UnrecognizedNonCriticalElementBeforeName)
{
  BOOST_CHECK_THROW(d.wireDecode(
    "062F FC00 0703080144 16031B0100 "
    "1720612A79399E60304A9F701C1ECAC7956BF2F1B046E6C6F0D6C29B3FE3A29BAD76"_block),
    tlv::Error);
}

BOOST_AUTO_TEST_CASE(UnrecognizedCriticalElement)
{
  BOOST_CHECK_THROW(d.wireDecode(
    "0632 0703080145 FB00 1400 1500 16031B0100 "
    "1720612A79399E60304A9F701C1ECAC7956BF2F1B046E6C6F0D6C29B3FE3A29BAD76"_block),
    tlv::Error);
}

BOOST_AUTO_TEST_SUITE_END() // Decode03

BOOST_FIXTURE_TEST_CASE(FullName, IdentityManagementFixture)
{
  Data d(Name("/local/ndn/prefix"));
  d.setContentType(tlv::ContentType_Blob);
  d.setFreshnessPeriod(10_s);
  d.setContent(CONTENT1, sizeof(CONTENT1));
  BOOST_CHECK_THROW(d.getFullName(), Data::Error); // FullName is unavailable without signing

  m_keyChain.sign(d);
  BOOST_CHECK_EQUAL(d.hasWire(), true);
  Name fullName = d.getFullName(); // FullName is available after signing

  BOOST_CHECK_EQUAL(d.getName().size() + 1, fullName.size());
  BOOST_CHECK_EQUAL_COLLECTIONS(d.getName().begin(), d.getName().end(),
                                fullName.begin(), fullName.end() - 1);
  BOOST_CHECK_EQUAL(fullName.get(-1).value_size(), util::Sha256::DIGEST_SIZE);

  // FullName should be cached, so value() pointer points to same memory location
  BOOST_CHECK_EQUAL(fullName.get(-1).value(), d.getFullName().get(-1).value());

  d.setFreshnessPeriod(100_s); // invalidates FullName
  BOOST_CHECK_THROW(d.getFullName(), Data::Error);

  Data d1(Block(DATA1, sizeof(DATA1)));
  BOOST_CHECK_EQUAL(d1.getFullName(),
    "/local/ndn/prefix/"
    "sha256digest=28bad4b5275bd392dbb670c75cf0b66f13f7942b21e80f55c0e86b374753a548");
}

// ---- operators ----

BOOST_AUTO_TEST_CASE(Equality)
{
  Data a;
  Data b;
  BOOST_CHECK_EQUAL(a == b, true);
  BOOST_CHECK_EQUAL(a != b, false);

  a.setName("ndn:/A");
  BOOST_CHECK_EQUAL(a == b, false);
  BOOST_CHECK_EQUAL(a != b, true);

  b.setName("ndn:/B");
  BOOST_CHECK_EQUAL(a == b, false);
  BOOST_CHECK_EQUAL(a != b, true);

  b.setName("ndn:/A");
  BOOST_CHECK_EQUAL(a == b, true);
  BOOST_CHECK_EQUAL(a != b, false);

  a.setFreshnessPeriod(10_s);
  BOOST_CHECK_EQUAL(a == b, false);
  BOOST_CHECK_EQUAL(a != b, true);

  b.setFreshnessPeriod(10_s);
  BOOST_CHECK_EQUAL(a == b, true);
  BOOST_CHECK_EQUAL(a != b, false);

  static const uint8_t someData[] = "someData";
  a.setContent(someData, sizeof(someData));
  BOOST_CHECK_EQUAL(a == b, false);
  BOOST_CHECK_EQUAL(a != b, true);

  b.setContent(someData, sizeof(someData));
  BOOST_CHECK_EQUAL(a == b, true);
  BOOST_CHECK_EQUAL(a != b, false);

  a.setSignature(SignatureSha256WithRsa());
  BOOST_CHECK_EQUAL(a == b, false);
  BOOST_CHECK_EQUAL(a != b, true);

  b.setSignature(SignatureSha256WithRsa());
  BOOST_CHECK_EQUAL(a == b, true);
  BOOST_CHECK_EQUAL(a != b, false);
}

BOOST_AUTO_TEST_CASE(Print)
{
  Data d(Block(DATA1, sizeof(DATA1)));
  BOOST_CHECK_EQUAL(boost::lexical_cast<std::string>(d),
                    "Name: /local/ndn/prefix\n"
                    "MetaInfo: ContentType: 0, FreshnessPeriod: 10000 milliseconds\n"
                    "Content: (size: 8)\n"
                    "Signature: (type: SignatureSha256WithRsa, value_length: 128)\n");
}

BOOST_AUTO_TEST_SUITE_END() // TestData

} // namespace tests
} // namespace ndn