text: // Copyright (c) 2011-2016 The ACB coin bt developers
  // Distributed under the MIT software license, see the accompanying
  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
  
  #include "data/tx_invalid.json.h"
  #include "data/tx_valid.json.h"
  #include "test/test_bitcoin.h"
  
  #include "clientversion.h"
  #include "checkqueue.h"
  #include "consensus/tx_verify.h"
  #include "consensus/validation.h"
  #include "core_io.h"
  #include "key.h"
  #include "keystore.h"
  #include "validation.h"
  #include "policy/policy.h"
  #include "script/script.h"
  #include "script/sign.h"
  #include "script/script_error.h"
  #include "script/standard.h"
  #include "utilstrencodings.h"
  
  #include <map>
  #include <string>
  
  #include <boost/algorithm/string/classification.hpp>
  #include <boost/algorithm/string/split.hpp>
  #include <boost/test/unit_test.hpp>
  #include <boost/foreach.hpp>
  
  #include <univalue.h>
  
  typedef std::vector<unsigned char> valtype;
  
  // In script_tests.cpp
  extern UniValue read_json(const std::string& jsondata);
  
  static std::map<std::string, unsigned int> mapFlagNames = {
      {std::string("NONE"), (unsigned int)SCRIPT_VERIFY_NONE},
      {std::string("P2SH"), (unsigned int)SCRIPT_VERIFY_P2SH},
      {std::string("STRICTENC"), (unsigned int)SCRIPT_VERIFY_STRICTENC},
      {std::string("DERSIG"), (unsigned int)SCRIPT_VERIFY_DERSIG},
      {std::string("LOW_S"), (unsigned int)SCRIPT_VERIFY_LOW_S},
      {std::string("SIGPUSHONLY"), (unsigned int)SCRIPT_VERIFY_SIGPUSHONLY},
      {std::string("MINIMALDATA"), (unsigned int)SCRIPT_VERIFY_MINIMALDATA},
      {std::string("NULLDUMMY"), (unsigned int)SCRIPT_VERIFY_NULLDUMMY},
      {std::string("DISCOURAGE_UPGRADABLE_NOPS"), (unsigned int)SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_NOPS},
      {std::string("CLEANSTACK"), (unsigned int)SCRIPT_VERIFY_CLEANSTACK},
      {std::string("MINIMALIF"), (unsigned int)SCRIPT_VERIFY_MINIMALIF},
      {std::string("NULLFAIL"), (unsigned int)SCRIPT_VERIFY_NULLFAIL},
      {std::string("CHECKLOCKTIMEVERIFY"), (unsigned int)SCRIPT_VERIFY_CHECKLOCKTIMEVERIFY},
      {std::string("CHECKSEQUENCEVERIFY"), (unsigned int)SCRIPT_VERIFY_CHECKSEQUENCEVERIFY},
      {std::string("WITNESS"), (unsigned int)SCRIPT_VERIFY_WITNESS},
      {std::string("DISCOURAGE_UPGRADABLE_WITNESS_PROGRAM"), (unsigned int)SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_WITNESS_PROGRAM},
      {std::string("WITNESS_PUBKEYTYPE"), (unsigned int)SCRIPT_VERIFY_WITNESS_PUBKEYTYPE},
  };
  
  unsigned int ParseScriptFlags(std::string strFlags)
  {
      if (strFlags.empty()) {
          return 0;
      }
      unsigned int flags = 0;
      std::vector<std::string> words;
      boost::algorithm::split(words, strFlags, boost::algorithm::is_any_of(","));
  
      for (std::string word : words)
      {
          if (!mapFlagNames.count(word))
              BOOST_ERROR("Bad test: unknown verification flag '" << word << "'");
          flags |= mapFlagNames[word];
      }
  
      return flags;
  }
  
  std::string FormatScriptFlags(unsigned int flags)
  {
      if (flags == 0) {
          return "";
      }
      std::string ret;
      std::map<std::string, unsigned int>::const_iterator it = mapFlagNames.begin();
      while (it != mapFlagNames.end()) {
          if (flags & it->second) {
              ret += it->first + ",";
          }
          it++;
      }
      return ret.substr(0, ret.size() - 1);
  }
  
  BOOST_FIXTURE_TEST_SUITE(transaction_tests, BasicTestingSetup)
  
  BOOST_AUTO_TEST_CASE(tx_valid)
  {
      // Read tests from test/data/tx_valid.json
      // Format is an array of arrays
      // Inner arrays are either [ "comment" ]
      // or [[[prevout hash, prevout index, prevout scriptPubKey], [input 2], ...],"], serializedTransaction, verifyFlags
      // ... where all scripts are stringified scripts.
      //
      // verifyFlags is a comma separated list of script verification flags to apply, or "NONE"
      UniValue tests = read_json(std::string(json_tests::tx_valid, json_tests::tx_valid + sizeof(json_tests::tx_valid)));
  
      ScriptError err;
      for (unsigned int idx = 0; idx < tests.size(); idx++) {
          UniValue test = tests[idx];
          std::string strTest = test.write();
          if (test[0].isArray())
          {
              if (test.size() != 3 || !test[1].isStr() || !test[2].isStr())
              {
                  BOOST_ERROR("Bad test: " << strTest);
                  continue;
              }
  
              std::map<COutPoint, CScript> mapprevOutScriptPubKeys;
              std::map<COutPoint, int64_t> mapprevOutValues;
              UniValue inputs = test[0].get_array();
              bool fValid = true;
  	    for (unsigned int inpIdx = 0; inpIdx < inputs.size(); inpIdx++) {
  	        const UniValue& input = inputs[inpIdx];
                  if (!input.isArray())
                  {
                      fValid = false;
                      break;
                  }
                  UniValue vinput = input.get_array();
                  if (vinput.size() < 3 || vinput.size() > 4)
                  {
                      fValid = false;
                      break;
                  }
                  COutPoint outpoint(uint256S(vinput[0].get_str()), vinput[1].get_int());
                  mapprevOutScriptPubKeys[outpoint] = ParseScript(vinput[2].get_str());
                  if (vinput.size() >= 4)
                  {
                      mapprevOutValues[outpoint] = vinput[3].get_int64();
                  }
              }
              if (!fValid)
              {
                  BOOST_ERROR("Bad test: " << strTest);
                  continue;
              }
  
              std::string transaction = test[1].get_str();
              CDataStream stream(ParseHex(transaction), SER_NETWORK, PROTOCOL_VERSION);
              CTransaction tx(deserialize, stream);
  
              CValidationState state;
              BOOST_CHECK_MESSAGE(CheckTransaction(tx, state), strTest);
              BOOST_CHECK(state.IsValid());
  
              PrecomputedTransactionData txdata(tx);
              for (unsigned int i = 0; i < tx.vin.size(); i++)
              {
                  if (!mapprevOutScriptPubKeys.count(tx.vin[i].prevout))
                  {
                      BOOST_ERROR("Bad test: " << strTest);
                      break;
                  }
  
                  CAmount amount = 0;
                  if (mapprevOutValues.count(tx.vin[i].prevout)) {
                      amount = mapprevOutValues[tx.vin[i].prevout];
                  }
                  unsigned int verify_flags = ParseScriptFlags(test[2].get_str());
                  const CScriptWitness *witness = &tx.vin[i].scriptWitness;
                  BOOST_CHECK_MESSAGE(VerifyScript(tx.vin[i].scriptSig, mapprevOutScriptPubKeys[tx.vin[i].prevout],
                                                   witness, verify_flags, TransactionSignatureChecker(&tx, i, amount, txdata), &err),
                                      strTest);
                  BOOST_CHECK_MESSAGE(err == SCRIPT_ERR_OK, ScriptErrorString(err));
              }
          }
      }
  }
  
  BOOST_AUTO_TEST_CASE(tx_invalid)
  {
      // Read tests from test/data/tx_invalid.json
      // Format is an array of arrays
      // Inner arrays are either [ "comment" ]
      // or [[[prevout hash, prevout index, prevout scriptPubKey], [input 2], ...],"], serializedTransaction, verifyFlags
      // ... where all scripts are stringified scripts.
      //
      // verifyFlags is a comma separated list of script verification flags to apply, or "NONE"
      UniValue tests = read_json(std::string(json_tests::tx_invalid, json_tests::tx_invalid + sizeof(json_tests::tx_invalid)));
  
      // Initialize to SCRIPT_ERR_OK. The tests expect err to be changed to a
      // value other than SCRIPT_ERR_OK.
      ScriptError err = SCRIPT_ERR_OK;
      for (unsigned int idx = 0; idx < tests.size(); idx++) {
          UniValue test = tests[idx];
          std::string strTest = test.write();
          if (test[0].isArray())
          {
              if (test.size() != 3 || !test[1].isStr() || !test[2].isStr())
              {
                  BOOST_ERROR("Bad test: " << strTest);
                  continue;
              }
  
              std::map<COutPoint, CScript> mapprevOutScriptPubKeys;
              std::map<COutPoint, int64_t> mapprevOutValues;
              UniValue inputs = test[0].get_array();
              bool fValid = true;
  	    for (unsigned int inpIdx = 0; inpIdx < inputs.size(); inpIdx++) {
  	        const UniValue& input = inputs[inpIdx];
                  if (!input.isArray())
                  {
                      fValid = false;
                      break;
                  }
                  UniValue vinput = input.get_array();
                  if (vinput.size() < 3 || vinput.size() > 4)
                  {
                      fValid = false;
                      break;
                  }
                  COutPoint outpoint(uint256S(vinput[0].get_str()), vinput[1].get_int());
                  mapprevOutScriptPubKeys[outpoint] = ParseScript(vinput[2].get_str());
                  if (vinput.size() >= 4)
                  {
                      mapprevOutValues[outpoint] = vinput[3].get_int64();
                  }
              }
              if (!fValid)
              {
                  BOOST_ERROR("Bad test: " << strTest);
                  continue;
              }
  
              std::string transaction = test[1].get_str();
              CDataStream stream(ParseHex(transaction), SER_NETWORK, PROTOCOL_VERSION );
              CTransaction tx(deserialize, stream);
  
              CValidationState state;
              fValid = CheckTransaction(tx, state) && state.IsValid();
  
              PrecomputedTransactionData txdata(tx);
              for (unsigned int i = 0; i < tx.vin.size() && fValid; i++)
              {
                  if (!mapprevOutScriptPubKeys.count(tx.vin[i].prevout))
                  {
                      BOOST_ERROR("Bad test: " << strTest);
                      break;
                  }
  
                  unsigned int verify_flags = ParseScriptFlags(test[2].get_str());
                  CAmount amount = 0;
                  if (mapprevOutValues.count(tx.vin[i].prevout)) {
                      amount = mapprevOutValues[tx.vin[i].prevout];
                  }
                  const CScriptWitness *witness = &tx.vin[i].scriptWitness;
                  fValid = VerifyScript(tx.vin[i].scriptSig, mapprevOutScriptPubKeys[tx.vin[i].prevout],
                                        witness, verify_flags, TransactionSignatureChecker(&tx, i, amount, txdata), &err);
              }
              BOOST_CHECK_MESSAGE(!fValid, strTest);
              BOOST_CHECK_MESSAGE(err != SCRIPT_ERR_OK, ScriptErrorString(err));
          }
      }
  }
  
  BOOST_AUTO_TEST_CASE(basic_transaction_tests)
  {
      // Random real transaction (e2769b09e784f32f62ef849763d4f45b98e07ba658647343b915ff832b110436)
      unsigned char ch[] = {0x01, 0x00, 0x00, 0x00, 0x01, 0x6b, 0xff, 0x7f, 0xcd, 0x4f, 0x85, 0x65, 0xef, 0x40, 0x6d, 0xd5, 0xd6, 0x3d, 0x4f, 0xf9, 0x4f, 0x31, 0x8f, 0xe8, 0x20, 0x27, 0xfd, 0x4d, 0xc4, 0x51, 0xb0, 0x44, 0x74, 0x01, 0x9f, 0x74, 0xb4, 0x00, 0x00, 0x00, 0x00, 0x8c, 0x49, 0x30, 0x46, 0x02, 0x21, 0x00, 0xda, 0x0d, 0xc6, 0xae, 0xce, 0xfe, 0x1e, 0x06, 0xef, 0xdf, 0x05, 0x77, 0x37, 0x57, 0xde, 0xb1, 0x68, 0x82, 0x09, 0x30, 0xe3, 0xb0, 0xd0, 0x3f, 0x46, 0xf5, 0xfc, 0xf1, 0x50, 0xbf, 0x99, 0x0c, 0x02, 0x21, 0x00, 0xd2, 0x5b, 0x5c, 0x87, 0x04, 0x00, 0x76, 0xe4, 0xf2, 0x53, 0xf8, 0x26, 0x2e, 0x76, 0x3e, 0x2d, 0xd5, 0x1e, 0x7f, 0xf0, 0xbe, 0x15, 0x77, 0x27, 0xc4, 0xbc, 0x42, 0x80, 0x7f, 0x17, 0xbd, 0x39, 0x01, 0x41, 0x04, 0xe6, 0xc2, 0x6e, 0xf6, 0x7d, 0xc6, 0x10, 0xd2, 0xcd, 0x19, 0x24, 0x84, 0x78, 0x9a, 0x6c, 0xf9, 0xae, 0xa9, 0x93, 0x0b, 0x94, 0x4b, 0x7e, 0x2d, 0xb5, 0x34, 0x2b, 0x9d, 0x9e, 0x5b, 0x9f, 0xf7, 0x9a, 0xff, 0x9a, 0x2e, 0xe1, 0x97, 0x8d, 0xd7, 0xfd, 0x01, 0xdf, 0xc5, 0x22, 0xee, 0x02, 0x28, 0x3d, 0x3b, 0x06, 0xa9, 0xd0, 0x3a, 0xcf, 0x80, 0x96, 0x96, 0x8d, 0x7d, 0xbb, 0x0f, 0x91, 0x78, 0xff, 0xff, 0xff, 0xff, 0x02, 0x8b, 0xa7, 0x94, 0x0e, 0x00, 0x00, 0x00, 0x00, 0x19, 0x76, 0xa9, 0x14, 0xba, 0xde, 0xec, 0xfd, 0xef, 0x05, 0x07, 0x24, 0x7f, 0xc8, 0xf7, 0x42, 0x41, 0xd7, 0x3b, 0xc0, 0x39, 0x97, 0x2d, 0x7b, 0x88, 0xac, 0x40, 0x94, 0xa8, 0x02, 0x00, 0x00, 0x00, 0x00, 0x19, 0x76, 0xa9, 0x14, 0xc1, 0x09, 0x32, 0x48, 0x3f, 0xec, 0x93, 0xed, 0x51, 0xf5, 0xfe, 0x95, 0xe7, 0x25, 0x59, 0xf2, 0xcc, 0x70, 0x43, 0xf9, 0x88, 0xac, 0x00, 0x00, 0x00, 0x00, 0x00};
      std::vector<unsigned char> vch(ch, ch + sizeof(ch) -1);
      CDataStream stream(vch, SER_DISK, CLIENT_VERSION);
      CMutableTransaction tx;
      stream >> tx;
      CValidationState state;
      BOOST_CHECK_MESSAGE(CheckTransaction(tx, state) && state.IsValid(), "Simple deserialized transaction should be valid.");
  
      // Check that duplicate txins fail
      tx.vin.push_back(tx.vin[0]);
      BOOST_CHECK_MESSAGE(!CheckTransaction(tx, state) || !state.IsValid(), "Transaction with duplicate txins should be invalid.");
  }
  
  //
  // Helper: create two dummy transactions, each with
  // two outputs.  The first has 11 and 50 CENT outputs
  // paid to a TX_PUBKEY, the second 21 and 22 CENT outputs
  // paid to a TX_PUBKEYHASH.
  //
  static std::vector<CMutableTransaction>
  SetupDummyInputs(CBasicKeyStore& keystoreRet, CCoinsViewCache& coinsRet)
  {
      std::vector<CMutableTransaction> dummyTransactions;
      dummyTransactions.resize(2);
  
      // Add some keys to the keystore:
      CKey key[4];
      for (int i = 0; i < 4; i++)
      {
          key[i].MakeNewKey(i % 2);
          keystoreRet.AddKey(key[i]);
      }
  
      // Create some dummy input transactions
      dummyTransactions[0].vout.resize(2);
      dummyTransactions[0].vout[0].nValue = 11*CENT;
      dummyTransactions[0].vout[0].scriptPubKey << ToByteVector(key[0].GetPubKey()) << OP_CHECKSIG;
      dummyTransactions[0].vout[1].nValue = 50*CENT;
      dummyTransactions[0].vout[1].scriptPubKey << ToByteVector(key[1].GetPubKey()) << OP_CHECKSIG;
      AddCoins(coinsRet, dummyTransactions[0], 0);
  
      dummyTransactions[1].vout.resize(2);
      dummyTransactions[1].vout[0].nValue = 21*CENT;
      dummyTransactions[1].vout[0].scriptPubKey = GetScriptForDestination(key[2].GetPubKey().GetID());
      dummyTransactions[1].vout[1].nValue = 22*CENT;
      dummyTransactions[1].vout[1].scriptPubKey = GetScriptForDestination(key[3].GetPubKey().GetID());
      AddCoins(coinsRet, dummyTransactions[1], 0);
  
      return dummyTransactions;
  }
  
  BOOST_AUTO_TEST_CASE(test_Get)
  {
      CBasicKeyStore keystore;
      CCoinsView coinsDummy;
      CCoinsViewCache coins(&coinsDummy);
      std::vector<CMutableTransaction> dummyTransactions = SetupDummyInputs(keystore, coins);
  
      CMutableTransaction t1;
      t1.vin.resize(3);
      t1.vin[0].prevout.hash = dummyTransactions[0].GetHash();
      t1.vin[0].prevout.n = 1;
      t1.vin[0].scriptSig << std::vector<unsigned char>(65, 0);
      t1.vin[1].prevout.hash = dummyTransactions[1].GetHash();
      t1.vin[1].prevout.n = 0;
      t1.vin[1].scriptSig << std::vector<unsigned char>(65, 0) << std::vector<unsigned char>(33, 4);
      t1.vin[2].prevout.hash = dummyTransactions[1].GetHash();
      t1.vin[2].prevout.n = 1;
      t1.vin[2].scriptSig << std::vector<unsigned char>(65, 0) << std::vector<unsigned char>(33, 4);
      t1.vout.resize(2);
      t1.vout[0].nValue = 90*CENT;
      t1.vout[0].scriptPubKey << OP_1;
  
      BOOST_CHECK(AreInputsStandard(t1, coins));
      BOOST_CHECK_EQUAL(coins.GetValueIn(t1), (50+21+22)*CENT);
  }
  
  void CreateCreditAndSpend(const CKeyStore& keystore, const CScript& outscript, CTransactionRef& output, CMutableTransaction& input, bool success = true)
  {
      CMutableTransaction outputm;
      outputm.nVersion = 1;
      outputm.vin.resize(1);
      outputm.vin[0].prevout.SetNull();
      outputm.vin[0].scriptSig = CScript();
      outputm.vout.resize(1);
      outputm.vout[0].nValue = 1;
      outputm.vout[0].scriptPubKey = outscript;
      CDataStream ssout(SER_NETWORK, PROTOCOL_VERSION);
      ssout << outputm;
      ssout >> output;
      assert(output->vin.size() == 1);
      assert(output->vin[0] == outputm.vin[0]);
      assert(output->vout.size() == 1);
      assert(output->vout[0] == outputm.vout[0]);
  
      CMutableTransaction inputm;
      inputm.nVersion = 1;
      inputm.vin.resize(1);
      inputm.vin[0].prevout.hash = output->GetHash();
      inputm.vin[0].prevout.n = 0;
      inputm.vout.resize(1);
      inputm.vout[0].nValue = 1;
      inputm.vout[0].scriptPubKey = CScript();
      bool ret = SignSignature(keystore, *output, inputm, 0, SIGHASH_ALL);
      assert(ret == success);
      CDataStream ssin(SER_NETWORK, PROTOCOL_VERSION);
      ssin << inputm;
      ssin >> input;
      assert(input.vin.size() == 1);
      assert(input.vin[0] == inputm.vin[0]);
      assert(input.vout.size() == 1);
      assert(input.vout[0] == inputm.vout[0]);
      assert(input.vin[0].scriptWitness.stack == inputm.vin[0].scriptWitness.stack);
  }
  
  void CheckWithFlag(const CTransactionRef& output, const CMutableTransaction& input, int flags, bool success)
  {
      ScriptError error;
      CTransaction inputi(input);
      bool ret = VerifyScript(inputi.vin[0].scriptSig, output->vout[0].scriptPubKey, &inputi.vin[0].scriptWitness, flags, TransactionSignatureChecker(&inputi, 0, output->vout[0].nValue), &error);
      assert(ret == success);
  }
  
  static CScript PushAll(const std::vector<valtype>& values)
  {
      CScript result;
      for (const valtype& v : values) {
          if (v.size() == 0) {
              result << OP_0;
          } else if (v.size() == 1 && v[0] >= 1 && v[0] <= 16) {
              result << CScript::EncodeOP_N(v[0]);
          } else {
              result << v;
          }
      }
      return result;
  }
  
  void ReplaceRedeemScript(CScript& script, const CScript& redeemScript)
  {
      std::vector<valtype> stack;
      EvalScript(stack, script, SCRIPT_VERIFY_STRICTENC, BaseSignatureChecker(), SIGVERSION_BASE);
      assert(stack.size() > 0);
      stack.back() = std::vector<unsigned char>(redeemScript.begin(), redeemScript.end());
      script = PushAll(stack);
  }
  
  BOOST_AUTO_TEST_CASE(test_big_witness_transaction) {
      CMutableTransaction mtx;
      mtx.nVersion = 1;
  
      CKey key;
      key.MakeNewKey(true); // Need to use compressed keys in segwit or the signing will fail
      CBasicKeyStore keystore;
      keystore.AddKeyPubKey(key, key.GetPubKey());
      CKeyID hash = key.GetPubKey().GetID();
      CScript scriptPubKey = CScript() << OP_0 << std::vector<unsigned char>(hash.begin(), hash.end());
  
      std::vector<int> sigHashes;
      sigHashes.push_back(SIGHASH_NONE | SIGHASH_ANYONECANPAY);
      sigHashes.push_back(SIGHASH_SINGLE | SIGHASH_ANYONECANPAY);
      sigHashes.push_back(SIGHASH_ALL | SIGHASH_ANYONECANPAY);
      sigHashes.push_back(SIGHASH_NONE);
      sigHashes.push_back(SIGHASH_SINGLE);
      sigHashes.push_back(SIGHASH_ALL);
  
      // create a big transaction of 4500 inputs signed by the same key
      for(uint32_t ij = 0; ij < 4500; ij++) {
          uint32_t i = mtx.vin.size();
          uint256 prevId;
          prevId.SetHex("0000000000000000000000000000000000000000000000000000000000000100");
          COutPoint outpoint(prevId, i);
  
          mtx.vin.resize(mtx.vin.size() + 1);
          mtx.vin[i].prevout = outpoint;
          mtx.vin[i].scriptSig = CScript();
  
          mtx.vout.resize(mtx.vout.size() + 1);
          mtx.vout[i].nValue = 1000;
          mtx.vout[i].scriptPubKey = CScript() << OP_1;
      }
  
      // sign all inputs
      for(uint32_t i = 0; i < mtx.vin.size(); i++) {
          bool hashSigned = SignSignature(keystore, scriptPubKey, mtx, i, 1000, sigHashes.at(i % sigHashes.size()));
          assert(hashSigned);
      }
  
      CDataStream ssout(SER_NETWORK, PROTOCOL_VERSION);
      auto vstream = WithOrVersion(&ssout, 0);
      vstream << mtx;
      CTransaction tx(deserialize, vstream);
  
      // check all inputs concurrently, with the cache
      PrecomputedTransactionData txdata(tx);
      boost::thread_group threadGroup;
      CCheckQueue<CScriptCheck> scriptcheckqueue(128);
      CCheckQueueControl<CScriptCheck> control(&scriptcheckqueue);
  
      for (int i=0; i<20; i++)
          threadGroup.create_thread(boost::bind(&CCheckQueue<CScriptCheck>::Thread, boost::ref(scriptcheckqueue)));
  
      std::vector<Coin> coins;
      for(uint32_t i = 0; i < mtx.vin.size(); i++) {
          Coin coin;
          coin.nHeight = 1;
          coin.fCoinBase = false;
          coin.out.nValue = 1000;
          coin.out.scriptPubKey = scriptPubKey;
          coins.emplace_back(std::move(coin));
      }
  
      for(uint32_t i = 0; i < mtx.vin.size(); i++) {
          std::vector<CScriptCheck> vChecks;
          const CTxOut& output = coins[tx.vin[i].prevout.n].out;
          CScriptCheck check(output.scriptPubKey, output.nValue, tx, i, SCRIPT_VERIFY_P2SH | SCRIPT_VERIFY_WITNESS, false, &txdata);
          vChecks.push_back(CScriptCheck());
          check.swap(vChecks.back());
          control.Add(vChecks);
      }
  
      bool controlCheck = control.Wait();
      assert(controlCheck);
  
      threadGroup.interrupt_all();
      threadGroup.join_all();
  }
  
  BOOST_AUTO_TEST_CASE(test_witness)
  {
      CBasicKeyStore keystore, keystore2;
      CKey key1, key2, key3, key1L, key2L;
      CPubKey pubkey1, pubkey2, pubkey3, pubkey1L, pubkey2L;
      key1.MakeNewKey(true);
      key2.MakeNewKey(true);
      key3.MakeNewKey(true);
      key1L.MakeNewKey(false);
      key2L.MakeNewKey(false);
      pubkey1 = key1.GetPubKey();
      pubkey2 = key2.GetPubKey();
      pubkey3 = key3.GetPubKey();
      pubkey1L = key1L.GetPubKey();
      pubkey2L = key2L.GetPubKey();
      keystore.AddKeyPubKey(key1, pubkey1);
      keystore.AddKeyPubKey(key2, pubkey2);
      keystore.AddKeyPubKey(key1L, pubkey1L);
      keystore.AddKeyPubKey(key2L, pubkey2L);
      CScript scriptPubkey1, scriptPubkey2, scriptPubkey1L, scriptPubkey2L, scriptMulti;
      scriptPubkey1 << ToByteVector(pubkey1) << OP_CHECKSIG;
      scriptPubkey2 << ToByteVector(pubkey2) << OP_CHECKSIG;
      scriptPubkey1L << ToByteVector(pubkey1L) << OP_CHECKSIG;
      scriptPubkey2L << ToByteVector(pubkey2L) << OP_CHECKSIG;
      std::vector<CPubKey> oneandthree;
      oneandthree.push_back(pubkey1);
      oneandthree.push_back(pubkey3);
      scriptMulti = GetScriptForMultisig(2, oneandthree);
      keystore.AddCScript(scriptPubkey1);
      keystore.AddCScript(scriptPubkey2);
      keystore.AddCScript(scriptPubkey1L);
      keystore.AddCScript(scriptPubkey2L);
      keystore.AddCScript(scriptMulti);
      keystore.AddCScript(GetScriptForWitness(scriptPubkey1));
      keystore.AddCScript(GetScriptForWitness(scriptPubkey2));
      keystore.AddCScript(GetScriptForWitness(scriptPubkey1L));
      keystore.AddCScript(GetScriptForWitness(scriptPubkey2L));
      keystore.AddCScript(GetScriptForWitness(scriptMulti));
      keystore2.AddCScript(scriptMulti);
      keystore2.AddCScript(GetScriptForWitness(scriptMulti));
      keystore2.AddKeyPubKey(key3, pubkey3);
  
      CTransactionRef output1, output2;
      CMutableTransaction input1, input2;
      SignatureData sigdata;
  
      // Normal pay-to-compressed-pubkey.
      CreateCreditAndSpend(keystore, scriptPubkey1, output1, input1);
      CreateCreditAndSpend(keystore, scriptPubkey2, output2, input2);
      CheckWithFlag(output1, input1, 0, true);
      CheckWithFlag(output1, input1, SCRIPT_VERIFY_P2SH, true);
      CheckWithFlag(output1, input1, SCRIPT_VERIFY_WITNESS | SCRIPT_VERIFY_P2SH, true);
      CheckWithFlag(output1, input1, STANDARD_SCRIPT_VERIFY_FLAGS, true);
      CheckWithFlag(output1, input2, 0, false);
      CheckWithFlag(output1, input2, SCRIPT_VERIFY_P2SH, false);
      CheckWithFlag(output1, input2, SCRIPT_VERIFY_WITNESS | SCRIPT_VERIFY_P2SH, false);
      CheckWithFlag(output1, input2, STANDARD_SCRIPT_VERIFY_FLAGS, false);
  
      // P2SH pay-to-compressed-pubkey.
      CreateCreditAndSpend(keystore, GetScriptForDestination(CScriptID(scriptPubkey1)), output1, input1);
      CreateCreditAndSpend(keystore, GetScriptForDestination(CScriptID(scriptPubkey2)), output2, input2);
      ReplaceRedeemScript(input2.vin[0].scriptSig, scriptPubkey1);
      CheckWithFlag(output1, input1, 0, true);
      CheckWithFlag(output1, input1, SCRIPT_VERIFY_P2SH, true);
      CheckWithFlag(output1, input1, SCRIPT_VERIFY_WITNESS | SCRIPT_VERIFY_P2SH, true);
      CheckWithFlag(output1, input1, STANDARD_SCRIPT_VERIFY_FLAGS, true);
      CheckWithFlag(output1, input2, 0, true);
      CheckWithFlag(output1, input2, SCRIPT_VERIFY_P2SH, false);
      CheckWithFlag(output1, input2, SCRIPT_VERIFY_WITNESS | SCRIPT_VERIFY_P2SH, false);
      CheckWithFlag(output1, input2, STANDARD_SCRIPT_VERIFY_FLAGS, false);
  
      // Witness pay-to-compressed-pubkey (v0).
      CreateCreditAndSpend(keystore, GetScriptForWitness(scriptPubkey1), output1, input1);
      CreateCreditAndSpend(keystore, GetScriptForWitness(scriptPubkey2), output2, input2);
      CheckWithFlag(output1, input1, 0, true);
      CheckWithFlag(output1, input1, SCRIPT_VERIFY_P2SH, true);
      CheckWithFlag(output1, input1, SCRIPT_VERIFY_WITNESS | SCRIPT_VERIFY_P2SH, true);
      CheckWithFlag(output1, input1, STANDARD_SCRIPT_VERIFY_FLAGS, true);
      CheckWithFlag(output1, input2, 0, true);
      CheckWithFlag(output1, input2, SCRIPT_VERIFY_P2SH, true);
      CheckWithFlag(output1, input2, SCRIPT_VERIFY_WITNESS | SCRIPT_VERIFY_P2SH, false);
      CheckWithFlag(output1, input2, STANDARD_SCRIPT_VERIFY_FLAGS, false);
  
      // P2SH witness pay-to-compressed-pubkey (v0).
      CreateCreditAndSpend(keystore, GetScriptForDestination(CScriptID(GetScriptForWitness(scriptPubkey1))), output1, input1);
      CreateCreditAndSpend(keystore, GetScriptForDestination(CScriptID(GetScriptForWitness(scriptPubkey2))), output2, input2);
      ReplaceRedeemScript(input2.vin[0].scriptSig, GetScriptForWitness(scriptPubkey1));
      CheckWithFlag(output1, input1, 0, true);
      CheckWithFlag(output1, input1, SCRIPT_VERIFY_P2SH, true);
      CheckWithFlag(output1, input1, SCRIPT_VERIFY_WITNESS | SCRIPT_VERIFY_P2SH, true);
      CheckWithFlag(output1, input1, STANDARD_SCRIPT_VERIFY_FLAGS, true);
      CheckWithFlag(output1, input2, 0, true);
      CheckWithFlag(output1, input2, SCRIPT_VERIFY_P2SH, true);
      CheckWithFlag(output1, input2, SCRIPT_VERIFY_WITNESS | SCRIPT_VERIFY_P2SH, false);
      CheckWithFlag(output1, input2, STANDARD_SCRIPT_VERIFY_FLAGS, false);
  
      // Normal pay-to-uncompressed-pubkey.
      CreateCreditAndSpend(keystore, scriptPubkey1L, output1, input1);
      CreateCreditAndSpend(keystore, scriptPubkey2L, output2, input2);
      CheckWithFlag(output1, input1, 0, true);
      CheckWithFlag(output1, input1, SCRIPT_VERIFY_P2SH, true);
      CheckWithFlag(output1, input1, SCRIPT_VERIFY_WITNESS | SCRIPT_VERIFY_P2SH, true);
      CheckWithFlag(output1, input1, STANDARD_SCRIPT_VERIFY_FLAGS, true);
      CheckWithFlag(output1, input2, 0, false);
      CheckWithFlag(output1, input2, SCRIPT_VERIFY_P2SH, false);
      CheckWithFlag(output1, input2, SCRIPT_VERIFY_WITNESS | SCRIPT_VERIFY_P2SH, false);
      CheckWithFlag(output1, input2, STANDARD_SCRIPT_VERIFY_FLAGS, false);
  
      // P2SH pay-to-uncompressed-pubkey.
      CreateCreditAndSpend(keystore, GetScriptForDestination(CScriptID(scriptPubkey1L)), output1, input1);
      CreateCreditAndSpend(keystore, GetScriptForDestination(CScriptID(scriptPubkey2L)), output2, input2);
      ReplaceRedeemScript(input2.vin[0].scriptSig, scriptPubkey1L);
      CheckWithFlag(output1, input1, 0, true);
      CheckWithFlag(output1, input1, SCRIPT_VERIFY_P2SH, true);
      CheckWithFlag(output1, input1, SCRIPT_VERIFY_WITNESS | SCRIPT_VERIFY_P2SH, true);
      CheckWithFlag(output1, input1, STANDARD_SCRIPT_VERIFY_FLAGS, true);
      CheckWithFlag(output1, input2, 0, true);
      CheckWithFlag(output1, input2, SCRIPT_VERIFY_P2SH, false);
      CheckWithFlag(output1, input2, SCRIPT_VERIFY_WITNESS | SCRIPT_VERIFY_P2SH, false);
      CheckWithFlag(output1, input2, STANDARD_SCRIPT_VERIFY_FLAGS, false);
  
      // Signing disabled for witness pay-to-uncompressed-pubkey (v1).
      CreateCreditAndSpend(keystore, GetScriptForWitness(scriptPubkey1L), output1, input1, false);
      CreateCreditAndSpend(keystore, GetScriptForWitness(scriptPubkey2L), output2, input2, false);
  
      // Signing disabled for P2SH witness pay-to-uncompressed-pubkey (v1).
      CreateCreditAndSpend(keystore, GetScriptForDestination(CScriptID(GetScriptForWitness(scriptPubkey1L))), output1, input1, false);
      CreateCreditAndSpend(keystore, GetScriptForDestination(CScriptID(GetScriptForWitness(scriptPubkey2L))), output2, input2, false);
  
      // Normal 2-of-2 multisig
      CreateCreditAndSpend(keystore, scriptMulti, output1, input1, false);
      CheckWithFlag(output1, input1, 0, false);
      CreateCreditAndSpend(keystore2, scriptMulti, output2, input2, false);
      CheckWithFlag(output2, input2, 0, false);
      BOOST_CHECK(*output1 == *output2);
      UpdateTransaction(input1, 0, CombineSignatures(output1->vout[0].scriptPubKey, MutableTransactionSignatureChecker(&input1, 0, output1->vout[0].nValue), DataFromTransaction(input1, 0), DataFromTransaction(input2, 0)));
      CheckWithFlag(output1, input1, STANDARD_SCRIPT_VERIFY_FLAGS, true);
  
      // P2SH 2-of-2 multisig
      CreateCreditAndSpend(keystore, GetScriptForDestination(CScriptID(scriptMulti)), output1, input1, false);
      CheckWithFlag(output1, input1, 0, true);
      CheckWithFlag(output1, input1, SCRIPT_VERIFY_P2SH, false);
      CreateCreditAndSpend(keystore2, GetScriptForDestination(CScriptID(scriptMulti)), output2, input2, false);
      CheckWithFlag(output2, input2, 0, true);
      CheckWithFlag(output2, input2, SCRIPT_VERIFY_P2SH, false);
      BOOST_CHECK(*output1 == *output2);
      UpdateTransaction(input1, 0, CombineSignatures(output1->vout[0].scriptPubKey, MutableTransactionSignatureChecker(&input1, 0, output1->vout[0].nValue), DataFromTransaction(input1, 0), DataFromTransaction(input2, 0)));
      CheckWithFlag(output1, input1, SCRIPT_VERIFY_P2SH, true);
      CheckWithFlag(output1, input1, STANDARD_SCRIPT_VERIFY_FLAGS, true);
  
      // Witness 2-of-2 multisig
      CreateCreditAndSpend(keystore, GetScriptForWitness(scriptMulti), output1, input1, false);
      CheckWithFlag(output1, input1, 0, true);
      CheckWithFlag(output1, input1, SCRIPT_VERIFY_P2SH | SCRIPT_VERIFY_WITNESS, false);
      CreateCreditAndSpend(keystore2, GetScriptForWitness(scriptMulti), output2, input2, false);
      CheckWithFlag(output2, input2, 0, true);
      CheckWithFlag(output2, input2, SCRIPT_VERIFY_P2SH | SCRIPT_VERIFY_WITNESS, false);
      BOOST_CHECK(*output1 == *output2);
      UpdateTransaction(input1, 0, CombineSignatures(output1->vout[0].scriptPubKey, MutableTransactionSignatureChecker(&input1, 0, output1->vout[0].nValue), DataFromTransaction(input1, 0), DataFromTransaction(input2, 0)));
      CheckWithFlag(output1, input1, SCRIPT_VERIFY_P2SH | SCRIPT_VERIFY_WITNESS, true);
      CheckWithFlag(output1, input1, STANDARD_SCRIPT_VERIFY_FLAGS, true);
  
      // P2SH witness 2-of-2 multisig
      CreateCreditAndSpend(keystore, GetScriptForDestination(CScriptID(GetScriptForWitness(scriptMulti))), output1, input1, false);
      CheckWithFlag(output1, input1, SCRIPT_VERIFY_P2SH, true);
      CheckWithFlag(output1, input1, SCRIPT_VERIFY_P2SH | SCRIPT_VERIFY_WITNESS, false);
      CreateCreditAndSpend(keystore2, GetScriptForDestination(CScriptID(GetScriptForWitness(scriptMulti))), output2, input2, false);
      CheckWithFlag(output2, input2, SCRIPT_VERIFY_P2SH, true);
      CheckWithFlag(output2, input2, SCRIPT_VERIFY_P2SH | SCRIPT_VERIFY_WITNESS, false);
      BOOST_CHECK(*output1 == *output2);
      UpdateTransaction(input1, 0, CombineSignatures(output1->vout[0].scriptPubKey, MutableTransactionSignatureChecker(&input1, 0, output1->vout[0].nValue), DataFromTransaction(input1, 0), DataFromTransaction(input2, 0)));
      CheckWithFlag(output1, input1, SCRIPT_VERIFY_P2SH | SCRIPT_VERIFY_WITNESS, true);
      CheckWithFlag(output1, input1, STANDARD_SCRIPT_VERIFY_FLAGS, true);
  }
  
  BOOST_AUTO_TEST_CASE(test_IsStandard)
  {
      LOCK(cs_main);
      CBasicKeyStore keystore;
      CCoinsView coinsDummy;
      CCoinsViewCache coins(&coinsDummy);
      std::vector<CMutableTransaction> dummyTransactions = SetupDummyInputs(keystore, coins);
  
      CMutableTransaction t;
      t.vin.resize(1);
      t.vin[0].prevout.hash = dummyTransactions[0].GetHash();
      t.vin[0].prevout.n = 1;
      t.vin[0].scriptSig << std::vector<unsigned char>(65, 0);
      t.vout.resize(1);
      t.vout[0].nValue = 90*CENT;
      CKey key;
      key.MakeNewKey(true);
      t.vout[0].scriptPubKey = GetScriptForDestination(key.GetPubKey().GetID());
  
      std::string reason;
      BOOST_CHECK(IsStandardTx(t, reason));
  
      // Check dust with default relay fee:
      CAmount nDustThreshold = 182 * dustRelayFee.GetFeePerK()/1000 * 3;
      BOOST_CHECK_EQUAL(nDustThreshold, 546);
      // dust:
      t.vout[0].nValue = nDustThreshold - 1;
      BOOST_CHECK(!IsStandardTx(t, reason));
      // not dust:
      t.vout[0].nValue = nDustThreshold;
      BOOST_CHECK(IsStandardTx(t, reason));
  
      // Check dust with odd relay fee to verify rounding:
      // nDustThreshold = 182 * 1234 / 1000 * 3
      dustRelayFee = CFeeRate(1234);
      // dust:
      t.vout[0].nValue = 672 - 1;
      BOOST_CHECK(!IsStandardTx(t, reason));
      // not dust:
      t.vout[0].nValue = 672;
      BOOST_CHECK(IsStandardTx(t, reason));
      dustRelayFee = CFeeRate(DUST_RELAY_TX_FEE);
  
      t.vout[0].scriptPubKey = CScript() << OP_1;
      BOOST_CHECK(!IsStandardTx(t, reason));
  
      // MAX_OP_RETURN_RELAY-byte TX_NULL_DATA (standard)
      t.vout[0].scriptPubKey = CScript() << OP_RETURN << ParseHex("04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef3804678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38");
      BOOST_CHECK_EQUAL(MAX_OP_RETURN_RELAY, t.vout[0].scriptPubKey.size());
      BOOST_CHECK(IsStandardTx(t, reason));
  
      // MAX_OP_RETURN_RELAY+1-byte TX_NULL_DATA (non-standard)
      t.vout[0].scriptPubKey = CScript() << OP_RETURN << ParseHex("04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef3804678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef3800");
      BOOST_CHECK_EQUAL(MAX_OP_RETURN_RELAY + 1, t.vout[0].scriptPubKey.size());
      BOOST_CHECK(!IsStandardTx(t, reason));
  
      // Data payload can be encoded in any way...
      t.vout[0].scriptPubKey = CScript() << OP_RETURN << ParseHex("");
      BOOST_CHECK(IsStandardTx(t, reason));
      t.vout[0].scriptPubKey = CScript() << OP_RETURN << ParseHex("00") << ParseHex("01");
      BOOST_CHECK(IsStandardTx(t, reason));
      // OP_RESERVED *is* considered to be a PUSHDATA type opcode by IsPushOnly()!
      t.vout[0].scriptPubKey = CScript() << OP_RETURN << OP_RESERVED << -1 << 0 << ParseHex("01") << 2 << 3 << 4 << 5 << 6 << 7 << 8 << 9 << 10 << 11 << 12 << 13 << 14 << 15 << 16;
      BOOST_CHECK(IsStandardTx(t, reason));
      t.vout[0].scriptPubKey = CScript() << OP_RETURN << 0 << ParseHex("01") << 2 << ParseHex("ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
      BOOST_CHECK(IsStandardTx(t, reason));
  
      // ...so long as it only contains PUSHDATA's
      t.vout[0].scriptPubKey = CScript() << OP_RETURN << OP_RETURN;
      BOOST_CHECK(!IsStandardTx(t, reason));
  
      // TX_NULL_DATA w/o PUSHDATA
      t.vout.resize(1);
      t.vout[0].scriptPubKey = CScript() << OP_RETURN;
      BOOST_CHECK(IsStandardTx(t, reason));
  
      // Only one TX_NULL_DATA permitted in all cases
      t.vout.resize(2);
      t.vout[0].scriptPubKey = CScript() << OP_RETURN << ParseHex("04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38");
      t.vout[1].scriptPubKey = CScript() << OP_RETURN << ParseHex("04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38");
      BOOST_CHECK(!IsStandardTx(t, reason));
  
      t.vout[0].scriptPubKey = CScript() << OP_RETURN << ParseHex("04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38");
      t.vout[1].scriptPubKey = CScript() << OP_RETURN;
      BOOST_CHECK(!IsStandardTx(t, reason));
  
      t.vout[0].scriptPubKey = CScript() << OP_RETURN;
      t.vout[1].scriptPubKey = CScript() << OP_RETURN;
      BOOST_CHECK(!IsStandardTx(t, reason));
  }
  
  BOOST_AUTO_TEST_SUITE_END()
  