text: // Copyright (c) 2011-2015 The Bitcoin Core developers
  // Distributed under the MIT software license, see the accompanying
  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
  
  #include "chainparams.h"
  #include "coins.h"
  #include "consensus/consensus.h"
  #include "consensus/merkle.h"
  #include "consensus/validation.h"
  #include "validation.h"
  #include "masternode-payments.h"
  #include "miner.h"
  #include "pubkey.h"
  #include "script/standard.h"
  #include "txmempool.h"
  #include "uint256.h"
  #include "util.h"
  #include "utilstrencodings.h"
  
  #include "test/test_ripoffcoin.h"
  
  #include <boost/test/unit_test.hpp>
  
  BOOST_FIXTURE_TEST_SUITE(miner_tests, TestingSetup)
  
  static
  struct {
      unsigned char extranonce;
      unsigned int nonce;
  } blockinfo[] = {
      {0, 0x009c5477}, {0, 0x00a94582}, {0, 0x00af3d7f}, {0, 0x00d0b721},
      {0, 0x00d53e10}, {0, 0x00f52f0f}, {0, 0x00fb5876}, {0, 0x0117fb12},
      {0, 0x011f930b}, {0, 0x013365d2}, {0, 0x0151737e}, {0, 0x0152cdd0},
      {0, 0x01758d20}, {0, 0x0178d509}, {0, 0x0192103c}, {0, 0x01a3f1b8},
      {0, 0x01abc9c7}, {0, 0x01d2f50c}, {0, 0x01eebad1}, {0, 0x01ef3419},
      {0, 0x01f3f154}, {0, 0x01fa6245}, {0, 0x0224e780}, {0, 0x02281625},
      {0, 0x023a4d10}, {0, 0x0251d3cf}, {0, 0x02555277}, {0, 0x02648a41},
      {0, 0x0280795e}, {0, 0x02a3a585}, {0, 0x02ade34a}, {0, 0x02b02b02},
      {0, 0x02c9dc32}, {0, 0x02da9867}, {0, 0x02e4126e}, {0, 0x02e738c7},
      {0, 0x02f5c6a9}, {0, 0x0307bb0f}, {0, 0x0328ea58}, {0, 0x034fe819},
      {0, 0x036c6fcb}, {0, 0x039b8e11}, {0, 0x039fec90}, {0, 0x03a268ff},
      {0, 0x03d37583}, {0, 0x03d6a9a7}, {0, 0x03e7a013}, {0, 0x03f01ebe},
      {0, 0x0437104d}, {0, 0x043d0af7}, {0, 0x043d824d}, {0, 0x043f50fc},
      {0, 0x044def8c}, {0, 0x0452309a}, {0, 0x04538bd3}, {0, 0x0459286b},
      {0, 0x045bc734}, {0, 0x045c878a}, {0, 0x0485d3ba}, {0, 0x048a64e5},
      {0, 0x048d6ae1}, {0, 0x048dcfec}, {0, 0x049d2c79}, {0, 0x04ade791},
      {0, 0x04b75856}, {0, 0x04c1f89e}, {0, 0x04c2f731}, {0, 0x04ca0376},
      {0, 0x04ca102a}, {0, 0x04cbdfe5}, {0, 0x04cbe35a}, {0, 0x04ccfa95},
      {0, 0x04dcd6e4}, {0, 0x05066d8b}, {0, 0x05150274}, {0, 0x051dcfa0},
      {0, 0x052a4c40}, {0, 0x05310c4e}, {0, 0x05452f69}, {0, 0x05517592},
      {0, 0x05543eb8}, {0, 0x05549dc7}, {0, 0x05732695}, {0, 0x057b00d3},
      {0, 0x0584760d}, {0, 0x059ca419}, {0, 0x05b23b58}, {0, 0x05c69745},
      {0, 0x05e31a12}, {0, 0x05e932d5}, {0, 0x05ef8400}, {0, 0x05f0bdf6},
      {0, 0x05f93997}, {0, 0x05ff2978}, {0, 0x06030233}, {0, 0x0627d615},
      {0, 0x0644a441}, {0, 0x06518661}, {0, 0x06805ef2}, {0, 0x068c43dd},
      {0, 0x069cca16}, {0, 0x06acbf10}, {0, 0x06c2d607}, {0, 0x06d9ea08},
      {0, 0x0700d639}, {0, 0x07083d86}, {0, 0x071cc39d}, {0, 0x072c3cb8},
      {0, 0x07665a0f}, {0, 0x07741214},
  };
  
  CBlockIndex CreateBlockIndex(int nHeight)
  {
      CBlockIndex index;
      index.nHeight = nHeight;
      index.pprev = chainActive.Tip();
      return index;
  }
  
  bool TestSequenceLocks(const CTransaction &tx, int flags)
  {
      LOCK(mempool.cs);
      return CheckSequenceLocks(tx, flags);
  }
  
  // NOTE: These tests rely on CreateNewBlock doing its own self-validation!
  BOOST_AUTO_TEST_CASE(CreateNewBlock_validity)
  {
      const CChainParams& chainparams = Params(CBaseChainParams::MAIN);
      CScript scriptPubKey = CScript() << ParseHex("04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5f") << OP_CHECKSIG;
      CBlockTemplate *pblocktemplate;
      CMutableTransaction tx,tx2;
      CScript script;
      uint256 hash;
      TestMemPoolEntryHelper entry;
      entry.nFee = 11;
      entry.dPriority = 111.0;
      entry.nHeight = 11;
  
      LOCK(cs_main);
      fCheckpointsEnabled = false;
  
      // force UpdatedBlockTip to initialize nCachedBlockHeight
      mnpayments.UpdatedBlockTip(chainActive.Tip(), *connman);
  
      // Simple block creation, nothing special yet:
      BOOST_CHECK(pblocktemplate = CreateNewBlock(chainparams, scriptPubKey));
  
      // We can't make transactions until we have inputs
      // Therefore, load 100 blocks :)
      int baseheight = 0;
      std::vector<CTransaction*>txFirst;
      for (unsigned int i = 0; i < sizeof(blockinfo)/sizeof(*blockinfo); ++i)
      {
          CBlock *pblock = &pblocktemplate->block; // pointer for convenience
          pblock->nVersion = 1;
          pblock->nTime = chainActive.Tip()->GetMedianTimePast()+1;
          CMutableTransaction txCoinbase(pblock->vtx[0]);
          txCoinbase.nVersion = 1;
          txCoinbase.vin[0].scriptSig = CScript();
          txCoinbase.vin[0].scriptSig.push_back(blockinfo[i].extranonce);
          txCoinbase.vin[0].scriptSig.push_back(chainActive.Height());
          txCoinbase.vout[0].scriptPubKey = CScript();
          pblock->vtx[0] = CTransaction(txCoinbase);
          if (txFirst.size() == 0)
              baseheight = chainActive.Height();
          if (txFirst.size() < 4)
              txFirst.push_back(new CTransaction(pblock->vtx[0]));
          pblock->hashMerkleRoot = BlockMerkleRoot(*pblock);
          pblock->nNonce = blockinfo[i].nonce;
          BOOST_CHECK(ProcessNewBlock(chainparams, pblock, true, NULL, NULL));
          pblock->hashPrevBlock = pblock->GetHash();
      }
      delete pblocktemplate;
  
      // Just to make sure we can still make simple blocks
      BOOST_CHECK(pblocktemplate = CreateNewBlock(chainparams, scriptPubKey));
      delete pblocktemplate;
  
      // block sigops > limit: 1000 CHECKMULTISIG + 1
      tx.vin.resize(1);
      // NOTE: OP_NOP is used to force 20 SigOps for the CHECKMULTISIG
      tx.vin[0].scriptSig = CScript() << OP_0 << OP_0 << OP_0 << OP_NOP << OP_CHECKMULTISIG << OP_1;
      tx.vin[0].prevout.hash = txFirst[0]->GetHash();
      tx.vin[0].prevout.n = 0;
      tx.vout.resize(1);
      tx.vout[0].nValue = 50000000000LL;
      for (unsigned int i = 0; i < 1001; ++i)
      {
          tx.vout[0].nValue -= 1000000;
          hash = tx.GetHash();
          bool spendsCoinbase = (i == 0) ? true : false; // only first tx spends coinbase
          // If we don't set the # of sig ops in the CTxMemPoolEntry, template creation fails
          mempool.addUnchecked(hash, entry.Fee(1000000).Time(GetTime()).SpendsCoinbase(spendsCoinbase).FromTx(tx));
          tx.vin[0].prevout.hash = hash;
      }
      BOOST_CHECK_THROW(CreateNewBlock(chainparams, scriptPubKey), std::runtime_error);
      mempool.clear();
  
      tx.vin[0].prevout.hash = txFirst[0]->GetHash();
      tx.vout[0].nValue = 50000000000LL;
      for (unsigned int i = 0; i < 1001; ++i)
      {
          tx.vout[0].nValue -= 1000000;
          hash = tx.GetHash();
          bool spendsCoinbase = (i == 0) ? true : false; // only first tx spends coinbase
          // If we do set the # of sig ops in the CTxMemPoolEntry, template creation passes
          mempool.addUnchecked(hash, entry.Fee(1000000).Time(GetTime()).SpendsCoinbase(spendsCoinbase).SigOps(20).FromTx(tx));
          tx.vin[0].prevout.hash = hash;
      }
      BOOST_CHECK(pblocktemplate = CreateNewBlock(chainparams, scriptPubKey));
      delete pblocktemplate;
      mempool.clear();
  
      // block size > limit
      tx.vin[0].scriptSig = CScript();
      // 18 * (520char + DROP) + OP_1 = 9433 bytes
      std::vector<unsigned char> vchData(520);
      for (unsigned int i = 0; i < 18; ++i)
          tx.vin[0].scriptSig << vchData << OP_DROP;
      tx.vin[0].scriptSig << OP_1;
      tx.vin[0].prevout.hash = txFirst[0]->GetHash();
      tx.vout[0].nValue = 50000000000LL;
      for (unsigned int i = 0; i < 128; ++i)
      {
          tx.vout[0].nValue -= 10000000;
          hash = tx.GetHash();
          bool spendsCoinbase = (i == 0) ? true : false; // only first tx spends coinbase
          mempool.addUnchecked(hash, entry.Fee(1000000).Time(GetTime()).SpendsCoinbase(spendsCoinbase).FromTx(tx));
          tx.vin[0].prevout.hash = hash;
      }
      BOOST_CHECK(pblocktemplate = CreateNewBlock(chainparams, scriptPubKey));
      delete pblocktemplate;
      mempool.clear();
  
      // orphan in mempool, template creation fails
      hash = tx.GetHash();
      mempool.addUnchecked(hash, entry.Fee(1000000).Time(GetTime()).FromTx(tx));
      BOOST_CHECK_THROW(CreateNewBlock(chainparams, scriptPubKey), std::runtime_error);
      mempool.clear();
  
      // child with higher priority than parent
      tx.vin[0].scriptSig = CScript() << OP_1;
      tx.vin[0].prevout.hash = txFirst[1]->GetHash();
      tx.vout[0].nValue = 49000000000LL;
      hash = tx.GetHash();
      mempool.addUnchecked(hash, entry.Fee(1000000000LL).Time(GetTime()).SpendsCoinbase(true).FromTx(tx));
      tx.vin[0].prevout.hash = hash;
      tx.vin.resize(2);
      tx.vin[1].scriptSig = CScript() << OP_1;
      tx.vin[1].prevout.hash = txFirst[0]->GetHash();
      tx.vin[1].prevout.n = 0;
      tx.vout[0].nValue = 59000000000LL;
      hash = tx.GetHash();
      mempool.addUnchecked(hash, entry.Fee(4000000000LL).Time(GetTime()).SpendsCoinbase(true).FromTx(tx));
      BOOST_CHECK(pblocktemplate = CreateNewBlock(chainparams, scriptPubKey));
      delete pblocktemplate;
      mempool.clear();
  
      // coinbase in mempool, template creation fails
      tx.vin.resize(1);
      tx.vin[0].prevout.SetNull();
      tx.vin[0].scriptSig = CScript() << OP_0 << OP_1;
      tx.vout[0].nValue = 0;
      hash = tx.GetHash();
      // give it a fee so it'll get mined
      mempool.addUnchecked(hash, entry.Fee(100000).Time(GetTime()).SpendsCoinbase(false).FromTx(tx));
      BOOST_CHECK_THROW(CreateNewBlock(chainparams, scriptPubKey), std::runtime_error);
      mempool.clear();
  
      // invalid (pre-p2sh) txn in mempool, template creation fails
      tx.vin[0].prevout.hash = txFirst[0]->GetHash();
      tx.vin[0].prevout.n = 0;
      tx.vin[0].scriptSig = CScript() << OP_1;
      tx.vout[0].nValue = 49000000000LL;
      script = CScript() << OP_0;
      tx.vout[0].scriptPubKey = GetScriptForDestination(CScriptID(script));
      hash = tx.GetHash();
      mempool.addUnchecked(hash, entry.Fee(100000000L).Time(GetTime()).SpendsCoinbase(true).FromTx(tx));
      tx.vin[0].prevout.hash = hash;
      tx.vin[0].scriptSig = CScript() << std::vector<unsigned char>(script.begin(), script.end());
      tx.vout[0].nValue -= 1000000;
      hash = tx.GetHash();
      mempool.addUnchecked(hash, entry.Fee(1000000).Time(GetTime()).SpendsCoinbase(false).FromTx(tx));
      BOOST_CHECK_THROW(CreateNewBlock(chainparams, scriptPubKey), std::runtime_error);
      mempool.clear();
  
      // double spend txn pair in mempool, template creation fails
      tx.vin[0].prevout.hash = txFirst[0]->GetHash();
      tx.vin[0].scriptSig = CScript() << OP_1;
      tx.vout[0].nValue = 49000000000LL;
      tx.vout[0].scriptPubKey = CScript() << OP_1;
      hash = tx.GetHash();
      mempool.addUnchecked(hash, entry.Fee(1000000000L).Time(GetTime()).SpendsCoinbase(true).FromTx(tx));
      tx.vout[0].scriptPubKey = CScript() << OP_2;
      hash = tx.GetHash();
      mempool.addUnchecked(hash, entry.Fee(1000000000L).Time(GetTime()).SpendsCoinbase(true).FromTx(tx));
      BOOST_CHECK_THROW(CreateNewBlock(chainparams, scriptPubKey), std::runtime_error);
      mempool.clear();
  
      // subsidy changing
      // int nHeight = chainActive.Height();
      // // Create an actual 209999-long block chain (without valid blocks).
      // while (chainActive.Tip()->nHeight < 209999) {
      //     CBlockIndex* prev = chainActive.Tip();
      //     CBlockIndex* next = new CBlockIndex();
      //     next->phashBlock = new uint256(GetRandHash());
      //     pcoinsTip->SetBestBlock(next->GetBlockHash());
      //     next->pprev = prev;
      //     next->nHeight = prev->nHeight + 1;
      //     next->BuildSkip();
      //     chainActive.SetTip(next);
      // }
      // BOOST_CHECK(pblocktemplate = CreateNewBlock(chainparams, scriptPubKey));
      // delete pblocktemplate;
      // // Extend to a 210000-long block chain.
      // while (chainActive.Tip()->nHeight < 210000) {
      //     CBlockIndex* prev = chainActive.Tip();
      //     CBlockIndex* next = new CBlockIndex();
      //     next->phashBlock = new uint256(GetRandHash());
      //     pcoinsTip->SetBestBlock(next->GetBlockHash());
      //     next->pprev = prev;
      //     next->nHeight = prev->nHeight + 1;
      //     next->BuildSkip();
      //     chainActive.SetTip(next);
      // }
      // BOOST_CHECK(pblocktemplate = CreateNewBlock(chainparams, scriptPubKey));
      // delete pblocktemplate;
      // // Delete the dummy blocks again.
      // while (chainActive.Tip()->nHeight > nHeight) {
      //     CBlockIndex* del = chainActive.Tip();
      //     chainActive.SetTip(del->pprev);
      //     pcoinsTip->SetBestBlock(del->pprev->GetBlockHash());
      //     delete del->phashBlock;
      //     delete del;
      // }
  
      // non-final txs in mempool
      SetMockTime(chainActive.Tip()->GetMedianTimePast()+1);
      int flags = LOCKTIME_VERIFY_SEQUENCE|LOCKTIME_MEDIAN_TIME_PAST;
      // height map
      std::vector<int> prevheights;
  
      // relative height locked
      tx.nVersion = 2;
      tx.vin.resize(1);
      prevheights.resize(1);
      tx.vin[0].prevout.hash = txFirst[0]->GetHash(); // only 1 transaction
      tx.vin[0].prevout.n = 0;
      tx.vin[0].scriptSig = CScript() << OP_1;
      tx.vin[0].nSequence = chainActive.Tip()->nHeight + 1; // txFirst[0] is the 2nd block
      prevheights[0] = baseheight + 1;
      tx.vout.resize(1);
      tx.vout[0].nValue = 49000000000LL;
      tx.vout[0].scriptPubKey = CScript() << OP_1;
      tx.nLockTime = 0;
      hash = tx.GetHash();
      mempool.addUnchecked(hash, entry.Fee(1000000000L).Time(GetTime()).SpendsCoinbase(true).FromTx(tx));
      BOOST_CHECK(CheckFinalTx(tx, flags)); // Locktime passes
      BOOST_CHECK(!TestSequenceLocks(tx, flags)); // Sequence locks fail
      BOOST_CHECK(SequenceLocks(tx, flags, &prevheights, CreateBlockIndex(chainActive.Tip()->nHeight + 2))); // Sequence locks pass on 2nd block
  
      // relative time locked
      tx.vin[0].prevout.hash = txFirst[1]->GetHash();
      tx.vin[0].nSequence = CTxIn::SEQUENCE_LOCKTIME_TYPE_FLAG | (((chainActive.Tip()->GetMedianTimePast()+1-chainActive[1]->GetMedianTimePast()) >> CTxIn::SEQUENCE_LOCKTIME_GRANULARITY) + 1); // txFirst[1] is the 3rd block
      prevheights[0] = baseheight + 2;
      hash = tx.GetHash();
      mempool.addUnchecked(hash, entry.Time(GetTime()).FromTx(tx));
      BOOST_CHECK(CheckFinalTx(tx, flags)); // Locktime passes
      BOOST_CHECK(!TestSequenceLocks(tx, flags)); // Sequence locks fail
  
      for (int i = 0; i < CBlockIndex::nMedianTimeSpan; i++)
          chainActive.Tip()->GetAncestor(chainActive.Tip()->nHeight - i)->nTime += 512; //Trick the MedianTimePast
      BOOST_CHECK(SequenceLocks(tx, flags, &prevheights, CreateBlockIndex(chainActive.Tip()->nHeight + 1))); // Sequence locks pass 512 seconds later
      for (int i = 0; i < CBlockIndex::nMedianTimeSpan; i++)
          chainActive.Tip()->GetAncestor(chainActive.Tip()->nHeight - i)->nTime -= 512; //undo tricked MTP
  
      // absolute height locked
      tx.vin[0].prevout.hash = txFirst[2]->GetHash();
      tx.vin[0].nSequence = CTxIn::SEQUENCE_FINAL - 1;
      prevheights[0] = baseheight + 3;
      tx.nLockTime = chainActive.Tip()->nHeight + 1;
      hash = tx.GetHash();
      mempool.addUnchecked(hash, entry.Time(GetTime()).FromTx(tx));
      BOOST_CHECK(!CheckFinalTx(tx, flags)); // Locktime fails
      BOOST_CHECK(TestSequenceLocks(tx, flags)); // Sequence locks pass
      BOOST_CHECK(IsFinalTx(tx, chainActive.Tip()->nHeight + 2, chainActive.Tip()->GetMedianTimePast())); // Locktime passes on 2nd block
  
      // absolute time locked
      tx.vin[0].prevout.hash = txFirst[3]->GetHash();
      tx.nLockTime = chainActive.Tip()->GetMedianTimePast();
      prevheights.resize(1);
      prevheights[0] = baseheight + 4;
      hash = tx.GetHash();
      mempool.addUnchecked(hash, entry.Time(GetTime()).FromTx(tx));
      BOOST_CHECK(!CheckFinalTx(tx, flags)); // Locktime fails
      BOOST_CHECK(TestSequenceLocks(tx, flags)); // Sequence locks pass
      BOOST_CHECK(IsFinalTx(tx, chainActive.Tip()->nHeight + 2, chainActive.Tip()->GetMedianTimePast() + 1)); // Locktime passes 1 second later
  
      // mempool-dependent transactions (not added)
      tx.vin[0].prevout.hash = hash;
      prevheights[0] = chainActive.Tip()->nHeight + 1;
      tx.nLockTime = 0;
      tx.vin[0].nSequence = 0;
      BOOST_CHECK(CheckFinalTx(tx, flags)); // Locktime passes
      BOOST_CHECK(TestSequenceLocks(tx, flags)); // Sequence locks pass
      tx.vin[0].nSequence = 1;
      BOOST_CHECK(!TestSequenceLocks(tx, flags)); // Sequence locks fail
      tx.vin[0].nSequence = CTxIn::SEQUENCE_LOCKTIME_TYPE_FLAG;
      BOOST_CHECK(TestSequenceLocks(tx, flags)); // Sequence locks pass
      tx.vin[0].nSequence = CTxIn::SEQUENCE_LOCKTIME_TYPE_FLAG | 1;
      BOOST_CHECK(!TestSequenceLocks(tx, flags)); // Sequence locks fail
  
      BOOST_CHECK(pblocktemplate = CreateNewBlock(chainparams, scriptPubKey));
  
      // None of the of the absolute height/time locked tx should have made
      // it into the template because we still check IsFinalTx in CreateNewBlock,
      // but relative locked txs will if inconsistently added to mempool.
      // For now these will still generate a valid template until BIP68 soft fork
      BOOST_CHECK_EQUAL(pblocktemplate->block.vtx.size(), 3);
      delete pblocktemplate;
      // However if we advance height by 1 and time by 512, all of them should be mined
      for (int i = 0; i < CBlockIndex::nMedianTimeSpan; i++)
          chainActive.Tip()->GetAncestor(chainActive.Tip()->nHeight - i)->nTime += 512; //Trick the MedianTimePast
      chainActive.Tip()->nHeight++;
      SetMockTime(chainActive.Tip()->GetMedianTimePast() + 1);
  
      BOOST_CHECK(pblocktemplate = CreateNewBlock(chainparams, scriptPubKey));
      BOOST_CHECK_EQUAL(pblocktemplate->block.vtx.size(), 5);
      delete pblocktemplate;
  
      chainActive.Tip()->nHeight--;
      SetMockTime(0);
      mempool.clear();
  
      BOOST_FOREACH(CTransaction *tx, txFirst)
          delete tx;
  
      fCheckpointsEnabled = true;
  }
  
  BOOST_AUTO_TEST_SUITE_END()
  