src/test/miner_tests.cpp

   1 // Copyright (c) 2011-2015 The Bitcoin Core developers
   2 // Distributed under the MIT software license, see the accompanying
   3 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
   4
   5 #include "chainparams.h"
   6 #include "coins.h"
   7 #include "consensus/consensus.h"
   8 #include "consensus/merkle.h"
   9 #include "consensus/validation.h"
  10 #include "validation.h"
  11 #include "miner.h"
  12 #include "pubkey.h"
  13 #include "script/standard.h"
  14 #include "txmempool.h"
  15 #include "uint256.h"
  16 #include "util.h"
  17 #include "utilstrencodings.h"
  18
  19 #include "test/test_bitcoin.h"
  20
  21 #include <memory>
  22
  23 #include <boost/test/unit_test.hpp>
  24
  25 BOOST_FIXTURE_TEST_SUITE(miner_tests, TestingSetup)
  26
  27 static
  28 struct {
  29     unsigned char extranonce;
  30     unsigned int nonce;
  31 } blockinfo[] = {
  32     {4, 0xa4a3e223}, {2, 0x15c32f9e}, {1, 0x0375b547}, {1, 0x7004a8a5},
  33     {2, 0xce440296}, {2, 0x52cfe198}, {1, 0x77a72cd0}, {2, 0xbb5d6f84},
  34     {2, 0x83f30c2c}, {1, 0x48a73d5b}, {1, 0xef7dcd01}, {2, 0x6809c6c4},
  35     {2, 0x0883ab3c}, {1, 0x087bbbe2}, {2, 0x2104a814}, {2, 0xdffb6daa},
  36     {1, 0xee8a0a08}, {2, 0xba4237c1}, {1, 0xa70349dc}, {1, 0x344722bb},
  37     {3, 0xd6294733}, {2, 0xec9f5c94}, {2, 0xca2fbc28}, {1, 0x6ba4f406},
  38     {2, 0x015d4532}, {1, 0x6e119b7c}, {2, 0x43e8f314}, {2, 0x27962f38},
  39     {2, 0xb571b51b}, {2, 0xb36bee23}, {2, 0xd17924a8}, {2, 0x6bc212d9},
  40     {1, 0x630d4948}, {2, 0x9a4c4ebb}, {2, 0x554be537}, {1, 0xd63ddfc7},
  41     {2, 0xa10acc11}, {1, 0x759a8363}, {2, 0xfb73090d}, {1, 0xe82c6a34},
  42     {1, 0xe33e92d7}, {3, 0x658ef5cb}, {2, 0xba32ff22}, {5, 0x0227a10c},
  43     {1, 0xa9a70155}, {5, 0xd096d809}, {1, 0x37176174}, {1, 0x830b8d0f},
  44     {1, 0xc6e3910e}, {2, 0x823f3ca8}, {1, 0x99850849}, {1, 0x7521fb81},
  45     {1, 0xaacaabab}, {1, 0xd645a2eb}, {5, 0x7aea1781}, {5, 0x9d6e4b78},
  46     {1, 0x4ce90fd8}, {1, 0xabdc832d}, {6, 0x4a34f32a}, {2, 0xf2524c1c},
  47     {2, 0x1bbeb08a}, {1, 0xad47f480}, {1, 0x9f026aeb}, {1, 0x15a95049},
  48     {2, 0xd1cb95b2}, {2, 0xf84bbda5}, {1, 0x0fa62cd1}, {1, 0xe05f9169},
  49     {1, 0x78d194a9}, {5, 0x3e38147b}, {5, 0x737ba0d4}, {1, 0x63378e10},
  50     {1, 0x6d5f91cf}, {2, 0x88612eb8}, {2, 0xe9639484}, {1, 0xb7fabc9d},
  51     {2, 0x19b01592}, {1, 0x5a90dd31}, {2, 0x5bd7e028}, {2, 0x94d00323},
  52     {1, 0xa9b9c01a}, {1, 0x3a40de61}, {1, 0x56e7eec7}, {5, 0x859f7ef6},
  53     {1, 0xfd8e5630}, {1, 0x2b0c9f7f}, {1, 0xba700e26}, {1, 0x7170a408},
  54     {1, 0x70de86a8}, {1, 0x74d64cd5}, {1, 0x49e738a1}, {2, 0x6910b602},
  55     {0, 0x643c565f}, {1, 0x54264b3f}, {2, 0x97ea6396}, {2, 0x55174459},
  56     {2, 0x03e8779a}, {1, 0x98f34d8f}, {1, 0xc07b2b07}, {1, 0xdfe29668},
  57     {1, 0x3141c7c1}, {1, 0xb3b595f4}, {1, 0x735abf08}, {5, 0x623bfbce},
  58     {2, 0xd351e722}, {1, 0xf4ca48c9}, {1, 0x5b19c670}, {1, 0xa164bf0e},
  59     {2, 0xbbbeb305}, {2, 0xfe1c810a},
  60 };
  61
  62 CBlockIndex CreateBlockIndex(int nHeight)
  63 {
  64     CBlockIndex index;
  65     index.nHeight = nHeight;
  66     index.pprev = chainActive.Tip();
  67     return index;
  68 }
  69
  70 bool TestSequenceLocks(const CTransaction &tx, int flags)
  71 {
  72     LOCK(mempool.cs);
  73     return CheckSequenceLocks(tx, flags);
  74 }
  75
  76 // Test suite for ancestor feerate transaction selection.
  77 // Implemented as an additional function, rather than a separate test case,
  78 // to allow reusing the blockchain created in CreateNewBlock_validity.
  79 // Note that this test assumes blockprioritysize is 0.
  80 void TestPackageSelection(const CChainParams& chainparams, CScript scriptPubKey, std::vector<CTransactionRef>& txFirst)
  81 {
  82     // Test the ancestor feerate transaction selection.
  83     TestMemPoolEntryHelper entry;
  84
  85     // Test that a medium fee transaction will be selected after a higher fee
  86     // rate package with a low fee rate parent.
  87     CMutableTransaction tx;
  88     tx.vin.resize(1);
  89     tx.vin[0].scriptSig = CScript() << OP_1;
  90     tx.vin[0].prevout.hash = txFirst[0]->GetHash();
  91     tx.vin[0].prevout.n = 0;
  92     tx.vout.resize(1);
  93     tx.vout[0].nValue = 5000000000LL - 1000;
  94     // This tx has a low fee: 1000 satoshis
  95     uint256 hashParentTx = tx.GetHash(); // save this txid for later use
  96     mempool.addUnchecked(hashParentTx, entry.Fee(1000).Time(GetTime()).SpendsCoinbase(true).FromTx(tx));
  97
  98     // This tx has a medium fee: 10000 satoshis
  99     tx.vin[0].prevout.hash = txFirst[1]->GetHash();
 100     tx.vout[0].nValue = 5000000000LL - 10000;
 101     uint256 hashMediumFeeTx = tx.GetHash();
 102     mempool.addUnchecked(hashMediumFeeTx, entry.Fee(10000).Time(GetTime()).SpendsCoinbase(true).FromTx(tx));
 103
 104     // This tx has a high fee, but depends on the first transaction
 105     tx.vin[0].prevout.hash = hashParentTx;
 106     tx.vout[0].nValue = 5000000000LL - 1000 - 50000; // 50k satoshi fee
 107     uint256 hashHighFeeTx = tx.GetHash();
 108     mempool.addUnchecked(hashHighFeeTx, entry.Fee(50000).Time(GetTime()).SpendsCoinbase(false).FromTx(tx));
 109
 110     std::unique_ptr<CBlockTemplate> pblocktemplate = BlockAssembler(chainparams).CreateNewBlock(scriptPubKey);
 111     BOOST_CHECK(pblocktemplate->block.vtx[1]->GetHash() == hashParentTx);
 112     BOOST_CHECK(pblocktemplate->block.vtx[2]->GetHash() == hashHighFeeTx);
 113     BOOST_CHECK(pblocktemplate->block.vtx[3]->GetHash() == hashMediumFeeTx);
 114
 115     // Test that a package below the min relay fee doesn't get included
 116     tx.vin[0].prevout.hash = hashHighFeeTx;
 117     tx.vout[0].nValue = 5000000000LL - 1000 - 50000; // 0 fee
 118     uint256 hashFreeTx = tx.GetHash();
 119     mempool.addUnchecked(hashFreeTx, entry.Fee(0).FromTx(tx));
 120     size_t freeTxSize = ::GetSerializeSize(tx, SER_NETWORK, PROTOCOL_VERSION);
 121
 122     // Calculate a fee on child transaction that will put the package just
 123     // below the min relay fee (assuming 1 child tx of the same size).
 124     CAmount feeToUse = minRelayTxFee.GetFee(2*freeTxSize) - 1;
 125
 126     tx.vin[0].prevout.hash = hashFreeTx;
 127     tx.vout[0].nValue = 5000000000LL - 1000 - 50000 - feeToUse;
 128     uint256 hashLowFeeTx = tx.GetHash();
 129     mempool.addUnchecked(hashLowFeeTx, entry.Fee(feeToUse).FromTx(tx));
 130     pblocktemplate = BlockAssembler(chainparams).CreateNewBlock(scriptPubKey);
 131     // Verify that the free tx and the low fee tx didn't get selected
 132     for (size_t i=0; i<pblocktemplate->block.vtx.size(); ++i) {
 133         BOOST_CHECK(pblocktemplate->block.vtx[i]->GetHash() != hashFreeTx);
 134         BOOST_CHECK(pblocktemplate->block.vtx[i]->GetHash() != hashLowFeeTx);
 135     }
 136
 137     // Test that packages above the min relay fee do get included, even if one
 138     // of the transactions is below the min relay fee
 139     // Remove the low fee transaction and replace with a higher fee transaction
 140     mempool.removeRecursive(tx);
 141     tx.vout[0].nValue -= 2; // Now we should be just over the min relay fee
 142     hashLowFeeTx = tx.GetHash();
 143     mempool.addUnchecked(hashLowFeeTx, entry.Fee(feeToUse+2).FromTx(tx));
 144     pblocktemplate = BlockAssembler(chainparams).CreateNewBlock(scriptPubKey);
 145     BOOST_CHECK(pblocktemplate->block.vtx[4]->GetHash() == hashFreeTx);
 146     BOOST_CHECK(pblocktemplate->block.vtx[5]->GetHash() == hashLowFeeTx);
 147
 148     // Test that transaction selection properly updates ancestor fee
 149     // calculations as ancestor transactions get included in a block.
 150     // Add a 0-fee transaction that has 2 outputs.
 151     tx.vin[0].prevout.hash = txFirst[2]->GetHash();
 152     tx.vout.resize(2);
 153     tx.vout[0].nValue = 5000000000LL - 100000000;
 154     tx.vout[1].nValue = 100000000; // 1BTC output
 155     uint256 hashFreeTx2 = tx.GetHash();
 156     mempool.addUnchecked(hashFreeTx2, entry.Fee(0).SpendsCoinbase(true).FromTx(tx));
 157
 158     // This tx can't be mined by itself
 159     tx.vin[0].prevout.hash = hashFreeTx2;
 160     tx.vout.resize(1);
 161     feeToUse = minRelayTxFee.GetFee(freeTxSize);
 162     tx.vout[0].nValue = 5000000000LL - 100000000 - feeToUse;
 163     uint256 hashLowFeeTx2 = tx.GetHash();
 164     mempool.addUnchecked(hashLowFeeTx2, entry.Fee(feeToUse).SpendsCoinbase(false).FromTx(tx));
 165     pblocktemplate = BlockAssembler(chainparams).CreateNewBlock(scriptPubKey);
 166
 167     // Verify that this tx isn't selected.
 168     for (size_t i=0; i<pblocktemplate->block.vtx.size(); ++i) {
 169         BOOST_CHECK(pblocktemplate->block.vtx[i]->GetHash() != hashFreeTx2);
 170         BOOST_CHECK(pblocktemplate->block.vtx[i]->GetHash() != hashLowFeeTx2);
 171     }
 172
 173     // This tx will be mineable, and should cause hashLowFeeTx2 to be selected
 174     // as well.
 175     tx.vin[0].prevout.n = 1;
 176     tx.vout[0].nValue = 100000000 - 10000; // 10k satoshi fee
 177     mempool.addUnchecked(tx.GetHash(), entry.Fee(10000).FromTx(tx));
 178     pblocktemplate = BlockAssembler(chainparams).CreateNewBlock(scriptPubKey);
 179     BOOST_CHECK(pblocktemplate->block.vtx[8]->GetHash() == hashLowFeeTx2);
 180 }
 181
 182 // NOTE: These tests rely on CreateNewBlock doing its own self-validation!
 183 BOOST_AUTO_TEST_CASE(CreateNewBlock_validity)
 184 {
 185     // Note that by default, these tests run with size accounting enabled.
 186     const CChainParams& chainparams = Params(CBaseChainParams::MAIN);
 187     CScript scriptPubKey = CScript() << ParseHex("04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5f") << OP_CHECKSIG;
 188     std::unique_ptr<CBlockTemplate> pblocktemplate;
 189     CMutableTransaction tx,tx2;
 190     CScript script;
 191     uint256 hash;
 192     TestMemPoolEntryHelper entry;
 193     entry.nFee = 11;
 194     entry.dPriority = 111.0;
 195     entry.nHeight = 11;
 196
 197     LOCK(cs_main);
 198     fCheckpointsEnabled = false;
 199
 200     // Simple block creation, nothing special yet:
 201     BOOST_CHECK(pblocktemplate = BlockAssembler(chainparams).CreateNewBlock(scriptPubKey));
 202
 203     // We can't make transactions until we have inputs
 204     // Therefore, load 100 blocks :)
 205     int baseheight = 0;
 206     std::vector<CTransactionRef> txFirst;
 207     for (unsigned int i = 0; i < sizeof(blockinfo)/sizeof(*blockinfo); ++i)
 208     {
 209         CBlock *pblock = &pblocktemplate->block; // pointer for convenience
 210         pblock->nVersion = 1;
 211         pblock->nTime = chainActive.Tip()->GetMedianTimePast()+1;
 212         CMutableTransaction txCoinbase(*pblock->vtx[0]);
 213         txCoinbase.nVersion = 1;
 214         txCoinbase.vin[0].scriptSig = CScript();
 215         txCoinbase.vin[0].scriptSig.push_back(blockinfo[i].extranonce);
 216         txCoinbase.vin[0].scriptSig.push_back(chainActive.Height());
 217         txCoinbase.vout.resize(1); // Ignore the (optional) segwit commitment added by CreateNewBlock (as the hardcoded nonces don't account for this)
 218         txCoinbase.vout[0].scriptPubKey = CScript();
 219         pblock->vtx[0] = MakeTransactionRef(std::move(txCoinbase));
 220         if (txFirst.size() == 0)
 221             baseheight = chainActive.Height();
 222         if (txFirst.size() < 4)
 223             txFirst.push_back(pblock->vtx[0]);
 224         pblock->hashMerkleRoot = BlockMerkleRoot(*pblock);
 225         pblock->nNonce = blockinfo[i].nonce;
 226         std::shared_ptr<const CBlock> shared_pblock = std::make_shared<const CBlock>(*pblock);
 227         BOOST_CHECK(ProcessNewBlock(chainparams, shared_pblock, true, NULL, NULL));
 228         pblock->hashPrevBlock = pblock->GetHash();
 229     }
 230
 231     // Just to make sure we can still make simple blocks
 232     BOOST_CHECK(pblocktemplate = BlockAssembler(chainparams).CreateNewBlock(scriptPubKey));
 233
 234     const CAmount BLOCKSUBSIDY = 50*COIN;
 235     const CAmount LOWFEE = CENT;
 236     const CAmount HIGHFEE = COIN;
 237     const CAmount HIGHERFEE = 4*COIN;
 238
 239     // block sigops > limit: 1000 CHECKMULTISIG + 1
 240     tx.vin.resize(1);
 241     // NOTE: OP_NOP is used to force 20 SigOps for the CHECKMULTISIG
 242     tx.vin[0].scriptSig = CScript() << OP_0 << OP_0 << OP_0 << OP_NOP << OP_CHECKMULTISIG << OP_1;
 243     tx.vin[0].prevout.hash = txFirst[0]->GetHash();
 244     tx.vin[0].prevout.n = 0;
 245     tx.vout.resize(1);
 246     tx.vout[0].nValue = BLOCKSUBSIDY;
 247     for (unsigned int i = 0; i < 1001; ++i)
 248     {
 249         tx.vout[0].nValue -= LOWFEE;
 250         hash = tx.GetHash();
 251         bool spendsCoinbase = (i == 0) ? true : false; // only first tx spends coinbase
 252         // If we don't set the # of sig ops in the CTxMemPoolEntry, template creation fails
 253         mempool.addUnchecked(hash, entry.Fee(LOWFEE).Time(GetTime()).SpendsCoinbase(spendsCoinbase).FromTx(tx));
 254         tx.vin[0].prevout.hash = hash;
 255     }
 256     BOOST_CHECK_THROW(BlockAssembler(chainparams).CreateNewBlock(scriptPubKey), std::runtime_error);
 257     mempool.clear();
 258
 259     tx.vin[0].prevout.hash = txFirst[0]->GetHash();
 260     tx.vout[0].nValue = BLOCKSUBSIDY;
 261     for (unsigned int i = 0; i < 1001; ++i)
 262     {
 263         tx.vout[0].nValue -= LOWFEE;
 264         hash = tx.GetHash();
 265         bool spendsCoinbase = (i == 0) ? true : false; // only first tx spends coinbase
 266         // If we do set the # of sig ops in the CTxMemPoolEntry, template creation passes
 267         mempool.addUnchecked(hash, entry.Fee(LOWFEE).Time(GetTime()).SpendsCoinbase(spendsCoinbase).SigOpsCost(80).FromTx(tx));
 268         tx.vin[0].prevout.hash = hash;
 269     }
 270     BOOST_CHECK(pblocktemplate = BlockAssembler(chainparams).CreateNewBlock(scriptPubKey));
 271     mempool.clear();
 272
 273     // block size > limit
 274     tx.vin[0].scriptSig = CScript();
 275     // 18 * (520char + DROP) + OP_1 = 9433 bytes
 276     std::vector<unsigned char> vchData(520);
 277     for (unsigned int i = 0; i < 18; ++i)
 278         tx.vin[0].scriptSig << vchData << OP_DROP;
 279     tx.vin[0].scriptSig << OP_1;
 280     tx.vin[0].prevout.hash = txFirst[0]->GetHash();
 281     tx.vout[0].nValue = BLOCKSUBSIDY;
 282     for (unsigned int i = 0; i < 128; ++i)
 283     {
 284         tx.vout[0].nValue -= LOWFEE;
 285         hash = tx.GetHash();
 286         bool spendsCoinbase = (i == 0) ? true : false; // only first tx spends coinbase
 287         mempool.addUnchecked(hash, entry.Fee(LOWFEE).Time(GetTime()).SpendsCoinbase(spendsCoinbase).FromTx(tx));
 288         tx.vin[0].prevout.hash = hash;
 289     }
 290     BOOST_CHECK(pblocktemplate = BlockAssembler(chainparams).CreateNewBlock(scriptPubKey));
 291     mempool.clear();
 292
 293     // orphan in mempool, template creation fails
 294     hash = tx.GetHash();
 295     mempool.addUnchecked(hash, entry.Fee(LOWFEE).Time(GetTime()).FromTx(tx));
 296     BOOST_CHECK_THROW(BlockAssembler(chainparams).CreateNewBlock(scriptPubKey), std::runtime_error);
 297     mempool.clear();
 298
 299     // child with higher priority than parent
 300     tx.vin[0].scriptSig = CScript() << OP_1;
 301     tx.vin[0].prevout.hash = txFirst[1]->GetHash();
 302     tx.vout[0].nValue = BLOCKSUBSIDY-HIGHFEE;
 303     hash = tx.GetHash();
 304     mempool.addUnchecked(hash, entry.Fee(HIGHFEE).Time(GetTime()).SpendsCoinbase(true).FromTx(tx));
 305     tx.vin[0].prevout.hash = hash;
 306     tx.vin.resize(2);
 307     tx.vin[1].scriptSig = CScript() << OP_1;
 308     tx.vin[1].prevout.hash = txFirst[0]->GetHash();
 309     tx.vin[1].prevout.n = 0;
 310     tx.vout[0].nValue = tx.vout[0].nValue+BLOCKSUBSIDY-HIGHERFEE; //First txn output + fresh coinbase - new txn fee
 311     hash = tx.GetHash();
 312     mempool.addUnchecked(hash, entry.Fee(HIGHERFEE).Time(GetTime()).SpendsCoinbase(true).FromTx(tx));
 313     BOOST_CHECK(pblocktemplate = BlockAssembler(chainparams).CreateNewBlock(scriptPubKey));
 314     mempool.clear();
 315
 316     // coinbase in mempool, template creation fails
 317     tx.vin.resize(1);
 318     tx.vin[0].prevout.SetNull();
 319     tx.vin[0].scriptSig = CScript() << OP_0 << OP_1;
 320     tx.vout[0].nValue = 0;
 321     hash = tx.GetHash();
 322     // give it a fee so it'll get mined
 323     mempool.addUnchecked(hash, entry.Fee(LOWFEE).Time(GetTime()).SpendsCoinbase(false).FromTx(tx));
 324     BOOST_CHECK_THROW(BlockAssembler(chainparams).CreateNewBlock(scriptPubKey), std::runtime_error);
 325     mempool.clear();
 326
 327     // invalid (pre-p2sh) txn in mempool, template creation fails
 328     tx.vin[0].prevout.hash = txFirst[0]->GetHash();
 329     tx.vin[0].prevout.n = 0;
 330     tx.vin[0].scriptSig = CScript() << OP_1;
 331     tx.vout[0].nValue = BLOCKSUBSIDY-LOWFEE;
 332     script = CScript() << OP_0;
 333     tx.vout[0].scriptPubKey = GetScriptForDestination(CScriptID(script));
 334     hash = tx.GetHash();
 335     mempool.addUnchecked(hash, entry.Fee(LOWFEE).Time(GetTime()).SpendsCoinbase(true).FromTx(tx));
 336     tx.vin[0].prevout.hash = hash;
 337     tx.vin[0].scriptSig = CScript() << std::vector<unsigned char>(script.begin(), script.end());
 338     tx.vout[0].nValue -= LOWFEE;
 339     hash = tx.GetHash();
 340     mempool.addUnchecked(hash, entry.Fee(LOWFEE).Time(GetTime()).SpendsCoinbase(false).FromTx(tx));
 341     BOOST_CHECK_THROW(BlockAssembler(chainparams).CreateNewBlock(scriptPubKey), std::runtime_error);
 342     mempool.clear();
 343
 344     // double spend txn pair in mempool, template creation fails
 345     tx.vin[0].prevout.hash = txFirst[0]->GetHash();
 346     tx.vin[0].scriptSig = CScript() << OP_1;
 347     tx.vout[0].nValue = BLOCKSUBSIDY-HIGHFEE;
 348     tx.vout[0].scriptPubKey = CScript() << OP_1;
 349     hash = tx.GetHash();
 350     mempool.addUnchecked(hash, entry.Fee(HIGHFEE).Time(GetTime()).SpendsCoinbase(true).FromTx(tx));
 351     tx.vout[0].scriptPubKey = CScript() << OP_2;
 352     hash = tx.GetHash();
 353     mempool.addUnchecked(hash, entry.Fee(HIGHFEE).Time(GetTime()).SpendsCoinbase(true).FromTx(tx));
 354     BOOST_CHECK_THROW(BlockAssembler(chainparams).CreateNewBlock(scriptPubKey), std::runtime_error);
 355     mempool.clear();
 356
 357     // subsidy changing
 358     int nHeight = chainActive.Height();
 359     // Create an actual 209999-long block chain (without valid blocks).
 360     while (chainActive.Tip()->nHeight < 209999) {
 361         CBlockIndex* prev = chainActive.Tip();
 362         CBlockIndex* next = new CBlockIndex();
 363         next->phashBlock = new uint256(GetRandHash());
 364         pcoinsTip->SetBestBlock(next->GetBlockHash());
 365         next->pprev = prev;
 366         next->nHeight = prev->nHeight + 1;
 367         next->BuildSkip();
 368         chainActive.SetTip(next);
 369     }
 370     BOOST_CHECK(pblocktemplate = BlockAssembler(chainparams).CreateNewBlock(scriptPubKey));
 371     // Extend to a 210000-long block chain.
 372     while (chainActive.Tip()->nHeight < 210000) {
 373         CBlockIndex* prev = chainActive.Tip();
 374         CBlockIndex* next = new CBlockIndex();
 375         next->phashBlock = new uint256(GetRandHash());
 376         pcoinsTip->SetBestBlock(next->GetBlockHash());
 377         next->pprev = prev;
 378         next->nHeight = prev->nHeight + 1;
 379         next->BuildSkip();
 380         chainActive.SetTip(next);
 381     }
 382     BOOST_CHECK(pblocktemplate = BlockAssembler(chainparams).CreateNewBlock(scriptPubKey));
 383     // Delete the dummy blocks again.
 384     while (chainActive.Tip()->nHeight > nHeight) {
 385         CBlockIndex* del = chainActive.Tip();
 386         chainActive.SetTip(del->pprev);
 387         pcoinsTip->SetBestBlock(del->pprev->GetBlockHash());
 388         delete del->phashBlock;
 389         delete del;
 390     }
 391
 392     // non-final txs in mempool
 393     SetMockTime(chainActive.Tip()->GetMedianTimePast()+1);
 394     int flags = LOCKTIME_VERIFY_SEQUENCE|LOCKTIME_MEDIAN_TIME_PAST;
 395     // height map
 396     std::vector<int> prevheights;
 397
 398     // relative height locked
 399     tx.nVersion = 2;
 400     tx.vin.resize(1);
 401     prevheights.resize(1);
 402     tx.vin[0].prevout.hash = txFirst[0]->GetHash(); // only 1 transaction
 403     tx.vin[0].prevout.n = 0;
 404     tx.vin[0].scriptSig = CScript() << OP_1;
 405     tx.vin[0].nSequence = chainActive.Tip()->nHeight + 1; // txFirst[0] is the 2nd block
 406     prevheights[0] = baseheight + 1;
 407     tx.vout.resize(1);
 408     tx.vout[0].nValue = BLOCKSUBSIDY-HIGHFEE;
 409     tx.vout[0].scriptPubKey = CScript() << OP_1;
 410     tx.nLockTime = 0;
 411     hash = tx.GetHash();
 412     mempool.addUnchecked(hash, entry.Fee(HIGHFEE).Time(GetTime()).SpendsCoinbase(true).FromTx(tx));
 413     BOOST_CHECK(CheckFinalTx(tx, flags)); // Locktime passes
 414     BOOST_CHECK(!TestSequenceLocks(tx, flags)); // Sequence locks fail
 415     BOOST_CHECK(SequenceLocks(tx, flags, &prevheights, CreateBlockIndex(chainActive.Tip()->nHeight + 2))); // Sequence locks pass on 2nd block
 416
 417     // relative time locked
 418     tx.vin[0].prevout.hash = txFirst[1]->GetHash();
 419     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
 420     prevheights[0] = baseheight + 2;
 421     hash = tx.GetHash();
 422     mempool.addUnchecked(hash, entry.Time(GetTime()).FromTx(tx));
 423     BOOST_CHECK(CheckFinalTx(tx, flags)); // Locktime passes
 424     BOOST_CHECK(!TestSequenceLocks(tx, flags)); // Sequence locks fail
 425
 426     for (int i = 0; i < CBlockIndex::nMedianTimeSpan; i++)
 427         chainActive.Tip()->GetAncestor(chainActive.Tip()->nHeight - i)->nTime += 512; //Trick the MedianTimePast
 428     BOOST_CHECK(SequenceLocks(tx, flags, &prevheights, CreateBlockIndex(chainActive.Tip()->nHeight + 1))); // Sequence locks pass 512 seconds later
 429     for (int i = 0; i < CBlockIndex::nMedianTimeSpan; i++)
 430         chainActive.Tip()->GetAncestor(chainActive.Tip()->nHeight - i)->nTime -= 512; //undo tricked MTP
 431
 432     // absolute height locked
 433     tx.vin[0].prevout.hash = txFirst[2]->GetHash();
 434     tx.vin[0].nSequence = CTxIn::SEQUENCE_FINAL - 1;
 435     prevheights[0] = baseheight + 3;
 436     tx.nLockTime = chainActive.Tip()->nHeight + 1;
 437     hash = tx.GetHash();
 438     mempool.addUnchecked(hash, entry.Time(GetTime()).FromTx(tx));
 439     BOOST_CHECK(!CheckFinalTx(tx, flags)); // Locktime fails
 440     BOOST_CHECK(TestSequenceLocks(tx, flags)); // Sequence locks pass
 441     BOOST_CHECK(IsFinalTx(tx, chainActive.Tip()->nHeight + 2, chainActive.Tip()->GetMedianTimePast())); // Locktime passes on 2nd block
 442
 443     // absolute time locked
 444     tx.vin[0].prevout.hash = txFirst[3]->GetHash();
 445     tx.nLockTime = chainActive.Tip()->GetMedianTimePast();
 446     prevheights.resize(1);
 447     prevheights[0] = baseheight + 4;
 448     hash = tx.GetHash();
 449     mempool.addUnchecked(hash, entry.Time(GetTime()).FromTx(tx));
 450     BOOST_CHECK(!CheckFinalTx(tx, flags)); // Locktime fails
 451     BOOST_CHECK(TestSequenceLocks(tx, flags)); // Sequence locks pass
 452     BOOST_CHECK(IsFinalTx(tx, chainActive.Tip()->nHeight + 2, chainActive.Tip()->GetMedianTimePast() + 1)); // Locktime passes 1 second later
 453
 454     // mempool-dependent transactions (not added)
 455     tx.vin[0].prevout.hash = hash;
 456     prevheights[0] = chainActive.Tip()->nHeight + 1;
 457     tx.nLockTime = 0;
 458     tx.vin[0].nSequence = 0;
 459     BOOST_CHECK(CheckFinalTx(tx, flags)); // Locktime passes
 460     BOOST_CHECK(TestSequenceLocks(tx, flags)); // Sequence locks pass
 461     tx.vin[0].nSequence = 1;
 462     BOOST_CHECK(!TestSequenceLocks(tx, flags)); // Sequence locks fail
 463     tx.vin[0].nSequence = CTxIn::SEQUENCE_LOCKTIME_TYPE_FLAG;
 464     BOOST_CHECK(TestSequenceLocks(tx, flags)); // Sequence locks pass
 465     tx.vin[0].nSequence = CTxIn::SEQUENCE_LOCKTIME_TYPE_FLAG | 1;
 466     BOOST_CHECK(!TestSequenceLocks(tx, flags)); // Sequence locks fail
 467
 468     BOOST_CHECK(pblocktemplate = BlockAssembler(chainparams).CreateNewBlock(scriptPubKey));
 469
 470     // None of the of the absolute height/time locked tx should have made
 471     // it into the template because we still check IsFinalTx in CreateNewBlock,
 472     // but relative locked txs will if inconsistently added to mempool.
 473     // For now these will still generate a valid template until BIP68 soft fork
 474     BOOST_CHECK_EQUAL(pblocktemplate->block.vtx.size(), 3);
 475     // However if we advance height by 1 and time by 512, all of them should be mined
 476     for (int i = 0; i < CBlockIndex::nMedianTimeSpan; i++)
 477         chainActive.Tip()->GetAncestor(chainActive.Tip()->nHeight - i)->nTime += 512; //Trick the MedianTimePast
 478     chainActive.Tip()->nHeight++;
 479     SetMockTime(chainActive.Tip()->GetMedianTimePast() + 1);
 480
 481     BOOST_CHECK(pblocktemplate = BlockAssembler(chainparams).CreateNewBlock(scriptPubKey));
 482     BOOST_CHECK_EQUAL(pblocktemplate->block.vtx.size(), 5);
 483
 484     chainActive.Tip()->nHeight--;
 485     SetMockTime(0);
 486     mempool.clear();
 487
 488     TestPackageSelection(chainparams, scriptPubKey, txFirst);
 489
 490     fCheckpointsEnabled = true;
 491 }
 492
 493 BOOST_AUTO_TEST_SUITE_END()