src/test/miner_tests.cpp

   1 // Copyright (c) 2011-2016 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/tx_verify.h>
  10 #include <consensus/validation.h>
  11 #include <validation.h>
  12 #include <miner.h>
  13 #include <policy/policy.h>
  14 #include <pubkey.h>
  15 #include <script/standard.h>
  16 #include <txmempool.h>
  17 #include <uint256.h>
  18 #include <util.h>
  19 #include <utilstrencodings.h>
  20
  21 #include <test/test_bitcoin.h>
  22
  23 #include <memory>
  24
  25 #include <boost/test/unit_test.hpp>
  26
  27 BOOST_FIXTURE_TEST_SUITE(miner_tests, TestingSetup)
  28
  29 static CFeeRate blockMinFeeRate = CFeeRate(DEFAULT_BLOCK_MIN_TX_FEE);
  30
  31 static BlockAssembler AssemblerForTest(const CChainParams& params) {
  32     BlockAssembler::Options options;
  33
  34     options.nBlockMaxWeight = MAX_BLOCK_WEIGHT;
  35     options.blockMinFeeRate = blockMinFeeRate;
  36     return BlockAssembler(params, options);
  37 }
  38
  39 static
  40 struct {
  41     unsigned char extranonce;
  42     unsigned int nonce;
  43 } blockinfo[] = {
  44     {4, 0xa4a3e223}, {2, 0x15c32f9e}, {1, 0x0375b547}, {1, 0x7004a8a5},
  45     {2, 0xce440296}, {2, 0x52cfe198}, {1, 0x77a72cd0}, {2, 0xbb5d6f84},
  46     {2, 0x83f30c2c}, {1, 0x48a73d5b}, {1, 0xef7dcd01}, {2, 0x6809c6c4},
  47     {2, 0x0883ab3c}, {1, 0x087bbbe2}, {2, 0x2104a814}, {2, 0xdffb6daa},
  48     {1, 0xee8a0a08}, {2, 0xba4237c1}, {1, 0xa70349dc}, {1, 0x344722bb},
  49     {3, 0xd6294733}, {2, 0xec9f5c94}, {2, 0xca2fbc28}, {1, 0x6ba4f406},
  50     {2, 0x015d4532}, {1, 0x6e119b7c}, {2, 0x43e8f314}, {2, 0x27962f38},
  51     {2, 0xb571b51b}, {2, 0xb36bee23}, {2, 0xd17924a8}, {2, 0x6bc212d9},
  52     {1, 0x630d4948}, {2, 0x9a4c4ebb}, {2, 0x554be537}, {1, 0xd63ddfc7},
  53     {2, 0xa10acc11}, {1, 0x759a8363}, {2, 0xfb73090d}, {1, 0xe82c6a34},
  54     {1, 0xe33e92d7}, {3, 0x658ef5cb}, {2, 0xba32ff22}, {5, 0x0227a10c},
  55     {1, 0xa9a70155}, {5, 0xd096d809}, {1, 0x37176174}, {1, 0x830b8d0f},
  56     {1, 0xc6e3910e}, {2, 0x823f3ca8}, {1, 0x99850849}, {1, 0x7521fb81},
  57     {1, 0xaacaabab}, {1, 0xd645a2eb}, {5, 0x7aea1781}, {5, 0x9d6e4b78},
  58     {1, 0x4ce90fd8}, {1, 0xabdc832d}, {6, 0x4a34f32a}, {2, 0xf2524c1c},
  59     {2, 0x1bbeb08a}, {1, 0xad47f480}, {1, 0x9f026aeb}, {1, 0x15a95049},
  60     {2, 0xd1cb95b2}, {2, 0xf84bbda5}, {1, 0x0fa62cd1}, {1, 0xe05f9169},
  61     {1, 0x78d194a9}, {5, 0x3e38147b}, {5, 0x737ba0d4}, {1, 0x63378e10},
  62     {1, 0x6d5f91cf}, {2, 0x88612eb8}, {2, 0xe9639484}, {1, 0xb7fabc9d},
  63     {2, 0x19b01592}, {1, 0x5a90dd31}, {2, 0x5bd7e028}, {2, 0x94d00323},
  64     {1, 0xa9b9c01a}, {1, 0x3a40de61}, {1, 0x56e7eec7}, {5, 0x859f7ef6},
  65     {1, 0xfd8e5630}, {1, 0x2b0c9f7f}, {1, 0xba700e26}, {1, 0x7170a408},
  66     {1, 0x70de86a8}, {1, 0x74d64cd5}, {1, 0x49e738a1}, {2, 0x6910b602},
  67     {0, 0x643c565f}, {1, 0x54264b3f}, {2, 0x97ea6396}, {2, 0x55174459},
  68     {2, 0x03e8779a}, {1, 0x98f34d8f}, {1, 0xc07b2b07}, {1, 0xdfe29668},
  69     {1, 0x3141c7c1}, {1, 0xb3b595f4}, {1, 0x735abf08}, {5, 0x623bfbce},
  70     {2, 0xd351e722}, {1, 0xf4ca48c9}, {1, 0x5b19c670}, {1, 0xa164bf0e},
  71     {2, 0xbbbeb305}, {2, 0xfe1c810a},
  72 };
  73
  74 CBlockIndex CreateBlockIndex(int nHeight)
  75 {
  76     CBlockIndex index;
  77     index.nHeight = nHeight;
  78     index.pprev = chainActive.Tip();
  79     return index;
  80 }
  81
  82 bool TestSequenceLocks(const CTransaction &tx, int flags)
  83 {
  84     LOCK(mempool.cs);
  85     return CheckSequenceLocks(tx, flags);
  86 }
  87
  88 // Test suite for ancestor feerate transaction selection.
  89 // Implemented as an additional function, rather than a separate test case,
  90 // to allow reusing the blockchain created in CreateNewBlock_validity.
  91 void TestPackageSelection(const CChainParams& chainparams, CScript scriptPubKey, std::vector<CTransactionRef>& txFirst)
  92 {
  93     // Test the ancestor feerate transaction selection.
  94     TestMemPoolEntryHelper entry;
  95
  96     // Test that a medium fee transaction will be selected after a higher fee
  97     // rate package with a low fee rate parent.
  98     CMutableTransaction tx;
  99     tx.vin.resize(1);
 100     tx.vin[0].scriptSig = CScript() << OP_1;
 101     tx.vin[0].prevout.hash = txFirst[0]->GetHash();
 102     tx.vin[0].prevout.n = 0;
 103     tx.vout.resize(1);
 104     tx.vout[0].nValue = 5000000000LL - 1000;
 105     // This tx has a low fee: 1000 satoshis
 106     uint256 hashParentTx = tx.GetHash(); // save this txid for later use
 107     mempool.addUnchecked(hashParentTx, entry.Fee(1000).Time(GetTime()).SpendsCoinbase(true).FromTx(tx));
 108
 109     // This tx has a medium fee: 10000 satoshis
 110     tx.vin[0].prevout.hash = txFirst[1]->GetHash();
 111     tx.vout[0].nValue = 5000000000LL - 10000;
 112     uint256 hashMediumFeeTx = tx.GetHash();
 113     mempool.addUnchecked(hashMediumFeeTx, entry.Fee(10000).Time(GetTime()).SpendsCoinbase(true).FromTx(tx));
 114
 115     // This tx has a high fee, but depends on the first transaction
 116     tx.vin[0].prevout.hash = hashParentTx;
 117     tx.vout[0].nValue = 5000000000LL - 1000 - 50000; // 50k satoshi fee
 118     uint256 hashHighFeeTx = tx.GetHash();
 119     mempool.addUnchecked(hashHighFeeTx, entry.Fee(50000).Time(GetTime()).SpendsCoinbase(false).FromTx(tx));
 120
 121     std::unique_ptr<CBlockTemplate> pblocktemplate = AssemblerForTest(chainparams).CreateNewBlock(scriptPubKey);
 122     BOOST_CHECK(pblocktemplate->block.vtx[1]->GetHash() == hashParentTx);
 123     BOOST_CHECK(pblocktemplate->block.vtx[2]->GetHash() == hashHighFeeTx);
 124     BOOST_CHECK(pblocktemplate->block.vtx[3]->GetHash() == hashMediumFeeTx);
 125
 126     // Test that a package below the block min tx fee doesn't get included
 127     tx.vin[0].prevout.hash = hashHighFeeTx;
 128     tx.vout[0].nValue = 5000000000LL - 1000 - 50000; // 0 fee
 129     uint256 hashFreeTx = tx.GetHash();
 130     mempool.addUnchecked(hashFreeTx, entry.Fee(0).FromTx(tx));
 131     size_t freeTxSize = ::GetSerializeSize(tx, SER_NETWORK, PROTOCOL_VERSION);
 132
 133     // Calculate a fee on child transaction that will put the package just
 134     // below the block min tx fee (assuming 1 child tx of the same size).
 135     CAmount feeToUse = blockMinFeeRate.GetFee(2*freeTxSize) - 1;
 136
 137     tx.vin[0].prevout.hash = hashFreeTx;
 138     tx.vout[0].nValue = 5000000000LL - 1000 - 50000 - feeToUse;
 139     uint256 hashLowFeeTx = tx.GetHash();
 140     mempool.addUnchecked(hashLowFeeTx, entry.Fee(feeToUse).FromTx(tx));
 141     pblocktemplate = AssemblerForTest(chainparams).CreateNewBlock(scriptPubKey);
 142     // Verify that the free tx and the low fee tx didn't get selected
 143     for (size_t i=0; i<pblocktemplate->block.vtx.size(); ++i) {
 144         BOOST_CHECK(pblocktemplate->block.vtx[i]->GetHash() != hashFreeTx);
 145         BOOST_CHECK(pblocktemplate->block.vtx[i]->GetHash() != hashLowFeeTx);
 146     }
 147
 148     // Test that packages above the min relay fee do get included, even if one
 149     // of the transactions is below the min relay fee
 150     // Remove the low fee transaction and replace with a higher fee transaction
 151     mempool.removeRecursive(tx);
 152     tx.vout[0].nValue -= 2; // Now we should be just over the min relay fee
 153     hashLowFeeTx = tx.GetHash();
 154     mempool.addUnchecked(hashLowFeeTx, entry.Fee(feeToUse+2).FromTx(tx));
 155     pblocktemplate = AssemblerForTest(chainparams).CreateNewBlock(scriptPubKey);
 156     BOOST_CHECK(pblocktemplate->block.vtx[4]->GetHash() == hashFreeTx);
 157     BOOST_CHECK(pblocktemplate->block.vtx[5]->GetHash() == hashLowFeeTx);
 158
 159     // Test that transaction selection properly updates ancestor fee
 160     // calculations as ancestor transactions get included in a block.
 161     // Add a 0-fee transaction that has 2 outputs.
 162     tx.vin[0].prevout.hash = txFirst[2]->GetHash();
 163     tx.vout.resize(2);
 164     tx.vout[0].nValue = 5000000000LL - 100000000;
 165     tx.vout[1].nValue = 100000000; // 1BTC output
 166     uint256 hashFreeTx2 = tx.GetHash();
 167     mempool.addUnchecked(hashFreeTx2, entry.Fee(0).SpendsCoinbase(true).FromTx(tx));
 168
 169     // This tx can't be mined by itself
 170     tx.vin[0].prevout.hash = hashFreeTx2;
 171     tx.vout.resize(1);
 172     feeToUse = blockMinFeeRate.GetFee(freeTxSize);
 173     tx.vout[0].nValue = 5000000000LL - 100000000 - feeToUse;
 174     uint256 hashLowFeeTx2 = tx.GetHash();
 175     mempool.addUnchecked(hashLowFeeTx2, entry.Fee(feeToUse).SpendsCoinbase(false).FromTx(tx));
 176     pblocktemplate = AssemblerForTest(chainparams).CreateNewBlock(scriptPubKey);
 177
 178     // Verify that this tx isn't selected.
 179     for (size_t i=0; i<pblocktemplate->block.vtx.size(); ++i) {
 180         BOOST_CHECK(pblocktemplate->block.vtx[i]->GetHash() != hashFreeTx2);
 181         BOOST_CHECK(pblocktemplate->block.vtx[i]->GetHash() != hashLowFeeTx2);
 182     }
 183
 184     // This tx will be mineable, and should cause hashLowFeeTx2 to be selected
 185     // as well.
 186     tx.vin[0].prevout.n = 1;
 187     tx.vout[0].nValue = 100000000 - 10000; // 10k satoshi fee
 188     mempool.addUnchecked(tx.GetHash(), entry.Fee(10000).FromTx(tx));
 189     pblocktemplate = AssemblerForTest(chainparams).CreateNewBlock(scriptPubKey);
 190     BOOST_CHECK(pblocktemplate->block.vtx[8]->GetHash() == hashLowFeeTx2);
 191 }
 192
 193 // NOTE: These tests rely on CreateNewBlock doing its own self-validation!
 194 BOOST_AUTO_TEST_CASE(CreateNewBlock_validity)
 195 {
 196     // Note that by default, these tests run with size accounting enabled.
 197     const auto chainParams = CreateChainParams(CBaseChainParams::MAIN);
 198     const CChainParams& chainparams = *chainParams;
 199     CScript scriptPubKey = CScript() << ParseHex("04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5f") << OP_CHECKSIG;
 200     std::unique_ptr<CBlockTemplate> pblocktemplate;
 201     CMutableTransaction tx,tx2;
 202     CScript script;
 203     uint256 hash;
 204     TestMemPoolEntryHelper entry;
 205     entry.nFee = 11;
 206     entry.nHeight = 11;
 207
 208     LOCK(cs_main);
 209     fCheckpointsEnabled = false;
 210
 211     // Simple block creation, nothing special yet:
 212     BOOST_CHECK(pblocktemplate = AssemblerForTest(chainparams).CreateNewBlock(scriptPubKey));
 213
 214     // We can't make transactions until we have inputs
 215     // Therefore, load 100 blocks :)
 216     int baseheight = 0;
 217     std::vector<CTransactionRef> txFirst;
 218     for (unsigned int i = 0; i < sizeof(blockinfo)/sizeof(*blockinfo); ++i)
 219     {
 220         CBlock *pblock = &pblocktemplate->block; // pointer for convenience
 221         pblock->nVersion = 1;
 222         pblock->nTime = chainActive.Tip()->GetMedianTimePast()+1;
 223         CMutableTransaction txCoinbase(*pblock->vtx[0]);
 224         txCoinbase.nVersion = 1;
 225         txCoinbase.vin[0].scriptSig = CScript();
 226         txCoinbase.vin[0].scriptSig.push_back(blockinfo[i].extranonce);
 227         txCoinbase.vin[0].scriptSig.push_back(chainActive.Height());
 228         txCoinbase.vout.resize(1); // Ignore the (optional) segwit commitment added by CreateNewBlock (as the hardcoded nonces don't account for this)
 229         txCoinbase.vout[0].scriptPubKey = CScript();
 230         pblock->vtx[0] = MakeTransactionRef(std::move(txCoinbase));
 231         if (txFirst.size() == 0)
 232             baseheight = chainActive.Height();
 233         if (txFirst.size() < 4)
 234             txFirst.push_back(pblock->vtx[0]);
 235         pblock->hashMerkleRoot = BlockMerkleRoot(*pblock);
 236         pblock->nNonce = blockinfo[i].nonce;
 237         std::shared_ptr<const CBlock> shared_pblock = std::make_shared<const CBlock>(*pblock);
 238         BOOST_CHECK(ProcessNewBlock(chainparams, shared_pblock, true, nullptr));
 239         pblock->hashPrevBlock = pblock->GetHash();
 240     }
 241
 242     // Just to make sure we can still make simple blocks
 243     BOOST_CHECK(pblocktemplate = AssemblerForTest(chainparams).CreateNewBlock(scriptPubKey));
 244
 245     const CAmount BLOCKSUBSIDY = 50*COIN;
 246     const CAmount LOWFEE = CENT;
 247     const CAmount HIGHFEE = COIN;
 248     const CAmount HIGHERFEE = 4*COIN;
 249
 250     // block sigops > limit: 1000 CHECKMULTISIG + 1
 251     tx.vin.resize(1);
 252     // NOTE: OP_NOP is used to force 20 SigOps for the CHECKMULTISIG
 253     tx.vin[0].scriptSig = CScript() << OP_0 << OP_0 << OP_0 << OP_NOP << OP_CHECKMULTISIG << OP_1;
 254     tx.vin[0].prevout.hash = txFirst[0]->GetHash();
 255     tx.vin[0].prevout.n = 0;
 256     tx.vout.resize(1);
 257     tx.vout[0].nValue = BLOCKSUBSIDY;
 258     for (unsigned int i = 0; i < 1001; ++i)
 259     {
 260         tx.vout[0].nValue -= LOWFEE;
 261         hash = tx.GetHash();
 262         bool spendsCoinbase = i == 0; // only first tx spends coinbase
 263         // If we don't set the # of sig ops in the CTxMemPoolEntry, template creation fails
 264         mempool.addUnchecked(hash, entry.Fee(LOWFEE).Time(GetTime()).SpendsCoinbase(spendsCoinbase).FromTx(tx));
 265         tx.vin[0].prevout.hash = hash;
 266     }
 267     BOOST_CHECK_THROW(AssemblerForTest(chainparams).CreateNewBlock(scriptPubKey), std::runtime_error);
 268     mempool.clear();
 269
 270     tx.vin[0].prevout.hash = txFirst[0]->GetHash();
 271     tx.vout[0].nValue = BLOCKSUBSIDY;
 272     for (unsigned int i = 0; i < 1001; ++i)
 273     {
 274         tx.vout[0].nValue -= LOWFEE;
 275         hash = tx.GetHash();
 276         bool spendsCoinbase = i == 0; // only first tx spends coinbase
 277         // If we do set the # of sig ops in the CTxMemPoolEntry, template creation passes
 278         mempool.addUnchecked(hash, entry.Fee(LOWFEE).Time(GetTime()).SpendsCoinbase(spendsCoinbase).SigOpsCost(80).FromTx(tx));
 279         tx.vin[0].prevout.hash = hash;
 280     }
 281     BOOST_CHECK(pblocktemplate = AssemblerForTest(chainparams).CreateNewBlock(scriptPubKey));
 282     mempool.clear();
 283
 284     // block size > limit
 285     tx.vin[0].scriptSig = CScript();
 286     // 18 * (520char + DROP) + OP_1 = 9433 bytes
 287     std::vector<unsigned char> vchData(520);
 288     for (unsigned int i = 0; i < 18; ++i)
 289         tx.vin[0].scriptSig << vchData << OP_DROP;
 290     tx.vin[0].scriptSig << OP_1;
 291     tx.vin[0].prevout.hash = txFirst[0]->GetHash();
 292     tx.vout[0].nValue = BLOCKSUBSIDY;
 293     for (unsigned int i = 0; i < 128; ++i)
 294     {
 295         tx.vout[0].nValue -= LOWFEE;
 296         hash = tx.GetHash();
 297         bool spendsCoinbase = i == 0; // only first tx spends coinbase
 298         mempool.addUnchecked(hash, entry.Fee(LOWFEE).Time(GetTime()).SpendsCoinbase(spendsCoinbase).FromTx(tx));
 299         tx.vin[0].prevout.hash = hash;
 300     }
 301     BOOST_CHECK(pblocktemplate = AssemblerForTest(chainparams).CreateNewBlock(scriptPubKey));
 302     mempool.clear();
 303
 304     // orphan in mempool, template creation fails
 305     hash = tx.GetHash();
 306     mempool.addUnchecked(hash, entry.Fee(LOWFEE).Time(GetTime()).FromTx(tx));
 307     BOOST_CHECK_THROW(AssemblerForTest(chainparams).CreateNewBlock(scriptPubKey), std::runtime_error);
 308     mempool.clear();
 309
 310     // child with higher feerate than parent
 311     tx.vin[0].scriptSig = CScript() << OP_1;
 312     tx.vin[0].prevout.hash = txFirst[1]->GetHash();
 313     tx.vout[0].nValue = BLOCKSUBSIDY-HIGHFEE;
 314     hash = tx.GetHash();
 315     mempool.addUnchecked(hash, entry.Fee(HIGHFEE).Time(GetTime()).SpendsCoinbase(true).FromTx(tx));
 316     tx.vin[0].prevout.hash = hash;
 317     tx.vin.resize(2);
 318     tx.vin[1].scriptSig = CScript() << OP_1;
 319     tx.vin[1].prevout.hash = txFirst[0]->GetHash();
 320     tx.vin[1].prevout.n = 0;
 321     tx.vout[0].nValue = tx.vout[0].nValue+BLOCKSUBSIDY-HIGHERFEE; //First txn output + fresh coinbase - new txn fee
 322     hash = tx.GetHash();
 323     mempool.addUnchecked(hash, entry.Fee(HIGHERFEE).Time(GetTime()).SpendsCoinbase(true).FromTx(tx));
 324     BOOST_CHECK(pblocktemplate = AssemblerForTest(chainparams).CreateNewBlock(scriptPubKey));
 325     mempool.clear();
 326
 327     // coinbase in mempool, template creation fails
 328     tx.vin.resize(1);
 329     tx.vin[0].prevout.SetNull();
 330     tx.vin[0].scriptSig = CScript() << OP_0 << OP_1;
 331     tx.vout[0].nValue = 0;
 332     hash = tx.GetHash();
 333     // give it a fee so it'll get mined
 334     mempool.addUnchecked(hash, entry.Fee(LOWFEE).Time(GetTime()).SpendsCoinbase(false).FromTx(tx));
 335     BOOST_CHECK_THROW(AssemblerForTest(chainparams).CreateNewBlock(scriptPubKey), std::runtime_error);
 336     mempool.clear();
 337
 338     // double spend txn pair in mempool, template creation fails
 339     tx.vin[0].prevout.hash = txFirst[0]->GetHash();
 340     tx.vin[0].scriptSig = CScript() << OP_1;
 341     tx.vout[0].nValue = BLOCKSUBSIDY-HIGHFEE;
 342     tx.vout[0].scriptPubKey = CScript() << OP_1;
 343     hash = tx.GetHash();
 344     mempool.addUnchecked(hash, entry.Fee(HIGHFEE).Time(GetTime()).SpendsCoinbase(true).FromTx(tx));
 345     tx.vout[0].scriptPubKey = CScript() << OP_2;
 346     hash = tx.GetHash();
 347     mempool.addUnchecked(hash, entry.Fee(HIGHFEE).Time(GetTime()).SpendsCoinbase(true).FromTx(tx));
 348     BOOST_CHECK_THROW(AssemblerForTest(chainparams).CreateNewBlock(scriptPubKey), std::runtime_error);
 349     mempool.clear();
 350
 351     // subsidy changing
 352     int nHeight = chainActive.Height();
 353     // Create an actual 209999-long block chain (without valid blocks).
 354     while (chainActive.Tip()->nHeight < 209999) {
 355         CBlockIndex* prev = chainActive.Tip();
 356         CBlockIndex* next = new CBlockIndex();
 357         next->phashBlock = new uint256(InsecureRand256());
 358         pcoinsTip->SetBestBlock(next->GetBlockHash());
 359         next->pprev = prev;
 360         next->nHeight = prev->nHeight + 1;
 361         next->BuildSkip();
 362         chainActive.SetTip(next);
 363     }
 364     BOOST_CHECK(pblocktemplate = AssemblerForTest(chainparams).CreateNewBlock(scriptPubKey));
 365     // Extend to a 210000-long block chain.
 366     while (chainActive.Tip()->nHeight < 210000) {
 367         CBlockIndex* prev = chainActive.Tip();
 368         CBlockIndex* next = new CBlockIndex();
 369         next->phashBlock = new uint256(InsecureRand256());
 370         pcoinsTip->SetBestBlock(next->GetBlockHash());
 371         next->pprev = prev;
 372         next->nHeight = prev->nHeight + 1;
 373         next->BuildSkip();
 374         chainActive.SetTip(next);
 375     }
 376     BOOST_CHECK(pblocktemplate = AssemblerForTest(chainparams).CreateNewBlock(scriptPubKey));
 377
 378     // invalid p2sh txn in mempool, template creation fails
 379     tx.vin[0].prevout.hash = txFirst[0]->GetHash();
 380     tx.vin[0].prevout.n = 0;
 381     tx.vin[0].scriptSig = CScript() << OP_1;
 382     tx.vout[0].nValue = BLOCKSUBSIDY-LOWFEE;
 383     script = CScript() << OP_0;
 384     tx.vout[0].scriptPubKey = GetScriptForDestination(CScriptID(script));
 385     hash = tx.GetHash();
 386     mempool.addUnchecked(hash, entry.Fee(LOWFEE).Time(GetTime()).SpendsCoinbase(true).FromTx(tx));
 387     tx.vin[0].prevout.hash = hash;
 388     tx.vin[0].scriptSig = CScript() << std::vector<unsigned char>(script.begin(), script.end());
 389     tx.vout[0].nValue -= LOWFEE;
 390     hash = tx.GetHash();
 391     mempool.addUnchecked(hash, entry.Fee(LOWFEE).Time(GetTime()).SpendsCoinbase(false).FromTx(tx));
 392     BOOST_CHECK_THROW(AssemblerForTest(chainparams).CreateNewBlock(scriptPubKey), std::runtime_error);
 393     mempool.clear();
 394
 395     // Delete the dummy blocks again.
 396     while (chainActive.Tip()->nHeight > nHeight) {
 397         CBlockIndex* del = chainActive.Tip();
 398         chainActive.SetTip(del->pprev);
 399         pcoinsTip->SetBestBlock(del->pprev->GetBlockHash());
 400         delete del->phashBlock;
 401         delete del;
 402     }
 403
 404     // non-final txs in mempool
 405     SetMockTime(chainActive.Tip()->GetMedianTimePast()+1);
 406     int flags = LOCKTIME_VERIFY_SEQUENCE|LOCKTIME_MEDIAN_TIME_PAST;
 407     // height map
 408     std::vector<int> prevheights;
 409
 410     // relative height locked
 411     tx.nVersion = 2;
 412     tx.vin.resize(1);
 413     prevheights.resize(1);
 414     tx.vin[0].prevout.hash = txFirst[0]->GetHash(); // only 1 transaction
 415     tx.vin[0].prevout.n = 0;
 416     tx.vin[0].scriptSig = CScript() << OP_1;
 417     tx.vin[0].nSequence = chainActive.Tip()->nHeight + 1; // txFirst[0] is the 2nd block
 418     prevheights[0] = baseheight + 1;
 419     tx.vout.resize(1);
 420     tx.vout[0].nValue = BLOCKSUBSIDY-HIGHFEE;
 421     tx.vout[0].scriptPubKey = CScript() << OP_1;
 422     tx.nLockTime = 0;
 423     hash = tx.GetHash();
 424     mempool.addUnchecked(hash, entry.Fee(HIGHFEE).Time(GetTime()).SpendsCoinbase(true).FromTx(tx));
 425     BOOST_CHECK(CheckFinalTx(tx, flags)); // Locktime passes
 426     BOOST_CHECK(!TestSequenceLocks(tx, flags)); // Sequence locks fail
 427     BOOST_CHECK(SequenceLocks(tx, flags, &prevheights, CreateBlockIndex(chainActive.Tip()->nHeight + 2))); // Sequence locks pass on 2nd block
 428
 429     // relative time locked
 430     tx.vin[0].prevout.hash = txFirst[1]->GetHash();
 431     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
 432     prevheights[0] = baseheight + 2;
 433     hash = tx.GetHash();
 434     mempool.addUnchecked(hash, entry.Time(GetTime()).FromTx(tx));
 435     BOOST_CHECK(CheckFinalTx(tx, flags)); // Locktime passes
 436     BOOST_CHECK(!TestSequenceLocks(tx, flags)); // Sequence locks fail
 437
 438     for (int i = 0; i < CBlockIndex::nMedianTimeSpan; i++)
 439         chainActive.Tip()->GetAncestor(chainActive.Tip()->nHeight - i)->nTime += 512; //Trick the MedianTimePast
 440     BOOST_CHECK(SequenceLocks(tx, flags, &prevheights, CreateBlockIndex(chainActive.Tip()->nHeight + 1))); // Sequence locks pass 512 seconds later
 441     for (int i = 0; i < CBlockIndex::nMedianTimeSpan; i++)
 442         chainActive.Tip()->GetAncestor(chainActive.Tip()->nHeight - i)->nTime -= 512; //undo tricked MTP
 443
 444     // absolute height locked
 445     tx.vin[0].prevout.hash = txFirst[2]->GetHash();
 446     tx.vin[0].nSequence = CTxIn::SEQUENCE_FINAL - 1;
 447     prevheights[0] = baseheight + 3;
 448     tx.nLockTime = chainActive.Tip()->nHeight + 1;
 449     hash = tx.GetHash();
 450     mempool.addUnchecked(hash, entry.Time(GetTime()).FromTx(tx));
 451     BOOST_CHECK(!CheckFinalTx(tx, flags)); // Locktime fails
 452     BOOST_CHECK(TestSequenceLocks(tx, flags)); // Sequence locks pass
 453     BOOST_CHECK(IsFinalTx(tx, chainActive.Tip()->nHeight + 2, chainActive.Tip()->GetMedianTimePast())); // Locktime passes on 2nd block
 454
 455     // absolute time locked
 456     tx.vin[0].prevout.hash = txFirst[3]->GetHash();
 457     tx.nLockTime = chainActive.Tip()->GetMedianTimePast();
 458     prevheights.resize(1);
 459     prevheights[0] = baseheight + 4;
 460     hash = tx.GetHash();
 461     mempool.addUnchecked(hash, entry.Time(GetTime()).FromTx(tx));
 462     BOOST_CHECK(!CheckFinalTx(tx, flags)); // Locktime fails
 463     BOOST_CHECK(TestSequenceLocks(tx, flags)); // Sequence locks pass
 464     BOOST_CHECK(IsFinalTx(tx, chainActive.Tip()->nHeight + 2, chainActive.Tip()->GetMedianTimePast() + 1)); // Locktime passes 1 second later
 465
 466     // mempool-dependent transactions (not added)
 467     tx.vin[0].prevout.hash = hash;
 468     prevheights[0] = chainActive.Tip()->nHeight + 1;
 469     tx.nLockTime = 0;
 470     tx.vin[0].nSequence = 0;
 471     BOOST_CHECK(CheckFinalTx(tx, flags)); // Locktime passes
 472     BOOST_CHECK(TestSequenceLocks(tx, flags)); // Sequence locks pass
 473     tx.vin[0].nSequence = 1;
 474     BOOST_CHECK(!TestSequenceLocks(tx, flags)); // Sequence locks fail
 475     tx.vin[0].nSequence = CTxIn::SEQUENCE_LOCKTIME_TYPE_FLAG;
 476     BOOST_CHECK(TestSequenceLocks(tx, flags)); // Sequence locks pass
 477     tx.vin[0].nSequence = CTxIn::SEQUENCE_LOCKTIME_TYPE_FLAG | 1;
 478     BOOST_CHECK(!TestSequenceLocks(tx, flags)); // Sequence locks fail
 479
 480     BOOST_CHECK(pblocktemplate = AssemblerForTest(chainparams).CreateNewBlock(scriptPubKey));
 481
 482     // None of the of the absolute height/time locked tx should have made
 483     // it into the template because we still check IsFinalTx in CreateNewBlock,
 484     // but relative locked txs will if inconsistently added to mempool.
 485     // For now these will still generate a valid template until BIP68 soft fork
 486     BOOST_CHECK_EQUAL(pblocktemplate->block.vtx.size(), 3);
 487     // However if we advance height by 1 and time by 512, all of them should be mined
 488     for (int i = 0; i < CBlockIndex::nMedianTimeSpan; i++)
 489         chainActive.Tip()->GetAncestor(chainActive.Tip()->nHeight - i)->nTime += 512; //Trick the MedianTimePast
 490     chainActive.Tip()->nHeight++;
 491     SetMockTime(chainActive.Tip()->GetMedianTimePast() + 1);
 492
 493     BOOST_CHECK(pblocktemplate = AssemblerForTest(chainparams).CreateNewBlock(scriptPubKey));
 494     BOOST_CHECK_EQUAL(pblocktemplate->block.vtx.size(), 5);
 495
 496     chainActive.Tip()->nHeight--;
 497     SetMockTime(0);
 498     mempool.clear();
 499
 500     TestPackageSelection(chainparams, scriptPubKey, txFirst);
 501
 502     fCheckpointsEnabled = true;
 503 }
 504
 505 BOOST_AUTO_TEST_SUITE_END()