lbrycrd/src/test/miner_tests.cpp

// 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 "main.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_bitcoin.h"
#include <cstdio>
#include <boost/test/unit_test.hpp>

BOOST_FIXTURE_TEST_SUITE(miner_tests, TestingSetup)

/*static
struct {
    unsigned char extranonce;
    unsigned int nonce;
} blockinfo[] = {
    {4, 0xa4a3e223}, {2, 0x15c32f9e}, {1, 0x0375b547}, {1, 0x7004a8a5},
    {2, 0xce440296}, {2, 0x52cfe198}, {1, 0x77a72cd0}, {2, 0xbb5d6f84},
    {2, 0x83f30c2c}, {1, 0x48a73d5b}, {1, 0xef7dcd01}, {2, 0x6809c6c4},
    {2, 0x0883ab3c}, {1, 0x087bbbe2}, {2, 0x2104a814}, {2, 0xdffb6daa},
    {1, 0xee8a0a08}, {2, 0xba4237c1}, {1, 0xa70349dc}, {1, 0x344722bb},
    {3, 0xd6294733}, {2, 0xec9f5c94}, {2, 0xca2fbc28}, {1, 0x6ba4f406},
    {2, 0x015d4532}, {1, 0x6e119b7c}, {2, 0x43e8f314}, {2, 0x27962f38},
    {2, 0xb571b51b}, {2, 0xb36bee23}, {2, 0xd17924a8}, {2, 0x6bc212d9},
    {1, 0x630d4948}, {2, 0x9a4c4ebb}, {2, 0x554be537}, {1, 0xd63ddfc7},
    {2, 0xa10acc11}, {1, 0x759a8363}, {2, 0xfb73090d}, {1, 0xe82c6a34},
    {1, 0xe33e92d7}, {3, 0x658ef5cb}, {2, 0xba32ff22}, {5, 0x0227a10c},
    {1, 0xa9a70155}, {5, 0xd096d809}, {1, 0x37176174}, {1, 0x830b8d0f},
    {1, 0xc6e3910e}, {2, 0x823f3ca8}, {1, 0x99850849}, {1, 0x7521fb81},
    {1, 0xaacaabab}, {1, 0xd645a2eb}, {5, 0x7aea1781}, {5, 0x9d6e4b78},
    {1, 0x4ce90fd8}, {1, 0xabdc832d}, {6, 0x4a34f32a}, {2, 0xf2524c1c},
    {2, 0x1bbeb08a}, {1, 0xad47f480}, {1, 0x9f026aeb}, {1, 0x15a95049},
    {2, 0xd1cb95b2}, {2, 0xf84bbda5}, {1, 0x0fa62cd1}, {1, 0xe05f9169},
    {1, 0x78d194a9}, {5, 0x3e38147b}, {5, 0x737ba0d4}, {1, 0x63378e10},
    {1, 0x6d5f91cf}, {2, 0x88612eb8}, {2, 0xe9639484}, {1, 0xb7fabc9d},
    {2, 0x19b01592}, {1, 0x5a90dd31}, {2, 0x5bd7e028}, {2, 0x94d00323},
    {1, 0xa9b9c01a}, {1, 0x3a40de61}, {1, 0x56e7eec7}, {5, 0x859f7ef6},
    {1, 0xfd8e5630}, {1, 0x2b0c9f7f}, {1, 0xba700e26}, {1, 0x7170a408},
    {1, 0x70de86a8}, {1, 0x74d64cd5}, {1, 0x49e738a1}, {2, 0x6910b602},
    {0, 0x643c565f}, {1, 0x54264b3f}, {2, 0x97ea6396}, {2, 0x55174459},
    {2, 0x03e8779a}, {1, 0x98f34d8f}, {1, 0xc07b2b07}, {1, 0xdfe29668},
    {1, 0x3141c7c1}, {1, 0xb3b595f4}, {1, 0x735abf08}, {5, 0x623bfbce},
    {2, 0xd351e722}, {1, 0xf4ca48c9}, {1, 0x5b19c670}, {1, 0xa164bf0e},
    {2, 0xbbbeb305}, {2, 0xfe1c810a},
};*/

/*static
struct {
    unsigned char extranonce;
    unsigned int nonce;
} blockinfo[] = {
    {4, 0x00000000}, {2, 0x00000001}, {1, 0x00000002}, {1, 0x00000000}, //0
    {2, 0x00000001}, {2, 0x00000001}, {1, 0x00000001}, {2, 0x00000000}, //4
    {2, 0x00000001}, {1, 0x00000000}, {1, 0x00000001}, {2, 0x00000001}, //8
    {2, 0x00000003}, {1, 0x00000001}, {2, 0x00000001}, {2, 0x00000001}, //12
    {1, 0x00000001}, {2, 0x00000000}, {1, 0x00000005}, {1, 0x00000001}, //16
    {3, 0x00000000}, {2, 0x00000000}, {2, 0x00000000}, {1, 0x00000004}, //20
    {2, 0x00000000}, {1, 0x00000000}, {2, 0x00000002}, {2, 0x00000003}, //24
    {2, 0x00000001}, {2, 0x00000001}, {2, 0x00000000}, {2, 0x00000000}, //28
    {1, 0x00000001}, {2, 0x00000000}, {2, 0x00000001}, {1, 0x00000000}, //32
    {2, 0x00000000}, {1, 0x00000001}, {2, 0x00000000}, {1, 0x00000000}, //36
    {1, 0x00000000}, {3, 0x00000000}, {2, 0x00000005}, {5, 0x00000000}, //40
    {1, 0x00000002}, {5, 0x00000001}, {1, 0x00000001}, {1, 0x00000001}, //44
    {1, 0x00000001}, {2, 0x00000002}, {1, 0x00000002}, {1, 0x00000001}, //48
    {1, 0x00000000}, {1, 0x00000000}, {5, 0x00000002}, {5, 0x00000000}, //52
    {1, 0x00000000}, {1, 0x00000000}, {6, 0x00000001}, {2, 0x00000000}, //56
    {2, 0x00000003}, {1, 0x00000000}, {1, 0x00000000}, {1, 0x00000000}, //60
    {2, 0x00000000}, {2, 0x00000001}, {1, 0x00000000}, {1, 0x00000001}, //64
    {1, 0x00000003}, {5, 0x00000000}, {5, 0x00000000}, {1, 0x00000002}, //68
    {1, 0x00000000}, {2, 0x00000001}, {2, 0x00000004}, {1, 0x00000000}, //72
    {2, 0x00000001}, {1, 0x00000002}, {2, 0x00000004}, {2, 0x00000000}, //76
    {1, 0x00000000}, {1, 0x00000002}, {1, 0x00000000}, {5, 0x00000002}, //80
    {1, 0x00000001}, {1, 0x00000003}, {1, 0x00000000}, {1, 0x00000002}, //84
    {1, 0x00000000}, {1, 0x00000000}, {1, 0x00000002}, {2, 0x00000000}, //88
    {0, 0x00000000}, {1, 0x00000000}, {2, 0x00000001}, {2, 0x00000001}, //92
    {2, 0x00000000}, {1, 0x00000000}, {1, 0x00000000}, {1, 0x00000000}, //96
    {1, 0x00000000}, {1, 0x00000000}, {1, 0x00000000}, {5, 0x00000000}, //100
    {2, 0x00000000}, {1, 0x00000002}, {1, 0x00000000}, {1, 0x00000001}, //104
    {2, 0x00000003}, {2, 0x00000000},                                   //108
};*/

const unsigned int nonces[] = {
9875, 95807, 31359, 234335, 145717, 80791, 112145, 24413, 180722, 9910,
43622, 8531, 6247, 21164, 31399, 115014, 6240, 11855, 15380, 16059,
151773, 42247, 258112, 33467, 66678, 118631, 31485, 53636, 74882, 4123,
86392, 11386, 58121, 27870, 76602, 17616, 80966, 37064, 84547, 58182,
169550, 11965, 63424, 245620, 4710, 6134, 77310, 100050, 134882, 44029,
3970, 175316, 56994, 23523, 12055, 15866, 25422, 71227, 105999, 107878,
75188, 17820, 54863, 74022, 81834, 121376, 67397, 10857, 22081, 33061,
65027, 46272, 56681, 1209, 151028, 82788, 7817, 92273, 55392, 15714,
94174, 21541, 33833, 30596, 93204, 53265, 51495, 59980, 91955, 57202,
40559, 23761, 75982, 4582, 3207, 109694, 12944, 93689, 47593, 20997,
194095, 112324, 146676, 66180, 33360, 140817, 731, 19918, 31681, 19541,
};

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;

    // 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 < 110; ++i)
    {
        BOOST_CHECK(pblocktemplate = CreateNewBlock(chainparams, scriptPubKey));
        CBlock *pblock = &pblocktemplate->block; // pointer for convenience
        pblock->hashPrevBlock = chainActive.Tip()->GetBlockHash();
        pblock->nVersion = 1;
        pblock->nTime = chainActive.Tip()->GetBlockTime()+chainparams.GetConsensus().nPowTargetSpacing;
        CMutableTransaction txCoinbase(pblock->vtx[0]);
        txCoinbase.nVersion = 1;
        txCoinbase.vin[0].scriptSig = CScript();
        txCoinbase.vin[0].scriptSig.push_back(0);
        txCoinbase.vin[0].scriptSig.push_back(chainActive.Height());
        txCoinbase.vout[0].scriptPubKey = CScript();
        txCoinbase.vout[0].nValue = GetBlockSubsidy(chainActive.Height() + 1, Params().GetConsensus());
        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 = nonces[i];

        //#define NEED_NEW_NONCES_MINER_TEST
        //Use below code to find nonces, in case we change hashing or difficulty retargeting algo
        #ifdef NEED_NEW_NONCES_MINER_TEST
                
        bool fFound = false;

        for (int j = 0; !fFound; j++)
        {
            pblock->nNonce = j;
            if (CheckProofOfWork(pblock->GetPoWHash(), pblock->nBits, Params().GetConsensus()))
            {
                fFound = true;
                std::cout << pblock->nNonce << ",";
                if ((i + 1) % 10 == 0)
                    std::cout << std::endl;
                else
                    std::cout << " ";
            }
        } 
        #endif

        CValidationState state;
        BOOST_CHECK(ProcessNewBlock(state, chainparams, NULL, pblock, true, NULL));
        BOOST_CHECK(state.IsValid());
        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 = 50000000LL;
    for (unsigned int i = 0; i < 1001; ++i)
    {
        tx.vout[0].nValue -= 100;
        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(100000).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 = 50000000LL;
    for (unsigned int i = 0; i < 1001; ++i)
    {
        tx.vout[0].nValue -= 100;
        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(50000).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 = 500000LL;
    for (unsigned int i = 0; i < 128; ++i)
    {
        tx.vout[0].nValue -= 100;
        hash = tx.GetHash();
        bool spendsCoinbase = (i == 0) ? true : false; // only first tx spends coinbase
        mempool.addUnchecked(hash, entry.Fee(100000).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 = 49000000LL;
    hash = tx.GetHash();
    mempool.addUnchecked(hash, entry.Fee(1000000LL).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 = 59000000LL;
    hash = tx.GetHash();
    mempool.addUnchecked(hash, entry.Fee(4000000LL).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 = 49000000LL;
    script = CScript() << OP_0;
    tx.vout[0].scriptPubKey = GetScriptForDestination(CScriptID(script));
    hash = tx.GetHash();
    mempool.addUnchecked(hash, entry.Fee(10000000L).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 -= 10000;
    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 = 49000000LL;
    tx.vout[0].scriptPubKey = CScript() << OP_1;
    hash = tx.GetHash();
    mempool.addUnchecked(hash, entry.Fee(100000000L).Time(GetTime()).SpendsCoinbase(true).FromTx(tx));
    tx.vout[0].scriptPubKey = CScript() << OP_2;
    hash = tx.GetHash();
    mempool.addUnchecked(hash, entry.Fee(100000000L).Time(GetTime()).SpendsCoinbase(true).FromTx(tx));
    BOOST_CHECK_THROW(CreateNewBlock(chainparams, scriptPubKey), std::runtime_error);
    mempool.clear();

    // 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 = 49000000LL;
    tx.vout[0].scriptPubKey = CScript() << OP_1;
    tx.nLockTime = 0;
    hash = tx.GetHash();
    mempool.addUnchecked(hash, entry.Fee(1000000L).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()