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miner_tests.cpp
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miner_tests.cpp
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// Copyright (c) 2011-2022 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 <addresstype.h>
#include <coins.h>
#include <common/system.h>
#include <consensus/consensus.h>
#include <consensus/merkle.h>
#include <consensus/tx_verify.h>
#include <node/miner.h>
#include <policy/policy.h>
#include <test/util/random.h>
#include <test/util/txmempool.h>
#include <txmempool.h>
#include <uint256.h>
#include <util/check.h>
#include <util/strencodings.h>
#include <util/time.h>
#include <util/translation.h>
#include <validation.h>
#include <versionbits.h>
#include <test/util/setup_common.h>
#include <memory>
#include <boost/test/unit_test.hpp>
using node::BlockAssembler;
using node::CBlockTemplate;
namespace miner_tests {
struct MinerTestingSetup : public TestingSetup {
void TestPackageSelection(const CScript& scriptPubKey, const std::vector<CTransactionRef>& txFirst) EXCLUSIVE_LOCKS_REQUIRED(::cs_main);
void TestBasicMining(const CScript& scriptPubKey, const std::vector<CTransactionRef>& txFirst, int baseheight) EXCLUSIVE_LOCKS_REQUIRED(::cs_main);
void TestPrioritisedMining(const CScript& scriptPubKey, const std::vector<CTransactionRef>& txFirst) EXCLUSIVE_LOCKS_REQUIRED(::cs_main);
bool TestSequenceLocks(const CTransaction& tx, CTxMemPool& tx_mempool) EXCLUSIVE_LOCKS_REQUIRED(::cs_main)
{
CCoinsViewMemPool view_mempool{&m_node.chainman->ActiveChainstate().CoinsTip(), tx_mempool};
CBlockIndex* tip{m_node.chainman->ActiveChain().Tip()};
const std::optional<LockPoints> lock_points{CalculateLockPointsAtTip(tip, view_mempool, tx)};
return lock_points.has_value() && CheckSequenceLocksAtTip(tip, *lock_points);
}
CTxMemPool& MakeMempool()
{
// Delete the previous mempool to ensure with valgrind that the old
// pointer is not accessed, when the new one should be accessed
// instead.
m_node.mempool.reset();
bilingual_str error;
m_node.mempool = std::make_unique<CTxMemPool>(MemPoolOptionsForTest(m_node), error);
Assert(error.empty());
return *m_node.mempool;
}
BlockAssembler AssemblerForTest(CTxMemPool& tx_mempool);
};
} // namespace miner_tests
BOOST_FIXTURE_TEST_SUITE(miner_tests, MinerTestingSetup)
static CFeeRate blockMinFeeRate = CFeeRate(DEFAULT_BLOCK_MIN_TX_FEE);
BlockAssembler MinerTestingSetup::AssemblerForTest(CTxMemPool& tx_mempool)
{
BlockAssembler::Options options;
options.nBlockMaxWeight = MAX_BLOCK_WEIGHT;
options.blockMinFeeRate = blockMinFeeRate;
return BlockAssembler{m_node.chainman->ActiveChainstate(), &tx_mempool, options};
}
constexpr static struct {
unsigned char extranonce;
unsigned int nonce;
} BLOCKINFO[]{{8, 95165741}, {0, 269764418}, {2, 399766948}, {6, 166010836}, {7, 146583835}, {8, 165502990},
{8, 193085722}, {2, 41168801}, {4, 59758515}, {1, 44649489}, {8, 136103646}, {4, 78705815},
{3, 5789907}, {8, 8263230}, {6, 9342912}, {5, 76947767}, {5, 157835320}, {4, 33788889},
{0, 472303519}, {5, 226993369}, {3, 117643788}, {2, 159442540}, {2, 24345247}, {7, 101182590},
{2, 7668815}, {0, 51962934}, {1, 146370400}, {6, 41225883}, {7, 356086520}, {4, 44212052},
{7, 147188897}, {6, 104363604}, {3, 164654416}, {2, 109796206}, {3, 325512454}, {8, 25879097},
{5, 58452291}, {3, 240489132}, {0, 29960516}, {3, 79843526}, {0, 66594384}, {2, 3101087},
{3, 83144872}, {2, 81819336}, {8, 44302465}, {2, 244992457}, {4, 648668148}, {8, 28769579},
{7, 21452358}, {3, 88152811}, {8, 154075431}, {4, 82293851}, {1, 122306334}, {6, 89007512},
{5, 24834232}, {3, 119488698}, {3, 74524234}, {0, 66096682}, {8, 38429174}, {5, 34206824},
{0, 138035298}, {6, 324108846}, {6, 47798975}, {6, 346498918}, {6, 10182173}, {5, 333276813},
{0, 49256233}, {6, 162761743}, {4, 132955121}, {8, 84612726}, {6, 36512919}, {6, 767037},
{6, 633280600}, {5, 58592832}, {8, 243519090}, {7, 189967116}, {3, 16413133}, {5, 168606313},
{2, 133705740}, {2, 5624906}, {6, 21301506}, {7, 175571718}, {4, 219063924}, {3, 14036123},
{4, 28457706}, {0, 78205856}, {6, 274373776}, {3, 255081761}, {5, 66506530}, {8, 181251287},
{4, 113148515}, {8, 43713152}, {6, 157258184}, {0, 164624880}, {7, 26630204}, {7, 81567551},
{2, 13733699}, {6, 328859947}, {7, 108097620}, {7, 175079887}, {4, 13417756}, {1, 84266645},
{0, 58971968}, {6, 620124186}, {6, 56100999}, {5, 71904575}, {6, 111129112}, {7, 106870224},
{8, 75917778}, {0, 138109370}};
static std::unique_ptr<CBlockIndex> CreateBlockIndex(int nHeight, CBlockIndex* active_chain_tip) EXCLUSIVE_LOCKS_REQUIRED(cs_main)
{
auto index{std::make_unique<CBlockIndex>()};
index->nHeight = nHeight;
index->pprev = active_chain_tip;
return index;
}
// Test suite for ancestor feerate transaction selection.
// Implemented as an additional function, rather than a separate test case,
// to allow reusing the blockchain created in CreateNewBlock_validity.
void MinerTestingSetup::TestPackageSelection(const CScript& scriptPubKey, const std::vector<CTransactionRef>& txFirst)
{
CTxMemPool& tx_mempool{MakeMempool()};
LOCK(tx_mempool.cs);
// Test the ancestor feerate transaction selection.
TestMemPoolEntryHelper entry;
// Test that a medium fee transaction will be selected after a higher fee
// rate package with a low fee rate parent.
CMutableTransaction tx;
tx.vin.resize(1);
tx.vin[0].scriptSig = CScript() << OP_1;
tx.vin[0].prevout.hash = txFirst[0]->GetHash();
tx.vin[0].prevout.n = 0;
tx.vout.resize(1);
tx.vout[0].nValue = 5000000000LL - 1000;
// This tx has a low fee: 1000 satoshis
Txid hashParentTx = tx.GetHash(); // save this txid for later use
tx_mempool.addUnchecked(entry.Fee(1000).Time(Now<NodeSeconds>()).SpendsCoinbase(true).FromTx(tx));
// This tx has a medium fee: 10000 satoshis
tx.vin[0].prevout.hash = txFirst[1]->GetHash();
tx.vout[0].nValue = 5000000000LL - 10000;
Txid hashMediumFeeTx = tx.GetHash();
tx_mempool.addUnchecked(entry.Fee(10000).Time(Now<NodeSeconds>()).SpendsCoinbase(true).FromTx(tx));
// This tx has a high fee, but depends on the first transaction
tx.vin[0].prevout.hash = hashParentTx;
tx.vout[0].nValue = 5000000000LL - 1000 - 50000; // 50k satoshi fee
Txid hashHighFeeTx = tx.GetHash();
tx_mempool.addUnchecked(entry.Fee(50000).Time(Now<NodeSeconds>()).SpendsCoinbase(false).FromTx(tx));
std::unique_ptr<CBlockTemplate> pblocktemplate = AssemblerForTest(tx_mempool).CreateNewBlock(scriptPubKey);
BOOST_REQUIRE_EQUAL(pblocktemplate->block.vtx.size(), 4U);
BOOST_CHECK(pblocktemplate->block.vtx[1]->GetHash() == hashParentTx);
BOOST_CHECK(pblocktemplate->block.vtx[2]->GetHash() == hashHighFeeTx);
BOOST_CHECK(pblocktemplate->block.vtx[3]->GetHash() == hashMediumFeeTx);
// Test that a package below the block min tx fee doesn't get included
tx.vin[0].prevout.hash = hashHighFeeTx;
tx.vout[0].nValue = 5000000000LL - 1000 - 50000; // 0 fee
Txid hashFreeTx = tx.GetHash();
tx_mempool.addUnchecked(entry.Fee(0).FromTx(tx));
size_t freeTxSize = ::GetSerializeSize(TX_WITH_WITNESS(tx));
// Calculate a fee on child transaction that will put the package just
// below the block min tx fee (assuming 1 child tx of the same size).
CAmount feeToUse = blockMinFeeRate.GetFee(2*freeTxSize) - 1;
tx.vin[0].prevout.hash = hashFreeTx;
tx.vout[0].nValue = 5000000000LL - 1000 - 50000 - feeToUse;
Txid hashLowFeeTx = tx.GetHash();
tx_mempool.addUnchecked(entry.Fee(feeToUse).FromTx(tx));
pblocktemplate = AssemblerForTest(tx_mempool).CreateNewBlock(scriptPubKey);
// Verify that the free tx and the low fee tx didn't get selected
for (size_t i=0; i<pblocktemplate->block.vtx.size(); ++i) {
BOOST_CHECK(pblocktemplate->block.vtx[i]->GetHash() != hashFreeTx);
BOOST_CHECK(pblocktemplate->block.vtx[i]->GetHash() != hashLowFeeTx);
}
// Test that packages above the min relay fee do get included, even if one
// of the transactions is below the min relay fee
// Remove the low fee transaction and replace with a higher fee transaction
tx_mempool.removeRecursive(CTransaction(tx), MemPoolRemovalReason::REPLACED);
tx.vout[0].nValue -= 2; // Now we should be just over the min relay fee
hashLowFeeTx = tx.GetHash();
tx_mempool.addUnchecked(entry.Fee(feeToUse + 2).FromTx(tx));
pblocktemplate = AssemblerForTest(tx_mempool).CreateNewBlock(scriptPubKey);
BOOST_REQUIRE_EQUAL(pblocktemplate->block.vtx.size(), 6U);
BOOST_CHECK(pblocktemplate->block.vtx[4]->GetHash() == hashFreeTx);
BOOST_CHECK(pblocktemplate->block.vtx[5]->GetHash() == hashLowFeeTx);
// Test that transaction selection properly updates ancestor fee
// calculations as ancestor transactions get included in a block.
// Add a 0-fee transaction that has 2 outputs.
tx.vin[0].prevout.hash = txFirst[2]->GetHash();
tx.vout.resize(2);
tx.vout[0].nValue = 5000000000LL - 100000000;
tx.vout[1].nValue = 100000000; // 1BTC output
Txid hashFreeTx2 = tx.GetHash();
tx_mempool.addUnchecked(entry.Fee(0).SpendsCoinbase(true).FromTx(tx));
// This tx can't be mined by itself
tx.vin[0].prevout.hash = hashFreeTx2;
tx.vout.resize(1);
feeToUse = blockMinFeeRate.GetFee(freeTxSize);
tx.vout[0].nValue = 5000000000LL - 100000000 - feeToUse;
Txid hashLowFeeTx2 = tx.GetHash();
tx_mempool.addUnchecked(entry.Fee(feeToUse).SpendsCoinbase(false).FromTx(tx));
pblocktemplate = AssemblerForTest(tx_mempool).CreateNewBlock(scriptPubKey);
// Verify that this tx isn't selected.
for (size_t i=0; i<pblocktemplate->block.vtx.size(); ++i) {
BOOST_CHECK(pblocktemplate->block.vtx[i]->GetHash() != hashFreeTx2);
BOOST_CHECK(pblocktemplate->block.vtx[i]->GetHash() != hashLowFeeTx2);
}
// This tx will be mineable, and should cause hashLowFeeTx2 to be selected
// as well.
tx.vin[0].prevout.n = 1;
tx.vout[0].nValue = 100000000 - 10000; // 10k satoshi fee
tx_mempool.addUnchecked(entry.Fee(10000).FromTx(tx));
pblocktemplate = AssemblerForTest(tx_mempool).CreateNewBlock(scriptPubKey);
BOOST_REQUIRE_EQUAL(pblocktemplate->block.vtx.size(), 9U);
BOOST_CHECK(pblocktemplate->block.vtx[8]->GetHash() == hashLowFeeTx2);
}
void MinerTestingSetup::TestBasicMining(const CScript& scriptPubKey, const std::vector<CTransactionRef>& txFirst, int baseheight)
{
Txid hash;
CMutableTransaction tx;
TestMemPoolEntryHelper entry;
entry.nFee = 11;
entry.nHeight = 11;
const CAmount BLOCKSUBSIDY = 50 * COIN;
const CAmount LOWFEE = CENT;
const CAmount HIGHFEE = COIN;
const CAmount HIGHERFEE = 4 * COIN;
{
CTxMemPool& tx_mempool{MakeMempool()};
LOCK(tx_mempool.cs);
// Just to make sure we can still make simple blocks
auto pblocktemplate = AssemblerForTest(tx_mempool).CreateNewBlock(scriptPubKey);
BOOST_CHECK(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 = BLOCKSUBSIDY;
for (unsigned int i = 0; i < 1001; ++i) {
tx.vout[0].nValue -= LOWFEE;
hash = tx.GetHash();
bool spendsCoinbase = i == 0; // only first tx spends coinbase
// If we don't set the # of sig ops in the CTxMemPoolEntry, template creation fails
tx_mempool.addUnchecked(entry.Fee(LOWFEE).Time(Now<NodeSeconds>()).SpendsCoinbase(spendsCoinbase).FromTx(tx));
tx.vin[0].prevout.hash = hash;
}
BOOST_CHECK_EXCEPTION(AssemblerForTest(tx_mempool).CreateNewBlock(scriptPubKey), std::runtime_error, HasReason("bad-blk-sigops"));
}
{
CTxMemPool& tx_mempool{MakeMempool()};
LOCK(tx_mempool.cs);
tx.vin[0].prevout.hash = txFirst[0]->GetHash();
tx.vout[0].nValue = BLOCKSUBSIDY;
for (unsigned int i = 0; i < 1001; ++i) {
tx.vout[0].nValue -= LOWFEE;
hash = tx.GetHash();
bool spendsCoinbase = i == 0; // only first tx spends coinbase
// If we do set the # of sig ops in the CTxMemPoolEntry, template creation passes
tx_mempool.addUnchecked(entry.Fee(LOWFEE).Time(Now<NodeSeconds>()).SpendsCoinbase(spendsCoinbase).SigOpsCost(80).FromTx(tx));
tx.vin[0].prevout.hash = hash;
}
BOOST_CHECK(AssemblerForTest(tx_mempool).CreateNewBlock(scriptPubKey));
}
{
CTxMemPool& tx_mempool{MakeMempool()};
LOCK(tx_mempool.cs);
// 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 = BLOCKSUBSIDY;
for (unsigned int i = 0; i < 128; ++i) {
tx.vout[0].nValue -= LOWFEE;
hash = tx.GetHash();
bool spendsCoinbase = i == 0; // only first tx spends coinbase
tx_mempool.addUnchecked(entry.Fee(LOWFEE).Time(Now<NodeSeconds>()).SpendsCoinbase(spendsCoinbase).FromTx(tx));
tx.vin[0].prevout.hash = hash;
}
BOOST_CHECK(AssemblerForTest(tx_mempool).CreateNewBlock(scriptPubKey));
}
{
CTxMemPool& tx_mempool{MakeMempool()};
LOCK(tx_mempool.cs);
// orphan in tx_mempool, template creation fails
hash = tx.GetHash();
tx_mempool.addUnchecked(entry.Fee(LOWFEE).Time(Now<NodeSeconds>()).FromTx(tx));
BOOST_CHECK_EXCEPTION(AssemblerForTest(tx_mempool).CreateNewBlock(scriptPubKey), std::runtime_error, HasReason("bad-txns-inputs-missingorspent"));
}
{
CTxMemPool& tx_mempool{MakeMempool()};
LOCK(tx_mempool.cs);
// child with higher feerate than parent
tx.vin[0].scriptSig = CScript() << OP_1;
tx.vin[0].prevout.hash = txFirst[1]->GetHash();
tx.vout[0].nValue = BLOCKSUBSIDY - HIGHFEE;
hash = tx.GetHash();
tx_mempool.addUnchecked(entry.Fee(HIGHFEE).Time(Now<NodeSeconds>()).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 = tx.vout[0].nValue + BLOCKSUBSIDY - HIGHERFEE; // First txn output + fresh coinbase - new txn fee
hash = tx.GetHash();
tx_mempool.addUnchecked(entry.Fee(HIGHERFEE).Time(Now<NodeSeconds>()).SpendsCoinbase(true).FromTx(tx));
BOOST_CHECK(AssemblerForTest(tx_mempool).CreateNewBlock(scriptPubKey));
}
{
CTxMemPool& tx_mempool{MakeMempool()};
LOCK(tx_mempool.cs);
// coinbase in tx_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
tx_mempool.addUnchecked(entry.Fee(LOWFEE).Time(Now<NodeSeconds>()).SpendsCoinbase(false).FromTx(tx));
// Should throw bad-cb-multiple
BOOST_CHECK_EXCEPTION(AssemblerForTest(tx_mempool).CreateNewBlock(scriptPubKey), std::runtime_error, HasReason("bad-cb-multiple"));
}
{
CTxMemPool& tx_mempool{MakeMempool()};
LOCK(tx_mempool.cs);
// double spend txn pair in tx_mempool, template creation fails
tx.vin[0].prevout.hash = txFirst[0]->GetHash();
tx.vin[0].scriptSig = CScript() << OP_1;
tx.vout[0].nValue = BLOCKSUBSIDY - HIGHFEE;
tx.vout[0].scriptPubKey = CScript() << OP_1;
hash = tx.GetHash();
tx_mempool.addUnchecked(entry.Fee(HIGHFEE).Time(Now<NodeSeconds>()).SpendsCoinbase(true).FromTx(tx));
tx.vout[0].scriptPubKey = CScript() << OP_2;
hash = tx.GetHash();
tx_mempool.addUnchecked(entry.Fee(HIGHFEE).Time(Now<NodeSeconds>()).SpendsCoinbase(true).FromTx(tx));
BOOST_CHECK_EXCEPTION(AssemblerForTest(tx_mempool).CreateNewBlock(scriptPubKey), std::runtime_error, HasReason("bad-txns-inputs-missingorspent"));
}
{
CTxMemPool& tx_mempool{MakeMempool()};
LOCK(tx_mempool.cs);
// subsidy changing
int nHeight = m_node.chainman->ActiveChain().Height();
// Create an actual 209999-long block chain (without valid blocks).
while (m_node.chainman->ActiveChain().Tip()->nHeight < 209999) {
CBlockIndex* prev = m_node.chainman->ActiveChain().Tip();
CBlockIndex* next = new CBlockIndex();
next->phashBlock = new uint256(InsecureRand256());
m_node.chainman->ActiveChainstate().CoinsTip().SetBestBlock(next->GetBlockHash());
next->pprev = prev;
next->nHeight = prev->nHeight + 1;
next->BuildSkip();
m_node.chainman->ActiveChain().SetTip(*next);
}
BOOST_CHECK(AssemblerForTest(tx_mempool).CreateNewBlock(scriptPubKey));
// Extend to a 210000-long block chain.
while (m_node.chainman->ActiveChain().Tip()->nHeight < 210000) {
CBlockIndex* prev = m_node.chainman->ActiveChain().Tip();
CBlockIndex* next = new CBlockIndex();
next->phashBlock = new uint256(InsecureRand256());
m_node.chainman->ActiveChainstate().CoinsTip().SetBestBlock(next->GetBlockHash());
next->pprev = prev;
next->nHeight = prev->nHeight + 1;
next->BuildSkip();
m_node.chainman->ActiveChain().SetTip(*next);
}
BOOST_CHECK(AssemblerForTest(tx_mempool).CreateNewBlock(scriptPubKey));
// invalid p2sh txn in tx_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 = BLOCKSUBSIDY - LOWFEE;
CScript script = CScript() << OP_0;
tx.vout[0].scriptPubKey = GetScriptForDestination(ScriptHash(script));
hash = tx.GetHash();
tx_mempool.addUnchecked(entry.Fee(LOWFEE).Time(Now<NodeSeconds>()).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 -= LOWFEE;
hash = tx.GetHash();
tx_mempool.addUnchecked(entry.Fee(LOWFEE).Time(Now<NodeSeconds>()).SpendsCoinbase(false).FromTx(tx));
// Should throw block-validation-failed
BOOST_CHECK_EXCEPTION(AssemblerForTest(tx_mempool).CreateNewBlock(scriptPubKey), std::runtime_error, HasReason("block-validation-failed"));
// Delete the dummy blocks again.
while (m_node.chainman->ActiveChain().Tip()->nHeight > nHeight) {
CBlockIndex* del = m_node.chainman->ActiveChain().Tip();
m_node.chainman->ActiveChain().SetTip(*Assert(del->pprev));
m_node.chainman->ActiveChainstate().CoinsTip().SetBestBlock(del->pprev->GetBlockHash());
delete del->phashBlock;
delete del;
}
}
CTxMemPool& tx_mempool{MakeMempool()};
LOCK(tx_mempool.cs);
// non-final txs in mempool
SetMockTime(m_node.chainman->ActiveChain().Tip()->GetMedianTimePast() + 1);
const int flags{LOCKTIME_VERIFY_SEQUENCE};
// height map
std::vector<int> prevheights;
// relative height locked
tx.version = 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 = m_node.chainman->ActiveChain().Tip()->nHeight + 1; // txFirst[0] is the 2nd block
prevheights[0] = baseheight + 1;
tx.vout.resize(1);
tx.vout[0].nValue = BLOCKSUBSIDY-HIGHFEE;
tx.vout[0].scriptPubKey = CScript() << OP_1;
tx.nLockTime = 0;
hash = tx.GetHash();
tx_mempool.addUnchecked(entry.Fee(HIGHFEE).Time(Now<NodeSeconds>()).SpendsCoinbase(true).FromTx(tx));
BOOST_CHECK(CheckFinalTxAtTip(*Assert(m_node.chainman->ActiveChain().Tip()), CTransaction{tx})); // Locktime passes
BOOST_CHECK(!TestSequenceLocks(CTransaction{tx}, tx_mempool)); // Sequence locks fail
{
CBlockIndex* active_chain_tip = m_node.chainman->ActiveChain().Tip();
BOOST_CHECK(SequenceLocks(CTransaction(tx), flags, prevheights, *CreateBlockIndex(active_chain_tip->nHeight + 2, active_chain_tip))); // 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 | (((m_node.chainman->ActiveChain().Tip()->GetMedianTimePast()+1-m_node.chainman->ActiveChain()[1]->GetMedianTimePast()) >> CTxIn::SEQUENCE_LOCKTIME_GRANULARITY) + 1); // txFirst[1] is the 3rd block
prevheights[0] = baseheight + 2;
hash = tx.GetHash();
tx_mempool.addUnchecked(entry.Time(Now<NodeSeconds>()).FromTx(tx));
BOOST_CHECK(CheckFinalTxAtTip(*Assert(m_node.chainman->ActiveChain().Tip()), CTransaction{tx})); // Locktime passes
BOOST_CHECK(!TestSequenceLocks(CTransaction{tx}, tx_mempool)); // Sequence locks fail
const int SEQUENCE_LOCK_TIME = 512; // Sequence locks pass 512 seconds later
for (int i = 0; i < CBlockIndex::nMedianTimeSpan; ++i)
m_node.chainman->ActiveChain().Tip()->GetAncestor(m_node.chainman->ActiveChain().Tip()->nHeight - i)->nTime += SEQUENCE_LOCK_TIME; // Trick the MedianTimePast
{
CBlockIndex* active_chain_tip = m_node.chainman->ActiveChain().Tip();
BOOST_CHECK(SequenceLocks(CTransaction(tx), flags, prevheights, *CreateBlockIndex(active_chain_tip->nHeight + 1, active_chain_tip)));
}
for (int i = 0; i < CBlockIndex::nMedianTimeSpan; ++i) {
CBlockIndex* ancestor{Assert(m_node.chainman->ActiveChain().Tip()->GetAncestor(m_node.chainman->ActiveChain().Tip()->nHeight - i))};
ancestor->nTime -= SEQUENCE_LOCK_TIME; // undo tricked MTP
}
// absolute height locked
tx.vin[0].prevout.hash = txFirst[2]->GetHash();
tx.vin[0].nSequence = CTxIn::MAX_SEQUENCE_NONFINAL;
prevheights[0] = baseheight + 3;
tx.nLockTime = m_node.chainman->ActiveChain().Tip()->nHeight + 1;
hash = tx.GetHash();
tx_mempool.addUnchecked(entry.Time(Now<NodeSeconds>()).FromTx(tx));
BOOST_CHECK(!CheckFinalTxAtTip(*Assert(m_node.chainman->ActiveChain().Tip()), CTransaction{tx})); // Locktime fails
BOOST_CHECK(TestSequenceLocks(CTransaction{tx}, tx_mempool)); // Sequence locks pass
BOOST_CHECK(IsFinalTx(CTransaction(tx), m_node.chainman->ActiveChain().Tip()->nHeight + 2, m_node.chainman->ActiveChain().Tip()->GetMedianTimePast())); // Locktime passes on 2nd block
// absolute time locked
tx.vin[0].prevout.hash = txFirst[3]->GetHash();
tx.nLockTime = m_node.chainman->ActiveChain().Tip()->GetMedianTimePast();
prevheights.resize(1);
prevheights[0] = baseheight + 4;
hash = tx.GetHash();
tx_mempool.addUnchecked(entry.Time(Now<NodeSeconds>()).FromTx(tx));
BOOST_CHECK(!CheckFinalTxAtTip(*Assert(m_node.chainman->ActiveChain().Tip()), CTransaction{tx})); // Locktime fails
BOOST_CHECK(TestSequenceLocks(CTransaction{tx}, tx_mempool)); // Sequence locks pass
BOOST_CHECK(IsFinalTx(CTransaction(tx), m_node.chainman->ActiveChain().Tip()->nHeight + 2, m_node.chainman->ActiveChain().Tip()->GetMedianTimePast() + 1)); // Locktime passes 1 second later
// mempool-dependent transactions (not added)
tx.vin[0].prevout.hash = hash;
prevheights[0] = m_node.chainman->ActiveChain().Tip()->nHeight + 1;
tx.nLockTime = 0;
tx.vin[0].nSequence = 0;
BOOST_CHECK(CheckFinalTxAtTip(*Assert(m_node.chainman->ActiveChain().Tip()), CTransaction{tx})); // Locktime passes
BOOST_CHECK(TestSequenceLocks(CTransaction{tx}, tx_mempool)); // Sequence locks pass
tx.vin[0].nSequence = 1;
BOOST_CHECK(!TestSequenceLocks(CTransaction{tx}, tx_mempool)); // Sequence locks fail
tx.vin[0].nSequence = CTxIn::SEQUENCE_LOCKTIME_TYPE_FLAG;
BOOST_CHECK(TestSequenceLocks(CTransaction{tx}, tx_mempool)); // Sequence locks pass
tx.vin[0].nSequence = CTxIn::SEQUENCE_LOCKTIME_TYPE_FLAG | 1;
BOOST_CHECK(!TestSequenceLocks(CTransaction{tx}, tx_mempool)); // Sequence locks fail
auto pblocktemplate = AssemblerForTest(tx_mempool).CreateNewBlock(scriptPubKey);
BOOST_CHECK(pblocktemplate);
// 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(), 3U);
// However if we advance height by 1 and time by SEQUENCE_LOCK_TIME, all of them should be mined
for (int i = 0; i < CBlockIndex::nMedianTimeSpan; ++i) {
CBlockIndex* ancestor{Assert(m_node.chainman->ActiveChain().Tip()->GetAncestor(m_node.chainman->ActiveChain().Tip()->nHeight - i))};
ancestor->nTime += SEQUENCE_LOCK_TIME; // Trick the MedianTimePast
}
m_node.chainman->ActiveChain().Tip()->nHeight++;
SetMockTime(m_node.chainman->ActiveChain().Tip()->GetMedianTimePast() + 1);
BOOST_CHECK(pblocktemplate = AssemblerForTest(tx_mempool).CreateNewBlock(scriptPubKey));
BOOST_CHECK_EQUAL(pblocktemplate->block.vtx.size(), 5U);
}
void MinerTestingSetup::TestPrioritisedMining(const CScript& scriptPubKey, const std::vector<CTransactionRef>& txFirst)
{
CTxMemPool& tx_mempool{MakeMempool()};
LOCK(tx_mempool.cs);
TestMemPoolEntryHelper entry;
// Test that a tx below min fee but prioritised is included
CMutableTransaction tx;
tx.vin.resize(1);
tx.vin[0].prevout.hash = txFirst[0]->GetHash();
tx.vin[0].prevout.n = 0;
tx.vin[0].scriptSig = CScript() << OP_1;
tx.vout.resize(1);
tx.vout[0].nValue = 5000000000LL; // 0 fee
uint256 hashFreePrioritisedTx = tx.GetHash();
tx_mempool.addUnchecked(entry.Fee(0).Time(Now<NodeSeconds>()).SpendsCoinbase(true).FromTx(tx));
tx_mempool.PrioritiseTransaction(hashFreePrioritisedTx, 5 * COIN);
tx.vin[0].prevout.hash = txFirst[1]->GetHash();
tx.vin[0].prevout.n = 0;
tx.vout[0].nValue = 5000000000LL - 1000;
// This tx has a low fee: 1000 satoshis
Txid hashParentTx = tx.GetHash(); // save this txid for later use
tx_mempool.addUnchecked(entry.Fee(1000).Time(Now<NodeSeconds>()).SpendsCoinbase(true).FromTx(tx));
// This tx has a medium fee: 10000 satoshis
tx.vin[0].prevout.hash = txFirst[2]->GetHash();
tx.vout[0].nValue = 5000000000LL - 10000;
Txid hashMediumFeeTx = tx.GetHash();
tx_mempool.addUnchecked(entry.Fee(10000).Time(Now<NodeSeconds>()).SpendsCoinbase(true).FromTx(tx));
tx_mempool.PrioritiseTransaction(hashMediumFeeTx, -5 * COIN);
// This tx also has a low fee, but is prioritised
tx.vin[0].prevout.hash = hashParentTx;
tx.vout[0].nValue = 5000000000LL - 1000 - 1000; // 1000 satoshi fee
Txid hashPrioritsedChild = tx.GetHash();
tx_mempool.addUnchecked(entry.Fee(1000).Time(Now<NodeSeconds>()).SpendsCoinbase(false).FromTx(tx));
tx_mempool.PrioritiseTransaction(hashPrioritsedChild, 2 * COIN);
// Test that transaction selection properly updates ancestor fee calculations as prioritised
// parents get included in a block. Create a transaction with two prioritised ancestors, each
// included by itself: FreeParent <- FreeChild <- FreeGrandchild.
// When FreeParent is added, a modified entry will be created for FreeChild + FreeGrandchild
// FreeParent's prioritisation should not be included in that entry.
// When FreeChild is included, FreeChild's prioritisation should also not be included.
tx.vin[0].prevout.hash = txFirst[3]->GetHash();
tx.vout[0].nValue = 5000000000LL; // 0 fee
Txid hashFreeParent = tx.GetHash();
tx_mempool.addUnchecked(entry.Fee(0).SpendsCoinbase(true).FromTx(tx));
tx_mempool.PrioritiseTransaction(hashFreeParent, 10 * COIN);
tx.vin[0].prevout.hash = hashFreeParent;
tx.vout[0].nValue = 5000000000LL; // 0 fee
Txid hashFreeChild = tx.GetHash();
tx_mempool.addUnchecked(entry.Fee(0).SpendsCoinbase(false).FromTx(tx));
tx_mempool.PrioritiseTransaction(hashFreeChild, 1 * COIN);
tx.vin[0].prevout.hash = hashFreeChild;
tx.vout[0].nValue = 5000000000LL; // 0 fee
Txid hashFreeGrandchild = tx.GetHash();
tx_mempool.addUnchecked(entry.Fee(0).SpendsCoinbase(false).FromTx(tx));
auto pblocktemplate = AssemblerForTest(tx_mempool).CreateNewBlock(scriptPubKey);
BOOST_REQUIRE_EQUAL(pblocktemplate->block.vtx.size(), 6U);
BOOST_CHECK(pblocktemplate->block.vtx[1]->GetHash() == hashFreeParent);
BOOST_CHECK(pblocktemplate->block.vtx[2]->GetHash() == hashFreePrioritisedTx);
BOOST_CHECK(pblocktemplate->block.vtx[3]->GetHash() == hashParentTx);
BOOST_CHECK(pblocktemplate->block.vtx[4]->GetHash() == hashPrioritsedChild);
BOOST_CHECK(pblocktemplate->block.vtx[5]->GetHash() == hashFreeChild);
for (size_t i=0; i<pblocktemplate->block.vtx.size(); ++i) {
// The FreeParent and FreeChild's prioritisations should not impact the child.
BOOST_CHECK(pblocktemplate->block.vtx[i]->GetHash() != hashFreeGrandchild);
// De-prioritised transaction should not be included.
BOOST_CHECK(pblocktemplate->block.vtx[i]->GetHash() != hashMediumFeeTx);
}
}
// NOTE: These tests rely on CreateNewBlock doing its own self-validation!
BOOST_AUTO_TEST_CASE(CreateNewBlock_validity)
{
// Note that by default, these tests run with size accounting enabled.
CScript scriptPubKey = CScript() << ParseHex("04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5f") << OP_CHECKSIG;
std::unique_ptr<CBlockTemplate> pblocktemplate;
CTxMemPool& tx_mempool{*m_node.mempool};
// Simple block creation, nothing special yet:
BOOST_CHECK(pblocktemplate = AssemblerForTest(tx_mempool).CreateNewBlock(scriptPubKey));
// We can't make transactions until we have inputs
// Therefore, load 110 blocks :)
static_assert(std::size(BLOCKINFO) == 110, "Should have 110 blocks to import");
int baseheight = 0;
std::vector<CTransactionRef> txFirst;
for (const auto& bi : BLOCKINFO) {
CBlock *pblock = &pblocktemplate->block; // pointer for convenience
{
LOCK(cs_main);
pblock->nVersion = VERSIONBITS_TOP_BITS;
pblock->nTime = m_node.chainman->ActiveChain().Tip()->GetMedianTimePast()+1;
CMutableTransaction txCoinbase(*pblock->vtx[0]);
txCoinbase.version = 1;
txCoinbase.vin[0].scriptSig = CScript{} << (m_node.chainman->ActiveChain().Height() + 1) << bi.extranonce;
txCoinbase.vout.resize(1); // Ignore the (optional) segwit commitment added by CreateNewBlock (as the hardcoded nonces don't account for this)
txCoinbase.vout[0].scriptPubKey = CScript();
pblock->vtx[0] = MakeTransactionRef(std::move(txCoinbase));
if (txFirst.size() == 0)
baseheight = m_node.chainman->ActiveChain().Height();
if (txFirst.size() < 4)
txFirst.push_back(pblock->vtx[0]);
pblock->hashMerkleRoot = BlockMerkleRoot(*pblock);
pblock->nNonce = bi.nonce;
}
std::shared_ptr<const CBlock> shared_pblock = std::make_shared<const CBlock>(*pblock);
BOOST_CHECK(Assert(m_node.chainman)->ProcessNewBlock(shared_pblock, true, true, nullptr));
pblock->hashPrevBlock = pblock->GetHash();
}
LOCK(cs_main);
TestBasicMining(scriptPubKey, txFirst, baseheight);
m_node.chainman->ActiveChain().Tip()->nHeight--;
SetMockTime(0);
TestPackageSelection(scriptPubKey, txFirst);
m_node.chainman->ActiveChain().Tip()->nHeight--;
SetMockTime(0);
TestPrioritisedMining(scriptPubKey, txFirst);
}
BOOST_AUTO_TEST_SUITE_END()