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blockencodings_tests.cpp
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blockencodings_tests.cpp
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// Copyright (c) 2011-2017 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 <blockencodings.h>
#include <consensus/merkle.h>
#include <chainparams.h>
#include <random.h>
#include <test/test_bitcoin.h>
#include <boost/test/unit_test.hpp>
std::vector<std::pair<uint256, CTransactionRef>> extra_txn;
struct RegtestingSetup : public TestingSetup {
RegtestingSetup() : TestingSetup(CBaseChainParams::REGTEST) {}
};
BOOST_FIXTURE_TEST_SUITE(blockencodings_tests, RegtestingSetup)
static CBlock BuildBlockTestCase() {
CBlock block;
CMutableTransaction tx;
tx.vin.resize(1);
tx.vin[0].scriptSig.resize(10);
tx.vout.resize(1);
tx.vout[0].nValue = 42;
block.vtx.resize(3);
block.vtx[0] = MakeTransactionRef(tx);
block.nVersion = 42;
block.hashPrevBlock = InsecureRand256();
block.nBits = 0x207fffff;
tx.vin[0].prevout.hash = InsecureRand256();
tx.vin[0].prevout.n = 0;
block.vtx[1] = MakeTransactionRef(tx);
tx.vin.resize(10);
for (size_t i = 0; i < tx.vin.size(); i++) {
tx.vin[i].prevout.hash = InsecureRand256();
tx.vin[i].prevout.n = 0;
}
block.vtx[2] = MakeTransactionRef(tx);
bool mutated;
block.hashMerkleRoot = BlockMerkleRoot(block, &mutated);
assert(!mutated);
while (!CheckProofOfWork(block.GetHash(), block.nBits, Params().GetConsensus())) ++block.nNonce;
return block;
}
// Number of shared use_counts we expect for a tx we haven't touched
// == 2 (mempool + our copy from the GetSharedTx call)
#define SHARED_TX_OFFSET 2
BOOST_AUTO_TEST_CASE(SimpleRoundTripTest)
{
CTxMemPool pool;
TestMemPoolEntryHelper entry;
CBlock block(BuildBlockTestCase());
pool.addUnchecked(block.vtx[2]->GetHash(), entry.FromTx(*block.vtx[2]));
LOCK(pool.cs);
BOOST_CHECK_EQUAL(pool.mapTx.find(block.vtx[2]->GetHash())->GetSharedTx().use_count(), SHARED_TX_OFFSET + 0);
// Do a simple ShortTxIDs RT
{
CBlockHeaderAndShortTxIDs shortIDs(block, true);
CDataStream stream(SER_NETWORK, PROTOCOL_VERSION);
stream << shortIDs;
CBlockHeaderAndShortTxIDs shortIDs2;
stream >> shortIDs2;
PartiallyDownloadedBlock partialBlock(&pool);
BOOST_CHECK(partialBlock.InitData(shortIDs2, extra_txn) == READ_STATUS_OK);
BOOST_CHECK( partialBlock.IsTxAvailable(0));
BOOST_CHECK(!partialBlock.IsTxAvailable(1));
BOOST_CHECK( partialBlock.IsTxAvailable(2));
BOOST_CHECK_EQUAL(pool.mapTx.find(block.vtx[2]->GetHash())->GetSharedTx().use_count(), SHARED_TX_OFFSET + 1);
size_t poolSize = pool.size();
pool.removeRecursive(*block.vtx[2]);
BOOST_CHECK_EQUAL(pool.size(), poolSize - 1);
CBlock block2;
{
PartiallyDownloadedBlock tmp = partialBlock;
BOOST_CHECK(partialBlock.FillBlock(block2, {}) == READ_STATUS_INVALID); // No transactions
partialBlock = tmp;
}
// Wrong transaction
{
PartiallyDownloadedBlock tmp = partialBlock;
partialBlock.FillBlock(block2, {block.vtx[2]}); // Current implementation doesn't check txn here, but don't require that
partialBlock = tmp;
}
bool mutated;
BOOST_CHECK(block.hashMerkleRoot != BlockMerkleRoot(block2, &mutated));
CBlock block3;
BOOST_CHECK(partialBlock.FillBlock(block3, {block.vtx[1]}) == READ_STATUS_OK);
BOOST_CHECK_EQUAL(block.GetHash().ToString(), block3.GetHash().ToString());
BOOST_CHECK_EQUAL(block.hashMerkleRoot.ToString(), BlockMerkleRoot(block3, &mutated).ToString());
BOOST_CHECK(!mutated);
}
}
class TestHeaderAndShortIDs {
// Utility to encode custom CBlockHeaderAndShortTxIDs
public:
CBlockHeader header;
uint64_t nonce;
std::vector<uint64_t> shorttxids;
std::vector<PrefilledTransaction> prefilledtxn;
explicit TestHeaderAndShortIDs(const CBlockHeaderAndShortTxIDs& orig) {
CDataStream stream(SER_NETWORK, PROTOCOL_VERSION);
stream << orig;
stream >> *this;
}
explicit TestHeaderAndShortIDs(const CBlock& block) :
TestHeaderAndShortIDs(CBlockHeaderAndShortTxIDs(block, true)) {}
uint64_t GetShortID(const uint256& txhash) const {
CDataStream stream(SER_NETWORK, PROTOCOL_VERSION);
stream << *this;
CBlockHeaderAndShortTxIDs base;
stream >> base;
return base.GetShortID(txhash);
}
ADD_SERIALIZE_METHODS;
template <typename Stream, typename Operation>
inline void SerializationOp(Stream& s, Operation ser_action) {
READWRITE(header);
READWRITE(nonce);
size_t shorttxids_size = shorttxids.size();
READWRITE(VARINT(shorttxids_size));
shorttxids.resize(shorttxids_size);
for (size_t i = 0; i < shorttxids.size(); i++) {
uint32_t lsb = shorttxids[i] & 0xffffffff;
uint16_t msb = (shorttxids[i] >> 32) & 0xffff;
READWRITE(lsb);
READWRITE(msb);
shorttxids[i] = (uint64_t(msb) << 32) | uint64_t(lsb);
}
READWRITE(prefilledtxn);
}
};
BOOST_AUTO_TEST_CASE(NonCoinbasePreforwardRTTest)
{
CTxMemPool pool;
TestMemPoolEntryHelper entry;
CBlock block(BuildBlockTestCase());
pool.addUnchecked(block.vtx[2]->GetHash(), entry.FromTx(*block.vtx[2]));
LOCK(pool.cs);
BOOST_CHECK_EQUAL(pool.mapTx.find(block.vtx[2]->GetHash())->GetSharedTx().use_count(), SHARED_TX_OFFSET + 0);
uint256 txhash;
// Test with pre-forwarding tx 1, but not coinbase
{
TestHeaderAndShortIDs shortIDs(block);
shortIDs.prefilledtxn.resize(1);
shortIDs.prefilledtxn[0] = {1, block.vtx[1]};
shortIDs.shorttxids.resize(2);
shortIDs.shorttxids[0] = shortIDs.GetShortID(block.vtx[0]->GetHash());
shortIDs.shorttxids[1] = shortIDs.GetShortID(block.vtx[2]->GetHash());
CDataStream stream(SER_NETWORK, PROTOCOL_VERSION);
stream << shortIDs;
CBlockHeaderAndShortTxIDs shortIDs2;
stream >> shortIDs2;
PartiallyDownloadedBlock partialBlock(&pool);
BOOST_CHECK(partialBlock.InitData(shortIDs2, extra_txn) == READ_STATUS_OK);
BOOST_CHECK(!partialBlock.IsTxAvailable(0));
BOOST_CHECK( partialBlock.IsTxAvailable(1));
BOOST_CHECK( partialBlock.IsTxAvailable(2));
BOOST_CHECK_EQUAL(pool.mapTx.find(block.vtx[2]->GetHash())->GetSharedTx().use_count(), SHARED_TX_OFFSET + 1);
CBlock block2;
{
PartiallyDownloadedBlock tmp = partialBlock;
BOOST_CHECK(partialBlock.FillBlock(block2, {}) == READ_STATUS_INVALID); // No transactions
partialBlock = tmp;
}
// Wrong transaction
{
PartiallyDownloadedBlock tmp = partialBlock;
partialBlock.FillBlock(block2, {block.vtx[1]}); // Current implementation doesn't check txn here, but don't require that
partialBlock = tmp;
}
bool mutated;
BOOST_CHECK(block.hashMerkleRoot != BlockMerkleRoot(block2, &mutated));
CBlock block3;
PartiallyDownloadedBlock partialBlockCopy = partialBlock;
BOOST_CHECK(partialBlock.FillBlock(block3, {block.vtx[0]}) == READ_STATUS_OK);
BOOST_CHECK_EQUAL(block.GetHash().ToString(), block3.GetHash().ToString());
BOOST_CHECK_EQUAL(block.hashMerkleRoot.ToString(), BlockMerkleRoot(block3, &mutated).ToString());
BOOST_CHECK(!mutated);
txhash = block.vtx[2]->GetHash();
block.vtx.clear();
block2.vtx.clear();
block3.vtx.clear();
BOOST_CHECK_EQUAL(pool.mapTx.find(txhash)->GetSharedTx().use_count(), SHARED_TX_OFFSET + 1); // + 1 because of partialBlockCopy.
}
BOOST_CHECK_EQUAL(pool.mapTx.find(txhash)->GetSharedTx().use_count(), SHARED_TX_OFFSET + 0);
}
BOOST_AUTO_TEST_CASE(SufficientPreforwardRTTest)
{
CTxMemPool pool;
TestMemPoolEntryHelper entry;
CBlock block(BuildBlockTestCase());
pool.addUnchecked(block.vtx[1]->GetHash(), entry.FromTx(*block.vtx[1]));
LOCK(pool.cs);
BOOST_CHECK_EQUAL(pool.mapTx.find(block.vtx[1]->GetHash())->GetSharedTx().use_count(), SHARED_TX_OFFSET + 0);
uint256 txhash;
// Test with pre-forwarding coinbase + tx 2 with tx 1 in mempool
{
TestHeaderAndShortIDs shortIDs(block);
shortIDs.prefilledtxn.resize(2);
shortIDs.prefilledtxn[0] = {0, block.vtx[0]};
shortIDs.prefilledtxn[1] = {1, block.vtx[2]}; // id == 1 as it is 1 after index 1
shortIDs.shorttxids.resize(1);
shortIDs.shorttxids[0] = shortIDs.GetShortID(block.vtx[1]->GetHash());
CDataStream stream(SER_NETWORK, PROTOCOL_VERSION);
stream << shortIDs;
CBlockHeaderAndShortTxIDs shortIDs2;
stream >> shortIDs2;
PartiallyDownloadedBlock partialBlock(&pool);
BOOST_CHECK(partialBlock.InitData(shortIDs2, extra_txn) == READ_STATUS_OK);
BOOST_CHECK( partialBlock.IsTxAvailable(0));
BOOST_CHECK( partialBlock.IsTxAvailable(1));
BOOST_CHECK( partialBlock.IsTxAvailable(2));
BOOST_CHECK_EQUAL(pool.mapTx.find(block.vtx[1]->GetHash())->GetSharedTx().use_count(), SHARED_TX_OFFSET + 1);
CBlock block2;
PartiallyDownloadedBlock partialBlockCopy = partialBlock;
BOOST_CHECK(partialBlock.FillBlock(block2, {}) == READ_STATUS_OK);
BOOST_CHECK_EQUAL(block.GetHash().ToString(), block2.GetHash().ToString());
bool mutated;
BOOST_CHECK_EQUAL(block.hashMerkleRoot.ToString(), BlockMerkleRoot(block2, &mutated).ToString());
BOOST_CHECK(!mutated);
txhash = block.vtx[1]->GetHash();
block.vtx.clear();
block2.vtx.clear();
BOOST_CHECK_EQUAL(pool.mapTx.find(txhash)->GetSharedTx().use_count(), SHARED_TX_OFFSET + 1); // + 1 because of partialBlockCopy.
}
BOOST_CHECK_EQUAL(pool.mapTx.find(txhash)->GetSharedTx().use_count(), SHARED_TX_OFFSET + 0);
}
BOOST_AUTO_TEST_CASE(EmptyBlockRoundTripTest)
{
CTxMemPool pool;
CMutableTransaction coinbase;
coinbase.vin.resize(1);
coinbase.vin[0].scriptSig.resize(10);
coinbase.vout.resize(1);
coinbase.vout[0].nValue = 42;
CBlock block;
block.vtx.resize(1);
block.vtx[0] = MakeTransactionRef(std::move(coinbase));
block.nVersion = 42;
block.hashPrevBlock = InsecureRand256();
block.nBits = 0x207fffff;
bool mutated;
block.hashMerkleRoot = BlockMerkleRoot(block, &mutated);
assert(!mutated);
while (!CheckProofOfWork(block.GetHash(), block.nBits, Params().GetConsensus())) ++block.nNonce;
// Test simple header round-trip with only coinbase
{
CBlockHeaderAndShortTxIDs shortIDs(block, false);
CDataStream stream(SER_NETWORK, PROTOCOL_VERSION);
stream << shortIDs;
CBlockHeaderAndShortTxIDs shortIDs2;
stream >> shortIDs2;
PartiallyDownloadedBlock partialBlock(&pool);
BOOST_CHECK(partialBlock.InitData(shortIDs2, extra_txn) == READ_STATUS_OK);
BOOST_CHECK(partialBlock.IsTxAvailable(0));
CBlock block2;
std::vector<CTransactionRef> vtx_missing;
BOOST_CHECK(partialBlock.FillBlock(block2, vtx_missing) == READ_STATUS_OK);
BOOST_CHECK_EQUAL(block.GetHash().ToString(), block2.GetHash().ToString());
BOOST_CHECK_EQUAL(block.hashMerkleRoot.ToString(), BlockMerkleRoot(block2, &mutated).ToString());
BOOST_CHECK(!mutated);
}
}
BOOST_AUTO_TEST_CASE(TransactionsRequestSerializationTest) {
BlockTransactionsRequest req1;
req1.blockhash = InsecureRand256();
req1.indexes.resize(4);
req1.indexes[0] = 0;
req1.indexes[1] = 1;
req1.indexes[2] = 3;
req1.indexes[3] = 4;
CDataStream stream(SER_NETWORK, PROTOCOL_VERSION);
stream << req1;
BlockTransactionsRequest req2;
stream >> req2;
BOOST_CHECK_EQUAL(req1.blockhash.ToString(), req2.blockhash.ToString());
BOOST_CHECK_EQUAL(req1.indexes.size(), req2.indexes.size());
BOOST_CHECK_EQUAL(req1.indexes[0], req2.indexes[0]);
BOOST_CHECK_EQUAL(req1.indexes[1], req2.indexes[1]);
BOOST_CHECK_EQUAL(req1.indexes[2], req2.indexes[2]);
BOOST_CHECK_EQUAL(req1.indexes[3], req2.indexes[3]);
}
BOOST_AUTO_TEST_SUITE_END()