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Add some blockencodings tests

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TheBlueMatt committed Apr 25, 2016
1 parent f4f8f14 commit e3b2222144a0def7fa61822bdd11fb7e6bdc70ec
Showing with 316 additions and 0 deletions.
  1. +1 −0 src/Makefile.test.include
  2. +315 −0 src/test/blockencodings_tests.cpp
@@ -45,6 +45,7 @@ BITCOIN_TESTS =\
test/base58_tests.cpp \
test/base64_tests.cpp \
test/bip32_tests.cpp \
test/blockencodings_tests.cpp \
test/bloom_tests.cpp \
test/Checkpoints_tests.cpp \
test/coins_tests.cpp \
@@ -0,0 +1,315 @@
// 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 "blockencodings.h"
#include "consensus/merkle.h"
#include "chainparams.h"
#include "random.h"

#include "test/test_bitcoin.h"

#include <boost/test/unit_test.hpp>

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] = tx;
block.nVersion = 42;
block.hashPrevBlock = GetRandHash();
block.nBits = 0x207fffff;

tx.vin[0].prevout.hash = GetRandHash();
tx.vin[0].prevout.n = 0;
block.vtx[1] = tx;

tx.vin.resize(10);
for (size_t i = 0; i < tx.vin.size(); i++) {
tx.vin[i].prevout.hash = GetRandHash();
tx.vin[i].prevout.n = 0;
}
block.vtx[2] = 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 havent touched
// == 2 (mempool + our copy from the GetSharedTx call)
#define SHARED_TX_OFFSET 2

BOOST_AUTO_TEST_CASE(SimpleRoundTripTest)
{
CTxMemPool pool(CFeeRate(0));
TestMemPoolEntryHelper entry;
CBlock block(BuildBlockTestCase());

pool.addUnchecked(block.vtx[2].GetHash(), entry.FromTx(block.vtx[2]));
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);

CDataStream stream(SER_NETWORK, PROTOCOL_VERSION);
stream << shortIDs;

CBlockHeaderAndShortTxIDs shortIDs2;
stream >> shortIDs2;

PartiallyDownloadedBlock partialBlock(&pool);
BOOST_CHECK(partialBlock.InitData(shortIDs2) == 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);

std::list<CTransaction> removed;
pool.removeRecursive(block.vtx[2], removed);
BOOST_CHECK_EQUAL(removed.size(), 1);

CBlock block2;
std::vector<CTransaction> vtx_missing;
BOOST_CHECK(partialBlock.FillBlock(block2, vtx_missing) == READ_STATUS_INVALID); // No transactions

vtx_missing.push_back(block.vtx[2]); // Wrong transaction
partialBlock.FillBlock(block2, vtx_missing); // Current implementation doesn't check txn here, but don't require that
bool mutated;
BOOST_CHECK(block.hashMerkleRoot != BlockMerkleRoot(block2, &mutated));

vtx_missing[0] = block.vtx[1];
CBlock block3;
BOOST_CHECK(partialBlock.FillBlock(block3, vtx_missing) == 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;

TestHeaderAndShortIDs(const CBlockHeaderAndShortTxIDs& orig) {
CDataStream stream(SER_NETWORK, PROTOCOL_VERSION);
stream << orig;
stream >> *this;
}
TestHeaderAndShortIDs(const CBlock& block) :
TestHeaderAndShortIDs(CBlockHeaderAndShortTxIDs(block)) {}

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, int nType, int nVersion) {
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(CFeeRate(0));
TestMemPoolEntryHelper entry;
CBlock block(BuildBlockTestCase());

pool.addUnchecked(block.vtx[2].GetHash(), entry.FromTx(block.vtx[2]));
BOOST_CHECK_EQUAL(pool.mapTx.find(block.vtx[2].GetHash())->GetSharedTx().use_count(), SHARED_TX_OFFSET + 0);

// 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) == 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;
std::vector<CTransaction> vtx_missing;
BOOST_CHECK(partialBlock.FillBlock(block2, vtx_missing) == READ_STATUS_INVALID); // No transactions

vtx_missing.push_back(block.vtx[1]); // Wrong transaction
partialBlock.FillBlock(block2, vtx_missing); // Current implementation doesn't check txn here, but don't require that
bool mutated;
BOOST_CHECK(block.hashMerkleRoot != BlockMerkleRoot(block2, &mutated));

vtx_missing[0] = block.vtx[0];
CBlock block3;
BOOST_CHECK(partialBlock.FillBlock(block3, vtx_missing) == 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);

BOOST_CHECK_EQUAL(pool.mapTx.find(block.vtx[2].GetHash())->GetSharedTx().use_count(), SHARED_TX_OFFSET + 1);
}
BOOST_CHECK_EQUAL(pool.mapTx.find(block.vtx[2].GetHash())->GetSharedTx().use_count(), SHARED_TX_OFFSET + 0);
}

BOOST_AUTO_TEST_CASE(SufficientPreforwardRTTest)
{
CTxMemPool pool(CFeeRate(0));
TestMemPoolEntryHelper entry;
CBlock block(BuildBlockTestCase());

pool.addUnchecked(block.vtx[1].GetHash(), entry.FromTx(block.vtx[1]));
BOOST_CHECK_EQUAL(pool.mapTx.find(block.vtx[1].GetHash())->GetSharedTx().use_count(), SHARED_TX_OFFSET + 0);

// 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) == 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;
std::vector<CTransaction> vtx_missing;
BOOST_CHECK(partialBlock.FillBlock(block2, vtx_missing) == 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);

BOOST_CHECK_EQUAL(pool.mapTx.find(block.vtx[1].GetHash())->GetSharedTx().use_count(), SHARED_TX_OFFSET + 1);
}
BOOST_CHECK_EQUAL(pool.mapTx.find(block.vtx[1].GetHash())->GetSharedTx().use_count(), SHARED_TX_OFFSET + 0);
}

BOOST_AUTO_TEST_CASE(EmptyBlockRoundTripTest)
{
CTxMemPool pool(CFeeRate(0));
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] = coinbase;
block.nVersion = 42;
block.hashPrevBlock = GetRandHash();
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);

CDataStream stream(SER_NETWORK, PROTOCOL_VERSION);
stream << shortIDs;

CBlockHeaderAndShortTxIDs shortIDs2;
stream >> shortIDs2;

PartiallyDownloadedBlock partialBlock(&pool);
BOOST_CHECK(partialBlock.InitData(shortIDs2) == READ_STATUS_OK);
BOOST_CHECK(partialBlock.IsTxAvailable(0));

CBlock block2;
std::vector<CTransaction> vtx_missing;
BOOST_CHECK(partialBlock.FillBlock(block2, vtx_missing) == 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);
}
}

BOOST_AUTO_TEST_CASE(TransactionsRequestSerializationTest) {
BlockTransactionsRequest req1;
req1.blockhash = GetRandHash();
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()

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