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Unit test doublespends in new blocks

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As suggested by Greg Maxwell-- unit test to make sure a block
with a double-spend in it doesn't pass validation if half of
the double-spend is already in the memory pool (so full-blown
transaction validation is skipped) when the block is received.
This commit is contained in:
Gavin Andresen
2015-03-03 09:59:32 -05:00
committed by Pieter Wuille
parent 17b11428c1
commit 517e6dd256
5 changed files with 180 additions and 6 deletions
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57
src/test/test_bitcoin.cpp
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@@ -7,8 +7,12 @@
#include "test_bitcoin.h"
#include "chainparams.h"
#include "consensus/consensus.h"
#include "consensus/validation.h"
#include "key.h"
#include "main.h"
#include "miner.h"
#include "pubkey.h"
#include "random.h"
#include "txdb.h"
#include "ui_interface.h"
@@ -28,20 +32,22 @@ CWallet* pwalletMain;
extern bool fPrintToConsole;
extern void noui_connect();
BasicTestingSetup::BasicTestingSetup()
BasicTestingSetup::BasicTestingSetup(CBaseChainParams::Network network)
{
ECC_Start();
SetupEnvironment();
fPrintToDebugLog = false; // don't want to write to debug.log file
fCheckBlockIndex = true;
SelectParams(CBaseChainParams::MAIN);
SelectParams(network);
noui_connect();
}
BasicTestingSetup::~BasicTestingSetup()
{
ECC_Stop();
}
TestingSetup::TestingSetup()
TestingSetup::TestingSetup(CBaseChainParams::Network network) : BasicTestingSetup(network)
{
#ifdef ENABLE_WALLET
bitdb.MakeMock();
@@ -87,6 +93,51 @@ TestingSetup::~TestingSetup()
boost::filesystem::remove_all(pathTemp);
}
TestChain100Setup::TestChain100Setup() : TestingSetup(CBaseChainParams::REGTEST)
{
// Generate a 100-block chain:
coinbaseKey.MakeNewKey(true);
CScript scriptPubKey = CScript() << ToByteVector(coinbaseKey.GetPubKey()) << OP_CHECKSIG;
for (int i = 0; i < COINBASE_MATURITY; i++)
{
std::vector<CMutableTransaction> noTxns;
CBlock b = CreateAndProcessBlock(noTxns, scriptPubKey);
coinbaseTxns.push_back(b.vtx[0]);
}
}
//
// Create a new block with just given transactions, coinbase paying to
// scriptPubKey, and try to add it to the current chain.
//
CBlock
TestChain100Setup::CreateAndProcessBlock(const std::vector<CMutableTransaction>& txns, const CScript& scriptPubKey)
{
CBlockTemplate *pblocktemplate = CreateNewBlock(scriptPubKey);
CBlock& block = pblocktemplate->block;
// Replace mempool-selected txns with just coinbase plus passed-in txns:
block.vtx.resize(1);
BOOST_FOREACH(const CMutableTransaction& tx, txns)
block.vtx.push_back(tx);
// IncrementExtraNonce creates a valid coinbase and merkleRoot
unsigned int extraNonce = 0;
IncrementExtraNonce(&block, chainActive.Tip(), extraNonce);
while (!CheckProofOfWork(block.GetHash(), block.nBits, Params(CBaseChainParams::REGTEST).GetConsensus())) ++block.nNonce;
CValidationState state;
ProcessNewBlock(state, NULL, &block, true, NULL);
CBlock result = block;
delete pblocktemplate;
return result;
}
TestChain100Setup::~TestChain100Setup()
{
}
void Shutdown(void* parg)
{
exit(0);