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Suggested corrections on comments, variable names. 

Also new test case testing the PoW skip in UNITTEST.
0.10
SergioDemianLerner 10 years ago committed by Wladimir J. van der Laan
parent
a25fd6be13
commit
5e2e7fcb99
3 changed files with 91 additions and 48 deletions
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  1. 8
      src/chainparams.cpp
  2. 4
      src/main.cpp
  3. 127
      src/test/blockv2_tests.cpp

8
src/chainparams.cpp
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@ -215,7 +215,7 @@ public: @@ -215,7 +215,7 @@ public:
static CRegTestParams regTestParams;
//
// Regression test
// Unit test
//
class CUnitTestParams : public CMainParams, public CModifiableParams {
public:
@ -242,9 +242,9 @@ public: @@ -242,9 +242,9 @@ public:
virtual void setEnforceBlockUpgradeMajority(int anEnforceBlockUpgradeMajority) { nEnforceBlockUpgradeMajority=anEnforceBlockUpgradeMajority; }
virtual void setRejectBlockOutdatedMajority(int anRejectBlockOutdatedMajority) { nRejectBlockOutdatedMajority=anRejectBlockOutdatedMajority; }
virtual void setToCheckBlockUpgradeMajority(int anToCheckBlockUpgradeMajority) { nToCheckBlockUpgradeMajority=anToCheckBlockUpgradeMajority; }
virtual void setDefaultCheckMemPool(bool aDefaultCheckMemPool) { fDefaultCheckMemPool=aDefaultCheckMemPool; }
virtual void setAllowMinDifficultyBlocks(bool aAllowMinDifficultyBlocks) { fAllowMinDifficultyBlocks=aAllowMinDifficultyBlocks; }
virtual void setSkipProofOfWorkCheck(bool aSkipProofOfWorkCheck) { fSkipProofOfWorkCheck = aSkipProofOfWorkCheck; }
virtual void setDefaultCheckMemPool(bool afDefaultCheckMemPool) { fDefaultCheckMemPool=afDefaultCheckMemPool; }
virtual void setAllowMinDifficultyBlocks(bool afAllowMinDifficultyBlocks) { fAllowMinDifficultyBlocks=afAllowMinDifficultyBlocks; }
virtual void setSkipProofOfWorkCheck(bool afSkipProofOfWorkCheck) { fSkipProofOfWorkCheck = afSkipProofOfWorkCheck; }
};
static CUnitTestParams unitTestParams;

4
src/main.cpp
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@ -2304,8 +2304,8 @@ bool AcceptBlockHeader(CBlockHeader& block, CValidationState& state, CBlockIndex @@ -2304,8 +2304,8 @@ bool AcceptBlockHeader(CBlockHeader& block, CValidationState& state, CBlockIndex
nHeight = pindexPrev->nHeight+1;
// Check proof of work
if (!Params().SkipProofOfWorkCheck())
if (block.nBits != GetNextWorkRequired(pindexPrev, &block))
if ((!Params().SkipProofOfWorkCheck()) &&
(block.nBits != GetNextWorkRequired(pindexPrev, &block)))
return state.DoS(100, error("AcceptBlock() : incorrect proof of work"),
REJECT_INVALID, "bad-diffbits");

127
src/test/blockv2_tests.cpp
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@ -9,33 +9,34 @@ @@ -9,33 +9,34 @@
#include <boost/test/unit_test.hpp>
// Tests the majority rule which states that after 1000 v2 blocks no v1 block can go
// This test cheecks the majority rule which states that after 1000 v2 blocks no new v1 block can be part of that branch.
BOOST_AUTO_TEST_SUITE(blockv2_tests)
static CScript scriptPubKey = CScript() << ParseHex("04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5f") << OP_CHECKSIG;
static void SetEmptyBlock(CBlock * pblock)
{
pblock->nVersion = 2;
pblock->nTime = chainActive.Tip()->GetMedianTimePast()+1;
pblock->nNonce = 0;
pblock->nVersion = 2;
pblock->nTime = chainActive.Tip()->GetMedianTimePast()+1;
pblock->nNonce = 0;
}
static void SetBlockDefaultAttributesAndHeight(CBlock * pblock,bool addHeight,int difValue)
static void SetBlockDefaultAttributesAndHeight(CBlock * pblock,bool addHeight,int heightDifference)
{
SetEmptyBlock(pblock);
SetEmptyBlock(pblock);
// Add the coinbase
CMutableTransaction txCoinbase(pblock->vtx[0]);
// Add the coinbase
CMutableTransaction txCoinbase(pblock->vtx[0]);
if (addHeight)
txCoinbase.vin[0].scriptSig = (CScript() << (chainActive.Height()+1+difValue) << 0);
else
txCoinbase.vin[0].scriptSig = (CScript() << difValue << 0); // At least size 2, this is a protocol spec
if (addHeight)
txCoinbase.vin[0].scriptSig = (CScript() << (chainActive.Height()+1+heightDifference) << 0);
else
txCoinbase.vin[0].scriptSig = (CScript() << heightDifference << 0); // At least size 2, this is a protocol spec
txCoinbase.vout[0].scriptPubKey = CScript();
pblock->vtx[0] = CTransaction(txCoinbase);
pblock->hashMerkleRoot = pblock->BuildMerkleTree();
txCoinbase.vout[0].scriptPubKey = CScript();
pblock->vtx[0] = CTransaction(txCoinbase);
pblock->hashMerkleRoot = pblock->BuildMerkleTree();
}
void CheckSubsidyHalving(CBlockTemplate * &pblocktemplate, CBlock * &pblock)
@ -44,6 +45,8 @@ void CheckSubsidyHalving(CBlockTemplate * &pblocktemplate, CBlock * &pblock) @@ -44,6 +45,8 @@ void CheckSubsidyHalving(CBlockTemplate * &pblocktemplate, CBlock * &pblock)
{
// The RegTest network has a low subsidy halving interval (150) so
// we must recompute the coinbase subsidy if we reach the boundary.
// The unittest network allows modifying this interval. We check it so this
// test can work in any network.
// preserve parent hash
uint256 prevParent = pblock->hashPrevBlock;
@ -54,6 +57,22 @@ void CheckSubsidyHalving(CBlockTemplate * &pblocktemplate, CBlock * &pblock) @@ -54,6 +57,22 @@ void CheckSubsidyHalving(CBlockTemplate * &pblocktemplate, CBlock * &pblock)
}
}
void CheckBlockAddedToBestChainSuccessfully(CBlock *pblock)
{
int PreviousHeight;
CValidationState state;
PreviousHeight = chainActive.Height();
BOOST_CHECK(ProcessBlock(state, NULL, pblock));
BOOST_CHECK(state.IsValid());
BOOST_CHECK((PreviousHeight+1) == chainActive.Height()); // to differentiate from orphan blocks, which also get accepted in ProcessBlock()
// Previous checks do not assure the current best chain has pblock as tip. It could be the case that a because
// of a malfunction in the chain reorganization code, a reorganization causes an increase of the chain length, but with another tip.
// So we also check that.
BOOST_CHECK(chainActive.Tip()->GetBlockHash()==pblock->GetHash());
}
void Blockv2test()
{
assert(Params().NetworkID() == CBaseChainParams::UNITTEST);
@ -73,16 +92,17 @@ void Blockv2test() @@ -73,16 +92,17 @@ void Blockv2test()
uint256 hash;
int PreviousHeight;
LOCK(cs_main);
// Simple block creation, nothing special yet.
pblocktemplate = CreateNewBlock(scriptPubKey);
CBlock *pblock = &pblocktemplate->block; // pointer for convenience
LogPrintf("Blockv2test block v1 add begin\n");
// First create a block v1, check that it is accepted. The block has an invalid height
////////////////////////////////////////////////////////////////////////////////////////
// First create a block v1, check that it is accepted. The block has an invalid height.
////////////////////////////////////////////////////////////////////////////////////////
SetBlockDefaultAttributesAndHeight(pblock,false,5000);
pblock->nVersion = 1;
CValidationState state1;
@ -93,7 +113,6 @@ void Blockv2test() @@ -93,7 +113,6 @@ void Blockv2test()
pblock->hashPrevBlock = pblock->GetHash(); // update parent
// Now create exactly 1000 blocks v2
// First check that the supermajority threshold is exactly 1000 blocks
BOOST_CHECK(Params().ToCheckBlockUpgradeMajority()==1000); //
@ -105,11 +124,19 @@ void Blockv2test() @@ -105,11 +124,19 @@ void Blockv2test()
LogPrintf("Blockv2test BIP30 repetition begin\n");
///////////////////////////////////////////////////////////////////////////////////////////////////////
// First, if we try to add a block v2 with the same coinbase tx, we should get
// "bad-txns-BIP30" because the coinbase tx has the same hash as the previous.
// Unluckily, even if ConnectBlock returns a "bad-txns-BIP30", ActivateBestChainStep clears
// the state, so we get true here and the "bad-txns-BIP30" reason is lost.
// We verify instead that the chain height has not been incremented.
// Even if ConnectBlock returns a "bad-txns-BIP30", ActivateBestChainStep clears
// the state, so we get true here and the "bad-txns-BIP30" reason is lost. But this
// is the intended behaviour: Receiving a single block can cause zero or multiple blocks to be
// connected, and ActivateBestChain's responsibility is just switching the best block whatsoever.
// Feedback about failures causes a reject message to be sent to the peer from which we received
// the actual block (not necessarily the same as from whom we got the block that caused the reorg),
// for which we remember the peerid.
// Because we cannot access the failure reason here, we just verify instead that the chain
// height has not been incremented.
//////////////////////////////////////////////////////////////////////////////////////////////////////
CValidationState state7;
PreviousHeight = chainActive.Height();
@ -121,6 +148,11 @@ void Blockv2test() @@ -121,6 +148,11 @@ void Blockv2test()
BOOST_CHECK(PreviousHeight == chainActive.Height()); // we check the block has not been added.
LogPrintf("Blockv2test 750 v2 blocks begin\n");
////////////////////////////
// Now create 750 v2 blocks
////////////////////////////
for (int i=0;i<750;i++)
{
@ -131,18 +163,17 @@ void Blockv2test() @@ -131,18 +163,17 @@ void Blockv2test()
// We add a value to the height to make is NOT equal to the actual height.
SetBlockDefaultAttributesAndHeight(pblock,true,1000); // blocks version 2 without height are allowed! for only 750 blocks
pblock->nVersion = 2;
CValidationState state;
PreviousHeight = chainActive.Height();
BOOST_CHECK(ProcessBlock(state, NULL, pblock));
BOOST_CHECK(state.IsValid());
BOOST_CHECK((PreviousHeight+1) == chainActive.Height()); // to differentiate from orphan blocks, which also get accepted in ProcessBlock()
CheckBlockAddedToBestChainSuccessfully(pblock);
pblock->hashPrevBlock = pblock->GetHash(); // update parent
}
LogPrintf("Blockv2test v2 without height rejected begin\n");
// Now we try to add a block v2, with an invalid height and it should be rejected. We use 2000 because is not in the range [1000..1750].
/////////////////////////////////////////////////////////////////////////////////////
// Now we try to add a block v2, with an invalid height and it should be rejected.
// We use 2000 as argument heightDifference because is not in the range [1000..1750].
/////////////////////////////////////////////////////////////////////////////////////
CheckSubsidyHalving(pblocktemplate,pblock);
SetBlockDefaultAttributesAndHeight(pblock,true,2000); //
pblock->nVersion = 2;
@ -154,8 +185,10 @@ void Blockv2test() @@ -154,8 +185,10 @@ void Blockv2test()
LogPrintf("Blockv2test v2 with height accepted begin\n");
// Now we add a block with height, must be ok.
/////////////////////////////////////////////////////////////
// Now we add 200 additional blocks, until we get 950
// (the threshold where v1 blocks are not accepted anymore)
/////////////////////////////////////////////////////////////
for (int i=0;i<200;i++)
{
@ -163,19 +196,16 @@ void Blockv2test() @@ -163,19 +196,16 @@ void Blockv2test()
CheckSubsidyHalving(pblocktemplate,pblock);
SetBlockDefaultAttributesAndHeight(pblock,true,0);
pblock->nVersion = 2;
CValidationState state;
PreviousHeight = chainActive.Height();
BOOST_CHECK(ProcessBlock(state, NULL, pblock));
BOOST_CHECK(state.IsValid());
BOOST_CHECK((PreviousHeight+1) == chainActive.Height()); // to differentiate from orphan blocks, which also get accepted in ProcessBlock()
CheckBlockAddedToBestChainSuccessfully(pblock);
pblock->hashPrevBlock = pblock->GetHash(); // update parent
}
LogPrintf("Blockv2test block v1 rejected\n");
// Now we add 200 additional blocks, until we get 950 (the threshold were v1 blocks are not accepted anymore)
/////////////////////////////////////////////////////////////////////////////////////////
// Now we try to add a block v1, it should be rejected, even if it hash the height field
/////////////////////////////////////////////////////////////////////////////////////////
CheckSubsidyHalving(pblocktemplate,pblock);
SetBlockDefaultAttributesAndHeight(pblock,true,0);
pblock->nVersion = 1;
@ -185,11 +215,9 @@ void Blockv2test() @@ -185,11 +215,9 @@ void Blockv2test()
BOOST_CHECK(state2.GetRejectReason()=="bad-version");
// Do not update parent since block has failed
// Some other missing tests, added here as bonus...
////////////////////////////////////////////////////////
// Block time too old check
////////////////////////////////////////////////////////
CheckSubsidyHalving(pblocktemplate,pblock);
SetBlockDefaultAttributesAndHeight(pblock,true,0);
pblock->nVersion = 2;
@ -200,7 +228,9 @@ void Blockv2test() @@ -200,7 +228,9 @@ void Blockv2test()
BOOST_CHECK(state4.GetRejectReason()=="time-too-old");
// Do not update parent since block has failed
////////////////////////////////////////////////////////
// Adding a non-final coinbase, must modify coinbase
////////////////////////////////////////////////////////
CheckSubsidyHalving(pblocktemplate,pblock);
SetEmptyBlock(pblock);
// Use a mutable coinbase to change nLockTime and nSequence
@ -217,10 +247,23 @@ void Blockv2test() @@ -217,10 +247,23 @@ void Blockv2test()
BOOST_CHECK(state5.GetRejectReason()=="bad-txns-nonfinal");
// Do not update parent since block has failed
ModifiableParams()->setSkipProofOfWorkCheck(false);
////////////////////////////////////////////////////////////////////////////////
// Just to be sure that proof-of-work skipping is working ok, we submit a block
// without enought proof of work and it must be rejected.
////////////////////////////////////////////////////////////////////////////////
CheckSubsidyHalving(pblocktemplate,pblock);
SetBlockDefaultAttributesAndHeight(pblock,true,0);
pblock->nVersion = 2;
CValidationState state6;
BOOST_CHECK(ProcessBlock(state6, NULL, pblock)==false);
BOOST_CHECK(!state6.IsValid());
BOOST_CHECK(state6.GetRejectReason()=="high-hash");
delete pblocktemplate;
ModifiableParams()->setSkipProofOfWorkCheck(false);
LogPrintf("Blockv2test testcase ends\n");
}

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