diff options
Diffstat (limited to 'src/test')
| -rw-r--r-- | src/test/versionbits_tests.cpp | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/src/test/versionbits_tests.cpp b/src/test/versionbits_tests.cpp index 9de8461d84..63dc4726bc 100644 --- a/src/test/versionbits_tests.cpp +++ b/src/test/versionbits_tests.cpp @@ -6,6 +6,9 @@ #include "random.h" #include "versionbits.h" #include "test/test_bitcoin.h" +#include "chainparams.h" +#include "main.h" +#include "consensus/params.h" #include <boost/test/unit_test.hpp> @@ -124,6 +127,8 @@ public: num++; return *this; } + + CBlockIndex * Tip() { return vpblock.size() ? vpblock.back() : NULL; } }; BOOST_FIXTURE_TEST_SUITE(versionbits_tests, TestingSetup) @@ -182,4 +187,108 @@ BOOST_AUTO_TEST_CASE(versionbits_test) } } +BOOST_AUTO_TEST_CASE(versionbits_computeblockversion) +{ + // Check that ComputeBlockVersion will set the appropriate bit correctly + // on mainnet. + const Consensus::Params &mainnetParams = Params(CBaseChainParams::MAIN).GetConsensus(); + + // Use the TESTDUMMY deployment for testing purposes. + int64_t bit = mainnetParams.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit; + int64_t nStartTime = mainnetParams.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime; + int64_t nTimeout = mainnetParams.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout; + + assert(nStartTime < nTimeout); + + // In the first chain, test that the bit is set by CBV until it has failed. + // In the second chain, test the bit is set by CBV while STARTED and + // LOCKED-IN, and then no longer set while ACTIVE. + VersionBitsTester firstChain, secondChain; + + // Start generating blocks before nStartTime + int64_t nTime = nStartTime - 1; + + // Before MedianTimePast of the chain has crossed nStartTime, the bit + // should not be set. + CBlockIndex *lastBlock = NULL; + lastBlock = firstChain.Mine(2016, nTime, VERSIONBITS_LAST_OLD_BLOCK_VERSION).Tip(); + BOOST_CHECK_EQUAL(ComputeBlockVersion(lastBlock, mainnetParams) & (1<<bit), 0); + + // Mine 2011 more blocks at the old time, and check that CBV isn't setting the bit yet. + for (int i=1; i<2012; i++) { + lastBlock = firstChain.Mine(2016+i, nTime, VERSIONBITS_LAST_OLD_BLOCK_VERSION).Tip(); + // This works because VERSIONBITS_LAST_OLD_BLOCK_VERSION happens + // to be 4, and the bit we're testing happens to be bit 28. + BOOST_CHECK_EQUAL(ComputeBlockVersion(lastBlock, mainnetParams) & (1<<bit), 0); + } + // Now mine 5 more blocks at the start time -- MTP should not have passed yet, so + // CBV should still not yet set the bit. + nTime = nStartTime; + for (int i=2012; i<=2016; i++) { + lastBlock = firstChain.Mine(2016+i, nTime, VERSIONBITS_LAST_OLD_BLOCK_VERSION).Tip(); + BOOST_CHECK_EQUAL(ComputeBlockVersion(lastBlock, mainnetParams) & (1<<bit), 0); + } + + // Advance to the next period and transition to STARTED, + lastBlock = firstChain.Mine(6048, nTime, VERSIONBITS_LAST_OLD_BLOCK_VERSION).Tip(); + // so ComputeBlockVersion should now set the bit, + BOOST_CHECK((ComputeBlockVersion(lastBlock, mainnetParams) & (1<<bit)) != 0); + // and should also be using the VERSIONBITS_TOP_BITS. + BOOST_CHECK_EQUAL(ComputeBlockVersion(lastBlock, mainnetParams) & VERSIONBITS_TOP_MASK, VERSIONBITS_TOP_BITS); + + // Check that ComputeBlockVersion will set the bit until nTimeout + nTime += 600; + int blocksToMine = 4032; // test blocks for up to 2 time periods + int nHeight = 6048; + // These blocks are all before nTimeout is reached. + while (nTime < nTimeout && blocksToMine > 0) { + lastBlock = firstChain.Mine(nHeight+1, nTime, VERSIONBITS_LAST_OLD_BLOCK_VERSION).Tip(); + BOOST_CHECK((ComputeBlockVersion(lastBlock, mainnetParams) & (1<<bit)) != 0); + BOOST_CHECK_EQUAL(ComputeBlockVersion(lastBlock, mainnetParams) & VERSIONBITS_TOP_MASK, VERSIONBITS_TOP_BITS); + blocksToMine--; + nTime += 600; + nHeight += 1; + }; + + nTime = nTimeout; + // FAILED is only triggered at the end of a period, so CBV should be setting + // the bit until the period transition. + for (int i=0; i<2015; i++) { + lastBlock = firstChain.Mine(nHeight+1, nTime, VERSIONBITS_LAST_OLD_BLOCK_VERSION).Tip(); + BOOST_CHECK((ComputeBlockVersion(lastBlock, mainnetParams) & (1<<bit)) != 0); + nHeight += 1; + } + // The next block should trigger no longer setting the bit. + lastBlock = firstChain.Mine(nHeight+1, nTime, VERSIONBITS_LAST_OLD_BLOCK_VERSION).Tip(); + BOOST_CHECK_EQUAL(ComputeBlockVersion(lastBlock, mainnetParams) & (1<<bit), 0); + + // On a new chain: + // verify that the bit will be set after lock-in, and then stop being set + // after activation. + nTime = nStartTime; + + // Mine one period worth of blocks, and check that the bit will be on for the + // next period. + lastBlock = secondChain.Mine(2016, nStartTime, VERSIONBITS_LAST_OLD_BLOCK_VERSION).Tip(); + BOOST_CHECK((ComputeBlockVersion(lastBlock, mainnetParams) & (1<<bit)) != 0); + + // Mine another period worth of blocks, signaling the new bit. + lastBlock = secondChain.Mine(4032, nStartTime, VERSIONBITS_TOP_BITS | (1<<bit)).Tip(); + // After one period of setting the bit on each block, it should have locked in. + // We keep setting the bit for one more period though, until activation. + BOOST_CHECK((ComputeBlockVersion(lastBlock, mainnetParams) & (1<<bit)) != 0); + + // Now check that we keep mining the block until the end of this period, and + // then stop at the beginning of the next period. + lastBlock = secondChain.Mine(6047, nStartTime, VERSIONBITS_LAST_OLD_BLOCK_VERSION).Tip(); + BOOST_CHECK((ComputeBlockVersion(lastBlock, mainnetParams) & (1<<bit)) != 0); + lastBlock = secondChain.Mine(6048, nStartTime, VERSIONBITS_LAST_OLD_BLOCK_VERSION).Tip(); + BOOST_CHECK_EQUAL(ComputeBlockVersion(lastBlock, mainnetParams) & (1<<bit), 0); + + // Finally, verify that after a soft fork has activated, CBV no longer uses + // VERSIONBITS_LAST_OLD_BLOCK_VERSION. + //BOOST_CHECK_EQUAL(ComputeBlockVersion(lastBlock, mainnetParams) & VERSIONBITS_TOP_MASK, VERSIONBITS_TOP_BITS); +} + + BOOST_AUTO_TEST_SUITE_END() |