// Copyright (c) 2015-2017 The Bitcoin Core developers // Distributed under the MIT/X11 software license, see the accompanying // file COPYING or http://www.opensource.org/licenses/mit-license.php. #include #include #include #include #include #include #include BOOST_FIXTURE_TEST_SUITE(pow_tests, BasicTestingSetup) /* Test calculation of next difficulty target with no constraints applying */ BOOST_AUTO_TEST_CASE(get_next_work) { const auto chainParams = CreateChainParams(CBaseChainParams::MAIN); int64_t nLastRetargetTime = 1358118740; // Block #278207 CBlockIndex pindexLast; pindexLast.nHeight = 280223; pindexLast.nTime = 1358378777; // Block #280223 pindexLast.nBits = 0x1c0ac141; BOOST_CHECK_EQUAL(CalculateDigishieldNextWorkRequired(&pindexLast, nLastRetargetTime, chainParams->GetConsensus()), 0x1c1021e1); } /* Test the constraint on the upper bound for next work */ BOOST_AUTO_TEST_CASE(get_next_work_pow_limit) { const auto chainParams = CreateChainParams(CBaseChainParams::MAIN); int64_t nLastRetargetTime = 1317972665; // Block #0 CBlockIndex pindexLast; pindexLast.nHeight = 2015; pindexLast.nTime = 1318480354; // Block #2015 pindexLast.nBits = 0x1e0ffff0; BOOST_CHECK_EQUAL(CalculateDigishieldNextWorkRequired(&pindexLast, nLastRetargetTime, chainParams->GetConsensus()), 0x1e17ffe8); } /* Test the constraint on the lower bound for actual time taken */ BOOST_AUTO_TEST_CASE(get_next_work_lower_limit_actual) { const auto chainParams = CreateChainParams(CBaseChainParams::MAIN); int64_t nLastRetargetTime = 1401682934; // NOTE: Not an actual block time CBlockIndex pindexLast; pindexLast.nHeight = 578591; pindexLast.nTime = 1401757934; // Block #578591 pindexLast.nBits = 0x1b075cf1; BOOST_CHECK_EQUAL(CalculateDigishieldNextWorkRequired(&pindexLast, nLastRetargetTime, chainParams->GetConsensus()), 0x1b0b0b69); } /* Test the constraint on the upper bound for actual time taken */ BOOST_AUTO_TEST_CASE(get_next_work_upper_limit_actual) { const auto chainParams = CreateChainParams(CBaseChainParams::MAIN); int64_t nLastRetargetTime = 1463690315; // NOTE: Not an actual block time CBlockIndex pindexLast; pindexLast.nHeight = 1001951; pindexLast.nTime = 1464900315; // Block #46367 pindexLast.nBits = 0x1b015318; BOOST_CHECK_EQUAL(CalculateDigishieldNextWorkRequired(&pindexLast, nLastRetargetTime, chainParams->GetConsensus()), 0x1b01fca4); } BOOST_AUTO_TEST_CASE(GetBlockProofEquivalentTime_test) { const auto chainParams = CreateChainParams(CBaseChainParams::MAIN); std::vector blocks(10000); for (int i = 0; i < 10000; i++) { blocks[i].pprev = i ? &blocks[i - 1] : nullptr; blocks[i].nHeight = i; blocks[i].nTime = 1269211443 + i * chainParams->GetConsensus().nPowTargetSpacing; blocks[i].nBits = 0x207fffff; /* target 0x7fffff000... */ blocks[i].nChainWork = i ? blocks[i - 1].nChainWork + GetBlockProof(blocks[i - 1]) : arith_uint256(0); } for (int j = 0; j < 1000; j++) { CBlockIndex *p1 = &blocks[InsecureRandRange(10000)]; CBlockIndex *p2 = &blocks[InsecureRandRange(10000)]; CBlockIndex *p3 = &blocks[InsecureRandRange(10000)]; int64_t tdiff = GetBlockProofEquivalentTime(*p1, *p2, *p3, chainParams->GetConsensus()); BOOST_CHECK_EQUAL(tdiff, p1->GetBlockTime() - p2->GetBlockTime()); } } BOOST_AUTO_TEST_SUITE_END()