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// Copyright (c) 2015-2021 The Dogecoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include <arith_uint256.h>
#include <chainparams.h>
#include <dogecoin.h>
#include <test/util/setup_common.h>
#include <boost/test/unit_test.hpp>
BOOST_FIXTURE_TEST_SUITE(dogecoin_tests, TestingSetup)
BOOST_AUTO_TEST_CASE(subsidy_test)
{
const int nHeight = 36;
const auto chainParams = CreateChainParams(*m_node.args, CBaseChainParams::MAIN);
const auto params = chainParams->GetConsensus();
uint256 prevHash = uint256S("0x4eb7c3f5914a84a25ea0ae12c39d1e5390a8ea576490035b63dcd03fcc14d106"); // Block 35
CAmount nSubsidy = GetDogecoinBlockSubsidy(nHeight, params, prevHash);
BOOST_CHECK_EQUAL(nSubsidy, 228450 * COIN);
}
BOOST_AUTO_TEST_CASE(subsidy_limit_test_first_100k)
{
const auto chainParams = CreateChainParams(*m_node.args, CBaseChainParams::MAIN);
const auto params = chainParams->GetConsensus();
CAmount nSum = 0;
arith_uint256 prevHash = UintToArith256(uint256S("0"));
for (int nHeight = 0; nHeight <= 100000; nHeight++) {
CAmount nSubsidy = GetDogecoinBlockSubsidy(nHeight, params, ArithToUint256(prevHash));
BOOST_CHECK(MoneyRange(nSubsidy));
BOOST_CHECK(nSubsidy <= 1000000 * COIN);
nSum += nSubsidy;
// Use nSubsidy to give us some variation in previous block hash, without requiring full block templates
prevHash += nSubsidy;
}
const CAmount expected = 54894174438 * COIN;
BOOST_CHECK_EQUAL(expected, nSum);
}
BOOST_AUTO_TEST_CASE(subsidy_limit_test_100k_145k)
{
const auto chainParams = CreateChainParams(*m_node.args, CBaseChainParams::MAIN);
const auto params = chainParams->GetConsensus();
CAmount nSum = 0;
arith_uint256 prevHash = UintToArith256(uint256S("0"));
for (int nHeight = 100000; nHeight <= 145000; nHeight++) {
CAmount nSubsidy = GetDogecoinBlockSubsidy(nHeight, params, ArithToUint256(prevHash));
BOOST_CHECK(MoneyRange(nSubsidy));
BOOST_CHECK(nSubsidy <= 500000 * COIN);
nSum += nSubsidy;
// Use nSubsidy to give us some variation in previous block hash, without requiring full block templates
prevHash += nSubsidy;
}
const CAmount expected = 12349960000 * COIN;
BOOST_CHECK_EQUAL(expected, nSum);
}
// Check the simplified rewards after block 145,000
BOOST_AUTO_TEST_CASE(subsidy_limit_test_post_145k)
{
const auto chainParams = CreateChainParams(*m_node.args, CBaseChainParams::MAIN);
const auto params = chainParams->GetConsensus();
CAmount nSum = 0;
const uint256 prevHash = uint256S("0");
for (int nHeight = 145000; nHeight < 600000; nHeight++) {
CAmount nSubsidy = GetDogecoinBlockSubsidy(nHeight, params, prevHash);
CAmount nExpectedSubsidy = (500000 >> (nHeight / 100000)) * COIN;
BOOST_CHECK(MoneyRange(nSubsidy));
BOOST_CHECK_EQUAL(nSubsidy, nExpectedSubsidy);
nSum += nSubsidy;
}
// Test reward at 600k+ is constant
CAmount nConstantSubsidy = GetDogecoinBlockSubsidy(600000, params, prevHash);
BOOST_CHECK_EQUAL(nConstantSubsidy, 10000 * COIN);
nConstantSubsidy = GetDogecoinBlockSubsidy(700000, params, prevHash);
BOOST_CHECK_EQUAL(nConstantSubsidy, 10000 * COIN);
}
BOOST_AUTO_TEST_CASE(get_next_work_difficulty_limit)
{
SelectParams(CBaseChainParams::MAIN);
const Consensus::Params& params = Params().GetConsensus();
CBlockIndex pindexLast;
int64_t nLastRetargetTime = 1386474927; // Block # 1
pindexLast.nHeight = 239;
pindexLast.nTime = 1386475638; // Block #239
pindexLast.nBits = 0x1e0ffff0;
BOOST_CHECK_EQUAL(CalculateDogecoinNextWorkRequired(&pindexLast, nLastRetargetTime, params), 0x1e00ffffU);
}
BOOST_AUTO_TEST_CASE(get_next_work_pre_digishield)
{
SelectParams(CBaseChainParams::MAIN);
const Consensus::Params& params = Params().GetConsensus();
CBlockIndex pindexLast;
int64_t nLastRetargetTime = 1386942008; // Block 9359
pindexLast.nHeight = 9599;
pindexLast.nTime = 1386954113;
pindexLast.nBits = 0x1c1a1206;
BOOST_CHECK_EQUAL(CalculateDogecoinNextWorkRequired(&pindexLast, nLastRetargetTime, params), 0x1c15ea59U);
}
BOOST_AUTO_TEST_CASE(get_next_work_digishield)
{
SelectParams(CBaseChainParams::MAIN);
const Consensus::Params& params = Params().GetConsensus();
CBlockIndex pindexLast;
int64_t nLastRetargetTime = 1395094427;
// First hard-fork at 145,000, which applies to block 145,001 onwards
pindexLast.nHeight = 145000;
pindexLast.nTime = 1395094679;
pindexLast.nBits = 0x1b499dfd;
BOOST_CHECK_EQUAL(CalculateDogecoinNextWorkRequired(&pindexLast, nLastRetargetTime, params), 0x1b671062U);
}
BOOST_AUTO_TEST_CASE(get_next_work_digishield_modulated_upper)
{
SelectParams(CBaseChainParams::MAIN);
const Consensus::Params& params = Params().GetConsensus();
CBlockIndex pindexLast;
int64_t nLastRetargetTime = 1395100835;
// Test the upper bound on modulated time using mainnet block #145,107
pindexLast.nHeight = 145107;
pindexLast.nTime = 1395101360;
pindexLast.nBits = 0x1b3439cd;
BOOST_CHECK_EQUAL(CalculateDogecoinNextWorkRequired(&pindexLast, nLastRetargetTime, params), 0x1b4e56b3U);
}
BOOST_AUTO_TEST_CASE(get_next_work_digishield_modulated_lower)
{
SelectParams(CBaseChainParams::MAIN);
const Consensus::Params& params = Params().GetConsensus();
CBlockIndex pindexLast;
int64_t nLastRetargetTime = 1395380517;
// Test the lower bound on modulated time using mainnet block #149,423
pindexLast.nHeight = 149423;
pindexLast.nTime = 1395380447;
pindexLast.nBits = 0x1b446f21;
BOOST_CHECK_EQUAL(CalculateDogecoinNextWorkRequired(&pindexLast, nLastRetargetTime, params), 0x1b335358U);
}
BOOST_AUTO_TEST_CASE(get_next_work_digishield_rounding)
{
SelectParams(CBaseChainParams::MAIN);
const Consensus::Params& params = Params().GetConsensus();
CBlockIndex pindexLast;
int64_t nLastRetargetTime = 1395094679;
// Test case for correct rounding of modulated time - this depends on
// handling of integer division, and is not obvious from the code
pindexLast.nHeight = 145001;
pindexLast.nTime = 1395094727;
pindexLast.nBits = 0x1b671062;
BOOST_CHECK_EQUAL(CalculateDogecoinNextWorkRequired(&pindexLast, nLastRetargetTime, params), 0x1b6558a4U);
}
BOOST_AUTO_TEST_SUITE_END()
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