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Stable release v32.1bitcoin/bitcoin · f0de87f04062 ↗3,020 source files · 47.5 MB stored on the server440 file guides

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1// Copyright (c) 2015-present The Bitcoin Core developers
2// Distributed under the MIT software license, see the accompanying
3// file COPYING or http://www.opensource.org/licenses/mit-license.php.
4
5#include <chain.h>
6#include <chainparams.h>
7#include <pow.h>
8#include <test/util/random.h>
9#include <test/util/common.h>
10#include <test/util/setup_common.h>
11#include <util/chaintype.h>
12
13#include <boost/test/unit_test.hpp>
14
15BOOST_FIXTURE_TEST_SUITE(pow_tests, BasicTestingSetup)
16
17/* Test calculation of next difficulty target with no constraints applying */
18BOOST_AUTO_TEST_CASE(get_next_work)
19{
20    const auto chainParams = CreateChainParams(*m_node.args, ChainType::MAIN);
21    int64_t nLastRetargetTime = 1261130161; // Block #30240
22    CBlockIndex pindexLast;
23    pindexLast.nHeight = 32255;
24    pindexLast.nTime = 1262152739;  // Block #32255
25    pindexLast.nBits = 0x1d00ffff;
26
27    // Here (and below): expected_nbits is calculated in
28    // CalculateNextWorkRequired(); redoing the calculation here would be just
29    // reimplementing the same code that is written in pow.cpp. Rather than
30    // copy that code, we just hardcode the expected result.
31    unsigned int expected_nbits = 0x1d00d86aU;
32    BOOST_CHECK_EQUAL(CalculateNextWorkRequired(&pindexLast, nLastRetargetTime, chainParams->GetConsensus()), expected_nbits);
33    BOOST_CHECK(PermittedDifficultyTransition(chainParams->GetConsensus(), pindexLast.nHeight+1, pindexLast.nBits, expected_nbits));
34}
35
36/* Test the constraint on the upper bound for next work */
37BOOST_AUTO_TEST_CASE(get_next_work_pow_limit)
38{
39    const auto chainParams = CreateChainParams(*m_node.args, ChainType::MAIN);
40    int64_t nLastRetargetTime = 1231006505; // Block #0
41    CBlockIndex pindexLast;
42    pindexLast.nHeight = 2015;
43    pindexLast.nTime = 1233061996;  // Block #2015
44    pindexLast.nBits = 0x1d00ffff;
45    unsigned int expected_nbits = 0x1d00ffffU;
46    BOOST_CHECK_EQUAL(CalculateNextWorkRequired(&pindexLast, nLastRetargetTime, chainParams->GetConsensus()), expected_nbits);
47    BOOST_CHECK(PermittedDifficultyTransition(chainParams->GetConsensus(), pindexLast.nHeight+1, pindexLast.nBits, expected_nbits));
48}
49
50/* Test the constraint on the lower bound for actual time taken */
51BOOST_AUTO_TEST_CASE(get_next_work_lower_limit_actual)
52{
53    const auto chainParams = CreateChainParams(*m_node.args, ChainType::MAIN);
54    int64_t nLastRetargetTime = 1279008237; // Block #66528
55    CBlockIndex pindexLast;
56    pindexLast.nHeight = 68543;
57    pindexLast.nTime = 1279297671;  // Block #68543
58    pindexLast.nBits = 0x1c05a3f4;
59    unsigned int expected_nbits = 0x1c0168fdU;
60    BOOST_CHECK_EQUAL(CalculateNextWorkRequired(&pindexLast, nLastRetargetTime, chainParams->GetConsensus()), expected_nbits);
61    BOOST_CHECK(PermittedDifficultyTransition(chainParams->GetConsensus(), pindexLast.nHeight+1, pindexLast.nBits, expected_nbits));
62    // Test that reducing nbits further would not be a PermittedDifficultyTransition.
63    unsigned int invalid_nbits = expected_nbits-1;
64    BOOST_CHECK(!PermittedDifficultyTransition(chainParams->GetConsensus(), pindexLast.nHeight+1, pindexLast.nBits, invalid_nbits));
65}
66
67/* Test the constraint on the upper bound for actual time taken */
68BOOST_AUTO_TEST_CASE(get_next_work_upper_limit_actual)
69{
70    const auto chainParams = CreateChainParams(*m_node.args, ChainType::MAIN);
71    int64_t nLastRetargetTime = 1263163443; // NOTE: Not an actual block time
72    CBlockIndex pindexLast;
73    pindexLast.nHeight = 46367;
74    pindexLast.nTime = 1269211443;  // Block #46367
75    pindexLast.nBits = 0x1c387f6f;
76    unsigned int expected_nbits = 0x1d00e1fdU;
77    BOOST_CHECK_EQUAL(CalculateNextWorkRequired(&pindexLast, nLastRetargetTime, chainParams->GetConsensus()), expected_nbits);
78    BOOST_CHECK(PermittedDifficultyTransition(chainParams->GetConsensus(), pindexLast.nHeight+1, pindexLast.nBits, expected_nbits));
79    // Test that increasing nbits further would not be a PermittedDifficultyTransition.
80    unsigned int invalid_nbits = expected_nbits+1;
81    BOOST_CHECK(!PermittedDifficultyTransition(chainParams->GetConsensus(), pindexLast.nHeight+1, pindexLast.nBits, invalid_nbits));
82}
83
84BOOST_AUTO_TEST_CASE(CheckProofOfWork_test_negative_target)
85{
86    const auto consensus = CreateChainParams(*m_node.args, ChainType::MAIN)->GetConsensus();
87    uint256 hash;
88    unsigned int nBits;
89    nBits = UintToArith256(consensus.powLimit).GetCompact(true);
90    hash = uint256{1};
91    BOOST_CHECK(!CheckProofOfWork(hash, nBits, consensus));
92}
93
94BOOST_AUTO_TEST_CASE(CheckProofOfWork_test_overflow_target)
95{
96    const auto consensus = CreateChainParams(*m_node.args, ChainType::MAIN)->GetConsensus();
97    uint256 hash;
98    unsigned int nBits{~0x00800000U};
99    hash = uint256{1};
100    BOOST_CHECK(!CheckProofOfWork(hash, nBits, consensus));
101}
102
103BOOST_AUTO_TEST_CASE(CheckProofOfWork_test_too_easy_target)
104{
105    const auto consensus = CreateChainParams(*m_node.args, ChainType::MAIN)->GetConsensus();
106    uint256 hash;
107    unsigned int nBits;
108    arith_uint256 nBits_arith = UintToArith256(consensus.powLimit);
109    nBits_arith *= 2;
110    nBits = nBits_arith.GetCompact();
111    hash = uint256{1};
112    BOOST_CHECK(!CheckProofOfWork(hash, nBits, consensus));
113}
114
115BOOST_AUTO_TEST_CASE(CheckProofOfWork_test_biger_hash_than_target)
116{
117    const auto consensus = CreateChainParams(*m_node.args, ChainType::MAIN)->GetConsensus();
118    uint256 hash;
119    unsigned int nBits;
120    arith_uint256 hash_arith = UintToArith256(consensus.powLimit);
121    nBits = hash_arith.GetCompact();
122    hash_arith *= 2; // hash > nBits
123    hash = ArithToUint256(hash_arith);
124    BOOST_CHECK(!CheckProofOfWork(hash, nBits, consensus));
125}
126
127BOOST_AUTO_TEST_CASE(CheckProofOfWork_test_zero_target)
128{
129    const auto consensus = CreateChainParams(*m_node.args, ChainType::MAIN)->GetConsensus();
130    uint256 hash;
131    unsigned int nBits;
132    arith_uint256 hash_arith{0};
133    nBits = hash_arith.GetCompact();
134    hash = ArithToUint256(hash_arith);
135    BOOST_CHECK(!CheckProofOfWork(hash, nBits, consensus));
136}
137
138BOOST_AUTO_TEST_CASE(GetBlockProofEquivalentTime_test)
139{
140    const auto chainParams = CreateChainParams(*m_node.args, ChainType::MAIN);
141    std::vector<CBlockIndex> blocks(10000);
142    for (int i = 0; i < 10000; i++) {
143        blocks[i].pprev = i ? &blocks[i - 1] : nullptr;
144        blocks[i].nHeight = i;
145        blocks[i].nTime = 1269211443 + i * chainParams->GetConsensus().nPowTargetSpacing;
146        blocks[i].nBits = 0x207fffff; /* target 0x7fffff000... */
147        blocks[i].nChainWork = i ? blocks[i - 1].nChainWork + GetBlockProof(blocks[i - 1]) : arith_uint256(0);
148    }
149
150    for (int j = 0; j < 1000; j++) {
151        CBlockIndex *p1 = &blocks[m_rng.randrange(10000)];
152        CBlockIndex *p2 = &blocks[m_rng.randrange(10000)];
153        CBlockIndex *p3 = &blocks[m_rng.randrange(10000)];
154
155        int64_t tdiff = GetBlockProofEquivalentTime(*p1, *p2, *p3, chainParams->GetConsensus());
156        BOOST_CHECK_EQUAL(tdiff, p1->GetBlockTime() - p2->GetBlockTime());
157    }
158}
159
160void sanity_check_chainparams(const ArgsManager& args, ChainType chain_type)
161{
162    const auto chainParams = CreateChainParams(args, chain_type);
163    const auto consensus = chainParams->GetConsensus();
164
165    // hash genesis is correct
166    BOOST_CHECK_EQUAL(consensus.hashGenesisBlock, chainParams->GenesisBlock().GetHash());
167
168    // target timespan is an even multiple of spacing
169    BOOST_CHECK_EQUAL(consensus.nPowTargetTimespan % consensus.nPowTargetSpacing, 0);
170
171    // genesis nBits is positive, doesn't overflow and is lower than powLimit
172    arith_uint256 pow_compact;
173    bool neg, over;
174    pow_compact.SetCompact(chainParams->GenesisBlock().nBits, &neg, &over);
175    BOOST_CHECK(!neg);
176    BOOST_CHECK(pow_compact != 0);
177    BOOST_CHECK(!over);
178    BOOST_CHECK(UintToArith256(consensus.powLimit) >= pow_compact);
179
180    // check max target * 4*nPowTargetTimespan doesn't overflow -- see pow.cpp:CalculateNextWorkRequired()
181    if (!consensus.fPowNoRetargeting) {
182        arith_uint256 targ_max{UintToArith256(uint256{"ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"})};
183        targ_max /= consensus.nPowTargetTimespan*4;
184        BOOST_CHECK(UintToArith256(consensus.powLimit) < targ_max);
185    }
186}
187
188BOOST_AUTO_TEST_CASE(ChainParams_MAIN_sanity)
189{
190    sanity_check_chainparams(*m_node.args, ChainType::MAIN);
191}
192
193BOOST_AUTO_TEST_CASE(ChainParams_REGTEST_sanity)
194{
195    sanity_check_chainparams(*m_node.args, ChainType::REGTEST);
196}
197
198BOOST_AUTO_TEST_CASE(ChainParams_TESTNET_sanity)
199{
200    sanity_check_chainparams(*m_node.args, ChainType::TESTNET);
201}
202
203BOOST_AUTO_TEST_CASE(ChainParams_TESTNET4_sanity)
204{
205    sanity_check_chainparams(*m_node.args, ChainType::TESTNET4);
206}
207
208BOOST_AUTO_TEST_CASE(ChainParams_SIGNET_sanity)
209{
210    sanity_check_chainparams(*m_node.args, ChainType::SIGNET);
211}
212
213BOOST_AUTO_TEST_SUITE_END()
214

src/wallet/receive.cpp

src/wallet/coinselection.cpp

src/consensus/validation.h

src/primitives/transaction.cpp

src/script/descriptor.cpp

src/bitcoin-cli.cpp

src/rpc/blockchain.cpp

src/rpc/rawtransaction.cpp

src/init.cpp

src/crypto/sha256.cpp

src/consensus/merkle.h

src/consensus/tx_check.h

src/consensus/tx_verify.h

src/policy/feerate.h

src/policy/feerate.cpp

src/primitives/transaction_identifier.h

src/chainparamsbase.h

src/chainparamsbase.cpp

src/util/moneystr.cpp

src/crypto/ripemd160.h

src/crypto/sha1.h

src/crypto/sha512.h

src/crypto/hmac_sha256.h

src/crypto/hmac_sha512.h

src/crypto/hmac_sha256.cpp

src/crypto/hmac_sha512.cpp

src/crypto/hkdf_sha256_32.h

src/crypto/hkdf_sha256_32.cpp

src/support/cleanse.h

src/support/cleanse.cpp

src/crypto/siphash.cpp

src/crypto/muhash.h

src/crypto/chacha20.h

src/crypto/poly1305.h

src/crypto/chacha20poly1305.h

src/crypto/chacha20poly1305.cpp

src/util/chaintype.cpp

src/util/obfuscation.h

src/util/byte_units.h

src/util/overflow.h

src/blockencodings.cpp

src/net_permissions.cpp

src/policy/packages.cpp

src/policy/rbf.cpp

src/policy/truc_policy.cpp

src/policy/ephemeral_policy.cpp

src/policy/settings.cpp

src/policy/policy.cpp

src/node/transaction.cpp

src/node/coin.cpp

src/rpc/client.cpp

src/rpc/external_signer.cpp

src/rpc/request.cpp

src/rpc/server_util.cpp

src/rpc/fees.cpp

src/rpc/output_script.cpp

src/rpc/rawtransaction_util.cpp

src/rpc/rawtransaction_util.h

src/rpc/register.h

src/rpc/request.h

src/rpc/server_util.h

src/rpc/protocol.h

src/rpc/server.h

src/rpc/signmessage.cpp

src/rpc/txoutproof.cpp

src/rpc/util.cpp

src/rpc/util.h

src/wallet/rpc/addresses.cpp

src/wallet/rpc/backup.cpp

src/wallet/rpc/coins.cpp

src/wallet/rpc/encrypt.cpp

src/wallet/rpc/signmessage.cpp

src/wallet/rpc/util.cpp

src/wallet/rpc/util.h

src/wallet/coincontrol.cpp

src/wallet/coincontrol.h

src/wallet/context.cpp

src/wallet/context.h

src/wallet/crypter.cpp

src/wallet/crypter.h

src/wallet/db.cpp

src/wallet/export.cpp

src/wallet/external_signer_scriptpubkeyman.cpp

src/wallet/rpc/spend.cpp

src/wallet/rpc/transactions.cpp

src/wallet/rpc/wallet.cpp

src/wallet/feebumper.cpp

src/wallet/feebumper.h

src/index/base.h

src/index/base.cpp

src/index/txindex.h

src/index/txindex.cpp

src/index/txindex_key.h

src/index/txospenderindex.h

src/index/txospenderindex.cpp

src/index/blockfilterindex.h

src/index/blockfilterindex.cpp

src/index/coinstatsindex.h

src/index/coinstatsindex.cpp

src/index/db_key.h

src/index/disktxpos.h

src/kernel/chain.cpp

src/kernel/chain.h

src/kernel/checks.cpp

src/kernel/checks.h

src/kernel/context.cpp

src/kernel/context.h

src/kernel/cs_main.cpp

src/kernel/cs_main.h

src/kernel/disconnected_transactions.cpp

src/kernel/disconnected_transactions.h

src/kernel/mempool_removal_reason.cpp

src/kernel/mempool_removal_reason.h

src/kernel/coinstats.cpp

src/kernel/coinstats.h

src/kernel/chainparams.cpp

src/kernel/chainparams.h

src/wallet/sqlite.cpp

src/wallet/sqlite.h

src/wallet/transaction.cpp

src/wallet/transaction.h

src/wallet/dump.cpp

src/wallet/dump.h

src/wallet/init.cpp

src/wallet/walletutil.cpp

src/wallet/walletutil.h

src/wallet/wallettool.cpp

src/wallet/wallettool.h

src/wallet/export.h

src/wallet/migrate.cpp

src/wallet/migrate.h

src/wallet/db.h

src/wallet/walletdb.cpp

src/wallet/interfaces.cpp

src/wallet/scriptpubkeyman.cpp

src/wallet/scriptpubkeyman.h

src/kernel/bitcoinkernel.cpp

src/kernel/bitcoinkernel.h

src/kernel/bitcoinkernel_wrapper.h

src/node/chainstate.cpp

src/node/chainstate.h

src/node/blockstorage.cpp

src/node/blockstorage.h

src/node/mempool_persist.cpp

src/node/mempool_persist.h

src/node/utxo_snapshot.cpp

src/node/utxo_snapshot.h

src/node/kernel_notifications.cpp

src/node/kernel_notifications.h

src/node/blockmanager_args.cpp

src/kernel/blockmanager_opts.h

src/util/expected.cpp

src/policy/settings.h

src/util/types.h

src/kernel/messagestartchars.h

src/kernel/warning.h

src/util/exception.h

src/common/license_info.h

src/node/coins_view_args.h

src/node/database_args.h

src/util/batchpriority.h

src/util/ui_change_type.h

src/node/coins_view_args.cpp

src/node/peerman_args.h

src/util/serfloat.h

src/node/blockmanager_args.h

src/node/database_args.cpp

src/util/overloaded.h

src/interfaces/types.h

src/node/chainstatemanager_args.h

src/node/minisketchwrapper.h

src/util/macros.h

src/util/syserror.h

src/common/run_command.h

src/util/bytevectorhash.cpp

src/node/mempool_persist_args.cpp

src/util/exec.h

src/util/rbf.h

src/crypto/hex_base.h

src/node/mempool_persist_args.h

src/interfaces/echo.h

src/util/any.h

src/util/batchpriority.cpp

src/util/threadnames.h

src/node/coin.h

src/node/mempool_args.h

src/util/asmap.h

src/util/bytevectorhash.h

src/node/context.cpp

src/util/insert.h

src/util/readwritefile.h

src/node/peerman_args.cpp

src/node/interface_ui.cpp

src/interfaces/handler.h

src/node/mining_args.h

src/util/hasher.cpp

src/common/init.h

src/kernel/mempool_limits.h

src/common/system.h

src/crypto/sha3.h

src/util/threadinterrupt.cpp

src/node/protocol_version.h

src/util/exception.cpp

src/common/messages.h

src/node/connection_types.cpp

src/util/bip32.h

src/common/license_info.cpp

src/util/stdmutex.h

src/common/run_command.cpp

src/util/check.cpp

src/util/golombrice.h

src/node/types.h

src/node/timeoffsets.h

src/util/readwritefile.cpp

src/util/fastrange.h

src/util/signalinterrupt.h

src/util/task_runner.h

src/util/syserror.cpp

src/common/interfaces.cpp

src/common/types.h

src/util/threadinterrupt.h

src/kernel/chainstatemanager_opts.h

src/node/psbt.h

src/policy/ephemeral_policy.h

src/util/trace.h

src/common/url.cpp

src/kernel/mempool_options.h

src/util/serfloat.cpp

src/kernel/notifications_interface.h

src/node/timeoffsets.cpp

src/node/warnings.cpp

src/util/hash_type.h

src/crypto/hex_base.cpp

src/node/eviction.h

src/util/tokenbucket.h

src/crypto/aes.h

src/common/pcp.h

src/util/feefrac.cpp

src/node/transaction.h

src/util/threadnames.cpp

src/common/signmessage.h

src/util/exec.cpp

src/util/signalinterrupt.cpp

src/clientversion.cpp

src/common/signmessage.cpp

src/compat/assumptions.h

src/compat/byteswap.h

src/deploymentinfo.cpp

src/deploymentinfo.h

src/deploymentstatus.cpp

src/deploymentstatus.h

src/dummywallet.cpp

src/external_signer.h

src/init/bitcoin-gui.cpp

src/init/bitcoin-node.cpp

src/init/bitcoin-qt.cpp

src/init/bitcoin-wallet.cpp

src/init/bitcoind.cpp

src/init/common.h

src/interfaces/init.h

src/interfaces/ipc.h

src/key_io.h

src/logging/categories.h

src/logging/timer.h

src/mapport.h

src/musig.h

src/net_permissions.h

src/netgroup.h

src/netmessagemaker.h

src/node/chainstatemanager_args.cpp

src/node/connection_types.h

src/node/context.h

src/node/interface_ui.h

src/node/mempool_args.cpp

src/node/mining_args.cpp

src/node/minisketchwrapper.cpp

src/node/txreconciliation.h

src/policy/fees/estimator_args.cpp

src/policy/fees/estimator_args.h

src/policy/fees/estimator_man.cpp

src/policy/fees/estimator_man.h

src/policy/packages.h

src/policy/rbf.h

src/policy/truc_policy.h

src/pow.h

src/primitives/block.cpp

src/randomenv.h

src/rest.h

src/script/keyorigin.h

src/script/parsing.cpp

src/script/parsing.h

src/script/script_error.h

src/script/sigcache.cpp

src/script/sigcache.h

src/script/solver.h

src/script/verify_flags.h

src/semaphore_grant.h

src/signet.h

src/span.h

src/support/allocators/secure.h

src/support/allocators/zeroafterfree.h

src/util/tokenpipe.cpp

src/util/translation.h

src/util/vector.h

src/versionbits.h

src/versionbits_impl.h

src/wallet/external_signer_scriptpubkeyman.h

src/wallet/fees.h

src/wallet/load.h

src/wallet/receive.h

src/wallet/rpc/wallet.h

src/wallet/types.h

src/walletinitinterface.h

src/zmq/zmqabstractnotifier.cpp

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