LCOV - code coverage report
Current view: top level - src/test/util - mining.cpp (source / functions) Coverage Total Hit
Test: fuzz_coverage.info Lines: 68.7 % 99 68
Test Date: 2026-09-03 06:16:07 Functions: 80.0 % 10 8
Branches: 37.6 % 178 67

             Branch data     Line data    Source code
       1                 :             : // Copyright (c) 2019-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 <test/util/mining.h>
       6                 :             : 
       7                 :             : #include <addresstype.h>
       8                 :             : #include <chain.h>
       9                 :             : #include <chainparams.h>
      10                 :             : #include <consensus/merkle.h>
      11                 :             : #include <consensus/validation.h>
      12                 :             : #include <interfaces/mining.h>
      13                 :             : #include <key_io.h>
      14                 :             : #include <node/context.h>
      15                 :             : #include <pow.h>
      16                 :             : #include <primitives/block.h>
      17                 :             : #include <primitives/transaction.h>
      18                 :             : #include <script/script.h>
      19                 :             : #include <sync.h>
      20                 :             : #include <test/util/script.h>
      21                 :             : #include <uint256.h>
      22                 :             : #include <util/check.h>
      23                 :             : #include <validation.h>
      24                 :             : #include <validationinterface.h>
      25                 :             : #include <versionbits.h>
      26                 :             : 
      27                 :             : #include <cstdint>
      28                 :             : #include <memory>
      29                 :             : #include <optional>
      30                 :             : #include <utility>
      31                 :             : 
      32                 :             : using node::NodeContext;
      33                 :             : 
      34                 :           0 : COutPoint generatetoaddress(const NodeContext& node, const std::string& address)
      35                 :             : {
      36                 :           0 :     const auto dest = DecodeDestination(address);
      37   [ #  #  #  # ]:           0 :     assert(IsValidDestination(dest));
      38         [ #  # ]:           0 :     return MineBlock(node, {
      39                 :             :         .coinbase_output_script = GetScriptForDestination(dest),
      40                 :           0 :     });
      41         [ #  # ]:           0 : }
      42                 :             : 
      43                 :           2 : std::vector<std::shared_ptr<CBlock>> CreateBlockChain(size_t total_height, const CChainParams& params)
      44                 :             : {
      45                 :           2 :     std::vector<std::shared_ptr<CBlock>> ret{total_height};
      46                 :           2 :     auto time{params.GenesisBlock().nTime};
      47                 :             :     // NOTE: here `height` does not correspond to the block height but the block height - 1.
      48         [ +  + ]:         402 :     for (size_t height{0}; height < total_height; ++height) {
      49   [ +  -  -  + ]:         800 :         CBlock& block{*(ret.at(height) = std::make_shared<CBlock>())};
      50                 :             : 
      51         [ +  - ]:         400 :         CMutableTransaction coinbase_tx;
      52                 :         400 :         coinbase_tx.nLockTime = static_cast<uint32_t>(height);
      53         [ +  - ]:         400 :         coinbase_tx.vin.resize(1);
      54                 :         400 :         coinbase_tx.vin[0].prevout.SetNull();
      55         [ +  - ]:         400 :         coinbase_tx.vin[0].nSequence = CTxIn::MAX_SEQUENCE_NONFINAL; // Make sure timelock is enforced.
      56         [ +  - ]:         400 :         coinbase_tx.vout.resize(1);
      57                 :         400 :         coinbase_tx.vout[0].scriptPubKey = P2WSH_OP_TRUE;
      58   [ +  -  +  - ]:         400 :         coinbase_tx.vout[0].nValue = GetBlockSubsidy(height + 1, params.GetConsensus());
      59                 :             :         // Always include OP_0 as a dummy extraNonce.
      60   [ +  -  +  - ]:         400 :         coinbase_tx.vin[0].scriptSig = CScript() << (height + 1) << OP_0;
      61   [ +  +  +  -  :         800 :         block.vtx = {MakeTransactionRef(std::move(coinbase_tx))};
             -  -  -  - ]
      62                 :             : 
      63                 :         400 :         block.nVersion = VERSIONBITS_LAST_OLD_BLOCK_VERSION;
      64   [ +  +  +  -  :         400 :         block.hashPrevBlock = (height >= 1 ? *ret.at(height - 1) : params.GenesisBlock()).GetHash();
                   +  - ]
      65         [ +  - ]:         400 :         block.hashMerkleRoot = BlockMerkleRoot(block);
      66                 :         400 :         block.nTime = ++time;
      67                 :         400 :         block.nBits = params.GenesisBlock().nBits;
      68                 :         400 :         block.nNonce = 0;
      69                 :             : 
      70   [ +  -  +  -  :         762 :         while (!CheckProofOfWork(block.GetHash(), block.nBits, params.GetConsensus())) {
                   +  + ]
      71                 :         362 :             ++block.nNonce;
      72         [ -  + ]:         362 :             assert(block.nNonce);
      73                 :             :         }
      74                 :         400 :     }
      75                 :           2 :     return ret;
      76   [ +  -  +  - ]:         800 : }
      77                 :             : 
      78                 :           0 : bool BuildChain(const NodeContext& node, const CBlockIndex* pindex,
      79                 :             :     const CScript& coinbase_script_pub_key,
      80                 :             :     size_t length,
      81                 :             :     std::vector<std::shared_ptr<CBlock>>& chain)
      82                 :             : {
      83                 :           0 :     auto mining{interfaces::MakeMining(node)};
      84   [ #  #  #  # ]:           0 :     const Consensus::Params& consensus{Assert(node.chainman)->GetConsensus()};
      85                 :             : 
      86         [ #  # ]:           0 :     chain.resize(length);
      87         [ #  # ]:           0 :     for (auto& chain_block : chain) {
      88                 :           0 :         auto block_template{mining->createNewBlock({
      89                 :             :             .use_mempool = false,
      90                 :             :             .coinbase_output_script = coinbase_script_pub_key,
      91                 :           0 :         }, /*cooldown=*/false)};
      92   [ #  #  #  # ]:           0 :         CBlock block{Assert(block_template)->getBlock()};
      93                 :             : 
      94                 :             :         // The template is built on the active tip, so repoint it at pindex and
      95                 :             :         // redo the fields that depend on the predecessor.
      96                 :           0 :         block.hashPrevBlock = pindex->GetBlockHash();
      97                 :           0 :         block.nTime = pindex->nTime + 1;
      98                 :           0 :         {
      99   [ #  #  #  # ]:           0 :             CMutableTransaction tx_coinbase{*block.vtx.at(0)};
     100                 :           0 :             tx_coinbase.nLockTime = static_cast<uint32_t>(pindex->nHeight);
     101   [ #  #  #  # ]:           0 :             tx_coinbase.vin.at(0).scriptSig = CScript{} << pindex->nHeight + 1;
     102   [ #  #  #  #  :           0 :             block.vtx.at(0) = MakeTransactionRef(std::move(tx_coinbase));
                   #  # ]
     103         [ #  # ]:           0 :             block.hashMerkleRoot = BlockMerkleRoot(block);
     104                 :           0 :         }
     105                 :             : 
     106   [ #  #  #  #  :           0 :         while (!CheckProofOfWork(block.GetHash(), block.nBits, consensus)) ++block.nNonce;
                   #  # ]
     107                 :             : 
     108   [ #  #  #  # ]:           0 :         chain_block = std::make_shared<CBlock>(std::move(block));
     109                 :             : 
     110         [ #  # ]:           0 :         BlockValidationState state;
     111   [ #  #  #  #  :           0 :         if (!Assert(node.chainman)->ProcessNewBlockHeaders({{*chain_block}}, true, state, &pindex)) {
                   #  # ]
     112                 :           0 :             return false;
     113                 :             :         }
     114                 :           0 :     }
     115                 :             : 
     116                 :             :     return true;
     117         [ #  # ]:           0 : }
     118                 :             : 
     119                 :      247601 : COutPoint MineBlock(const NodeContext& node, const node::BlockCreateOptions& assembler_options)
     120                 :             : {
     121                 :      247601 :     auto block = PrepareBlock(node, assembler_options);
     122         [ +  - ]:      247601 :     auto valid = MineBlock(node, block);
     123         [ -  + ]:      247601 :     assert(!valid.IsNull());
     124         [ +  - ]:      247601 :     return valid;
     125                 :      247601 : }
     126                 :             : 
     127                 :             : struct BlockValidationStateCatcher : public CValidationInterface {
     128                 :             :     const uint256 m_hash;
     129                 :             :     std::optional<BlockValidationState> m_state;
     130                 :             : 
     131                 :      374293 :     BlockValidationStateCatcher(const uint256& hash)
     132                 :      374293 :         : m_hash{hash},
     133                 :      374293 :           m_state{} {}
     134                 :             : 
     135                 :             : protected:
     136                 :      374293 :     void BlockChecked(const std::shared_ptr<const CBlock>& block, const BlockValidationState& state) override
     137                 :             :     {
     138         [ +  - ]:      374293 :         if (block->GetHash() != m_hash) return;
     139                 :      374293 :         m_state = state;
     140                 :             :     }
     141                 :             : };
     142                 :             : 
     143                 :      373893 : COutPoint MineBlock(const NodeContext& node, std::shared_ptr<CBlock>& block)
     144                 :             : {
     145         [ +  + ]:      702588 :     while (!CheckProofOfWork(block->GetHash(), block->nBits, Params().GetConsensus())) {
     146         [ -  + ]:      328695 :         ++block->nNonce;
     147         [ -  + ]:      328695 :         assert(block->nNonce);
     148                 :             :     }
     149                 :             : 
     150                 :      373893 :     return ProcessBlock(node, block);
     151                 :             : }
     152                 :             : 
     153                 :      374293 : COutPoint ProcessBlock(const NodeContext& node, const std::shared_ptr<CBlock>& block)
     154                 :             : {
     155         [ -  + ]:      374293 :     auto& chainman{*Assert(node.chainman)};
     156   [ +  -  +  - ]:     1122879 :     const auto old_height = WITH_LOCK(chainman.GetMutex(), return chainman.ActiveHeight());
     157                 :      374293 :     bool new_block;
     158         [ +  - ]:      374293 :     BlockValidationStateCatcher bvsc{block->GetHash()};
     159         [ +  - ]:      374293 :     node.validation_signals->RegisterValidationInterface(&bvsc);
     160   [ +  -  +  -  :      748586 :     const bool processed{chainman.ProcessNewBlock(block, true, true, &new_block)};
                   +  - ]
     161   [ +  +  -  + ]:      374293 :     const bool duplicate{!new_block && processed};
     162                 :           0 :     assert(!duplicate);
     163         [ +  - ]:      374293 :     node.validation_signals->UnregisterValidationInterface(&bvsc);
     164         [ +  - ]:      374293 :     node.validation_signals->SyncWithValidationInterfaceQueue();
     165   [ +  -  +  + ]:      374293 :     const bool was_valid{bvsc.m_state && bvsc.m_state->IsValid()};
     166   [ +  -  -  +  :     1122879 :     assert(old_height + was_valid == WITH_LOCK(chainman.GetMutex(), return chainman.ActiveHeight()));
             +  -  +  - ]
     167                 :             : 
     168         [ +  + ]:      374293 :     if (was_valid) return {block->vtx[0]->GetHash(), 0};
     169                 :       31860 :     return {};
     170                 :      374293 : }
     171                 :             : 
     172                 :      376645 : std::shared_ptr<CBlock> PrepareBlock(const NodeContext& node,
     173                 :             :                                      const node::BlockCreateOptions& assembler_options)
     174                 :             : {
     175                 :      376645 :     auto mining = interfaces::MakeMining(node);
     176         [ +  - ]:      376645 :     auto block_template = mining->createNewBlock(assembler_options, /*cooldown=*/false);
     177   [ -  +  +  - ]:      753290 :     auto block = std::make_shared<CBlock>(Assert(block_template)->getBlock());
     178                 :             : 
     179         [ +  - ]:      376645 :     LOCK(cs_main);
     180   [ -  +  +  -  :      753290 :     block->nTime = Assert(node.chainman)->ActiveChain().Tip()->GetMedianTimePast() + 1;
             -  +  +  - ]
     181         [ +  - ]:      376645 :     block->hashMerkleRoot = BlockMerkleRoot(*block);
     182                 :             : 
     183         [ +  - ]:      753290 :     return block;
     184                 :      376645 : }
        

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