LCOV - code coverage report
Current view: top level - src/test - testnet4_miner_tests.cpp (source / functions) Coverage Total Hit
Test: test_bitcoin_coverage.info Lines: 100.0 % 24 24
Test Date: 2026-04-27 06:44:50 Functions: 100.0 % 3 3
Branches: 50.0 % 126 63

             Branch data     Line data    Source code
       1                 :             : // Copyright (c) 2025-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 <common/system.h>
       6                 :             : #include <interfaces/mining.h>
       7                 :             : #include <node/miner.h>
       8                 :             : #include <test/util/common.h>
       9                 :             : #include <test/util/setup_common.h>
      10                 :             : #include <test/util/time.h>
      11                 :             : #include <util/time.h>
      12                 :             : #include <validation.h>
      13                 :             : 
      14                 :             : #include <boost/test/unit_test.hpp>
      15                 :             : 
      16                 :             : using interfaces::BlockTemplate;
      17                 :             : using interfaces::Mining;
      18                 :             : using node::BlockAssembler;
      19                 :             : using node::BlockWaitOptions;
      20                 :             : 
      21                 :             : namespace testnet4_miner_tests {
      22                 :             : 
      23                 :           3 : struct Testnet4MinerTestingSetup : public Testnet4Setup {
      24                 :           1 :     std::unique_ptr<Mining> MakeMining()
      25                 :             :     {
      26                 :           1 :         return interfaces::MakeMining(m_node, /*wait_loaded=*/false);
      27                 :             :     }
      28                 :             : };
      29                 :             : } // namespace testnet4_miner_tests
      30                 :             : 
      31                 :             : BOOST_FIXTURE_TEST_SUITE(testnet4_miner_tests, Testnet4MinerTestingSetup)
      32                 :             : 
      33   [ +  -  +  -  :           7 : BOOST_AUTO_TEST_CASE(MiningInterface)
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                      - ]
      34                 :             : {
      35                 :           1 :     auto mining{MakeMining()};
      36   [ +  -  +  -  :           2 :     BOOST_REQUIRE(mining);
                   +  - ]
      37                 :             : 
      38         [ +  - ]:           1 :     BlockAssembler::Options options;
      39                 :           1 :     options.include_dummy_extranonce = true;
      40                 :           1 :     std::unique_ptr<BlockTemplate> block_template;
      41                 :             : 
      42                 :             :     // Set node time a few minutes past the testnet4 genesis block
      43   [ +  -  -  +  :           4 :     const auto template_time{3min + WITH_LOCK(cs_main, return m_node.chainman->ActiveChain().Tip()->Time())};
                   +  - ]
      44         [ +  - ]:           1 :     NodeClockContext clock_ctx{template_time};
      45                 :             : 
      46         [ +  - ]:           2 :     block_template = mining->createNewBlock(options, /*cooldown=*/false);
      47   [ +  -  +  -  :           2 :     BOOST_REQUIRE(block_template);
                   +  - ]
      48                 :             : 
      49                 :             :     // The template should use the mocked system time
      50   [ +  -  +  -  :           1 :     BOOST_REQUIRE_EQUAL(block_template->getBlockHeader().Time(), template_time);
                   +  - ]
      51                 :             : 
      52                 :           1 :     const BlockWaitOptions wait_options{.timeout = MillisecondsDouble{0}, .fee_threshold = 1};
      53                 :             : 
      54                 :             :     // waitNext() should return nullptr because there is no better template
      55         [ +  - ]:           1 :     auto should_be_nullptr = block_template->waitNext(wait_options);
      56   [ +  -  +  -  :           2 :     BOOST_REQUIRE(should_be_nullptr == nullptr);
                   +  - ]
      57                 :             : 
      58                 :             :     // This remains the case when exactly 20 minutes have gone by
      59         [ +  - ]:           1 :     clock_ctx += 17min;
      60         [ +  - ]:           2 :     should_be_nullptr = block_template->waitNext(wait_options);
      61   [ +  -  +  -  :           2 :     BOOST_REQUIRE(should_be_nullptr == nullptr);
                   +  - ]
      62                 :             : 
      63                 :             :     // One second later the difficulty drops and it returns a new template
      64                 :             :     // Note that we can't test the actual difficulty change, because the
      65                 :             :     // difficulty is already at 1.
      66         [ +  - ]:           1 :     clock_ctx += 1s;
      67         [ +  - ]:           2 :     block_template = block_template->waitNext(wait_options);
      68   [ +  -  +  - ]:           2 :     BOOST_REQUIRE(block_template);
      69                 :           1 : }
      70                 :             : 
      71                 :             : BOOST_AUTO_TEST_SUITE_END()
        

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