Bitcoin Core 29.99.0
P2P Digital Currency
testnet4_miner_tests.cpp
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1// Copyright (c) 2025 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 <util/time.h>
9#include <validation.h>
10
12
13#include <boost/test/unit_test.hpp>
14
19
21
23 std::unique_ptr<Mining> MakeMining()
24 {
26 }
27};
28} // namespace testnet4_miner_tests
29
30BOOST_FIXTURE_TEST_SUITE(testnet4_miner_tests, Testnet4MinerTestingSetup)
31
32BOOST_AUTO_TEST_CASE(MiningInterface)
33{
34 auto mining{MakeMining()};
35 BOOST_REQUIRE(mining);
36
37 BlockAssembler::Options options;
38 std::unique_ptr<BlockTemplate> block_template;
39
40 // Set node time a few minutes past the testnet4 genesis block
41 const int64_t genesis_time{WITH_LOCK(cs_main, return m_node.chainman->ActiveChain().Tip()->GetBlockTime())};
42 SetMockTime(genesis_time + 3 * 60);
43
44 block_template = mining->createNewBlock(options);
45 BOOST_REQUIRE(block_template);
46
47 // The template should use the mocked system time
48 BOOST_REQUIRE_EQUAL(block_template->getBlockHeader().nTime, genesis_time + 3 * 60);
49
50 const BlockWaitOptions wait_options{.timeout = MillisecondsDouble{0}, .fee_threshold = 1};
51
52 // waitNext() should return nullptr because there is no better template
53 auto should_be_nullptr = block_template->waitNext(wait_options);
54 BOOST_REQUIRE(should_be_nullptr == nullptr);
55
56 // This remains the case when exactly 20 minutes have gone by
57 {
59 SetMockTime(m_node.chainman->ActiveChain().Tip()->GetBlockTime() + 20 * 60);
60 }
61 should_be_nullptr = block_template->waitNext(wait_options);
62 BOOST_REQUIRE(should_be_nullptr == nullptr);
63
64 // One second later the difficulty drops and it returns a new template
65 // Note that we can't test the actual difficulty change, because the
66 // difficulty is already at 1.
67 {
69 SetMockTime(m_node.chainman->ActiveChain().Tip()->GetBlockTime() + 20 * 60 + 1);
70 }
71 block_template = block_template->waitNext(wait_options);
72 BOOST_REQUIRE(block_template);
73}
74
node::NodeContext m_node
Definition: bitcoin-gui.cpp:42
Block template interface.
Definition: mining.h:32
Interface giving clients (RPC, Stratum v2 Template Provider in the future) ability to create block te...
Definition: mining.h:77
Generate a new block, without valid proof-of-work.
Definition: miner.h:144
RecursiveMutex cs_main
Mutex to guard access to validation specific variables, such as reading or changing the chainstate.
Definition: cs_main.cpp:8
BOOST_FIXTURE_TEST_SUITE(cuckoocache_tests, BasicTestingSetup)
Test Suite for CuckooCache.
BOOST_AUTO_TEST_SUITE_END()
std::unique_ptr< Mining > MakeMining(node::NodeContext &node)
Return implementation of Mining interface.
node::NodeContext m_node
Definition: setup_common.h:66
Identical to TestingSetup, but chain set to testnet4.
Definition: setup_common.h:134
MillisecondsDouble timeout
How long to wait before returning nullptr instead of a new template.
Definition: types.h:72
std::unique_ptr< ChainstateManager > chainman
Definition: context.h:72
#define LOCK(cs)
Definition: sync.h:257
#define WITH_LOCK(cs, code)
Run code while locking a mutex.
Definition: sync.h:301
BOOST_AUTO_TEST_CASE(MiningInterface)
void SetMockTime(int64_t nMockTimeIn)
DEPRECATED Use SetMockTime with chrono type.
Definition: time.cpp:40
std::chrono::duration< double, std::chrono::milliseconds::period > MillisecondsDouble
Definition: time.h:87