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-BEGIN VERIFY SCRIPT-
s() { contrib/devtools/copyright_header.py insert "$1"; }
s build_msvc/bitcoin_config.h
s build_msvc/msvc-autogen.py
s build_msvc/testconsensus/testconsensus.cpp
s contrib/devtools/circular-dependencies.py
s contrib/devtools/gen-manpages.sh
s contrib/filter-lcov.py
s contrib/gitian-build.py
s contrib/install_db4.sh
s src/crypto/sha256_avx2.cpp
s src/crypto/sha256_sse41.cpp
s src/fs.cpp
s src/qt/test/addressbooktests.cpp
s src/qt/test/addressbooktests.h
s src/qt/test/util.cpp
s src/qt/test/util.h
s src/qt/test/wallettests.cpp
s src/qt/test/wallettests.h
s src/test/blockchain_tests.cpp
s test/functional/combine_logs.py
s test/lint/lint-locale-dependence.sh
sed -i '1G' test/lint/lint-shebang.sh
s test/lint/lint-shebang.sh
-END VERIFY SCRIPT-
76 lines
2.1 KiB
C++
76 lines
2.1 KiB
C++
// Copyright (c) 2017-2019 The Bitcoin Core developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#include <boost/test/unit_test.hpp>
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#include <stdlib.h>
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#include <chain.h>
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#include <rpc/blockchain.h>
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#include <test/util/setup_common.h>
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/* Equality between doubles is imprecise. Comparison should be done
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* with a small threshold of tolerance, rather than exact equality.
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*/
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static bool DoubleEquals(double a, double b, double epsilon)
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{
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return std::abs(a - b) < epsilon;
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}
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static CBlockIndex* CreateBlockIndexWithNbits(uint32_t nbits)
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{
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CBlockIndex* block_index = new CBlockIndex();
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block_index->nHeight = 46367;
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block_index->nTime = 1269211443;
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block_index->nBits = nbits;
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return block_index;
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}
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static void RejectDifficultyMismatch(double difficulty, double expected_difficulty) {
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BOOST_CHECK_MESSAGE(
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DoubleEquals(difficulty, expected_difficulty, 0.00001),
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"Difficulty was " + std::to_string(difficulty)
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+ " but was expected to be " + std::to_string(expected_difficulty));
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}
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/* Given a BlockIndex with the provided nbits,
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* verify that the expected difficulty results.
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*/
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static void TestDifficulty(uint32_t nbits, double expected_difficulty)
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{
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CBlockIndex* block_index = CreateBlockIndexWithNbits(nbits);
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double difficulty = GetDifficulty(block_index);
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delete block_index;
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RejectDifficultyMismatch(difficulty, expected_difficulty);
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}
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BOOST_FIXTURE_TEST_SUITE(blockchain_tests, BasicTestingSetup)
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BOOST_AUTO_TEST_CASE(get_difficulty_for_very_low_target)
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{
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TestDifficulty(0x1f111111, 0.000001);
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}
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BOOST_AUTO_TEST_CASE(get_difficulty_for_low_target)
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{
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TestDifficulty(0x1ef88f6f, 0.000016);
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}
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BOOST_AUTO_TEST_CASE(get_difficulty_for_mid_target)
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{
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TestDifficulty(0x1df88f6f, 0.004023);
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}
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BOOST_AUTO_TEST_CASE(get_difficulty_for_high_target)
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{
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TestDifficulty(0x1cf88f6f, 1.029916);
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}
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BOOST_AUTO_TEST_CASE(get_difficulty_for_very_high_target)
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{
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TestDifficulty(0x12345678, 5913134931067755359633408.0);
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}
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BOOST_AUTO_TEST_SUITE_END()
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