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fa5989d514
All functions assume that the pointer is never null, so pass by reference, to avoid accidental segfaults at runtime, or at least make them more obvious. Also, remove unused c-style casts in touched lines. Also, add CHECK_NONFATAL checks, to turn segfault crashes into an recoverable runtime error with debug information.
77 lines
2.1 KiB
C++
77 lines
2.1 KiB
C++
// Copyright (c) 2017-2022 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 <chain.h>
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#include <rpc/blockchain.h>
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#include <test/util/setup_common.h>
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#include <util/string.h>
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#include <cstdlib>
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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 " + ToString(difficulty)
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+ " but was expected to be " + ToString(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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