git / moonbite-core / src/test/blockchain_tests.cpp · raw

// Copyright (c) 2017-2020 The Bitcoin Core developers// Distributed under the MIT software license, see the accompanying// file COPYING or http://www.opensource.org/licenses/mit-license.php.#include <boost/test/unit_test.hpp>#include <stdlib.h>#include <chain.h>#include <rpc/blockchain.h>#include <test/util/setup_common.h>#include <util/string.h>/* Equality between doubles is imprecise. Comparison should be done * with a small threshold of tolerance, rather than exact equality. */static bool DoubleEquals(double a, double b, double epsilon){    return std::abs(a - b) < epsilon;}static CBlockIndex* CreateBlockIndexWithNbits(uint32_t nbits){    CBlockIndex* block_index = new CBlockIndex();    block_index->nHeight = 46367;    block_index->nTime = 1269211443;    block_index->nBits = nbits;    return block_index;}static void RejectDifficultyMismatch(double difficulty, double expected_difficulty) {     BOOST_CHECK_MESSAGE(        DoubleEquals(difficulty, expected_difficulty, 0.00001),        "Difficulty was " + ToString(difficulty)            + " but was expected to be " + ToString(expected_difficulty));}/* Given a BlockIndex with the provided nbits, * verify that the expected difficulty results. */static void TestDifficulty(uint32_t nbits, double expected_difficulty){    CBlockIndex* block_index = CreateBlockIndexWithNbits(nbits);    double difficulty = GetDifficulty(block_index);    delete block_index;    RejectDifficultyMismatch(difficulty, expected_difficulty);}BOOST_FIXTURE_TEST_SUITE(blockchain_tests, BasicTestingSetup)BOOST_AUTO_TEST_CASE(get_difficulty_for_very_low_target){    TestDifficulty(0x1f111111, 0.000001);}BOOST_AUTO_TEST_CASE(get_difficulty_for_low_target){    TestDifficulty(0x1ef88f6f, 0.000016);}BOOST_AUTO_TEST_CASE(get_difficulty_for_mid_target){    TestDifficulty(0x1df88f6f, 0.004023);}BOOST_AUTO_TEST_CASE(get_difficulty_for_high_target){    TestDifficulty(0x1cf88f6f, 1.029916);}BOOST_AUTO_TEST_CASE(get_difficulty_for_very_high_target){    TestDifficulty(0x12345678, 5913134931067755359633408.0);}BOOST_AUTO_TEST_SUITE_END()