mirror of
https://github.com/bitcoin/bitcoin.git
synced 2025-02-05 10:17:30 -05:00
fac5c37300
-BEGIN VERIFY SCRIPT- # Mark all lines with #includes sed -i --regexp-extended -e 's/(#include <.*>)/\1 /g' $(git grep -l '#include' ./src/bench/ ./src/test ./src/wallet/test/) # Sort all marked lines git diff -U0 | ./contrib/devtools/clang-format-diff.py -p1 -i -v -END VERIFY SCRIPT-
77 lines
2.1 KiB
C++
77 lines
2.1 KiB
C++
// Copyright (c) 2017-2019 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()
|