Inside Bitcoin
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Inside Bitcoin
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The code behind the network, with room to understand it.
Release published 2026-10-28 · Snapshot fetched 2026-11-01. Latest stable release at fetch time; development branches and Git history are excluded. Only the selected code window and visible folders load here.
1// Copyright (c) 2020-present The Bitcoin Core developers2// Distributed under the MIT software license, see the accompanying3// file COPYING or http://www.opensource.org/licenses/mit-license.php.5#include <consensus/amount.h>6#include <policy/fees/block_policy_estimator.h>8#include <boost/test/unit_test.hpp>10#include <set>12BOOST_AUTO_TEST_SUITE(feerounder_tests)14BOOST_AUTO_TEST_CASE(FeeRounder)15{16FastRandomContext rng{/*fDeterministic=*/true};17FeeFilterRounder fee_rounder{CFeeRate{1000}, rng};19// check that 1000 rounds to 974 or 107120std::set<CAmount> results;21while (results.size() < 2) {22results.emplace(fee_rounder.round(1000));23}24BOOST_CHECK_EQUAL(*results.begin(), 974);25BOOST_CHECK_EQUAL(*++results.begin(), 1071);27// check that negative amounts rounds to 028BOOST_CHECK_EQUAL(fee_rounder.round(-0), 0);29BOOST_CHECK_EQUAL(fee_rounder.round(-1), 0);31// check that MAX_MONEY rounds to 917099732BOOST_CHECK_EQUAL(fee_rounder.round(MAX_MONEY), 9170997);33}35BOOST_AUTO_TEST_SUITE_END()
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