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				// Copyright (c) 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 <amount.h>
				#include <feerate.h>
				#include <policy/fees.h>

				#include <test/util/setup_common.h>

				#include <boost/test/unit_test.hpp>

				BOOST_FIXTURE_TEST_SUITE(policy_fee_tests, BasicTestingSetup)

				BOOST_AUTO_TEST_CASE(FeeRounder) {
				FeeFilterRounder fee_rounder{CFeeRate{1000 * SATOSHI}};

				// check that 1000 rounds to 974 or 1071
				std::set<Amount> results;
				while (results.size() < 2) {
				results.emplace(fee_rounder.round(1000 * SATOSHI));
				}
				BOOST_CHECK_EQUAL(results.begin(), 974 SATOSHI);
				BOOST_CHECK_EQUAL(++results.begin(), 1071 SATOSHI);

				// check that negative amounts rounds to 0
				BOOST_CHECK_EQUAL(fee_rounder.round(-0 * SATOSHI), Amount::zero());
				BOOST_CHECK_EQUAL(fee_rounder.round(-1 * SATOSHI), Amount::zero());

				// check that MAX_MONEY rounds to 9170997
				BOOST_CHECK_EQUAL(fee_rounder.round(MAX_MONEY), 9170997 * SATOSHI);
				}

				BOOST_AUTO_TEST_SUITE_END()