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amount_tests.cpp
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amount_tests.cpp
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// Copyright (c) 2016-2021 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 <consensus/amount.h>
#include <policy/feerate.h>
#include <limits>
#include <boost/test/unit_test.hpp>
BOOST_AUTO_TEST_SUITE(amount_tests)
BOOST_AUTO_TEST_CASE(MoneyRangeTest)
{
BOOST_CHECK_EQUAL(MoneyRange(CAmount(-1)), false);
BOOST_CHECK_EQUAL(MoneyRange(CAmount(0)), true);
BOOST_CHECK_EQUAL(MoneyRange(CAmount(1)), true);
BOOST_CHECK_EQUAL(MoneyRange(MAX_MONEY), true);
BOOST_CHECK_EQUAL(MoneyRange(MAX_MONEY + CAmount(1)), false);
}
BOOST_AUTO_TEST_CASE(GetFeeTest)
{
CFeeRate feeRate, altFeeRate;
feeRate = CFeeRate(0);
// Must always return 0
BOOST_CHECK_EQUAL(feeRate.GetFee(0), CAmount(0));
BOOST_CHECK_EQUAL(feeRate.GetFee(1e5), CAmount(0));
feeRate = CFeeRate(1000);
// Must always just return the arg
BOOST_CHECK_EQUAL(feeRate.GetFee(0), CAmount(0));
BOOST_CHECK_EQUAL(feeRate.GetFee(1), CAmount(1));
BOOST_CHECK_EQUAL(feeRate.GetFee(121), CAmount(121));
BOOST_CHECK_EQUAL(feeRate.GetFee(999), CAmount(999));
BOOST_CHECK_EQUAL(feeRate.GetFee(1e3), CAmount(1e3));
BOOST_CHECK_EQUAL(feeRate.GetFee(9e3), CAmount(9e3));
feeRate = CFeeRate(-1000);
// Must always just return -1 * arg
BOOST_CHECK_EQUAL(feeRate.GetFee(0), CAmount(0));
BOOST_CHECK_EQUAL(feeRate.GetFee(1), CAmount(-1));
BOOST_CHECK_EQUAL(feeRate.GetFee(121), CAmount(-121));
BOOST_CHECK_EQUAL(feeRate.GetFee(999), CAmount(-999));
BOOST_CHECK_EQUAL(feeRate.GetFee(1e3), CAmount(-1e3));
BOOST_CHECK_EQUAL(feeRate.GetFee(9e3), CAmount(-9e3));
feeRate = CFeeRate(123);
// Rounds up the result, if not integer
BOOST_CHECK_EQUAL(feeRate.GetFee(0), CAmount(0));
BOOST_CHECK_EQUAL(feeRate.GetFee(8), CAmount(1)); // Special case: returns 1 instead of 0
BOOST_CHECK_EQUAL(feeRate.GetFee(9), CAmount(2));
BOOST_CHECK_EQUAL(feeRate.GetFee(121), CAmount(15));
BOOST_CHECK_EQUAL(feeRate.GetFee(122), CAmount(16));
BOOST_CHECK_EQUAL(feeRate.GetFee(999), CAmount(123));
BOOST_CHECK_EQUAL(feeRate.GetFee(1e3), CAmount(123));
BOOST_CHECK_EQUAL(feeRate.GetFee(9e3), CAmount(1107));
feeRate = CFeeRate(-123);
// Truncates the result, if not integer
BOOST_CHECK_EQUAL(feeRate.GetFee(0), CAmount(0));
BOOST_CHECK_EQUAL(feeRate.GetFee(8), CAmount(-1)); // Special case: returns -1 instead of 0
BOOST_CHECK_EQUAL(feeRate.GetFee(9), CAmount(-1));
// check alternate constructor
feeRate = CFeeRate(1000);
altFeeRate = CFeeRate(feeRate);
BOOST_CHECK_EQUAL(feeRate.GetFee(100), altFeeRate.GetFee(100));
// Check full constructor
BOOST_CHECK(CFeeRate(CAmount(-1), 0) == CFeeRate(0));
BOOST_CHECK(CFeeRate(CAmount(0), 0) == CFeeRate(0));
BOOST_CHECK(CFeeRate(CAmount(1), 0) == CFeeRate(0));
// default value
BOOST_CHECK(CFeeRate(CAmount(-1), 1000) == CFeeRate(-1));
BOOST_CHECK(CFeeRate(CAmount(0), 1000) == CFeeRate(0));
BOOST_CHECK(CFeeRate(CAmount(1), 1000) == CFeeRate(1));
// lost precision (can only resolve satoshis per kB)
BOOST_CHECK(CFeeRate(CAmount(1), 1001) == CFeeRate(0));
BOOST_CHECK(CFeeRate(CAmount(2), 1001) == CFeeRate(1));
// some more integer checks
BOOST_CHECK(CFeeRate(CAmount(26), 789) == CFeeRate(32));
BOOST_CHECK(CFeeRate(CAmount(27), 789) == CFeeRate(34));
// Maximum size in bytes, should not crash
CFeeRate(MAX_MONEY, std::numeric_limits<uint32_t>::max()).GetFeePerK();
}
BOOST_AUTO_TEST_CASE(BinaryOperatorTest)
{
CFeeRate a, b;
a = CFeeRate(1);
b = CFeeRate(2);
BOOST_CHECK(a < b);
BOOST_CHECK(b > a);
BOOST_CHECK(a == a);
BOOST_CHECK(a <= b);
BOOST_CHECK(a <= a);
BOOST_CHECK(b >= a);
BOOST_CHECK(b >= b);
// a should be 0.00000002 BTC/kvB now
a += a;
BOOST_CHECK(a == b);
}
BOOST_AUTO_TEST_CASE(ToStringTest)
{
CFeeRate feeRate;
feeRate = CFeeRate(1);
BOOST_CHECK_EQUAL(feeRate.ToString(), "0.00000001 BTC/kvB");
BOOST_CHECK_EQUAL(feeRate.ToString(FeeEstimateMode::BTC_KVB), "0.00000001 BTC/kvB");
BOOST_CHECK_EQUAL(feeRate.ToString(FeeEstimateMode::SAT_VB), "0.001 sat/vB");
}
BOOST_AUTO_TEST_SUITE_END()