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xahaud/src/test/basics/FeeUnits_test.cpp
Ed Hennis e4b17d1cf2 XRPFees: Fee setting and handling improvements (#4247) 
* Introduces amendment `XRPFees`
* Convert fee voting and protocol messages to use XRPAmounts
* Includes Validations, Change transactions, the "Fees" ledger object,
  and subscription messages

* Improve handling of 0 drop reference fee with TxQ. For use with networks that do not want to require fees
* Note that fee escalation logic is still in place, which may cause the
  open ledger fee to rise if the network is busy. 0 drop transactions
  will still queue, and fee escalation can be effectively disabled by
  modifying the configuration on all nodes

* Change default network reserves to match Mainnet

* Name the new SFields *Drops (not *XRP)
* Reserve SField IDs for Hooks

* Clarify comments explaining the ttFEE transaction field validation
2023-02-02 16:20:35 -08:00

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//------------------------------------------------------------------------------
/*
This file is part of rippled: https://github.com/ripple/rippled
Copyright (c) 2019 Ripple Labs Inc.
Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <ripple/basics/FeeUnits.h>
#include <ripple/beast/unit_test.h>
#include <ripple/protocol/SystemParameters.h>
#include <type_traits>
namespace ripple {
namespace test {
class feeunits_test : public beast::unit_test::suite
{
private:
void
testTypes()
{
using FeeLevel32 = FeeLevel<std::uint32_t>;
{
XRPAmount x{100};
BEAST_EXPECT(x.drops() == 100);
BEAST_EXPECT(
(std::is_same_v<decltype(x)::unit_type, feeunit::dropTag>));
auto y = 4u * x;
BEAST_EXPECT(y.value() == 400);
BEAST_EXPECT(
(std::is_same_v<decltype(y)::unit_type, feeunit::dropTag>));
auto z = 4 * y;
BEAST_EXPECT(z.value() == 1600);
BEAST_EXPECT(
(std::is_same_v<decltype(z)::unit_type, feeunit::dropTag>));
FeeLevel32 f{10};
FeeLevel32 baseFee{100};
auto drops = mulDiv(baseFee, x, f).second;
BEAST_EXPECT(drops.value() == 1000);
BEAST_EXPECT(
(std::is_same_v<decltype(drops)::unit_type, feeunit::dropTag>));
BEAST_EXPECT((std::is_same_v<decltype(drops), XRPAmount>));
}
{
XRPAmount x{100};
BEAST_EXPECT(x.value() == 100);
BEAST_EXPECT(
(std::is_same_v<decltype(x)::unit_type, feeunit::dropTag>));
auto y = 4u * x;
BEAST_EXPECT(y.value() == 400);
BEAST_EXPECT(
(std::is_same_v<decltype(y)::unit_type, feeunit::dropTag>));
FeeLevel64 f{10};
FeeLevel64 baseFee{100};
auto drops = mulDiv(baseFee, x, f).second;
BEAST_EXPECT(drops.value() == 1000);
BEAST_EXPECT(
(std::is_same_v<decltype(drops)::unit_type, feeunit::dropTag>));
BEAST_EXPECT((std::is_same_v<decltype(drops), XRPAmount>));
}
{
FeeLevel64 x{1024};
BEAST_EXPECT(x.value() == 1024);
BEAST_EXPECT(
(std::is_same_v<decltype(x)::unit_type, feeunit::feelevelTag>));
std::uint64_t m = 4;
auto y = m * x;
BEAST_EXPECT(y.value() == 4096);
BEAST_EXPECT(
(std::is_same_v<decltype(y)::unit_type, feeunit::feelevelTag>));
XRPAmount basefee{10};
FeeLevel64 referencefee{256};
auto drops = mulDiv(x, basefee, referencefee).second;
BEAST_EXPECT(drops.value() == 40);
BEAST_EXPECT(
(std::is_same_v<decltype(drops)::unit_type, feeunit::dropTag>));
BEAST_EXPECT((std::is_same_v<decltype(drops), XRPAmount>));
}
}
void
testJson()
{
// Json value functionality
using FeeLevel32 = FeeLevel<std::uint32_t>;
{
FeeLevel32 x{std::numeric_limits<std::uint32_t>::max()};
auto y = x.jsonClipped();
BEAST_EXPECT(y.type() == Json::uintValue);
BEAST_EXPECT(y == Json::Value{x.fee()});
}
{
FeeLevel32 x{std::numeric_limits<std::uint32_t>::min()};
auto y = x.jsonClipped();
BEAST_EXPECT(y.type() == Json::uintValue);
BEAST_EXPECT(y == Json::Value{x.fee()});
}
{
FeeLevel64 x{std::numeric_limits<std::uint64_t>::max()};
auto y = x.jsonClipped();
BEAST_EXPECT(y.type() == Json::uintValue);
BEAST_EXPECT(
y == Json::Value{std::numeric_limits<std::uint32_t>::max()});
}
{
FeeLevel64 x{std::numeric_limits<std::uint64_t>::min()};
auto y = x.jsonClipped();
BEAST_EXPECT(y.type() == Json::uintValue);
BEAST_EXPECT(y == Json::Value{0});
}
{
FeeLevelDouble x{std::numeric_limits<double>::max()};
auto y = x.jsonClipped();
BEAST_EXPECT(y.type() == Json::realValue);
BEAST_EXPECT(y == Json::Value{std::numeric_limits<double>::max()});
}
{
FeeLevelDouble x{std::numeric_limits<double>::min()};
auto y = x.jsonClipped();
BEAST_EXPECT(y.type() == Json::realValue);
BEAST_EXPECT(y == Json::Value{std::numeric_limits<double>::min()});
}
{
XRPAmount x{std::numeric_limits<std::int64_t>::max()};
auto y = x.jsonClipped();
BEAST_EXPECT(y.type() == Json::intValue);
BEAST_EXPECT(
y == Json::Value{std::numeric_limits<std::int32_t>::max()});
}
{
XRPAmount x{std::numeric_limits<std::int64_t>::min()};
auto y = x.jsonClipped();
BEAST_EXPECT(y.type() == Json::intValue);
BEAST_EXPECT(
y == Json::Value{std::numeric_limits<std::int32_t>::min()});
}
}
void
testFunctions()
{
// Explicitly test every defined function for the TaggedFee class
// since some of them are templated, but not used anywhere else.
using FeeLevel32 = FeeLevel<std::uint32_t>;
{
auto make = [&](auto x) -> FeeLevel64 { return x; };
auto explicitmake = [&](auto x) -> FeeLevel64 {
return FeeLevel64{x};
};
FeeLevel64 defaulted;
(void)defaulted;
FeeLevel64 test{0};
BEAST_EXPECT(test.fee() == 0);
test = explicitmake(beast::zero);
BEAST_EXPECT(test.fee() == 0);
test = beast::zero;
BEAST_EXPECT(test.fee() == 0);
test = explicitmake(100u);
BEAST_EXPECT(test.fee() == 100);
FeeLevel64 const targetSame{200u};
FeeLevel32 const targetOther{300u};
test = make(targetSame);
BEAST_EXPECT(test.fee() == 200);
BEAST_EXPECT(test == targetSame);
BEAST_EXPECT(test < FeeLevel64{1000});
BEAST_EXPECT(test > FeeLevel64{100});
test = make(targetOther);
BEAST_EXPECT(test.fee() == 300);
BEAST_EXPECT(test == targetOther);
test = std::uint64_t(200);
BEAST_EXPECT(test.fee() == 200);
test = std::uint32_t(300);
BEAST_EXPECT(test.fee() == 300);
test = targetSame;
BEAST_EXPECT(test.fee() == 200);
test = targetOther.fee();
BEAST_EXPECT(test.fee() == 300);
BEAST_EXPECT(test == targetOther);
test = targetSame * 2;
BEAST_EXPECT(test.fee() == 400);
test = 3 * targetSame;
BEAST_EXPECT(test.fee() == 600);
test = targetSame / 10;
BEAST_EXPECT(test.fee() == 20);
test += targetSame;
BEAST_EXPECT(test.fee() == 220);
test -= targetSame;
BEAST_EXPECT(test.fee() == 20);
test++;
BEAST_EXPECT(test.fee() == 21);
++test;
BEAST_EXPECT(test.fee() == 22);
test--;
BEAST_EXPECT(test.fee() == 21);
--test;
BEAST_EXPECT(test.fee() == 20);
test *= 5;
BEAST_EXPECT(test.fee() == 100);
test /= 2;
BEAST_EXPECT(test.fee() == 50);
test %= 13;
BEAST_EXPECT(test.fee() == 11);
/*
// illegal with unsigned
test = -test;
BEAST_EXPECT(test.fee() == -11);
BEAST_EXPECT(test.signum() == -1);
BEAST_EXPECT(to_string(test) == "-11");
*/
BEAST_EXPECT(test);
test = 0;
BEAST_EXPECT(!test);
BEAST_EXPECT(test.signum() == 0);
test = targetSame;
BEAST_EXPECT(test.signum() == 1);
BEAST_EXPECT(to_string(test) == "200");
}
{
auto make = [&](auto x) -> FeeLevelDouble { return x; };
auto explicitmake = [&](auto x) -> FeeLevelDouble {
return FeeLevelDouble{x};
};
FeeLevelDouble defaulted;
(void)defaulted;
FeeLevelDouble test{0};
BEAST_EXPECT(test.fee() == 0);
test = explicitmake(beast::zero);
BEAST_EXPECT(test.fee() == 0);
test = beast::zero;
BEAST_EXPECT(test.fee() == 0);
test = explicitmake(100.0);
BEAST_EXPECT(test.fee() == 100);
FeeLevelDouble const targetSame{200.0};
FeeLevel64 const targetOther{300};
test = make(targetSame);
BEAST_EXPECT(test.fee() == 200);
BEAST_EXPECT(test == targetSame);
BEAST_EXPECT(test < FeeLevelDouble{1000.0});
BEAST_EXPECT(test > FeeLevelDouble{100.0});
test = targetOther.fee();
BEAST_EXPECT(test.fee() == 300);
BEAST_EXPECT(test == targetOther);
test = 200.0;
BEAST_EXPECT(test.fee() == 200);
test = std::uint64_t(300);
BEAST_EXPECT(test.fee() == 300);
test = targetSame;
BEAST_EXPECT(test.fee() == 200);
test = targetSame * 2;
BEAST_EXPECT(test.fee() == 400);
test = 3 * targetSame;
BEAST_EXPECT(test.fee() == 600);
test = targetSame / 10;
BEAST_EXPECT(test.fee() == 20);
test += targetSame;
BEAST_EXPECT(test.fee() == 220);
test -= targetSame;
BEAST_EXPECT(test.fee() == 20);
test++;
BEAST_EXPECT(test.fee() == 21);
++test;
BEAST_EXPECT(test.fee() == 22);
test--;
BEAST_EXPECT(test.fee() == 21);
--test;
BEAST_EXPECT(test.fee() == 20);
test *= 5;
BEAST_EXPECT(test.fee() == 100);
test /= 2;
BEAST_EXPECT(test.fee() == 50);
/* illegal with floating
test %= 13;
BEAST_EXPECT(test.fee() == 11);
*/
// legal with signed
test = -test;
BEAST_EXPECT(test.fee() == -50);
BEAST_EXPECT(test.signum() == -1);
BEAST_EXPECT(to_string(test) == "-50.000000");
BEAST_EXPECT(test);
test = 0;
BEAST_EXPECT(!test);
BEAST_EXPECT(test.signum() == 0);
test = targetSame;
BEAST_EXPECT(test.signum() == 1);
BEAST_EXPECT(to_string(test) == "200.000000");
}
}
public:
void
run() override
{
BEAST_EXPECT(INITIAL_XRP.drops() == 100'000'000'000'000'000);
BEAST_EXPECT(INITIAL_XRP == XRPAmount{100'000'000'000'000'000});
testTypes();
testJson();
testFunctions();
}
};
BEAST_DEFINE_TESTSUITE(feeunits, ripple_basics, ripple);
} // namespace test
} // namespace ripple
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