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rippled/src/test/basics/Units_test.cpp
Alex Kremer 5b6e8b6f93 refactor: Rename static constants (#7120) 
Co-authored-by: Bart <bthomee@users.noreply.github.com>
2026-05-15 15:32:19 +00:00

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#include <xrpl/beast/unit_test/suite.h>
#include <xrpl/beast/utility/Zero.h>
#include <xrpl/json/json_value.h>
#include <xrpl/protocol/SystemParameters.h>
#include <xrpl/protocol/Units.h>
#include <xrpl/protocol/XRPAmount.h>
#include <cstdint>
#include <limits>
#include <type_traits>
namespace xrpl::test {
class units_test : public beast::unit_test::Suite
{
private:
void
testTypes()
{
using FeeLevel32 = FeeLevel<std::uint32_t>;
{
XRPAmount const x{100};
BEAST_EXPECT(x.drops() == 100);
BEAST_EXPECT((std::is_same_v<decltype(x)::unit_type, unit::dropTag>));
auto y = 4u * x;
BEAST_EXPECT(y.value() == 400);
BEAST_EXPECT((std::is_same_v<decltype(y)::unit_type, unit::dropTag>));
auto z = 4 * y;
BEAST_EXPECT(z.value() == 1600);
BEAST_EXPECT((std::is_same_v<decltype(z)::unit_type, unit::dropTag>));
FeeLevel32 const f{10};
FeeLevel32 const baseFee{100};
auto drops = mulDiv(baseFee, x, f);
BEAST_EXPECT(drops);
BEAST_EXPECT(drops.value() == 1000); // NOLINT(bugprone-unchecked-optional-access)
BEAST_EXPECT((std::is_same_v<
std::remove_reference_t<decltype(*drops)>::unit_type,
unit::dropTag>));
BEAST_EXPECT((std::is_same_v<std::remove_reference_t<decltype(*drops)>, XRPAmount>));
}
{
XRPAmount const x{100};
BEAST_EXPECT(x.value() == 100);
BEAST_EXPECT((std::is_same_v<decltype(x)::unit_type, unit::dropTag>));
auto y = 4u * x;
BEAST_EXPECT(y.value() == 400);
BEAST_EXPECT((std::is_same_v<decltype(y)::unit_type, unit::dropTag>));
FeeLevel64 const f{10};
FeeLevel64 const baseFee{100};
auto drops = mulDiv(baseFee, x, f);
BEAST_EXPECT(drops);
BEAST_EXPECT(drops.value() == 1000); // NOLINT(bugprone-unchecked-optional-access)
BEAST_EXPECT((std::is_same_v<
std::remove_reference_t<decltype(*drops)>::unit_type,
unit::dropTag>));
BEAST_EXPECT((std::is_same_v<std::remove_reference_t<decltype(*drops)>, XRPAmount>));
}
{
FeeLevel64 const x{1024};
BEAST_EXPECT(x.value() == 1024);
BEAST_EXPECT((std::is_same_v<decltype(x)::unit_type, unit::feelevelTag>));
std::uint64_t const m = 4;
auto y = m * x;
BEAST_EXPECT(y.value() == 4096);
BEAST_EXPECT((std::is_same_v<decltype(y)::unit_type, unit::feelevelTag>));
XRPAmount const basefee{10};
FeeLevel64 const referencefee{256};
auto drops = mulDiv(x, basefee, referencefee);
BEAST_EXPECT(drops);
BEAST_EXPECT(drops.value() == 40); // NOLINT(bugprone-unchecked-optional-access)
BEAST_EXPECT((std::is_same_v<
std::remove_reference_t<decltype(*drops)>::unit_type,
unit::dropTag>));
BEAST_EXPECT((std::is_same_v<std::remove_reference_t<decltype(*drops)>, XRPAmount>));
}
}
void
testJson()
{
// Json value functionality
using FeeLevel32 = FeeLevel<std::uint32_t>;
{
FeeLevel32 const x{std::numeric_limits<std::uint32_t>::max()};
auto y = x.jsonClipped();
BEAST_EXPECT(y.type() == json::ValueType::UInt);
BEAST_EXPECT(y == json::Value{x.fee()});
}
{
FeeLevel32 const x{std::numeric_limits<std::uint32_t>::min()};
auto y = x.jsonClipped();
BEAST_EXPECT(y.type() == json::ValueType::UInt);
BEAST_EXPECT(y == json::Value{x.fee()});
}
{
FeeLevel64 const x{std::numeric_limits<std::uint64_t>::max()};
auto y = x.jsonClipped();
BEAST_EXPECT(y.type() == json::ValueType::UInt);
BEAST_EXPECT(y == json::Value{std::numeric_limits<std::uint32_t>::max()});
}
{
FeeLevel64 const x{std::numeric_limits<std::uint64_t>::min()};
auto y = x.jsonClipped();
BEAST_EXPECT(y.type() == json::ValueType::UInt);
BEAST_EXPECT(y == json::Value{0});
}
{
FeeLevelDouble const x{std::numeric_limits<double>::max()};
auto y = x.jsonClipped();
BEAST_EXPECT(y.type() == json::ValueType::Real);
BEAST_EXPECT(y == json::Value{std::numeric_limits<double>::max()});
}
{
FeeLevelDouble const x{std::numeric_limits<double>::min()};
auto y = x.jsonClipped();
BEAST_EXPECT(y.type() == json::ValueType::Real);
BEAST_EXPECT(y == json::Value{std::numeric_limits<double>::min()});
}
{
XRPAmount const x{std::numeric_limits<std::int64_t>::max()};
auto y = x.jsonClipped();
BEAST_EXPECT(y.type() == json::ValueType::Int);
BEAST_EXPECT(y == json::Value{std::numeric_limits<std::int32_t>::max()});
}
{
XRPAmount const x{std::numeric_limits<std::int64_t>::min()};
auto y = x.jsonClipped();
BEAST_EXPECT(y.type() == json::ValueType::Int);
BEAST_EXPECT(y == json::Value{std::numeric_limits<std::int32_t>::min()});
}
}
void
testFunctions()
{
// Explicitly test every defined function for the ValueUnit 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}; };
[[maybe_unused]]
FeeLevel64 const defaulted{};
FeeLevel64 test{0};
BEAST_EXPECT(test.fee() == 0);
test = explicitmake(beast::kZero);
BEAST_EXPECT(test.fee() == 0);
test = beast::kZero;
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}; };
[[maybe_unused]]
FeeLevelDouble const defaulted{};
FeeLevelDouble test{0};
BEAST_EXPECT(test.fee() == 0);
test = explicitmake(beast::kZero);
BEAST_EXPECT(test.fee() == 0);
test = beast::kZero;
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(kInitialXrp.drops() == 100'000'000'000'000'000);
BEAST_EXPECT(kInitialXrp == XRPAmount{100'000'000'000'000'000});
testTypes();
testJson();
testFunctions();
}
};
BEAST_DEFINE_TESTSUITE(units, basics, xrpl);
} // namespace xrpl::test
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