mirror of
https://github.com/catchorg/Catch2.git
synced 2024-11-14 01:39:54 +01:00
47a2c96938
The basic idea was to reduce the number of things dependent on the `Clock` type. To that end, I replaced `Duration<Clock>` with `IDuration` typedef for `std::nanoseconds`, and `FloatDuration<Clock>` with `FDuration` typedef for `Duration<double, std::nano>`. We can generally assume that any clock's duration can be expressed in nanoseconds, as long as we insert `duration_cast`s into the right places. Note that we cannot remove all dependence on `Clock` as a template arguments, because functions that actually measure the elapsed time have to use the Clock. We also changed some template function arguments to pass plain function pointers, so that the actual implementation can be placed into a cpp file.
456 lines
14 KiB
C++
456 lines
14 KiB
C++
|
|
// Copyright Catch2 Authors
|
|
// Distributed under the Boost Software License, Version 1.0.
|
|
// (See accompanying file LICENSE.txt or copy at
|
|
// https://www.boost.org/LICENSE_1_0.txt)
|
|
|
|
// SPDX-License-Identifier: BSL-1.0
|
|
// Adapted from donated nonius code.
|
|
|
|
|
|
#if defined( __GNUC__ ) || defined( __clang__ )
|
|
# pragma GCC diagnostic ignored "-Wfloat-equal"
|
|
#endif
|
|
|
|
|
|
#include <catch2/catch_test_macros.hpp>
|
|
#include <catch2/catch_approx.hpp>
|
|
#include <catch2/catch_config.hpp>
|
|
#include <catch2/benchmark/catch_benchmark.hpp>
|
|
#include <catch2/benchmark/catch_chronometer.hpp>
|
|
#include <catch2/benchmark/detail/catch_analyse.hpp>
|
|
#include <catch2/benchmark/detail/catch_benchmark_function.hpp>
|
|
#include <catch2/benchmark/detail/catch_estimate_clock.hpp>
|
|
|
|
#include <numeric>
|
|
|
|
namespace {
|
|
struct manual_clock {
|
|
public:
|
|
using duration = std::chrono::nanoseconds;
|
|
using time_point = std::chrono::time_point<manual_clock, duration>;
|
|
using rep = duration::rep;
|
|
using period = duration::period;
|
|
enum { is_steady = true };
|
|
|
|
static time_point now() {
|
|
return time_point(duration(tick()));
|
|
}
|
|
|
|
static void advance(int ticks = 1) {
|
|
tick() += ticks;
|
|
}
|
|
|
|
private:
|
|
static rep& tick() {
|
|
static rep the_tick = 0;
|
|
return the_tick;
|
|
}
|
|
};
|
|
|
|
struct counting_clock {
|
|
public:
|
|
using duration = std::chrono::nanoseconds;
|
|
using time_point = std::chrono::time_point<counting_clock, duration>;
|
|
using rep = duration::rep;
|
|
using period = duration::period;
|
|
enum { is_steady = true };
|
|
|
|
static time_point now() {
|
|
static rep ticks = 0;
|
|
return time_point(duration(ticks += rate()));
|
|
}
|
|
|
|
static void set_rate(rep new_rate) { rate() = new_rate; }
|
|
|
|
private:
|
|
static rep& rate() {
|
|
static rep the_rate = 1;
|
|
return the_rate;
|
|
}
|
|
};
|
|
|
|
struct TestChronometerModel : Catch::Benchmark::Detail::ChronometerConcept {
|
|
int started = 0;
|
|
int finished = 0;
|
|
|
|
void start() override { ++started; }
|
|
void finish() override { ++finished; }
|
|
};
|
|
} // namespace
|
|
|
|
TEST_CASE("warmup", "[benchmark]") {
|
|
auto rate = 1000;
|
|
counting_clock::set_rate(rate);
|
|
|
|
auto start = counting_clock::now();
|
|
auto iterations = Catch::Benchmark::Detail::warmup<counting_clock>();
|
|
auto end = counting_clock::now();
|
|
|
|
REQUIRE((iterations * rate) > Catch::Benchmark::Detail::warmup_time.count());
|
|
REQUIRE((end - start) > Catch::Benchmark::Detail::warmup_time);
|
|
}
|
|
|
|
TEST_CASE("resolution", "[benchmark]") {
|
|
auto rate = 1000;
|
|
counting_clock::set_rate(rate);
|
|
|
|
size_t count = 10;
|
|
auto res = Catch::Benchmark::Detail::resolution<counting_clock>(static_cast<int>(count));
|
|
|
|
REQUIRE(res.size() == count);
|
|
|
|
for (size_t i = 1; i < count; ++i) {
|
|
REQUIRE(res[i] == rate);
|
|
}
|
|
}
|
|
|
|
TEST_CASE("estimate_clock_resolution", "[benchmark]") {
|
|
auto rate = 2'000;
|
|
counting_clock::set_rate(rate);
|
|
|
|
int iters = 160'000;
|
|
auto res = Catch::Benchmark::Detail::estimate_clock_resolution<counting_clock>(iters);
|
|
|
|
REQUIRE(res.mean.count() == rate);
|
|
REQUIRE(res.outliers.total() == 0);
|
|
}
|
|
|
|
TEST_CASE("benchmark function call", "[benchmark]") {
|
|
SECTION("without chronometer") {
|
|
auto called = 0;
|
|
auto model = TestChronometerModel{};
|
|
auto meter = Catch::Benchmark::Chronometer{ model, 1 };
|
|
auto fn = Catch::Benchmark::Detail::BenchmarkFunction{ [&] {
|
|
CHECK(model.started == 1);
|
|
CHECK(model.finished == 0);
|
|
++called;
|
|
} };
|
|
|
|
fn(meter);
|
|
|
|
CHECK(model.started == 1);
|
|
CHECK(model.finished == 1);
|
|
CHECK(called == 1);
|
|
}
|
|
|
|
SECTION("with chronometer") {
|
|
auto called = 0;
|
|
auto model = TestChronometerModel{};
|
|
auto meter = Catch::Benchmark::Chronometer{ model, 1 };
|
|
auto fn = Catch::Benchmark::Detail::BenchmarkFunction{ [&](Catch::Benchmark::Chronometer) {
|
|
CHECK(model.started == 0);
|
|
CHECK(model.finished == 0);
|
|
++called;
|
|
} };
|
|
|
|
fn(meter);
|
|
|
|
CHECK(model.started == 0);
|
|
CHECK(model.finished == 0);
|
|
CHECK(called == 1);
|
|
}
|
|
}
|
|
|
|
TEST_CASE("uniform samples", "[benchmark]") {
|
|
std::vector<double> samples(100);
|
|
std::fill(samples.begin(), samples.end(), 23);
|
|
|
|
auto e = Catch::Benchmark::Detail::bootstrap(
|
|
0.95,
|
|
samples.data(),
|
|
samples.data() + samples.size(),
|
|
samples,
|
|
[]( double const* a, double const* b ) {
|
|
auto sum = std::accumulate(a, b, 0.);
|
|
return sum / (b - a);
|
|
});
|
|
CHECK(e.point == 23);
|
|
CHECK(e.upper_bound == 23);
|
|
CHECK(e.lower_bound == 23);
|
|
CHECK(e.confidence_interval == 0.95);
|
|
}
|
|
|
|
|
|
TEST_CASE("normal_cdf", "[benchmark]") {
|
|
using Catch::Benchmark::Detail::normal_cdf;
|
|
using Catch::Approx;
|
|
CHECK(normal_cdf(0.000000) == Approx(0.50000000000000000));
|
|
CHECK(normal_cdf(1.000000) == Approx(0.84134474606854293));
|
|
CHECK(normal_cdf(-1.000000) == Approx(0.15865525393145705));
|
|
CHECK(normal_cdf(2.809729) == Approx(0.99752083845315409));
|
|
CHECK(normal_cdf(-1.352570) == Approx(0.08809652095066035));
|
|
}
|
|
|
|
TEST_CASE("erfc_inv", "[benchmark]") {
|
|
using Catch::Benchmark::Detail::erfc_inv;
|
|
using Catch::Approx;
|
|
CHECK(erfc_inv(1.103560) == Approx(-0.09203687623843015));
|
|
CHECK(erfc_inv(1.067400) == Approx(-0.05980291115763361));
|
|
CHECK(erfc_inv(0.050000) == Approx(1.38590382434967796));
|
|
}
|
|
|
|
TEST_CASE("normal_quantile", "[benchmark]") {
|
|
using Catch::Benchmark::Detail::normal_quantile;
|
|
using Catch::Approx;
|
|
CHECK(normal_quantile(0.551780) == Approx(0.13015979861484198));
|
|
CHECK(normal_quantile(0.533700) == Approx(0.08457408802851875));
|
|
CHECK(normal_quantile(0.025000) == Approx(-1.95996398454005449));
|
|
}
|
|
|
|
|
|
TEST_CASE("mean", "[benchmark]") {
|
|
std::vector<double> x{ 10., 20., 14., 16., 30., 24. };
|
|
|
|
auto m = Catch::Benchmark::Detail::mean(x.data(), x.data() + x.size());
|
|
|
|
REQUIRE(m == 19.);
|
|
}
|
|
|
|
TEST_CASE("weighted_average_quantile", "[benchmark]") {
|
|
std::vector<double> x{ 10., 20., 14., 16., 30., 24. };
|
|
|
|
auto q1 = Catch::Benchmark::Detail::weighted_average_quantile(1, 4, x.data(), x.data() + x.size());
|
|
auto med = Catch::Benchmark::Detail::weighted_average_quantile(1, 2, x.data(), x.data() + x.size());
|
|
auto q3 = Catch::Benchmark::Detail::weighted_average_quantile(3, 4, x.data(), x.data() + x.size());
|
|
|
|
REQUIRE(q1 == 14.5);
|
|
REQUIRE(med == 18.);
|
|
REQUIRE(q3 == 23.);
|
|
}
|
|
|
|
TEST_CASE("classify_outliers", "[benchmark]") {
|
|
auto require_outliers = [](Catch::Benchmark::OutlierClassification o, int los, int lom, int him, int his) {
|
|
REQUIRE(o.low_severe == los);
|
|
REQUIRE(o.low_mild == lom);
|
|
REQUIRE(o.high_mild == him);
|
|
REQUIRE(o.high_severe == his);
|
|
REQUIRE(o.total() == los + lom + him + his);
|
|
};
|
|
|
|
SECTION("none") {
|
|
std::vector<double> x{ 10., 20., 14., 16., 30., 24. };
|
|
|
|
auto o = Catch::Benchmark::Detail::classify_outliers(
|
|
x.data(), x.data() + x.size() );
|
|
|
|
REQUIRE(o.samples_seen == static_cast<int>(x.size()));
|
|
require_outliers(o, 0, 0, 0, 0);
|
|
}
|
|
SECTION("low severe") {
|
|
std::vector<double> x{ -12., 20., 14., 16., 30., 24. };
|
|
|
|
auto o = Catch::Benchmark::Detail::classify_outliers(
|
|
x.data(), x.data() + x.size() );
|
|
|
|
REQUIRE(o.samples_seen == static_cast<int>(x.size()));
|
|
require_outliers(o, 1, 0, 0, 0);
|
|
}
|
|
SECTION("low mild") {
|
|
std::vector<double> x{ 1., 20., 14., 16., 30., 24. };
|
|
|
|
auto o = Catch::Benchmark::Detail::classify_outliers(
|
|
x.data(), x.data() + x.size() );
|
|
|
|
REQUIRE(o.samples_seen == static_cast<int>(x.size()));
|
|
require_outliers(o, 0, 1, 0, 0);
|
|
}
|
|
SECTION("high mild") {
|
|
std::vector<double> x{ 10., 20., 14., 16., 36., 24. };
|
|
|
|
auto o = Catch::Benchmark::Detail::classify_outliers(
|
|
x.data(), x.data() + x.size() );
|
|
|
|
REQUIRE(o.samples_seen == static_cast<int>(x.size()));
|
|
require_outliers(o, 0, 0, 1, 0);
|
|
}
|
|
SECTION("high severe") {
|
|
std::vector<double> x{ 10., 20., 14., 16., 49., 24. };
|
|
|
|
auto o = Catch::Benchmark::Detail::classify_outliers(
|
|
x.data(), x.data() + x.size() );
|
|
|
|
REQUIRE(o.samples_seen == static_cast<int>(x.size()));
|
|
require_outliers(o, 0, 0, 0, 1);
|
|
}
|
|
SECTION("mixed") {
|
|
std::vector<double> x{ -20., 20., 14., 16., 39., 24. };
|
|
|
|
auto o = Catch::Benchmark::Detail::classify_outliers(
|
|
x.data(), x.data() + x.size() );
|
|
|
|
REQUIRE(o.samples_seen == static_cast<int>(x.size()));
|
|
require_outliers(o, 1, 0, 1, 0);
|
|
}
|
|
}
|
|
|
|
TEST_CASE("analyse", "[approvals][benchmark]") {
|
|
Catch::ConfigData data{};
|
|
data.benchmarkConfidenceInterval = 0.95;
|
|
data.benchmarkNoAnalysis = false;
|
|
data.benchmarkResamples = 1000;
|
|
data.benchmarkSamples = 99;
|
|
Catch::Config config{data};
|
|
|
|
using FDuration = Catch::Benchmark::FDuration;
|
|
std::vector<FDuration> samples(99);
|
|
for (size_t i = 0; i < samples.size(); ++i) {
|
|
samples[i] = FDuration(23 + (i % 3 - 1));
|
|
}
|
|
|
|
auto analysis = Catch::Benchmark::Detail::analyse(config, samples.data(), samples.data() + samples.size());
|
|
CHECK( analysis.mean.point.count() == 23 );
|
|
CHECK( analysis.mean.lower_bound.count() < 23 );
|
|
CHECK(analysis.mean.lower_bound.count() > 22);
|
|
CHECK(analysis.mean.upper_bound.count() > 23);
|
|
CHECK(analysis.mean.upper_bound.count() < 24);
|
|
|
|
CHECK(analysis.standard_deviation.point.count() > 0.5);
|
|
CHECK(analysis.standard_deviation.point.count() < 1);
|
|
CHECK(analysis.standard_deviation.lower_bound.count() > 0.5);
|
|
CHECK(analysis.standard_deviation.lower_bound.count() < 1);
|
|
CHECK(analysis.standard_deviation.upper_bound.count() > 0.5);
|
|
CHECK(analysis.standard_deviation.upper_bound.count() < 1);
|
|
|
|
CHECK(analysis.outliers.total() == 0);
|
|
CHECK(analysis.outliers.low_mild == 0);
|
|
CHECK(analysis.outliers.low_severe == 0);
|
|
CHECK(analysis.outliers.high_mild == 0);
|
|
CHECK(analysis.outliers.high_severe == 0);
|
|
CHECK(analysis.outliers.samples_seen == static_cast<int>(samples.size()));
|
|
|
|
CHECK(analysis.outlier_variance < 0.5);
|
|
CHECK(analysis.outlier_variance > 0);
|
|
}
|
|
|
|
TEST_CASE("analyse no analysis", "[benchmark]") {
|
|
Catch::ConfigData data{};
|
|
data.benchmarkConfidenceInterval = 0.95;
|
|
data.benchmarkNoAnalysis = true;
|
|
data.benchmarkResamples = 1000;
|
|
data.benchmarkSamples = 99;
|
|
Catch::Config config{ data };
|
|
|
|
using FDuration = Catch::Benchmark::FDuration;
|
|
std::vector<FDuration> samples(99);
|
|
for (size_t i = 0; i < samples.size(); ++i) {
|
|
samples[i] = FDuration(23 + (i % 3 - 1));
|
|
}
|
|
|
|
auto analysis = Catch::Benchmark::Detail::analyse(config, samples.data(), samples.data() + samples.size());
|
|
CHECK(analysis.mean.point.count() == 23);
|
|
CHECK(analysis.mean.lower_bound.count() == 23);
|
|
CHECK(analysis.mean.upper_bound.count() == 23);
|
|
|
|
CHECK(analysis.standard_deviation.point.count() == 0);
|
|
CHECK(analysis.standard_deviation.lower_bound.count() == 0);
|
|
CHECK(analysis.standard_deviation.upper_bound.count() == 0);
|
|
|
|
CHECK(analysis.outliers.total() == 0);
|
|
CHECK(analysis.outliers.low_mild == 0);
|
|
CHECK(analysis.outliers.low_severe == 0);
|
|
CHECK(analysis.outliers.high_mild == 0);
|
|
CHECK(analysis.outliers.high_severe == 0);
|
|
CHECK(analysis.outliers.samples_seen == 0);
|
|
|
|
CHECK(analysis.outlier_variance == 0);
|
|
}
|
|
|
|
TEST_CASE("run_for_at_least, int", "[benchmark]") {
|
|
manual_clock::duration time(100);
|
|
|
|
int old_x = 1;
|
|
auto Timing = Catch::Benchmark::Detail::run_for_at_least<manual_clock>(time, 1, [&old_x](int x) -> int {
|
|
CHECK(x >= old_x);
|
|
manual_clock::advance(x);
|
|
old_x = x;
|
|
return x + 17;
|
|
});
|
|
|
|
REQUIRE(Timing.elapsed >= time);
|
|
REQUIRE(Timing.result == Timing.iterations + 17);
|
|
REQUIRE(Timing.iterations >= time.count());
|
|
}
|
|
|
|
TEST_CASE("run_for_at_least, chronometer", "[benchmark]") {
|
|
manual_clock::duration time(100);
|
|
|
|
int old_runs = 1;
|
|
auto Timing = Catch::Benchmark::Detail::run_for_at_least<manual_clock>(time, 1, [&old_runs](Catch::Benchmark::Chronometer meter) -> int {
|
|
CHECK(meter.runs() >= old_runs);
|
|
manual_clock::advance(100);
|
|
meter.measure([] {
|
|
manual_clock::advance(1);
|
|
});
|
|
old_runs = meter.runs();
|
|
return meter.runs() + 17;
|
|
});
|
|
|
|
REQUIRE(Timing.elapsed >= time);
|
|
REQUIRE(Timing.result == Timing.iterations + 17);
|
|
REQUIRE(Timing.iterations >= time.count());
|
|
}
|
|
|
|
|
|
TEST_CASE("measure", "[benchmark]") {
|
|
auto r = Catch::Benchmark::Detail::measure<manual_clock>([](int x) -> int {
|
|
CHECK(x == 17);
|
|
manual_clock::advance(42);
|
|
return 23;
|
|
}, 17);
|
|
auto s = Catch::Benchmark::Detail::measure<manual_clock>([](int x) -> int {
|
|
CHECK(x == 23);
|
|
manual_clock::advance(69);
|
|
return 17;
|
|
}, 23);
|
|
|
|
CHECK(r.elapsed.count() == 42);
|
|
CHECK(r.result == 23);
|
|
CHECK(r.iterations == 1);
|
|
|
|
CHECK(s.elapsed.count() == 69);
|
|
CHECK(s.result == 17);
|
|
CHECK(s.iterations == 1);
|
|
}
|
|
|
|
TEST_CASE("run benchmark", "[benchmark][approvals]") {
|
|
counting_clock::set_rate(1000);
|
|
auto start = counting_clock::now();
|
|
|
|
Catch::Benchmark::Benchmark bench{ "Test Benchmark", [](Catch::Benchmark::Chronometer meter) {
|
|
counting_clock::set_rate(100000);
|
|
meter.measure([] { return counting_clock::now(); });
|
|
} };
|
|
|
|
bench.run<counting_clock>();
|
|
auto end = counting_clock::now();
|
|
|
|
CHECK((end - start).count() == 2867251000);
|
|
}
|
|
|
|
TEST_CASE("Failing benchmarks", "[!benchmark][.approvals]") {
|
|
SECTION("empty", "Benchmark that has been optimized away (because it is empty)") {
|
|
BENCHMARK("Empty benchmark") {};
|
|
}
|
|
SECTION("throw", "Benchmark that throws an exception") {
|
|
BENCHMARK("Throwing benchmark") {
|
|
throw "just a plain literal, bleh";
|
|
};
|
|
}
|
|
SECTION("assert", "Benchmark that asserts inside") {
|
|
BENCHMARK("Asserting benchmark") {
|
|
REQUIRE(1 == 2);
|
|
};
|
|
}
|
|
SECTION("fail", "Benchmark that fails inside") {
|
|
BENCHMARK("FAIL'd benchmark") {
|
|
FAIL("This benchmark only fails, nothing else");
|
|
};
|
|
}
|
|
}
|
|
|
|
TEST_CASE( "Failing benchmark respects should-fail",
|
|
"[!shouldfail][!benchmark][approvals]" ) {
|
|
BENCHMARK( "Asserting benchmark" ) { REQUIRE( 1 == 2 ); };
|
|
}
|