#include "fibonacci.h"
#include <benchmark/benchmark.h>
#include <ostream>
#include <random>

const auto seed = std::random_device()();
std::default_random_engine engine(seed);
std::uniform_int_distribution<unsigned> distribution(0, 30);
auto rng = std::bind(distribution, engine);

template<auto f> void test(benchmark::State &state)
{
    std::size_t t = 0;
    engine.seed(seed);
    for (auto _ : state)
        t += f(rng());
    std::ostream cnull(0);
    cnull << t;
}

template<class T> void register_benchmark()
{
    BENCHMARK(test<fib<T>>);
    BENCHMARK(test<fib_iter<T>>);
    BENCHMARK(test<fib_map<T>>);
    BENCHMARK(test<fib_hash<T>>);
    BENCHMARK(test<fib_hash2<T>>);
    BENCHMARK(test<fib_vector<T>>);
    BENCHMARK(test<fib_vector2<T>>);
    BENCHMARK(test<fib_array<T>>);
    BENCHMARK(test<fib_array2<T>>);
}

template<class T> struct Init
{
    Init() { register_benchmark<T>(); }
};

Init<unsigned> init;

BENCHMARK_MAIN();