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/* Copyright 2017-2021 PaGMO development team
This file is part of the PaGMO library.
The PaGMO library is free software; you can redistribute it and/or modify
it under the terms of either:
* the GNU Lesser General Public License as published by the Free
Software Foundation; either version 3 of the License, or (at your
option) any later version.
or
* the GNU General Public License as published by the Free Software
Foundation; either version 3 of the License, or (at your option) any
later version.
or both in parallel, as here.
The PaGMO library is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received copies of the GNU General Public License and the
GNU Lesser General Public License along with the PaGMO library. If not,
see https://www.gnu.org/licenses/. */
#define BOOST_TEST_MODULE rng_serialization_test
#define BOOST_TEST_DYN_LINK
#include <boost/test/unit_test.hpp>
#include <iterator>
#include <random>
#include <sstream>
#include <vector>
#include <pagmo/s11n.hpp>
static std::mt19937 rng;
static const int ntrials = 100;
BOOST_AUTO_TEST_CASE(rng_serialization_test)
{
using r_type = std::mt19937;
using ia_type = boost::archive::binary_iarchive;
using oa_type = boost::archive::binary_oarchive;
auto rng_save = [](const r_type &r) {
std::stringstream ss;
{
oa_type oarchive(ss);
oarchive << r;
}
return ss.str();
};
auto rng_load = [](const std::string &str, r_type &r) {
std::stringstream ss;
ss.str(str);
{
ia_type iarchive(ss);
iarchive >> r;
}
};
std::uniform_int_distribution<r_type::result_type> dist;
for (auto i = 0; i < ntrials; ++i) {
auto seed = dist(rng);
r_type r;
r.seed(seed);
auto str = rng_save(r);
std::vector<r_type::result_type> v1;
std::generate_n(std::back_inserter(v1), 100, r);
auto r_copy(r);
rng_load(str, r);
std::vector<r_type::result_type> v2;
std::generate_n(std::back_inserter(v2), 100, r);
BOOST_CHECK_EQUAL_COLLECTIONS(v1.begin(), v1.end(), v2.begin(), v2.end());
BOOST_CHECK(r_copy == r);
}
}
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