histogram/test/index_mapper_test.cpp

// Copyright 2015-2017 Hans Dembinski
//
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt
// or copy at http://www.boost.org/LICENSE_1_0.txt)

#include <boost/core/lightweight_test.hpp>
#include <boost/core/lightweight_test_trait.hpp>
#include <boost/histogram/detail/index_mapper.hpp>
#include <vector>
#include "utility.hpp"

using namespace boost::histogram::detail;

int main() {
  // index_mapper 1
  {
    std::vector<unsigned> n{{2, 2}};
    std::vector<bool> b{{true, false}};
    index_mapper m(std::move(n), std::move(b));
    BOOST_TEST_EQ(m.first, 0);
    BOOST_TEST_EQ(m.second, 0);
    BOOST_TEST_EQ(m.next(), true);
    BOOST_TEST_EQ(m.first, 1);
    BOOST_TEST_EQ(m.second, 1);
    BOOST_TEST_EQ(m.next(), true);
    BOOST_TEST_EQ(m.first, 2);
    BOOST_TEST_EQ(m.second, 0);
    BOOST_TEST_EQ(m.next(), true);
    BOOST_TEST_EQ(m.first, 3);
    BOOST_TEST_EQ(m.second, 1);
    BOOST_TEST_EQ(m.next(), false);
  }

  // index_mapper 2
  {
    std::vector<unsigned> n{{2, 2}};
    std::vector<bool> b{{false, true}};
    index_mapper m(std::move(n), std::move(b));
    BOOST_TEST_EQ(m.first, 0);
    BOOST_TEST_EQ(m.second, 0);
    BOOST_TEST_EQ(m.next(), true);
    BOOST_TEST_EQ(m.first, 1);
    BOOST_TEST_EQ(m.second, 0);
    BOOST_TEST_EQ(m.next(), true);
    BOOST_TEST_EQ(m.first, 2);
    BOOST_TEST_EQ(m.second, 1);
    BOOST_TEST_EQ(m.next(), true);
    BOOST_TEST_EQ(m.first, 3);
    BOOST_TEST_EQ(m.second, 1);
    BOOST_TEST_EQ(m.next(), false);
  }

  return boost::report_errors();
}