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algo: Added tests for mutable functor

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This commit is contained in:
Kohei Takahashi
2018-07-03 00:48:40 +09:00
parent 0e4c5127f5
commit c1fe4e78ab
6 changed files with 122 additions and 25 deletions
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13
test/algorithm/count_if.cpp
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@ -1,11 +1,12 @@
/*=============================================================================
Copyright (c) 2001-2011 Joel de Guzman
Copyright (c) 2005 Eric Niebler
Copyright (c) 2018 Kohei Takahashi
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/detail/lightweight_test.hpp>
#include <boost/core/lightweight_test.hpp>
#include <boost/fusion/container/vector/vector.hpp>
#include <boost/fusion/adapted/mpl.hpp>
#include <boost/fusion/algorithm/query/count_if.hpp>
@ -18,20 +19,29 @@ struct bind1st<F<T> > : public F<T>
{
T n;
bind1st(T n) : n(n) { }
bool operator()(T v) { return F<T>::operator()(n, v); }
bool operator()(T v) const { return F<T>::operator()(n, v); }
};
template <typename T>
struct mutable_equal_to : std::equal_to<T>
{
bool operator()(T l, T r) { return std::equal_to<T>::operator()(l, r); }
};
int
main()
{
{
boost::fusion::vector<int, short, double> t(1, 2, 3.3);
BOOST_TEST(boost::fusion::count_if(t, bind1st<std::equal_to<double> >(2)) == 1);
BOOST_TEST(boost::fusion::count_if(t, bind1st<mutable_equal_to<double> >(2)) == 1);
}
{
boost::fusion::vector<int, short, double> t(1, 2, 3.3);
BOOST_TEST(boost::fusion::count_if(t, bind1st<std::equal_to<double> >(3)) == 0);
BOOST_TEST(boost::fusion::count_if(t, bind1st<mutable_equal_to<double> >(3)) == 0);
}
{
@ -39,6 +49,7 @@ main()
// Cannot use lambda here as mpl iterators return rvalues and lambda needs lvalues
BOOST_TEST(boost::fusion::count_if(mpl_vec(), bind1st<std::greater_equal<int> >(2)) == 2);
BOOST_TEST(boost::fusion::count_if(mpl_vec(), bind1st<std::less<int> >(2)) == 1);
BOOST_TEST(boost::fusion::count_if(mpl_vec(), bind1st<mutable_equal_to<int> >(2)) == 1);
}
return boost::report_errors();