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Make mp_append SFINAE-friendly; add test/mp_append_sf.cpp

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Peter Dimov
2019-01-07 07:03:05 +02:00
parent c61d99db87
commit 2bf0aa3815
4 changed files with 58 additions and 4 deletions
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32
test/mp_append_sf.cpp Normal file
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// Copyright 2019 Peter Dimov.
//
// 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/mp11/list.hpp>
#include <boost/mp11/utility.hpp>
#include <boost/core/lightweight_test_trait.hpp>
int main()
{
using boost::mp11::mp_append;
using boost::mp11::mp_valid;
using boost::mp11::mp_list;
BOOST_TEST_TRAIT_FALSE((mp_valid<mp_append, void>));
BOOST_TEST_TRAIT_FALSE((mp_valid<mp_append, void, void>));
BOOST_TEST_TRAIT_FALSE((mp_valid<mp_append, void, void, void>));
BOOST_TEST_TRAIT_FALSE((mp_valid<mp_append, void, void, void, void>));
BOOST_TEST_TRAIT_FALSE((mp_valid<mp_append, void, void, void, void, void>));
BOOST_TEST_TRAIT_FALSE((mp_valid<mp_append, mp_list<>, void>));
BOOST_TEST_TRAIT_FALSE((mp_valid<mp_append, mp_list<>, mp_list<>, void>));
BOOST_TEST_TRAIT_FALSE((mp_valid<mp_append, mp_list<>, mp_list<>, mp_list<>, void>));
BOOST_TEST_TRAIT_FALSE((mp_valid<mp_append, mp_list<>, mp_list<>, mp_list<>, mp_list<>, void>));
return boost::report_errors();
}