hana/test/_include/laws/product.hpp
2017-01-07 14:14:18 -08:00

47 lines
1.4 KiB
C++

// Copyright Louis Dionne 2013-2017
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
#ifndef BOOST_HANA_TEST_LAWS_PRODUCT_HPP
#define BOOST_HANA_TEST_LAWS_PRODUCT_HPP
#include <boost/hana/assert.hpp>
#include <boost/hana/concept/product.hpp>
#include <boost/hana/core/make.hpp>
#include <boost/hana/core/when.hpp>
#include <boost/hana/equal.hpp>
#include <boost/hana/first.hpp>
#include <boost/hana/second.hpp>
#include <laws/base.hpp>
namespace boost { namespace hana { namespace test {
template <typename P, typename = when<true>>
struct TestProduct : TestProduct<P, laws> {
using TestProduct<P, laws>::TestProduct;
};
template <typename P>
struct TestProduct<P, laws> {
template <typename Elements>
TestProduct(Elements elements) {
foreach2(elements, [](auto x, auto y) {
static_assert(Product<decltype(hana::make<P>(x, y))>{}, "");
BOOST_HANA_CHECK(hana::equal(
hana::first(hana::make<P>(x, y)),
x
));
BOOST_HANA_CHECK(hana::equal(
hana::second(hana::make<P>(x, y)),
y
));
});
}
};
}}} // end namespace boost::hana::test
#endif // !BOOST_HANA_TEST_LAWS_PRODUCT_HPP