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// 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)
#include <boost/hana/assert.hpp>
#include <boost/hana/concept/struct.hpp>
#include <boost/hana/equal.hpp>
#include <boost/hana/integral_constant.hpp>
#include <boost/hana/keys.hpp>
#include "minimal_struct.hpp"
#include <laws/base.hpp>
#include <support/seq.hpp>
namespace hana = boost::hana;
using hana::test::ct_eq;
template <int i = 0>
struct undefined { };
int main() {
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::keys(obj()),
::seq()
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::keys(obj(undefined<0>{})),
::seq(hana::int_c<0>)
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::keys(obj(undefined<0>{}, undefined<1>{})),
::seq(hana::int_c<0>, hana::int_c<1>)
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::keys(obj(undefined<0>{}, undefined<1>{}, undefined<2>{})),
::seq(hana::int_c<0>, hana::int_c<1>, hana::int_c<2>)
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::keys(obj(undefined<0>{}, undefined<1>{}, undefined<2>{}, undefined<3>{})),
::seq(hana::int_c<0>, hana::int_c<1>, hana::int_c<2>, hana::int_c<3>)
));
}
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