57 lines
1.5 KiB
C++
57 lines
1.5 KiB
C++
// Copyright Louis Dionne 2013-2017
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
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#include <boost/hana/assert.hpp>
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#include <boost/hana/core/to.hpp>
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#include <boost/hana/equal.hpp>
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#include <boost/hana/for_each.hpp>
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#include <boost/hana/not.hpp>
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#include <boost/hana/not_equal.hpp> // for operator !=
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#include <boost/hana/permutations.hpp>
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#include <boost/hana/set.hpp>
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#include <boost/hana/tuple.hpp>
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#include <laws/base.hpp>
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namespace hana = boost::hana;
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using hana::test::ct_eq;
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int main() {
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auto check = [](auto ...keys) {
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auto keys_set = hana::make_set(keys...);
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auto keys_tuple = hana::make_tuple(keys...);
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auto possible_arrangements = hana::permutations(keys_tuple);
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hana::for_each(possible_arrangements, [&](auto perm) {
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BOOST_HANA_CONSTANT_CHECK(hana::equal(
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hana::to_set(perm),
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keys_set
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));
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});
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BOOST_HANA_CONSTANT_CHECK(hana::not_(hana::equal(
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keys_set,
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hana::make_set(keys..., ct_eq<999>{})
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)));
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};
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check();
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check(ct_eq<0>{});
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check(ct_eq<0>{}, ct_eq<1>{});
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check(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{});
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// check operators
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BOOST_HANA_CONSTANT_CHECK(
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hana::make_set(ct_eq<0>{})
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==
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hana::make_set(ct_eq<0>{})
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);
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BOOST_HANA_CONSTANT_CHECK(
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hana::make_set(ct_eq<0>{})
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!=
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hana::make_set(ct_eq<1>{})
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);
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}
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