29 lines
788 B
C++
29 lines
788 B
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/equal.hpp>
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#include <boost/hana/flatten.hpp>
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#include <boost/hana/optional.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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BOOST_HANA_CONSTANT_CHECK(hana::equal(
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hana::flatten(hana::nothing),
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hana::nothing
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));
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BOOST_HANA_CONSTANT_CHECK(hana::equal(
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hana::flatten(hana::just(hana::nothing)),
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hana::nothing
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));
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BOOST_HANA_CONSTANT_CHECK(hana::equal(
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hana::flatten(hana::just(hana::just(ct_eq<4>{}))),
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hana::just(ct_eq<4>{})
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));
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}
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