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35 lines
875 B
C++
35 lines
875 B
C++
// Copyright Louis Dionne 2013-2016
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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/optional.hpp>
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#include <boost/hana/unpack.hpp>
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#include <laws/base.hpp>
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namespace hana = boost::hana;
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int main() {
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hana::test::ct_eq<2> x{};
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hana::test::_injection<0> f{};
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BOOST_HANA_CONSTANT_CHECK(hana::equal(
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hana::unpack(hana::nothing, f),
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f()
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));
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BOOST_HANA_CONSTANT_CHECK(hana::equal(
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hana::unpack(hana::just(x), f),
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f(x)
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));
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// Previously, there was a bug that would make this fail.
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auto non_const_nothing = hana::nothing;
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BOOST_HANA_CONSTANT_CHECK(hana::equal(
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hana::unpack(non_const_nothing, f),
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f()
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));
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}
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