41 lines
976 B
C++
41 lines
976 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/chain.hpp>
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#include <boost/hana/equal.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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auto f = [](auto x) {
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return hana::just(hana::test::_injection<0>{}(x));
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};
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BOOST_HANA_CONSTANT_CHECK(hana::equal(
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hana::chain(hana::just(ct_eq<3>{}), f),
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f(ct_eq<3>{})
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));
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BOOST_HANA_CONSTANT_CHECK(hana::equal(
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hana::chain(hana::nothing, f),
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hana::nothing
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));
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// test with operators
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BOOST_HANA_CONSTANT_CHECK(hana::equal(
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hana::just(ct_eq<3>{}) | f,
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f(ct_eq<3>{})
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));
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BOOST_HANA_CONSTANT_CHECK(hana::equal(
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hana::nothing | f,
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hana::nothing
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));
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}
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