src/boost/libs/hana/test/experimental/view/single/length.cpp


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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/equal.hpp>
#include <boost/hana/experimental/view.hpp>
#include <boost/hana/integral_constant.hpp>
#include <boost/hana/length.hpp>
namespace hana = boost::hana;


template <int> struct undefined { };

int main() {
    {
        auto single = hana::experimental::single_view(undefined<0>{});
        BOOST_HANA_CONSTANT_CHECK(hana::equal(
            hana::length(single),
            hana::size_c<1>
        ));
    }
}