libs/hana/test/experimental/view/single/unpack.cpp

   1 // Copyright Louis Dionne 2013-2017
   2 // Distributed under the Boost Software License, Version 1.0.
   3 // (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
   4
   5 #include <boost/hana/assert.hpp>
   6 #include <boost/hana/equal.hpp>
   7 #include <boost/hana/experimental/view.hpp>
   8 #include <boost/hana/unpack.hpp>
   9
  10 #include <laws/base.hpp>
  11 namespace hana = boost::hana;
  12 using hana::test::ct_eq;
  13
  14
  15 int main() {
  16     auto f = hana::test::_injection<0>{};
  17
  18     {
  19         auto single = hana::experimental::single_view(ct_eq<0>{});
  20         BOOST_HANA_CONSTANT_CHECK(hana::equal(
  21             hana::unpack(single, f),
  22             f(ct_eq<0>{})
  23         ));
  24     }
  25 }