libcxx/test/std/utilities/tuple/tuple.tuple/tuple.elem/get_rv.pass.cpp

//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

// <tuple>

// template <class... Types> class tuple;

// template <size_t I, class... Types>
//   typename tuple_element<I, tuple<Types...> >::type&&
//   get(tuple<Types...>&& t);

// UNSUPPORTED: c++98, c++03

#include <tuple>
#include <utility>
#include <memory>
#include <cassert>

#include "test_macros.h"

int main(int, char**)
{
    {
        typedef std::tuple<std::unique_ptr<int> > T;
        T t(std::unique_ptr<int>(new int(3)));
        std::unique_ptr<int> p = std::get<0>(std::move(t));
        assert(*p == 3);
    }

  return 0;
}