libcxx/test/std/utilities/expected/expected.bad/ctor.error.pass.cpp

   1 //===----------------------------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 // UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
  10
  11 // explicit bad_expected_access(E e);
  12
  13 // Effects: Initializes unex with std::move(e).
  14
  15 #include <cassert>
  16 #include <concepts>
  17 #include <expected>
  18 #include <utility>
  19
  20 #include "test_macros.h"
  21 #include "MoveOnly.h"
  22
  23 // test explicit
  24 static_assert(std::convertible_to<int, int>);
  25 static_assert(!std::convertible_to<int, std::bad_expected_access<int>>);
  26
  27 int main(int, char**) {
  28   std::bad_expected_access<MoveOnly> b(MoveOnly{3});
  29   assert(b.error().get() == 3);
  30
  31   return 0;
  32 }