libcxx/test/std/containers/associative/multiset/multiset.cons/move_noexcept.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 // <set>
  10
  11 // multiset(multiset&&)
  12 //        noexcept(is_nothrow_move_constructible<allocator_type>::value &&
  13 //                 is_nothrow_move_constructible<key_compare>::value);
  14
  15 // This tests a conforming extension
  16
  17 // UNSUPPORTED: c++03
  18
  19 #include <set>
  20 #include <cassert>
  21
  22 #include "test_macros.h"
  23 #include "MoveOnly.h"
  24 #include "test_allocator.h"
  25
  26 template <class T>
  27 struct some_comp
  28 {
  29     typedef T value_type;
  30     some_comp(const some_comp&);
  31     bool operator()(const T&, const T&) const { return false; }
  32 };
  33
  34 int main(int, char**)
  35 {
  36 #if defined(_LIBCPP_VERSION)
  37     {
  38         typedef std::multiset<MoveOnly> C;
  39         static_assert(std::is_nothrow_move_constructible<C>::value, "");
  40     }
  41     {
  42         typedef std::multiset<MoveOnly, std::less<MoveOnly>, test_allocator<MoveOnly>> C;
  43         static_assert(std::is_nothrow_move_constructible<C>::value, "");
  44     }
  45     {
  46         typedef std::multiset<MoveOnly, std::less<MoveOnly>, other_allocator<MoveOnly>> C;
  47         static_assert(std::is_nothrow_move_constructible<C>::value, "");
  48     }
  49 #endif // _LIBCPP_VERSION
  50     {
  51         typedef std::multiset<MoveOnly, some_comp<MoveOnly>> C;
  52         static_assert(!std::is_nothrow_move_constructible<C>::value, "");
  53     }
  54
  55   return 0;
  56 }