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