test/std/containers/sequences/deque/deque.cons/move_assign_noexcept.pass.cpp

   1 //===----------------------------------------------------------------------===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is dual licensed under the MIT and the University of Illinois Open
   6 // Source Licenses. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 // <deque>
  11
  12 // deque& operator=(deque&& c)
  13 //     noexcept(
  14 //          allocator_type::propagate_on_container_move_assignment::value &&
  15 //          is_nothrow_move_assignable<allocator_type>::value);
  16
  17 // This tests a conforming extension
  18
  19 // UNSUPPORTED: c++98, c++03
  20
  21 #include <deque>
  22 #include <cassert>
  23
  24 #include "test_macros.h"
  25 #include "MoveOnly.h"
  26 #include "test_allocator.h"
  27
  28 template <class T>
  29 struct some_alloc
  30 {
  31     typedef T value_type;
  32     some_alloc(const some_alloc&);
  33 };
  34
  35 int main()
  36 {
  37     {
  38         typedef std::deque<MoveOnly> C;
  39         static_assert(std::is_nothrow_move_assignable<C>::value, "");
  40     }
  41     {
  42         typedef std::deque<MoveOnly, test_allocator<MoveOnly>> C;
  43         static_assert(!std::is_nothrow_move_assignable<C>::value, "");
  44     }
  45 #if defined(_LIBCPP_VERSION)
  46     {
  47         typedef std::deque<MoveOnly, other_allocator<MoveOnly>> C;
  48         static_assert(std::is_nothrow_move_assignable<C>::value, "");
  49     }
  50     {
  51         typedef std::deque<MoveOnly, some_alloc<MoveOnly>> C;
  52         static_assert(!std::is_nothrow_move_assignable<C>::value, "");
  53     }
  54 #endif // _LIBCPP_VERSION
  55 }