libcxx/test/std/containers/sequences/list/list.cons/assign_move.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
  10
  11 // <list>
  12
  13 // list& operator=(list&& c);
  14
  15 #include <list>
  16 #include <cassert>
  17 #include "test_macros.h"
  18 #include "MoveOnly.h"
  19 #include "test_allocator.h"
  20 #include "min_allocator.h"
  21
  22 int main(int, char**)
  23 {
  24     {
  25         std::list<MoveOnly, test_allocator<MoveOnly> > l(test_allocator<MoveOnly>(5));
  26         std::list<MoveOnly, test_allocator<MoveOnly> > lo(test_allocator<MoveOnly>(5));
  27         for (int i = 1; i <= 3; ++i)
  28         {
  29             l.push_back(i);
  30             lo.push_back(i);
  31         }
  32         std::list<MoveOnly, test_allocator<MoveOnly> > l2(test_allocator<MoveOnly>(5));
  33         std::list<MoveOnly, test_allocator<MoveOnly> >::iterator it = l.begin();
  34         l2 = std::move(l);
  35         assert(l2 == lo);
  36         assert(l.empty());
  37         assert(l2.get_allocator() == lo.get_allocator());
  38         assert(it == l2.begin());  // Iterators remain valid
  39     }
  40     {
  41         std::list<MoveOnly, test_allocator<MoveOnly> > l(test_allocator<MoveOnly>(5));
  42         std::list<MoveOnly, test_allocator<MoveOnly> > lo(test_allocator<MoveOnly>(5));
  43         for (int i = 1; i <= 3; ++i)
  44         {
  45             l.push_back(i);
  46             lo.push_back(i);
  47         }
  48         std::list<MoveOnly, test_allocator<MoveOnly> > l2(test_allocator<MoveOnly>(6));
  49         l2 = std::move(l);
  50         assert(l2 == lo);
  51         assert(!l.empty());
  52         assert(l2.get_allocator() == test_allocator<MoveOnly>(6));
  53     }
  54     {
  55         std::list<MoveOnly, other_allocator<MoveOnly> > l(other_allocator<MoveOnly>(5));
  56         std::list<MoveOnly, other_allocator<MoveOnly> > lo(other_allocator<MoveOnly>(5));
  57         for (int i = 1; i <= 3; ++i)
  58         {
  59             l.push_back(i);
  60             lo.push_back(i);
  61         }
  62         std::list<MoveOnly, other_allocator<MoveOnly> > l2(other_allocator<MoveOnly>(6));
  63         std::list<MoveOnly, other_allocator<MoveOnly> >::iterator it = l.begin();
  64         l2 = std::move(l);
  65         assert(l2 == lo);
  66         assert(l.empty());
  67         assert(l2.get_allocator() == lo.get_allocator());
  68         assert(it == l2.begin());  // Iterators remain valid
  69     }
  70     {
  71         std::list<MoveOnly, min_allocator<MoveOnly> > l(min_allocator<MoveOnly>{});
  72         std::list<MoveOnly, min_allocator<MoveOnly> > lo(min_allocator<MoveOnly>{});
  73         for (int i = 1; i <= 3; ++i)
  74         {
  75             l.push_back(i);
  76             lo.push_back(i);
  77         }
  78         std::list<MoveOnly, min_allocator<MoveOnly> > l2(min_allocator<MoveOnly>{});
  79         std::list<MoveOnly, min_allocator<MoveOnly> >::iterator it = l.begin();
  80         l2 = std::move(l);
  81         assert(l2 == lo);
  82         assert(l.empty());
  83         assert(l2.get_allocator() == lo.get_allocator());
  84         assert(it == l2.begin());  // Iterators remain valid
  85     }
  86
  87   return 0;
  88 }