libstdc++-v3/testsuite/23_containers/unordered_map/allocator/move_assign.cc

   1 // Copyright (C) 2013-2019 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 // { dg-do run { target c++11 } }
  19
  20 #include <unordered_map>
  21 #include <testsuite_hooks.h>
  22 #include <testsuite_allocator.h>
  23 #include <testsuite_counter_type.h>
  24
  25 using __gnu_test::propagating_allocator;
  26 using __gnu_test::counter_type;
  27
  28 void test01()
  29 {
  30   typedef std::pair<const counter_type, counter_type> value_type;
  31   typedef propagating_allocator<value_type, false> alloc_type;
  32   typedef __gnu_test::counter_type_hasher hash;
  33   typedef std::unordered_map<counter_type, counter_type, hash,
  34                              std::equal_to<counter_type>,
  35                              alloc_type> test_type;
  36
  37   test_type v1(alloc_type(1));
  38   v1.emplace(std::piecewise_construct,
  39              std::make_tuple(1), std::make_tuple(1));
  40
  41   test_type v2(alloc_type(2));
  42   v2.emplace(std::piecewise_construct,
  43              std::make_tuple(2), std::make_tuple(2));
  44
  45   counter_type::reset();
  46
  47   v2 = std::move(v1);
  48
  49   VERIFY( 1 == v1.get_allocator().get_personality() );
  50   VERIFY( 2 == v2.get_allocator().get_personality() );
  51
  52   // No move because key is const.
  53   VERIFY( counter_type::move_assign_count == 0  );
  54 }
  55
  56 void test02()
  57 {
  58   typedef std::pair<const counter_type, counter_type> value_type;
  59   typedef propagating_allocator<value_type, true> alloc_type;
  60   typedef __gnu_test::counter_type_hasher hash;
  61   typedef std::unordered_map<counter_type, counter_type, hash,
  62                              std::equal_to<counter_type>,
  63                              alloc_type> test_type;
  64
  65   test_type v1(alloc_type(1));
  66   v1.emplace(std::piecewise_construct,
  67              std::make_tuple(1), std::make_tuple(1));
  68
  69   auto it = v1.begin();
  70
  71   test_type v2(alloc_type(2));
  72   v2.emplace(std::piecewise_construct,
  73              std::make_tuple(2), std::make_tuple(2));
  74
  75   counter_type::reset();
  76
  77   v2 = std::move(v1);
  78
  79   VERIFY(0 == v1.get_allocator().get_personality());
  80   VERIFY(1 == v2.get_allocator().get_personality());
  81
  82   VERIFY( counter_type::move_assign_count == 0 );
  83   VERIFY( counter_type::destructor_count == 2 );
  84
  85   VERIFY( it == v2.begin() );
  86 }
  87
  88 int main()
  89 {
  90   test01();
  91   test02();
  92   return 0;
  93 }