libstdc++-v3/testsuite/23_containers/unordered_set/allocator/copy_assign.cc

   1 // Copyright (C) 2013-2020 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_set>
  21 #include <testsuite_hooks.h>
  22 #include <testsuite_allocator.h>
  23
  24 struct T { int i; };
  25
  26 struct hash
  27 {
  28   std::size_t operator()(const T t) const noexcept
  29   { return t.i; }
  30 };
  31
  32 struct equal_to
  33 {
  34   bool operator()(const T& lhs, const T& rhs) const noexcept
  35   { return lhs.i == rhs.i; }
  36 };
  37
  38 using __gnu_test::propagating_allocator;
  39
  40 void test01()
  41 {
  42   typedef propagating_allocator<T, false> alloc_type;
  43   typedef std::unordered_set<T, hash, equal_to, alloc_type> test_type;
  44   test_type v1(alloc_type(1));
  45   v1.insert(T());
  46   test_type v2(alloc_type(2));
  47   v2.insert(T());
  48   v2 = v1;
  49   VERIFY(1 == v1.get_allocator().get_personality());
  50   VERIFY(2 == v2.get_allocator().get_personality());
  51 }
  52
  53 void test02()
  54 {
  55   typedef propagating_allocator<T, true> alloc_type;
  56   typedef std::unordered_set<T, hash, equal_to, alloc_type> test_type;
  57   test_type v1(alloc_type(1));
  58   v1.insert(T());
  59   test_type v2(alloc_type(2));
  60   v2.insert(T());
  61   v2 = v1;
  62   VERIFY(1 == v1.get_allocator().get_personality());
  63   VERIFY(1 == v2.get_allocator().get_personality());
  64 }
  65
  66 int main()
  67 {
  68   test01();
  69   test02();
  70   return 0;
  71 }