libstdc++-v3/testsuite/20_util/pair/piecewise.cc

   1 // { dg-options "-std=gnu++0x" }
   2
   3 // 2010-04-30  Paolo Carlini  <paolo.carlini@oracle.com>
   4 //
   5 // Copyright (C) 2010-2014 Free Software Foundation, Inc.
   6 //
   7 // This file is part of the GNU ISO C++ Library.  This library is free
   8 // software; you can redistribute it and/or modify it under the
   9 // terms of the GNU General Public License as published by the
  10 // Free Software Foundation; either version 3, or (at your option)
  11 // any later version.
  12
  13 // This library is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 // GNU General Public License for more details.
  17
  18 // You should have received a copy of the GNU General Public License along
  19 // with this library; see the file COPYING3.  If not see
  20 // <http://www.gnu.org/licenses/>.
  21
  22 // Tuple
  23
  24 #include <utility>
  25 #include <tuple>
  26 #include <testsuite_hooks.h>
  27
  28 struct type_zero
  29 {
  30   type_zero() : n_(757) { }
  31
  32   type_zero(const type_zero&) = delete;
  33   type_zero(type_zero&& other) : n_(other.n_) { }
  34
  35   int get() const { return n_; }
  36
  37 private:
  38   int n_;
  39 };
  40
  41 struct type_one
  42 {
  43   type_one(int n) : n_(n) { }
  44
  45   type_one(const type_one&) = delete;
  46   type_one(type_one&& other) : n_(other.n_) { }
  47
  48   int get() const { return n_; }
  49
  50 private:
  51   int n_;
  52 };
  53
  54 struct type_two
  55 {
  56   type_two(int n1, int n2) : n1_(n1), n2_(n2) { }
  57
  58   type_two(const type_two&) = delete;
  59   type_two(type_two&& other) : n1_(other.n1_), n2_(other.n2_) { }
  60
  61   int get1() const { return n1_; }
  62   int get2() const { return n2_; }
  63
  64 private:
  65   int n1_, n2_;
  66 };
  67
  68 void test01()
  69 {
  70   bool test __attribute__((unused)) = true;
  71
  72   std::pair<type_one, type_zero> pp0(std::piecewise_construct_t(),
  73                                      std::forward_as_tuple(-3),
  74                                      std::forward_as_tuple());
  75   VERIFY( pp0.first.get() == -3 );
  76   VERIFY( pp0.second.get() == 757 );
  77
  78   std::pair<type_one, type_two> pp1(std::piecewise_construct_t(),
  79                                     std::forward_as_tuple(6),
  80                                     std::forward_as_tuple(5, 4));
  81   VERIFY( pp1.first.get() == 6 );
  82   VERIFY( pp1.second.get1() == 5 );
  83   VERIFY( pp1.second.get2() == 4 );
  84
  85   std::pair<type_two, type_two> pp2(std::piecewise_construct_t(),
  86                                     std::forward_as_tuple(2, 1),
  87                                     std::forward_as_tuple(-1, -3));
  88   VERIFY( pp2.first.get1() == 2 );
  89   VERIFY( pp2.first.get2() == 1 );
  90   VERIFY( pp2.second.get1() == -1 );
  91   VERIFY( pp2.second.get2() == -3 );
  92 }
  93
  94 int main()
  95 {
  96   test01();
  97   return 0;
  98 }