libstdc++-v3/testsuite/23_containers/forward_list/operations/1.cc

   1 // { dg-do run { target c++11 } }
   2
   3 // Copyright (C) 2008-2023 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 // C++11 23.3.4.6 Operations [forwardlist.ops]
  21
  22 #include <forward_list>
  23 #include <testsuite_hooks.h>
  24
  25 // This test verifies the following:
  26 //   splice_after for entire list
  27 void
  28 test01()
  29 {
  30   std::forward_list<double> a = {0.0, 1.0, 2.0, 3.0, 4.0};
  31   std::forward_list<double>::const_iterator posa = a.cbefore_begin();
  32
  33   std::forward_list<double> x = {666.0, 777.0, 888.0};
  34
  35   a.splice_after(posa, std::move(x));
  36
  37   ++posa;
  38   VERIFY(*posa == 666.0);
  39
  40   VERIFY(x.empty() == true);
  41 }
  42
  43 // This test verifies the following:
  44 //   splice_after for iterator range
  45 void
  46 test02()
  47 {
  48   std::forward_list<double> a = {0.0, 1.0, 2.0, 3.0, 4.0};
  49   std::forward_list<double>::const_iterator posa = a.cbefore_begin();
  50   ++posa;
  51   VERIFY(*posa == 0.0);
  52
  53   std::forward_list<double> y = {10.0, 11.0, 12.0, 13.0, 14.0, 15.0};
  54   std::forward_list<double>::const_iterator befy = y.cbefore_begin();
  55   ++befy;
  56   VERIFY(*befy == 10.0);
  57   std::forward_list<double>::const_iterator endy = befy;
  58   ++endy;
  59   ++endy;
  60   ++endy;
  61   ++endy;
  62   VERIFY(*endy == 14.0);
  63
  64   a.splice_after(posa, std::move(y), befy, endy);
  65   VERIFY(*posa == 0.0);
  66
  67   VERIFY(*befy == 10.0);
  68   ++befy;
  69   VERIFY(*befy == 14.0);
  70 }
  71
  72 // This test verifies the following:
  73 //   splice_after for single element
  74 void
  75 test03()
  76 {
  77   std::forward_list<double> a = {0.0, 1.0, 2.0, 3.0, 4.0};
  78   std::forward_list<double>::const_iterator posa = a.cbefore_begin();
  79   ++posa;
  80   ++posa;
  81   VERIFY(*posa == 1.0);
  82
  83   std::forward_list<double> z = {42.0, 43.0, 44.0};
  84   std::forward_list<double>::const_iterator posz = z.begin();
  85   VERIFY(*posz == 42.0);
  86
  87   a.splice_after(posa, std::move(z), posz);
  88   VERIFY(*posa == 1.0);
  89   ++posa;
  90   VERIFY(*posa == 43.0);
  91
  92   VERIFY(*posz == 42.0);
  93   ++posz;
  94   VERIFY(*posz == 44.0);
  95 }
  96
  97 int
  98 main()
  99 {
 100   test01();
 101   test02();
 102   test03();
 103   return 0;
 104 }