libstdc++-v3/testsuite/23_containers/unordered_set/insert/set_single.cc

   1 // { dg-do run { target c++11 } }
   2
   3 // Copyright (C) 2010-2022 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 // Single-element insert
  21
  22 #include <string>
  23 #include <iterator>
  24 #include <unordered_set>
  25 #include <testsuite_hooks.h>
  26
  27 void test01()
  28 {
  29   typedef std::unordered_set<std::string> Set;
  30   Set s;
  31   VERIFY(s.empty());
  32
  33   std::pair<Set::iterator, bool> p = s.insert("abcde");
  34   VERIFY(p.second);
  35   VERIFY(s.size() == 1);
  36   VERIFY(std::distance(s.begin(), s.end()) == 1);
  37   VERIFY(p.first == s.begin());
  38   VERIFY(*p.first == "abcde");
  39 }
  40
  41 void test02()
  42 {
  43   typedef std::unordered_set<std::string> Set;
  44   Set s;
  45   VERIFY(s.empty());
  46
  47   std::pair<Set::iterator, bool> p1 = s.insert("abcde");
  48   std::pair<Set::iterator, bool> p2 = s.insert("abcde");
  49   VERIFY(p1.second);
  50   VERIFY(!p2.second);
  51   VERIFY(s.size() == 1);
  52   VERIFY(p1.first == p2.first);
  53   VERIFY(*p1.first == "abcde");
  54 }
  55
  56 int main()
  57 {
  58   test01();
  59   test02();
  60   return 0;
  61 }