libstdc++-v3/testsuite/23_containers/unordered_set/operations/count.cc

   1 // { dg-do run { target c++11 } }
   2
   3 // 2011-10-28  Paolo Carlini  <paolo.carlini@oracle.com>
   4
   5 // Copyright (C) 2011-2025 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
  23 #include <unordered_set>
  24 #include <testsuite_hooks.h>
  25
  26 void test01()
  27 {
  28   using namespace std;
  29
  30   unordered_set<int> us0;
  31   VERIFY( us0.count(0) == 0 );
  32   VERIFY( us0.count(1) == 0 );
  33
  34   us0.insert(1);
  35   VERIFY( us0.count(0) == 0 );
  36   VERIFY( us0.count(1) == 1 );
  37
  38   us0.insert(1);
  39   VERIFY( us0.count(0) == 0 );
  40   VERIFY( us0.count(1) == 1 );
  41
  42   us0.insert(2);
  43   VERIFY( us0.count(2) == 1 );
  44
  45   us0.insert(3);
  46   us0.insert(3);
  47   us0.insert(3);
  48   VERIFY( us0.count(3) == 1 );
  49
  50   us0.erase(2);
  51   VERIFY( us0.count(2) == 0 );
  52
  53   us0.erase(0);
  54   VERIFY( us0.count(0) == 0 );
  55
  56   unordered_set<int> us1(us0);
  57   VERIFY( us1.count(0) == 0 );
  58   VERIFY( us1.count(1) == 1 );
  59   VERIFY( us1.count(2) == 0 );
  60   VERIFY( us1.count(3) == 1 );
  61
  62   us0.clear();
  63   VERIFY( us0.count(0) == 0 );
  64   VERIFY( us0.count(1) == 0 );
  65   VERIFY( us0.count(2) == 0 );
  66   VERIFY( us0.count(3) == 0 );
  67
  68   us1.insert(4);
  69   us1.insert(5);
  70   us1.insert(5);
  71   us1.insert(5);
  72   us1.insert(5);
  73   VERIFY( us1.count(4) == 1 );
  74   VERIFY( us1.count(5) == 1 );
  75
  76   us1.erase(1);
  77   VERIFY( us1.count(1) == 0 );
  78
  79   us1.erase(us1.find(5));
  80   VERIFY( us1.count(5) == 0 );
  81
  82   us1.insert(1);
  83   us1.insert(1);
  84   VERIFY( us1.count(1) == 1 );
  85
  86   us1.erase(5);
  87   VERIFY( us1.count(5) == 0 );
  88
  89   us1.erase(us1.find(4));
  90   VERIFY( us1.count(4) == 0 );
  91
  92   us1.clear();
  93   VERIFY( us1.count(0) == 0 );
  94   VERIFY( us1.count(1) == 0 );
  95   VERIFY( us1.count(2) == 0 );
  96   VERIFY( us1.count(3) == 0 );
  97   VERIFY( us1.count(4) == 0 );
  98   VERIFY( us1.count(5) == 0 );
  99 }
 100
 101 int main()
 102 {
 103   test01();
 104   return 0;
 105 }