libstdc++-v3/testsuite/23_containers/unordered_set/insert/83709.cc

   1 // { dg-do run { target c++11 } }
   2 //
   3 // Copyright (C) 2018-2025 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 #include <unordered_set>
  21 #include <string>
  22 #include <testsuite_hooks.h>
  23
  24 void test01()
  25 {
  26   std::unordered_set<std::string> s { "E", "T" };
  27
  28   VERIFY( s.size() == 2 );
  29
  30   auto bcount = s.bucket_count();
  31
  32   s.insert({"E", "T" });
  33
  34   VERIFY( s.size() == 2 );
  35   VERIFY( s.bucket_count() == bcount );
  36 }
  37
  38 int main()
  39 {
  40   test01();
  41   return 0;
  42 }