libstdc++-v3/testsuite/23_containers/unordered_map/insert/array_syntax.cc

// { dg-do run { target c++11 } }

// Copyright (C) 2010-2023 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library.  This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3.  If not see
// <http://www.gnu.org/licenses/>.

// Array version of insert

#include <string>
#include <iterator>
#include <unordered_map>
#include <testsuite_hooks.h>

void test01()
{
  typedef std::unordered_map<std::string, int> Map;

  Map m;
  VERIFY( m.empty() );

  m["red"] = 17;
  VERIFY( m.size() == 1 );
  VERIFY( m.begin()->first == "red" );
  VERIFY( m.begin()->second == 17 );
  VERIFY( m["red"] == 17 );

  m["blue"] = 9;
  VERIFY( m.size() == 2 );
  VERIFY( m["blue"] == 9 );

  m["red"] = 5;
  VERIFY( m.size() == 2 );
  VERIFY( m["red"] == 5 );
  VERIFY( m["blue"] == 9 );
}

int main()
{
  test01();
  return 0;
}