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// { dg-options "-std=gnu++0x" }

// 2010-02-10  Paolo Carlini  <paolo.carlini@oracle.com> 

//

// Copyright (C) 2010 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/>.

#include <unordered_map>

#include <string>

#include <testsuite_hooks.h>

namespace

{

  std::size_t

  get_nb_bucket_elems(const std::unordered_multimap<std::string, int>& us)

  {

    std::size_t nb = 0;

    for (std::size_t b = 0; b != us.bucket_count(); ++b)

      nb += us.bucket_size(b);

    return nb;

  }

}

void test01()

{

  bool test __attribute__((unused)) = true;

  typedef std::unordered_multimap<std::string, int> Mmap;

  typedef Mmap::iterator       iterator;

  typedef Mmap::const_iterator const_iterator;

  typedef Mmap::value_type     value_type;

  Mmap mm1;

  mm1.insert(value_type("because to why", 1));

  mm1.insert(value_type("the stockholm syndrome", 2));

  mm1.insert(value_type("a cereous night", 3));

  mm1.insert(value_type("eeilo", 4));

  mm1.insert(value_type("protean", 5));

  mm1.insert(value_type("the way you are when", 6));

  mm1.insert(value_type("tillsammans", 7));

  mm1.insert(value_type("umbra/penumbra", 8));

  mm1.insert(value_type("belonging (no longer mix)", 9));

  mm1.insert(value_type("one line behind", 10));

  mm1.insert(value_type("because to why", 11));

  VERIFY( mm1.size() == 11 );

  VERIFY( get_nb_bucket_elems(mm1) == mm1.size() );

  VERIFY( distance(mm1.begin(), mm1.end()) == mm1.size() );

  VERIFY( mm1.erase("eeilo") == 1 );

  VERIFY( mm1.size() == 10 );

  VERIFY( get_nb_bucket_elems(mm1) == mm1.size() );

  VERIFY( distance(mm1.begin(), mm1.end()) == mm1.size() );

  iterator it1 = mm1.find("eeilo");

  VERIFY( it1 == mm1.end() );

  VERIFY( mm1.erase("tillsammans") == 1 );

  VERIFY( mm1.size() == 9 );

  VERIFY( get_nb_bucket_elems(mm1) == mm1.size() );

  VERIFY( distance(mm1.begin(), mm1.end()) == mm1.size() );

  iterator it2 = mm1.find("tillsammans");

  VERIFY( it2 == mm1.end() );

  // Must work (see DR 526)

  iterator it3 = mm1.find("belonging (no longer mix)");

  VERIFY( it3 != mm1.end() );

  VERIFY( mm1.erase(it3->first) == 1 );

  VERIFY( mm1.size() == 8 );

  VERIFY( get_nb_bucket_elems(mm1) == mm1.size() );

  VERIFY( distance(mm1.begin(), mm1.end()) == mm1.size() );

  it3 = mm1.find("belonging (no longer mix)");

  VERIFY( it3 == mm1.end() );

  VERIFY( !mm1.erase("abra") );

  VERIFY( mm1.size() == 8 );

  VERIFY( get_nb_bucket_elems(mm1) == mm1.size() );

  VERIFY( distance(mm1.begin(), mm1.end()) == mm1.size() );

  VERIFY( !mm1.erase("eeilo") );

  VERIFY( mm1.size() == 8 );

  VERIFY( mm1.erase("because to why") == 2 );

  VERIFY( mm1.size() == 6 );

  VERIFY( get_nb_bucket_elems(mm1) == mm1.size() );

  VERIFY( distance(mm1.begin(), mm1.end()) == mm1.size() );

  iterator it4 = mm1.find("because to why");

  VERIFY( it4 == mm1.end() );

  iterator it5 = mm1.find("umbra/penumbra");

  iterator it6 = mm1.find("one line behind");

  VERIFY( it5 != mm1.end() );

  VERIFY( it6 != mm1.end() );

  VERIFY( mm1.find("the stockholm syndrome") != mm1.end() );

  VERIFY( mm1.find("a cereous night") != mm1.end() );

  VERIFY( mm1.find("the way you are when") != mm1.end() );

  VERIFY( mm1.find("a cereous night") != mm1.end() );

  VERIFY( mm1.erase(it5->first) == 1 );

  VERIFY( mm1.size() == 5 );

  VERIFY( get_nb_bucket_elems(mm1) == mm1.size() );

  VERIFY( distance(mm1.begin(), mm1.end()) == mm1.size() );

  it5 = mm1.find("umbra/penumbra");

  VERIFY( it5 == mm1.end() );

  VERIFY( mm1.erase(it6->first) == 1 );

  VERIFY( mm1.size() == 4 );

  VERIFY( get_nb_bucket_elems(mm1) == mm1.size() );

  VERIFY( distance(mm1.begin(), mm1.end()) == mm1.size() );

  it6 = mm1.find("one line behind");

  VERIFY( it6 == mm1.end() );

  iterator it7 = mm1.begin();

  iterator it8 = it7;

  ++it8;

  iterator it9 = it8;

  ++it9;

  VERIFY( mm1.erase(it8->first) == 1 );

  VERIFY( mm1.size() == 3 );

  VERIFY( get_nb_bucket_elems(mm1) == mm1.size() );

  VERIFY( distance(mm1.begin(), mm1.end()) == mm1.size() );

  VERIFY( ++it7 == it9 );

  iterator it10 = it9;

  ++it10;

  iterator it11 = it10;

  VERIFY( mm1.erase(it9->first) == 1 );

  VERIFY( get_nb_bucket_elems(mm1) == mm1.size() );

  VERIFY( distance(mm1.begin(), mm1.end()) == mm1.size() );

  VERIFY( mm1.size() == 2 );

  VERIFY( ++it10 == mm1.end() );

  VERIFY( mm1.erase(mm1.begin()) != mm1.end() );

  VERIFY( mm1.size() == 1 );

  VERIFY( get_nb_bucket_elems(mm1) == mm1.size() );

  VERIFY( distance(mm1.begin(), mm1.end()) == mm1.size() );

  VERIFY( mm1.begin() == it11 );

  VERIFY( mm1.erase(mm1.begin()->first) == 1 );

  VERIFY( mm1.size() == 0 );

  VERIFY( get_nb_bucket_elems(mm1) == mm1.size() );

  VERIFY( distance(mm1.begin(), mm1.end()) == mm1.size() );

  VERIFY( mm1.begin() == mm1.end() );

}

int main()

{

  test01();

  return 0;

}