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// 2003-10-14  Paolo Carlini  <pcarlini@unitus.it>
 
// Copyright (C) 2003, 2004, 2005, 2009 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/>.
 
// 25.2.8 [lib.alg.unique] Unique
 
#include <list>
#include <algorithm>
#include <functional>
#include <testsuite_hooks.h>
 
const int T1[] = {1, 4, 4, 6, 1, 2, 2, 3, 1, 6, 6, 6, 5, 7, 5, 4, 4};
const int T2[] = {1, 1, 1, 2, 2, 1, 1, 7, 6, 6, 7, 8, 8, 8, 8, 9, 9};
const int N = sizeof(T1) / sizeof(int);
 
const int A1[] = {1, 4, 6, 1, 2, 3, 1, 6, 5, 7, 5, 4};
const int A2[] = {1, 4, 4, 6, 6, 6, 6, 7};
const int A3[] = {1, 1, 1};
 
const int B1[] = {1, 2, 1, 7, 6, 7, 8, 9};
const int B2[] = {1, 1, 1, 2, 2, 7, 7, 8, 8, 8, 8, 9, 9};
const int B3[] = {9, 9, 8, 8, 8, 8, 7, 6, 6, 1, 1, 1, 1, 1};
 
void test01()
{
  bool test __attribute__((unused)) = true;
  using namespace std;
 
  list<int>::iterator pos;
 
  list<int> coll(T1, T1 + N);
  pos = unique(coll.begin(), coll.end());
  VERIFY( equal(coll.begin(), pos, A1) );
 
  list<int> coll2(T2, T2 + N);
  pos = unique(coll2.begin(), coll2.end());
  VERIFY( equal(coll2.begin(), pos, B1) );
}
 
void test02()
{
  bool test __attribute__((unused)) = true;
  using namespace std;
 
  list<int>::iterator pos;
 
  list<int> coll(T1, T1 + N);
  pos = unique(coll.begin(), coll.end(), greater<int>());
  VERIFY( equal(coll.begin(), pos, A2) );
 
  list<int> coll2(T2, T2 + N);
  pos = unique(coll2.begin(), coll2.end(), greater<int>());
  VERIFY( equal(coll2.begin(), pos, B2) );
}
 
void test03()
{
  bool test __attribute__((unused)) = true;
  using namespace std;
 
  list<int>::iterator pos;
 
  list<int> coll(T1, T1 + N);
  pos = unique(coll.begin(), coll.end(), less<int>());
  VERIFY( equal(coll.begin(), pos, A3) );
 
  list<int> coll2(T2, T2 + N);
  reverse(coll2.begin(), coll2.end());
  pos = unique(coll2.begin(), coll2.end(), less<int>());
  VERIFY( equal(coll2.begin(), pos, B3) );
}
 
int main()
{
  test01();
  test02();
  test03();
  return 0;
}