text: // Copyright (C) 2006-2017 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]
  
  #include <algorithm>
  #include <functional>
  #include <testsuite_hooks.h>
  #include <testsuite_iterators.h>
  
  using __gnu_test::test_container;
  using __gnu_test::forward_iterator_wrapper;
  using __gnu_test::output_iterator_wrapper;
  using std::unique_copy;
  using std::equal_to;
  
  typedef test_container<int, forward_iterator_wrapper> Fcontainer;
  typedef test_container<int, output_iterator_wrapper> Ocontainer;
  
  int array1[] = {0, 0, 0, 1, 1, 1};
  int array2[2];
  
  void
  test1()
  {
    Fcontainer con1(array1, array1);
    Ocontainer con2(array2, array2);
    VERIFY( unique_copy(con1.begin(), con1.end(), con2.begin()).ptr == array2 );
  }
  
  void
  test2()
  {
    Fcontainer con1(array1, array1 + 6);
    Ocontainer con2(array2, array2 + 2);
    VERIFY( unique_copy(con1.begin(), con1.end(), con2.begin()).ptr
  	  == array2 + 2 );
    VERIFY( array2[0] == 0 && array2[1] == 1 );
  }
  
  void
  test3()
  {
    Fcontainer con1(array1, array1);
    Ocontainer con2(array2, array2);
    VERIFY( unique_copy(con1.begin(), con1.end(), con2.begin(),
  		      equal_to<int>()).ptr == array2 );
  }
  
  void
  test4()
  {
    Fcontainer con1(array1, array1 + 6);
    Ocontainer con2(array2, array2 + 2);
    VERIFY( unique_copy(con1.begin(), con1.end(), con2.begin(),
  		      equal_to<int>()).ptr == array2 + 2 );
    VERIFY( array2[0] == 0 && array2[1] == 1 );
  }
  
  int 
  main()
  {
    test1();
    test2();
    test3();
    test4();
  }
  