libcxx/test/std/algorithms/alg.nonmodifying/alg.adjacent.find/adjacent_find.pass.cpp

//===----------------------------------------------------------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

// <algorithm>

// template<ForwardIterator Iter>
//   requires EqualityComparable<Iter::value_type>
//   Iter
//   adjacent_find(Iter first, Iter last);

#include <algorithm>
#include <cassert>

#include "test_iterators.h"

int main()
{
    int ia[] = {0, 1, 2, 2, 0, 1, 2, 3};
    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
    assert(std::adjacent_find(forward_iterator<const int*>(ia),
                              forward_iterator<const int*>(ia + sa)) ==
                              forward_iterator<const int*>(ia+2));
    assert(std::adjacent_find(forward_iterator<const int*>(ia),
                              forward_iterator<const int*>(ia)) ==
                              forward_iterator<const int*>(ia));
    assert(std::adjacent_find(forward_iterator<const int*>(ia+3),
                              forward_iterator<const int*>(ia + sa)) ==
                              forward_iterator<const int*>(ia+sa));
}