llvm/libcxx/test/std/containers/sequences/forwardlist/forwardlist.spec/equal.pass.cpp

//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

// <forward_list>

// template <class T, class Allocator>
//     bool operator==(const forward_list<T, Allocator>& x,
//                     const forward_list<T, Allocator>& y);
//
// template <class T, class Allocator>
//     bool operator!=(const forward_list<T, Allocator>& x,
//                     const forward_list<T, Allocator>& y);

#include <forward_list>
#include <iterator>
#include <algorithm>
#include <cassert>

#include "test_macros.h"
#include "min_allocator.h"

template <class C>
void test(int N, int M)
{
    C c1;
    for (int i = 0; i < N; ++i)
        c1.push_front(i);
    C c2;
    for (int i = 0; i < M; ++i)
        c2.push_front(i);
    if (N == M)
        assert(c1 == c2);
    else
        assert(c1 != c2);
    c2 = c1;
    assert(c1 == c2);
    if (N > 0)
    {
        c2.front() = N+1;
        assert(c1 != c2);
    }
}

int main(int, char**)
{
    for (int i = 0; i < 10; ++i)
        for (int j = 0; j < 10; ++j)
            test<std::forward_list<int> >(i, j);
#if TEST_STD_VER >= 11
    for (int i = 0; i < 10; ++i)
        for (int j = 0; j < 10; ++j)
            test<std::forward_list<int, min_allocator<int>> >(i, j);
#endif

  return 0;
}