1//===----------------------------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9// UNSUPPORTED: c++03, c++11, c++14, c++17
10
11// ranges::next(it)
12
13#include <iterator>
14
15#include <cassert>
16#include <concepts>
17#include <utility>
18
19#include "test_iterators.h"
20
21template <class It>
22constexpr void check(int* first, int* expected) {
23 It it(first);
24 std::same_as<It> auto result = std::ranges::next(std::move(it));
25 assert(base(result) == expected);
26}
27
28constexpr bool test() {
29 int range[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
30
31 for (int n = 0; n != 9; ++n) {
32 check<cpp17_input_iterator<int*>>( range+n, range+n+1);
33 check<cpp20_input_iterator<int*>>( range+n, range+n+1);
34 check<forward_iterator<int*>>( range+n, range+n+1);
35 check<bidirectional_iterator<int*>>(range+n, range+n+1);
36 check<random_access_iterator<int*>>(range+n, range+n+1);
37 check<contiguous_iterator<int*>>( range+n, range+n+1);
38 check<cpp17_output_iterator<int*>>( range+n, range+n+1);
39 check<int*>( first: range+n, expected: range+n+1);
40 }
41
42 return true;
43}
44
45int main(int, char**) {
46 test();
47 static_assert(test());
48 return 0;
49}
50

source code of libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.next/iterator.pass.cpp