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// constexpr common_iterator(S s);
12
13#include <iterator>
14#include <cassert>
15#include <type_traits>
16
17#include "test_iterators.h"
18
19template<class It>
20constexpr bool test() {
21 using Sent = sentinel_wrapper<It>;
22 using CommonIt = std::common_iterator<It, Sent>;
23 int a[] = {1,2,3};
24 It it = It(a);
25 Sent sent = Sent(It(a+1));
26
27 CommonIt lv = CommonIt(sent);
28 assert(lv == CommonIt(sent));
29 assert(lv != CommonIt(it));
30 if (!std::is_constant_evaluated()) {
31 assert(lv == std::next(CommonIt(it)));
32 }
33
34 CommonIt rv = CommonIt(std::move(sent));
35 assert(rv == CommonIt(sent));
36 assert(rv != CommonIt(it));
37 if (!std::is_constant_evaluated()) {
38 assert(rv == std::next(CommonIt(it)));
39 }
40
41 return true;
42}
43
44int main(int, char**) {
45 test<cpp17_input_iterator<int*>>();
46 test<forward_iterator<int*>>();
47 test<bidirectional_iterator<int*>>();
48 test<random_access_iterator<int*>>();
49 test<contiguous_iterator<int*>>();
50 test<int*>();
51 test<const int*>();
52
53 static_assert(test<cpp17_input_iterator<int*>>());
54 static_assert(test<forward_iterator<int*>>());
55 static_assert(test<bidirectional_iterator<int*>>());
56 static_assert(test<random_access_iterator<int*>>());
57 static_assert(test<contiguous_iterator<int*>>());
58 static_assert(test<int*>());
59 static_assert(test<const int*>());
60
61 return 0;
62}
63

source code of libcxx/test/std/iterators/predef.iterators/iterators.common/ctor.sentinel.pass.cpp