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 explicit iterator(W value);
12
13#include <cassert>
14#include <ranges>
15#include <type_traits>
16
17#include "test_macros.h"
18#include "../types.h"
19
20constexpr bool test() {
21 {
22 using Iter = std::ranges::iterator_t<std::ranges::iota_view<int>>;
23 auto iter = Iter(42);
24 assert(*iter == 42);
25 }
26 {
27 using Iter = std::ranges::iterator_t<std::ranges::iota_view<SomeInt>>;
28 auto iter = Iter(SomeInt(42));
29 assert(*iter == SomeInt(42));
30 }
31 {
32 using Iter = std::ranges::iterator_t<std::ranges::iota_view<SomeInt>>;
33 static_assert(!std::is_convertible_v<Iter, SomeInt>);
34 static_assert( std::is_constructible_v<Iter, SomeInt>);
35 }
36
37 return true;
38}
39
40int main(int, char**) {
41 test();
42 static_assert(test());
43
44 return 0;
45}
46

source code of libcxx/test/std/ranges/range.factories/range.iota.view/iterator/ctor.value.pass.cpp