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 single_view(const T& t);
12// constexpr explicit single_view(T&& t);
13
14#include <cassert>
15#include <ranges>
16#include <utility>
17
18#include "test_macros.h"
19
20struct Empty {};
21struct BigType { char buffer[64] = {10}; };
22
23constexpr bool test() {
24 {
25 BigType bt;
26 std::ranges::single_view<BigType> sv(bt);
27 assert(sv.data()->buffer[0] == 10);
28 assert(sv.size() == 1);
29 }
30 {
31 const BigType bt;
32 const std::ranges::single_view<BigType> sv(bt);
33 assert(sv.data()->buffer[0] == 10);
34 assert(sv.size() == 1);
35 }
36
37 {
38 BigType bt;
39 std::ranges::single_view<BigType> sv(std::move(bt));
40 assert(sv.data()->buffer[0] == 10);
41 assert(sv.size() == 1);
42 }
43 {
44 const BigType bt;
45 const std::ranges::single_view<BigType> sv(std::move(bt));
46 assert(sv.data()->buffer[0] == 10);
47 assert(sv.size() == 1);
48 }
49
50 return true;
51}
52
53int main(int, char**) {
54 test();
55 static_assert(test());
56
57 return 0;
58}
59

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