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 // UNSUPPORTED: libcpp-has-no-incomplete-ranges
11
12 // constexpr outer-iterator::value-type outer-iterator::operator*() const;
13
14 #include <ranges>
15
16 #include <algorithm>
17 #include <cassert>
18 #include <string>
19 #include <string_view>
20 #include <type_traits>
21 #include "../types.h"
22
23 template <class View, class Separator>
test_one(Separator sep)24 constexpr void test_one(Separator sep) {
25 using namespace std::string_literals;
26 using namespace std::string_view_literals;
27
28 View v("abc def ghi"sv, sep);
29
30 // Non-const iterator.
31 {
32 auto i = v.begin();
33 static_assert(!std::is_reference_v<decltype(*i)>);
34 assert(std::ranges::equal(*i, "abc"s));
35 assert(std::ranges::equal(*(++i), "def"s));
36 assert(std::ranges::equal(*(++i), "ghi"s));
37 }
38
39 // Const iterator.
40 {
41 const auto ci = v.begin();
42 static_assert(!std::is_reference_v<decltype(*ci)>);
43 assert(std::ranges::equal(*ci, "abc"s));
44 }
45 }
46
test()47 constexpr bool test() {
48 // `View` is a forward range.
49 test_one<SplitViewDiff>(" ");
50 test_one<SplitViewInput>(' ');
51
52 return true;
53 }
54
main(int,char **)55 int main(int, char**) {
56 test();
57 static_assert(test());
58
59 return 0;
60 }
61