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1 | // { dg-options "-std=gnu++23" } |
2 | // { dg-do compile { target c++23 } } | |
3 | ||
7adcbafe | 4 | // Copyright (C) 2021-2022 Free Software Foundation, Inc. |
f004d6d9 PF |
5 | // |
6 | // This file is part of the GNU ISO C++ Library. This library is free | |
7 | // software; you can redistribute it and/or modify it under the | |
8 | // terms of the GNU General Public License as published by the | |
9 | // Free Software Foundation; either version 3, or (at your option) | |
10 | // any later version. | |
11 | ||
12 | // This library is distributed in the hope that it will be useful, | |
13 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | // GNU General Public License for more details. | |
16 | ||
17 | // You should have received a copy of the GNU General Public License along | |
18 | // with this library; see the file COPYING3. If not see | |
19 | // <http://www.gnu.org/licenses/>. | |
20 | ||
21 | // basic_string_view contains | |
22 | ||
23 | #include <string_view> | |
24 | ||
25 | #ifndef __cpp_lib_string_contains | |
26 | # error "Feature-test macro for contains missing in <string_view>" | |
27 | #elif __cpp_lib_string_contains != 202011L | |
28 | # error "Feature-test macro for contains has wrong value in <string_view>" | |
29 | #endif | |
30 | ||
31 | void | |
32 | test01() | |
33 | { | |
34 | constexpr std::string_view haystack("no place for needles"); | |
35 | ||
36 | static_assert(haystack.contains(std::string_view(""))); | |
37 | static_assert(haystack.contains(std::string_view("no"))); | |
38 | static_assert(haystack.contains(std::string_view("needles"))); | |
39 | static_assert(haystack.contains(std::string_view(" for "))); | |
40 | static_assert(!haystack.contains(std::string_view("places"))); | |
41 | ||
42 | static_assert(!haystack.contains('\0')); | |
43 | static_assert(haystack.contains('n')); | |
44 | static_assert(haystack.contains('e')); | |
45 | static_assert(haystack.contains('s')); | |
46 | static_assert(!haystack.contains('x')); | |
47 | ||
48 | static_assert(haystack.contains("")); | |
49 | static_assert(haystack.contains("no")); | |
50 | static_assert(haystack.contains("needles")); | |
51 | static_assert(haystack.contains(" for ")); | |
52 | static_assert(!haystack.contains("places")); | |
53 | ||
54 | constexpr std::string_view nothing; | |
55 | static_assert(nothing.contains("")); | |
56 | static_assert(!nothing.contains('\0')); | |
57 | } |