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, c++20
10
11 // <string_view>
12
13 // constexpr bool contains(const CharT *x) const;
14
15 #include <string_view>
16 #include <cassert>
17
18 #include "test_macros.h"
19
test()20 constexpr bool test()
21 {
22 using SV = std::string_view;
23
24 const char* s = "abcde";
25 SV sv0;
26 SV sv1 {s + 4, 1};
27 SV sv3 {s + 2, 3};
28 SV svNot {"xyz", 3};
29
30 assert( sv0.contains(""));
31 assert(!sv0.contains("e"));
32
33 assert( sv1.contains(""));
34 assert(!sv1.contains("d"));
35 assert( sv1.contains("e"));
36 assert(!sv1.contains("de"));
37 assert(!sv1.contains("cd"));
38 assert(!sv1.contains("cde"));
39 assert(!sv1.contains("bcde"));
40 assert(!sv1.contains("abcde"));
41 assert(!sv1.contains("xyz"));
42
43 assert( sv3.contains(""));
44 assert( sv3.contains("d"));
45 assert( sv3.contains("e"));
46 assert( sv3.contains("de"));
47 assert( sv3.contains("cd"));
48 assert(!sv3.contains("ce"));
49 assert( sv3.contains("cde"));
50 assert(!sv3.contains("edc"));
51 assert(!sv3.contains("bcde"));
52 assert(!sv3.contains("abcde"));
53 assert(!sv3.contains("xyz"));
54
55 assert( svNot.contains(""));
56 assert(!svNot.contains("d"));
57 assert(!svNot.contains("e"));
58 assert(!svNot.contains("de"));
59 assert(!svNot.contains("cd"));
60 assert(!svNot.contains("cde"));
61 assert(!svNot.contains("bcde"));
62 assert(!svNot.contains("abcde"));
63 assert( svNot.contains("xyz"));
64 assert(!svNot.contains("zyx"));
65
66 return true;
67 }
68
main(int,char **)69 int main(int, char**)
70 {
71 test();
72 static_assert(test());
73
74 return 0;
75 }
76