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 // UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
9
10 // <string>
11
12 // constexpr bool contains(const CharT *x) const;
13
14 #include <string>
15 #include <cassert>
16
17 #include "test_macros.h"
18
test()19 constexpr bool test()
20 {
21 using S = std::string;
22
23 const char* s = "abcde";
24 S s0;
25 S s1 {s + 4, 1};
26 S s3 {s + 2, 3};
27 S sNot {"xyz", 3};
28
29 assert(s0.contains(""));
30 assert(!s0.contains("e"));
31
32 assert( s1.contains(""));
33 assert(!s1.contains("d"));
34 assert( s1.contains("e"));
35 assert(!s1.contains("de"));
36 assert(!s1.contains("cd"));
37 assert(!s1.contains("cde"));
38 assert(!s1.contains("bcde"));
39 assert(!s1.contains("abcde"));
40 assert(!s1.contains("xyz"));
41
42 assert( s3.contains(""));
43 assert( s3.contains("d"));
44 assert( s3.contains("e"));
45 assert( s3.contains("de"));
46 assert( s3.contains("cd"));
47 assert(!s3.contains("ce"));
48 assert( s3.contains("cde"));
49 assert(!s3.contains("edc"));
50 assert(!s3.contains("bcde"));
51 assert(!s3.contains("abcde"));
52 assert(!s3.contains("xyz"));
53
54 assert( sNot.contains(""));
55 assert(!sNot.contains("d"));
56 assert(!sNot.contains("e"));
57 assert(!sNot.contains("de"));
58 assert(!sNot.contains("cd"));
59 assert(!sNot.contains("cde"));
60 assert(!sNot.contains("bcde"));
61 assert(!sNot.contains("abcde"));
62 assert( sNot.contains("xyz"));
63 assert(!sNot.contains("zyx"));
64
65 return true;
66 }
67
main(int,char **)68 int main(int, char**)
69 {
70 test();
71 static_assert(test());
72
73 return 0;
74 }
75