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(charT x) const noexcept;
13 
14 #include <string>
15 #include <cassert>
16 
17 #include "test_macros.h"
18 
19 void test()
20 {
21     using S = std::string;
22 
23     S s1 {};
24     S s2 {"abcde", 5};
25 
26     ASSERT_NOEXCEPT(s1.contains('e'));
27 
28     assert(!s1.contains('c'));
29     assert(!s1.contains('e'));
30     assert(!s1.contains('x'));
31     assert( s2.contains('c'));
32     assert( s2.contains('e'));
33     assert(!s2.contains('x'));
34 }
35 
36 int main(int, char**)
37 {
38     test();
39 
40     return 0;
41 }
42