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 // <string>
10 
11 // bool empty() const noexcept;
12 
13 #include <string>
14 #include <cassert>
15 
16 #include "test_macros.h"
17 #include "min_allocator.h"
18 
19 template <class S>
20 void
21 test(const S& s)
22 {
23     ASSERT_NOEXCEPT(s.empty());
24     assert(s.empty() == (s.size() == 0));
25 }
26 
27 int main(int, char**)
28 {
29     {
30     typedef std::string S;
31     test(S());
32     test(S("123"));
33     test(S("12345678901234567890123456789012345678901234567890"));
34     }
35 #if TEST_STD_VER >= 11
36     {
37     typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
38     test(S());
39     test(S("123"));
40     test(S("12345678901234567890123456789012345678901234567890"));
41     }
42 #endif
43 
44   return 0;
45 }
46