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 // template<class charT, class traits, class Allocator>
12 //   bool operator<(const basic_string<charT,traits,Allocator>& lhs,
13 //                  const basic_string<charT,traits,Allocator>& rhs);
14 
15 #include <string>
16 #include <cassert>
17 
18 #include "test_macros.h"
19 #include "min_allocator.h"
20 
21 template <class S>
22 void
23 test(const S& lhs, const S& rhs, bool x)
24 {
25     assert((lhs < rhs) == x);
26 }
27 
28 int main(int, char**)
29 {
30     {
31     typedef std::string S;
32     test(S(""), S(""), false);
33     test(S(""), S("abcde"), true);
34     test(S(""), S("abcdefghij"), true);
35     test(S(""), S("abcdefghijklmnopqrst"), true);
36     test(S("abcde"), S(""), false);
37     test(S("abcde"), S("abcde"), false);
38     test(S("abcde"), S("abcdefghij"), true);
39     test(S("abcde"), S("abcdefghijklmnopqrst"), true);
40     test(S("abcdefghij"), S(""), false);
41     test(S("abcdefghij"), S("abcde"), false);
42     test(S("abcdefghij"), S("abcdefghij"), false);
43     test(S("abcdefghij"), S("abcdefghijklmnopqrst"), true);
44     test(S("abcdefghijklmnopqrst"), S(""), false);
45     test(S("abcdefghijklmnopqrst"), S("abcde"), false);
46     test(S("abcdefghijklmnopqrst"), S("abcdefghij"), false);
47     test(S("abcdefghijklmnopqrst"), S("abcdefghijklmnopqrst"), false);
48     }
49 #if TEST_STD_VER >= 11
50     {
51     typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
52     test(S(""), S(""), false);
53     test(S(""), S("abcde"), true);
54     test(S(""), S("abcdefghij"), true);
55     test(S(""), S("abcdefghijklmnopqrst"), true);
56     test(S("abcde"), S(""), false);
57     test(S("abcde"), S("abcde"), false);
58     test(S("abcde"), S("abcdefghij"), true);
59     test(S("abcde"), S("abcdefghijklmnopqrst"), true);
60     test(S("abcdefghij"), S(""), false);
61     test(S("abcdefghij"), S("abcde"), false);
62     test(S("abcdefghij"), S("abcdefghij"), false);
63     test(S("abcdefghij"), S("abcdefghijklmnopqrst"), true);
64     test(S("abcdefghijklmnopqrst"), S(""), false);
65     test(S("abcdefghijklmnopqrst"), S("abcde"), false);
66     test(S("abcdefghijklmnopqrst"), S("abcdefghij"), false);
67     test(S("abcdefghijklmnopqrst"), S("abcdefghijklmnopqrst"), false);
68     }
69 #endif
70 
71   return 0;
72 }
73