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