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 // int compare(const charT *s) const;
12
13 #include <string>
14 #include <cassert>
15
16 #include "test_macros.h"
17 #include "min_allocator.h"
18
sign(int x)19 int sign(int x)
20 {
21 if (x == 0)
22 return 0;
23 if (x < 0)
24 return -1;
25 return 1;
26 }
27
28 template <class S>
29 void
test(const S & s,const typename S::value_type * str,int x)30 test(const S& s, const typename S::value_type* str, int x)
31 {
32 assert(sign(s.compare(str)) == sign(x));
33 }
34
main(int,char **)35 int main(int, char**)
36 {
37 {
38 typedef std::string S;
39 test(S(""), "", 0);
40 test(S(""), "abcde", -5);
41 test(S(""), "abcdefghij", -10);
42 test(S(""), "abcdefghijklmnopqrst", -20);
43 test(S("abcde"), "", 5);
44 test(S("abcde"), "abcde", 0);
45 test(S("abcde"), "abcdefghij", -5);
46 test(S("abcde"), "abcdefghijklmnopqrst", -15);
47 test(S("abcdefghij"), "", 10);
48 test(S("abcdefghij"), "abcde", 5);
49 test(S("abcdefghij"), "abcdefghij", 0);
50 test(S("abcdefghij"), "abcdefghijklmnopqrst", -10);
51 test(S("abcdefghijklmnopqrst"), "", 20);
52 test(S("abcdefghijklmnopqrst"), "abcde", 15);
53 test(S("abcdefghijklmnopqrst"), "abcdefghij", 10);
54 test(S("abcdefghijklmnopqrst"), "abcdefghijklmnopqrst", 0);
55 }
56 #if TEST_STD_VER >= 11
57 {
58 typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
59 test(S(""), "", 0);
60 test(S(""), "abcde", -5);
61 test(S(""), "abcdefghij", -10);
62 test(S(""), "abcdefghijklmnopqrst", -20);
63 test(S("abcde"), "", 5);
64 test(S("abcde"), "abcde", 0);
65 test(S("abcde"), "abcdefghij", -5);
66 test(S("abcde"), "abcdefghijklmnopqrst", -15);
67 test(S("abcdefghij"), "", 10);
68 test(S("abcdefghij"), "abcde", 5);
69 test(S("abcdefghij"), "abcdefghij", 0);
70 test(S("abcdefghij"), "abcdefghijklmnopqrst", -10);
71 test(S("abcdefghijklmnopqrst"), "", 20);
72 test(S("abcdefghijklmnopqrst"), "abcde", 15);
73 test(S("abcdefghijklmnopqrst"), "abcdefghij", 10);
74 test(S("abcdefghijklmnopqrst"), "abcdefghijklmnopqrst", 0);
75 }
76 #endif
77
78 return 0;
79 }
80