1 //===----------------------------------------------------------------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10 // <string>
11
12 // int compare(const basic_string& str) const
13
14 #include <string>
15 #include <cassert>
16
17 #include "test_macros.h"
18 #include "min_allocator.h"
19
sign(int x)20 int sign(int x)
21 {
22 if (x == 0)
23 return 0;
24 if (x < 0)
25 return -1;
26 return 1;
27 }
28
29 template <class S>
30 void
test(const S & s,const S & str,int x)31 test(const S& s, const S& str, int x)
32 {
33 assert(sign(s.compare(str)) == sign(x));
34 }
35
main()36 int main()
37 {
38 {
39 typedef std::string S;
40 test(S(""), S(""), 0);
41 test(S(""), S("abcde"), -5);
42 test(S(""), S("abcdefghij"), -10);
43 test(S(""), S("abcdefghijklmnopqrst"), -20);
44 test(S("abcde"), S(""), 5);
45 test(S("abcde"), S("abcde"), 0);
46 test(S("abcde"), S("abcdefghij"), -5);
47 test(S("abcde"), S("abcdefghijklmnopqrst"), -15);
48 test(S("abcdefghij"), S(""), 10);
49 test(S("abcdefghij"), S("abcde"), 5);
50 test(S("abcdefghij"), S("abcdefghij"), 0);
51 test(S("abcdefghij"), S("abcdefghijklmnopqrst"), -10);
52 test(S("abcdefghijklmnopqrst"), S(""), 20);
53 test(S("abcdefghijklmnopqrst"), S("abcde"), 15);
54 test(S("abcdefghijklmnopqrst"), S("abcdefghij"), 10);
55 test(S("abcdefghijklmnopqrst"), S("abcdefghijklmnopqrst"), 0);
56 }
57 #if TEST_STD_VER >= 11
58 {
59 typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
60 test(S(""), S(""), 0);
61 test(S(""), S("abcde"), -5);
62 test(S(""), S("abcdefghij"), -10);
63 test(S(""), S("abcdefghijklmnopqrst"), -20);
64 test(S("abcde"), S(""), 5);
65 test(S("abcde"), S("abcde"), 0);
66 test(S("abcde"), S("abcdefghij"), -5);
67 test(S("abcde"), S("abcdefghijklmnopqrst"), -15);
68 test(S("abcdefghij"), S(""), 10);
69 test(S("abcdefghij"), S("abcde"), 5);
70 test(S("abcdefghij"), S("abcdefghij"), 0);
71 test(S("abcdefghij"), S("abcdefghijklmnopqrst"), -10);
72 test(S("abcdefghijklmnopqrst"), S(""), 20);
73 test(S("abcdefghijklmnopqrst"), S("abcde"), 15);
74 test(S("abcdefghijklmnopqrst"), S("abcdefghij"), 10);
75 test(S("abcdefghijklmnopqrst"), S("abcdefghijklmnopqrst"), 0);
76 }
77 #endif
78
79 #if TEST_STD_VER > 3
80 { // LWG 2946
81 std::string s = " !";
82 assert(s.compare({"abc", 1}) < 0);
83 }
84 #endif
85 }
86