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      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 "min_allocator.h"
     18 
     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
     30 test(const S& s, const S& str, int x)
     31 {
     32     assert(sign(s.compare(str)) == sign(x));
     33 }
     34 
     35 int main()
     36 {
     37     {
     38     typedef std::string S;
     39     test(S(""), S(""), 0);
     40     test(S(""), S("abcde"), -5);
     41     test(S(""), S("abcdefghij"), -10);
     42     test(S(""), S("abcdefghijklmnopqrst"), -20);
     43     test(S("abcde"), S(""), 5);
     44     test(S("abcde"), S("abcde"), 0);
     45     test(S("abcde"), S("abcdefghij"), -5);
     46     test(S("abcde"), S("abcdefghijklmnopqrst"), -15);
     47     test(S("abcdefghij"), S(""), 10);
     48     test(S("abcdefghij"), S("abcde"), 5);
     49     test(S("abcdefghij"), S("abcdefghij"), 0);
     50     test(S("abcdefghij"), S("abcdefghijklmnopqrst"), -10);
     51     test(S("abcdefghijklmnopqrst"), S(""), 20);
     52     test(S("abcdefghijklmnopqrst"), S("abcde"), 15);
     53     test(S("abcdefghijklmnopqrst"), S("abcdefghij"), 10);
     54     test(S("abcdefghijklmnopqrst"), S("abcdefghijklmnopqrst"), 0);
     55     }
     56 #if __cplusplus >= 201103L
     57     {
     58     typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
     59     test(S(""), S(""), 0);
     60     test(S(""), S("abcde"), -5);
     61     test(S(""), S("abcdefghij"), -10);
     62     test(S(""), S("abcdefghijklmnopqrst"), -20);
     63     test(S("abcde"), S(""), 5);
     64     test(S("abcde"), S("abcde"), 0);
     65     test(S("abcde"), S("abcdefghij"), -5);
     66     test(S("abcde"), S("abcdefghijklmnopqrst"), -15);
     67     test(S("abcdefghij"), S(""), 10);
     68     test(S("abcdefghij"), S("abcde"), 5);
     69     test(S("abcdefghij"), S("abcdefghij"), 0);
     70     test(S("abcdefghij"), S("abcdefghijklmnopqrst"), -10);
     71     test(S("abcdefghijklmnopqrst"), S(""), 20);
     72     test(S("abcdefghijklmnopqrst"), S("abcde"), 15);
     73     test(S("abcdefghijklmnopqrst"), S("abcdefghij"), 10);
     74     test(S("abcdefghijklmnopqrst"), S("abcdefghijklmnopqrst"), 0);
     75     }
     76 #endif
     77 }
     78