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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 // template<class charT, class traits, class Allocator>
     13 //   void swap(basic_string<charT,traits,Allocator>& lhs,
     14 //             basic_string<charT,traits,Allocator>& rhs);
     15 
     16 #include <string>
     17 #include <stdexcept>
     18 #include <algorithm>
     19 #include <cassert>
     20 
     21 #include "min_allocator.h"
     22 
     23 template <class S>
     24 void
     25 test(S s1, S s2)
     26 {
     27     S s1_ = s1;
     28     S s2_ = s2;
     29     swap(s1, s2);
     30     assert(s1.__invariants());
     31     assert(s2.__invariants());
     32     assert(s1 == s2_);
     33     assert(s2 == s1_);
     34 }
     35 
     36 int main()
     37 {
     38     {
     39     typedef std::string S;
     40     test(S(""), S(""));
     41     test(S(""), S("12345"));
     42     test(S(""), S("1234567890"));
     43     test(S(""), S("12345678901234567890"));
     44     test(S("abcde"), S(""));
     45     test(S("abcde"), S("12345"));
     46     test(S("abcde"), S("1234567890"));
     47     test(S("abcde"), S("12345678901234567890"));
     48     test(S("abcdefghij"), S(""));
     49     test(S("abcdefghij"), S("12345"));
     50     test(S("abcdefghij"), S("1234567890"));
     51     test(S("abcdefghij"), S("12345678901234567890"));
     52     test(S("abcdefghijklmnopqrst"), S(""));
     53     test(S("abcdefghijklmnopqrst"), S("12345"));
     54     test(S("abcdefghijklmnopqrst"), S("1234567890"));
     55     test(S("abcdefghijklmnopqrst"), S("12345678901234567890"));
     56     }
     57 #if __cplusplus >= 201103L
     58     {
     59     typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
     60     test(S(""), S(""));
     61     test(S(""), S("12345"));
     62     test(S(""), S("1234567890"));
     63     test(S(""), S("12345678901234567890"));
     64     test(S("abcde"), S(""));
     65     test(S("abcde"), S("12345"));
     66     test(S("abcde"), S("1234567890"));
     67     test(S("abcde"), S("12345678901234567890"));
     68     test(S("abcdefghij"), S(""));
     69     test(S("abcdefghij"), S("12345"));
     70     test(S("abcdefghij"), S("1234567890"));
     71     test(S("abcdefghij"), S("12345678901234567890"));
     72     test(S("abcdefghijklmnopqrst"), S(""));
     73     test(S("abcdefghijklmnopqrst"), S("12345"));
     74     test(S("abcdefghijklmnopqrst"), S("1234567890"));
     75     test(S("abcdefghijklmnopqrst"), S("12345678901234567890"));
     76     }
     77 #endif
     78 }
     79