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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 // basic_string<charT,traits,Allocator>& operator+=(const charT* s);
     13 
     14 #include <string>
     15 #include <cassert>
     16 
     17 #include "min_allocator.h"
     18 
     19 template <class S>
     20 void
     21 test(S s, const typename S::value_type* str, S expected)
     22 {
     23     s += str;
     24     assert(s.__invariants());
     25     assert(s == expected);
     26 }
     27 
     28 int main()
     29 {
     30     {
     31     typedef std::string S;
     32     test(S(), "", S());
     33     test(S(), "12345", S("12345"));
     34     test(S(), "1234567890", S("1234567890"));
     35     test(S(), "12345678901234567890", S("12345678901234567890"));
     36 
     37     test(S("12345"), "", S("12345"));
     38     test(S("12345"), "12345", S("1234512345"));
     39     test(S("12345"), "1234567890", S("123451234567890"));
     40     test(S("12345"), "12345678901234567890", S("1234512345678901234567890"));
     41 
     42     test(S("1234567890"), "", S("1234567890"));
     43     test(S("1234567890"), "12345", S("123456789012345"));
     44     test(S("1234567890"), "1234567890", S("12345678901234567890"));
     45     test(S("1234567890"), "12345678901234567890", S("123456789012345678901234567890"));
     46 
     47     test(S("12345678901234567890"), "", S("12345678901234567890"));
     48     test(S("12345678901234567890"), "12345", S("1234567890123456789012345"));
     49     test(S("12345678901234567890"), "1234567890", S("123456789012345678901234567890"));
     50     test(S("12345678901234567890"), "12345678901234567890",
     51          S("1234567890123456789012345678901234567890"));
     52     }
     53 #if __cplusplus >= 201103L
     54     {
     55     typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
     56     test(S(), "", S());
     57     test(S(), "12345", S("12345"));
     58     test(S(), "1234567890", S("1234567890"));
     59     test(S(), "12345678901234567890", S("12345678901234567890"));
     60 
     61     test(S("12345"), "", S("12345"));
     62     test(S("12345"), "12345", S("1234512345"));
     63     test(S("12345"), "1234567890", S("123451234567890"));
     64     test(S("12345"), "12345678901234567890", S("1234512345678901234567890"));
     65 
     66     test(S("1234567890"), "", S("1234567890"));
     67     test(S("1234567890"), "12345", S("123456789012345"));
     68     test(S("1234567890"), "1234567890", S("12345678901234567890"));
     69     test(S("1234567890"), "12345678901234567890", S("123456789012345678901234567890"));
     70 
     71     test(S("12345678901234567890"), "", S("12345678901234567890"));
     72     test(S("12345678901234567890"), "12345", S("1234567890123456789012345"));
     73     test(S("12345678901234567890"), "1234567890", S("123456789012345678901234567890"));
     74     test(S("12345678901234567890"), "12345678901234567890",
     75          S("1234567890123456789012345678901234567890"));
     76     }
     77 #endif
     78 }
     79