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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 // iterator insert(const_iterator p, charT c);
     13 
     14 #if _LIBCPP_DEBUG >= 1
     15 #define _LIBCPP_ASSERT(x, m) ((x) ? (void)0 : std::exit(0))
     16 #endif
     17 
     18 #include <string>
     19 #include <stdexcept>
     20 #include <cassert>
     21 
     22 #include "min_allocator.h"
     23 
     24 template <class S>
     25 void
     26 test(S& s, typename S::const_iterator p, typename S::value_type c, S expected)
     27 {
     28     bool sufficient_cap = s.size() < s.capacity();
     29     typename S::difference_type pos = p - s.begin();
     30     typename S::iterator i = s.insert(p, c);
     31     assert(s.__invariants());
     32     assert(s == expected);
     33     assert(i - s.begin() == pos);
     34     assert(*i == c);
     35     if (sufficient_cap)
     36         assert(i == p);
     37 }
     38 
     39 int main()
     40 {
     41     {
     42     typedef std::string S;
     43     S s;
     44     test(s, s.begin(), '1', S("1"));
     45     test(s, s.begin(), 'a', S("a1"));
     46     test(s, s.end(), 'b', S("a1b"));
     47     test(s, s.end()-1, 'c', S("a1cb"));
     48     test(s, s.end()-2, 'd', S("a1dcb"));
     49     test(s, s.end()-3, '2', S("a12dcb"));
     50     test(s, s.end()-4, '3', S("a132dcb"));
     51     test(s, s.end()-5, '4', S("a1432dcb"));
     52     test(s, s.begin()+1, '5', S("a51432dcb"));
     53     test(s, s.begin()+2, '6', S("a561432dcb"));
     54     test(s, s.begin()+3, '7', S("a5671432dcb"));
     55     test(s, s.begin()+4, 'A', S("a567A1432dcb"));
     56     test(s, s.begin()+5, 'B', S("a567AB1432dcb"));
     57     test(s, s.begin()+6, 'C', S("a567ABC1432dcb"));
     58     }
     59 #if __cplusplus >= 201103L
     60     {
     61     typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
     62     S s;
     63     test(s, s.begin(), '1', S("1"));
     64     test(s, s.begin(), 'a', S("a1"));
     65     test(s, s.end(), 'b', S("a1b"));
     66     test(s, s.end()-1, 'c', S("a1cb"));
     67     test(s, s.end()-2, 'd', S("a1dcb"));
     68     test(s, s.end()-3, '2', S("a12dcb"));
     69     test(s, s.end()-4, '3', S("a132dcb"));
     70     test(s, s.end()-5, '4', S("a1432dcb"));
     71     test(s, s.begin()+1, '5', S("a51432dcb"));
     72     test(s, s.begin()+2, '6', S("a561432dcb"));
     73     test(s, s.begin()+3, '7', S("a5671432dcb"));
     74     test(s, s.begin()+4, 'A', S("a567A1432dcb"));
     75     test(s, s.begin()+5, 'B', S("a567AB1432dcb"));
     76     test(s, s.begin()+6, 'C', S("a567ABC1432dcb"));
     77     }
     78 #endif
     79 #if _LIBCPP_DEBUG >= 1
     80     {
     81         typedef std::string S;
     82         S s;
     83         S s2;
     84         s.insert(s2.begin(), '1');
     85         assert(false);
     86     }
     87 #endif
     88 }
     89