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
24template <class S>
25void
26test(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
39int 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