1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// <string>
// iterator insert(const_iterator p, charT c); // constexpr since C++20
#include <string>
#include <stdexcept>
#include <cassert>
#include "test_macros.h"
#include "min_allocator.h"
template <class S>
TEST_CONSTEXPR_CXX20 void
test(S& s, typename S::const_iterator p, typename S::value_type c, S expected)
{
bool sufficient_cap = s.size() < s.capacity();
typename S::difference_type pos = p - s.begin();
typename S::iterator i = s.insert(p, c);
LIBCPP_ASSERT(s.__invariants());
assert(s == expected);
assert(i - s.begin() == pos);
assert(*i == c);
if (sufficient_cap)
assert(i == p);
}
TEST_CONSTEXPR_CXX20 bool test() {
{
typedef std::string S;
S s;
test(s, s.begin(), '1', S("1"));
test(s, s.begin(), 'a', S("a1"));
test(s, s.end(), 'b', S("a1b"));
test(s, s.end()-1, 'c', S("a1cb"));
test(s, s.end()-2, 'd', S("a1dcb"));
test(s, s.end()-3, '2', S("a12dcb"));
test(s, s.end()-4, '3', S("a132dcb"));
test(s, s.end()-5, '4', S("a1432dcb"));
test(s, s.begin()+1, '5', S("a51432dcb"));
test(s, s.begin()+2, '6', S("a561432dcb"));
test(s, s.begin()+3, '7', S("a5671432dcb"));
test(s, s.begin()+4, 'A', S("a567A1432dcb"));
test(s, s.begin()+5, 'B', S("a567AB1432dcb"));
test(s, s.begin()+6, 'C', S("a567ABC1432dcb"));
}
#if TEST_STD_VER >= 11
{
typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
S s;
test(s, s.begin(), '1', S("1"));
test(s, s.begin(), 'a', S("a1"));
test(s, s.end(), 'b', S("a1b"));
test(s, s.end()-1, 'c', S("a1cb"));
test(s, s.end()-2, 'd', S("a1dcb"));
test(s, s.end()-3, '2', S("a12dcb"));
test(s, s.end()-4, '3', S("a132dcb"));
test(s, s.end()-5, '4', S("a1432dcb"));
test(s, s.begin()+1, '5', S("a51432dcb"));
test(s, s.begin()+2, '6', S("a561432dcb"));
test(s, s.begin()+3, '7', S("a5671432dcb"));
test(s, s.begin()+4, 'A', S("a567A1432dcb"));
test(s, s.begin()+5, 'B', S("a567AB1432dcb"));
test(s, s.begin()+6, 'C', S("a567ABC1432dcb"));
}
#endif
return true;
}
int main(int, char**)
{
test();
#if TEST_STD_VER > 17
static_assert(test());
#endif
return 0;
}
|
