summaryrefslogtreecommitdiffstats
path: root/libcxx/test/strings/basic.string/string.capacity/resize_size.pass.cpp
blob: 14fe209fd59a3cc176d8601a889582dae54e5843 (plain)
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
//===----------------------------------------------------------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

// <string>

// void resize(size_type n);

#include <string>
#include <stdexcept>
#include <cassert>

#include "min_allocator.h"

template <class S>
void
test(S s, typename S::size_type n, S expected)
{
    try
    {
        s.resize(n);
        assert(s.__invariants());
        assert(n <= s.max_size());
        assert(s == expected);
    }
    catch (std::length_error&)
    {
        assert(n > s.max_size());
    }
}

int main()
{
    {
    typedef std::string S;
    test(S(), 0, S());
    test(S(), 1, S(1, '\0'));
    test(S(), 10, S(10, '\0'));
    test(S(), 100, S(100, '\0'));
    test(S("12345"), 0, S());
    test(S("12345"), 2, S("12"));
    test(S("12345"), 5, S("12345"));
    test(S("12345"), 15, S("12345\0\0\0\0\0\0\0\0\0\0", 15));
    test(S("12345678901234567890123456789012345678901234567890"), 0, S());
    test(S("12345678901234567890123456789012345678901234567890"), 10,
         S("1234567890"));
    test(S("12345678901234567890123456789012345678901234567890"), 50,
         S("12345678901234567890123456789012345678901234567890"));
    test(S("12345678901234567890123456789012345678901234567890"), 60,
         S("12345678901234567890123456789012345678901234567890\0\0\0\0\0\0\0\0\0\0", 60));
    test(S(), S::npos, S("not going to happen"));
    }
#if __cplusplus >= 201103L
    {
    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
    test(S(), 0, S());
    test(S(), 1, S(1, '\0'));
    test(S(), 10, S(10, '\0'));
    test(S(), 100, S(100, '\0'));
    test(S("12345"), 0, S());
    test(S("12345"), 2, S("12"));
    test(S("12345"), 5, S("12345"));
    test(S("12345"), 15, S("12345\0\0\0\0\0\0\0\0\0\0", 15));
    test(S("12345678901234567890123456789012345678901234567890"), 0, S());
    test(S("12345678901234567890123456789012345678901234567890"), 10,
         S("1234567890"));
    test(S("12345678901234567890123456789012345678901234567890"), 50,
         S("12345678901234567890123456789012345678901234567890"));
    test(S("12345678901234567890123456789012345678901234567890"), 60,
         S("12345678901234567890123456789012345678901234567890\0\0\0\0\0\0\0\0\0\0", 60));
    test(S(), S::npos, S("not going to happen"));
    }
#endif
}
OpenPOWER on IntegriCloud