xref: /llvm-project/libcxx/test/std/strings/basic.string/string.capacity/capacity.pass.cpp (revision d056b5be51bbbcaa4b38b6468c4946125178ddba)
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 // XFAIL: libcpp-no-exceptions
11 // <string>
12 
13 // size_type capacity() const;
14 
15 #include <string>
16 #include <cassert>
17 
18 #include "test_allocator.h"
19 #include "min_allocator.h"
20 
21 template <class S>
22 void
23 test(S s)
24 {
25     S::allocator_type::throw_after = 0;
26     try
27     {
28         while (s.size() < s.capacity())
29             s.push_back(typename S::value_type());
30         assert(s.size() == s.capacity());
31     }
32     catch (...)
33     {
34         assert(false);
35     }
36     S::allocator_type::throw_after = INT_MAX;
37 }
38 
39 int main()
40 {
41     {
42     typedef std::basic_string<char, std::char_traits<char>, test_allocator<char> > S;
43     S s;
44     test(s);
45     s.assign(10, 'a');
46     s.erase(5);
47     test(s);
48     s.assign(100, 'a');
49     s.erase(50);
50     test(s);
51     }
52 #if TEST_STD_VER >= 11
53     {
54     typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
55     S s;
56     assert(s.capacity() > 0);
57     }
58 #endif
59 }
60