1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 // <sstream>
10 
11 // template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
12 // class basic_ostringstream
13 
14 // explicit basic_ostringstream(const basic_string<charT,traits,allocator>& str,
15 //                              ios_base::openmode which = ios_base::in);
16 
17 #include <sstream>
18 #include <cassert>
19 
20 #include "test_macros.h"
21 
22 int main(int, char**)
23 {
24     {
25         std::ostringstream ss(" 123 456");
26         assert(ss.rdbuf() != 0);
27         assert(ss.good());
28         assert(ss.str() == " 123 456");
29         int i = 234;
30         ss << i << ' ' << 567;
31         assert(ss.str() == "234 5676");
32     }
33     {
34         std::ostringstream ss(" 123 456", std::ios_base::in);
35         assert(ss.rdbuf() != 0);
36         assert(ss.good());
37         assert(ss.str() == " 123 456");
38         int i = 234;
39         ss << i << ' ' << 567;
40         assert(ss.str() == "234 5676");
41     }
42     {
43         std::wostringstream ss(L" 123 456");
44         assert(ss.rdbuf() != 0);
45         assert(ss.good());
46         assert(ss.str() == L" 123 456");
47         int i = 234;
48         ss << i << ' ' << 567;
49         assert(ss.str() == L"234 5676");
50     }
51     {
52         std::wostringstream ss(L" 123 456", std::ios_base::in);
53         assert(ss.rdbuf() != 0);
54         assert(ss.good());
55         assert(ss.str() == L" 123 456");
56         int i = 234;
57         ss << i << ' ' << 567;
58         assert(ss.str() == L"234 5676");
59     }
60 
61   return 0;
62 }
63