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_istringstream
13 
14 // explicit basic_istringstream(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::istringstream ss(" 123 456");
26         assert(ss.rdbuf() != 0);
27         assert(ss.good());
28         assert(ss.str() == " 123 456");
29         int i = 0;
30         ss >> i;
31         assert(i == 123);
32         ss >> i;
33         assert(i == 456);
34     }
35     {
36         std::istringstream ss(" 123 456", std::ios_base::out);
37         assert(ss.rdbuf() != 0);
38         assert(ss.good());
39         assert(ss.str() == " 123 456");
40         int i = 0;
41         ss >> i;
42         assert(i == 123);
43         ss >> i;
44         assert(i == 456);
45     }
46     {
47         std::wistringstream ss(L" 123 456");
48         assert(ss.rdbuf() != 0);
49         assert(ss.good());
50         assert(ss.str() == L" 123 456");
51         int i = 0;
52         ss >> i;
53         assert(i == 123);
54         ss >> i;
55         assert(i == 456);
56     }
57     {
58         std::wistringstream ss(L" 123 456", std::ios_base::out);
59         assert(ss.rdbuf() != 0);
60         assert(ss.good());
61         assert(ss.str() == L" 123 456");
62         int i = 0;
63         ss >> i;
64         assert(i == 123);
65         ss >> i;
66         assert(i == 456);
67     }
68 
69   return 0;
70 }
71