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_stringstream
13 
14 // void swap(basic_stringstream& rhs);
15 
16 #include <sstream>
17 #include <cassert>
18 
19 #include "test_macros.h"
20 
main(int,char **)21 int main(int, char**)
22 {
23     {
24         std::stringstream ss0(" 123 456 ");
25         std::stringstream ss;
26         ss.swap(ss0);
27         assert(ss.rdbuf() != 0);
28         assert(ss.good());
29         assert(ss.str() == " 123 456 ");
30         int i = 0;
31         ss >> i;
32         assert(i == 123);
33         ss >> i;
34         assert(i == 456);
35         ss << i << ' ' << 123;
36         assert(ss.str() == "456 1236 ");
37         ss0 << i << ' ' << 123;
38         assert(ss0.str() == "456 123");
39     }
40     {
41         std::wstringstream ss0(L" 123 456 ");
42         std::wstringstream ss;
43         ss.swap(ss0);
44         assert(ss.rdbuf() != 0);
45         assert(ss.good());
46         assert(ss.str() == L" 123 456 ");
47         int i = 0;
48         ss >> i;
49         assert(i == 123);
50         ss >> i;
51         assert(i == 456);
52         ss << i << ' ' << 123;
53         assert(ss.str() == L"456 1236 ");
54         ss0 << i << ' ' << 123;
55         assert(ss0.str() == L"456 123");
56     }
57 
58   return 0;
59 }
60