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_stringbuf
13 
14 // void swap(basic_stringbuf& 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::stringbuf buf1("testing");
25         std::stringbuf buf;
26         buf.swap(buf1);
27         assert(buf.str() == "testing");
28         assert(buf1.str() == "");
29     }
30     {
31         std::stringbuf buf1("testing", std::ios_base::in);
32         std::stringbuf buf;
33         buf.swap(buf1);
34         assert(buf.str() == "testing");
35         assert(buf1.str() == "");
36     }
37     {
38         std::stringbuf buf1("testing", std::ios_base::out);
39         std::stringbuf buf;
40         buf.swap(buf1);
41         assert(buf.str() == "testing");
42         assert(buf1.str() == "");
43     }
44 #ifndef TEST_HAS_NO_WIDE_CHARACTERS
45     {
46         std::wstringbuf buf1(L"testing");
47         std::wstringbuf buf;
48         buf.swap(buf1);
49         assert(buf.str() == L"testing");
50         assert(buf1.str() == L"");
51     }
52     {
53         std::wstringbuf buf1(L"testing", std::ios_base::in);
54         std::wstringbuf buf;
55         buf.swap(buf1);
56         assert(buf.str() == L"testing");
57         assert(buf1.str() == L"");
58     }
59     {
60         std::wstringbuf buf1(L"testing", std::ios_base::out);
61         std::wstringbuf buf;
62         buf.swap(buf1);
63         assert(buf.str() == L"testing");
64         assert(buf1.str() == L"");
65     }
66 #endif // TEST_HAS_NO_WIDE_CHARACTERS
67 
68   return 0;
69 }
70