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// template <class charT, class traits, class Allocator>
15// void swap(basic_stringbuf<charT, traits, Allocator>& x,
16// basic_stringbuf<charT, traits, Allocator>& y);
17
18#include <sstream>
19#include <cassert>
20
21#include "test_macros.h"
22
23int main(int, char**)
24{
25 {
26 std::stringbuf buf1("testing");
27 std::stringbuf buf;
28 swap(buf, buf1);
29 assert(buf.str() == "testing");
30 assert(buf1.str() == "");
31 }
32 {
33 std::stringbuf buf1("testing", std::ios_base::in);
34 std::stringbuf buf;
35 swap(buf, buf1);
36 assert(buf.str() == "testing");
37 assert(buf1.str() == "");
38 }
39 {
40 std::stringbuf buf1("testing", std::ios_base::out);
41 std::stringbuf buf;
42 swap(buf, buf1);
43 assert(buf.str() == "testing");
44 assert(buf1.str() == "");
45 }
46#ifndef TEST_HAS_NO_WIDE_CHARACTERS
47 {
48 std::wstringbuf buf1(L"testing");
49 std::wstringbuf buf;
50 swap(buf, buf1);
51 assert(buf.str() == L"testing");
52 assert(buf1.str() == L"");
53 }
54 {
55 std::wstringbuf buf1(L"testing", std::ios_base::in);
56 std::wstringbuf buf;
57 swap(buf, buf1);
58 assert(buf.str() == L"testing");
59 assert(buf1.str() == L"");
60 }
61 {
62 std::wstringbuf buf1(L"testing", std::ios_base::out);
63 std::wstringbuf buf;
64 swap(buf, buf1);
65 assert(buf.str() == L"testing");
66 assert(buf1.str() == L"");
67 }
68#endif // TEST_HAS_NO_WIDE_CHARACTERS
69
70 return 0;
71}
72

source code of libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.assign/nonmember_swap.pass.cpp