24         std::stringbuf buf1("testing");  in main()  local
26         buf.swap(buf1);  in main()
28         assert(buf1.str() == "");  in main()
31         std::stringbuf buf1("testing", std::ios_base::in);  in main()  local
33         buf.swap(buf1);  in main()
35         assert(buf1.str() == "");  in main()
38         std::stringbuf buf1("testing", std::ios_base::out);  in main()  local
40         buf.swap(buf1);  in main()
42         assert(buf1.str() == "");  in main()
46         std::wstringbuf buf1(L"testing");  in main()  local
48         buf.swap(buf1);  in main()
50         assert(buf1.str() == L"");  in main()
53         std::wstringbuf buf1(L"testing", std::ios_base::in);  in main()  local
55         buf.swap(buf1);  in main()
57         assert(buf1.str() == L"");  in main()
60         std::wstringbuf buf1(L"testing", std::ios_base::out);  in main()  local
62         buf.swap(buf1);  in main()
64         assert(buf1.str() == L"");  in main()