26         std::stringbuf buf1("testing");  in main()  local
28         swap(buf, buf1);  in main()
30         assert(buf1.str() == "");  in main()
33         std::stringbuf buf1("testing", std::ios_base::in);  in main()  local
35         swap(buf, buf1);  in main()
37         assert(buf1.str() == "");  in main()
40         std::stringbuf buf1("testing", std::ios_base::out);  in main()  local
42         swap(buf, buf1);  in main()
44         assert(buf1.str() == "");  in main()
48         std::wstringbuf buf1(L"testing");  in main()  local
50         swap(buf, buf1);  in main()
52         assert(buf1.str() == L"");  in main()
55         std::wstringbuf buf1(L"testing", std::ios_base::in);  in main()  local
57         swap(buf, buf1);  in main()
59         assert(buf1.str() == L"");  in main()
62         std::wstringbuf buf1(L"testing", std::ios_base::out);  in main()  local
64         swap(buf, buf1);  in main()
66         assert(buf1.str() == L"");  in main()