member_swap.pass.cpp revision b64f8b07c104c6cc986570ac8ee0ed16a9f23976 
1//===----------------------------------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is dual licensed under the MIT and the University of Illinois Open
6// Source Licenses. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10// <sstream>
11
12// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
13// class basic_ostringstream
14
15// void swap(basic_ostringstream& rhs);
16
17#include <sstream>
18#include <cassert>
19
20int main()
21{
22    {
23        std::ostringstream ss0(" 123 456");
24        std::ostringstream ss;
25        ss.swap(ss0);
26        assert(ss.rdbuf() != 0);
27        assert(ss.good());
28        assert(ss.str() == " 123 456");
29        int i = 234;
30        ss << i << ' ' << 567;;
31        assert(ss.str() == "234 5676");
32        ss0 << i << ' ' << 567;;
33        assert(ss0.str() == "234 567");
34    }
35    {
36        std::wostringstream ss0(L" 123 456");
37        std::wostringstream ss;
38        ss.swap(ss0);
39        assert(ss.rdbuf() != 0);
40        assert(ss.good());
41        assert(ss.str() == L" 123 456");
42        int i = 234;
43        ss << i << ' ' << 567;;
44        assert(ss.str() == L"234 5676");
45        ss0 << i << ' ' << 567;;
46        assert(ss0.str() == L"234 567");
47    }
48}
49