nonmember_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_istringstream
14
15// template <class charT, class traits, class Allocator>
16//   void
17//   swap(basic_istringstream<charT, traits, Allocator>& x,
18//        basic_istringstream<charT, traits, Allocator>& y);
19
20#include <sstream>
21#include <cassert>
22
23int main()
24{
25    {
26        std::istringstream ss0(" 123 456");
27        std::istringstream ss(" 789 321");
28        swap(ss, ss0);
29        assert(ss.rdbuf() != 0);
30        assert(ss.good());
31        assert(ss.str() == " 123 456");
32        int i = 0;
33        ss >> i;
34        assert(i == 123);
35        ss >> i;
36        assert(i == 456);
37        ss0 >> i;
38        assert(i == 789);
39        ss0 >> i;
40        assert(i == 321);
41    }
42    {
43        std::wistringstream ss0(L" 123 456");
44        std::wistringstream ss(L" 789 321");
45        swap(ss, ss0);
46        assert(ss.rdbuf() != 0);
47        assert(ss.good());
48        assert(ss.str() == L" 123 456");
49        int i = 0;
50        ss >> i;
51        assert(i == 123);
52        ss >> i;
53        assert(i == 456);
54        ss0 >> i;
55        assert(i == 789);
56        ss0 >> i;
57        assert(i == 321);
58    }
59}
60