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// <fstream>
11
12// template <class charT, class traits = char_traits<charT> >
13// class basic_ifstream
14
15// void swap(basic_ifstream& rhs);
16
17#include <fstream>
18#include <cassert>
19
20int main()
21{
22    {
23        std::ifstream fs1("test.dat");
24        std::ifstream fs2("test2.dat");
25        fs1.swap(fs2);
26        double x = 0;
27        fs1 >> x;
28        assert(x == 4.5);
29        fs2 >> x;
30        assert(x == 3.25);
31    }
32    {
33        std::wifstream fs1("test.dat");
34        std::wifstream fs2("test2.dat");
35        fs1.swap(fs2);
36        double x = 0;
37        fs1 >> x;
38        assert(x == 4.5);
39        fs2 >> x;
40        assert(x == 3.25);
41    }
42}
43