member_swap.pass.cpp revision bc8d3f97eb5c958007f2713238472e0c1c8fe02c 
1//===----------------------------------------------------------------------===//
2//
3// ��������������������The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10// <fstream>
11
12// template <class charT, class traits = char_traits<charT> >
13// class basic_ofstream
14
15// void swap(basic_ofstream& rhs);
16
17#include <fstream>
18#include <cassert>
19
20int main()
21{
22    {
23        std::ofstream fs1("test1.dat");
24        std::ofstream fs2("test2.dat");
25        fs1 << 3.25;
26        fs2 << 4.5;
27        fs1.swap(fs2);
28        fs1 << ' ' << 3.25;
29        fs2 << ' ' << 4.5;
30    }
31    {
32        std::ifstream fs("test1.dat");
33        double x = 0;
34        fs >> x;
35        assert(x == 3.25);
36        fs >> x;
37        assert(x == 4.5);
38    }
39    remove("test1.dat");
40    {
41        std::ifstream fs("test2.dat");
42        double x = 0;
43        fs >> x;
44        assert(x == 4.5);
45        fs >> x;
46        assert(x == 3.25);
47    }
48    remove("test2.dat");
49    {
50        std::wofstream fs1("test1.dat");
51        std::wofstream fs2("test2.dat");
52        fs1 << 3.25;
53        fs2 << 4.5;
54        fs1.swap(fs2);
55        fs1 << ' ' << 3.25;
56        fs2 << ' ' << 4.5;
57    }
58    {
59        std::wifstream fs("test1.dat");
60        double x = 0;
61        fs >> x;
62        assert(x == 3.25);
63        fs >> x;
64        assert(x == 4.5);
65    }
66    remove("test1.dat");
67    {
68        std::wifstream fs("test2.dat");
69        double x = 0;
70        fs >> x;
71        assert(x == 4.5);
72        fs >> x;
73        assert(x == 3.25);
74    }
75    remove("test2.dat");
76}
77