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_ofstream
14 
15 // void open(const char* s, ios_base::openmode mode = ios_base::out);
16 
17 #include <fstream>
18 #include <cassert>
19 #include "platform_support.h"
20 
main()21 int main()
22 {
23     std::string temp = get_temp_file_name();
24     {
25         std::ofstream fs;
26         assert(!fs.is_open());
27         char c = 'a';
28         fs << c;
29         assert(fs.fail());
30         fs.open(temp.c_str());
31         assert(fs.is_open());
32         fs << c;
33     }
34     {
35         std::ifstream fs(temp.c_str());
36         char c = 0;
37         fs >> c;
38         assert(c == 'a');
39     }
40     std::remove(temp.c_str());
41     {
42         std::wofstream fs;
43         assert(!fs.is_open());
44         wchar_t c = L'a';
45         fs << c;
46         assert(fs.fail());
47         fs.open(temp.c_str());
48         assert(fs.is_open());
49         fs << c;
50     }
51     {
52         std::wifstream fs(temp.c_str());
53         wchar_t c = 0;
54         fs >> c;
55         assert(c == L'a');
56     }
57     std::remove(temp.c_str());
58 }
59