open_pointer.pass.cpp revision f5256e16dfc425c1d466f6308d4026d529ce9e0b 
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// basic_filebuf<charT,traits>* open(const char* s, ios_base::openmode mode);
13
14#include <fstream>
15#include <cassert>
16
17int main()
18{
19    {
20        std::filebuf f;
21        assert(f.open("test.dat", std::ios_base::out) != 0);
22        assert(f.is_open());
23        assert(f.sputn("123", 3) == 3);
24    }
25    {
26        std::filebuf f;
27        assert(f.open("test.dat", std::ios_base::in) != 0);
28        assert(f.is_open());
29        assert(f.sbumpc() == '1');
30        assert(f.sbumpc() == '2');
31        assert(f.sbumpc() == '3');
32    }
33    remove("test.dat");
34    {
35        std::wfilebuf f;
36        assert(f.open("test.dat", std::ios_base::out) != 0);
37        assert(f.is_open());
38        assert(f.sputn(L"123", 3) == 3);
39    }
40    {
41        std::wfilebuf f;
42        assert(f.open("test.dat", std::ios_base::in) != 0);
43        assert(f.is_open());
44        assert(f.sbumpc() == L'1');
45        assert(f.sbumpc() == L'2');
46        assert(f.sbumpc() == L'3');
47    }
48    remove("test.dat");
49}
50