f5256e16df
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@103516 91177308-0d34-0410-b5e6-96231b3b80d8
50 lines
1.3 KiB
C++
50 lines
1.3 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// <fstream>
|
|
|
|
// basic_filebuf<charT,traits>* open(const char* s, ios_base::openmode mode);
|
|
|
|
#include <fstream>
|
|
#include <cassert>
|
|
|
|
int main()
|
|
{
|
|
{
|
|
std::filebuf f;
|
|
assert(f.open("test.dat", std::ios_base::out) != 0);
|
|
assert(f.is_open());
|
|
assert(f.sputn("123", 3) == 3);
|
|
}
|
|
{
|
|
std::filebuf f;
|
|
assert(f.open("test.dat", std::ios_base::in) != 0);
|
|
assert(f.is_open());
|
|
assert(f.sbumpc() == '1');
|
|
assert(f.sbumpc() == '2');
|
|
assert(f.sbumpc() == '3');
|
|
}
|
|
remove("test.dat");
|
|
{
|
|
std::wfilebuf f;
|
|
assert(f.open("test.dat", std::ios_base::out) != 0);
|
|
assert(f.is_open());
|
|
assert(f.sputn(L"123", 3) == 3);
|
|
}
|
|
{
|
|
std::wfilebuf f;
|
|
assert(f.open("test.dat", std::ios_base::in) != 0);
|
|
assert(f.is_open());
|
|
assert(f.sbumpc() == L'1');
|
|
assert(f.sbumpc() == L'2');
|
|
assert(f.sbumpc() == L'3');
|
|
}
|
|
remove("test.dat");
|
|
}
|