| 1 | //===----------------------------------------------------------------------===// |
|---|---|
| 2 | // |
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | |
| 9 | // <fstream> |
| 10 | |
| 11 | // template <class charT, class traits = char_traits<charT> > |
| 12 | // class basic_fstream |
| 13 | |
| 14 | // void open(const string& s, ios_base::openmode mode = ios_base::in|ios_base::out); |
| 15 | |
| 16 | #include <fstream> |
| 17 | #include <cassert> |
| 18 | #include "test_macros.h" |
| 19 | #include "platform_support.h" |
| 20 | |
| 21 | int main(int, char**) |
| 22 | { |
| 23 | std::string temp = get_temp_file_name(); |
| 24 | { |
| 25 | std::fstream fs; |
| 26 | assert(!fs.is_open()); |
| 27 | fs.open(s: temp, mode: std::ios_base::in | std::ios_base::out |
| 28 | | std::ios_base::trunc); |
| 29 | assert(fs.is_open()); |
| 30 | double x = 0; |
| 31 | fs << 3.25; |
| 32 | fs.seekg(0); |
| 33 | fs >> x; |
| 34 | assert(x == 3.25); |
| 35 | } |
| 36 | std::remove(filename: temp.c_str()); |
| 37 | |
| 38 | #ifndef TEST_HAS_NO_WIDE_CHARACTERS |
| 39 | { |
| 40 | std::wfstream fs; |
| 41 | assert(!fs.is_open()); |
| 42 | fs.open(s: temp, mode: std::ios_base::in | std::ios_base::out |
| 43 | | std::ios_base::trunc); |
| 44 | assert(fs.is_open()); |
| 45 | double x = 0; |
| 46 | fs << 3.25; |
| 47 | fs.seekg(0); |
| 48 | fs >> x; |
| 49 | assert(x == 3.25); |
| 50 | } |
| 51 | std::remove(filename: temp.c_str()); |
| 52 | #endif |
| 53 | |
| 54 | return 0; |
| 55 | } |
| 56 |