| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // <fstream> |
| |
| // template <class charT, class traits = char_traits<charT> > |
| // class basic_fstream |
| |
| // explicit basic_fstream(const char* s, ios_base::openmode mode = ios_base::in | ios_base::out); |
| |
| // XFAIL: LIBCXX-AIX-FIXME |
| |
| #include <fstream> |
| #include <cassert> |
| #include "test_macros.h" |
| #include "platform_support.h" |
| |
| int main(int, char**) |
| { |
| std::string temp = get_temp_file_name(); |
| { |
| std::fstream fs(temp.c_str(), std::ios_base::in | std::ios_base::out |
| | std::ios_base::trunc); |
| double x = 0; |
| fs << 3.25; |
| fs.seekg(0); |
| fs >> x; |
| assert(x == 3.25); |
| } |
| std::remove(temp.c_str()); |
| |
| #ifndef TEST_HAS_NO_WIDE_CHARACTERS |
| { |
| std::wfstream fs(temp.c_str(), std::ios_base::in | std::ios_base::out |
| | std::ios_base::trunc); |
| double x = 0; |
| fs << 3.25; |
| fs.seekg(0); |
| fs >> x; |
| assert(x == 3.25); |
| } |
| std::remove(temp.c_str()); |
| #endif |
| |
| #if TEST_STD_VER >= 23 |
| // Test all the noreplace flag combinations |
| { |
| std::ios_base::openmode modes[] = { |
| std::ios_base::out | std::ios_base::noreplace, |
| std::ios_base::out | std::ios_base::trunc | std::ios_base::noreplace, |
| std::ios_base::in | std::ios_base::out | std::ios_base::trunc | std::ios_base::noreplace, |
| std::ios_base::out | std::ios_base::noreplace | std::ios_base::binary, |
| std::ios_base::out | std::ios_base::trunc | std::ios_base::noreplace | std::ios_base::binary, |
| std::ios_base::in | std::ios_base::out | std::ios_base::trunc | std::ios_base::noreplace | |
| std::ios_base::binary, |
| }; |
| for (auto mode : modes) { |
| std::string tmp = get_temp_file_name(); // also creates the file |
| |
| { |
| std::fstream f(tmp.c_str(), mode); |
| assert(!f.is_open()); // since it already exists |
| } |
| |
| { |
| std::remove(tmp.c_str()); |
| |
| std::fstream f(tmp.c_str(), mode); |
| assert(f.is_open()); // since it doesn't exist |
| } |
| } |
| |
| # ifndef TEST_HAS_NO_WIDE_CHARACTERS |
| for (auto mode : modes) { |
| std::string tmp = get_temp_file_name(); // also creates the file |
| |
| { |
| std::wfstream f(tmp.c_str(), mode); |
| assert(!f.is_open()); // since it already exists |
| } |
| |
| { |
| std::remove(tmp.c_str()); |
| |
| std::wfstream f(tmp.c_str(), mode); |
| assert(f.is_open()); // since it doesn't exist |
| } |
| } |
| # endif |
| } |
| #endif // TEST_STD_VER >= 23 |
| |
| return 0; |
| } |