Complete rcutils API coverage #272
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| // Copyright 2020 Open Source Robotics Foundation, Inc. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
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| #ifndef MOCKING_UTILS__FILESYSTEM_HPP_ | ||
| #define MOCKING_UTILS__FILESYSTEM_HPP_ | ||
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| #include <stdio.h> | ||
| #include <string.h> | ||
| #include <sys/stat.h> | ||
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| #ifndef _WIN32 | ||
| #include <sys/types.h> | ||
| #include <dirent.h> | ||
| #else | ||
| #include <windows.h> | ||
| #endif | ||
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| #include <map> | ||
| #include <string> | ||
| #include <type_traits> | ||
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| #include "rcutils/macros.h" | ||
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| #include "patch.hpp" | ||
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| namespace mocking_utils | ||
| { | ||
| namespace filesystem | ||
| { | ||
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| struct FileTypes | ||
| { | ||
| static constexpr mode_t REGULAR_FILE = S_IFREG; | ||
| static constexpr mode_t DIRECTORY = S_IFDIR; | ||
| }; | ||
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| struct Permissions | ||
| { | ||
| #ifndef _WIN32 | ||
| static constexpr mode_t USER_READABLE = S_IRUSR; | ||
| static constexpr mode_t USER_WRITABLE = S_IWUSR; | ||
| #else | ||
| static constexpr mode_t USER_READABLE = _S_IREAD; | ||
| static constexpr mode_t USER_WRITABLE = _S_IWRITE; | ||
| #endif | ||
| }; | ||
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| template<size_t N> | ||
| class FileSystem | ||
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Contributor
There was a problem hiding this comment. I know it's a bit subjective and I suggested the opposite on a different file, but this class doesn't seem to reuse much code across #ifdef blocks. Since it's the filesystem and each OS handles it differently, I think this file makes sense define the full class in single ifdef blocks. |
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| { | ||
| public: | ||
| explicit FileSystem(const std::string & target) | ||
| #ifndef _WIN32 | ||
| : opendir_mock_(MOCKING_UTILS_PATCH_TARGET(target, opendir), | ||
| MOCKING_UTILS_PATCH_PROXY(opendir)), | ||
| #else | ||
| : find_first_file_mock_(MOCKING_UTILS_PATCH_TARGET(target, FindFirstFile), | ||
| MOCKING_UTILS_PATCH_PROXY(FindFirstFile)), | ||
| #endif | ||
| #ifndef _GNU_SOURCE | ||
|
Contributor
There was a problem hiding this comment. Also seems like a good candidate for combining with the ifndef block at line 88 below. Line 87 is the only line shared between the two cases. |
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| stat_mock_(MOCKING_UTILS_PATCH_TARGET(target, stat), | ||
| MOCKING_UTILS_PATCH_PROXY(stat)) | ||
| #else | ||
| __xstat_mock_(MOCKING_UTILS_PATCH_TARGET(target, __xstat), | ||
| MOCKING_UTILS_PATCH_PROXY(__xstat)) | ||
| #endif | ||
| { | ||
| #ifndef _WIN32 | ||
| opendir_mock_.then_call(std::bind(&FileSystem::do_opendir, this, std::placeholders::_1)); | ||
| #else | ||
| find_first_file_mock_.then_call( | ||
| std::bind( | ||
| &FileSystem::do_FindFirstFile, this, | ||
| std::placeholders::_1, std::placeholders::_2)) | ||
| #endif | ||
| #ifndef _GNU_SOURCE | ||
| stat_mock_.then_call( | ||
| std::bind( | ||
| &FileSystem::do_stat, this, | ||
| std::placeholders::_1, std::placeholders::_2)); | ||
| #else | ||
| __xstat_mock_.then_call( | ||
| std::bind( | ||
| &FileSystem::do___xstat, this, std::placeholders::_1, | ||
| std::placeholders::_2, std::placeholders::_3)); | ||
| #endif | ||
| } | ||
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| void exhaust_file_descriptors() | ||
| { | ||
| #ifdef _WIN32 | ||
| forced_errno_ = ERROR_NO_MORE_SEARCH_HANDLES; | ||
| #else | ||
| forced_errno_ = EMFILE; | ||
| #endif | ||
| } | ||
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| struct stat & file_info(const std::string & path) | ||
| { | ||
| return files_info_[path]; | ||
| } | ||
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| private: | ||
| #ifndef _WIN32 | ||
| DIR * do_opendir(const char *) | ||
| { | ||
| if (forced_errno_ != 0) { | ||
| errno = forced_errno_; | ||
| return NULL; | ||
| } | ||
| errno = ENOENT; | ||
| return NULL; | ||
| } | ||
| MOCKING_UTILS_PATCH_TYPE(N, opendir) opendir_mock_; | ||
| #else | ||
| HANDLE do_FindFirstFile(LPCSTR, LPWIN32_FIND_DATAA) | ||
| { | ||
| if (forced_errno_ != 0) { | ||
| SetLastError(forced_errno_); | ||
| return INVALID_HANDLE_VALUE; | ||
| } | ||
| SetLastError(ERROR_FILE_NOT_FOUND); | ||
| return INVALID_HANDLE_VALUE; | ||
| } | ||
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| MOCKING_UTILS_PATCH_TYPE(N, FindFirstFile) find_first_file_mock_; | ||
| #endif | ||
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| #ifndef _GNU_SOURCE | ||
| int do_stat(const char * path, struct stat * info) | ||
| { | ||
| #else | ||
| int do___xstat(int, const char * path, struct stat * info) | ||
| { | ||
| #endif | ||
| if (files_info_.count(path) == 0) { | ||
| errno = ENOENT; | ||
| return -1; | ||
| } | ||
| *info = files_info_[path]; | ||
| return 0; | ||
| } | ||
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| #ifndef _GNU_SOURCE | ||
| MOCKING_UTILS_PATCH_TYPE(N, stat) stat_mock_; | ||
| #else | ||
| MOCKING_UTILS_PATCH_TYPE(N, __xstat) __xstat_mock_; | ||
| #endif | ||
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| int forced_errno_{0}; | ||
| std::map<std::string, struct stat> files_info_; | ||
| }; | ||
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| } // namespace filesystem | ||
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| /// Patch filesystem API, based on `what` binary object should be affected. | ||
| #define patch_filesystem(what) filesystem::FileSystem<__COUNTER__>(what) | ||
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| } // namespace mocking_utils | ||
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| #endif // MOCKING_UTILS__FILESYSTEM_HPP_ | ||
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