| #ifndef FILESYSTEM_TEST_HELPER_H |
| #define FILESYSTEM_TEST_HELPER_H |
| |
| #include "filesystem_include.h" |
| |
| #include <sys/stat.h> // for stat, mkdir, mkfifo |
| #ifndef _WIN32 |
| #include <unistd.h> // for ftruncate, link, symlink, getcwd, chdir |
| #include <sys/statvfs.h> |
| #else |
| #include <io.h> |
| #include <direct.h> |
| #include <windows.h> // for CreateSymbolicLink, CreateHardLink |
| #endif |
| |
| #include <cassert> |
| #include <cerrno> |
| #include <chrono> |
| #include <cstdint> |
| #include <cstdio> // for printf |
| #include <string> |
| #include <system_error> |
| #include <type_traits> |
| #include <vector> |
| |
| #include "assert_macros.h" |
| #include "make_string.h" |
| #include "test_macros.h" |
| #include "format_string.h" |
| |
| // For creating socket files |
| #if !defined(__FreeBSD__) && !defined(__APPLE__) && !defined(_WIN32) |
| # include <sys/socket.h> |
| # include <sys/un.h> |
| #endif |
| |
| namespace utils { |
| #ifdef _WIN32 |
| inline int mkdir(const char* path, int mode) { (void)mode; return ::_mkdir(path); } |
| inline int symlink(const char* oldname, const char* newname, bool is_dir) { |
| DWORD flags = is_dir ? SYMBOLIC_LINK_FLAG_DIRECTORY : 0; |
| if (CreateSymbolicLinkA(newname, oldname, |
| flags | SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE)) |
| return 0; |
| if (GetLastError() != ERROR_INVALID_PARAMETER) |
| return 1; |
| return !CreateSymbolicLinkA(newname, oldname, flags); |
| } |
| inline int link(const char *oldname, const char* newname) { |
| return !CreateHardLinkA(newname, oldname, NULL); |
| } |
| inline int setenv(const char *var, const char *val, int overwrite) { |
| (void)overwrite; |
| return ::_putenv((std::string(var) + "=" + std::string(val)).c_str()); |
| } |
| inline int unsetenv(const char *var) { |
| return ::_putenv((std::string(var) + "=").c_str()); |
| } |
| inline bool space(std::string path, std::uintmax_t &capacity, |
| std::uintmax_t &free, std::uintmax_t &avail) { |
| ULARGE_INTEGER FreeBytesAvailableToCaller, TotalNumberOfBytes, |
| TotalNumberOfFreeBytes; |
| if (!GetDiskFreeSpaceExA(path.c_str(), &FreeBytesAvailableToCaller, |
| &TotalNumberOfBytes, &TotalNumberOfFreeBytes)) |
| return false; |
| capacity = TotalNumberOfBytes.QuadPart; |
| free = TotalNumberOfFreeBytes.QuadPart; |
| avail = FreeBytesAvailableToCaller.QuadPart; |
| assert(capacity > 0); |
| assert(free > 0); |
| assert(avail > 0); |
| return true; |
| } |
| #else |
| using ::mkdir; |
| inline int symlink(const char* oldname, const char* newname, bool is_dir) { (void)is_dir; return ::symlink(oldname, newname); } |
| using ::link; |
| using ::setenv; |
| using ::unsetenv; |
| inline bool space(std::string path, std::uintmax_t &capacity, |
| std::uintmax_t &free, std::uintmax_t &avail) { |
| struct statvfs expect; |
| if (::statvfs(path.c_str(), &expect) == -1) |
| return false; |
| assert(expect.f_bavail > 0); |
| assert(expect.f_bfree > 0); |
| assert(expect.f_bsize > 0); |
| assert(expect.f_blocks > 0); |
| assert(expect.f_frsize > 0); |
| auto do_mult = [&](std::uintmax_t val) { |
| std::uintmax_t fsize = expect.f_frsize; |
| std::uintmax_t new_val = val * fsize; |
| assert(new_val / fsize == val); // Test for overflow |
| return new_val; |
| }; |
| capacity = do_mult(expect.f_blocks); |
| free = do_mult(expect.f_bfree); |
| avail = do_mult(expect.f_bavail); |
| return true; |
| } |
| #endif |
| |
| // N.B. libc might define some of the foo[64] identifiers using macros from |
| // foo64 -> foo or vice versa. |
| #if defined(_WIN32) |
| using off64_t = std::int64_t; |
| #elif defined(__MVS__) || defined(__LP64__) |
| using off64_t = ::off_t; |
| #else |
| using ::off64_t; |
| #endif |
| |
| inline FILE* fopen64(const char* pathname, const char* mode) { |
| // Bionic does not distinguish between fopen and fopen64, but fopen64 |
| // wasn't added until API 24. |
| #if defined(_WIN32) || defined(__MVS__) || defined(__LP64__) || defined(__BIONIC__) |
| return ::fopen(pathname, mode); |
| #else |
| return ::fopen64(pathname, mode); |
| #endif |
| } |
| |
| inline int ftruncate64(int fd, off64_t length) { |
| #if defined(_WIN32) |
| // _chsize_s sets errno on failure and also returns the error number. |
| return ::_chsize_s(fd, length) ? -1 : 0; |
| #elif defined(__MVS__) || defined(__LP64__) |
| return ::ftruncate(fd, length); |
| #else |
| return ::ftruncate64(fd, length); |
| #endif |
| } |
| |
| inline std::string getcwd() { |
| // Assume that path lengths are not greater than this. |
| // This should be fine for testing purposes. |
| char buf[4096]; |
| char* ret = ::getcwd(buf, sizeof(buf)); |
| assert(ret && "getcwd failed"); |
| return std::string(ret); |
| } |
| |
| inline bool exists(std::string const& path) { |
| struct ::stat tmp; |
| return ::stat(path.c_str(), &tmp) == 0; |
| } |
| } // end namespace utils |
| |
| struct scoped_test_env |
| { |
| scoped_test_env() : test_root(available_cwd_path()) { |
| #ifdef _WIN32 |
| // Windows mkdir can create multiple recursive directories |
| // if needed. |
| std::string cmd = "mkdir " + test_root.string(); |
| #else |
| std::string cmd = "mkdir -p " + test_root.string(); |
| #endif |
| int ret = std::system(cmd.c_str()); |
| assert(ret == 0); |
| |
| // Ensure that the root_path is fully resolved, i.e. it contains no |
| // symlinks. The filesystem tests depend on that. We do this after |
| // creating the root_path, because `fs::canonical` requires the |
| // path to exist. |
| test_root = fs::canonical(test_root); |
| } |
| |
| ~scoped_test_env() { |
| #ifdef _WIN32 |
| std::string cmd = "rmdir /s /q " + test_root.string(); |
| int ret = std::system(cmd.c_str()); |
| assert(ret == 0); |
| #else |
| #if defined(__MVS__) |
| // The behaviour of chmod -R on z/OS prevents recursive |
| // permission change for directories that do not have read permission. |
| std::string cmd = "find " + test_root.string() + " -exec chmod 777 {} \\;"; |
| #else |
| std::string cmd = "chmod -R 777 " + test_root.string(); |
| #endif // defined(__MVS__) |
| int ret = std::system(cmd.c_str()); |
| #if !defined(_AIX) |
| // On AIX the chmod command will return non-zero when trying to set |
| // the permissions on a directory that contains a bad symlink. This triggers |
| // the assert, despite being able to delete everything with the following |
| // `rm -r` command. |
| assert(ret == 0); |
| #endif |
| |
| cmd = "rm -rf " + test_root.string(); |
| ret = std::system(cmd.c_str()); |
| assert(ret == 0); |
| #endif |
| } |
| |
| scoped_test_env(scoped_test_env const &) = delete; |
| scoped_test_env & operator=(scoped_test_env const &) = delete; |
| |
| fs::path make_env_path(std::string p) { return sanitize_path(p); } |
| |
| std::string sanitize_path(std::string raw) { |
| assert(raw.find("..") == std::string::npos); |
| std::string root = test_root.string(); |
| if (root.compare(0, root.size(), raw, 0, root.size()) != 0) { |
| assert(raw.front() != '\\'); |
| fs::path tmp(test_root); |
| tmp /= raw; |
| return tmp.string(); |
| } |
| return raw; |
| } |
| |
| // Purposefully using a size potentially larger than off_t here so we can |
| // test the behavior of libc++fs when it is built with _FILE_OFFSET_BITS=64 |
| // but the caller is not (std::filesystem also uses uintmax_t rather than |
| // off_t). On a 32-bit system this allows us to create a file larger than |
| // 2GB. |
| std::string create_file(fs::path filename_path, std::uintmax_t size = 0) { |
| std::string filename = sanitize_path(filename_path.string()); |
| |
| if (size > |
| static_cast<typename std::make_unsigned<utils::off64_t>::type>( |
| std::numeric_limits<utils::off64_t>::max())) { |
| fprintf(stderr, "create_file(%s, %ju) too large\n", |
| filename.c_str(), size); |
| abort(); |
| } |
| |
| #if defined(_WIN32) || defined(__MVS__) |
| # define FOPEN_CLOEXEC_FLAG "" |
| #else |
| # define FOPEN_CLOEXEC_FLAG "e" |
| #endif |
| FILE* file = utils::fopen64(filename.c_str(), "w" FOPEN_CLOEXEC_FLAG); |
| if (file == nullptr) { |
| fprintf(stderr, "fopen %s failed: %s\n", filename.c_str(), |
| strerror(errno)); |
| abort(); |
| } |
| |
| if (utils::ftruncate64( |
| fileno(file), static_cast<utils::off64_t>(size)) == -1) { |
| fprintf(stderr, "ftruncate %s %ju failed: %s\n", filename.c_str(), |
| size, strerror(errno)); |
| fclose(file); |
| abort(); |
| } |
| |
| fclose(file); |
| return filename; |
| } |
| |
| std::string create_dir(fs::path filename_path) { |
| std::string filename = filename_path.string(); |
| filename = sanitize_path(std::move(filename)); |
| int ret = utils::mkdir(filename.c_str(), 0777); // rwxrwxrwx mode |
| assert(ret == 0); |
| return filename; |
| } |
| |
| std::string create_file_dir_symlink(fs::path source_path, |
| fs::path to_path, |
| bool sanitize_source = true, |
| bool is_dir = false) { |
| std::string source = source_path.string(); |
| std::string to = to_path.string(); |
| if (sanitize_source) |
| source = sanitize_path(std::move(source)); |
| to = sanitize_path(std::move(to)); |
| int ret = utils::symlink(source.c_str(), to.c_str(), is_dir); |
| assert(ret == 0); |
| return to; |
| } |
| |
| std::string create_symlink(fs::path source_path, |
| fs::path to_path, |
| bool sanitize_source = true) { |
| return create_file_dir_symlink(source_path, to_path, sanitize_source, |
| false); |
| } |
| |
| std::string create_directory_symlink(fs::path source_path, |
| fs::path to_path, |
| bool sanitize_source = true) { |
| return create_file_dir_symlink(source_path, to_path, sanitize_source, |
| true); |
| } |
| |
| std::string create_hardlink(fs::path source_path, fs::path to_path) { |
| std::string source = source_path.string(); |
| std::string to = to_path.string(); |
| source = sanitize_path(std::move(source)); |
| to = sanitize_path(std::move(to)); |
| int ret = utils::link(source.c_str(), to.c_str()); |
| assert(ret == 0); |
| return to; |
| } |
| |
| #ifndef _WIN32 |
| std::string create_fifo(std::string file) { |
| file = sanitize_path(std::move(file)); |
| int ret = ::mkfifo(file.c_str(), 0666); // rw-rw-rw- mode |
| assert(ret == 0); |
| return file; |
| } |
| #endif |
| |
| // Some platforms doesn't support socket files so we shouldn't even |
| // allow tests to call this unguarded. |
| #if !defined(__FreeBSD__) && !defined(__APPLE__) && !defined(_WIN32) |
| std::string create_socket(std::string file) { |
| file = sanitize_path(std::move(file)); |
| |
| ::sockaddr_un address; |
| address.sun_family = AF_UNIX; |
| assert(file.size() <= sizeof(address.sun_path)); |
| ::strncpy(address.sun_path, file.c_str(), sizeof(address.sun_path)); |
| int fd = ::socket(AF_UNIX, SOCK_STREAM, 0); |
| ::bind(fd, reinterpret_cast<::sockaddr*>(&address), sizeof(address)); |
| return file; |
| } |
| #endif |
| |
| fs::path test_root; |
| |
| private: |
| // This could potentially introduce a filesystem race if multiple |
| // scoped_test_envs were created concurrently in the same test (hence |
| // sharing the same cwd). However, it is fairly unlikely to happen as |
| // we generally don't use scoped_test_env from multiple threads, so |
| // this is deemed acceptable. |
| // The cwd.filename() itself isn't unique across all tests in the suite, |
| // so start the numbering from a hash of the full cwd, to avoid |
| // different tests interfering with each other. |
| static inline fs::path available_cwd_path() { |
| fs::path const cwd = utils::getcwd(); |
| fs::path const tmp = fs::temp_directory_path(); |
| std::string base = cwd.filename().string(); |
| std::size_t i = std::hash<std::string>()(cwd.string()); |
| fs::path p = tmp / (base + "-static_env." + std::to_string(i)); |
| while (utils::exists(p.string())) { |
| p = tmp / (base + "-static_env." + std::to_string(++i)); |
| } |
| return p; |
| } |
| }; |
| |
| /// This class generates the following tree: |
| /// |
| /// static_test_env |
| /// |-- bad_symlink -> dne |
| /// |-- dir1 |
| /// | |-- dir2 |
| /// | | |-- afile3 |
| /// | | |-- dir3 |
| /// | | | `-- file5 |
| /// | | |-- file4 |
| /// | | `-- symlink_to_dir3 -> dir3 |
| /// | `-- file1 |
| /// | `-- file2 |
| /// |-- empty_file |
| /// |-- non_empty_file |
| /// |-- symlink_to_dir -> dir1 |
| /// `-- symlink_to_empty_file -> empty_file |
| /// |
| class static_test_env { |
| scoped_test_env env_; |
| public: |
| static_test_env() { |
| env_.create_symlink("dne", "bad_symlink", false); |
| env_.create_dir("dir1"); |
| env_.create_dir("dir1/dir2"); |
| env_.create_file("dir1/dir2/afile3"); |
| env_.create_dir("dir1/dir2/dir3"); |
| env_.create_file("dir1/dir2/dir3/file5"); |
| env_.create_file("dir1/dir2/file4"); |
| env_.create_directory_symlink("dir3", "dir1/dir2/symlink_to_dir3", false); |
| env_.create_file("dir1/file1"); |
| env_.create_file("dir1/file2", 42); |
| env_.create_file("empty_file"); |
| env_.create_file("non_empty_file", 42); |
| env_.create_directory_symlink("dir1", "symlink_to_dir", false); |
| env_.create_symlink("empty_file", "symlink_to_empty_file", false); |
| } |
| |
| const fs::path Root = env_.test_root; |
| |
| fs::path makePath(fs::path const& p) const { |
| // env_path is expected not to contain symlinks. |
| fs::path const& env_path = Root; |
| return env_path / p; |
| } |
| |
| const std::vector<fs::path> TestFileList = { |
| makePath("empty_file"), |
| makePath("non_empty_file"), |
| makePath("dir1/file1"), |
| makePath("dir1/file2") |
| }; |
| |
| const std::vector<fs::path> TestDirList = { |
| makePath("dir1"), |
| makePath("dir1/dir2"), |
| makePath("dir1/dir2/dir3") |
| }; |
| |
| const fs::path File = TestFileList[0]; |
| const fs::path Dir = TestDirList[0]; |
| const fs::path Dir2 = TestDirList[1]; |
| const fs::path Dir3 = TestDirList[2]; |
| const fs::path SymlinkToFile = makePath("symlink_to_empty_file"); |
| const fs::path SymlinkToDir = makePath("symlink_to_dir"); |
| const fs::path BadSymlink = makePath("bad_symlink"); |
| const fs::path DNE = makePath("DNE"); |
| const fs::path EmptyFile = TestFileList[0]; |
| const fs::path NonEmptyFile = TestFileList[1]; |
| const fs::path CharFile = "/dev/null"; // Hopefully this exists |
| |
| const std::vector<fs::path> DirIterationList = { |
| makePath("dir1/dir2"), |
| makePath("dir1/file1"), |
| makePath("dir1/file2") |
| }; |
| |
| const std::vector<fs::path> DirIterationListDepth1 = { |
| makePath("dir1/dir2/afile3"), |
| makePath("dir1/dir2/dir3"), |
| makePath("dir1/dir2/symlink_to_dir3"), |
| makePath("dir1/dir2/file4"), |
| }; |
| |
| const std::vector<fs::path> RecDirIterationList = { |
| makePath("dir1/dir2"), |
| makePath("dir1/file1"), |
| makePath("dir1/file2"), |
| makePath("dir1/dir2/afile3"), |
| makePath("dir1/dir2/dir3"), |
| makePath("dir1/dir2/symlink_to_dir3"), |
| makePath("dir1/dir2/file4"), |
| makePath("dir1/dir2/dir3/file5") |
| }; |
| |
| const std::vector<fs::path> RecDirFollowSymlinksIterationList = { |
| makePath("dir1/dir2"), |
| makePath("dir1/file1"), |
| makePath("dir1/file2"), |
| makePath("dir1/dir2/afile3"), |
| makePath("dir1/dir2/dir3"), |
| makePath("dir1/dir2/file4"), |
| makePath("dir1/dir2/dir3/file5"), |
| makePath("dir1/dir2/symlink_to_dir3"), |
| makePath("dir1/dir2/symlink_to_dir3/file5"), |
| }; |
| }; |
| |
| struct CWDGuard { |
| std::string oldCwd_; |
| CWDGuard() : oldCwd_(utils::getcwd()) { } |
| ~CWDGuard() { |
| int ret = ::chdir(oldCwd_.c_str()); |
| assert(ret == 0 && "chdir failed"); |
| } |
| |
| CWDGuard(CWDGuard const&) = delete; |
| CWDGuard& operator=(CWDGuard const&) = delete; |
| }; |
| |
| // Misc test types |
| |
| const MultiStringType PathList[] = { |
| MKSTR(""), |
| MKSTR(" "), |
| MKSTR("//"), |
| MKSTR("."), |
| MKSTR(".."), |
| MKSTR("foo"), |
| MKSTR("/"), |
| MKSTR("/foo"), |
| MKSTR("foo/"), |
| MKSTR("/foo/"), |
| MKSTR("foo/bar"), |
| MKSTR("/foo/bar"), |
| MKSTR("//net"), |
| MKSTR("//net/foo"), |
| MKSTR("///foo///"), |
| MKSTR("///foo///bar"), |
| MKSTR("/."), |
| MKSTR("./"), |
| MKSTR("/.."), |
| MKSTR("../"), |
| MKSTR("foo/."), |
| MKSTR("foo/.."), |
| MKSTR("foo/./"), |
| MKSTR("foo/./bar"), |
| MKSTR("foo/../"), |
| MKSTR("foo/../bar"), |
| MKSTR("c:"), |
| MKSTR("c:/"), |
| MKSTR("c:foo"), |
| MKSTR("c:/foo"), |
| MKSTR("c:foo/"), |
| MKSTR("c:/foo/"), |
| MKSTR("c:/foo/bar"), |
| MKSTR("prn:"), |
| MKSTR("c:\\"), |
| MKSTR("c:\\foo"), |
| MKSTR("c:foo\\"), |
| MKSTR("c:\\foo\\"), |
| MKSTR("c:\\foo/"), |
| MKSTR("c:/foo\\bar"), |
| MKSTR("//"), |
| MKSTR("/finally/we/need/one/really/really/really/really/really/really/really/long/string") |
| }; |
| const unsigned PathListSize = sizeof(PathList) / sizeof(MultiStringType); |
| |
| template <class Iter> |
| Iter IterEnd(Iter B) { |
| using VT = typename std::iterator_traits<Iter>::value_type; |
| for (; *B != VT{}; ++B) |
| ; |
| return B; |
| } |
| |
| template <class CharT> |
| const CharT* StrEnd(CharT const* P) { |
| return IterEnd(P); |
| } |
| |
| template <class CharT> |
| std::size_t StrLen(CharT const* P) { |
| return StrEnd(P) - P; |
| } |
| |
| // Testing the allocation behavior of the code_cvt functions requires |
| // *knowing* that the allocation was not done by "path::__str_". |
| // This hack forces path to allocate enough memory. |
| inline void PathReserve(fs::path& p, std::size_t N) { |
| auto const& native_ref = p.native(); |
| const_cast<fs::path::string_type&>(native_ref).reserve(N); |
| } |
| |
| template <class Iter1, class Iter2> |
| bool checkCollectionsEqual( |
| Iter1 start1, Iter1 const end1 |
| , Iter2 start2, Iter2 const end2 |
| ) |
| { |
| while (start1 != end1 && start2 != end2) { |
| if (*start1 != *start2) { |
| return false; |
| } |
| ++start1; ++start2; |
| } |
| return (start1 == end1 && start2 == end2); |
| } |
| |
| |
| template <class Iter1, class Iter2> |
| bool checkCollectionsEqualBackwards( |
| Iter1 const start1, Iter1 end1 |
| , Iter2 const start2, Iter2 end2 |
| ) |
| { |
| while (start1 != end1 && start2 != end2) { |
| --end1; --end2; |
| if (*end1 != *end2) { |
| return false; |
| } |
| } |
| return (start1 == end1 && start2 == end2); |
| } |
| |
| // We often need to test that the error_code was cleared if no error occurs |
| // this function returns an error_code which is set to an error that will |
| // never be returned by the filesystem functions. |
| inline std::error_code GetTestEC(unsigned Idx = 0) { |
| using std::errc; |
| auto GetErrc = [&]() { |
| switch (Idx) { |
| case 0: |
| return errc::address_family_not_supported; |
| case 1: |
| return errc::address_not_available; |
| case 2: |
| return errc::address_in_use; |
| case 3: |
| return errc::argument_list_too_long; |
| default: |
| assert(false && "Idx out of range"); |
| std::abort(); |
| } |
| }; |
| return std::make_error_code(GetErrc()); |
| } |
| |
| inline bool ErrorIsImp(const std::error_code& ec, |
| std::vector<std::errc> const& errors) { |
| std::error_condition cond = ec.default_error_condition(); |
| for (auto errc : errors) { |
| if (cond.value() == static_cast<int>(errc)) |
| return true; |
| } |
| return false; |
| } |
| |
| template <class... ErrcT> |
| inline bool ErrorIs(const std::error_code& ec, std::errc First, ErrcT... Rest) { |
| std::vector<std::errc> errors = {First, Rest...}; |
| return ErrorIsImp(ec, errors); |
| } |
| |
| // Provide our own Sleep routine since std::this_thread::sleep_for is not |
| // available in single-threaded mode. |
| template <class Dur> void SleepFor(Dur dur) { |
| using namespace std::chrono; |
| #if defined(_LIBCPP_HAS_NO_MONOTONIC_CLOCK) |
| using Clock = system_clock; |
| #else |
| using Clock = steady_clock; |
| #endif |
| const auto wake_time = Clock::now() + dur; |
| while (Clock::now() < wake_time) |
| ; |
| } |
| |
| inline bool PathEq(fs::path const& LHS, fs::path const& RHS) { |
| return LHS.native() == RHS.native(); |
| } |
| |
| inline bool PathEqIgnoreSep(fs::path LHS, fs::path RHS) { |
| LHS.make_preferred(); |
| RHS.make_preferred(); |
| return LHS.native() == RHS.native(); |
| } |
| |
| inline fs::perms NormalizeExpectedPerms(fs::perms P) { |
| #ifdef _WIN32 |
| // On Windows, fs::perms only maps down to one bit stored in the filesystem, |
| // a boolean readonly flag. |
| // Normalize permissions to the format it gets returned; all fs entries are |
| // read+exec for all users; writable ones also have the write bit set for |
| // all users. |
| P |= fs::perms::owner_read | fs::perms::group_read | fs::perms::others_read; |
| P |= fs::perms::owner_exec | fs::perms::group_exec | fs::perms::others_exec; |
| fs::perms Write = |
| fs::perms::owner_write | fs::perms::group_write | fs::perms::others_write; |
| if ((P & Write) != fs::perms::none) |
| P |= Write; |
| #endif |
| return P; |
| } |
| |
| struct ExceptionChecker { |
| std::errc expected_err; |
| fs::path expected_path1; |
| fs::path expected_path2; |
| unsigned num_paths; |
| const char* func_name; |
| std::string opt_message; |
| |
| explicit ExceptionChecker(std::errc first_err, const char* fun_name, |
| std::string opt_msg = {}) |
| : expected_err{first_err}, num_paths(0), func_name(fun_name), |
| opt_message(opt_msg) {} |
| explicit ExceptionChecker(fs::path p, std::errc first_err, |
| const char* fun_name, std::string opt_msg = {}) |
| : expected_err(first_err), expected_path1(p), num_paths(1), |
| func_name(fun_name), opt_message(opt_msg) {} |
| |
| explicit ExceptionChecker(fs::path p1, fs::path p2, std::errc first_err, |
| const char* fun_name, std::string opt_msg = {}) |
| : expected_err(first_err), expected_path1(p1), expected_path2(p2), |
| num_paths(2), func_name(fun_name), opt_message(opt_msg) {} |
| |
| void operator()(fs::filesystem_error const& Err) { |
| assert(ErrorIsImp(Err.code(), {expected_err})); |
| assert(Err.path1() == expected_path1); |
| assert(Err.path2() == expected_path2); |
| LIBCPP_ONLY(check_libcxx_string(Err)); |
| } |
| |
| void check_libcxx_string(fs::filesystem_error const& Err) { |
| std::string message = std::make_error_code(expected_err).message(); |
| |
| std::string additional_msg = ""; |
| if (!opt_message.empty()) { |
| additional_msg = opt_message + ": "; |
| } |
| auto transform_path = [](const fs::path& p) { |
| return "\"" + p.string() + "\""; |
| }; |
| std::string format = [&]() -> std::string { |
| switch (num_paths) { |
| case 0: |
| return format_string("filesystem error: in %s: %s%s", func_name, |
| additional_msg, message); |
| case 1: |
| return format_string("filesystem error: in %s: %s%s [%s]", func_name, |
| additional_msg, message, |
| transform_path(expected_path1).c_str()); |
| case 2: |
| return format_string("filesystem error: in %s: %s%s [%s] [%s]", |
| func_name, additional_msg, message, |
| transform_path(expected_path1).c_str(), |
| transform_path(expected_path2).c_str()); |
| default: |
| TEST_FAIL("unexpected case"); |
| return ""; |
| } |
| }(); |
| assert(format == Err.what()); |
| if (format != Err.what()) { |
| fprintf(stderr, |
| "filesystem_error::what() does not match expected output:\n"); |
| fprintf(stderr, " expected: \"%s\"\n", format.c_str()); |
| fprintf(stderr, " actual: \"%s\"\n\n", Err.what()); |
| } |
| } |
| |
| ExceptionChecker(ExceptionChecker const&) = delete; |
| ExceptionChecker& operator=(ExceptionChecker const&) = delete; |
| |
| }; |
| |
| inline fs::path GetWindowsInaccessibleDir() { |
| // Only makes sense on windows, but the code can be compiled for |
| // any platform. |
| const fs::path dir("C:\\System Volume Information"); |
| std::error_code ec; |
| const fs::path root("C:\\"); |
| for (const auto &ent : fs::directory_iterator(root, ec)) { |
| if (ent != dir) |
| continue; |
| // Basic sanity checks on the directory_entry |
| if (!ent.exists() || !ent.is_directory()) { |
| fprintf(stderr, "The expected inaccessible directory \"%s\" was found " |
| "but doesn't behave as expected, skipping tests " |
| "regarding it\n", dir.string().c_str()); |
| return fs::path(); |
| } |
| // Check that it indeed is inaccessible as expected |
| (void)fs::exists(ent, ec); |
| if (!ec) { |
| fprintf(stderr, "The expected inaccessible directory \"%s\" was found " |
| "but seems to be accessible, skipping tests " |
| "regarding it\n", dir.string().c_str()); |
| return fs::path(); |
| } |
| return ent; |
| } |
| fprintf(stderr, "No inaccessible directory \"%s\" found, skipping tests " |
| "regarding it\n", dir.string().c_str()); |
| return fs::path(); |
| } |
| |
| #endif /* FILESYSTEM_TEST_HELPER_H */ |
