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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-21 11:54:28 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-21 11:54:28 +0000 |
commit | e6918187568dbd01842d8d1d2c808ce16a894239 (patch) | |
tree | 64f88b554b444a49f656b6c656111a145cbbaa28 /src/fmt/test/posix-mock-test.cc | |
parent | Initial commit. (diff) | |
download | ceph-upstream/18.2.2.tar.xz ceph-upstream/18.2.2.zip |
Adding upstream version 18.2.2.upstream/18.2.2
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/fmt/test/posix-mock-test.cc | 459 |
1 files changed, 459 insertions, 0 deletions
diff --git a/src/fmt/test/posix-mock-test.cc b/src/fmt/test/posix-mock-test.cc new file mode 100644 index 000000000..819a94dfb --- /dev/null +++ b/src/fmt/test/posix-mock-test.cc @@ -0,0 +1,459 @@ +// Tests of the C++ interface to POSIX functions that require mocks +// +// Copyright (c) 2012 - present, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. + +// Disable bogus MSVC warnings. +#if !defined(_CRT_SECURE_NO_WARNINGS) && defined(_MSC_VER) +# define _CRT_SECURE_NO_WARNINGS +#endif + +#include "posix-mock.h" + +#include <errno.h> +#include <fcntl.h> + +#include <climits> +#include <memory> + +#include "../src/os.cc" + +#ifdef _WIN32 +# include <io.h> +# undef max +#endif + +#include "gmock/gmock.h" +#include "gtest-extra.h" +#include "util.h" + +using fmt::buffered_file; + +using testing::_; +using testing::Return; +using testing::StrEq; + +template <typename Mock> struct scoped_mock : testing::StrictMock<Mock> { + scoped_mock() { Mock::instance = this; } + ~scoped_mock() { Mock::instance = nullptr; } +}; + +namespace { +int open_count; +int close_count; +int dup_count; +int dup2_count; +int fdopen_count; +int read_count; +int write_count; +int pipe_count; +int fopen_count; +int fclose_count; +int fileno_count; +size_t read_nbyte; +size_t write_nbyte; +bool sysconf_error; + +enum { none, max_size, error } fstat_sim; +} // namespace + +#define EMULATE_EINTR(func, error_result) \ + if (func##_count != 0) { \ + if (func##_count++ != 3) { \ + errno = EINTR; \ + return error_result; \ + } \ + } + +#ifndef _MSC_VER +int test::open(const char* path, int oflag, int mode) { + EMULATE_EINTR(open, -1); + return ::open(path, oflag, mode); +} +#else +errno_t test::sopen_s(int* pfh, const char* filename, int oflag, int shflag, + int pmode) { + EMULATE_EINTR(open, EINTR); + return _sopen_s(pfh, filename, oflag, shflag, pmode); +} +#endif + +#ifndef _WIN32 + +long test::sysconf(int name) { + long result = ::sysconf(name); + if (!sysconf_error) return result; + // Simulate an error. + errno = EINVAL; + return -1; +} + +static off_t max_file_size() { return std::numeric_limits<off_t>::max(); } + +int test::fstat(int fd, struct stat* buf) { + int result = ::fstat(fd, buf); + if (fstat_sim == max_size) buf->st_size = max_file_size(); + return result; +} + +#else + +static LONGLONG max_file_size() { return std::numeric_limits<LONGLONG>::max(); } + +DWORD test::GetFileSize(HANDLE hFile, LPDWORD lpFileSizeHigh) { + if (fstat_sim == error) { + SetLastError(ERROR_ACCESS_DENIED); + return INVALID_FILE_SIZE; + } + if (fstat_sim == max_size) { + DWORD max = std::numeric_limits<DWORD>::max(); + *lpFileSizeHigh = max >> 1; + return max; + } + return ::GetFileSize(hFile, lpFileSizeHigh); +} + +#endif + +int test::close(int fildes) { + // Close the file first because close shouldn't be retried. + int result = ::FMT_POSIX(close(fildes)); + EMULATE_EINTR(close, -1); + return result; +} + +int test::dup(int fildes) { + EMULATE_EINTR(dup, -1); + return ::FMT_POSIX(dup(fildes)); +} + +int test::dup2(int fildes, int fildes2) { + EMULATE_EINTR(dup2, -1); + return ::FMT_POSIX(dup2(fildes, fildes2)); +} + +FILE* test::fdopen(int fildes, const char* mode) { + EMULATE_EINTR(fdopen, nullptr); + return ::FMT_POSIX(fdopen(fildes, mode)); +} + +test::ssize_t test::read(int fildes, void* buf, test::size_t nbyte) { + read_nbyte = nbyte; + EMULATE_EINTR(read, -1); + return ::FMT_POSIX(read(fildes, buf, nbyte)); +} + +test::ssize_t test::write(int fildes, const void* buf, test::size_t nbyte) { + write_nbyte = nbyte; + EMULATE_EINTR(write, -1); + return ::FMT_POSIX(write(fildes, buf, nbyte)); +} + +#ifndef _WIN32 +int test::pipe(int fildes[2]) { + EMULATE_EINTR(pipe, -1); + return ::pipe(fildes); +} +#else +int test::pipe(int* pfds, unsigned psize, int textmode) { + EMULATE_EINTR(pipe, -1); + return _pipe(pfds, psize, textmode); +} +#endif + +FILE* test::fopen(const char* filename, const char* mode) { + EMULATE_EINTR(fopen, nullptr); + return ::fopen(filename, mode); +} + +int test::fclose(FILE* stream) { + EMULATE_EINTR(fclose, EOF); + return ::fclose(stream); +} + +int(test::fileno)(FILE* stream) { + EMULATE_EINTR(fileno, -1); +#ifdef fileno + return FMT_POSIX(fileno(stream)); +#else + return ::FMT_POSIX(fileno(stream)); +#endif +} + +#ifndef _WIN32 +# define EXPECT_RETRY(statement, func, message) \ + func##_count = 1; \ + statement; \ + EXPECT_EQ(4, func##_count); \ + func##_count = 0; +# define EXPECT_EQ_POSIX(expected, actual) EXPECT_EQ(expected, actual) +#else +# define EXPECT_RETRY(statement, func, message) \ + func##_count = 1; \ + EXPECT_SYSTEM_ERROR(statement, EINTR, message); \ + func##_count = 0; +# define EXPECT_EQ_POSIX(expected, actual) +#endif + +#if FMT_USE_FCNTL +void write_file(fmt::cstring_view filename, fmt::string_view content) { + fmt::buffered_file f(filename, "w"); + f.print("{}", content); +} + +using fmt::file; + +TEST(os_test, getpagesize) { +# ifdef _WIN32 + SYSTEM_INFO si = {}; + GetSystemInfo(&si); + EXPECT_EQ(si.dwPageSize, fmt::getpagesize()); +# else + EXPECT_EQ(sysconf(_SC_PAGESIZE), fmt::getpagesize()); + sysconf_error = true; + EXPECT_SYSTEM_ERROR(fmt::getpagesize(), EINVAL, + "cannot get memory page size"); + sysconf_error = false; +# endif +} + +TEST(file_test, open_retry) { + write_file("temp", "there must be something here"); + std::unique_ptr<file> f{nullptr}; + EXPECT_RETRY(f.reset(new file("temp", file::RDONLY)), open, + "cannot open file temp"); +# ifndef _WIN32 + char c = 0; + f->read(&c, 1); +# endif +} + +TEST(file_test, close_no_retry_in_dtor) { + file read_end, write_end; + file::pipe(read_end, write_end); + std::unique_ptr<file> f(new file(std::move(read_end))); + int saved_close_count = 0; + EXPECT_WRITE( + stderr, + { + close_count = 1; + f.reset(nullptr); + saved_close_count = close_count; + close_count = 0; + }, + system_error_message(EINTR, "cannot close file") + "\n"); + EXPECT_EQ(2, saved_close_count); +} + +TEST(file_test, close_no_retry) { + file read_end, write_end; + file::pipe(read_end, write_end); + close_count = 1; + EXPECT_SYSTEM_ERROR(read_end.close(), EINTR, "cannot close file"); + EXPECT_EQ(2, close_count); + close_count = 0; +} + +TEST(file_test, size) { + std::string content = "top secret, destroy before reading"; + write_file("temp", content); + file f("temp", file::RDONLY); + EXPECT_GE(f.size(), 0); + EXPECT_EQ(content.size(), static_cast<unsigned long long>(f.size())); +# ifdef _WIN32 + auto error_code = std::error_code(); + fstat_sim = error; + try { + f.size(); + } catch (const std::system_error& e) { + error_code = e.code(); + } + fstat_sim = none; + EXPECT_EQ(error_code, + std::error_code(ERROR_ACCESS_DENIED, fmt::system_category())); +# else + f.close(); + EXPECT_SYSTEM_ERROR(f.size(), EBADF, "cannot get file attributes"); +# endif +} + +TEST(file_test, max_size) { + write_file("temp", ""); + file f("temp", file::RDONLY); + fstat_sim = max_size; + EXPECT_GE(f.size(), 0); + EXPECT_EQ(max_file_size(), f.size()); + fstat_sim = none; +} + +TEST(file_test, read_retry) { + file read_end, write_end; + file::pipe(read_end, write_end); + enum { SIZE = 4 }; + write_end.write("test", SIZE); + write_end.close(); + char buffer[SIZE]; + size_t count = 0; + EXPECT_RETRY(count = read_end.read(buffer, SIZE), read, + "cannot read from file"); + EXPECT_EQ_POSIX(static_cast<std::streamsize>(SIZE), count); +} + +TEST(file_test, write_retry) { + file read_end, write_end; + file::pipe(read_end, write_end); + enum { SIZE = 4 }; + size_t count = 0; + EXPECT_RETRY(count = write_end.write("test", SIZE), write, + "cannot write to file"); + write_end.close(); +# ifndef _WIN32 + EXPECT_EQ(static_cast<std::streamsize>(SIZE), count); + char buffer[SIZE + 1]; + read_end.read(buffer, SIZE); + buffer[SIZE] = '\0'; + EXPECT_STREQ("test", buffer); +# endif +} + +# ifdef _WIN32 +TEST(file_test, convert_read_count) { + file read_end, write_end; + file::pipe(read_end, write_end); + char c; + size_t size = UINT_MAX; + if (sizeof(unsigned) != sizeof(size_t)) ++size; + read_count = 1; + read_nbyte = 0; + EXPECT_THROW(read_end.read(&c, size), std::system_error); + read_count = 0; + EXPECT_EQ(UINT_MAX, read_nbyte); +} + +TEST(file_test, convert_write_count) { + file read_end, write_end; + file::pipe(read_end, write_end); + char c; + size_t size = UINT_MAX; + if (sizeof(unsigned) != sizeof(size_t)) ++size; + write_count = 1; + write_nbyte = 0; + EXPECT_THROW(write_end.write(&c, size), std::system_error); + write_count = 0; + EXPECT_EQ(UINT_MAX, write_nbyte); +} +# endif + +TEST(file_test, dup_no_retry) { + int stdout_fd = FMT_POSIX(fileno(stdout)); + dup_count = 1; + EXPECT_SYSTEM_ERROR( + file::dup(stdout_fd), EINTR, + fmt::format("cannot duplicate file descriptor {}", stdout_fd)); + dup_count = 0; +} + +TEST(file_test, dup2_retry) { + int stdout_fd = FMT_POSIX(fileno(stdout)); + file f1 = file::dup(stdout_fd), f2 = file::dup(stdout_fd); + EXPECT_RETRY(f1.dup2(f2.descriptor()), dup2, + fmt::format("cannot duplicate file descriptor {} to {}", + f1.descriptor(), f2.descriptor())); +} + +TEST(file_test, dup2_no_except_retry) { + int stdout_fd = FMT_POSIX(fileno(stdout)); + file f1 = file::dup(stdout_fd), f2 = file::dup(stdout_fd); + std::error_code ec; + dup2_count = 1; + f1.dup2(f2.descriptor(), ec); +# ifndef _WIN32 + EXPECT_EQ(4, dup2_count); +# else + EXPECT_EQ(EINTR, ec.value()); +# endif + dup2_count = 0; +} + +TEST(file_test, pipe_no_retry) { + file read_end, write_end; + pipe_count = 1; + EXPECT_SYSTEM_ERROR(file::pipe(read_end, write_end), EINTR, + "cannot create pipe"); + pipe_count = 0; +} + +TEST(file_test, fdopen_no_retry) { + file read_end, write_end; + file::pipe(read_end, write_end); + fdopen_count = 1; + EXPECT_SYSTEM_ERROR(read_end.fdopen("r"), EINTR, + "cannot associate stream with file descriptor"); + fdopen_count = 0; +} + +TEST(buffered_file_test, open_retry) { + write_file("temp", "there must be something here"); + std::unique_ptr<buffered_file> f{nullptr}; + EXPECT_RETRY(f.reset(new buffered_file("temp", "r")), fopen, + "cannot open file temp"); +# ifndef _WIN32 + char c = 0; + if (fread(&c, 1, 1, f->get()) < 1) + throw fmt::system_error(errno, "fread failed"); +# endif +} + +TEST(buffered_file_test, close_no_retry_in_dtor) { + file read_end, write_end; + file::pipe(read_end, write_end); + std::unique_ptr<buffered_file> f(new buffered_file(read_end.fdopen("r"))); + int saved_fclose_count = 0; + EXPECT_WRITE( + stderr, + { + fclose_count = 1; + f.reset(nullptr); + saved_fclose_count = fclose_count; + fclose_count = 0; + }, + system_error_message(EINTR, "cannot close file") + "\n"); + EXPECT_EQ(2, saved_fclose_count); +} + +TEST(buffered_file_test, close_no_retry) { + file read_end, write_end; + file::pipe(read_end, write_end); + buffered_file f = read_end.fdopen("r"); + fclose_count = 1; + EXPECT_SYSTEM_ERROR(f.close(), EINTR, "cannot close file"); + EXPECT_EQ(2, fclose_count); + fclose_count = 0; +} + +TEST(buffered_file_test, fileno_no_retry) { + file read_end, write_end; + file::pipe(read_end, write_end); + buffered_file f = read_end.fdopen("r"); + fileno_count = 1; + EXPECT_SYSTEM_ERROR((f.descriptor)(), EINTR, "cannot get file descriptor"); + EXPECT_EQ(2, fileno_count); + fileno_count = 0; +} +#endif // FMT_USE_FCNTL + +struct test_mock { + static test_mock* instance; +} * test_mock::instance; + +TEST(scoped_mock, scope) { + { + scoped_mock<test_mock> mock; + EXPECT_EQ(&mock, test_mock::instance); + test_mock& copy = mock; + static_cast<void>(copy); + } + EXPECT_EQ(nullptr, test_mock::instance); +} |