1 files changed, 539 insertions, 0 deletions
diff --git a/src/seastar/fmt/test/posix-mock-test.cc b/src/seastar/fmt/test/posix-mock-test.cc
new file mode 100644
index 00000000..8b0e14e1
--- /dev/null
+++ b/src/seastar/fmt/test/posix-mock-test.cc
@@ -0,0 +1,539 @@
+// 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.
+#ifdef _MSC_VER
+# define _CRT_SECURE_NO_WARNINGS
+#endif
+
+#include "posix-mock.h"
+#include "../src/posix.cc"
+
+#include <errno.h>
+#include <fcntl.h>
+#include <climits>
+
+#ifdef _WIN32
+# include <io.h>
+# undef max
+# undef ERROR
+#endif
+
+#include "gmock.h"
+#include "gtest-extra.h"
+#include "util.h"
+
+using fmt::buffered_file;
+using fmt::error_code;
+using fmt::file;
+
+using testing::internal::scoped_ptr;
+using testing::_;
+using testing::StrEq;
+using testing::Return;
+
+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;
+std::size_t read_nbyte;
+std::size_t write_nbyte;
+bool sysconf_error;
+
+enum FStatSimulation { NONE, MAX_SIZE, ERROR } fstat_sim;
+}
+
+#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, FMT_NULL);
+  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, FMT_NULL);
+  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
+
+static void write_file(fmt::cstring_view filename, fmt::string_view content) {
+  fmt::buffered_file f(filename, "w");
+  f.print("{}", content);
+}
+
+TEST(UtilTest, 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(FileTest, OpenRetry) {
+  write_file("test", "there must be something here");
+  scoped_ptr<file> f{FMT_NULL};
+  EXPECT_RETRY(f.reset(new file("test", file::RDONLY)),
+               open, "cannot open file test");
+#ifndef _WIN32
+  char c = 0;
+  f->read(&c, 1);
+#endif
+}
+
+TEST(FileTest, CloseNoRetryInDtor) {
+  file read_end, write_end;
+  file::pipe(read_end, write_end);
+  scoped_ptr<file> f(new file(std::move(read_end)));
+  int saved_close_count = 0;
+  EXPECT_WRITE(stderr, {
+    close_count = 1;
+    f.reset(FMT_NULL);
+    saved_close_count = close_count;
+    close_count = 0;
+  }, format_system_error(EINTR, "cannot close file") + "\n");
+  EXPECT_EQ(2, saved_close_count);
+}
+
+TEST(FileTest, CloseNoRetry) {
+  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(FileTest, Size) {
+  std::string content = "top secret, destroy before reading";
+  write_file("test", content);
+  file f("test", file::RDONLY);
+  EXPECT_GE(f.size(), 0);
+  EXPECT_EQ(content.size(), static_cast<unsigned long long>(f.size()));
+#ifdef _WIN32
+  fmt::memory_buffer message;
+  fmt::internal::format_windows_error(
+      message, ERROR_ACCESS_DENIED, "cannot get file size");
+  fstat_sim = ERROR;
+  EXPECT_THROW_MSG(f.size(), fmt::windows_error, fmt::to_string(message));
+  fstat_sim = NONE;
+#else
+  f.close();
+  EXPECT_SYSTEM_ERROR(f.size(), EBADF, "cannot get file attributes");
+#endif
+}
+
+TEST(FileTest, MaxSize) {
+  write_file("test", "");
+  file f("test", file::RDONLY);
+  fstat_sim = MAX_SIZE;
+  EXPECT_GE(f.size(), 0);
+  EXPECT_EQ(max_file_size(), f.size());
+  fstat_sim = NONE;
+}
+
+TEST(FileTest, ReadRetry) {
+  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];
+  std::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(FileTest, WriteRetry) {
+  file read_end, write_end;
+  file::pipe(read_end, write_end);
+  enum { SIZE = 4 };
+  std::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(FileTest, ConvertReadCount) {
+  file read_end, write_end;
+  file::pipe(read_end, write_end);
+  char c;
+  std::size_t size = UINT_MAX;
+  if (sizeof(unsigned) != sizeof(std::size_t))
+    ++size;
+  read_count = 1;
+  read_nbyte = 0;
+  EXPECT_THROW(read_end.read(&c, size), fmt::system_error);
+  read_count = 0;
+  EXPECT_EQ(UINT_MAX, read_nbyte);
+}
+
+TEST(FileTest, ConvertWriteCount) {
+  file read_end, write_end;
+  file::pipe(read_end, write_end);
+  char c;
+  std::size_t size = UINT_MAX;
+  if (sizeof(unsigned) != sizeof(std::size_t))
+    ++size;
+  write_count = 1;
+  write_nbyte = 0;
+  EXPECT_THROW(write_end.write(&c, size), fmt::system_error);
+  write_count = 0;
+  EXPECT_EQ(UINT_MAX, write_nbyte);
+}
+#endif
+
+TEST(FileTest, DupNoRetry) {
+  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(FileTest, Dup2Retry) {
+  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(FileTest, Dup2NoExceptRetry) {
+  int stdout_fd = FMT_POSIX(fileno(stdout));
+  file f1 = file::dup(stdout_fd), f2 = file::dup(stdout_fd);
+  error_code ec;
+  dup2_count = 1;
+  f1.dup2(f2.descriptor(), ec);
+#ifndef _WIN32
+  EXPECT_EQ(4, dup2_count);
+#else
+  EXPECT_EQ(EINTR, ec.get());
+#endif
+  dup2_count = 0;
+}
+
+TEST(FileTest, PipeNoRetry) {
+  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(FileTest, FdopenNoRetry) {
+  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(BufferedFileTest, OpenRetry) {
+  write_file("test", "there must be something here");
+  scoped_ptr<buffered_file> f{FMT_NULL};
+  EXPECT_RETRY(f.reset(new buffered_file("test", "r")),
+               fopen, "cannot open file test");
+#ifndef _WIN32
+  char c = 0;
+  if (fread(&c, 1, 1, f->get()) < 1)
+    throw fmt::system_error(errno, "fread failed");
+#endif
+}
+
+TEST(BufferedFileTest, CloseNoRetryInDtor) {
+  file read_end, write_end;
+  file::pipe(read_end, write_end);
+  scoped_ptr<buffered_file> f(new buffered_file(read_end.fdopen("r")));
+  int saved_fclose_count = 0;
+  EXPECT_WRITE(stderr, {
+    fclose_count = 1;
+    f.reset(FMT_NULL);
+    saved_fclose_count = fclose_count;
+    fclose_count = 0;
+  }, format_system_error(EINTR, "cannot close file") + "\n");
+  EXPECT_EQ(2, saved_fclose_count);
+}
+
+TEST(BufferedFileTest, CloseNoRetry) {
+  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(BufferedFileTest, FilenoNoRetry) {
+  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.fileno)(), EINTR, "cannot get file descriptor");
+  EXPECT_EQ(2, fileno_count);
+  fileno_count = 0;
+}
+
+struct TestMock {
+  static TestMock *instance;
+} *TestMock::instance;
+
+TEST(ScopedMock, Scope) {
+  {
+    ScopedMock<TestMock> mock;
+    EXPECT_EQ(&mock, TestMock::instance);
+    TestMock &copy = mock;
+    static_cast<void>(copy);
+  }
+  EXPECT_EQ(FMT_NULL, TestMock::instance);
+}
+
+#ifdef FMT_LOCALE
+
+typedef fmt::Locale::Type LocaleType;
+
+struct LocaleMock {
+  static LocaleMock *instance;
+  MOCK_METHOD3(newlocale, LocaleType (int category_mask, const char *locale,
+                                      LocaleType base));
+  MOCK_METHOD1(freelocale, void (LocaleType locale));
+
+  MOCK_METHOD3(strtod_l, double (const char *nptr, char **endptr,
+                                 LocaleType locale));
+} *LocaleMock::instance;
+
+#ifdef _MSC_VER
+# pragma warning(push)
+# pragma warning(disable: 4273)
+
+_locale_t _create_locale(int category, const char *locale) {
+  return LocaleMock::instance->newlocale(category, locale, 0);
+}
+
+void _free_locale(_locale_t locale) {
+  LocaleMock::instance->freelocale(locale);
+}
+
+double _strtod_l(const char *nptr, char **endptr, _locale_t locale) {
+  return LocaleMock::instance->strtod_l(nptr, endptr, locale);
+}
+# pragma warning(pop)
+#endif
+
+#if defined(__THROW) && FMT_GCC_VERSION > 0 && FMT_GCC_VERSION <= 408
+#define FMT_LOCALE_THROW __THROW
+#else
+#define FMT_LOCALE_THROW
+#endif
+
+LocaleType newlocale(int category_mask, const char *locale, LocaleType base) FMT_LOCALE_THROW {
+  return LocaleMock::instance->newlocale(category_mask, locale, base);
+}
+
+#if defined(__APPLE__) || (defined(__FreeBSD__) && __FreeBSD_version < 1200002)
+typedef int FreeLocaleResult;
+#else
+typedef void FreeLocaleResult;
+#endif
+
+FreeLocaleResult freelocale(LocaleType locale) FMT_LOCALE_THROW {
+  LocaleMock::instance->freelocale(locale);
+  return FreeLocaleResult();
+}
+
+double strtod_l(const char *nptr, char **endptr, LocaleType locale) FMT_LOCALE_THROW {
+  return LocaleMock::instance->strtod_l(nptr, endptr, locale);
+}
+
+#undef FMT_LOCALE_THROW
+
+TEST(LocaleTest, LocaleMock) {
+  ScopedMock<LocaleMock> mock;
+  LocaleType locale = reinterpret_cast<LocaleType>(11);
+  EXPECT_CALL(mock, newlocale(222, StrEq("foo"), locale));
+  newlocale(222, "foo", locale);
+}
+
+TEST(LocaleTest, Locale) {
+#ifndef LC_NUMERIC_MASK
+  enum { LC_NUMERIC_MASK = LC_NUMERIC };
+#endif
+  ScopedMock<LocaleMock> mock;
+  LocaleType impl = reinterpret_cast<LocaleType>(42);
+  EXPECT_CALL(mock, newlocale(LC_NUMERIC_MASK, StrEq("C"), FMT_NULL))
+      .WillOnce(Return(impl));
+  EXPECT_CALL(mock, freelocale(impl));
+  fmt::Locale locale;
+  EXPECT_EQ(impl, locale.get());
+}
+
+TEST(LocaleTest, Strtod) {
+  ScopedMock<LocaleMock> mock;
+  EXPECT_CALL(mock, newlocale(_, _, _))
+      .WillOnce(Return(reinterpret_cast<LocaleType>(42)));
+  EXPECT_CALL(mock, freelocale(_));
+  fmt::Locale locale;
+  const char *str = "4.2";
+  char end = 'x';
+  EXPECT_CALL(mock, strtod_l(str, _, locale.get()))
+      .WillOnce(testing::DoAll(testing::SetArgPointee<1>(&end), Return(777)));
+  EXPECT_EQ(777, locale.strtod(str));
+  EXPECT_EQ(&end, str);
+}
+
+#endif  // FMT_LOCALE