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Diffstat (limited to 'src/gtest/gtest-death-test.cc')
| -rw-r--r-- | src/gtest/gtest-death-test.cc | 751 |
1 files changed, 0 insertions, 751 deletions
diff --git a/src/gtest/gtest-death-test.cc b/src/gtest/gtest-death-test.cc deleted file mode 100644 index 09fdd3ff..00000000 --- a/src/gtest/gtest-death-test.cc +++ /dev/null @@ -1,751 +0,0 @@ -// Copyright 2005, Google Inc. -// All rights reserved. -// -// Redistribution and use in source and binary forms, with or without -// modification, are permitted provided that the following conditions are -// met: -// -// * Redistributions of source code must retain the above copyright -// notice, this list of conditions and the following disclaimer. -// * Redistributions in binary form must reproduce the above -// copyright notice, this list of conditions and the following disclaimer -// in the documentation and/or other materials provided with the -// distribution. -// * Neither the name of Google Inc. nor the names of its -// contributors may be used to endorse or promote products derived from -// this software without specific prior written permission. -// -// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -// -// Author: wan@google.com (Zhanyong Wan) -// -// This file implements death tests. - -#include <gtest/gtest-death-test.h> -#include <gtest/internal/gtest-port.h> - -#include <errno.h> -#include <limits.h> -#include <stdarg.h> - -#include <gtest/gtest-message.h> -#include <gtest/internal/gtest-string.h> - -// Indicates that this translation unit is part of Google Test's -// implementation. It must come before gtest-internal-inl.h is -// included, or there will be a compiler error. This trick is to -// prevent a user from accidentally including gtest-internal-inl.h in -// his code. -#define GTEST_IMPLEMENTATION -#include "gtest-internal-inl.h" -#undef GTEST_IMPLEMENTATION - -namespace testing { - -// Constants. - -// The default death test style. -static const char kDefaultDeathTestStyle[] = "fast"; - -GTEST_DEFINE_string( - death_test_style, - internal::StringFromGTestEnv("death_test_style", kDefaultDeathTestStyle), - "Indicates how to run a death test in a forked child process: " - "\"threadsafe\" (child process re-executes the test binary " - "from the beginning, running only the specific death test) or " - "\"fast\" (child process runs the death test immediately " - "after forking)."); - -namespace internal { -GTEST_DEFINE_string( - internal_run_death_test, "", - "Indicates the file, line number, temporal index of " - "the single death test to run, and a file descriptor to " - "which a success code may be sent, all separated by " - "colons. This flag is specified if and only if the current " - "process is a sub-process launched for running a thread-safe " - "death test. FOR INTERNAL USE ONLY."); -} // namespace internal - -#ifdef GTEST_HAS_DEATH_TEST - -// ExitedWithCode constructor. -ExitedWithCode::ExitedWithCode(int exit_code) : exit_code_(exit_code) { -} - -// ExitedWithCode function-call operator. -bool ExitedWithCode::operator()(int exit_status) const { - return WIFEXITED(exit_status) && WEXITSTATUS(exit_status) == exit_code_; -} - -// KilledBySignal constructor. -KilledBySignal::KilledBySignal(int signum) : signum_(signum) { -} - -// KilledBySignal function-call operator. -bool KilledBySignal::operator()(int exit_status) const { - return WIFSIGNALED(exit_status) && WTERMSIG(exit_status) == signum_; -} - -namespace internal { - -// Utilities needed for death tests. - -// Generates a textual description of a given exit code, in the format -// specified by wait(2). -static String ExitSummary(int exit_code) { - Message m; - if (WIFEXITED(exit_code)) { - m << "Exited with exit status " << WEXITSTATUS(exit_code); - } else if (WIFSIGNALED(exit_code)) { - m << "Terminated by signal " << WTERMSIG(exit_code); - } -#ifdef WCOREDUMP - if (WCOREDUMP(exit_code)) { - m << " (core dumped)"; - } -#endif - return m.GetString(); -} - -// Returns true if exit_status describes a process that was terminated -// by a signal, or exited normally with a nonzero exit code. -bool ExitedUnsuccessfully(int exit_status) { - return !ExitedWithCode(0)(exit_status); -} - -// Generates a textual failure message when a death test finds more than -// one thread running, or cannot determine the number of threads, prior -// to executing the given statement. It is the responsibility of the -// caller not to pass a thread_count of 1. -static String DeathTestThreadWarning(size_t thread_count) { - Message msg; - msg << "Death tests use fork(), which is unsafe particularly" - << " in a threaded context. For this test, " << GTEST_NAME << " "; - if (thread_count == 0) - msg << "couldn't detect the number of threads."; - else - msg << "detected " << thread_count << " threads."; - return msg.GetString(); -} - -// Static string containing a description of the outcome of the -// last death test. -static String last_death_test_message; - -// Flag characters for reporting a death test that did not die. -static const char kDeathTestLived = 'L'; -static const char kDeathTestReturned = 'R'; -static const char kDeathTestInternalError = 'I'; - -// An enumeration describing all of the possible ways that a death test -// can conclude. DIED means that the process died while executing the -// test code; LIVED means that process lived beyond the end of the test -// code; and RETURNED means that the test statement attempted a "return," -// which is not allowed. IN_PROGRESS means the test has not yet -// concluded. -enum DeathTestOutcome { IN_PROGRESS, DIED, LIVED, RETURNED }; - -// Routine for aborting the program which is safe to call from an -// exec-style death test child process, in which case the the error -// message is propagated back to the parent process. Otherwise, the -// message is simply printed to stderr. In either case, the program -// then exits with status 1. -void DeathTestAbort(const char* format, ...) { - // This function may be called from a threadsafe-style death test - // child process, which operates on a very small stack. Use the - // heap for any additional non-miniscule memory requirements. - const InternalRunDeathTestFlag* const flag = - GetUnitTestImpl()->internal_run_death_test_flag(); - va_list args; - va_start(args, format); - - if (flag != NULL) { - FILE* parent = fdopen(flag->status_fd, "w"); - fputc(kDeathTestInternalError, parent); - vfprintf(parent, format, args); - fclose(parent); - va_end(args); - _exit(1); - } else { - vfprintf(stderr, format, args); - va_end(args); - abort(); - } -} - -// A replacement for CHECK that calls DeathTestAbort if the assertion -// fails. -#define GTEST_DEATH_TEST_CHECK(expression) \ - do { \ - if (!(expression)) { \ - DeathTestAbort("CHECK failed: File %s, line %d: %s", \ - __FILE__, __LINE__, #expression); \ - } \ - } while (0) - -// This macro is similar to GTEST_DEATH_TEST_CHECK, but it is meant for -// evaluating any system call that fulfills two conditions: it must return -// -1 on failure, and set errno to EINTR when it is interrupted and -// should be tried again. The macro expands to a loop that repeatedly -// evaluates the expression as long as it evaluates to -1 and sets -// errno to EINTR. If the expression evaluates to -1 but errno is -// something other than EINTR, DeathTestAbort is called. -#define GTEST_DEATH_TEST_CHECK_SYSCALL(expression) \ - do { \ - int retval; \ - do { \ - retval = (expression); \ - } while (retval == -1 && errno == EINTR); \ - if (retval == -1) { \ - DeathTestAbort("CHECK failed: File %s, line %d: %s != -1", \ - __FILE__, __LINE__, #expression); \ - } \ - } while (0) - -// Death test constructor. Increments the running death test count -// for the current test. -DeathTest::DeathTest() { - TestInfo* const info = GetUnitTestImpl()->current_test_info(); - if (info == NULL) { - DeathTestAbort("Cannot run a death test outside of a TEST or " - "TEST_F construct"); - } -} - -// Creates and returns a death test by dispatching to the current -// death test factory. -bool DeathTest::Create(const char* statement, const RE* regex, - const char* file, int line, DeathTest** test) { - return GetUnitTestImpl()->death_test_factory()->Create( - statement, regex, file, line, test); -} - -const char* DeathTest::LastMessage() { - return last_death_test_message.c_str(); -} - -// ForkingDeathTest provides implementations for most of the abstract -// methods of the DeathTest interface. Only the AssumeRole method is -// left undefined. -class ForkingDeathTest : public DeathTest { - public: - ForkingDeathTest(const char* statement, const RE* regex); - - // All of these virtual functions are inherited from DeathTest. - virtual int Wait(); - virtual bool Passed(bool status_ok); - virtual void Abort(AbortReason reason); - - protected: - void set_forked(bool forked) { forked_ = forked; } - void set_child_pid(pid_t child_pid) { child_pid_ = child_pid; } - void set_read_fd(int fd) { read_fd_ = fd; } - void set_write_fd(int fd) { write_fd_ = fd; } - - private: - // The textual content of the code this object is testing. - const char* const statement_; - // The regular expression which test output must match. - const RE* const regex_; - // True if the death test successfully forked. - bool forked_; - // PID of child process during death test; 0 in the child process itself. - pid_t child_pid_; - // File descriptors for communicating the death test's status byte. - int read_fd_; // Always -1 in the child process. - int write_fd_; // Always -1 in the parent process. - // The exit status of the child process. - int status_; - // How the death test concluded. - DeathTestOutcome outcome_; -}; - -// Constructs a ForkingDeathTest. -ForkingDeathTest::ForkingDeathTest(const char* statement, const RE* regex) - : DeathTest(), - statement_(statement), - regex_(regex), - forked_(false), - child_pid_(-1), - read_fd_(-1), - write_fd_(-1), - status_(-1), - outcome_(IN_PROGRESS) { -} - -// Reads an internal failure message from a file descriptor, then calls -// LOG(FATAL) with that message. Called from a death test parent process -// to read a failure message from the death test child process. -static void FailFromInternalError(int fd) { - Message error; - char buffer[256]; - ssize_t num_read; - - do { - while ((num_read = read(fd, buffer, 255)) > 0) { - buffer[num_read] = '\0'; - error << buffer; - } - } while (num_read == -1 && errno == EINTR); - - // TODO(smcafee): Maybe just FAIL the test instead? - if (num_read == 0) { - GTEST_LOG(FATAL, error); - } else { - GTEST_LOG(FATAL, - Message() << "Error while reading death test internal: " - << strerror(errno) << " [" << errno << "]"); - } -} - -// Waits for the child in a death test to exit, returning its exit -// status, or 0 if no child process exists. As a side effect, sets the -// outcome data member. -int ForkingDeathTest::Wait() { - if (!forked_) - return 0; - - // The read() here blocks until data is available (signifying the - // failure of the death test) or until the pipe is closed (signifying - // its success), so it's okay to call this in the parent before - // the child process has exited. - char flag; - ssize_t bytes_read; - - do { - bytes_read = read(read_fd_, &flag, 1); - } while (bytes_read == -1 && errno == EINTR); - - if (bytes_read == 0) { - outcome_ = DIED; - } else if (bytes_read == 1) { - switch (flag) { - case kDeathTestReturned: - outcome_ = RETURNED; - break; - case kDeathTestLived: - outcome_ = LIVED; - break; - case kDeathTestInternalError: - FailFromInternalError(read_fd_); // Does not return. - break; - default: - GTEST_LOG(FATAL, - Message() << "Death test child process reported unexpected " - << "status byte (" << static_cast<unsigned int>(flag) - << ")"); - } - } else { - GTEST_LOG(FATAL, - Message() << "Read from death test child process failed: " - << strerror(errno)); - } - - GTEST_DEATH_TEST_CHECK_SYSCALL(close(read_fd_)); - GTEST_DEATH_TEST_CHECK_SYSCALL(waitpid(child_pid_, &status_, 0)); - return status_; -} - -// Assesses the success or failure of a death test, using both private -// members which have previously been set, and one argument: -// -// Private data members: -// outcome: an enumeration describing how the death test -// concluded: DIED, LIVED, or RETURNED. The death test fails -// in the latter two cases -// status: the exit status of the child process, in the format -// specified by wait(2) -// regex: a regular expression object to be applied to -// the test's captured standard error output; the death test -// fails if it does not match -// -// Argument: -// status_ok: true if exit_status is acceptable in the context of -// this particular death test, which fails if it is false -// -// Returns true iff all of the above conditions are met. Otherwise, the -// first failing condition, in the order given above, is the one that is -// reported. Also sets the static variable last_death_test_message. -bool ForkingDeathTest::Passed(bool status_ok) { - if (!forked_) - return false; - -#if GTEST_HAS_GLOBAL_STRING - const ::string error_message = GetCapturedStderr(); -#else - const ::std::string error_message = GetCapturedStderr(); -#endif // GTEST_HAS_GLOBAL_STRING - - bool success = false; - Message buffer; - - buffer << "Death test: " << statement_ << "\n"; - switch (outcome_) { - case LIVED: - buffer << " Result: failed to die.\n" - << " Error msg: " << error_message; - break; - case RETURNED: - buffer << " Result: illegal return in test statement.\n" - << " Error msg: " << error_message; - break; - case DIED: - if (status_ok) { - if (RE::PartialMatch(error_message, *regex_)) { - success = true; - } else { - buffer << " Result: died but not with expected error.\n" - << " Expected: " << regex_->pattern() << "\n" - << "Actual msg: " << error_message; - } - } else { - buffer << " Result: died but not with expected exit code:\n" - << " " << ExitSummary(status_) << "\n"; - } - break; - default: - GTEST_LOG(FATAL, - "DeathTest::Passed somehow called before conclusion of test"); - } - - last_death_test_message = buffer.GetString(); - return success; -} - -// Signals that the death test code which should have exited, didn't. -// Should be called only in a death test child process. -// Writes a status byte to the child's status file desriptor, then -// calls _exit(1). -void ForkingDeathTest::Abort(AbortReason reason) { - // The parent process considers the death test to be a failure if - // it finds any data in our pipe. So, here we write a single flag byte - // to the pipe, then exit. - const char flag = - reason == TEST_DID_NOT_DIE ? kDeathTestLived : kDeathTestReturned; - GTEST_DEATH_TEST_CHECK_SYSCALL(write(write_fd_, &flag, 1)); - GTEST_DEATH_TEST_CHECK_SYSCALL(close(write_fd_)); - _exit(1); // Exits w/o any normal exit hooks (we were supposed to crash) -} - -// A concrete death test class that forks, then immediately runs the test -// in the child process. -class NoExecDeathTest : public ForkingDeathTest { - public: - NoExecDeathTest(const char* statement, const RE* regex) : - ForkingDeathTest(statement, regex) { } - virtual TestRole AssumeRole(); -}; - -// The AssumeRole process for a fork-and-run death test. It implements a -// straightforward fork, with a simple pipe to transmit the status byte. -DeathTest::TestRole NoExecDeathTest::AssumeRole() { - const size_t thread_count = GetThreadCount(); - if (thread_count != 1) { - GTEST_LOG(WARNING, DeathTestThreadWarning(thread_count)); - } - - int pipe_fd[2]; - GTEST_DEATH_TEST_CHECK(pipe(pipe_fd) != -1); - - last_death_test_message = ""; - CaptureStderr(); - // When we fork the process below, the log file buffers are copied, but the - // file descriptors are shared. We flush all log files here so that closing - // the file descriptors in the child process doesn't throw off the - // synchronization between descriptors and buffers in the parent process. - // This is as close to the fork as possible to avoid a race condition in case - // there are multiple threads running before the death test, and another - // thread writes to the log file. - FlushInfoLog(); - - const pid_t child_pid = fork(); - GTEST_DEATH_TEST_CHECK(child_pid != -1); - set_child_pid(child_pid); - if (child_pid == 0) { - GTEST_DEATH_TEST_CHECK_SYSCALL(close(pipe_fd[0])); - set_write_fd(pipe_fd[1]); - // Redirects all logging to stderr in the child process to prevent - // concurrent writes to the log files. We capture stderr in the parent - // process and append the child process' output to a log. - LogToStderr(); - return EXECUTE_TEST; - } else { - GTEST_DEATH_TEST_CHECK_SYSCALL(close(pipe_fd[1])); - set_read_fd(pipe_fd[0]); - set_forked(true); - return OVERSEE_TEST; - } -} - -// A concrete death test class that forks and re-executes the main -// program from the beginning, with command-line flags set that cause -// only this specific death test to be run. -class ExecDeathTest : public ForkingDeathTest { - public: - ExecDeathTest(const char* statement, const RE* regex, - const char* file, int line) : - ForkingDeathTest(statement, regex), file_(file), line_(line) { } - virtual TestRole AssumeRole(); - private: - // The name of the file in which the death test is located. - const char* const file_; - // The line number on which the death test is located. - const int line_; -}; - -// Utility class for accumulating command-line arguments. -class Arguments { - public: - Arguments() { - args_.push_back(NULL); - } - ~Arguments() { - for (std::vector<char*>::iterator i = args_.begin(); - i + 1 != args_.end(); - ++i) { - free(*i); - } - } - void AddArgument(const char* argument) { - args_.insert(args_.end() - 1, strdup(argument)); - } - - template <typename Str> - void AddArguments(const ::std::vector<Str>& arguments) { - for (typename ::std::vector<Str>::const_iterator i = arguments.begin(); - i != arguments.end(); - ++i) { - args_.insert(args_.end() - 1, strdup(i->c_str())); - } - } - char* const* Argv() { - return &args_[0]; - } - private: - std::vector<char*> args_; -}; - -// A struct that encompasses the arguments to the child process of a -// threadsafe-style death test process. -struct ExecDeathTestArgs { - char* const* argv; // Command-line arguments for the child's call to exec - int close_fd; // File descriptor to close; the read end of a pipe -}; - -// The main function for a threadsafe-style death test child process. -static int ExecDeathTestChildMain(void* child_arg) { - ExecDeathTestArgs* const args = static_cast<ExecDeathTestArgs*>(child_arg); - GTEST_DEATH_TEST_CHECK_SYSCALL(close(args->close_fd)); - execve(args->argv[0], args->argv, environ); - DeathTestAbort("execve failed: %s", strerror(errno)); - return EXIT_FAILURE; -} - -// Two utility routines that together determine the direction the stack -// grows. -// This could be accomplished more elegantly by a single recursive -// function, but we want to guard against the unlikely possibility of -// a smart compiler optimizing the recursion away. -static bool StackLowerThanAddress(const void* ptr) { - int dummy; - return &dummy < ptr; -} - -static bool StackGrowsDown() { - int dummy; - return StackLowerThanAddress(&dummy); -} - -// A threadsafe implementation of fork(2) for threadsafe-style death tests -// that uses clone(2). It dies with an error message if anything goes -// wrong. -static pid_t ExecDeathTestFork(char* const* argv, int close_fd) { - static const bool stack_grows_down = StackGrowsDown(); - const size_t stack_size = getpagesize(); - void* const stack = mmap(NULL, stack_size, PROT_READ | PROT_WRITE, - MAP_ANONYMOUS | MAP_PRIVATE, -1, 0); - GTEST_DEATH_TEST_CHECK(stack != MAP_FAILED); - void* const stack_top = - static_cast<char*>(stack) + (stack_grows_down ? stack_size : 0); - ExecDeathTestArgs args = { argv, close_fd }; - const pid_t child_pid = clone(&ExecDeathTestChildMain, stack_top, - SIGCHLD, &args); - GTEST_DEATH_TEST_CHECK(child_pid != -1); - GTEST_DEATH_TEST_CHECK(munmap(stack, stack_size) != -1); - return child_pid; -} - -// The AssumeRole process for a fork-and-exec death test. It re-executes the -// main program from the beginning, setting the --gtest_filter -// and --gtest_internal_run_death_test flags to cause only the current -// death test to be re-run. -DeathTest::TestRole ExecDeathTest::AssumeRole() { - const UnitTestImpl* const impl = GetUnitTestImpl(); - const InternalRunDeathTestFlag* const flag = - impl->internal_run_death_test_flag(); - const TestInfo* const info = impl->current_test_info(); - const int death_test_index = info->result()->death_test_count(); - - if (flag != NULL) { - set_write_fd(flag->status_fd); - return EXECUTE_TEST; - } - - int pipe_fd[2]; - GTEST_DEATH_TEST_CHECK(pipe(pipe_fd) != -1); - // Clear the close-on-exec flag on the write end of the pipe, lest - // it be closed when the child process does an exec: - GTEST_DEATH_TEST_CHECK(fcntl(pipe_fd[1], F_SETFD, 0) != -1); - - const String filter_flag = - String::Format("--%s%s=%s.%s", - GTEST_FLAG_PREFIX, kFilterFlag, - info->test_case_name(), info->name()); - const String internal_flag = - String::Format("--%s%s=%s:%d:%d:%d", - GTEST_FLAG_PREFIX, kInternalRunDeathTestFlag, file_, line_, - death_test_index, pipe_fd[1]); - Arguments args; - args.AddArguments(GetArgvs()); - args.AddArgument("--logtostderr"); - args.AddArgument(filter_flag.c_str()); - args.AddArgument(internal_flag.c_str()); - - last_death_test_message = ""; - - CaptureStderr(); - // See the comment in NoExecDeathTest::AssumeRole for why the next line - // is necessary. - FlushInfoLog(); - - const pid_t child_pid = ExecDeathTestFork(args.Argv(), pipe_fd[0]); - GTEST_DEATH_TEST_CHECK_SYSCALL(close(pipe_fd[1])); - set_child_pid(child_pid); - set_read_fd(pipe_fd[0]); - set_forked(true); - return OVERSEE_TEST; -} - -// Creates a concrete DeathTest-derived class that depends on the -// --gtest_death_test_style flag, and sets the pointer pointed to -// by the "test" argument to its address. If the test should be -// skipped, sets that pointer to NULL. Returns true, unless the -// flag is set to an invalid value. -bool DefaultDeathTestFactory::Create(const char* statement, const RE* regex, - const char* file, int line, - DeathTest** test) { - UnitTestImpl* const impl = GetUnitTestImpl(); - const InternalRunDeathTestFlag* const flag = - impl->internal_run_death_test_flag(); - const int death_test_index = impl->current_test_info() - ->increment_death_test_count(); - - if (flag != NULL) { - if (death_test_index > flag->index) { - last_death_test_message = String::Format( - "Death test count (%d) somehow exceeded expected maximum (%d)", - death_test_index, flag->index); - return false; - } - - if (!(flag->file == file && flag->line == line && - flag->index == death_test_index)) { - *test = NULL; - return true; - } - } - - if (GTEST_FLAG(death_test_style) == "threadsafe") { - *test = new ExecDeathTest(statement, regex, file, line); - } else if (GTEST_FLAG(death_test_style) == "fast") { - *test = new NoExecDeathTest(statement, regex); - } else { - last_death_test_message = String::Format( - "Unknown death test style \"%s\" encountered", - GTEST_FLAG(death_test_style).c_str()); - return false; - } - - return true; -} - -// Splits a given string on a given delimiter, populating a given -// vector with the fields. GTEST_HAS_DEATH_TEST implies that we have -// ::std::string, so we can use it here. -static void SplitString(const ::std::string& str, char delimiter, - ::std::vector< ::std::string>* dest) { - ::std::vector< ::std::string> parsed; - ::std::string::size_type pos = 0; - while (true) { - const ::std::string::size_type colon = str.find(':', pos); - if (colon == ::std::string::npos) { - parsed.push_back(str.substr(pos)); - break; - } else { - parsed.push_back(str.substr(pos, colon - pos)); - pos = colon + 1; - } - } - dest->swap(parsed); -} - -// Attempts to parse a string into a positive integer. Returns true -// if that is possible. GTEST_HAS_DEATH_TEST implies that we have -// ::std::string, so we can use it here. -static bool ParsePositiveInt(const ::std::string& str, int* number) { - // Fail fast if the given string does not begin with a digit; - // this bypasses strtol's "optional leading whitespace and plus - // or minus sign" semantics, which are undesirable here. - if (str.empty() || !isdigit(str[0])) { - return false; - } - char* endptr; - const long parsed = strtol(str.c_str(), &endptr, 10); // NOLINT - if (*endptr == '\0' && parsed <= INT_MAX) { - *number = static_cast<int>(parsed); - return true; - } else { - return false; - } -} - -// Returns a newly created InternalRunDeathTestFlag object with fields -// initialized from the GTEST_FLAG(internal_run_death_test) flag if -// the flag is specified; otherwise returns NULL. -InternalRunDeathTestFlag* ParseInternalRunDeathTestFlag() { - if (GTEST_FLAG(internal_run_death_test) == "") return NULL; - - InternalRunDeathTestFlag* const internal_run_death_test_flag = - new InternalRunDeathTestFlag; - // GTEST_HAS_DEATH_TEST implies that we have ::std::string, so we - // can use it here. - ::std::vector< ::std::string> fields; - SplitString(GTEST_FLAG(internal_run_death_test).c_str(), ':', &fields); - if (fields.size() != 4 - || !ParsePositiveInt(fields[1], &internal_run_death_test_flag->line) - || !ParsePositiveInt(fields[2], &internal_run_death_test_flag->index) - || !ParsePositiveInt(fields[3], - &internal_run_death_test_flag->status_fd)) { - DeathTestAbort("Bad --gtest_internal_run_death_test flag: %s", - GTEST_FLAG(internal_run_death_test).c_str()); - } - internal_run_death_test_flag->file = fields[0].c_str(); - return internal_run_death_test_flag; -} - -} // namespace internal - -#endif // GTEST_HAS_DEATH_TEST - -} // namespace testing |