blob: 56c8a20c655a974f6aeaff2e6d8fa65ca294030a [file] [log] [blame]
// 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.
// Utility functions and classes used by the Google C++ testing framework.
// Author: (Zhanyong Wan)
// This file contains purely Google Test's internal implementation. Please
// GTEST_IMPLEMENTATION_ is defined to 1 iff the current translation unit is
// part of Google Test's implementation; otherwise it's undefined.
// If this file is included from the user's code, just say no.
# error "gtest-internal-inl.h is part of Google Test's internal implementation."
# error "It must not be included except by Google Test itself."
#ifndef _WIN32_WCE
# include <errno.h>
#endif // !_WIN32_WCE
#include <stddef.h>
#include <stdlib.h> // For strtoll/_strtoul64/malloc/free.
#include <string.h> // For memmove.
#include <algorithm>
#include <string>
#include <vector>
#include "gtest/internal/gtest-port.h"
# include <arpa/inet.h> // NOLINT
# include <netdb.h> // NOLINT
# include <windows.h> // NOLINT
#include "gtest/gtest.h" // NOLINT
#include "gtest/gtest-spi.h"
namespace testing {
// Declares the flags.
// We don't want the users to modify this flag in the code, but want
// Google Test's own unit tests to be able to access it. Therefore we
// declare it here as opposed to in gtest.h.
namespace internal {
// The value of GetTestTypeId() as seen from within the Google Test
// library. This is solely for testing GetTestTypeId().
GTEST_API_ extern const TypeId kTestTypeIdInGoogleTest;
// Names of the flags (needed for parsing Google Test flags).
const char kAlsoRunDisabledTestsFlag[] = "also_run_disabled_tests";
const char kBreakOnFailureFlag[] = "break_on_failure";
const char kCatchExceptionsFlag[] = "catch_exceptions";
const char kColorFlag[] = "color";
const char kFilterFlag[] = "filter";
const char kListTestsFlag[] = "list_tests";
const char kOutputFlag[] = "output";
const char kPrintTimeFlag[] = "print_time";
const char kRandomSeedFlag[] = "random_seed";
const char kRepeatFlag[] = "repeat";
const char kShuffleFlag[] = "shuffle";
const char kStackTraceDepthFlag[] = "stack_trace_depth";
const char kStreamResultToFlag[] = "stream_result_to";
const char kThrowOnFailureFlag[] = "throw_on_failure";
const char kFlagfileFlag[] = "flagfile";
// A valid random seed must be in [1, kMaxRandomSeed].
const int kMaxRandomSeed = 99999;
// g_help_flag is true iff the --help flag or an equivalent form is
// specified on the command line.
GTEST_API_ extern bool g_help_flag;
// Returns the current time in milliseconds.
GTEST_API_ TimeInMillis GetTimeInMillis();
// Returns true iff Google Test should use colors in the output.
GTEST_API_ bool ShouldUseColor(bool stdout_is_tty);
// Formats the given time in milliseconds as seconds.
GTEST_API_ std::string FormatTimeInMillisAsSeconds(TimeInMillis ms);
// Converts the given time in milliseconds to a date string in the ISO 8601
// format, without the timezone information. N.B.: due to the use the
// non-reentrant localtime() function, this function is not thread safe. Do
// not use it in any code that can be called from multiple threads.
GTEST_API_ std::string FormatEpochTimeInMillisAsIso8601(TimeInMillis ms);
// Parses a string for an Int32 flag, in the form of "--flag=value".
// On success, stores the value of the flag in *value, and returns
// true. On failure, returns false without changing *value.
GTEST_API_ bool ParseInt32Flag(
const char* str, const char* flag, Int32* value);
// Returns a random seed in range [1, kMaxRandomSeed] based on the
// given --gtest_random_seed flag value.
inline int GetRandomSeedFromFlag(Int32 random_seed_flag) {
const unsigned int raw_seed = (random_seed_flag == 0) ?
static_cast<unsigned int>(GetTimeInMillis()) :
static_cast<unsigned int>(random_seed_flag);
// Normalizes the actual seed to range [1, kMaxRandomSeed] such that
// it's easy to type.
const int normalized_seed =
static_cast<int>((raw_seed - 1U) %
static_cast<unsigned int>(kMaxRandomSeed)) + 1;
return normalized_seed;
// Returns the first valid random seed after 'seed'. The behavior is
// undefined if 'seed' is invalid. The seed after kMaxRandomSeed is
// considered to be 1.
inline int GetNextRandomSeed(int seed) {
GTEST_CHECK_(1 <= seed && seed <= kMaxRandomSeed)
<< "Invalid random seed " << seed << " - must be in [1, "
<< kMaxRandomSeed << "].";
const int next_seed = seed + 1;
return (next_seed > kMaxRandomSeed) ? 1 : next_seed;
// This class saves the values of all Google Test flags in its c'tor, and
// restores them in its d'tor.
class GTestFlagSaver {
// The c'tor.
GTestFlagSaver() {
also_run_disabled_tests_ = GTEST_FLAG(also_run_disabled_tests);
break_on_failure_ = GTEST_FLAG(break_on_failure);
catch_exceptions_ = GTEST_FLAG(catch_exceptions);
color_ = GTEST_FLAG(color);
death_test_style_ = GTEST_FLAG(death_test_style);
death_test_use_fork_ = GTEST_FLAG(death_test_use_fork);
filter_ = GTEST_FLAG(filter);
internal_run_death_test_ = GTEST_FLAG(internal_run_death_test);
list_tests_ = GTEST_FLAG(list_tests);
output_ = GTEST_FLAG(output);
print_time_ = GTEST_FLAG(print_time);
random_seed_ = GTEST_FLAG(random_seed);
repeat_ = GTEST_FLAG(repeat);
shuffle_ = GTEST_FLAG(shuffle);
stack_trace_depth_ = GTEST_FLAG(stack_trace_depth);
stream_result_to_ = GTEST_FLAG(stream_result_to);
throw_on_failure_ = GTEST_FLAG(throw_on_failure);
// The d'tor is not virtual. DO NOT INHERIT FROM THIS CLASS.
~GTestFlagSaver() {
GTEST_FLAG(also_run_disabled_tests) = also_run_disabled_tests_;
GTEST_FLAG(break_on_failure) = break_on_failure_;
GTEST_FLAG(catch_exceptions) = catch_exceptions_;
GTEST_FLAG(color) = color_;
GTEST_FLAG(death_test_style) = death_test_style_;
GTEST_FLAG(death_test_use_fork) = death_test_use_fork_;
GTEST_FLAG(filter) = filter_;
GTEST_FLAG(internal_run_death_test) = internal_run_death_test_;
GTEST_FLAG(list_tests) = list_tests_;
GTEST_FLAG(output) = output_;
GTEST_FLAG(print_time) = print_time_;
GTEST_FLAG(random_seed) = random_seed_;
GTEST_FLAG(repeat) = repeat_;
GTEST_FLAG(shuffle) = shuffle_;
GTEST_FLAG(stack_trace_depth) = stack_trace_depth_;
GTEST_FLAG(stream_result_to) = stream_result_to_;
GTEST_FLAG(throw_on_failure) = throw_on_failure_;
// Fields for saving the original values of flags.
bool also_run_disabled_tests_;
bool break_on_failure_;
bool catch_exceptions_;
std::string color_;
std::string death_test_style_;
bool death_test_use_fork_;
std::string filter_;
std::string internal_run_death_test_;
bool list_tests_;
std::string output_;
bool print_time_;
internal::Int32 random_seed_;
internal::Int32 repeat_;
bool shuffle_;
internal::Int32 stack_trace_depth_;
std::string stream_result_to_;
bool throw_on_failure_;
// Converts a Unicode code point to a narrow string in UTF-8 encoding.
// code_point parameter is of type UInt32 because wchar_t may not be
// wide enough to contain a code point.
// If the code_point is not a valid Unicode code point
// (i.e. outside of Unicode range U+0 to U+10FFFF) it will be converted
// to "(Invalid Unicode 0xXXXXXXXX)".
GTEST_API_ std::string CodePointToUtf8(UInt32 code_point);
// Converts a wide string to a narrow string in UTF-8 encoding.
// The wide string is assumed to have the following encoding:
// UTF-16 if sizeof(wchar_t) == 2 (on Windows, Cygwin, Symbian OS)
// UTF-32 if sizeof(wchar_t) == 4 (on Linux)
// Parameter str points to a null-terminated wide string.
// Parameter num_chars may additionally limit the number
// of wchar_t characters processed. -1 is used when the entire string
// should be processed.
// If the string contains code points that are not valid Unicode code points
// (i.e. outside of Unicode range U+0 to U+10FFFF) they will be output
// as '(Invalid Unicode 0xXXXXXXXX)'. If the string is in UTF16 encoding
// and contains invalid UTF-16 surrogate pairs, values in those pairs
// will be encoded as individual Unicode characters from Basic Normal Plane.
GTEST_API_ std::string WideStringToUtf8(const wchar_t* str, int num_chars);
// Reads the GTEST_SHARD_STATUS_FILE environment variable, and creates the file
// if the variable is present. If a file already exists at this location, this
// function will write over it. If the variable is present, but the file cannot
// be created, prints an error and exits.
void WriteToShardStatusFileIfNeeded();
// Checks whether sharding is enabled by examining the relevant
// environment variable values. If the variables are present,
// but inconsistent (e.g., shard_index >= total_shards), prints
// an error and exits. If in_subprocess_for_death_test, sharding is
// disabled because it must only be applied to the original test
// process. Otherwise, we could filter out death tests we intended to execute.
GTEST_API_ bool ShouldShard(const char* total_shards_str,
const char* shard_index_str,
bool in_subprocess_for_death_test);
// Parses the environment variable var as an Int32. If it is unset,
// returns default_val. If it is not an Int32, prints an error and
// and aborts.
GTEST_API_ Int32 Int32FromEnvOrDie(const char* env_var, Int32 default_val);
// Given the total number of shards, the shard index, and the test id,
// returns true iff the test should be run on this shard. The test id is
// some arbitrary but unique non-negative integer assigned to each test
// method. Assumes that 0 <= shard_index < total_shards.
GTEST_API_ bool ShouldRunTestOnShard(
int total_shards, int shard_index, int test_id);
// STL container utilities.
// Returns the number of elements in the given container that satisfy
// the given predicate.
template <class Container, typename Predicate>
inline int CountIf(const Container& c, Predicate predicate) {
// Implemented as an explicit loop since std::count_if() in libCstd on
// Solaris has a non-standard signature.
int count = 0;
for (typename Container::const_iterator it = c.begin(); it != c.end(); ++it) {
if (predicate(*it))
return count;
// Applies a function/functor to each element in the container.
template <class Container, typename Functor>
void ForEach(const Container& c, Functor functor) {
std::for_each(c.begin(), c.end(), functor);
// Returns the i-th element of the vector, or default_value if i is not
// in range [0, v.size()).
template <typename E>
inline E GetElementOr(const std::vector<E>& v, int i, E default_value) {
return (i < 0 || i >= static_cast<int>(v.size())) ? default_value : v[i];
// Performs an in-place shuffle of a range of the vector's elements.
// 'begin' and 'end' are element indices as an STL-style range;
// i.e. [begin, end) are shuffled, where 'end' == size() means to
// shuffle to the end of the vector.
template <typename E>
void ShuffleRange(internal::Random* random, int begin, int end,
std::vector<E>* v) {
const int size = static_cast<int>(v->size());
GTEST_CHECK_(0 <= begin && begin <= size)
<< "Invalid shuffle range start " << begin << ": must be in range [0, "
<< size << "].";
GTEST_CHECK_(begin <= end && end <= size)
<< "Invalid shuffle range finish " << end << ": must be in range ["
<< begin << ", " << size << "].";
// Fisher-Yates shuffle, from
for (int range_width = end - begin; range_width >= 2; range_width--) {
const int last_in_range = begin + range_width - 1;
const int selected = begin + random->Generate(range_width);
std::swap((*v)[selected], (*v)[last_in_range]);
// Performs an in-place shuffle of the vector's elements.
template <typename E>
inline void Shuffle(internal::Random* random, std::vector<E>* v) {
ShuffleRange(random, 0, static_cast<int>(v->size()), v);
// A function for deleting an object. Handy for being used as a
// functor.
template <typename T>
static void Delete(T* x) {
delete x;
// A predicate that checks the key of a TestProperty against a known key.
// TestPropertyKeyIs is copyable.
class TestPropertyKeyIs {
// Constructor.
// TestPropertyKeyIs has NO default constructor.
explicit TestPropertyKeyIs(const std::string& key) : key_(key) {}
// Returns true iff the test name of test property matches on key_.
bool operator()(const TestProperty& test_property) const {
return test_property.key() == key_;
std::string key_;
// Class UnitTestOptions.
// This class contains functions for processing options the user
// specifies when running the tests. It has only static members.
// In most cases, the user can specify an option using either an
// environment variable or a command line flag. E.g. you can set the
// test filter using either GTEST_FILTER or --gtest_filter. If both
// the variable and the flag are present, the latter overrides the
// former.
class GTEST_API_ UnitTestOptions {
// Functions for processing the gtest_output flag.
// Returns the output format, or "" for normal printed output.
static std::string GetOutputFormat();
// Returns the absolute path of the requested output file, or the
// default (test_detail.xml in the original working directory) if
// none was explicitly specified.
static std::string GetAbsolutePathToOutputFile();
// Functions for processing the gtest_filter flag.
// Returns true iff the wildcard pattern matches the string. The
// first ':' or '\0' character in pattern marks the end of it.
// This recursive algorithm isn't very efficient, but is clear and
// works well enough for matching test names, which are short.
static bool PatternMatchesString(const char *pattern, const char *str);
// Returns true iff the user-specified filter matches the test case
// name and the test name.
static bool FilterMatchesTest(const std::string &test_case_name,
const std::string &test_name);
// Function for supporting the gtest_catch_exception flag.
// Returns EXCEPTION_EXECUTE_HANDLER if Google Test should handle the
// given SEH exception, or EXCEPTION_CONTINUE_SEARCH otherwise.
// This function is useful as an __except condition.
static int GTestShouldProcessSEH(DWORD exception_code);
// Returns true if "name" matches the ':' separated list of glob-style
// filters in "filter".
static bool MatchesFilter(const std::string& name, const char* filter);
// Returns the current application's name, removing directory path if that
// is present. Used by UnitTestOptions::GetOutputFile.
GTEST_API_ FilePath GetCurrentExecutableName();
// The role interface for getting the OS stack trace as a string.
class OsStackTraceGetterInterface {
OsStackTraceGetterInterface() {}
virtual ~OsStackTraceGetterInterface() {}
// Returns the current OS stack trace as an std::string. Parameters:
// max_depth - the maximum number of stack frames to be included
// in the trace.
// skip_count - the number of top frames to be skipped; doesn't count
// against max_depth.
virtual string CurrentStackTrace(int max_depth, int skip_count) = 0;
// UponLeavingGTest() should be called immediately before Google Test calls
// user code. It saves some information about the current stack that
// CurrentStackTrace() will use to find and hide Google Test stack frames.
virtual void UponLeavingGTest() = 0;
// This string is inserted in place of stack frames that are part of
// Google Test's implementation.
static const char* const kElidedFramesMarker;
// A working implementation of the OsStackTraceGetterInterface interface.
class OsStackTraceGetter : public OsStackTraceGetterInterface {
OsStackTraceGetter() {}
virtual string CurrentStackTrace(int max_depth, int skip_count);
virtual void UponLeavingGTest();
// Information about a Google Test trace point.
struct TraceInfo {
const char* file;
int line;
std::string message;
// This is the default global test part result reporter used in UnitTestImpl.
// This class should only be used by UnitTestImpl.
class DefaultGlobalTestPartResultReporter
: public TestPartResultReporterInterface {
explicit DefaultGlobalTestPartResultReporter(UnitTestImpl* unit_test);
// Implements the TestPartResultReporterInterface. Reports the test part
// result in the current test.
virtual void ReportTestPartResult(const TestPartResult& result);
UnitTestImpl* const unit_test_;
// This is the default per thread test part result reporter used in
// UnitTestImpl. This class should only be used by UnitTestImpl.
class DefaultPerThreadTestPartResultReporter
: public TestPartResultReporterInterface {
explicit DefaultPerThreadTestPartResultReporter(UnitTestImpl* unit_test);
// Implements the TestPartResultReporterInterface. The implementation just
// delegates to the current global test part result reporter of *unit_test_.
virtual void ReportTestPartResult(const TestPartResult& result);
UnitTestImpl* const unit_test_;
// The private implementation of the UnitTest class. We don't protect
// the methods under a mutex, as this class is not accessible by a
// user and the UnitTest class that delegates work to this class does
// proper locking.
class GTEST_API_ UnitTestImpl {
explicit UnitTestImpl(UnitTest* parent);
virtual ~UnitTestImpl();
// There are two different ways to register your own TestPartResultReporter.
// You can register your own repoter to listen either only for test results
// from the current thread or for results from all threads.
// By default, each per-thread test result repoter just passes a new
// TestPartResult to the global test result reporter, which registers the
// test part result for the currently running test.
// Returns the global test part result reporter.
TestPartResultReporterInterface* GetGlobalTestPartResultReporter();
// Sets the global test part result reporter.
void SetGlobalTestPartResultReporter(
TestPartResultReporterInterface* reporter);
// Returns the test part result reporter for the current thread.
TestPartResultReporterInterface* GetTestPartResultReporterForCurrentThread();
// Sets the test part result reporter for the current thread.
void SetTestPartResultReporterForCurrentThread(
TestPartResultReporterInterface* reporter);
// Gets the number of successful test cases.
int successful_test_case_count() const;
// Gets the number of failed test cases.
int failed_test_case_count() const;
// Gets the number of all test cases.
int total_test_case_count() const;
// Gets the number of all test cases that contain at least one test
// that should run.
int test_case_to_run_count() const;
// Gets the number of successful tests.
int successful_test_count() const;
// Gets the number of failed tests.
int failed_test_count() const;
// Gets the number of disabled tests that will be reported in the XML report.
int reportable_disabled_test_count() const;
// Gets the number of disabled tests.
int disabled_test_count() const;
// Gets the number of tests to be printed in the XML report.
int reportable_test_count() const;
// Gets the number of all tests.
int total_test_count() const;
// Gets the number of tests that should run.
int test_to_run_count() const;
// Gets the time of the test program start, in ms from the start of the
// UNIX epoch.
TimeInMillis start_timestamp() const { return start_timestamp_; }
// Gets the elapsed time, in milliseconds.
TimeInMillis elapsed_time() const { return elapsed_time_; }
// Returns true iff the unit test passed (i.e. all test cases passed).
bool Passed() const { return !Failed(); }
// Returns true iff the unit test failed (i.e. some test case failed
// or something outside of all tests failed).
bool Failed() const {
return failed_test_case_count() > 0 || ad_hoc_test_result()->Failed();
// Gets the i-th test case among all the test cases. i can range from 0 to
// total_test_case_count() - 1. If i is not in that range, returns NULL.
const TestCase* GetTestCase(int i) const {
const int index = GetElementOr(test_case_indices_, i, -1);
return index < 0 ? NULL : test_cases_[i];
// Gets the i-th test case among all the test cases. i can range from 0 to
// total_test_case_count() - 1. If i is not in that range, returns NULL.
TestCase* GetMutableTestCase(int i) {
const int index = GetElementOr(test_case_indices_, i, -1);
return index < 0 ? NULL : test_cases_[index];
// Provides access to the event listener list.
TestEventListeners* listeners() { return &listeners_; }
// Returns the TestResult for the test that's currently running, or
// the TestResult for the ad hoc test if no test is running.
TestResult* current_test_result();
// Returns the TestResult for the ad hoc test.
const TestResult* ad_hoc_test_result() const { return &ad_hoc_test_result_; }
// Sets the OS stack trace getter.
// Does nothing if the input and the current OS stack trace getter
// are the same; otherwise, deletes the old getter and makes the
// input the current getter.
void set_os_stack_trace_getter(OsStackTraceGetterInterface* getter);
// Returns the current OS stack trace getter if it is not NULL;
// otherwise, creates an OsStackTraceGetter, makes it the current
// getter, and returns it.
OsStackTraceGetterInterface* os_stack_trace_getter();
// Returns the current OS stack trace as an std::string.
// The maximum number of stack frames to be included is specified by
// the gtest_stack_trace_depth flag. The skip_count parameter
// specifies the number of top frames to be skipped, which doesn't
// count against the number of frames to be included.
// For example, if Foo() calls Bar(), which in turn calls
// CurrentOsStackTraceExceptTop(1), Foo() will be included in the
// trace but Bar() and CurrentOsStackTraceExceptTop() won't.
std::string CurrentOsStackTraceExceptTop(int skip_count) GTEST_NO_INLINE_;
// Finds and returns a TestCase with the given name. If one doesn't
// exist, creates one and returns it.
// Arguments:
// test_case_name: name of the test case
// type_param: the name of the test's type parameter, or NULL if
// this is not a typed or a type-parameterized test.
// set_up_tc: pointer to the function that sets up the test case
// tear_down_tc: pointer to the function that tears down the test case
TestCase* GetTestCase(const char* test_case_name,
const char* type_param,
Test::SetUpTestCaseFunc set_up_tc,
Test::TearDownTestCaseFunc tear_down_tc);
// Adds a TestInfo to the unit test.
// Arguments:
// set_up_tc: pointer to the function that sets up the test case
// tear_down_tc: pointer to the function that tears down the test case
// test_info: the TestInfo object
void AddTestInfo(Test::SetUpTestCaseFunc set_up_tc,
Test::TearDownTestCaseFunc tear_down_tc,
TestInfo* test_info) {
// In order to support thread-safe death tests, we need to
// remember the original working directory when the test program
// was first invoked. We cannot do this in RUN_ALL_TESTS(), as
// the user may have changed the current directory before calling
// RUN_ALL_TESTS(). Therefore we capture the current directory in
// AddTestInfo(), which is called to register a TEST or TEST_F
// before main() is reached.
if (original_working_dir_.IsEmpty()) {
<< "Failed to get the current working directory.";
// Returns ParameterizedTestCaseRegistry object used to keep track of
// value-parameterized tests and instantiate and register them.
internal::ParameterizedTestCaseRegistry& parameterized_test_registry() {
return parameterized_test_registry_;
// Sets the TestCase object for the test that's currently running.
void set_current_test_case(TestCase* a_current_test_case) {
current_test_case_ = a_current_test_case;
// Sets the TestInfo object for the test that's currently running. If
// current_test_info is NULL, the assertion results will be stored in
// ad_hoc_test_result_.
void set_current_test_info(TestInfo* a_current_test_info) {
current_test_info_ = a_current_test_info;
// Registers all parameterized tests defined using TEST_P and
// INSTANTIATE_TEST_CASE_P, creating regular tests for each test/parameter
// combination. This method can be called more then once; it has guards
// protecting from registering the tests more then once. If
// value-parameterized tests are disabled, RegisterParameterizedTests is
// present but does nothing.
void RegisterParameterizedTests();
// Runs all tests in this UnitTest object, prints the result, and
// returns true if all tests are successful. If any exception is
// thrown during a test, this test is considered to be failed, but
// the rest of the tests will still be run.
bool RunAllTests();
// Clears the results of all tests, except the ad hoc tests.
void ClearNonAdHocTestResult() {
ForEach(test_cases_, TestCase::ClearTestCaseResult);
// Clears the results of ad-hoc test assertions.
void ClearAdHocTestResult() {
// Adds a TestProperty to the current TestResult object when invoked in a
// context of a test or a test case, or to the global property set. If the
// result already contains a property with the same key, the value will be
// updated.
void RecordProperty(const TestProperty& test_property);
enum ReactionToSharding {
// Matches the full name of each test against the user-specified
// filter to decide whether the test should run, then records the
// result in each TestCase and TestInfo object.
// If shard_tests == HONOR_SHARDING_PROTOCOL, further filters tests
// based on sharding variables in the environment.
// Returns the number of tests that should run.
int FilterTests(ReactionToSharding shard_tests);
// Prints the names of the tests matching the user-specified filter flag.
void ListTestsMatchingFilter();
const TestCase* current_test_case() const { return current_test_case_; }
TestInfo* current_test_info() { return current_test_info_; }
const TestInfo* current_test_info() const { return current_test_info_; }
// Returns the vector of environments that need to be set-up/torn-down
// before/after the tests are run.
std::vector<Environment*>& environments() { return environments_; }
// Getters for the per-thread Google Test trace stack.
std::vector<TraceInfo>& gtest_trace_stack() {
return *(gtest_trace_stack_.pointer());
const std::vector<TraceInfo>& gtest_trace_stack() const {
return gtest_trace_stack_.get();
void InitDeathTestSubprocessControlInfo() {
// Returns a pointer to the parsed --gtest_internal_run_death_test
// flag, or NULL if that flag was not specified.
// This information is useful only in a death test child process.
// Must not be called before a call to InitGoogleTest.
const InternalRunDeathTestFlag* internal_run_death_test_flag() const {
return internal_run_death_test_flag_.get();
// Returns a pointer to the current death test factory.
internal::DeathTestFactory* death_test_factory() {
return death_test_factory_.get();
void SuppressTestEventsIfInSubprocess();
friend class ReplaceDeathTestFactory;
// Initializes the event listener performing XML output as specified by
// UnitTestOptions. Must not be called before InitGoogleTest.
void ConfigureXmlOutput();
// Initializes the event listener for streaming test results to a socket.
// Must not be called before InitGoogleTest.
void ConfigureStreamingOutput();
// Performs initialization dependent upon flag values obtained in
// ParseGoogleTestFlagsOnly. Is called from InitGoogleTest after the call to
// ParseGoogleTestFlagsOnly. In case a user neglects to call InitGoogleTest
// this function is also called from RunAllTests. Since this function can be
// called more than once, it has to be idempotent.
void PostFlagParsingInit();
// Gets the random seed used at the start of the current test iteration.
int random_seed() const { return random_seed_; }
// Gets the random number generator.
internal::Random* random() { return &random_; }
// Shuffles all test cases, and the tests within each test case,
// making sure that death tests are still run first.
void ShuffleTests();
// Restores the test cases and tests to their order before the first shuffle.
void UnshuffleTests();
// Returns the value of GTEST_FLAG(catch_exceptions) at the moment
// UnitTest::Run() starts.
bool catch_exceptions() const { return catch_exceptions_; }
friend class ::testing::UnitTest;
// Used by UnitTest::Run() to capture the state of
// GTEST_FLAG(catch_exceptions) at the moment it starts.
void set_catch_exceptions(bool value) { catch_exceptions_ = value; }
// The UnitTest object that owns this implementation object.
UnitTest* const parent_;
// The working directory when the first TEST() or TEST_F() was
// executed.
internal::FilePath original_working_dir_;
// The default test part result reporters.
DefaultGlobalTestPartResultReporter default_global_test_part_result_reporter_;
// Points to (but doesn't own) the global test part result reporter.
TestPartResultReporterInterface* global_test_part_result_repoter_;
// Protects read and write access to global_test_part_result_reporter_.
internal::Mutex global_test_part_result_reporter_mutex_;
// Points to (but doesn't own) the per-thread test part result reporter.
// The vector of environments that need to be set-up/torn-down
// before/after the tests are run.
std::vector<Environment*> environments_;
// The vector of TestCases in their original order. It owns the
// elements in the vector.
std::vector<TestCase*> test_cases_;
// Provides a level of indirection for the test case list to allow
// easy shuffling and restoring the test case order. The i-th
// element of this vector is the index of the i-th test case in the
// shuffled order.
std::vector<int> test_case_indices_;
// ParameterizedTestRegistry object used to register value-parameterized
// tests.
internal::ParameterizedTestCaseRegistry parameterized_test_registry_;
// Indicates whether RegisterParameterizedTests() has been called already.
bool parameterized_tests_registered_;
// Index of the last death test case registered. Initially -1.
int last_death_test_case_;
// This points to the TestCase for the currently running test. It
// changes as Google Test goes through one test case after another.
// When no test is running, this is set to NULL and Google Test
// stores assertion results in ad_hoc_test_result_. Initially NULL.
TestCase* current_test_case_;
// This points to the TestInfo for the currently running test. It
// changes as Google Test goes through one test after another. When
// no test is running, this is set to NULL and Google Test stores
// assertion results in ad_hoc_test_result_. Initially NULL.
TestInfo* current_test_info_;
// Normally, a user only writes assertions inside a TEST or TEST_F,
// or inside a function called by a TEST or TEST_F. Since Google
// Test keeps track of which test is current running, it can
// associate such an assertion with the test it belongs to.
// If an assertion is encountered when no TEST or TEST_F is running,
// Google Test attributes the assertion result to an imaginary "ad hoc"
// test, and records the result in ad_hoc_test_result_.
TestResult ad_hoc_test_result_;
// The list of event listeners that can be used to track events inside
// Google Test.
TestEventListeners listeners_;
// The OS stack trace getter. Will be deleted when the UnitTest
// object is destructed. By default, an OsStackTraceGetter is used,
// but the user can set this field to use a custom getter if that is
// desired.
OsStackTraceGetterInterface* os_stack_trace_getter_;
// True iff PostFlagParsingInit() has been called.
bool post_flag_parse_init_performed_;
// The random number seed used at the beginning of the test run.
int random_seed_;
// Our random number generator.
internal::Random random_;
// The time of the test program start, in ms from the start of the
// UNIX epoch.
TimeInMillis start_timestamp_;
// How long the test took to run, in milliseconds.
TimeInMillis elapsed_time_;
// The decomposed components of the gtest_internal_run_death_test flag,
// parsed when RUN_ALL_TESTS is called.
internal::scoped_ptr<InternalRunDeathTestFlag> internal_run_death_test_flag_;
internal::scoped_ptr<internal::DeathTestFactory> death_test_factory_;
// A per-thread stack of traces created by the SCOPED_TRACE() macro.
internal::ThreadLocal<std::vector<TraceInfo> > gtest_trace_stack_;
// The value of GTEST_FLAG(catch_exceptions) at the moment RunAllTests()
// starts.
bool catch_exceptions_;
}; // class UnitTestImpl
// Convenience function for accessing the global UnitTest
// implementation object.
inline UnitTestImpl* GetUnitTestImpl() {
return UnitTest::GetInstance()->impl();
// Internal helper functions for implementing the simple regular
// expression matcher.
GTEST_API_ bool IsInSet(char ch, const char* str);
GTEST_API_ bool IsAsciiDigit(char ch);
GTEST_API_ bool IsAsciiPunct(char ch);
GTEST_API_ bool IsRepeat(char ch);
GTEST_API_ bool IsAsciiWhiteSpace(char ch);
GTEST_API_ bool IsAsciiWordChar(char ch);
GTEST_API_ bool IsValidEscape(char ch);
GTEST_API_ bool AtomMatchesChar(bool escaped, char pattern, char ch);
GTEST_API_ bool ValidateRegex(const char* regex);
GTEST_API_ bool MatchRegexAtHead(const char* regex, const char* str);
GTEST_API_ bool MatchRepetitionAndRegexAtHead(
bool escaped, char ch, char repeat, const char* regex, const char* str);
GTEST_API_ bool MatchRegexAnywhere(const char* regex, const char* str);
// Parses the command line for Google Test flags, without initializing
// other parts of Google Test.
GTEST_API_ void ParseGoogleTestFlagsOnly(int* argc, char** argv);
GTEST_API_ void ParseGoogleTestFlagsOnly(int* argc, wchar_t** argv);
// Returns the message describing the last system error, regardless of the
// platform.
GTEST_API_ std::string GetLastErrnoDescription();
// Attempts to parse a string into a positive integer pointed to by the
// number parameter. Returns true if that is possible.
// GTEST_HAS_DEATH_TEST implies that we have ::std::string, so we can use
// it here.
template <typename Integer>
bool ParseNaturalNumber(const ::std::string& str, Integer* number) {
// Fail fast if the given string does not begin with a digit;
// this bypasses strtoXXX's "optional leading whitespace and plus
// or minus sign" semantics, which are undesirable here.
if (str.empty() || !IsDigit(str[0])) {
return false;
errno = 0;
char* end;
// BiggestConvertible is the largest integer type that system-provided
// string-to-number conversion routines can return.
# if GTEST_OS_WINDOWS && !defined(__GNUC__)
// MSVC and C++ Builder define __int64 instead of the standard long long.
typedef unsigned __int64 BiggestConvertible;
const BiggestConvertible parsed = _strtoui64(str.c_str(), &end, 10);
# else
typedef unsigned long long BiggestConvertible; // NOLINT
const BiggestConvertible parsed = strtoull(str.c_str(), &end, 10);
# endif // GTEST_OS_WINDOWS && !defined(__GNUC__)
const bool parse_success = *end == '\0' && errno == 0;
// TODO( Convert this to compile time assertion when it is
// available.
GTEST_CHECK_(sizeof(Integer) <= sizeof(parsed));
const Integer result = static_cast<Integer>(parsed);
if (parse_success && static_cast<BiggestConvertible>(result) == parsed) {
*number = result;
return true;
return false;
// TestResult contains some private methods that should be hidden from
// Google Test user but are required for testing. This class allow our tests
// to access them.
// This class is supplied only for the purpose of testing Google Test's own
// constructs. Do not use it in user tests, either directly or indirectly.
class TestResultAccessor {
static void RecordProperty(TestResult* test_result,
const std::string& xml_element,
const TestProperty& property) {
test_result->RecordProperty(xml_element, property);
static void ClearTestPartResults(TestResult* test_result) {
static const std::vector<testing::TestPartResult>& test_part_results(
const TestResult& test_result) {
return test_result.test_part_results();
// Streams test results to the given port on the given host machine.
class StreamingListener : public EmptyTestEventListener {
// Abstract base class for writing strings to a socket.
class AbstractSocketWriter {
virtual ~AbstractSocketWriter() {}
// Sends a string to the socket.
virtual void Send(const string& message) = 0;
// Closes the socket.
virtual void CloseConnection() {}
// Sends a string and a newline to the socket.
void SendLn(const string& message) {
Send(message + "\n");
// Concrete class for actually writing strings to a socket.
class SocketWriter : public AbstractSocketWriter {
SocketWriter(const string& host, const string& port)
: sockfd_(-1), host_name_(host), port_num_(port) {
virtual ~SocketWriter() {
if (sockfd_ != -1)
// Sends a string to the socket.
virtual void Send(const string& message) {
GTEST_CHECK_(sockfd_ != -1)
<< "Send() can be called only when there is a connection.";
const int len = static_cast<int>(message.length());
if (write(sockfd_, message.c_str(), len) != len) {
<< "stream_result_to: failed to stream to "
<< host_name_ << ":" << port_num_;
// Creates a client socket and connects to the server.
void MakeConnection();
// Closes the socket.
void CloseConnection() {
GTEST_CHECK_(sockfd_ != -1)
<< "CloseConnection() can be called only when there is a connection.";
sockfd_ = -1;
int sockfd_; // socket file descriptor
const string host_name_;
const string port_num_;
}; // class SocketWriter
// Escapes '=', '&', '%', and '\n' characters in str as "%xx".
static string UrlEncode(const char* str);
StreamingListener(const string& host, const string& port)
: socket_writer_(new SocketWriter(host, port)) { Start(); }
explicit StreamingListener(AbstractSocketWriter* socket_writer)
: socket_writer_(socket_writer) { Start(); }
void OnTestProgramStart(const UnitTest& /* unit_test */) {
void OnTestProgramEnd(const UnitTest& unit_test) {
// Note that Google Test current only report elapsed time for each
// test iteration, not for the entire test program.
SendLn("event=TestProgramEnd&passed=" + FormatBool(unit_test.Passed()));
// Notify the streaming server to stop.
void OnTestIterationStart(const UnitTest& /* unit_test */, int iteration) {
SendLn("event=TestIterationStart&iteration=" +
void OnTestIterationEnd(const UnitTest& unit_test, int /* iteration */) {
SendLn("event=TestIterationEnd&passed=" +
FormatBool(unit_test.Passed()) + "&elapsed_time=" +
StreamableToString(unit_test.elapsed_time()) + "ms");
void OnTestCaseStart(const TestCase& test_case) {
SendLn(std::string("event=TestCaseStart&name=") +;
void OnTestCaseEnd(const TestCase& test_case) {
SendLn("event=TestCaseEnd&passed=" + FormatBool(test_case.Passed())
+ "&elapsed_time=" + StreamableToString(test_case.elapsed_time())
+ "ms");
void OnTestStart(const TestInfo& test_info) {
SendLn(std::string("event=TestStart&name=") +;
void OnTestEnd(const TestInfo& test_info) {
SendLn("event=TestEnd&passed=" +
FormatBool((test_info.result())->Passed()) +
"&elapsed_time=" +
StreamableToString((test_info.result())->elapsed_time()) + "ms");
void OnTestPartResult(const TestPartResult& test_part_result) {
const char* file_name = test_part_result.file_name();
if (file_name == NULL)
file_name = "";
SendLn("event=TestPartResult&file=" + UrlEncode(file_name) +
"&line=" + StreamableToString(test_part_result.line_number()) +
"&message=" + UrlEncode(test_part_result.message()));
// Sends the given message and a newline to the socket.
void SendLn(const string& message) { socket_writer_->SendLn(message); }
// Called at the start of streaming to notify the receiver what
// protocol we are using.
void Start() { SendLn("gtest_streaming_protocol_version=1.0"); }
string FormatBool(bool value) { return value ? "1" : "0"; }
const scoped_ptr<AbstractSocketWriter> socket_writer_;
}; // class StreamingListener
} // namespace internal
} // namespace testing