tor-browser

gtest-internal-inl.h (47373B)

---

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// All rights reserved.
//
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// 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
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

// Utility functions and classes used by the Google C++ testing framework.//
// This file contains purely Google Test's internal implementation.  Please
// DO NOT #INCLUDE IT IN A USER PROGRAM.

#ifndef GOOGLETEST_SRC_GTEST_INTERNAL_INL_H_
#define GOOGLETEST_SRC_GTEST_INTERNAL_INL_H_

#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 <cstdint>
#include <memory>
#include <string>
#include <vector>

#include "gtest/internal/gtest-port.h"

#if GTEST_CAN_STREAM_RESULTS_
# include <arpa/inet.h>  // NOLINT
# include <netdb.h>  // NOLINT
#endif

#if GTEST_OS_WINDOWS
# include <windows.h>  // NOLINT
#endif  // GTEST_OS_WINDOWS

#include "gtest/gtest.h"
#include "gtest/gtest-spi.h"

GTEST_DISABLE_MSC_WARNINGS_PUSH_(4251 \
/* class A needs to have dll-interface to be used by clients of class B */)

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.
GTEST_DECLARE_bool_(death_test_use_fork);

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 kFailFast[] = "fail_fast";
const char kFilterFlag[] = "filter";
const char kListTestsFlag[] = "list_tests";
const char kOutputFlag[] = "output";
const char kBriefFlag[] = "brief";
const char kPrintTimeFlag[] = "print_time";
const char kPrintUTF8Flag[] = "print_utf8";
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 if and only if 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 if and only if 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_t* value);

// Returns a random seed in range [1, kMaxRandomSeed] based on the
// given --gtest_random_seed flag value.
inline int GetRandomSeedFromFlag(int32_t 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 {
public:
 // 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);
   fail_fast_ = GTEST_FLAG(fail_fast);
   filter_ = GTEST_FLAG(filter);
   internal_run_death_test_ = GTEST_FLAG(internal_run_death_test);
   list_tests_ = GTEST_FLAG(list_tests);
   output_ = GTEST_FLAG(output);
   brief_ = GTEST_FLAG(brief);
   print_time_ = GTEST_FLAG(print_time);
   print_utf8_ = GTEST_FLAG(print_utf8);
   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(fail_fast) = fail_fast_;
   GTEST_FLAG(internal_run_death_test) = internal_run_death_test_;
   GTEST_FLAG(list_tests) = list_tests_;
   GTEST_FLAG(output) = output_;
   GTEST_FLAG(brief) = brief_;
   GTEST_FLAG(print_time) = print_time_;
   GTEST_FLAG(print_utf8) = print_utf8_;
   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_;
 }

private:
 // 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_;
 bool fail_fast_;
 std::string filter_;
 std::string internal_run_death_test_;
 bool list_tests_;
 std::string output_;
 bool brief_;
 bool print_time_;
 bool print_utf8_;
 int32_t random_seed_;
 int32_t repeat_;
 bool shuffle_;
 int32_t stack_trace_depth_;
 std::string stream_result_to_;
 bool throw_on_failure_;
} GTEST_ATTRIBUTE_UNUSED_;

// 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_t 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)
//   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 a 32-bit integer. If it is unset,
// returns default_val. If it is not a 32-bit integer, prints an error and
// and aborts.
GTEST_API_ int32_t Int32FromEnvOrDie(const char* env_var, int32_t default_val);

// Given the total number of shards, the shard index, and the test id,
// returns true if and only if 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))
     ++count;
 }
 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[static_cast<size_t>(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
 // http://en.wikipedia.org/wiki/Fisher-Yates_shuffle
 for (int range_width = end - begin; range_width >= 2; range_width--) {
   const int last_in_range = begin + range_width - 1;
   const int selected =
       begin +
       static_cast<int>(random->Generate(static_cast<uint32_t>(range_width)));
   std::swap((*v)[static_cast<size_t>(selected)],
             (*v)[static_cast<size_t>(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 {
public:
 // Constructor.
 //
 // TestPropertyKeyIs has NO default constructor.
 explicit TestPropertyKeyIs(const std::string& key) : key_(key) {}

 // Returns true if and only if the test name of test property matches on key_.
 bool operator()(const TestProperty& test_property) const {
   return test_property.key() == key_;
 }

private:
 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 {
public:
 // 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 if and only if the user-specified filter matches the test
 // suite name and the test name.
 static bool FilterMatchesTest(const std::string& test_suite_name,
                               const std::string& test_name);

#if GTEST_OS_WINDOWS
 // 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);
#endif  // GTEST_OS_WINDOWS

 // 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 {
public:
 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 std::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;

private:
 GTEST_DISALLOW_COPY_AND_ASSIGN_(OsStackTraceGetterInterface);
};

// A working implementation of the OsStackTraceGetterInterface interface.
class OsStackTraceGetter : public OsStackTraceGetterInterface {
public:
 OsStackTraceGetter() {}

 std::string CurrentStackTrace(int max_depth, int skip_count) override;
 void UponLeavingGTest() override;

private:
#if GTEST_HAS_ABSL
 Mutex mutex_;  // Protects all internal state.

 // We save the stack frame below the frame that calls user code.
 // We do this because the address of the frame immediately below
 // the user code changes between the call to UponLeavingGTest()
 // and any calls to the stack trace code from within the user code.
 void* caller_frame_ = nullptr;
#endif  // GTEST_HAS_ABSL

 GTEST_DISALLOW_COPY_AND_ASSIGN_(OsStackTraceGetter);
};

// 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 {
public:
 explicit DefaultGlobalTestPartResultReporter(UnitTestImpl* unit_test);
 // Implements the TestPartResultReporterInterface. Reports the test part
 // result in the current test.
 void ReportTestPartResult(const TestPartResult& result) override;

private:
 UnitTestImpl* const unit_test_;

 GTEST_DISALLOW_COPY_AND_ASSIGN_(DefaultGlobalTestPartResultReporter);
};

// 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 {
public:
 explicit DefaultPerThreadTestPartResultReporter(UnitTestImpl* unit_test);
 // Implements the TestPartResultReporterInterface. The implementation just
 // delegates to the current global test part result reporter of *unit_test_.
 void ReportTestPartResult(const TestPartResult& result) override;

private:
 UnitTestImpl* const unit_test_;

 GTEST_DISALLOW_COPY_AND_ASSIGN_(DefaultPerThreadTestPartResultReporter);
};

// 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 {
public:
 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 suites.
 int successful_test_suite_count() const;

 // Gets the number of failed test suites.
 int failed_test_suite_count() const;

 // Gets the number of all test suites.
 int total_test_suite_count() const;

 // Gets the number of all test suites that contain at least one test
 // that should run.
 int test_suite_to_run_count() const;

 // Gets the number of successful tests.
 int successful_test_count() const;

 // Gets the number of skipped tests.
 int skipped_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 if and only if the unit test passed (i.e. all test suites
 // passed).
 bool Passed() const { return !Failed(); }

 // Returns true if and only if the unit test failed (i.e. some test suite
 // failed or something outside of all tests failed).
 bool Failed() const {
   return failed_test_suite_count() > 0 || ad_hoc_test_result()->Failed();
 }

 // Gets the i-th test suite among all the test suites. i can range from 0 to
 // total_test_suite_count() - 1. If i is not in that range, returns NULL.
 const TestSuite* GetTestSuite(int i) const {
   const int index = GetElementOr(test_suite_indices_, i, -1);
   return index < 0 ? nullptr : test_suites_[static_cast<size_t>(i)];
 }

 //  Legacy API is deprecated but still available
#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
 const TestCase* GetTestCase(int i) const { return GetTestSuite(i); }
#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_

 // Gets the i-th test suite among all the test suites. i can range from 0 to
 // total_test_suite_count() - 1. If i is not in that range, returns NULL.
 TestSuite* GetMutableSuiteCase(int i) {
   const int index = GetElementOr(test_suite_indices_, i, -1);
   return index < 0 ? nullptr : test_suites_[static_cast<size_t>(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 TestSuite with the given name.  If one doesn't
 // exist, creates one and returns it.
 //
 // Arguments:
 //
 //   test_suite_name: name of the test suite
 //   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 suite
 //   tear_down_tc:    pointer to the function that tears down the test suite
 TestSuite* GetTestSuite(const char* test_suite_name, const char* type_param,
                         internal::SetUpTestSuiteFunc set_up_tc,
                         internal::TearDownTestSuiteFunc tear_down_tc);

//  Legacy API is deprecated but still available
#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
 TestCase* GetTestCase(const char* test_case_name, const char* type_param,
                       internal::SetUpTestSuiteFunc set_up_tc,
                       internal::TearDownTestSuiteFunc tear_down_tc) {
   return GetTestSuite(test_case_name, type_param, set_up_tc, tear_down_tc);
 }
#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_

 // Adds a TestInfo to the unit test.
 //
 // Arguments:
 //
 //   set_up_tc:    pointer to the function that sets up the test suite
 //   tear_down_tc: pointer to the function that tears down the test suite
 //   test_info:    the TestInfo object
 void AddTestInfo(internal::SetUpTestSuiteFunc set_up_tc,
                  internal::TearDownTestSuiteFunc tear_down_tc,
                  TestInfo* test_info) {
#if GTEST_HAS_DEATH_TEST
   // 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()) {
     original_working_dir_.Set(FilePath::GetCurrentDir());
     GTEST_CHECK_(!original_working_dir_.IsEmpty())
         << "Failed to get the current working directory.";
   }
#endif  // GTEST_HAS_DEATH_TEST

   GetTestSuite(test_info->test_suite_name(), test_info->type_param(),
                set_up_tc, tear_down_tc)
       ->AddTestInfo(test_info);
 }

 // Returns ParameterizedTestSuiteRegistry object used to keep track of
 // value-parameterized tests and instantiate and register them.
 internal::ParameterizedTestSuiteRegistry& parameterized_test_registry() {
   return parameterized_test_registry_;
 }

 std::set<std::string>* ignored_parameterized_test_suites() {
   return &ignored_parameterized_test_suites_;
 }

 // Returns TypeParameterizedTestSuiteRegistry object used to keep track of
 // type-parameterized tests and instantiations of them.
 internal::TypeParameterizedTestSuiteRegistry&
 type_parameterized_test_registry() {
   return type_parameterized_test_registry_;
 }

 // Sets the TestSuite object for the test that's currently running.
 void set_current_test_suite(TestSuite* a_current_test_suite) {
   current_test_suite_ = a_current_test_suite;
 }

 // 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_SUITE_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_suites_, TestSuite::ClearTestSuiteResult);
 }

 // Clears the results of ad-hoc test assertions.
 void ClearAdHocTestResult() {
   ad_hoc_test_result_.Clear();
 }

 // Adds a TestProperty to the current TestResult object when invoked in a
 // context of a test or a test suite, 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 {
   HONOR_SHARDING_PROTOCOL,
   IGNORE_SHARDING_PROTOCOL
 };

 // 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 TestSuite 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 TestSuite* current_test_suite() const { return current_test_suite_; }
 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();
 }

#if GTEST_HAS_DEATH_TEST
 void InitDeathTestSubprocessControlInfo() {
   internal_run_death_test_flag_.reset(ParseInternalRunDeathTestFlag());
 }
 // 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;
#endif  // GTEST_HAS_DEATH_TEST

 // Initializes the event listener performing XML output as specified by
 // UnitTestOptions. Must not be called before InitGoogleTest.
 void ConfigureXmlOutput();

#if GTEST_CAN_STREAM_RESULTS_
 // Initializes the event listener for streaming test results to a socket.
 // Must not be called before InitGoogleTest.
 void ConfigureStreamingOutput();
#endif

 // 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 suites, and the tests within each test suite,
 // making sure that death tests are still run first.
 void ShuffleTests();

 // Restores the test suites 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_; }

private:
 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_;
 DefaultPerThreadTestPartResultReporter
     default_per_thread_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.
 internal::ThreadLocal<TestPartResultReporterInterface*>
     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 TestSuites in their original order.  It owns the
 // elements in the vector.
 std::vector<TestSuite*> test_suites_;

 // Provides a level of indirection for the test suite list to allow
 // easy shuffling and restoring the test suite order.  The i-th
 // element of this vector is the index of the i-th test suite in the
 // shuffled order.
 std::vector<int> test_suite_indices_;

 // ParameterizedTestRegistry object used to register value-parameterized
 // tests.
 internal::ParameterizedTestSuiteRegistry parameterized_test_registry_;
 internal::TypeParameterizedTestSuiteRegistry
     type_parameterized_test_registry_;

 // The set holding the name of parameterized
 // test suites that may go uninstantiated.
 std::set<std::string> ignored_parameterized_test_suites_;

 // Indicates whether RegisterParameterizedTests() has been called already.
 bool parameterized_tests_registered_;

 // Index of the last death test suite registered.  Initially -1.
 int last_death_test_suite_;

 // This points to the TestSuite for the currently running test.  It
 // changes as Google Test goes through one test suite 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.
 TestSuite* current_test_suite_;

 // 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 if and only if 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_;

#if GTEST_HAS_DEATH_TEST
 // The decomposed components of the gtest_internal_run_death_test flag,
 // parsed when RUN_ALL_TESTS is called.
 std::unique_ptr<InternalRunDeathTestFlag> internal_run_death_test_flag_;
 std::unique_ptr<internal::DeathTestFactory> death_test_factory_;
#endif  // GTEST_HAS_DEATH_TEST

 // 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_;

 GTEST_DISALLOW_COPY_AND_ASSIGN_(UnitTestImpl);
};  // class UnitTestImpl

// Convenience function for accessing the global UnitTest
// implementation object.
inline UnitTestImpl* GetUnitTestImpl() {
 return UnitTest::GetInstance()->impl();
}

#if GTEST_USES_SIMPLE_RE

// 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);

#endif  // GTEST_USES_SIMPLE_RE

// 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);

#if GTEST_HAS_DEATH_TEST

// 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.
 using BiggestConvertible = unsigned long long;  // NOLINT

 const BiggestConvertible parsed = strtoull(str.c_str(), &end, 10);  // NOLINT
 const bool parse_success = *end == '\0' && errno == 0;

 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;
}
#endif  // GTEST_HAS_DEATH_TEST

// 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 {
public:
 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) {
   test_result->ClearTestPartResults();
 }

 static const std::vector<testing::TestPartResult>& test_part_results(
     const TestResult& test_result) {
   return test_result.test_part_results();
 }
};

#if GTEST_CAN_STREAM_RESULTS_

// Streams test results to the given port on the given host machine.
class StreamingListener : public EmptyTestEventListener {
public:
 // Abstract base class for writing strings to a socket.
 class AbstractSocketWriter {
  public:
   virtual ~AbstractSocketWriter() {}

   // Sends a string to the socket.
   virtual void Send(const std::string& message) = 0;

   // Closes the socket.
   virtual void CloseConnection() {}

   // Sends a string and a newline to the socket.
   void SendLn(const std::string& message) { Send(message + "\n"); }
 };

 // Concrete class for actually writing strings to a socket.
 class SocketWriter : public AbstractSocketWriter {
  public:
   SocketWriter(const std::string& host, const std::string& port)
       : sockfd_(-1), host_name_(host), port_num_(port) {
     MakeConnection();
   }

   ~SocketWriter() override {
     if (sockfd_ != -1)
       CloseConnection();
   }

   // Sends a string to the socket.
   void Send(const std::string& message) override {
     GTEST_CHECK_(sockfd_ != -1)
         << "Send() can be called only when there is a connection.";

     const auto len = static_cast<size_t>(message.length());
     if (write(sockfd_, message.c_str(), len) != static_cast<ssize_t>(len)) {
       GTEST_LOG_(WARNING)
           << "stream_result_to: failed to stream to "
           << host_name_ << ":" << port_num_;
     }
   }

  private:
   // Creates a client socket and connects to the server.
   void MakeConnection();

   // Closes the socket.
   void CloseConnection() override {
     GTEST_CHECK_(sockfd_ != -1)
         << "CloseConnection() can be called only when there is a connection.";

     close(sockfd_);
     sockfd_ = -1;
   }

   int sockfd_;  // socket file descriptor
   const std::string host_name_;
   const std::string port_num_;

   GTEST_DISALLOW_COPY_AND_ASSIGN_(SocketWriter);
 };  // class SocketWriter

 // Escapes '=', '&', '%', and '\n' characters in str as "%xx".
 static std::string UrlEncode(const char* str);

 StreamingListener(const std::string& host, const std::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 */) override {
   SendLn("event=TestProgramStart");
 }

 void OnTestProgramEnd(const UnitTest& unit_test) override {
   // 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.
   socket_writer_->CloseConnection();
 }

 void OnTestIterationStart(const UnitTest& /* unit_test */,
                           int iteration) override {
   SendLn("event=TestIterationStart&iteration=" +
          StreamableToString(iteration));
 }

 void OnTestIterationEnd(const UnitTest& unit_test,
                         int /* iteration */) override {
   SendLn("event=TestIterationEnd&passed=" +
          FormatBool(unit_test.Passed()) + "&elapsed_time=" +
          StreamableToString(unit_test.elapsed_time()) + "ms");
 }

 // Note that "event=TestCaseStart" is a wire format and has to remain
 // "case" for compatibility
 void OnTestCaseStart(const TestCase& test_case) override {
   SendLn(std::string("event=TestCaseStart&name=") + test_case.name());
 }

 // Note that "event=TestCaseEnd" is a wire format and has to remain
 // "case" for compatibility
 void OnTestCaseEnd(const TestCase& test_case) override {
   SendLn("event=TestCaseEnd&passed=" + FormatBool(test_case.Passed()) +
          "&elapsed_time=" + StreamableToString(test_case.elapsed_time()) +
          "ms");
 }

 void OnTestStart(const TestInfo& test_info) override {
   SendLn(std::string("event=TestStart&name=") + test_info.name());
 }

 void OnTestEnd(const TestInfo& test_info) override {
   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) override {
   const char* file_name = test_part_result.file_name();
   if (file_name == nullptr) file_name = "";
   SendLn("event=TestPartResult&file=" + UrlEncode(file_name) +
          "&line=" + StreamableToString(test_part_result.line_number()) +
          "&message=" + UrlEncode(test_part_result.message()));
 }

private:
 // Sends the given message and a newline to the socket.
 void SendLn(const std::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"); }

 std::string FormatBool(bool value) { return value ? "1" : "0"; }

 const std::unique_ptr<AbstractSocketWriter> socket_writer_;

 GTEST_DISALLOW_COPY_AND_ASSIGN_(StreamingListener);
};  // class StreamingListener

#endif  // GTEST_CAN_STREAM_RESULTS_

}  // namespace internal
}  // namespace testing

GTEST_DISABLE_MSC_WARNINGS_POP_()  //  4251

#endif  // GOOGLETEST_SRC_GTEST_INTERNAL_INL_H_