llvm/third-party/unittest/googletest/src/gtest.cc

// 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.

//
// The Google C++ Testing and Mocking Framework (Google Test)

#include "gtest/gtest.h"

#include <ctype.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <wchar.h>
#include <wctype.h>

#include <algorithm>
#include <chrono>  // NOLINT
#include <cmath>
#include <cstdint>
#include <cstdlib>
#include <cstring>
#include <initializer_list>
#include <iomanip>
#include <ios>
#include <iostream>
#include <iterator>
#include <limits>
#include <list>
#include <map>
#include <ostream>  // NOLINT
#include <set>
#include <sstream>
#include <unordered_set>
#include <utility>
#include <vector>

#include "gtest/gtest-assertion-result.h"
#include "gtest/gtest-spi.h"
#include "gtest/internal/custom/gtest.h"
#include "gtest/internal/gtest-port.h"

#ifdef GTEST_OS_LINUX

#include <fcntl.h>   // NOLINT
#include <limits.h>  // NOLINT
#include <sched.h>   // NOLINT
// Declares vsnprintf().  This header is not available on Windows.
#include <strings.h>   // NOLINT
#include <sys/mman.h>  // NOLINT
#include <sys/time.h>  // NOLINT
#include <unistd.h>    // NOLINT

#include <string>

#elif defined(GTEST_OS_ZOS)
#include <sys/time.h>  // NOLINT

// On z/OS we additionally need strings.h for strcasecmp.
#include <strings.h>   // NOLINT

#elif defined(GTEST_OS_WINDOWS_MOBILE)  // We are on Windows CE.

#include <windows.h>  // NOLINT
#undef min

#elif defined(GTEST_OS_WINDOWS)  // We are on Windows proper.

#include <windows.h>  // NOLINT
#undef min

#ifdef _MSC_VER
#include <crtdbg.h>  // NOLINT
#endif

#include <io.h>         // NOLINT
#include <sys/stat.h>   // NOLINT
#include <sys/timeb.h>  // NOLINT
#include <sys/types.h>  // NOLINT

#ifdef GTEST_OS_WINDOWS_MINGW
#include <sys/time.h>  // NOLINT
#endif                 // GTEST_OS_WINDOWS_MINGW

#else

// cpplint thinks that the header is already included, so we want to
// silence it.
#include <sys/time.h>  // NOLINT
#include <unistd.h>    // NOLINT

#endif  // GTEST_OS_LINUX

#if GTEST_HAS_EXCEPTIONS
#include <stdexcept>
#endif

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

#include "src/gtest-internal-inl.h"

#ifdef GTEST_OS_WINDOWS
#define vsnprintf …
#endif  // GTEST_OS_WINDOWS

#ifdef GTEST_OS_MAC
#ifndef GTEST_OS_IOS
#include <crt_externs.h>
#endif
#endif

#ifdef GTEST_HAS_ABSL
#include "absl/container/flat_hash_set.h"
#include "absl/debugging/failure_signal_handler.h"
#include "absl/debugging/stacktrace.h"
#include "absl/debugging/symbolize.h"
#include "absl/flags/parse.h"
#include "absl/flags/usage.h"
#include "absl/strings/str_cat.h"
#include "absl/strings/str_replace.h"
#include "absl/strings/string_view.h"
#include "absl/strings/strip.h"
#endif  // GTEST_HAS_ABSL

// Checks builtin compiler feature |x| while avoiding an extra layer of #ifdefs
// at the callsite.
#if defined(__has_builtin)
#define GTEST_HAS_BUILTIN(x) …
#else
#define GTEST_HAS_BUILTIN …
#endif  // defined(__has_builtin)

namespace testing {

CountIf;
ForEach;
GetElementOr;
Shuffle;

// Constants.

// A test whose test suite name or test name matches this filter is
// disabled and not run.
static const char kDisableTestFilter[] = …;

// A test suite whose name matches this filter is considered a death
// test suite and will be run before test suites whose name doesn't
// match this filter.
static const char kDeathTestSuiteFilter[] = …;

// A test filter that matches everything.
static const char kUniversalFilter[] = …;

// The default output format.
static const char kDefaultOutputFormat[] = …;
// The default output file.
static const char kDefaultOutputFile[] = …;

// The environment variable name for the test shard index.
static const char kTestShardIndex[] = …;
// The environment variable name for the total number of test shards.
static const char kTestTotalShards[] = …;
// The environment variable name for the test shard status file.
static const char kTestShardStatusFile[] = …;

namespace internal {

// The text used in failure messages to indicate the start of the
// stack trace.
const char kStackTraceMarker[] = …;

// g_help_flag is true if and only if the --help flag or an equivalent form
// is specified on the command line.
bool g_help_flag = …;

#if GTEST_HAS_FILE_SYSTEM
// Utility function to Open File for Writing
static FILE* OpenFileForWriting(const std::string& output_file) { … }
#endif  // GTEST_HAS_FILE_SYSTEM

}  // namespace internal

// Bazel passes in the argument to '--test_filter' via the TESTBRIDGE_TEST_ONLY
// environment variable.
static const char* GetDefaultFilter() { … }

// Bazel passes in the argument to '--test_runner_fail_fast' via the
// TESTBRIDGE_TEST_RUNNER_FAIL_FAST environment variable.
static bool GetDefaultFailFast() { … }

}  // namespace testing

GTEST_DEFINE_bool_(
    fail_fast,
    testing::internal::BoolFromGTestEnv("fail_fast",
                                        testing::GetDefaultFailFast()),
    "True if and only if a test failure should stop further test execution.");

GTEST_DEFINE_bool_(
    also_run_disabled_tests,
    testing::internal::BoolFromGTestEnv("also_run_disabled_tests", false),
    "Run disabled tests too, in addition to the tests normally being run.");

GTEST_DEFINE_bool_(
    break_on_failure,
    testing::internal::BoolFromGTestEnv("break_on_failure", false),
    "True if and only if a failed assertion should be a debugger "
    "break-point.");

GTEST_DEFINE_bool_(catch_exceptions,
                   testing::internal::BoolFromGTestEnv("catch_exceptions",
                                                       true),
                   "True if and only if " GTEST_NAME_
                   " should catch exceptions and treat them as test failures.");

GTEST_DEFINE_string_(
    color, testing::internal::StringFromGTestEnv("color", "auto"),
    "Whether to use colors in the output.  Valid values: yes, no, "
    "and auto.  'auto' means to use colors if the output is "
    "being sent to a terminal and the TERM environment variable "
    "is set to a terminal type that supports colors.");

GTEST_DEFINE_string_(
    filter,
    testing::internal::StringFromGTestEnv("filter",
                                          testing::GetDefaultFilter()),
    "A colon-separated list of glob (not regex) patterns "
    "for filtering the tests to run, optionally followed by a "
    "'-' and a : separated list of negative patterns (tests to "
    "exclude).  A test is run if it matches one of the positive "
    "patterns and does not match any of the negative patterns.");

GTEST_DEFINE_bool_(
    install_failure_signal_handler,
    testing::internal::BoolFromGTestEnv("install_failure_signal_handler",
                                        false),
    "If true and supported on the current platform, " GTEST_NAME_
    " should "
    "install a signal handler that dumps debugging information when fatal "
    "signals are raised.");

GTEST_DEFINE_bool_(list_tests, false, "List all tests without running them.");

// The net priority order after flag processing is thus:
//   --gtest_output command line flag
//   GTEST_OUTPUT environment variable
//   XML_OUTPUT_FILE environment variable
//   ''
GTEST_DEFINE_string_(
    output,
    testing::internal::StringFromGTestEnv(
        "output", testing::internal::OutputFlagAlsoCheckEnvVar().c_str()),
    "A format (defaults to \"xml\" but can be specified to be \"json\"), "
    "optionally followed by a colon and an output file name or directory. "
    "A directory is indicated by a trailing pathname separator. "
    "Examples: \"xml:filename.xml\", \"xml::directoryname/\". "
    "If a directory is specified, output files will be created "
    "within that directory, with file-names based on the test "
    "executable's name and, if necessary, made unique by adding "
    "digits.");

GTEST_DEFINE_bool_(
    brief, testing::internal::BoolFromGTestEnv("brief", false),
    "True if only test failures should be displayed in text output.");

GTEST_DEFINE_bool_(print_time,
                   testing::internal::BoolFromGTestEnv("print_time", true),
                   "True if and only if " GTEST_NAME_
                   " should display elapsed time in text output.");

GTEST_DEFINE_bool_(print_utf8,
                   testing::internal::BoolFromGTestEnv("print_utf8", true),
                   "True if and only if " GTEST_NAME_
                   " prints UTF8 characters as text.");

GTEST_DEFINE_int32_(
    random_seed, testing::internal::Int32FromGTestEnv("random_seed", 0),
    "Random number seed to use when shuffling test orders.  Must be in range "
    "[1, 99999], or 0 to use a seed based on the current time.");

GTEST_DEFINE_int32_(
    repeat, testing::internal::Int32FromGTestEnv("repeat", 1),
    "How many times to repeat each test.  Specify a negative number "
    "for repeating forever.  Useful for shaking out flaky tests.");

GTEST_DEFINE_bool_(
    recreate_environments_when_repeating,
    testing::internal::BoolFromGTestEnv("recreate_environments_when_repeating",
                                        false),
    "Controls whether global test environments are recreated for each repeat "
    "of the tests. If set to false the global test environments are only set "
    "up once, for the first iteration, and only torn down once, for the last. "
    "Useful for shaking out flaky tests with stable, expensive test "
    "environments. If --gtest_repeat is set to a negative number, meaning "
    "there is no last run, the environments will always be recreated to avoid "
    "leaks.");

GTEST_DEFINE_bool_(show_internal_stack_frames, false,
                   "True if and only if " GTEST_NAME_
                   " should include internal stack frames when "
                   "printing test failure stack traces.");

GTEST_DEFINE_bool_(shuffle,
                   testing::internal::BoolFromGTestEnv("shuffle", false),
                   "True if and only if " GTEST_NAME_
                   " should randomize tests' order on every run.");

GTEST_DEFINE_int32_(
    stack_trace_depth,
    testing::internal::Int32FromGTestEnv("stack_trace_depth",
                                         testing::kMaxStackTraceDepth),
    "The maximum number of stack frames to print when an "
    "assertion fails.  The valid range is 0 through 100, inclusive.");

GTEST_DEFINE_string_(
    stream_result_to,
    testing::internal::StringFromGTestEnv("stream_result_to", ""),
    "This flag specifies the host name and the port number on which to stream "
    "test results. Example: \"localhost:555\". The flag is effective only on "
    "Linux.");

GTEST_DEFINE_bool_(
    throw_on_failure,
    testing::internal::BoolFromGTestEnv("throw_on_failure", false),
    "When this flag is specified, a failed assertion will throw an exception "
    "if exceptions are enabled or exit the program with a non-zero code "
    "otherwise. For use with an external test framework.");

#if GTEST_USE_OWN_FLAGFILE_FLAG_
GTEST_DEFINE_string_(
    flagfile, testing::internal::StringFromGTestEnv("flagfile", ""),
    "This flag specifies the flagfile to read command-line flags from.");
#endif  // GTEST_USE_OWN_FLAGFILE_FLAG_

namespace testing {
namespace internal {

const uint32_t Random::kMaxRange;

// Generates a random number from [0, range), using a Linear
// Congruential Generator (LCG).  Crashes if 'range' is 0 or greater
// than kMaxRange.
uint32_t Random::Generate(uint32_t range) { … }

// GTestIsInitialized() returns true if and only if the user has initialized
// Google Test.  Useful for catching the user mistake of not initializing
// Google Test before calling RUN_ALL_TESTS().
static bool GTestIsInitialized() { … }

// Iterates over a vector of TestSuites, keeping a running sum of the
// results of calling a given int-returning method on each.
// Returns the sum.
static int SumOverTestSuiteList(const std::vector<TestSuite*>& case_list,
                                int (TestSuite::*method)() const) { … }

// Returns true if and only if the test suite passed.
static bool TestSuitePassed(const TestSuite* test_suite) { … }

// Returns true if and only if the test suite failed.
static bool TestSuiteFailed(const TestSuite* test_suite) { … }

// Returns true if and only if test_suite contains at least one test that
// should run.
static bool ShouldRunTestSuite(const TestSuite* test_suite) { … }

// AssertHelper constructor.
AssertHelper::AssertHelper(TestPartResult::Type type, const char* file,
                           int line, const char* message)
    : … { … }

AssertHelper::~AssertHelper() { … }

// Message assignment, for assertion streaming support.
void AssertHelper::operator=(const Message& message) const { … }

namespace {

// When TEST_P is found without a matching INSTANTIATE_TEST_SUITE_P
// to creates test cases for it, a synthetic test case is
// inserted to report ether an error or a log message.
//
// This configuration bit will likely be removed at some point.
constexpr bool kErrorOnUninstantiatedParameterizedTest = …;
constexpr bool kErrorOnUninstantiatedTypeParameterizedTest = …;

// A test that fails at a given file/line location with a given message.
class FailureTest : public Test { … };

}  // namespace

std::set<std::string>* GetIgnoredParameterizedTestSuites() { … }

// Add a given test_suit to the list of them allow to go un-instantiated.
MarkAsIgnored::MarkAsIgnored(const char* test_suite) { … }

// If this parameterized test suite has no instantiations (and that
// has not been marked as okay), emit a test case reporting that.
void InsertSyntheticTestCase(const std::string& name, CodeLocation location,
                             bool has_test_p) { … }

void RegisterTypeParameterizedTestSuite(const char* test_suite_name,
                                        CodeLocation code_location) { … }

void RegisterTypeParameterizedTestSuiteInstantiation(const char* case_name) { … }

void TypeParameterizedTestSuiteRegistry::RegisterTestSuite(
    const char* test_suite_name, CodeLocation code_location) { … }

void TypeParameterizedTestSuiteRegistry::RegisterInstantiation(
    const char* test_suite_name) { … }

void TypeParameterizedTestSuiteRegistry::CheckForInstantiations() { … }

// A copy of all command line arguments.  Set by InitGoogleTest().
static ::std::vector<std::string> g_argvs;

::std::vector<std::string> GetArgvs() { … }

#if GTEST_HAS_FILE_SYSTEM
// Returns the current application's name, removing directory path if that
// is present.
FilePath GetCurrentExecutableName() { … }
#endif  // GTEST_HAS_FILE_SYSTEM

// Functions for processing the gtest_output flag.

// Returns the output format, or "" for normal printed output.
std::string UnitTestOptions::GetOutputFormat() { … }

#if GTEST_HAS_FILE_SYSTEM
// Returns the name of the requested output file, or the default if none
// was explicitly specified.
std::string UnitTestOptions::GetAbsolutePathToOutputFile() { … }
#endif  // GTEST_HAS_FILE_SYSTEM

// Returns true if and only if the wildcard pattern matches the string. Each
// pattern consists of regular characters, single-character wildcards (?), and
// multi-character wildcards (*).
//
// This function implements a linear-time string globbing algorithm based on
// https://research.swtch.com/glob.
static bool PatternMatchesString(const std::string& name_str,
                                 const char* pattern, const char* pattern_end) { … }

namespace {

bool IsGlobPattern(const std::string& pattern) { … }

class UnitTestFilter { … };

class PositiveAndNegativeUnitTestFilter { … };
}  // namespace

bool UnitTestOptions::MatchesFilter(const std::string& name_str,
                                    const char* filter) { … }

// Returns true if and only if the user-specified filter matches the test
// suite name and the test name.
bool UnitTestOptions::FilterMatchesTest(const std::string& test_suite_name,
                                        const std::string& test_name) { … }

#if GTEST_HAS_SEH
static std::string FormatSehExceptionMessage(DWORD exception_code,
                                             const char* location) {
  Message message;
  message << "SEH exception with code 0x" << std::setbase(16) << exception_code
          << std::setbase(10) << " thrown in " << location << ".";
  return message.GetString();
}

int UnitTestOptions::GTestProcessSEH(DWORD seh_code, const char* location) {
  // Google Test should handle a SEH exception if:
  //   1. the user wants it to, AND
  //   2. this is not a breakpoint exception or stack overflow, AND
  //   3. this is not a C++ exception (VC++ implements them via SEH,
  //      apparently).
  //
  // SEH exception code for C++ exceptions.
  // (see http://support.microsoft.com/kb/185294 for more information).
  const DWORD kCxxExceptionCode = 0xe06d7363;

  if (!GTEST_FLAG_GET(catch_exceptions) || seh_code == kCxxExceptionCode ||
      seh_code == EXCEPTION_BREAKPOINT ||
      seh_code == EXCEPTION_STACK_OVERFLOW) {
    return EXCEPTION_CONTINUE_SEARCH;  // Don't handle these exceptions
  }

  internal::ReportFailureInUnknownLocation(
      TestPartResult::kFatalFailure,
      FormatSehExceptionMessage(seh_code, location) +
          "\n"
          "Stack trace:\n" +
          ::testing::internal::GetCurrentOsStackTraceExceptTop(1));

  return EXCEPTION_EXECUTE_HANDLER;
}
#endif  // GTEST_HAS_SEH

}  // namespace internal

// The c'tor sets this object as the test part result reporter used by
// Google Test.  The 'result' parameter specifies where to report the
// results. Intercepts only failures from the current thread.
ScopedFakeTestPartResultReporter::ScopedFakeTestPartResultReporter(
    TestPartResultArray* result)
    : … { … }

// The c'tor sets this object as the test part result reporter used by
// Google Test.  The 'result' parameter specifies where to report the
// results.
ScopedFakeTestPartResultReporter::ScopedFakeTestPartResultReporter(
    InterceptMode intercept_mode, TestPartResultArray* result)
    : … { … }

void ScopedFakeTestPartResultReporter::Init() { … }

// The d'tor restores the test part result reporter used by Google Test
// before.
ScopedFakeTestPartResultReporter::~ScopedFakeTestPartResultReporter() { … }

// Increments the test part result count and remembers the result.
// This method is from the TestPartResultReporterInterface interface.
void ScopedFakeTestPartResultReporter::ReportTestPartResult(
    const TestPartResult& result) { … }

namespace internal {

// Returns the type ID of ::testing::Test.  We should always call this
// instead of GetTypeId< ::testing::Test>() to get the type ID of
// testing::Test.  This is to work around a suspected linker bug when
// using Google Test as a framework on Mac OS X.  The bug causes
// GetTypeId< ::testing::Test>() to return different values depending
// on whether the call is from the Google Test framework itself or
// from user test code.  GetTestTypeId() is guaranteed to always
// return the same value, as it always calls GetTypeId<>() from the
// gtest.cc, which is within the Google Test framework.
TypeId GetTestTypeId() { … }

// The value of GetTestTypeId() as seen from within the Google Test
// library.  This is solely for testing GetTestTypeId().
extern const TypeId kTestTypeIdInGoogleTest = …;

// This predicate-formatter checks that 'results' contains a test part
// failure of the given type and that the failure message contains the
// given substring.
static AssertionResult HasOneFailure(const char* /* results_expr */,
                                     const char* /* type_expr */,
                                     const char* /* substr_expr */,
                                     const TestPartResultArray& results,
                                     TestPartResult::Type type,
                                     const std::string& substr) { … }

// The constructor of SingleFailureChecker remembers where to look up
// test part results, what type of failure we expect, and what
// substring the failure message should contain.
SingleFailureChecker::SingleFailureChecker(const TestPartResultArray* results,
                                           TestPartResult::Type type,
                                           const std::string& substr)
    : … { … }

// The destructor of SingleFailureChecker verifies that the given
// TestPartResultArray contains exactly one failure that has the given
// type and contains the given substring.  If that's not the case, a
// non-fatal failure will be generated.
SingleFailureChecker::~SingleFailureChecker() { … }

DefaultGlobalTestPartResultReporter::DefaultGlobalTestPartResultReporter(
    UnitTestImpl* unit_test)
    : … { … }

void DefaultGlobalTestPartResultReporter::ReportTestPartResult(
    const TestPartResult& result) { … }

DefaultPerThreadTestPartResultReporter::DefaultPerThreadTestPartResultReporter(
    UnitTestImpl* unit_test)
    : … { … }

void DefaultPerThreadTestPartResultReporter::ReportTestPartResult(
    const TestPartResult& result) { … }

// Returns the global test part result reporter.
TestPartResultReporterInterface*
UnitTestImpl::GetGlobalTestPartResultReporter() { … }

// Sets the global test part result reporter.
void UnitTestImpl::SetGlobalTestPartResultReporter(
    TestPartResultReporterInterface* reporter) { … }

// Returns the test part result reporter for the current thread.
TestPartResultReporterInterface*
UnitTestImpl::GetTestPartResultReporterForCurrentThread() { … }

// Sets the test part result reporter for the current thread.
void UnitTestImpl::SetTestPartResultReporterForCurrentThread(
    TestPartResultReporterInterface* reporter) { … }

// Gets the number of successful test suites.
int UnitTestImpl::successful_test_suite_count() const { … }

// Gets the number of failed test suites.
int UnitTestImpl::failed_test_suite_count() const { … }

// Gets the number of all test suites.
int UnitTestImpl::total_test_suite_count() const { … }

// Gets the number of all test suites that contain at least one test
// that should run.
int UnitTestImpl::test_suite_to_run_count() const { … }

// Gets the number of successful tests.
int UnitTestImpl::successful_test_count() const { … }

// Gets the number of skipped tests.
int UnitTestImpl::skipped_test_count() const { … }

// Gets the number of failed tests.
int UnitTestImpl::failed_test_count() const { … }

// Gets the number of disabled tests that will be reported in the XML report.
int UnitTestImpl::reportable_disabled_test_count() const { … }

// Gets the number of disabled tests.
int UnitTestImpl::disabled_test_count() const { … }

// Gets the number of tests to be printed in the XML report.
int UnitTestImpl::reportable_test_count() const { … }

// Gets the number of all tests.
int UnitTestImpl::total_test_count() const { … }

// Gets the number of tests that should run.
int UnitTestImpl::test_to_run_count() const { … }

// 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 UnitTestImpl::CurrentOsStackTraceExceptTop(int skip_count) { … }

// A helper class for measuring elapsed times.
class Timer { … };

// Returns a timestamp as milliseconds since the epoch. Note this time may jump
// around subject to adjustments by the system, to measure elapsed time use
// Timer instead.
TimeInMillis GetTimeInMillis() { … }

// Utilities

// class String.

#ifdef GTEST_OS_WINDOWS_MOBILE
// Creates a UTF-16 wide string from the given ANSI string, allocating
// memory using new. The caller is responsible for deleting the return
// value using delete[]. Returns the wide string, or NULL if the
// input is NULL.
LPCWSTR String::AnsiToUtf16(const char* ansi) {
  if (!ansi) return nullptr;
  const int length = strlen(ansi);
  const int unicode_length =
      MultiByteToWideChar(CP_ACP, 0, ansi, length, nullptr, 0);
  WCHAR* unicode = new WCHAR[unicode_length + 1];
  MultiByteToWideChar(CP_ACP, 0, ansi, length, unicode, unicode_length);
  unicode[unicode_length] = 0;
  return unicode;
}

// Creates an ANSI string from the given wide string, allocating
// memory using new. The caller is responsible for deleting the return
// value using delete[]. Returns the ANSI string, or NULL if the
// input is NULL.
const char* String::Utf16ToAnsi(LPCWSTR utf16_str) {
  if (!utf16_str) return nullptr;
  const int ansi_length = WideCharToMultiByte(CP_ACP, 0, utf16_str, -1, nullptr,
                                              0, nullptr, nullptr);
  char* ansi = new char[ansi_length + 1];
  WideCharToMultiByte(CP_ACP, 0, utf16_str, -1, ansi, ansi_length, nullptr,
                      nullptr);
  ansi[ansi_length] = 0;
  return ansi;
}

#endif  // GTEST_OS_WINDOWS_MOBILE

// Compares two C strings.  Returns true if and only if they have the same
// content.
//
// Unlike strcmp(), this function can handle NULL argument(s).  A NULL
// C string is considered different to any non-NULL C string,
// including the empty string.
bool String::CStringEquals(const char* lhs, const char* rhs) { … }

#if GTEST_HAS_STD_WSTRING

// Converts an array of wide chars to a narrow string using the UTF-8
// encoding, and streams the result to the given Message object.
static void StreamWideCharsToMessage(const wchar_t* wstr, size_t length,
                                     Message* msg) { … }

#endif  // GTEST_HAS_STD_WSTRING

void SplitString(const ::std::string& str, char delimiter,
                 ::std::vector< ::std::string>* dest) { … }

}  // namespace internal

// Constructs an empty Message.
// We allocate the stringstream separately because otherwise each use of
// ASSERT/EXPECT in a procedure adds over 200 bytes to the procedure's
// stack frame leading to huge stack frames in some cases; gcc does not reuse
// the stack space.
Message::Message() : … { … }

// These two overloads allow streaming a wide C string to a Message
// using the UTF-8 encoding.
Message& Message::operator<<(const wchar_t* wide_c_str) { … }
Message& Message::operator<<(wchar_t* wide_c_str) { … }

#if GTEST_HAS_STD_WSTRING
// Converts the given wide string to a narrow string using the UTF-8
// encoding, and streams the result to this Message object.
Message& Message::operator<<(const ::std::wstring& wstr) { … }
#endif  // GTEST_HAS_STD_WSTRING

// Gets the text streamed to this object so far as an std::string.
// Each '\0' character in the buffer is replaced with "\\0".
std::string Message::GetString() const { … }

namespace internal {

namespace edit_distance {
std::vector<EditType> CalculateOptimalEdits(const std::vector<size_t>& left,
                                            const std::vector<size_t>& right) { … }

namespace {

// Helper class to convert string into ids with deduplication.
class InternalStrings { … };

}  // namespace

std::vector<EditType> CalculateOptimalEdits(
    const std::vector<std::string>& left,
    const std::vector<std::string>& right) { … }

namespace {

// Helper class that holds the state for one hunk and prints it out to the
// stream.
// It reorders adds/removes when possible to group all removes before all
// adds. It also adds the hunk header before printint into the stream.
class Hunk { … };

}  // namespace

// Create a list of diff hunks in Unified diff format.
// Each hunk has a header generated by PrintHeader above plus a body with
// lines prefixed with ' ' for no change, '-' for deletion and '+' for
// addition.
// 'context' represents the desired unchanged prefix/suffix around the diff.
// If two hunks are close enough that their contexts overlap, then they are
// joined into one hunk.
std::string CreateUnifiedDiff(const std::vector<std::string>& left,
                              const std::vector<std::string>& right,
                              size_t context) { … }

}  // namespace edit_distance

namespace {

// The string representation of the values received in EqFailure() are already
// escaped. Split them on escaped '\n' boundaries. Leave all other escaped
// characters the same.
std::vector<std::string> SplitEscapedString(const std::string& str) { … }

}  // namespace

// Constructs and returns the message for an equality assertion
// (e.g. ASSERT_EQ, EXPECT_STREQ, etc) failure.
//
// The first four parameters are the expressions used in the assertion
// and their values, as strings.  For example, for ASSERT_EQ(foo, bar)
// where foo is 5 and bar is 6, we have:
//
//   lhs_expression: "foo"
//   rhs_expression: "bar"
//   lhs_value:      "5"
//   rhs_value:      "6"
//
// The ignoring_case parameter is true if and only if the assertion is a
// *_STRCASEEQ*.  When it's true, the string "Ignoring case" will
// be inserted into the message.
AssertionResult EqFailure(const char* lhs_expression,
                          const char* rhs_expression,
                          const std::string& lhs_value,
                          const std::string& rhs_value, bool ignoring_case) { … }

// Constructs a failure message for Boolean assertions such as EXPECT_TRUE.
std::string GetBoolAssertionFailureMessage(
    const AssertionResult& assertion_result, const char* expression_text,
    const char* actual_predicate_value, const char* expected_predicate_value) { … }

// Helper function for implementing ASSERT_NEAR.
AssertionResult DoubleNearPredFormat(const char* expr1, const char* expr2,
                                     const char* abs_error_expr, double val1,
                                     double val2, double abs_error) { … }

// Helper template for implementing FloatLE() and DoubleLE().
template <typename RawType>
AssertionResult FloatingPointLE(const char* expr1, const char* expr2,
                                RawType val1, RawType val2) { … }

}  // namespace internal

// Asserts that val1 is less than, or almost equal to, val2.  Fails
// otherwise.  In particular, it fails if either val1 or val2 is NaN.
AssertionResult FloatLE(const char* expr1, const char* expr2, float val1,
                        float val2) { … }

// Asserts that val1 is less than, or almost equal to, val2.  Fails
// otherwise.  In particular, it fails if either val1 or val2 is NaN.
AssertionResult DoubleLE(const char* expr1, const char* expr2, double val1,
                         double val2) { … }

namespace internal {

// The helper function for {ASSERT|EXPECT}_STREQ.
AssertionResult CmpHelperSTREQ(const char* lhs_expression,
                               const char* rhs_expression, const char* lhs,
                               const char* rhs) { … }

// The helper function for {ASSERT|EXPECT}_STRCASEEQ.
AssertionResult CmpHelperSTRCASEEQ(const char* lhs_expression,
                                   const char* rhs_expression, const char* lhs,
                                   const char* rhs) { … }

// The helper function for {ASSERT|EXPECT}_STRNE.
AssertionResult CmpHelperSTRNE(const char* s1_expression,
                               const char* s2_expression, const char* s1,
                               const char* s2) { … }

// The helper function for {ASSERT|EXPECT}_STRCASENE.
AssertionResult CmpHelperSTRCASENE(const char* s1_expression,
                                   const char* s2_expression, const char* s1,
                                   const char* s2) { … }

}  // namespace internal

namespace {

// Helper functions for implementing IsSubString() and IsNotSubstring().

// This group of overloaded functions return true if and only if needle
// is a substring of haystack.  NULL is considered a substring of
// itself only.

bool IsSubstringPred(const char* needle, const char* haystack) { … }

bool IsSubstringPred(const wchar_t* needle, const wchar_t* haystack) { … }

// StringType here can be either ::std::string or ::std::wstring.
template <typename StringType>
bool IsSubstringPred(const StringType& needle, const StringType& haystack) { … }

// This function implements either IsSubstring() or IsNotSubstring(),
// depending on the value of the expected_to_be_substring parameter.
// StringType here can be const char*, const wchar_t*, ::std::string,
// or ::std::wstring.
template <typename StringType>
AssertionResult IsSubstringImpl(bool expected_to_be_substring,
                                const char* needle_expr,
                                const char* haystack_expr,
                                const StringType& needle,
                                const StringType& haystack) { … }

}  // namespace

// IsSubstring() and IsNotSubstring() check whether needle is a
// substring of haystack (NULL is considered a substring of itself
// only), and return an appropriate error message when they fail.

AssertionResult IsSubstring(const char* needle_expr, const char* haystack_expr,
                            const char* needle, const char* haystack) { … }

AssertionResult IsSubstring(const char* needle_expr, const char* haystack_expr,
                            const wchar_t* needle, const wchar_t* haystack) { … }

AssertionResult IsNotSubstring(const char* needle_expr,
                               const char* haystack_expr, const char* needle,
                               const char* haystack) { … }

AssertionResult IsNotSubstring(const char* needle_expr,
                               const char* haystack_expr, const wchar_t* needle,
                               const wchar_t* haystack) { … }

AssertionResult IsSubstring(const char* needle_expr, const char* haystack_expr,
                            const ::std::string& needle,
                            const ::std::string& haystack) { … }

AssertionResult IsNotSubstring(const char* needle_expr,
                               const char* haystack_expr,
                               const ::std::string& needle,
                               const ::std::string& haystack) { … }

#if GTEST_HAS_STD_WSTRING
AssertionResult IsSubstring(const char* needle_expr, const char* haystack_expr,
                            const ::std::wstring& needle,
                            const ::std::wstring& haystack) { … }

AssertionResult IsNotSubstring(const char* needle_expr,
                               const char* haystack_expr,
                               const ::std::wstring& needle,
                               const ::std::wstring& haystack) { … }
#endif  // GTEST_HAS_STD_WSTRING

namespace internal {

#ifdef GTEST_OS_WINDOWS

namespace {

// Helper function for IsHRESULT{SuccessFailure} predicates
AssertionResult HRESULTFailureHelper(const char* expr, const char* expected,
                                     long hr) {  // NOLINT
#if defined(GTEST_OS_WINDOWS_MOBILE) || defined(GTEST_OS_WINDOWS_TV_TITLE)

  // Windows CE doesn't support FormatMessage.
  const char error_text[] = "";

#else

  // Looks up the human-readable system message for the HRESULT code
  // and since we're not passing any params to FormatMessage, we don't
  // want inserts expanded.
  const DWORD kFlags =
      FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS;
  const DWORD kBufSize = 4096;
  // Gets the system's human readable message string for this HRESULT.
  char error_text[kBufSize] = {'\0'};
  DWORD message_length = ::FormatMessageA(kFlags,
                                          0,  // no source, we're asking system
                                          static_cast<DWORD>(hr),  // the error
                                          0,  // no line width restrictions
                                          error_text,  // output buffer
                                          kBufSize,    // buf size
                                          nullptr);  // no arguments for inserts
  // Trims tailing white space (FormatMessage leaves a trailing CR-LF)
  for (; message_length && IsSpace(error_text[message_length - 1]);
       --message_length) {
    error_text[message_length - 1] = '\0';
  }

#endif  // GTEST_OS_WINDOWS_MOBILE

  const std::string error_hex("0x" + String::FormatHexInt(hr));
  return ::testing::AssertionFailure()
         << "Expected: " << expr << " " << expected << ".\n"
         << "  Actual: " << error_hex << " " << error_text << "\n";
}

}  // namespace

AssertionResult IsHRESULTSuccess(const char* expr, long hr) {  // NOLINT
  if (SUCCEEDED(hr)) {
    return AssertionSuccess();
  }
  return HRESULTFailureHelper(expr, "succeeds", hr);
}

AssertionResult IsHRESULTFailure(const char* expr, long hr) {  // NOLINT
  if (FAILED(hr)) {
    return AssertionSuccess();
  }
  return HRESULTFailureHelper(expr, "fails", hr);
}

#endif  // GTEST_OS_WINDOWS

// Utility functions for encoding Unicode text (wide strings) in
// UTF-8.

// A Unicode code-point can have up to 21 bits, and is encoded in UTF-8
// like this:
//
// Code-point length   Encoding
//   0 -  7 bits       0xxxxxxx
//   8 - 11 bits       110xxxxx 10xxxxxx
//  12 - 16 bits       1110xxxx 10xxxxxx 10xxxxxx
//  17 - 21 bits       11110xxx 10xxxxxx 10xxxxxx 10xxxxxx

// The maximum code-point a one-byte UTF-8 sequence can represent.
constexpr uint32_t kMaxCodePoint1 = …;

// The maximum code-point a two-byte UTF-8 sequence can represent.
constexpr uint32_t kMaxCodePoint2 = …;

// The maximum code-point a three-byte UTF-8 sequence can represent.
constexpr uint32_t kMaxCodePoint3 = …;

// The maximum code-point a four-byte UTF-8 sequence can represent.
constexpr uint32_t kMaxCodePoint4 = …;

// Chops off the n lowest bits from a bit pattern.  Returns the n
// lowest bits.  As a side effect, the original bit pattern will be
// shifted to the right by n bits.
inline uint32_t ChopLowBits(uint32_t* bits, int n) { … }

// Converts a Unicode code point to a narrow string in UTF-8 encoding.
// code_point parameter is of type uint32_t 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)".
std::string CodePointToUtf8(uint32_t code_point) { … }

// The following two functions only make sense if the system
// uses UTF-16 for wide string encoding. All supported systems
// with 16 bit wchar_t (Windows, Cygwin) do use UTF-16.

// Determines if the arguments constitute UTF-16 surrogate pair
// and thus should be combined into a single Unicode code point
// using CreateCodePointFromUtf16SurrogatePair.
inline bool IsUtf16SurrogatePair(wchar_t first, wchar_t second) { … }

// Creates a Unicode code point from UTF16 surrogate pair.
inline uint32_t CreateCodePointFromUtf16SurrogatePair(wchar_t first,
                                                      wchar_t second) { … }

// 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.
std::string WideStringToUtf8(const wchar_t* str, int num_chars) { … }

// Converts a wide C string to an std::string using the UTF-8 encoding.
// NULL will be converted to "(null)".
std::string String::ShowWideCString(const wchar_t* wide_c_str) { … }

// Compares two wide C strings.  Returns true if and only if they have the
// same content.
//
// Unlike wcscmp(), this function can handle NULL argument(s).  A NULL
// C string is considered different to any non-NULL C string,
// including the empty string.
bool String::WideCStringEquals(const wchar_t* lhs, const wchar_t* rhs) { … }

// Helper function for *_STREQ on wide strings.
AssertionResult CmpHelperSTREQ(const char* lhs_expression,
                               const char* rhs_expression, const wchar_t* lhs,
                               const wchar_t* rhs) { … }

// Helper function for *_STRNE on wide strings.
AssertionResult CmpHelperSTRNE(const char* s1_expression,
                               const char* s2_expression, const wchar_t* s1,
                               const wchar_t* s2) { … }

// Compares two C strings, ignoring case.  Returns true if and only if they have
// the same content.
//
// Unlike strcasecmp(), this function can handle NULL argument(s).  A
// NULL C string is considered different to any non-NULL C string,
// including the empty string.
bool String::CaseInsensitiveCStringEquals(const char* lhs, const char* rhs) { … }

// Compares two wide C strings, ignoring case.  Returns true if and only if they
// have the same content.
//
// Unlike wcscasecmp(), this function can handle NULL argument(s).
// A NULL C string is considered different to any non-NULL wide C string,
// including the empty string.
// NB: The implementations on different platforms slightly differ.
// On windows, this method uses _wcsicmp which compares according to LC_CTYPE
// environment variable. On GNU platform this method uses wcscasecmp
// which compares according to LC_CTYPE category of the current locale.
// On MacOS X, it uses towlower, which also uses LC_CTYPE category of the
// current locale.
bool String::CaseInsensitiveWideCStringEquals(const wchar_t* lhs,
                                              const wchar_t* rhs) { … }

// Returns true if and only if str ends with the given suffix, ignoring case.
// Any string is considered to end with an empty suffix.
bool String::EndsWithCaseInsensitive(const std::string& str,
                                     const std::string& suffix) { … }

// Formats an int value as "%02d".
std::string String::FormatIntWidth2(int value) { … }

// Formats an int value to given width with leading zeros.
std::string String::FormatIntWidthN(int value, int width) { … }

// Formats an int value as "%X".
std::string String::FormatHexUInt32(uint32_t value) { … }

// Formats an int value as "%X".
std::string String::FormatHexInt(int value) { … }

// Formats a byte as "%02X".
std::string String::FormatByte(unsigned char value) { … }

// Converts the buffer in a stringstream to an std::string, converting NUL
// bytes to "\\0" along the way.
std::string StringStreamToString(::std::stringstream* ss) { … }

// Appends the user-supplied message to the Google-Test-generated message.
std::string AppendUserMessage(const std::string& gtest_msg,
                              const Message& user_msg) { … }

}  // namespace internal

// class TestResult

// Creates an empty TestResult.
TestResult::TestResult()
    : … { … }

// D'tor.
TestResult::~TestResult() = default;

// Returns the i-th test part result among all the results. i can
// range from 0 to total_part_count() - 1. If i is not in that range,
// aborts the program.
const TestPartResult& TestResult::GetTestPartResult(int i) const { … }

// Returns the i-th test property. i can range from 0 to
// test_property_count() - 1. If i is not in that range, aborts the
// program.
const TestProperty& TestResult::GetTestProperty(int i) const { … }

// Clears the test part results.
void TestResult::ClearTestPartResults() { … }

// Adds a test part result to the list.
void TestResult::AddTestPartResult(const TestPartResult& test_part_result) { … }

// Adds a test property to the list. If a property with the same key as the
// supplied property is already represented, the value of this test_property
// replaces the old value for that key.
void TestResult::RecordProperty(const std::string& xml_element,
                                const TestProperty& test_property) { … }

// The list of reserved attributes used in the <testsuites> element of XML
// output.
static const char* const kReservedTestSuitesAttributes[] = …;

// The list of reserved attributes used in the <testsuite> element of XML
// output.
static const char* const kReservedTestSuiteAttributes[] = …;

// The list of reserved attributes used in the <testcase> element of XML output.
static const char* const kReservedTestCaseAttributes[] = …;

// Use a slightly different set for allowed output to ensure existing tests can
// still RecordProperty("result") or "RecordProperty(timestamp")
static const char* const kReservedOutputTestCaseAttributes[] = …;

template <size_t kSize>
std::vector<std::string> ArrayAsVector(const char* const (&array)[kSize]) { … }

static std::vector<std::string> GetReservedAttributesForElement(
    const std::string& xml_element) { … }

#if GTEST_HAS_FILE_SYSTEM
// TODO(jdesprez): Merge the two getReserved attributes once skip is improved
// This function is only used when file systems are enabled.
static std::vector<std::string> GetReservedOutputAttributesForElement(
    const std::string& xml_element) { … }
#endif

static std::string FormatWordList(const std::vector<std::string>& words) { … }

static bool ValidateTestPropertyName(
    const std::string& property_name,
    const std::vector<std::string>& reserved_names) { … }

// Adds a failure if the key is a reserved attribute of the element named
// xml_element.  Returns true if the property is valid.
bool TestResult::ValidateTestProperty(const std::string& xml_element,
                                      const TestProperty& test_property) { … }

// Clears the object.
void TestResult::Clear() { … }

// Returns true off the test part was skipped.
static bool TestPartSkipped(const TestPartResult& result) { … }

// Returns true if and only if the test was skipped.
bool TestResult::Skipped() const { … }

// Returns true if and only if the test failed.
bool TestResult::Failed() const { … }

// Returns true if and only if the test part fatally failed.
static bool TestPartFatallyFailed(const TestPartResult& result) { … }

// Returns true if and only if the test fatally failed.
bool TestResult::HasFatalFailure() const { … }

// Returns true if and only if the test part non-fatally failed.
static bool TestPartNonfatallyFailed(const TestPartResult& result) { … }

// Returns true if and only if the test has a non-fatal failure.
bool TestResult::HasNonfatalFailure() const { … }

// Gets the number of all test parts.  This is the sum of the number
// of successful test parts and the number of failed test parts.
int TestResult::total_part_count() const { … }

// Returns the number of the test properties.
int TestResult::test_property_count() const { … }

// class Test

// Creates a Test object.

// The c'tor saves the states of all flags.
Test::Test() : … { … }

// The d'tor restores the states of all flags.  The actual work is
// done by the d'tor of the gtest_flag_saver_ field, and thus not
// visible here.
Test::~Test() = default;

// Sets up the test fixture.
//
// A sub-class may override this.
void Test::SetUp() { … }

// Tears down the test fixture.
//
// A sub-class may override this.
void Test::TearDown() { … }

// Allows user supplied key value pairs to be recorded for later output.
void Test::RecordProperty(const std::string& key, const std::string& value) { … }

namespace internal {

void ReportFailureInUnknownLocation(TestPartResult::Type result_type,
                                    const std::string& message) { … }

}  // namespace internal

// Google Test requires all tests in the same test suite to use the same test
// fixture class.  This function checks if the current test has the
// same fixture class as the first test in the current test suite.  If
// yes, it returns true; otherwise it generates a Google Test failure and
// returns false.
bool Test::HasSameFixtureClass() { … }

namespace internal {

#if GTEST_HAS_EXCEPTIONS

// Adds an "exception thrown" fatal failure to the current test.
static std::string FormatCxxExceptionMessage(const char* description,
                                             const char* location) {
  Message message;
  if (description != nullptr) {
    message << "C++ exception with description \"" << description << "\"";
  } else {
    message << "Unknown C++ exception";
  }
  message << " thrown in " << location << ".";

  return message.GetString();
}

static std::string PrintTestPartResultToString(
    const TestPartResult& test_part_result);

GoogleTestFailureException::GoogleTestFailureException(
    const TestPartResult& failure)
    : ::std::runtime_error(PrintTestPartResultToString(failure).c_str()) {}

#endif  // GTEST_HAS_EXCEPTIONS

// We put these helper functions in the internal namespace as IBM's xlC
// compiler rejects the code if they were declared static.

// Runs the given method and handles SEH exceptions it throws, when
// SEH is supported; returns the 0-value for type Result in case of an
// SEH exception.  (Microsoft compilers cannot handle SEH and C++
// exceptions in the same function.  Therefore, we provide a separate
// wrapper function for handling SEH exceptions.)
template <class T, typename Result>
Result HandleSehExceptionsInMethodIfSupported(T* object, Result (T::*method)(),
                                              const char* location) { … }

// Runs the given method and catches and reports C++ and/or SEH-style
// exceptions, if they are supported; returns the 0-value for type
// Result in case of an SEH exception.
template <class T, typename Result>
Result HandleExceptionsInMethodIfSupported(T* object, Result (T::*method)(),
                                           const char* location) { … }

}  // namespace internal

// Runs the test and updates the test result.
void Test::Run() { … }

// Returns true if and only if the current test has a fatal failure.
bool Test::HasFatalFailure() { … }

// Returns true if and only if the current test has a non-fatal failure.
bool Test::HasNonfatalFailure() { … }

// Returns true if and only if the current test was skipped.
bool Test::IsSkipped() { … }

// class TestInfo

// Constructs a TestInfo object. It assumes ownership of the test factory
// object.
TestInfo::TestInfo(const std::string& a_test_suite_name,
                   const std::string& a_name, const char* a_type_param,
                   const char* a_value_param,
                   internal::CodeLocation a_code_location,
                   internal::TypeId fixture_class_id,
                   internal::TestFactoryBase* factory)
    : … { … }

// Destructs a TestInfo object.
TestInfo::~TestInfo() { … }

namespace internal {

// Creates a new TestInfo object and registers it with Google Test;
// returns the created object.
//
// Arguments:
//
//   test_suite_name:  name of the test suite
//   name:             name of the test
//   type_param:       the name of the test's type parameter, or NULL if
//                     this is not a typed or a type-parameterized test.
//   value_param:      text representation of the test's value parameter,
//                     or NULL if this is not a value-parameterized test.
//   code_location:    code location where the test is defined
//   fixture_class_id: ID of the test fixture class
//   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
//   factory:          pointer to the factory that creates a test object.
//                     The newly created TestInfo instance will assume
//                     ownership of the factory object.
TestInfo* MakeAndRegisterTestInfo(
    const char* test_suite_name, const char* name, const char* type_param,
    const char* value_param, CodeLocation code_location,
    TypeId fixture_class_id, SetUpTestSuiteFunc set_up_tc,
    TearDownTestSuiteFunc tear_down_tc, TestFactoryBase* factory) { … }

void ReportInvalidTestSuiteType(const char* test_suite_name,
                                CodeLocation code_location) { … }

// This method expands all parameterized tests registered with macros TEST_P
// and INSTANTIATE_TEST_SUITE_P into regular tests and registers those.
// This will be done just once during the program runtime.
void UnitTestImpl::RegisterParameterizedTests() { … }

}  // namespace internal

// Creates the test object, runs it, records its result, and then
// deletes it.
void TestInfo::Run() { … }

// Skip and records a skipped test result for this object.
void TestInfo::Skip() { … }

// class TestSuite

// Gets the number of successful tests in this test suite.
int TestSuite::successful_test_count() const { … }

// Gets the number of successful tests in this test suite.
int TestSuite::skipped_test_count() const { … }

// Gets the number of failed tests in this test suite.
int TestSuite::failed_test_count() const { … }

// Gets the number of disabled tests that will be reported in the XML report.
int TestSuite::reportable_disabled_test_count() const { … }

// Gets the number of disabled tests in this test suite.
int TestSuite::disabled_test_count() const { … }

// Gets the number of tests to be printed in the XML report.
int TestSuite::reportable_test_count() const { … }

// Get the number of tests in this test suite that should run.
int TestSuite::test_to_run_count() const { … }

// Gets the number of all tests.
int TestSuite::total_test_count() const { … }

// Creates a TestSuite with the given name.
//
// Arguments:
//
//   a_name:       name of the test suite
//   a_type_param: the name of the test suite's type parameter, or NULL if
//                 this is not a typed or a type-parameterized test suite.
//   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::TestSuite(const char* a_name, const char* a_type_param,
                     internal::SetUpTestSuiteFunc set_up_tc,
                     internal::TearDownTestSuiteFunc tear_down_tc)
    : … { … }

// Destructor of TestSuite.
TestSuite::~TestSuite() { … }

// Returns the i-th test among all the tests. i can range from 0 to
// total_test_count() - 1. If i is not in that range, returns NULL.
const TestInfo* TestSuite::GetTestInfo(int i) const { … }

// Returns the i-th test among all the tests. i can range from 0 to
// total_test_count() - 1. If i is not in that range, returns NULL.
TestInfo* TestSuite::GetMutableTestInfo(int i) { … }

// Adds a test to this test suite.  Will delete the test upon
// destruction of the TestSuite object.
void TestSuite::AddTestInfo(TestInfo* test_info) { … }

// Runs every test in this TestSuite.
void TestSuite::Run() { … }

// Skips all tests under this TestSuite.
void TestSuite::Skip() { … }

// Clears the results of all tests in this test suite.
void TestSuite::ClearResult() { … }

// Shuffles the tests in this test suite.
void TestSuite::ShuffleTests(internal::Random* random) { … }

// Restores the test order to before the first shuffle.
void TestSuite::UnshuffleTests() { … }

// Formats a countable noun.  Depending on its quantity, either the
// singular form or the plural form is used. e.g.
//
// FormatCountableNoun(1, "formula", "formuli") returns "1 formula".
// FormatCountableNoun(5, "book", "books") returns "5 books".
static std::string FormatCountableNoun(int count, const char* singular_form,
                                       const char* plural_form) { … }

// Formats the count of tests.
static std::string FormatTestCount(int test_count) { … }

// Formats the count of test suites.
static std::string FormatTestSuiteCount(int test_suite_count) { … }

// Converts a TestPartResult::Type enum to human-friendly string
// representation.  Both kNonFatalFailure and kFatalFailure are translated
// to "Failure", as the user usually doesn't care about the difference
// between the two when viewing the test result.
static const char* TestPartResultTypeToString(TestPartResult::Type type) { … }

namespace internal {
namespace {
enum class GTestColor { … };
}  // namespace

// Prints a TestPartResult to an std::string.
static std::string PrintTestPartResultToString(
    const TestPartResult& test_part_result) { … }

// Prints a TestPartResult.
static void PrintTestPartResult(const TestPartResult& test_part_result) { … }

// class PrettyUnitTestResultPrinter
#if defined(GTEST_OS_WINDOWS) && !defined(GTEST_OS_WINDOWS_MOBILE) &&    \
    !defined(GTEST_OS_WINDOWS_PHONE) && !defined(GTEST_OS_WINDOWS_RT) && \
    !defined(GTEST_OS_WINDOWS_MINGW)

// Returns the character attribute for the given color.
static WORD GetColorAttribute(GTestColor color) {
  switch (color) {
    case GTestColor::kRed:
      return FOREGROUND_RED;
    case GTestColor::kGreen:
      return FOREGROUND_GREEN;
    case GTestColor::kYellow:
      return FOREGROUND_RED | FOREGROUND_GREEN;
    default:
      return 0;
  }
}

static int GetBitOffset(WORD color_mask) {
  if (color_mask == 0) return 0;

  int bitOffset = 0;
  while ((color_mask & 1) == 0) {
    color_mask >>= 1;
    ++bitOffset;
  }
  return bitOffset;
}

static WORD GetNewColor(GTestColor color, WORD old_color_attrs) {
  // Let's reuse the BG
  static const WORD background_mask = BACKGROUND_BLUE | BACKGROUND_GREEN |
                                      BACKGROUND_RED | BACKGROUND_INTENSITY;
  static const WORD foreground_mask = FOREGROUND_BLUE | FOREGROUND_GREEN |
                                      FOREGROUND_RED | FOREGROUND_INTENSITY;
  const WORD existing_bg = old_color_attrs & background_mask;

  WORD new_color =
      GetColorAttribute(color) | existing_bg | FOREGROUND_INTENSITY;
  static const int bg_bitOffset = GetBitOffset(background_mask);
  static const int fg_bitOffset = GetBitOffset(foreground_mask);

  if (((new_color & background_mask) >> bg_bitOffset) ==
      ((new_color & foreground_mask) >> fg_bitOffset)) {
    new_color ^= FOREGROUND_INTENSITY;  // invert intensity
  }
  return new_color;
}

#else

// Returns the ANSI color code for the given color. GTestColor::kDefault is
// an invalid input.
static const char* GetAnsiColorCode(GTestColor color) { … }

#endif  // GTEST_OS_WINDOWS && !GTEST_OS_WINDOWS_MOBILE

// Returns true if and only if Google Test should use colors in the output.
bool ShouldUseColor(bool stdout_is_tty) { … }

// Helpers for printing colored strings to stdout. Note that on Windows, we
// cannot simply emit special characters and have the terminal change colors.
// This routine must actually emit the characters rather than return a string
// that would be colored when printed, as can be done on Linux.

GTEST_ATTRIBUTE_PRINTF_(2, 3)
static void ColoredPrintf(GTestColor color, const char* fmt, ...) { … }

// Text printed in Google Test's text output and --gtest_list_tests
// output to label the type parameter and value parameter for a test.
static const char kTypeParamLabel[] = …;
static const char kValueParamLabel[] = …;

static void PrintFullTestCommentIfPresent(const TestInfo& test_info) { … }

// This class implements the TestEventListener interface.
//
// Class PrettyUnitTestResultPrinter is copyable.
class PrettyUnitTestResultPrinter : public TestEventListener { … };

// Fired before each iteration of tests starts.
void PrettyUnitTestResultPrinter::OnTestIterationStart(
    const UnitTest& unit_test, int iteration) { … }

void PrettyUnitTestResultPrinter::OnEnvironmentsSetUpStart(
    const UnitTest& /*unit_test*/) { … }

#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
void PrettyUnitTestResultPrinter::OnTestCaseStart(const TestCase& test_case) { … }
#else
void PrettyUnitTestResultPrinter::OnTestSuiteStart(
    const TestSuite& test_suite) {
  const std::string counts =
      FormatCountableNoun(test_suite.test_to_run_count(), "test", "tests");
  ColoredPrintf(GTestColor::kGreen, "[----------] ");
  printf("%s from %s", counts.c_str(), test_suite.name());
  if (test_suite.type_param() == nullptr) {
    printf("\n");
  } else {
    printf(", where %s = %s\n", kTypeParamLabel, test_suite.type_param());
  }
  fflush(stdout);
}
#endif  // GTEST_REMOVE_LEGACY_TEST_CASEAPI_

void PrettyUnitTestResultPrinter::OnTestStart(const TestInfo& test_info) { … }

void PrettyUnitTestResultPrinter::OnTestDisabled(const TestInfo& test_info) { … }

// Called after an assertion failure.
void PrettyUnitTestResultPrinter::OnTestPartResult(
    const TestPartResult& result) { … }

void PrettyUnitTestResultPrinter::OnTestEnd(const TestInfo& test_info) { … }

#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
void PrettyUnitTestResultPrinter::OnTestCaseEnd(const TestCase& test_case) { … }
#else
void PrettyUnitTestResultPrinter::OnTestSuiteEnd(const TestSuite& test_suite) {
  if (!GTEST_FLAG_GET(print_time)) return;

  const std::string counts =
      FormatCountableNoun(test_suite.test_to_run_count(), "test", "tests");
  ColoredPrintf(GTestColor::kGreen, "[----------] ");
  printf("%s from %s (%s ms total)\n\n", counts.c_str(), test_suite.name(),
         internal::StreamableToString(test_suite.elapsed_time()).c_str());
  fflush(stdout);
}
#endif  // GTEST_REMOVE_LEGACY_TEST_CASEAPI_

void PrettyUnitTestResultPrinter::OnEnvironmentsTearDownStart(
    const UnitTest& /*unit_test*/) { … }

// Internal helper for printing the list of failed tests.
void PrettyUnitTestResultPrinter::PrintFailedTests(const UnitTest& unit_test) { … }

// Internal helper for printing the list of test suite failures not covered by
// PrintFailedTests.
void PrettyUnitTestResultPrinter::PrintFailedTestSuites(
    const UnitTest& unit_test) { … }

// Internal helper for printing the list of skipped tests.
void PrettyUnitTestResultPrinter::PrintSkippedTests(const UnitTest& unit_test) { … }

void PrettyUnitTestResultPrinter::OnTestIterationEnd(const UnitTest& unit_test,
                                                     int /*iteration*/) { … }

// End PrettyUnitTestResultPrinter

// This class implements the TestEventListener interface.
//
// Class BriefUnitTestResultPrinter is copyable.
class BriefUnitTestResultPrinter : public TestEventListener { … };

// Called after an assertion failure.
void BriefUnitTestResultPrinter::OnTestPartResult(
    const TestPartResult& result) { … }

void BriefUnitTestResultPrinter::OnTestEnd(const TestInfo& test_info) { … }

void BriefUnitTestResultPrinter::OnTestIterationEnd(const UnitTest& unit_test,
                                                    int /*iteration*/) { … }

// End BriefUnitTestResultPrinter

// class TestEventRepeater
//
// This class forwards events to other event listeners.
class TestEventRepeater : public TestEventListener { … };

TestEventRepeater::~TestEventRepeater() { … }

void TestEventRepeater::Append(TestEventListener* listener) { … }

TestEventListener* TestEventRepeater::Release(TestEventListener* listener) { … }

// Since most methods are very similar, use macros to reduce boilerplate.
// This defines a member that forwards the call to all listeners.
#define GTEST_REPEATER_METHOD_ …
// This defines a member that forwards the call to all listeners in reverse
// order.
#define GTEST_REVERSE_REPEATER_METHOD_ …

GTEST_REPEATER_METHOD_
GTEST_REPEATER_METHOD_
//  Legacy API is deprecated but still available
#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
GTEST_REPEATER_METHOD_
#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_
GTEST_REPEATER_METHOD_
GTEST_REPEATER_METHOD_
GTEST_REPEATER_METHOD_
GTEST_REPEATER_METHOD_
GTEST_REPEATER_METHOD_
GTEST_REVERSE_REPEATER_METHOD_
GTEST_REVERSE_REPEATER_METHOD_
GTEST_REVERSE_REPEATER_METHOD_
//  Legacy API is deprecated but still available
#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
GTEST_REVERSE_REPEATER_METHOD_
#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_
GTEST_REVERSE_REPEATER_METHOD_
GTEST_REVERSE_REPEATER_METHOD_

#undef GTEST_REPEATER_METHOD_
#undef GTEST_REVERSE_REPEATER_METHOD_

void TestEventRepeater::OnTestIterationStart(const UnitTest& unit_test,
                                             int iteration) { … }

void TestEventRepeater::OnTestIterationEnd(const UnitTest& unit_test,
                                           int iteration) { … }

// End TestEventRepeater

#if GTEST_HAS_FILE_SYSTEM
// This class generates an XML output file.
class XmlUnitTestResultPrinter : public EmptyTestEventListener { … };

// Creates a new XmlUnitTestResultPrinter.
XmlUnitTestResultPrinter::XmlUnitTestResultPrinter(const char* output_file)
    : … { … }

// Called after the unit test ends.
void XmlUnitTestResultPrinter::OnTestIterationEnd(const UnitTest& unit_test,
                                                  int /*iteration*/) { … }

void XmlUnitTestResultPrinter::ListTestsMatchingFilter(
    const std::vector<TestSuite*>& test_suites) { … }

// Returns an XML-escaped copy of the input string str.  If is_attribute
// is true, the text is meant to appear as an attribute value, and
// normalizable whitespace is preserved by replacing it with character
// references.
//
// Invalid XML characters in str, if any, are stripped from the output.
// It is expected that most, if not all, of the text processed by this
// module will consist of ordinary English text.
// If this module is ever modified to produce version 1.1 XML output,
// most invalid characters can be retained using character references.
std::string XmlUnitTestResultPrinter::EscapeXml(const std::string& str,
                                                bool is_attribute) { … }

// Returns the given string with all characters invalid in XML removed.
// Currently invalid characters are dropped from the string. An
// alternative is to replace them with certain characters such as . or ?.
std::string XmlUnitTestResultPrinter::RemoveInvalidXmlCharacters(
    const std::string& str) { … }

// The following routines generate an XML representation of a UnitTest
// object.
//
// This is how Google Test concepts map to the DTD:
//
// <testsuites name="AllTests">        <-- corresponds to a UnitTest object
//   <testsuite name="testcase-name">  <-- corresponds to a TestSuite object
//     <testcase name="test-name">     <-- corresponds to a TestInfo object
//       <failure message="...">...</failure>
//       <failure message="...">...</failure>
//       <failure message="...">...</failure>
//                                     <-- individual assertion failures
//     </testcase>
//   </testsuite>
// </testsuites>

// Formats the given time in milliseconds as seconds.
std::string FormatTimeInMillisAsSeconds(TimeInMillis ms) { … }

static bool PortableLocaltime(time_t seconds, struct tm* out) { … }

// Converts the given epoch time in milliseconds to a date string in the ISO
// 8601 format, without the timezone information.
std::string FormatEpochTimeInMillisAsIso8601(TimeInMillis ms) { … }

// Streams an XML CDATA section, escaping invalid CDATA sequences as needed.
void XmlUnitTestResultPrinter::OutputXmlCDataSection(::std::ostream* stream,
                                                     const char* data) { … }

void XmlUnitTestResultPrinter::OutputXmlAttribute(
    std::ostream* stream, const std::string& element_name,
    const std::string& name, const std::string& value) { … }

// Streams a test suite XML stanza containing the given test result.
void XmlUnitTestResultPrinter::OutputXmlTestSuiteForTestResult(
    ::std::ostream* stream, const TestResult& result) { … }

// Prints an XML representation of a TestInfo object.
void XmlUnitTestResultPrinter::OutputXmlTestInfo(::std::ostream* stream,
                                                 const char* test_suite_name,
                                                 const TestInfo& test_info) { … }

void XmlUnitTestResultPrinter::OutputXmlTestResult(::std::ostream* stream,
                                                   const TestResult& result) { … }

// Prints an XML representation of a TestSuite object
void XmlUnitTestResultPrinter::PrintXmlTestSuite(std::ostream* stream,
                                                 const TestSuite& test_suite) { … }

// Prints an XML summary of unit_test to output stream out.
void XmlUnitTestResultPrinter::PrintXmlUnitTest(std::ostream* stream,
                                                const UnitTest& unit_test) { … }

void XmlUnitTestResultPrinter::PrintXmlTestsList(
    std::ostream* stream, const std::vector<TestSuite*>& test_suites) { … }

// Produces a string representing the test properties in a result as space
// delimited XML attributes based on the property key="value" pairs.
std::string XmlUnitTestResultPrinter::TestPropertiesAsXmlAttributes(
    const TestResult& result) { … }

void XmlUnitTestResultPrinter::OutputXmlTestProperties(
    std::ostream* stream, const TestResult& result) { … }

// End XmlUnitTestResultPrinter
#endif  // GTEST_HAS_FILE_SYSTEM

#if GTEST_HAS_FILE_SYSTEM
// This class generates an JSON output file.
class JsonUnitTestResultPrinter : public EmptyTestEventListener { … };

// Creates a new JsonUnitTestResultPrinter.
JsonUnitTestResultPrinter::JsonUnitTestResultPrinter(const char* output_file)
    : … { … }

void JsonUnitTestResultPrinter::OnTestIterationEnd(const UnitTest& unit_test,
                                                   int /*iteration*/) { … }

// Returns an JSON-escaped copy of the input string str.
std::string JsonUnitTestResultPrinter::EscapeJson(const std::string& str) { … }

// The following routines generate an JSON representation of a UnitTest
// object.

// Formats the given time in milliseconds as seconds.
static std::string FormatTimeInMillisAsDuration(TimeInMillis ms) { … }

// Converts the given epoch time in milliseconds to a date string in the
// RFC3339 format, without the timezone information.
static std::string FormatEpochTimeInMillisAsRFC3339(TimeInMillis ms) { … }

static inline std::string Indent(size_t width) { … }

void JsonUnitTestResultPrinter::OutputJsonKey(std::ostream* stream,
                                              const std::string& element_name,
                                              const std::string& name,
                                              const std::string& value,
                                              const std::string& indent,
                                              bool comma) { … }

void JsonUnitTestResultPrinter::OutputJsonKey(
    std::ostream* stream, const std::string& element_name,
    const std::string& name, int value, const std::string& indent, bool comma) { … }

// Streams a test suite JSON stanza containing the given test result.
void JsonUnitTestResultPrinter::OutputJsonTestSuiteForTestResult(
    ::std::ostream* stream, const TestResult& result) { … }

// Prints a JSON representation of a TestInfo object.
void JsonUnitTestResultPrinter::OutputJsonTestInfo(::std::ostream* stream,
                                                   const char* test_suite_name,
                                                   const TestInfo& test_info) { … }

void JsonUnitTestResultPrinter::OutputJsonTestResult(::std::ostream* stream,
                                                     const TestResult& result) { … }

// Prints an JSON representation of a TestSuite object
void JsonUnitTestResultPrinter::PrintJsonTestSuite(
    std::ostream* stream, const TestSuite& test_suite) { … }

// Prints a JSON summary of unit_test to output stream out.
void JsonUnitTestResultPrinter::PrintJsonUnitTest(std::ostream* stream,
                                                  const UnitTest& unit_test) { … }

void JsonUnitTestResultPrinter::PrintJsonTestList(
    std::ostream* stream, const std::vector<TestSuite*>& test_suites) { … }
// Produces a string representing the test properties in a result as
// a JSON dictionary.
std::string JsonUnitTestResultPrinter::TestPropertiesAsJson(
    const TestResult& result, const std::string& indent) { … }

// End JsonUnitTestResultPrinter
#endif  // GTEST_HAS_FILE_SYSTEM

#if GTEST_CAN_STREAM_RESULTS_

// Checks if str contains '=', '&', '%' or '\n' characters. If yes,
// replaces them by "%xx" where xx is their hexadecimal value. For
// example, replaces "=" with "%3D".  This algorithm is O(strlen(str))
// in both time and space -- important as the input str may contain an
// arbitrarily long test failure message and stack trace.
std::string StreamingListener::UrlEncode(const char* str) { … }

void StreamingListener::SocketWriter::MakeConnection() { … }

// End of class Streaming Listener
#endif  // GTEST_CAN_STREAM_RESULTS__

// class OsStackTraceGetter

const char* const OsStackTraceGetterInterface::kElidedFramesMarker = …;

std::string OsStackTraceGetter::CurrentStackTrace(int max_depth, int skip_count)
    GTEST_LOCK_EXCLUDED_(mutex_) { … }

void OsStackTraceGetter::UponLeavingGTest() GTEST_LOCK_EXCLUDED_(mutex_) { … }

#ifdef GTEST_HAS_DEATH_TEST
// A helper class that creates the premature-exit file in its
// constructor and deletes the file in its destructor.
class ScopedPrematureExitFile { … };
#endif  // GTEST_HAS_DEATH_TEST

}  // namespace internal

// class TestEventListeners

TestEventListeners::TestEventListeners()
    : … { … }

TestEventListeners::~TestEventListeners() { … }

// Returns the standard listener responsible for the default console
// output.  Can be removed from the listeners list to shut down default
// console output.  Note that removing this object from the listener list
// with Release transfers its ownership to the user.
void TestEventListeners::Append(TestEventListener* listener) { … }

// Removes the given event listener from the list and returns it.  It then
// becomes the caller's responsibility to delete the listener. Returns
// NULL if the listener is not found in the list.
TestEventListener* TestEventListeners::Release(TestEventListener* listener) { … }

// Returns repeater that broadcasts the TestEventListener events to all
// subscribers.
TestEventListener* TestEventListeners::repeater() { … }

// Sets the default_result_printer attribute to the provided listener.
// The listener is also added to the listener list and previous
// default_result_printer is removed from it and deleted. The listener can
// also be NULL in which case it will not be added to the list. Does
// nothing if the previous and the current listener objects are the same.
void TestEventListeners::SetDefaultResultPrinter(TestEventListener* listener) { … }

// Sets the default_xml_generator attribute to the provided listener.  The
// listener is also added to the listener list and previous
// default_xml_generator is removed from it and deleted. The listener can
// also be NULL in which case it will not be added to the list. Does
// nothing if the previous and the current listener objects are the same.
void TestEventListeners::SetDefaultXmlGenerator(TestEventListener* listener) { … }

// Controls whether events will be forwarded by the repeater to the
// listeners in the list.
bool TestEventListeners::EventForwardingEnabled() const { … }

void TestEventListeners::SuppressEventForwarding(bool suppress) { … }

// class UnitTest

// Gets the singleton UnitTest object.  The first time this method is
// called, a UnitTest object is constructed and returned.  Consecutive
// calls will return the same object.
//
// We don't protect this under mutex_ as a user is not supposed to
// call this before main() starts, from which point on the return
// value will never change.
UnitTest* UnitTest::GetInstance() { … }

// Gets the number of successful test suites.
int UnitTest::successful_test_suite_count() const { … }

// Gets the number of failed test suites.
int UnitTest::failed_test_suite_count() const { … }

// Gets the number of all test suites.
int UnitTest::total_test_suite_count() const { … }

// Gets the number of all test suites that contain at least one test
// that should run.
int UnitTest::test_suite_to_run_count() const { … }

//  Legacy API is deprecated but still available
#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
int UnitTest::successful_test_case_count() const { … }
int UnitTest::failed_test_case_count() const { … }
int UnitTest::total_test_case_count() const { … }
int UnitTest::test_case_to_run_count() const { … }
#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_

// Gets the number of successful tests.
int UnitTest::successful_test_count() const { … }

// Gets the number of skipped tests.
int UnitTest::skipped_test_count() const { … }

// Gets the number of failed tests.
int UnitTest::failed_test_count() const { … }

// Gets the number of disabled tests that will be reported in the XML report.
int UnitTest::reportable_disabled_test_count() const { … }

// Gets the number of disabled tests.
int UnitTest::disabled_test_count() const { … }

// Gets the number of tests to be printed in the XML report.
int UnitTest::reportable_test_count() const { … }

// Gets the number of all tests.
int UnitTest::total_test_count() const { … }

// Gets the number of tests that should run.
int UnitTest::test_to_run_count() const { … }

// Gets the time of the test program start, in ms from the start of the
// UNIX epoch.
internal::TimeInMillis UnitTest::start_timestamp() const { … }

// Gets the elapsed time, in milliseconds.
internal::TimeInMillis UnitTest::elapsed_time() const { … }

// Returns true if and only if the unit test passed (i.e. all test suites
// passed).
bool UnitTest::Passed() const { … }

// Returns true if and only if the unit test failed (i.e. some test suite
// failed or something outside of all tests failed).
bool UnitTest::Failed() const { … }

// 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* UnitTest::GetTestSuite(int i) const { … }

//  Legacy API is deprecated but still available
#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
const TestCase* UnitTest::GetTestCase(int i) const { … }
#endif  //  GTEST_REMOVE_LEGACY_TEST_CASEAPI_

// Returns the TestResult containing information on test failures and
// properties logged outside of individual test suites.
const TestResult& UnitTest::ad_hoc_test_result() const { … }

// 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* UnitTest::GetMutableTestSuite(int i) { … }

// Returns the list of event listeners that can be used to track events
// inside Google Test.
TestEventListeners& UnitTest::listeners() { … }

// Registers and returns a global test environment.  When a test
// program is run, all global test environments will be set-up in the
// order they were registered.  After all tests in the program have
// finished, all global test environments will be torn-down in the
// *reverse* order they were registered.
//
// The UnitTest object takes ownership of the given environment.
//
// We don't protect this under mutex_, as we only support calling it
// from the main thread.
Environment* UnitTest::AddEnvironment(Environment* env) { … }

// Adds a TestPartResult to the current TestResult object.  All Google Test
// assertion macros (e.g. ASSERT_TRUE, EXPECT_EQ, etc) eventually call
// this to report their results.  The user code should use the
// assertion macros instead of calling this directly.
void UnitTest::AddTestPartResult(TestPartResult::Type result_type,
                                 const char* file_name, int line_number,
                                 const std::string& message,
                                 const std::string& os_stack_trace)
    GTEST_LOCK_EXCLUDED_(mutex_) { … }

// Adds a TestProperty to the current TestResult object when invoked from
// inside a test, to current TestSuite's ad_hoc_test_result_ when invoked
// from SetUpTestSuite or TearDownTestSuite, or to the global property set
// when invoked elsewhere.  If the result already contains a property with
// the same key, the value will be updated.
void UnitTest::RecordProperty(const std::string& key,
                              const std::string& value) { … }

// Runs all tests in this UnitTest object and prints the result.
// Returns 0 if successful, or 1 otherwise.
//
// We don't protect this under mutex_, as we only support calling it
// from the main thread.
int UnitTest::Run() { … }

#if GTEST_HAS_FILE_SYSTEM
// Returns the working directory when the first TEST() or TEST_F() was
// executed.
const char* UnitTest::original_working_dir() const { … }
#endif  // GTEST_HAS_FILE_SYSTEM

// Returns the TestSuite object for the test that's currently running,
// or NULL if no test is running.
const TestSuite* UnitTest::current_test_suite() const
    GTEST_LOCK_EXCLUDED_(mutex_) { … }

// Legacy API is still available but deprecated
#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
const TestCase* UnitTest::current_test_case() const
    GTEST_LOCK_EXCLUDED_(mutex_) { … }
#endif

// Returns the TestInfo object for the test that's currently running,
// or NULL if no test is running.
const TestInfo* UnitTest::current_test_info() const
    GTEST_LOCK_EXCLUDED_(mutex_) { … }

// Returns the random seed used at the start of the current test run.
int UnitTest::random_seed() const { … }

// Returns ParameterizedTestSuiteRegistry object used to keep track of
// value-parameterized tests and instantiate and register them.
internal::ParameterizedTestSuiteRegistry&
UnitTest::parameterized_test_registry() GTEST_LOCK_EXCLUDED_(mutex_) { … }

// Creates an empty UnitTest.
UnitTest::UnitTest() { … }

// Destructor of UnitTest.
UnitTest::~UnitTest() { … }

// Pushes a trace defined by SCOPED_TRACE() on to the per-thread
// Google Test trace stack.
void UnitTest::PushGTestTrace(const internal::TraceInfo& trace)
    GTEST_LOCK_EXCLUDED_(mutex_) { … }

// Pops a trace from the per-thread Google Test trace stack.
void UnitTest::PopGTestTrace() GTEST_LOCK_EXCLUDED_(mutex_) { … }

namespace internal {

UnitTestImpl::UnitTestImpl(UnitTest* parent)
    : … { … }

UnitTestImpl::~UnitTestImpl() { … }

// Adds a TestProperty to the current TestResult object when invoked in a
// context of a test, to current test suite's ad_hoc_test_result when invoke
// from SetUpTestSuite/TearDownTestSuite, or to the global property set
// otherwise.  If the result already contains a property with the same key,
// the value will be updated.
void UnitTestImpl::RecordProperty(const TestProperty& test_property) { … }

#ifdef GTEST_HAS_DEATH_TEST
// Disables event forwarding if the control is currently in a death test
// subprocess. Must not be called before InitGoogleTest.
void UnitTestImpl::SuppressTestEventsIfInSubprocess() { … }
#endif  // GTEST_HAS_DEATH_TEST

// Initializes event listeners performing XML output as specified by
// UnitTestOptions. Must not be called before InitGoogleTest.
void UnitTestImpl::ConfigureXmlOutput() { … }

#if GTEST_CAN_STREAM_RESULTS_
// Initializes event listeners for streaming test results in string form.
// Must not be called before InitGoogleTest.
void UnitTestImpl::ConfigureStreamingOutput() { … }
#endif  // GTEST_CAN_STREAM_RESULTS_

// 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 UnitTestImpl::PostFlagParsingInit() { … }

// A predicate that checks the name of a TestSuite against a known
// value.
//
// This is used for implementation of the UnitTest class only.  We put
// it in the anonymous namespace to prevent polluting the outer
// namespace.
//
// TestSuiteNameIs is copyable.
class TestSuiteNameIs { … };

// Finds and returns a TestSuite with the given name.  If one doesn't
// exist, creates one and returns it.  It's the CALLER'S
// RESPONSIBILITY to ensure that this function is only called WHEN THE
// TESTS ARE NOT SHUFFLED.
//
// Arguments:
//
//   test_suite_name: name of the test suite
//   type_param:      the name of the test suite's type parameter, or NULL if
//                    this is not a typed or a type-parameterized test suite.
//   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* UnitTestImpl::GetTestSuite(
    const char* test_suite_name, const char* type_param,
    internal::SetUpTestSuiteFunc set_up_tc,
    internal::TearDownTestSuiteFunc tear_down_tc) { … }

// Helpers for setting up / tearing down the given environment.  They
// are for use in the ForEach() function.
static void SetUpEnvironment(Environment* env) { … }
static void TearDownEnvironment(Environment* env) { … }

// 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, the test is considered to be failed, but the
// rest of the tests will still be run.
//
// When parameterized tests are enabled, it expands and registers
// parameterized tests first in RegisterParameterizedTests().
// All other functions called from RunAllTests() may safely assume that
// parameterized tests are ready to be counted and run.
bool UnitTestImpl::RunAllTests() { … }

#if GTEST_HAS_FILE_SYSTEM
// 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() { … }
#endif  // GTEST_HAS_FILE_SYSTEM

// Checks whether sharding is enabled by examining the relevant
// environment variable values. If the variables are present,
// but inconsistent (i.e., 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.
bool ShouldShard(const char* total_shards_env, const char* shard_index_env,
                 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 aborts.
int32_t Int32FromEnvOrDie(const char* 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.
bool ShouldRunTestOnShard(int total_shards, int shard_index, int test_id) { … }

// Compares the name of each test with the user-specified filter to
// decide whether the test should be run, then records the result in
// each TestSuite and TestInfo object.
// If shard_tests == true, further filters tests based on sharding
// variables in the environment - see
// https://github.com/google/googletest/blob/main/docs/advanced.md
// . Returns the number of tests that should run.
int UnitTestImpl::FilterTests(ReactionToSharding shard_tests) { … }

// Prints the given C-string on a single line by replacing all '\n'
// characters with string "\\n".  If the output takes more than
// max_length characters, only prints the first max_length characters
// and "...".
static void PrintOnOneLine(const char* str, int max_length) { … }

// Prints the names of the tests matching the user-specified filter flag.
void UnitTestImpl::ListTestsMatchingFilter() { … }

// 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 UnitTestImpl::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* UnitTestImpl::os_stack_trace_getter() { … }

// Returns the most specific TestResult currently running.
TestResult* UnitTestImpl::current_test_result() { … }

// Shuffles all test suites, and the tests within each test suite,
// making sure that death tests are still run first.
void UnitTestImpl::ShuffleTests() { … }

// Restores the test suites and tests to their order before the first shuffle.
void UnitTestImpl::UnshuffleTests() { … }

// 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
// GetCurrentOsStackTraceExceptTop(..., 1), Foo() will be included in
// the trace but Bar() and GetCurrentOsStackTraceExceptTop() won't.
GTEST_NO_INLINE_ GTEST_NO_TAIL_CALL_ std::string
GetCurrentOsStackTraceExceptTop(int skip_count) { … }

// Used by the GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_ macro to
// suppress unreachable code warnings.
namespace {
class ClassUniqueToAlwaysTrue { … };
}  // namespace

bool IsTrue(bool condition) { … }

bool AlwaysTrue() { … }

// If *pstr starts with the given prefix, modifies *pstr to be right
// past the prefix and returns true; otherwise leaves *pstr unchanged
// and returns false.  None of pstr, *pstr, and prefix can be NULL.
bool SkipPrefix(const char* prefix, const char** pstr) { … }

// Parses a string as a command line flag.  The string should have
// the format "--flag=value".  When def_optional is true, the "=value"
// part can be omitted.
//
// Returns the value of the flag, or NULL if the parsing failed.
static const char* ParseFlagValue(const char* str, const char* flag_name,
                                  bool def_optional) { … }

// Parses a string for a bool flag, in the form of either
// "--flag=value" or "--flag".
//
// In the former case, the value is taken as true as long as it does
// not start with '0', 'f', or 'F'.
//
// In the latter case, the value is taken as true.
//
// On success, stores the value of the flag in *value, and returns
// true.  On failure, returns false without changing *value.
static bool ParseFlag(const char* str, const char* flag_name, bool* value) { … }

// Parses a string for an int32_t 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.
bool ParseFlag(const char* str, const char* flag_name, int32_t* value) { … }

// Parses a string for a string 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.
template <typename String>
static bool ParseFlag(const char* str, const char* flag_name, String* value) { … }

// Determines whether a string has a prefix that Google Test uses for its
// flags, i.e., starts with GTEST_FLAG_PREFIX_ or GTEST_FLAG_PREFIX_DASH_.
// If Google Test detects that a command line flag has its prefix but is not
// recognized, it will print its help message. Flags starting with
// GTEST_INTERNAL_PREFIX_ followed by "internal_" are considered Google Test
// internal flags and do not trigger the help message.
static bool HasGoogleTestFlagPrefix(const char* str) { … }

// Prints a string containing code-encoded text.  The following escape
// sequences can be used in the string to control the text color:
//
//   @@    prints a single '@' character.
//   @R    changes the color to red.
//   @G    changes the color to green.
//   @Y    changes the color to yellow.
//   @D    changes to the default terminal text color.
//
static void PrintColorEncoded(const char* str) { … }

static const char kColorEncodedHelpMessage[] = …;

static bool ParseGoogleTestFlag(const char* const arg) { … }

#if GTEST_USE_OWN_FLAGFILE_FLAG_ && GTEST_HAS_FILE_SYSTEM
static void LoadFlagsFromFile(const std::string& path) { … }
#endif  // GTEST_USE_OWN_FLAGFILE_FLAG_ && GTEST_HAS_FILE_SYSTEM

// Parses the command line for Google Test flags, without initializing
// other parts of Google Test.  The type parameter CharType can be
// instantiated to either char or wchar_t.
template <typename CharType>
void ParseGoogleTestFlagsOnlyImpl(int* argc, CharType** argv) { … }

// Parses the command line for Google Test flags, without initializing
// other parts of Google Test. This function updates argc and argv by removing
// flags that are known to GoogleTest (including other user flags defined using
// ABSL_FLAG if GoogleTest is built with GTEST_USE_ABSL). Other arguments
// remain in place. Unrecognized flags are not reported and do not cause the
// program to exit.
void ParseGoogleTestFlagsOnly(int* argc, char** argv) { … }
void ParseGoogleTestFlagsOnly(int* argc, wchar_t** argv) { … }

// The internal implementation of InitGoogleTest().
//
// The type parameter CharType can be instantiated to either char or
// wchar_t.
template <typename CharType>
void InitGoogleTestImpl(int* argc, CharType** argv) { … }

}  // namespace internal

// Initializes Google Test.  This must be called before calling
// RUN_ALL_TESTS().  In particular, it parses a command line for the
// flags that Google Test recognizes.  Whenever a Google Test flag is
// seen, it is removed from argv, and *argc is decremented.
//
// No value is returned.  Instead, the Google Test flag variables are
// updated.
//
// Calling the function for the second time has no user-visible effect.
void InitGoogleTest(int* argc, char** argv) { … }

// This overloaded version can be used in Windows programs compiled in
// UNICODE mode.
void InitGoogleTest(int* argc, wchar_t** argv) { … }

// This overloaded version can be used on Arduino/embedded platforms where
// there is no argc/argv.
void InitGoogleTest() { … }

#if !defined(GTEST_CUSTOM_TEMPDIR_FUNCTION_) || \
    !defined(GTEST_CUSTOM_SRCDIR_FUNCTION_)
// Returns the value of the first environment variable that is set and contains
// a non-empty string. If there are none, returns the "fallback" string. Adds
// the director-separator character as a suffix if not provided in the
// environment variable value.
static std::string GetDirFromEnv(
    std::initializer_list<const char*> environment_variables,
    const char* fallback, char separator) { … }
#endif

std::string TempDir() { … }

#if GTEST_HAS_FILE_SYSTEM && !defined(GTEST_CUSTOM_SRCDIR_FUNCTION_)
// Returns the directory path (including terminating separator) of the current
// executable as derived from argv[0].
static std::string GetCurrentExecutableDirectory() { … }
#endif

#if GTEST_HAS_FILE_SYSTEM
std::string SrcDir() { … }
#endif

// Class ScopedTrace

// Pushes the given source file location and message onto a per-thread
// trace stack maintained by Google Test.
void ScopedTrace::PushTrace(const char* file, int line, std::string message) { … }

// Pops the info pushed by the c'tor.
ScopedTrace::~ScopedTrace() GTEST_LOCK_EXCLUDED_(&UnitTest::mutex_) { … }

}  // namespace testing