The Tor Browser: media/webrtc/trunk/testing/gtest/src/gtest.cc@a63d609f5ebe (annotated)

media/webrtc/trunk/testing/gtest/src/gtest.cc@a63d609f5ebe (annotated)

media/webrtc/trunk/testing/gtest/src/gtest.cc

Thu, 15 Jan 2015 15:55:04 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 15 Jan 2015 15:55:04 +0100
branch: TOR_BUG_9701
changeset 9: a63d609f5ebe
permissions: -rw-r--r--

Back out 97036ab72558 which inappropriately compared turds to third parties.

 // Copyright 2005, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 // notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 // copyright notice, this list of conditions and the following disclaimer
 // in the documentation and/or other materials provided with the
 // distribution.
 //     * Neither the name of Google Inc. nor the names of its
 // contributors may be used to endorse or promote products derived from
 // this software without specific prior written permission.
 //
 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 //
 // Author: wan@google.com (Zhanyong Wan)
 //
 // The Google C++ Testing Framework (Google Test)
 #include "gtest/gtest.h"
 #include "gtest/gtest-spi.h"
 #include <ctype.h>
 #include <math.h>
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <time.h>
 #include <wchar.h>
 #include <wctype.h>
 #include <algorithm>
 #include <ostream>  // NOLINT
 #include <sstream>
 #include <vector>
 #if GTEST_OS_LINUX
 // TODO(kenton@google.com): Use autoconf to detect availability of
 // gettimeofday().
 # define GTEST_HAS_GETTIMEOFDAY_ 1
 # 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 GTEST_OS_SYMBIAN
 # define GTEST_HAS_GETTIMEOFDAY_ 1
 # include <sys/time.h>  // NOLINT
 #elif GTEST_OS_ZOS
 # define GTEST_HAS_GETTIMEOFDAY_ 1
 # include <sys/time.h>  // NOLINT
 // On z/OS we additionally need strings.h for strcasecmp.
 # include <strings.h>  // NOLINT
 #elif GTEST_OS_WINDOWS_MOBILE  // We are on Windows CE.
 # include <windows.h>  // NOLINT
 #elif GTEST_OS_WINDOWS  // We are on Windows proper.
 # include <io.h>  // NOLINT
 # include <sys/timeb.h>  // NOLINT
 # include <sys/types.h>  // NOLINT
 # include <sys/stat.h>  // NOLINT
 # if GTEST_OS_WINDOWS_MINGW
 // MinGW has gettimeofday() but not _ftime64().
 // TODO(kenton@google.com): Use autoconf to detect availability of
 //   gettimeofday().
 // TODO(kenton@google.com): There are other ways to get the time on
 //   Windows, like GetTickCount() or GetSystemTimeAsFileTime().  MinGW
 //   supports these.  consider using them instead.
 #  define GTEST_HAS_GETTIMEOFDAY_ 1
 #  include <sys/time.h>  // NOLINT
 # endif  // GTEST_OS_WINDOWS_MINGW
 // cpplint thinks that the header is already included, so we want to
 // silence it.
 # include <windows.h>  // NOLINT
 #else
 // Assume other platforms have gettimeofday().
 // TODO(kenton@google.com): Use autoconf to detect availability of
 //   gettimeofday().
 # define GTEST_HAS_GETTIMEOFDAY_ 1
 // 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
 #endif
 // Indicates that this translation unit is part of Google Test's
 // implementation.  It must come before gtest-internal-inl.h is
 // included, or there will be a compiler error.  This trick is to
 // prevent a user from accidentally including gtest-internal-inl.h in
 // his code.
 #define GTEST_IMPLEMENTATION_ 1
 #include "src/gtest-internal-inl.h"
 #undef GTEST_IMPLEMENTATION_
 #if GTEST_OS_WINDOWS
 # define vsnprintf _vsnprintf
 #endif  // GTEST_OS_WINDOWS
 namespace testing {
 using internal::CountIf;
 using internal::ForEach;
 using internal::GetElementOr;
 using internal::Shuffle;
 // Constants.
 // A test whose test case name or test name matches this filter is
 // disabled and not run.
 static const char kDisableTestFilter[] = "DISABLED_*:*/DISABLED_*";
 // A test case whose name matches this filter is considered a death
 // test case and will be run before test cases whose name doesn't
 // match this filter.
 static const char kDeathTestCaseFilter[] = "*DeathTest:*DeathTest/*";
 // A test filter that matches everything.
 static const char kUniversalFilter[] = "*";
 // The default output file for XML output.
 static const char kDefaultOutputFile[] = "test_detail.xml";
 // The environment variable name for the test shard index.
 static const char kTestShardIndex[] = "GTEST_SHARD_INDEX";
 // The environment variable name for the total number of test shards.
 static const char kTestTotalShards[] = "GTEST_TOTAL_SHARDS";
 // The environment variable name for the test shard status file.
 static const char kTestShardStatusFile[] = "GTEST_SHARD_STATUS_FILE";
 namespace internal {
 // The text used in failure messages to indicate the start of the
 // stack trace.
 const char kStackTraceMarker[] = "\nStack trace:\n";
 // g_help_flag is true iff the --help flag or an equivalent form is
 // specified on the command line.
 bool g_help_flag = false;
 }  // namespace internal
 GTEST_DEFINE_bool_(
     also_run_disabled_tests,
     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,
     internal::BoolFromGTestEnv("break_on_failure", false),
     "True iff a failed assertion should be a debugger break-point.");
 GTEST_DEFINE_bool_(
     catch_exceptions,
     internal::BoolFromGTestEnv("catch_exceptions", true),
     "True iff " GTEST_NAME_
     " should catch exceptions and treat them as test failures.");
 GTEST_DEFINE_string_(
     color,
     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 xterm, xterm-color, xterm-256color, linux or cygwin.");
 GTEST_DEFINE_string_(
     filter,
     internal::StringFromGTestEnv("filter", kUniversalFilter),
     "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_(list_tests, false,
                    "List all tests without running them.");
 GTEST_DEFINE_string_(
     output,
     internal::StringFromGTestEnv("output", ""),
     "A format (currently must be \"xml\"), 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_(
     print_time,
     internal::BoolFromGTestEnv("print_time", true),
     "True iff " GTEST_NAME_
     " should display elapsed time in text output.");
 GTEST_DEFINE_int32_(
     random_seed,
     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,
     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_(
     show_internal_stack_frames, false,
     "True iff " GTEST_NAME_ " should include internal stack frames when "
     "printing test failure stack traces.");
 GTEST_DEFINE_bool_(
     shuffle,
     internal::BoolFromGTestEnv("shuffle", false),
     "True iff " GTEST_NAME_
     " should randomize tests' order on every run.");
 GTEST_DEFINE_int32_(
     stack_trace_depth,
     internal::Int32FromGTestEnv("stack_trace_depth", 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,
     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,
     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.");
 namespace internal {
 // Generates a random number from [0, range), using a Linear
 // Congruential Generator (LCG).  Crashes if 'range' is 0 or greater
 // than kMaxRange.
 UInt32 Random::Generate(UInt32 range) {
   // These constants are the same as are used in glibc's rand(3).
   state_ = (1103515245U*state_ + 12345U) % kMaxRange;
   GTEST_CHECK_(range > 0)
       << "Cannot generate a number in the range [0, 0).";
   GTEST_CHECK_(range <= kMaxRange)
       << "Generation of a number in [0, " << range << ") was requested, "
       << "but this can only generate numbers in [0, " << kMaxRange << ").";
   // Converting via modulus introduces a bit of downward bias, but
   // it's simple, and a linear congruential generator isn't too good
   // to begin with.
   return state_ % range;
 }
 // GTestIsInitialized() returns true iff the user has initialized
 // Google Test.  Useful for catching the user mistake of not initializing
 // Google Test before calling RUN_ALL_TESTS().
 //
 // A user must call testing::InitGoogleTest() to initialize Google
 // Test.  g_init_gtest_count is set to the number of times
 // InitGoogleTest() has been called.  We don't protect this variable
 // under a mutex as it is only accessed in the main thread.
 GTEST_API_ int g_init_gtest_count = 0;
 static bool GTestIsInitialized() { return g_init_gtest_count != 0; }
 // Iterates over a vector of TestCases, keeping a running sum of the
 // results of calling a given int-returning method on each.
 // Returns the sum.
 static int SumOverTestCaseList(const std::vector<TestCase*>& case_list,
                                int (TestCase::*method)() const) {
   int sum = 0;
   for (size_t i = 0; i < case_list.size(); i++) {
     sum += (case_list[i]->*method)();
   }
   return sum;
 }
 // Returns true iff the test case passed.
 static bool TestCasePassed(const TestCase* test_case) {
   return test_case->should_run() && test_case->Passed();
 }
 // Returns true iff the test case failed.
 static bool TestCaseFailed(const TestCase* test_case) {
   return test_case->should_run() && test_case->Failed();
 }
 // Returns true iff test_case contains at least one test that should
 // run.
 static bool ShouldRunTestCase(const TestCase* test_case) {
   return test_case->should_run();
 }
 // AssertHelper constructor.
 AssertHelper::AssertHelper(TestPartResult::Type type,
                            const char* file,
                            int line,
                            const char* message)
     : data_(new AssertHelperData(type, file, line, message)) {
 }
 AssertHelper::~AssertHelper() {
   delete data_;
 }
 // Message assignment, for assertion streaming support.
 void AssertHelper::operator=(const Message& message) const {
   UnitTest::GetInstance()->
     AddTestPartResult(data_->type, data_->file, data_->line,
                       AppendUserMessage(data_->message, message),
                       UnitTest::GetInstance()->impl()
                       ->CurrentOsStackTraceExceptTop(1)
                       // Skips the stack frame for this function itself.
                       );  // NOLINT
 }
 // Mutex for linked pointers.
 GTEST_API_ GTEST_DEFINE_STATIC_MUTEX_(g_linked_ptr_mutex);
 // Application pathname gotten in InitGoogleTest.
 String g_executable_path;
 // Returns the current application's name, removing directory path if that
 // is present.
 FilePath GetCurrentExecutableName() {
   FilePath result;
 #if GTEST_OS_WINDOWS
   result.Set(FilePath(g_executable_path).RemoveExtension("exe"));
 #else
   result.Set(FilePath(g_executable_path));
 #endif  // GTEST_OS_WINDOWS
   return result.RemoveDirectoryName();
 }
 // Functions for processing the gtest_output flag.
 // Returns the output format, or "" for normal printed output.
 String UnitTestOptions::GetOutputFormat() {
   const char* const gtest_output_flag = GTEST_FLAG(output).c_str();
   if (gtest_output_flag == NULL) return String("");
   const char* const colon = strchr(gtest_output_flag, ':');
   return (colon == NULL) ?
       String(gtest_output_flag) :
       String(gtest_output_flag, colon - gtest_output_flag);
 }
 // Returns the name of the requested output file, or the default if none
 // was explicitly specified.
 String UnitTestOptions::GetAbsolutePathToOutputFile() {
   const char* const gtest_output_flag = GTEST_FLAG(output).c_str();
   if (gtest_output_flag == NULL)
     return String("");
   const char* const colon = strchr(gtest_output_flag, ':');
   if (colon == NULL)
     return String(internal::FilePath::ConcatPaths(
                internal::FilePath(
                    UnitTest::GetInstance()->original_working_dir()),
                internal::FilePath(kDefaultOutputFile)).ToString() );
   internal::FilePath output_name(colon + 1);
   if (!output_name.IsAbsolutePath())
     // TODO(wan@google.com): on Windows \some\path is not an absolute
     // path (as its meaning depends on the current drive), yet the
     // following logic for turning it into an absolute path is wrong.
     // Fix it.
     output_name = internal::FilePath::ConcatPaths(
         internal::FilePath(UnitTest::GetInstance()->original_working_dir()),
         internal::FilePath(colon + 1));
   if (!output_name.IsDirectory())
     return output_name.ToString();
   internal::FilePath result(internal::FilePath::GenerateUniqueFileName(
       output_name, internal::GetCurrentExecutableName(),
       GetOutputFormat().c_str()));
   return result.ToString();
 }
 // Returns true iff the wildcard pattern matches the string.  The
 // first ':' or '\0' character in pattern marks the end of it.
 //
 // This recursive algorithm isn't very efficient, but is clear and
 // works well enough for matching test names, which are short.
 bool UnitTestOptions::PatternMatchesString(const char *pattern,
                                            const char *str) {
   switch (*pattern) {
     case '\0':
     case ':':  // Either ':' or '\0' marks the end of the pattern.
       return *str == '\0';
     case '?':  // Matches any single character.
       return *str != '\0' && PatternMatchesString(pattern + 1, str + 1);
     case '*':  // Matches any string (possibly empty) of characters.
       return (*str != '\0' && PatternMatchesString(pattern, str + 1)) ||
           PatternMatchesString(pattern + 1, str);
     default:  // Non-special character.  Matches itself.
       return *pattern == *str &&
           PatternMatchesString(pattern + 1, str + 1);
   }
 }
 bool UnitTestOptions::MatchesFilter(const String& name, const char* filter) {
   const char *cur_pattern = filter;
   for (;;) {
     if (PatternMatchesString(cur_pattern, name.c_str())) {
       return true;
     }
     // Finds the next pattern in the filter.
     cur_pattern = strchr(cur_pattern, ':');
     // Returns if no more pattern can be found.
     if (cur_pattern == NULL) {
       return false;
     }
     // Skips the pattern separater (the ':' character).
     cur_pattern++;
   }
 }
 // TODO(keithray): move String function implementations to gtest-string.cc.
 // Returns true iff the user-specified filter matches the test case
 // name and the test name.
 bool UnitTestOptions::FilterMatchesTest(const String &test_case_name,
                                         const String &test_name) {
   const String& full_name = String::Format("%s.%s",
                                            test_case_name.c_str(),
                                            test_name.c_str());
   // Split --gtest_filter at '-', if there is one, to separate into
   // positive filter and negative filter portions
   const char* const p = GTEST_FLAG(filter).c_str();
   const char* const dash = strchr(p, '-');
   String positive;
   String negative;
   if (dash == NULL) {
     positive = GTEST_FLAG(filter).c_str();  // Whole string is a positive filter
     negative = String("");
   } else {
     positive = String(p, dash - p);  // Everything up to the dash
     negative = String(dash+1);       // Everything after the dash
     if (positive.empty()) {
       // Treat '-test1' as the same as '*-test1'
       positive = kUniversalFilter;
     }
   }
   // A filter is a colon-separated list of patterns.  It matches a
   // test if any pattern in it matches the test.
   return (MatchesFilter(full_name, positive.c_str()) &&
           !MatchesFilter(full_name, negative.c_str()));
 }
 #if GTEST_HAS_SEH
 // Returns EXCEPTION_EXECUTE_HANDLER if Google Test should handle the
 // given SEH exception, or EXCEPTION_CONTINUE_SEARCH otherwise.
 // This function is useful as an __except condition.
 int UnitTestOptions::GTestShouldProcessSEH(DWORD exception_code) {
   // Google Test should handle a SEH exception if:
   //   1. the user wants it to, AND
   //   2. this is not a breakpoint exception, 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;
   bool should_handle = true;
   if (!GTEST_FLAG(catch_exceptions))
     should_handle = false;
   else if (exception_code == EXCEPTION_BREAKPOINT)
     should_handle = false;
   else if (exception_code == kCxxExceptionCode)
     should_handle = false;
   return should_handle ? EXCEPTION_EXECUTE_HANDLER : EXCEPTION_CONTINUE_SEARCH;
 }
 #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)
     : intercept_mode_(INTERCEPT_ONLY_CURRENT_THREAD),
       result_(result) {
   Init();
 }
 // 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)
     : intercept_mode_(intercept_mode),
       result_(result) {
   Init();
 }
 void ScopedFakeTestPartResultReporter::Init() {
   internal::UnitTestImpl* const impl = internal::GetUnitTestImpl();
   if (intercept_mode_ == INTERCEPT_ALL_THREADS) {
     old_reporter_ = impl->GetGlobalTestPartResultReporter();
     impl->SetGlobalTestPartResultReporter(this);
   } else {
     old_reporter_ = impl->GetTestPartResultReporterForCurrentThread();
     impl->SetTestPartResultReporterForCurrentThread(this);
   }
 }
 // The d'tor restores the test part result reporter used by Google Test
 // before.
 ScopedFakeTestPartResultReporter::~ScopedFakeTestPartResultReporter() {
   internal::UnitTestImpl* const impl = internal::GetUnitTestImpl();
   if (intercept_mode_ == INTERCEPT_ALL_THREADS) {
     impl->SetGlobalTestPartResultReporter(old_reporter_);
   } else {
     impl->SetTestPartResultReporterForCurrentThread(old_reporter_);
   }
 }
 // Increments the test part result count and remembers the result.
 // This method is from the TestPartResultReporterInterface interface.
 void ScopedFakeTestPartResultReporter::ReportTestPartResult(
     const TestPartResult& result) {
   result_->Append(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() {
   return GetTypeId<Test>();
 }
 // The value of GetTestTypeId() as seen from within the Google Test
 // library.  This is solely for testing GetTestTypeId().
 extern const TypeId kTestTypeIdInGoogleTest = GetTestTypeId();
 // This predicate-formatter checks that 'results' contains a test part
 // failure of the given type and that the failure message contains the
 // given substring.
 AssertionResult HasOneFailure(const char* /* results_expr */,
                               const char* /* type_expr */,
                               const char* /* substr_expr */,
                               const TestPartResultArray& results,
                               TestPartResult::Type type,
                               const string& substr) {
   const String expected(type == TestPartResult::kFatalFailure ?
                         "1 fatal failure" :
                         "1 non-fatal failure");
   Message msg;
   if (results.size() != 1) {
     msg << "Expected: " << expected << "\n"
         << "  Actual: " << results.size() << " failures";
     for (int i = 0; i < results.size(); i++) {
       msg << "\n" << results.GetTestPartResult(i);
     }
     return AssertionFailure() << msg;
   }
   const TestPartResult& r = results.GetTestPartResult(0);
   if (r.type() != type) {
     return AssertionFailure() << "Expected: " << expected << "\n"
                               << "  Actual:\n"
                               << r;
   }
   if (strstr(r.message(), substr.c_str()) == NULL) {
     return AssertionFailure() << "Expected: " << expected << " containing \""
                               << substr << "\"\n"
                               << "  Actual:\n"
                               << r;
   }
   return AssertionSuccess();
 }
 // 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 string& substr)
     : results_(results),
       type_(type),
       substr_(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() {
   EXPECT_PRED_FORMAT3(HasOneFailure, *results_, type_, substr_);
 }
 DefaultGlobalTestPartResultReporter::DefaultGlobalTestPartResultReporter(
     UnitTestImpl* unit_test) : unit_test_(unit_test) {}
 void DefaultGlobalTestPartResultReporter::ReportTestPartResult(
     const TestPartResult& result) {
   unit_test_->current_test_result()->AddTestPartResult(result);
   unit_test_->listeners()->repeater()->OnTestPartResult(result);
 }
 DefaultPerThreadTestPartResultReporter::DefaultPerThreadTestPartResultReporter(
     UnitTestImpl* unit_test) : unit_test_(unit_test) {}
 void DefaultPerThreadTestPartResultReporter::ReportTestPartResult(
     const TestPartResult& result) {
   unit_test_->GetGlobalTestPartResultReporter()->ReportTestPartResult(result);
 }
 // Returns the global test part result reporter.
 TestPartResultReporterInterface*
 UnitTestImpl::GetGlobalTestPartResultReporter() {
   internal::MutexLock lock(&global_test_part_result_reporter_mutex_);
   return global_test_part_result_repoter_;
 }
 // Sets the global test part result reporter.
 void UnitTestImpl::SetGlobalTestPartResultReporter(
     TestPartResultReporterInterface* reporter) {
   internal::MutexLock lock(&global_test_part_result_reporter_mutex_);
   global_test_part_result_repoter_ = reporter;
 }
 // Returns the test part result reporter for the current thread.
 TestPartResultReporterInterface*
 UnitTestImpl::GetTestPartResultReporterForCurrentThread() {
   return per_thread_test_part_result_reporter_.get();
 }
 // Sets the test part result reporter for the current thread.
 void UnitTestImpl::SetTestPartResultReporterForCurrentThread(
     TestPartResultReporterInterface* reporter) {
   per_thread_test_part_result_reporter_.set(reporter);
 }
 // Gets the number of successful test cases.
 int UnitTestImpl::successful_test_case_count() const {
   return CountIf(test_cases_, TestCasePassed);
 }
 // Gets the number of failed test cases.
 int UnitTestImpl::failed_test_case_count() const {
   return CountIf(test_cases_, TestCaseFailed);
 }
 // Gets the number of all test cases.
 int UnitTestImpl::total_test_case_count() const {
   return static_cast<int>(test_cases_.size());
 }
 // Gets the number of all test cases that contain at least one test
 // that should run.
 int UnitTestImpl::test_case_to_run_count() const {
   return CountIf(test_cases_, ShouldRunTestCase);
 }
 // Gets the number of successful tests.
 int UnitTestImpl::successful_test_count() const {
   return SumOverTestCaseList(test_cases_, &TestCase::successful_test_count);
 }
 // Gets the number of failed tests.
 int UnitTestImpl::failed_test_count() const {
   return SumOverTestCaseList(test_cases_, &TestCase::failed_test_count);
 }
 // Gets the number of disabled tests.
 int UnitTestImpl::disabled_test_count() const {
   return SumOverTestCaseList(test_cases_, &TestCase::disabled_test_count);
 }
 // Gets the number of all tests.
 int UnitTestImpl::total_test_count() const {
   return SumOverTestCaseList(test_cases_, &TestCase::total_test_count);
 }
 // Gets the number of tests that should run.
 int UnitTestImpl::test_to_run_count() const {
   return SumOverTestCaseList(test_cases_, &TestCase::test_to_run_count);
 }
 // Returns the current OS stack trace as a 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.
 String UnitTestImpl::CurrentOsStackTraceExceptTop(int skip_count) {
   (void)skip_count;
   return String("");
 }
 // Returns the current time in milliseconds.
 TimeInMillis GetTimeInMillis() {
 #if GTEST_OS_WINDOWS_MOBILE || defined(__BORLANDC__)
   // Difference between 1970-01-01 and 1601-01-01 in milliseconds.
   // http://analogous.blogspot.com/2005/04/epoch.html
   const TimeInMillis kJavaEpochToWinFileTimeDelta =
     static_cast<TimeInMillis>(116444736UL) * 100000UL;
   const DWORD kTenthMicrosInMilliSecond = 10000;
   SYSTEMTIME now_systime;
   FILETIME now_filetime;
   ULARGE_INTEGER now_int64;
   // TODO(kenton@google.com): Shouldn't this just use
   //   GetSystemTimeAsFileTime()?
   GetSystemTime(&now_systime);
   if (SystemTimeToFileTime(&now_systime, &now_filetime)) {
     now_int64.LowPart = now_filetime.dwLowDateTime;
     now_int64.HighPart = now_filetime.dwHighDateTime;
     now_int64.QuadPart = (now_int64.QuadPart / kTenthMicrosInMilliSecond) -
       kJavaEpochToWinFileTimeDelta;
     return now_int64.QuadPart;
   }
   return 0;
 #elif GTEST_OS_WINDOWS && !GTEST_HAS_GETTIMEOFDAY_
   __timeb64 now;
 # ifdef _MSC_VER
   // MSVC 8 deprecates _ftime64(), so we want to suppress warning 4996
   // (deprecated function) there.
   // TODO(kenton@google.com): Use GetTickCount()?  Or use
   //   SystemTimeToFileTime()
 #  pragma warning(push)          // Saves the current warning state.
 #  pragma warning(disable:4996)  // Temporarily disables warning 4996.
   _ftime64(&now);
 #  pragma warning(pop)           // Restores the warning state.
 # else
   _ftime64(&now);
 # endif  // _MSC_VER
   return static_cast<TimeInMillis>(now.time) * 1000 + now.millitm;
 #elif GTEST_HAS_GETTIMEOFDAY_
   struct timeval now;
   gettimeofday(&now, NULL);
   return static_cast<TimeInMillis>(now.tv_sec) * 1000 + now.tv_usec / 1000;
 #else
 # error "Don't know how to get the current time on your system."
 #endif
 }
 // Utilities
 // class String
 // Copies at most length characters from str into a newly-allocated
 // piece of memory of size length+1.  The memory is allocated with new[].
 // A terminating null byte is written to the memory, and a pointer to it
 // is returned.  If str is NULL, NULL is returned.
 static char* CloneString(const char* str, size_t length) {
   if (str == NULL) {
     return NULL;
   } else {
     char* const clone = new char[length + 1];
     posix::StrNCpy(clone, str, length);
     clone[length] = '\0';
     return clone;
   }
 }
 // Clones a 0-terminated C string, allocating memory using new.  The
 // caller is responsible for deleting[] the return value.  Returns the
 // cloned string, or NULL if the input is NULL.
 const char * String::CloneCString(const char* c_str) {
   return (c_str == NULL) ?
                     NULL : CloneString(c_str, strlen(c_str));
 }
 #if 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 NULL;
   const int length = strlen(ansi);
   const int unicode_length =
       MultiByteToWideChar(CP_ACP, 0, ansi, length,
                           NULL, 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 NULL;
   const int ansi_length =
       WideCharToMultiByte(CP_ACP, 0, utf16_str, -1,
                           NULL, 0, NULL, NULL);
   char* ansi = new char[ansi_length + 1];
   WideCharToMultiByte(CP_ACP, 0, utf16_str, -1,
                       ansi, ansi_length, NULL, NULL);
   ansi[ansi_length] = 0;
   return ansi;
 }
 #endif  // GTEST_OS_WINDOWS_MOBILE
 // Compares two C strings.  Returns true iff 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 ( lhs == NULL ) return rhs == NULL;
   if ( rhs == NULL ) return false;
   return strcmp(lhs, rhs) == 0;
 }
 #if GTEST_HAS_STD_WSTRING || GTEST_HAS_GLOBAL_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) {
   // TODO(wan): consider allowing a testing::String object to
   // contain '\0'.  This will make it behave more like std::string,
   // and will allow ToUtf8String() to return the correct encoding
   // for '\0' s.t. we can get rid of the conditional here (and in
   // several other places).
   for (size_t i = 0; i != length; ) {  // NOLINT
     if (wstr[i] != L'\0') {
       *msg << WideStringToUtf8(wstr + i, static_cast<int>(length - i));
       while (i != length && wstr[i] != L'\0')
         i++;
     } else {
       *msg << '\0';
       i++;
     }
   }
 }
 #endif  // GTEST_HAS_STD_WSTRING || GTEST_HAS_GLOBAL_WSTRING
 }  // namespace internal
 #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) {
   internal::StreamWideCharsToMessage(wstr.c_str(), wstr.length(), this);
   return *this;
 }
 #endif  // GTEST_HAS_STD_WSTRING
 #if GTEST_HAS_GLOBAL_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 ::wstring& wstr) {
   internal::StreamWideCharsToMessage(wstr.c_str(), wstr.length(), this);
   return *this;
 }
 #endif  // GTEST_HAS_GLOBAL_WSTRING
 // AssertionResult constructors.
 // Used in EXPECT_TRUE/FALSE(assertion_result).
 AssertionResult::AssertionResult(const AssertionResult& other)
     : success_(other.success_),
       message_(other.message_.get() != NULL ?
                new ::std::string(*other.message_) :
                static_cast< ::std::string*>(NULL)) {
 }
 // Returns the assertion's negation. Used with EXPECT/ASSERT_FALSE.
 AssertionResult AssertionResult::operator!() const {
   AssertionResult negation(!success_);
   if (message_.get() != NULL)
     negation << *message_;
   return negation;
 }
 // Makes a successful assertion result.
 AssertionResult AssertionSuccess() {
   return AssertionResult(true);
 }
 // Makes a failed assertion result.
 AssertionResult AssertionFailure() {
   return AssertionResult(false);
 }
 // Makes a failed assertion result with the given failure message.
 // Deprecated; use AssertionFailure() << message.
 AssertionResult AssertionFailure(const Message& message) {
   return AssertionFailure() << message;
 }
 namespace internal {
 // 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:
 //
 //   expected_expression: "foo"
 //   actual_expression:   "bar"
 //   expected_value:      "5"
 //   actual_value:        "6"
 //
 // The ignoring_case parameter is true iff the assertion is a
 // *_STRCASEEQ*.  When it's true, the string " (ignoring case)" will
 // be inserted into the message.
 AssertionResult EqFailure(const char* expected_expression,
                           const char* actual_expression,
                           const String& expected_value,
                           const String& actual_value,
                           bool ignoring_case) {
   Message msg;
   msg << "Value of: " << actual_expression;
   if (actual_value != actual_expression) {
     msg << "\n  Actual: " << actual_value;
   }
   msg << "\nExpected: " << expected_expression;
   if (ignoring_case) {
     msg << " (ignoring case)";
   }
   if (expected_value != expected_expression) {
     msg << "\nWhich is: " << expected_value;
   }
   return AssertionFailure() << msg;
 }
 // Constructs and returns the message for an equality assertion
 // (e.g. ASSERT_NE, EXPECT_NE, etc) failure.
 //
 // The first four parameters are the expressions used in the assertion
 // and their values, as strings.  For example, for ASSERT_NE(foo, bar)
 // where foo is 5 and bar is 6, we have:
 //
 //   expected_expression: "foo"
 //   actual_expression:   "bar"
 //   expected_value:      "5"
 //   actual_value:        "6"
 //
 // The ignoring_case parameter is true iff the assertion is a
 // *_STRCASENE*.  When it's true, the string " (ignoring case)" will
 // be inserted into the message.
 AssertionResult NeFailure(const char* expected_expression,
                           const char* actual_expression,
                           const String& expected_value,
                           const String& actual_value,
                           bool ignoring_case) {
   Message msg;
   msg << "Value of: " << actual_expression;
   if (actual_value != actual_expression) {
     msg << "\n  Actual: " << actual_value;
   }
   msg << "\nExpected: " << expected_expression;
   if (ignoring_case) {
     msg << " (ignoring case)";
   }
   if (expected_value != expected_expression) {
     msg << "\nWhich is: " << expected_value;
   }
   return AssertionFailure() << msg;
 }
 // Constructs a failure message for Boolean assertions such as EXPECT_TRUE.
 String GetBoolAssertionFailureMessage(const AssertionResult& assertion_result,
                                       const char* expression_text,
                                       const char* actual_predicate_value,
                                       const char* expected_predicate_value) {
   const char* actual_message = assertion_result.message();
   Message msg;
   msg << "Value of: " << expression_text
       << "\n  Actual: " << actual_predicate_value;
   if (actual_message[0] != '\0')
     msg << " (" << actual_message << ")";
   msg << "\nExpected: " << expected_predicate_value;
   return msg.GetString();
 }
 // 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) {
   const double diff = fabs(val1 - val2);
   if (diff <= abs_error) return AssertionSuccess();
   // TODO(wan): do not print the value of an expression if it's
   // already a literal.
   return AssertionFailure()
       << "The difference between " << expr1 << " and " << expr2
       << " is " << diff << ", which exceeds " << abs_error_expr << ", where\n"
       << expr1 << " evaluates to " << val1 << ",\n"
       << expr2 << " evaluates to " << val2 << ", and\n"
       << abs_error_expr << " evaluates to " << abs_error << ".";
 }
 // Helper template for implementing FloatLE() and DoubleLE().
 template <typename RawType>
 AssertionResult FloatingPointLE(const char* expr1,
                                 const char* expr2,
                                 RawType val1,
                                 RawType val2) {
   // Returns success if val1 is less than val2,
   if (val1 < val2) {
     return AssertionSuccess();
   }
   // or if val1 is almost equal to val2.
   const FloatingPoint<RawType> lhs(val1), rhs(val2);
   if (lhs.AlmostEquals(rhs)) {
     return AssertionSuccess();
   }
   // Note that the above two checks will both fail if either val1 or
   // val2 is NaN, as the IEEE floating-point standard requires that
   // any predicate involving a NaN must return false.
   ::std::stringstream val1_ss;
   val1_ss << std::setprecision(std::numeric_limits<RawType>::digits10 + 2)
           << val1;
   ::std::stringstream val2_ss;
   val2_ss << std::setprecision(std::numeric_limits<RawType>::digits10 + 2)
           << val2;
   return AssertionFailure()
       << "Expected: (" << expr1 << ") <= (" << expr2 << ")\n"
       << "  Actual: " << StringStreamToString(&val1_ss) << " vs "
       << StringStreamToString(&val2_ss);
 }
 }  // 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) {
   return internal::FloatingPointLE<float>(expr1, expr2, val1, 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) {
   return internal::FloatingPointLE<double>(expr1, expr2, val1, val2);
 }
 namespace internal {
 // The helper function for {ASSERT|EXPECT}_EQ with int or enum
 // arguments.
 AssertionResult CmpHelperEQ(const char* expected_expression,
                             const char* actual_expression,
                             BiggestInt expected,
                             BiggestInt actual) {
   if (expected == actual) {
     return AssertionSuccess();
   }
   return EqFailure(expected_expression,
                    actual_expression,
                    FormatForComparisonFailureMessage(expected, actual),
                    FormatForComparisonFailureMessage(actual, expected),
                    false);
 }
 // A macro for implementing the helper functions needed to implement
 // ASSERT_?? and EXPECT_?? with integer or enum arguments.  It is here
 // just to avoid copy-and-paste of similar code.
 #define GTEST_IMPL_CMP_HELPER_(op_name, op)\
 AssertionResult CmpHelper##op_name(const char* expr1, const char* expr2, \
                                    BiggestInt val1, BiggestInt val2) {\
   if (val1 op val2) {\
     return AssertionSuccess();\
   } else {\
     return AssertionFailure() \
         << "Expected: (" << expr1 << ") " #op " (" << expr2\
         << "), actual: " << FormatForComparisonFailureMessage(val1, val2)\
         << " vs " << FormatForComparisonFailureMessage(val2, val1);\
   }\
 }
 // Implements the helper function for {ASSERT|EXPECT}_NE with int or
 // enum arguments.
 GTEST_IMPL_CMP_HELPER_(NE, !=)
 // Implements the helper function for {ASSERT|EXPECT}_LE with int or
 // enum arguments.
 GTEST_IMPL_CMP_HELPER_(LE, <=)
 // Implements the helper function for {ASSERT|EXPECT}_LT with int or
 // enum arguments.
 GTEST_IMPL_CMP_HELPER_(LT, < )
 // Implements the helper function for {ASSERT|EXPECT}_GE with int or
 // enum arguments.
 GTEST_IMPL_CMP_HELPER_(GE, >=)
 // Implements the helper function for {ASSERT|EXPECT}_GT with int or
 // enum arguments.
 GTEST_IMPL_CMP_HELPER_(GT, > )
 #undef GTEST_IMPL_CMP_HELPER_
 // The helper function for {ASSERT|EXPECT}_STREQ.
 AssertionResult CmpHelperSTREQ(const char* expected_expression,
                                const char* actual_expression,
                                const char* expected,
                                const char* actual) {
   if (String::CStringEquals(expected, actual)) {
     return AssertionSuccess();
   }
   return EqFailure(expected_expression,
                    actual_expression,
                    PrintToString(expected),
                    PrintToString(actual),
                    false);
 }
 // The helper function for {ASSERT|EXPECT}_STRCASEEQ.
 AssertionResult CmpHelperSTRCASEEQ(const char* expected_expression,
                                    const char* actual_expression,
                                    const char* expected,
                                    const char* actual) {
   if (String::CaseInsensitiveCStringEquals(expected, actual)) {
     return AssertionSuccess();
   }
   return EqFailure(expected_expression,
                    actual_expression,
                    PrintToString(expected),
                    PrintToString(actual),
                    true);
 }
 // The helper function for {ASSERT|EXPECT}_STRNE.
 AssertionResult CmpHelperSTRNE(const char* s1_expression,
                                const char* s2_expression,
                                const char* s1,
                                const char* s2) {
   if (!String::CStringEquals(s1, s2)) {
     return AssertionSuccess();
   } else {
     return AssertionFailure() << "Expected: (" << s1_expression << ") != ("
                               << s2_expression << "), actual: \""
                               << s1 << "\" vs \"" << s2 << "\"";
   }
 }
 // The helper function for {ASSERT|EXPECT}_STRCASENE.
 AssertionResult CmpHelperSTRCASENE(const char* s1_expression,
                                    const char* s2_expression,
                                    const char* s1,
                                    const char* s2) {
   if (!String::CaseInsensitiveCStringEquals(s1, s2)) {
     return AssertionSuccess();
   } else {
     return AssertionFailure()
         << "Expected: (" << s1_expression << ") != ("
         << s2_expression << ") (ignoring case), actual: \""
         << s1 << "\" vs \"" << s2 << "\"";
   }
 }
 }  // namespace internal
 namespace {
 // Helper functions for implementing IsSubString() and IsNotSubstring().
 // This group of overloaded functions return true iff needle is a
 // substring of haystack.  NULL is considered a substring of itself
 // only.
 bool IsSubstringPred(const char* needle, const char* haystack) {
   if (needle == NULL || haystack == NULL)
     return needle == haystack;
   return strstr(haystack, needle) != NULL;
 }
 bool IsSubstringPred(const wchar_t* needle, const wchar_t* haystack) {
   if (needle == NULL || haystack == NULL)
     return needle == haystack;
   return wcsstr(haystack, needle) != NULL;
 }
 // StringType here can be either ::std::string or ::std::wstring.
 template <typename StringType>
 bool IsSubstringPred(const StringType& needle,
                      const StringType& haystack) {
   return haystack.find(needle) != StringType::npos;
 }
 // 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) {
   if (IsSubstringPred(needle, haystack) == expected_to_be_substring)
     return AssertionSuccess();
   const bool is_wide_string = sizeof(needle[0]) > 1;
   const char* const begin_string_quote = is_wide_string ? "L\"" : "\"";
   return AssertionFailure()
       << "Value of: " << needle_expr << "\n"
       << "  Actual: " << begin_string_quote << needle << "\"\n"
       << "Expected: " << (expected_to_be_substring ? "" : "not ")
       << "a substring of " << haystack_expr << "\n"
       << "Which is: " << begin_string_quote << 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) {
   return IsSubstringImpl(true, needle_expr, haystack_expr, needle, haystack);
 }
 AssertionResult IsSubstring(
     const char* needle_expr, const char* haystack_expr,
     const wchar_t* needle, const wchar_t* haystack) {
   return IsSubstringImpl(true, needle_expr, haystack_expr, needle, haystack);
 }
 AssertionResult IsNotSubstring(
     const char* needle_expr, const char* haystack_expr,
     const char* needle, const char* haystack) {
   return IsSubstringImpl(false, needle_expr, haystack_expr, needle, haystack);
 }
 AssertionResult IsNotSubstring(
     const char* needle_expr, const char* haystack_expr,
     const wchar_t* needle, const wchar_t* haystack) {
   return IsSubstringImpl(false, needle_expr, haystack_expr, needle, haystack);
 }
 AssertionResult IsSubstring(
     const char* needle_expr, const char* haystack_expr,
     const ::std::string& needle, const ::std::string& haystack) {
   return IsSubstringImpl(true, needle_expr, haystack_expr, needle, haystack);
 }
 AssertionResult IsNotSubstring(
     const char* needle_expr, const char* haystack_expr,
     const ::std::string& needle, const ::std::string& haystack) {
   return IsSubstringImpl(false, needle_expr, haystack_expr, needle, haystack);
 }
 #if GTEST_HAS_STD_WSTRING
 AssertionResult IsSubstring(
     const char* needle_expr, const char* haystack_expr,
     const ::std::wstring& needle, const ::std::wstring& haystack) {
   return IsSubstringImpl(true, needle_expr, haystack_expr, needle, haystack);
 }
 AssertionResult IsNotSubstring(
     const char* needle_expr, const char* haystack_expr,
     const ::std::wstring& needle, const ::std::wstring& haystack) {
   return IsSubstringImpl(false, needle_expr, haystack_expr, needle, haystack);
 }
 #endif  // GTEST_HAS_STD_WSTRING
 namespace internal {
 #if GTEST_OS_WINDOWS
 namespace {
 // Helper function for IsHRESULT{SuccessFailure} predicates
 AssertionResult HRESULTFailureHelper(const char* expr,
                                      const char* expected,
                                      long hr) {  // NOLINT
 # if GTEST_OS_WINDOWS_MOBILE
   // 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;  // String::Format can't exceed this length.
   // Gets the system's human readable message string for this HRESULT.
   char error_text[kBufSize] = { '\0' };
   DWORD message_length = ::FormatMessageA(kFlags,
 ,  // no source, we're asking system
                                           hr,  // the error
 ,  // no line width restrictions
                                           error_text,  // output buffer
                                           kBufSize,  // buf size
                                           NULL);  // 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 String error_hex(String::Format("0x%08X ", 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 upto 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.
 const UInt32 kMaxCodePoint1 = (static_cast<UInt32>(1) <<  7) - 1;
 // The maximum code-point a two-byte UTF-8 sequence can represent.
 const UInt32 kMaxCodePoint2 = (static_cast<UInt32>(1) << (5 + 6)) - 1;
 // The maximum code-point a three-byte UTF-8 sequence can represent.
 const UInt32 kMaxCodePoint3 = (static_cast<UInt32>(1) << (4 + 2*6)) - 1;
 // The maximum code-point a four-byte UTF-8 sequence can represent.
 const UInt32 kMaxCodePoint4 = (static_cast<UInt32>(1) << (3 + 3*6)) - 1;
 // 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 ChopLowBits(UInt32* bits, int n) {
   const UInt32 low_bits = *bits & ((static_cast<UInt32>(1) << n) - 1);
   *bits >>= n;
   return low_bits;
 }
 // Converts a Unicode code point to a narrow string in UTF-8 encoding.
 // code_point parameter is of type UInt32 because wchar_t may not be
 // wide enough to contain a code point.
 // The output buffer str must containt at least 32 characters.
 // The function returns the address of the output buffer.
 // 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 output
 // as '(Invalid Unicode 0xXXXXXXXX)'.
 char* CodePointToUtf8(UInt32 code_point, char* str) {
   if (code_point <= kMaxCodePoint1) {
     str[1] = '\0';
     str[0] = static_cast<char>(code_point);                          // 0xxxxxxx
   } else if (code_point <= kMaxCodePoint2) {
     str[2] = '\0';
     str[1] = static_cast<char>(0x80 | ChopLowBits(&code_point, 6));  // 10xxxxxx
     str[0] = static_cast<char>(0xC0 | code_point);                   // 110xxxxx
   } else if (code_point <= kMaxCodePoint3) {
     str[3] = '\0';
     str[2] = static_cast<char>(0x80 | ChopLowBits(&code_point, 6));  // 10xxxxxx
     str[1] = static_cast<char>(0x80 | ChopLowBits(&code_point, 6));  // 10xxxxxx
     str[0] = static_cast<char>(0xE0 | code_point);                   // 1110xxxx
   } else if (code_point <= kMaxCodePoint4) {
     str[4] = '\0';
     str[3] = static_cast<char>(0x80 | ChopLowBits(&code_point, 6));  // 10xxxxxx
     str[2] = static_cast<char>(0x80 | ChopLowBits(&code_point, 6));  // 10xxxxxx
     str[1] = static_cast<char>(0x80 | ChopLowBits(&code_point, 6));  // 10xxxxxx
     str[0] = static_cast<char>(0xF0 | code_point);                   // 11110xxx
   } else {
     // The longest string String::Format can produce when invoked
     // with these parameters is 28 character long (not including
     // the terminating nul character). We are asking for 32 character
     // buffer just in case. This is also enough for strncpy to
     // null-terminate the destination string.
     posix::StrNCpy(
         str, String::Format("(Invalid Unicode 0x%X)", code_point).c_str(), 32);
     str[31] = '\0';  // Makes sure no change in the format to strncpy leaves
                      // the result unterminated.
   }
   return str;
 }
 // The following two functions only make sense if the the system
 // uses UTF-16 for wide string encoding. All supported systems
 // with 16 bit wchar_t (Windows, Cygwin, Symbian OS) 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) {
   return sizeof(wchar_t) == 2 &&
       (first & 0xFC00) == 0xD800 && (second & 0xFC00) == 0xDC00;
 }
 // Creates a Unicode code point from UTF16 surrogate pair.
 inline UInt32 CreateCodePointFromUtf16SurrogatePair(wchar_t first,
                                                     wchar_t second) {
   const UInt32 mask = (1 << 10) - 1;
   return (sizeof(wchar_t) == 2) ?
       (((first & mask) << 10) | (second & mask)) + 0x10000 :
       // This function should not be called when the condition is
       // false, but we provide a sensible default in case it is.
       static_cast<UInt32>(first);
 }
 // Converts a wide string to a narrow string in UTF-8 encoding.
 // The wide string is assumed to have the following encoding:
 //   UTF-16 if sizeof(wchar_t) == 2 (on Windows, Cygwin, Symbian OS)
 //   UTF-32 if sizeof(wchar_t) == 4 (on Linux)
 // Parameter str points to a null-terminated wide string.
 // Parameter num_chars may additionally limit the number
 // of wchar_t characters processed. -1 is used when the entire string
 // should be processed.
 // If the string contains code points that are not valid Unicode code points
 // (i.e. outside of Unicode range U+0 to U+10FFFF) they will be output
 // as '(Invalid Unicode 0xXXXXXXXX)'. If the string is in UTF16 encoding
 // and contains invalid UTF-16 surrogate pairs, values in those pairs
 // will be encoded as individual Unicode characters from Basic Normal Plane.
 String WideStringToUtf8(const wchar_t* str, int num_chars) {
   if (num_chars == -1)
     num_chars = static_cast<int>(wcslen(str));
   ::std::stringstream stream;
   for (int i = 0; i < num_chars; ++i) {
     UInt32 unicode_code_point;
     if (str[i] == L'\0') {
       break;
     } else if (i + 1 < num_chars && IsUtf16SurrogatePair(str[i], str[i + 1])) {
       unicode_code_point = CreateCodePointFromUtf16SurrogatePair(str[i],
                                                                  str[i + 1]);
       i++;
     } else {
       unicode_code_point = static_cast<UInt32>(str[i]);
     }
     char buffer[32];  // CodePointToUtf8 requires a buffer this big.
     stream << CodePointToUtf8(unicode_code_point, buffer);
   }
   return StringStreamToString(&stream);
 }
 // Converts a wide C string to a String using the UTF-8 encoding.
 // NULL will be converted to "(null)".
 String String::ShowWideCString(const wchar_t * wide_c_str) {
   if (wide_c_str == NULL) return String("(null)");
   return String(internal::WideStringToUtf8(wide_c_str, -1).c_str());
 }
 // Compares two wide C strings.  Returns true iff 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) {
   if (lhs == NULL) return rhs == NULL;
   if (rhs == NULL) return false;
   return wcscmp(lhs, rhs) == 0;
 }
 // Helper function for *_STREQ on wide strings.
 AssertionResult CmpHelperSTREQ(const char* expected_expression,
                                const char* actual_expression,
                                const wchar_t* expected,
                                const wchar_t* actual) {
   if (String::WideCStringEquals(expected, actual)) {
     return AssertionSuccess();
   }
   return EqFailure(expected_expression,
                    actual_expression,
                    PrintToString(expected),
                    PrintToString(actual),
                    false);
 }
 // 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) {
   if (!String::WideCStringEquals(s1, s2)) {
     return AssertionSuccess();
   }
   return AssertionFailure() << "Expected: (" << s1_expression << ") != ("
                             << s2_expression << "), actual: "
                             << PrintToString(s1)
                             << " vs " << PrintToString(s2);
 }
 // Compares two C strings, ignoring case.  Returns true iff 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) {
   if (lhs == NULL)
     return rhs == NULL;
   if (rhs == NULL)
     return false;
   return posix::StrCaseCmp(lhs, rhs) == 0;
 }
   // Compares two wide C strings, ignoring case.  Returns true iff 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) {
   if (lhs == NULL) return rhs == NULL;
   if (rhs == NULL) return false;
 #if GTEST_OS_WINDOWS
   return _wcsicmp(lhs, rhs) == 0;
 #elif GTEST_OS_LINUX && !GTEST_OS_LINUX_ANDROID
   return wcscasecmp(lhs, rhs) == 0;
 #else
   // Android, Mac OS X and Cygwin don't define wcscasecmp.
   // Other unknown OSes may not define it either.
   wint_t left, right;
   do {
     left = towlower(*lhs++);
     right = towlower(*rhs++);
   } while (left && left == right);
   return left == right;
 #endif  // OS selector
 }
 // Compares this with another String.
 // Returns < 0 if this is less than rhs, 0 if this is equal to rhs, or > 0
 // if this is greater than rhs.
 int String::Compare(const String & rhs) const {
   const char* const lhs_c_str = c_str();
   const char* const rhs_c_str = rhs.c_str();
   if (lhs_c_str == NULL) {
     return rhs_c_str == NULL ? 0 : -1;  // NULL < anything except NULL
   } else if (rhs_c_str == NULL) {
     return 1;
   }
   const size_t shorter_str_len =
       length() <= rhs.length() ? length() : rhs.length();
   for (size_t i = 0; i != shorter_str_len; i++) {
     if (lhs_c_str[i] < rhs_c_str[i]) {
       return -1;
     } else if (lhs_c_str[i] > rhs_c_str[i]) {
       return 1;
     }
   }
   return (length() < rhs.length()) ? -1 :
       (length() > rhs.length()) ? 1 : 0;
 }
 // Returns true iff this String ends with the given suffix.  *Any*
 // String is considered to end with a NULL or empty suffix.
 bool String::EndsWith(const char* suffix) const {
   if (suffix == NULL || CStringEquals(suffix, "")) return true;
   if (c_str() == NULL) return false;
   const size_t this_len = strlen(c_str());
   const size_t suffix_len = strlen(suffix);
   return (this_len >= suffix_len) &&
          CStringEquals(c_str() + this_len - suffix_len, suffix);
 }
 // Returns true iff this String ends with the given suffix, ignoring case.
 // Any String is considered to end with a NULL or empty suffix.
 bool String::EndsWithCaseInsensitive(const char* suffix) const {
   if (suffix == NULL || CStringEquals(suffix, "")) return true;
   if (c_str() == NULL) return false;
   const size_t this_len = strlen(c_str());
   const size_t suffix_len = strlen(suffix);
   return (this_len >= suffix_len) &&
          CaseInsensitiveCStringEquals(c_str() + this_len - suffix_len, suffix);
 }
 // Formats a list of arguments to a String, using the same format
 // spec string as for printf.
 //
 // We do not use the StringPrintf class as it is not universally
 // available.
 //
 // The result is limited to 4096 characters (including the tailing 0).
 // If 4096 characters are not enough to format the input, or if
 // there's an error, "<formatting error or buffer exceeded>" is
 // returned.
 String String::Format(const char * format, ...) {
   va_list args;
   va_start(args, format);
   char buffer[4096];
   const int kBufferSize = sizeof(buffer)/sizeof(buffer[0]);
   // MSVC 8 deprecates vsnprintf(), so we want to suppress warning
   // 4996 (deprecated function) there.
 #ifdef _MSC_VER  // We are using MSVC.
 # pragma warning(push)          // Saves the current warning state.
 # pragma warning(disable:4996)  // Temporarily disables warning 4996.
   const int size = vsnprintf(buffer, kBufferSize, format, args);
 # pragma warning(pop)           // Restores the warning state.
 #else  // We are not using MSVC.
   const int size = vsnprintf(buffer, kBufferSize, format, args);
 #endif  // _MSC_VER
   va_end(args);
   // vsnprintf()'s behavior is not portable.  When the buffer is not
   // big enough, it returns a negative value in MSVC, and returns the
   // needed buffer size on Linux.  When there is an output error, it
   // always returns a negative value.  For simplicity, we lump the two
   // error cases together.
   if (size < 0 || size >= kBufferSize) {
     return String("<formatting error or buffer exceeded>");
   } else {
     return String(buffer, size);
   }
 }
 // Converts the buffer in a stringstream to a String, converting NUL
 // bytes to "\\0" along the way.
 String StringStreamToString(::std::stringstream* ss) {
   const ::std::string& str = ss->str();
   const char* const start = str.c_str();
   const char* const end = start + str.length();
   // We need to use a helper stringstream to do this transformation
   // because String doesn't support push_back().
   ::std::stringstream helper;
   for (const char* ch = start; ch != end; ++ch) {
     if (*ch == '\0') {
       helper << "\\0";  // Replaces NUL with "\\0";
     } else {
       helper.put(*ch);
     }
   }
   return String(helper.str().c_str());
 }
 // Appends the user-supplied message to the Google-Test-generated message.
 String AppendUserMessage(const String& gtest_msg,
                          const Message& user_msg) {
   // Appends the user message if it's non-empty.
   const String user_msg_string = user_msg.GetString();
   if (user_msg_string.empty()) {
     return gtest_msg;
   }
   Message msg;
   msg << gtest_msg << "\n" << user_msg_string;
   return msg.GetString();
 }
 }  // namespace internal
 // class TestResult
 // Creates an empty TestResult.
 TestResult::TestResult()
     : death_test_count_(0),
       elapsed_time_(0) {
 }
 // D'tor.
 TestResult::~TestResult() {
 }
 // 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 {
   if (i < 0 || i >= total_part_count())
     internal::posix::Abort();
   return test_part_results_.at(i);
 }
 // 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 {
   if (i < 0 || i >= test_property_count())
     internal::posix::Abort();
   return test_properties_.at(i);
 }
 // Clears the test part results.
 void TestResult::ClearTestPartResults() {
   test_part_results_.clear();
 }
 // Adds a test part result to the list.
 void TestResult::AddTestPartResult(const TestPartResult& test_part_result) {
   test_part_results_.push_back(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 TestProperty& test_property) {
   if (!ValidateTestProperty(test_property)) {
     return;
   }
   internal::MutexLock lock(&test_properites_mutex_);
   const std::vector<TestProperty>::iterator property_with_matching_key =
       std::find_if(test_properties_.begin(), test_properties_.end(),
                    internal::TestPropertyKeyIs(test_property.key()));
   if (property_with_matching_key == test_properties_.end()) {
     test_properties_.push_back(test_property);
     return;
   }
   property_with_matching_key->SetValue(test_property.value());
 }
 // Adds a failure if the key is a reserved attribute of Google Test
 // testcase tags.  Returns true if the property is valid.
 bool TestResult::ValidateTestProperty(const TestProperty& test_property) {
   internal::String key(test_property.key());
   if (key == "name" || key == "status" || key == "time" || key == "classname") {
     ADD_FAILURE()
         << "Reserved key used in RecordProperty(): "
         << key
         << " ('name', 'status', 'time', and 'classname' are reserved by "
         << GTEST_NAME_ << ")";
     return false;
   }
   return true;
 }
 // Clears the object.
 void TestResult::Clear() {
   test_part_results_.clear();
   test_properties_.clear();
   death_test_count_ = 0;
   elapsed_time_ = 0;
 }
 // Returns true iff the test failed.
 bool TestResult::Failed() const {
   for (int i = 0; i < total_part_count(); ++i) {
     if (GetTestPartResult(i).failed())
       return true;
   }
   return false;
 }
 // Returns true iff the test part fatally failed.
 static bool TestPartFatallyFailed(const TestPartResult& result) {
   return result.fatally_failed();
 }
 // Returns true iff the test fatally failed.
 bool TestResult::HasFatalFailure() const {
   return CountIf(test_part_results_, TestPartFatallyFailed) > 0;
 }
 // Returns true iff the test part non-fatally failed.
 static bool TestPartNonfatallyFailed(const TestPartResult& result) {
   return result.nonfatally_failed();
 }
 // Returns true iff the test has a non-fatal failure.
 bool TestResult::HasNonfatalFailure() const {
   return CountIf(test_part_results_, TestPartNonfatallyFailed) > 0;
 }
 // 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 {
   return static_cast<int>(test_part_results_.size());
 }
 // Returns the number of the test properties.
 int TestResult::test_property_count() const {
   return static_cast<int>(test_properties_.size());
 }
 // class Test
 // Creates a Test object.
 // The c'tor saves the values of all Google Test flags.
 Test::Test()
     : gtest_flag_saver_(new internal::GTestFlagSaver) {
 }
 // The d'tor restores the values of all Google Test flags.
 Test::~Test() {
   delete gtest_flag_saver_;
 }
 // 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 char* key, const char* value) {
   UnitTest::GetInstance()->RecordPropertyForCurrentTest(key, value);
 }
 // Allows user supplied key value pairs to be recorded for later output.
 void Test::RecordProperty(const char* key, int value) {
   Message value_message;
   value_message << value;
   RecordProperty(key, value_message.GetString().c_str());
 }
 namespace internal {
 void ReportFailureInUnknownLocation(TestPartResult::Type result_type,
                                     const String& message) {
   // This function is a friend of UnitTest and as such has access to
   // AddTestPartResult.
   UnitTest::GetInstance()->AddTestPartResult(
       result_type,
       NULL,  // No info about the source file where the exception occurred.
       -1,    // We have no info on which line caused the exception.
       message,
       String());  // No stack trace, either.
 }
 }  // namespace internal
 // Google Test requires all tests in the same test case 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 case.  If
 // yes, it returns true; otherwise it generates a Google Test failure and
 // returns false.
 bool Test::HasSameFixtureClass() {
   internal::UnitTestImpl* const impl = internal::GetUnitTestImpl();
   const TestCase* const test_case = impl->current_test_case();
   // Info about the first test in the current test case.
   const TestInfo* const first_test_info = test_case->test_info_list()[0];
   const internal::TypeId first_fixture_id = first_test_info->fixture_class_id_;
   const char* const first_test_name = first_test_info->name();
   // Info about the current test.
   const TestInfo* const this_test_info = impl->current_test_info();
   const internal::TypeId this_fixture_id = this_test_info->fixture_class_id_;
   const char* const this_test_name = this_test_info->name();
   if (this_fixture_id != first_fixture_id) {
     // Is the first test defined using TEST?
     const bool first_is_TEST = first_fixture_id == internal::GetTestTypeId();
     // Is this test defined using TEST?
     const bool this_is_TEST = this_fixture_id == internal::GetTestTypeId();
     if (first_is_TEST || this_is_TEST) {
       // The user mixed TEST and TEST_F in this test case - we'll tell
       // him/her how to fix it.
       // Gets the name of the TEST and the name of the TEST_F.  Note
       // that first_is_TEST and this_is_TEST cannot both be true, as
       // the fixture IDs are different for the two tests.
       const char* const TEST_name =
           first_is_TEST ? first_test_name : this_test_name;
       const char* const TEST_F_name =
           first_is_TEST ? this_test_name : first_test_name;
       ADD_FAILURE()
           << "All tests in the same test case must use the same test fixture\n"
           << "class, so mixing TEST_F and TEST in the same test case is\n"
           << "illegal.  In test case " << this_test_info->test_case_name()
           << ",\n"
           << "test " << TEST_F_name << " is defined using TEST_F but\n"
           << "test " << TEST_name << " is defined using TEST.  You probably\n"
           << "want to change the TEST to TEST_F or move it to another test\n"
           << "case.";
     } else {
       // The user defined two fixture classes with the same name in
       // two namespaces - we'll tell him/her how to fix it.
       ADD_FAILURE()
           << "All tests in the same test case must use the same test fixture\n"
           << "class.  However, in test case "
           << this_test_info->test_case_name() << ",\n"
           << "you defined test " << first_test_name
           << " and test " << this_test_name << "\n"
           << "using two different test fixture classes.  This can happen if\n"
           << "the two classes are from different namespaces or translation\n"
           << "units and have the same name.  You should probably rename one\n"
           << "of the classes to put the tests into different test cases.";
     }
     return false;
   }
   return true;
 }
 #if GTEST_HAS_SEH
 // Adds an "exception thrown" fatal failure to the current test.  This
 // function returns its result via an output parameter pointer because VC++
 // prohibits creation of objects with destructors on stack in functions
 // using __try (see error C2712).
 static internal::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 new internal::String(message.GetString());
 }
 #endif  // GTEST_HAS_SEH
 #if GTEST_HAS_EXCEPTIONS
 // Adds an "exception thrown" fatal failure to the current test.
 static internal::String FormatCxxExceptionMessage(const char* description,
                                                   const char* location) {
   Message message;
   if (description != NULL) {
     message << "C++ exception with description \"" << description << "\"";
   } else {
     message << "Unknown C++ exception";
   }
   message << " thrown in " << location << ".";
   return message.GetString();
 }
 static internal::String PrintTestPartResultToString(
     const TestPartResult& test_part_result);
 // A failed Google Test assertion will throw an exception of this type when
 // GTEST_FLAG(throw_on_failure) is true (if exceptions are enabled).  We
 // derive it from std::runtime_error, which is for errors presumably
 // detectable only at run time.  Since std::runtime_error inherits from
 // std::exception, many testing frameworks know how to extract and print the
 // message inside it.
 class GoogleTestFailureException : public ::std::runtime_error {
  public:
   explicit GoogleTestFailureException(const TestPartResult& failure)
       : ::std::runtime_error(PrintTestPartResultToString(failure).c_str()) {}
 };
 #endif  // GTEST_HAS_EXCEPTIONS
 namespace internal {
 // 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) {
 #if GTEST_HAS_SEH
   __try {
     return (object->*method)();
   } __except (internal::UnitTestOptions::GTestShouldProcessSEH(  // NOLINT
       GetExceptionCode())) {
     // We create the exception message on the heap because VC++ prohibits
     // creation of objects with destructors on stack in functions using __try
     // (see error C2712).
     internal::String* exception_message = FormatSehExceptionMessage(
         GetExceptionCode(), location);
     internal::ReportFailureInUnknownLocation(TestPartResult::kFatalFailure,
                                              *exception_message);
     delete exception_message;
     return static_cast<Result>(0);
   }
 #else
   (void)location;
   return (object->*method)();
 #endif  // GTEST_HAS_SEH
 }
 // 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) {
   // NOTE: The user code can affect the way in which Google Test handles
   // exceptions by setting GTEST_FLAG(catch_exceptions), but only before
   // RUN_ALL_TESTS() starts. It is technically possible to check the flag
   // after the exception is caught and either report or re-throw the
   // exception based on the flag's value:
   //
   // try {
   //   // Perform the test method.
   // } catch (...) {
   //   if (GTEST_FLAG(catch_exceptions))
   //     // Report the exception as failure.
   //   else
   //     throw;  // Re-throws the original exception.
   // }
   //
   // However, the purpose of this flag is to allow the program to drop into
   // the debugger when the exception is thrown. On most platforms, once the
   // control enters the catch block, the exception origin information is
   // lost and the debugger will stop the program at the point of the
   // re-throw in this function -- instead of at the point of the original
   // throw statement in the code under test.  For this reason, we perform
   // the check early, sacrificing the ability to affect Google Test's
   // exception handling in the method where the exception is thrown.
   if (internal::GetUnitTestImpl()->catch_exceptions()) {
 #if GTEST_HAS_EXCEPTIONS
     try {
       return HandleSehExceptionsInMethodIfSupported(object, method, location);
     } catch (const GoogleTestFailureException&) {  // NOLINT
       // This exception doesn't originate in code under test. It makes no
       // sense to report it as a test failure.
       throw;
     } catch (const std::exception& e) {  // NOLINT
       internal::ReportFailureInUnknownLocation(
           TestPartResult::kFatalFailure,
           FormatCxxExceptionMessage(e.what(), location));
     } catch (...) {  // NOLINT
       internal::ReportFailureInUnknownLocation(
           TestPartResult::kFatalFailure,
           FormatCxxExceptionMessage(NULL, location));
     }
     return static_cast<Result>(0);
 #else
     return HandleSehExceptionsInMethodIfSupported(object, method, location);
 #endif  // GTEST_HAS_EXCEPTIONS
   } else {
     return (object->*method)();
   }
 }
 }  // namespace internal
 // Runs the test and updates the test result.
 void Test::Run() {
   if (!HasSameFixtureClass()) return;
   internal::UnitTestImpl* const impl = internal::GetUnitTestImpl();
   impl->os_stack_trace_getter()->UponLeavingGTest();
   internal::HandleExceptionsInMethodIfSupported(this, &Test::SetUp, "SetUp()");
   // We will run the test only if SetUp() was successful.
   if (!HasFatalFailure()) {
     impl->os_stack_trace_getter()->UponLeavingGTest();
     internal::HandleExceptionsInMethodIfSupported(
         this, &Test::TestBody, "the test body");
   }
   // However, we want to clean up as much as possible.  Hence we will
   // always call TearDown(), even if SetUp() or the test body has
   // failed.
   impl->os_stack_trace_getter()->UponLeavingGTest();
   internal::HandleExceptionsInMethodIfSupported(
       this, &Test::TearDown, "TearDown()");
 }
 // Returns true iff the current test has a fatal failure.
 bool Test::HasFatalFailure() {
   return internal::GetUnitTestImpl()->current_test_result()->HasFatalFailure();
 }
 // Returns true iff the current test has a non-fatal failure.
 bool Test::HasNonfatalFailure() {
   return internal::GetUnitTestImpl()->current_test_result()->
       HasNonfatalFailure();
 }
 // class TestInfo
 // Constructs a TestInfo object. It assumes ownership of the test factory
 // object.
 // TODO(vladl@google.com): Make a_test_case_name and a_name const string&'s
 // to signify they cannot be NULLs.
 TestInfo::TestInfo(const char* a_test_case_name,
                    const char* a_name,
                    const char* a_type_param,
                    const char* a_value_param,
                    internal::TypeId fixture_class_id,
                    internal::TestFactoryBase* factory)
     : test_case_name_(a_test_case_name),
       name_(a_name),
       type_param_(a_type_param ? new std::string(a_type_param) : NULL),
       value_param_(a_value_param ? new std::string(a_value_param) : NULL),
       fixture_class_id_(fixture_class_id),
       should_run_(false),
       is_disabled_(false),
       matches_filter_(false),
       factory_(factory),
       result_() {}
 // Destructs a TestInfo object.
 TestInfo::~TestInfo() { delete factory_; }
 namespace internal {
 // Creates a new TestInfo object and registers it with Google Test;
 // returns the created object.
 //
 // Arguments:
 //
 //   test_case_name:   name of the test case
 //   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.
 //   fixture_class_id: ID of the test fixture class
 //   set_up_tc:        pointer to the function that sets up the test case
 //   tear_down_tc:     pointer to the function that tears down the test case
 //   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_case_name, const char* name,
     const char* type_param,
     const char* value_param,
     TypeId fixture_class_id,
     SetUpTestCaseFunc set_up_tc,
     TearDownTestCaseFunc tear_down_tc,
     TestFactoryBase* factory) {
   TestInfo* const test_info =
       new TestInfo(test_case_name, name, type_param, value_param,
                    fixture_class_id, factory);
   GetUnitTestImpl()->AddTestInfo(set_up_tc, tear_down_tc, test_info);
   return test_info;
 }
 #if GTEST_HAS_PARAM_TEST
 void ReportInvalidTestCaseType(const char* test_case_name,
                                const char* file, int line) {
   Message errors;
   errors
       << "Attempted redefinition of test case " << test_case_name << ".\n"
       << "All tests in the same test case must use the same test fixture\n"
       << "class.  However, in test case " << test_case_name << ", you tried\n"
       << "to define a test using a fixture class different from the one\n"
       << "used earlier. This can happen if the two fixture classes are\n"
       << "from different namespaces and have the same name. You should\n"
       << "probably rename one of the classes to put the tests into different\n"
       << "test cases.";
   fprintf(stderr, "%s %s", FormatFileLocation(file, line).c_str(),
           errors.GetString().c_str());
 }
 #endif  // GTEST_HAS_PARAM_TEST
 }  // namespace internal
 namespace {
 // A predicate that checks the test name of a TestInfo against a known
 // value.
 //
 // This is used for implementation of the TestCase class only.  We put
 // it in the anonymous namespace to prevent polluting the outer
 // namespace.
 //
 // TestNameIs is copyable.
 class TestNameIs {
  public:
   // Constructor.
   //
   // TestNameIs has NO default constructor.
   explicit TestNameIs(const char* name)
       : name_(name) {}
   // Returns true iff the test name of test_info matches name_.
   bool operator()(const TestInfo * test_info) const {
     return test_info && internal::String(test_info->name()).Compare(name_) == 0;
   }
  private:
   internal::String name_;
 };
 }  // namespace
 namespace internal {
 // This method expands all parameterized tests registered with macros TEST_P
 // and INSTANTIATE_TEST_CASE_P into regular tests and registers those.
 // This will be done just once during the program runtime.
 void UnitTestImpl::RegisterParameterizedTests() {
 #if GTEST_HAS_PARAM_TEST
   if (!parameterized_tests_registered_) {
     parameterized_test_registry_.RegisterTests();
     parameterized_tests_registered_ = true;
   }
 #endif
 }
 }  // namespace internal
 // Creates the test object, runs it, records its result, and then
 // deletes it.
 void TestInfo::Run() {
   if (!should_run_) return;
   // Tells UnitTest where to store test result.
   internal::UnitTestImpl* const impl = internal::GetUnitTestImpl();
   impl->set_current_test_info(this);
   TestEventListener* repeater = UnitTest::GetInstance()->listeners().repeater();
   // Notifies the unit test event listeners that a test is about to start.
   repeater->OnTestStart(*this);
   const TimeInMillis start = internal::GetTimeInMillis();
   impl->os_stack_trace_getter()->UponLeavingGTest();
   // Creates the test object.
   Test* const test = internal::HandleExceptionsInMethodIfSupported(
       factory_, &internal::TestFactoryBase::CreateTest,
       "the test fixture's constructor");
   // Runs the test only if the test object was created and its
   // constructor didn't generate a fatal failure.
   if ((test != NULL) && !Test::HasFatalFailure()) {
     // This doesn't throw as all user code that can throw are wrapped into
     // exception handling code.
     test->Run();
   }
   // Deletes the test object.
   impl->os_stack_trace_getter()->UponLeavingGTest();
   internal::HandleExceptionsInMethodIfSupported(
       test, &Test::DeleteSelf_, "the test fixture's destructor");
   result_.set_elapsed_time(internal::GetTimeInMillis() - start);
   // Notifies the unit test event listener that a test has just finished.
   repeater->OnTestEnd(*this);
   // Tells UnitTest to stop associating assertion results to this
   // test.
   impl->set_current_test_info(NULL);
 }
 // class TestCase
 // Gets the number of successful tests in this test case.
 int TestCase::successful_test_count() const {
   return CountIf(test_info_list_, TestPassed);
 }
 // Gets the number of failed tests in this test case.
 int TestCase::failed_test_count() const {
   return CountIf(test_info_list_, TestFailed);
 }
 int TestCase::disabled_test_count() const {
   return CountIf(test_info_list_, TestDisabled);
 }
 // Get the number of tests in this test case that should run.
 int TestCase::test_to_run_count() const {
   return CountIf(test_info_list_, ShouldRunTest);
 }
 // Gets the number of all tests.
 int TestCase::total_test_count() const {
   return static_cast<int>(test_info_list_.size());
 }
 // Creates a TestCase with the given name.
 //
 // Arguments:
 //
 //   name:         name of the test case
 //   a_type_param: the name of the test case's type parameter, or NULL if
 //                 this is not a typed or a type-parameterized test case.
 //   set_up_tc:    pointer to the function that sets up the test case
 //   tear_down_tc: pointer to the function that tears down the test case
 TestCase::TestCase(const char* a_name, const char* a_type_param,
                    Test::SetUpTestCaseFunc set_up_tc,
                    Test::TearDownTestCaseFunc tear_down_tc)
     : name_(a_name),
       type_param_(a_type_param ? new std::string(a_type_param) : NULL),
       set_up_tc_(set_up_tc),
       tear_down_tc_(tear_down_tc),
       should_run_(false),
       elapsed_time_(0) {
 }
 // Destructor of TestCase.
 TestCase::~TestCase() {
   // Deletes every Test in the collection.
   ForEach(test_info_list_, internal::Delete<TestInfo>);
 }
 // 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* TestCase::GetTestInfo(int i) const {
   const int index = GetElementOr(test_indices_, i, -1);
   return index < 0 ? NULL : test_info_list_[index];
 }
 // 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* TestCase::GetMutableTestInfo(int i) {
   const int index = GetElementOr(test_indices_, i, -1);
   return index < 0 ? NULL : test_info_list_[index];
 }
 // Adds a test to this test case.  Will delete the test upon
 // destruction of the TestCase object.
 void TestCase::AddTestInfo(TestInfo * test_info) {
   test_info_list_.push_back(test_info);
   test_indices_.push_back(static_cast<int>(test_indices_.size()));
 }
 // Runs every test in this TestCase.
 void TestCase::Run() {
   if (!should_run_) return;
   internal::UnitTestImpl* const impl = internal::GetUnitTestImpl();
   impl->set_current_test_case(this);
   TestEventListener* repeater = UnitTest::GetInstance()->listeners().repeater();
   repeater->OnTestCaseStart(*this);
   impl->os_stack_trace_getter()->UponLeavingGTest();
   internal::HandleExceptionsInMethodIfSupported(
       this, &TestCase::RunSetUpTestCase, "SetUpTestCase()");
   const internal::TimeInMillis start = internal::GetTimeInMillis();
   for (int i = 0; i < total_test_count(); i++) {
     GetMutableTestInfo(i)->Run();
   }
   elapsed_time_ = internal::GetTimeInMillis() - start;
   impl->os_stack_trace_getter()->UponLeavingGTest();
   internal::HandleExceptionsInMethodIfSupported(
       this, &TestCase::RunTearDownTestCase, "TearDownTestCase()");
   repeater->OnTestCaseEnd(*this);
   impl->set_current_test_case(NULL);
 }
 // Clears the results of all tests in this test case.
 void TestCase::ClearResult() {
   ForEach(test_info_list_, TestInfo::ClearTestResult);
 }
 // Shuffles the tests in this test case.
 void TestCase::ShuffleTests(internal::Random* random) {
   Shuffle(random, &test_indices_);
 }
 // Restores the test order to before the first shuffle.
 void TestCase::UnshuffleTests() {
   for (size_t i = 0; i < test_indices_.size(); i++) {
     test_indices_[i] = static_cast<int>(i);
   }
 }
 // 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 internal::String FormatCountableNoun(int count,
                                             const char * singular_form,
                                             const char * plural_form) {
   return internal::String::Format("%d %s", count,
                                   count == 1 ? singular_form : plural_form);
 }
 // Formats the count of tests.
 static internal::String FormatTestCount(int test_count) {
   return FormatCountableNoun(test_count, "test", "tests");
 }
 // Formats the count of test cases.
 static internal::String FormatTestCaseCount(int test_case_count) {
   return FormatCountableNoun(test_case_count, "test case", "test cases");
 }
 // 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) {
   switch (type) {
     case TestPartResult::kSuccess:
       return "Success";
     case TestPartResult::kNonFatalFailure:
     case TestPartResult::kFatalFailure:
 #ifdef _MSC_VER
       return "error: ";
 #else
       return "Failure\n";
 #endif
     default:
       return "Unknown result type";
   }
 }
 // Prints a TestPartResult to a String.
 static internal::String PrintTestPartResultToString(
     const TestPartResult& test_part_result) {
   return (Message()
           << internal::FormatFileLocation(test_part_result.file_name(),
                                           test_part_result.line_number())
           << " " << TestPartResultTypeToString(test_part_result.type())
           << test_part_result.message()).GetString();
 }
 // Prints a TestPartResult.
 static void PrintTestPartResult(const TestPartResult& test_part_result) {
   const internal::String& result =
       PrintTestPartResultToString(test_part_result);
   printf("%s\n", result.c_str());
   fflush(stdout);
   // If the test program runs in Visual Studio or a debugger, the
   // following statements add the test part result message to the Output
   // window such that the user can double-click on it to jump to the
   // corresponding source code location; otherwise they do nothing.
 #if GTEST_OS_WINDOWS && !GTEST_OS_WINDOWS_MOBILE
   // We don't call OutputDebugString*() on Windows Mobile, as printing
   // to stdout is done by OutputDebugString() there already - we don't
   // want the same message printed twice.
   ::OutputDebugStringA(result.c_str());
   ::OutputDebugStringA("\n");
 #endif
 }
 // class PrettyUnitTestResultPrinter
 namespace internal {
 enum GTestColor {
   COLOR_DEFAULT,
   COLOR_RED,
   COLOR_GREEN,
   COLOR_YELLOW
 };
 #if GTEST_OS_WINDOWS && !GTEST_OS_WINDOWS_MOBILE
 // Returns the character attribute for the given color.
 WORD GetColorAttribute(GTestColor color) {
   switch (color) {
     case COLOR_RED:    return FOREGROUND_RED;
     case COLOR_GREEN:  return FOREGROUND_GREEN;
     case COLOR_YELLOW: return FOREGROUND_RED | FOREGROUND_GREEN;
     default:           return 0;
   }
 }
 #else
 // Returns the ANSI color code for the given color.  COLOR_DEFAULT is
 // an invalid input.
 const char* GetAnsiColorCode(GTestColor color) {
   switch (color) {
     case COLOR_RED:     return "1";
     case COLOR_GREEN:   return "2";
     case COLOR_YELLOW:  return "3";
     default:            return NULL;
   };
 }
 #endif  // GTEST_OS_WINDOWS && !GTEST_OS_WINDOWS_MOBILE
 // Returns true iff Google Test should use colors in the output.
 bool ShouldUseColor(bool stdout_is_tty) {
   const char* const gtest_color = GTEST_FLAG(color).c_str();
   if (String::CaseInsensitiveCStringEquals(gtest_color, "auto")) {
 #if GTEST_OS_WINDOWS
     // On Windows the TERM variable is usually not set, but the
     // console there does support colors.
     return stdout_is_tty;
 #else
     // On non-Windows platforms, we rely on the TERM variable.
     const char* const term = posix::GetEnv("TERM");
     const bool term_supports_color =
         String::CStringEquals(term, "xterm") ||
         String::CStringEquals(term, "xterm-color") ||
         String::CStringEquals(term, "xterm-256color") ||
         String::CStringEquals(term, "screen") ||
         String::CStringEquals(term, "linux") ||
         String::CStringEquals(term, "cygwin");
     return stdout_is_tty && term_supports_color;
 #endif  // GTEST_OS_WINDOWS
   }
   return String::CaseInsensitiveCStringEquals(gtest_color, "yes") ||
       String::CaseInsensitiveCStringEquals(gtest_color, "true") ||
       String::CaseInsensitiveCStringEquals(gtest_color, "t") ||
       String::CStringEquals(gtest_color, "1");
   // We take "yes", "true", "t", and "1" as meaning "yes".  If the
   // value is neither one of these nor "auto", we treat it as "no" to
   // be conservative.
 }
 // 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.
 void ColoredPrintf(GTestColor color, const char* fmt, ...) {
   va_list args;
   va_start(args, fmt);
 #if GTEST_OS_WINDOWS_MOBILE || GTEST_OS_SYMBIAN || GTEST_OS_ZOS || GTEST_OS_IOS
   const bool use_color = false;
 #else
   static const bool in_color_mode =
       ShouldUseColor(posix::IsATTY(posix::FileNo(stdout)) != 0);
   const bool use_color = in_color_mode && (color != COLOR_DEFAULT);
 #endif  // GTEST_OS_WINDOWS_MOBILE || GTEST_OS_SYMBIAN || GTEST_OS_ZOS
   // The '!= 0' comparison is necessary to satisfy MSVC 7.1.
   if (!use_color) {
     vprintf(fmt, args);
     va_end(args);
     return;
   }
 #if GTEST_OS_WINDOWS && !GTEST_OS_WINDOWS_MOBILE
   const HANDLE stdout_handle = GetStdHandle(STD_OUTPUT_HANDLE);
   // Gets the current text color.
   CONSOLE_SCREEN_BUFFER_INFO buffer_info;
   GetConsoleScreenBufferInfo(stdout_handle, &buffer_info);
   const WORD old_color_attrs = buffer_info.wAttributes;
   // We need to flush the stream buffers into the console before each
   // SetConsoleTextAttribute call lest it affect the text that is already
   // printed but has not yet reached the console.
   fflush(stdout);
   SetConsoleTextAttribute(stdout_handle,
                           GetColorAttribute(color) | FOREGROUND_INTENSITY);
   vprintf(fmt, args);
   fflush(stdout);
   // Restores the text color.
   SetConsoleTextAttribute(stdout_handle, old_color_attrs);
 #else
   printf("\033[0;3%sm", GetAnsiColorCode(color));
   vprintf(fmt, args);
   printf("\033[m");  // Resets the terminal to default.
 #endif  // GTEST_OS_WINDOWS && !GTEST_OS_WINDOWS_MOBILE
   va_end(args);
 }
 void PrintFullTestCommentIfPresent(const TestInfo& test_info) {
   const char* const type_param = test_info.type_param();
   const char* const value_param = test_info.value_param();
   if (type_param != NULL || value_param != NULL) {
     printf(", where ");
     if (type_param != NULL) {
       printf("TypeParam = %s", type_param);
       if (value_param != NULL)
         printf(" and ");
     }
     if (value_param != NULL) {
       printf("GetParam() = %s", value_param);
     }
   }
 }
 // This class implements the TestEventListener interface.
 //
 // Class PrettyUnitTestResultPrinter is copyable.
 class PrettyUnitTestResultPrinter : public TestEventListener {
  public:
   PrettyUnitTestResultPrinter() {}
   static void PrintTestName(const char * test_case, const char * test) {
     printf("%s.%s", test_case, test);
   }
   // The following methods override what's in the TestEventListener class.
   virtual void OnTestProgramStart(const UnitTest& /*unit_test*/) {}
   virtual void OnTestIterationStart(const UnitTest& unit_test, int iteration);
   virtual void OnEnvironmentsSetUpStart(const UnitTest& unit_test);
   virtual void OnEnvironmentsSetUpEnd(const UnitTest& /*unit_test*/) {}
   virtual void OnTestCaseStart(const TestCase& test_case);
   virtual void OnTestStart(const TestInfo& test_info);
   virtual void OnTestPartResult(const TestPartResult& result);
   virtual void OnTestEnd(const TestInfo& test_info);
   virtual void OnTestCaseEnd(const TestCase& test_case);
   virtual void OnEnvironmentsTearDownStart(const UnitTest& unit_test);
   virtual void OnEnvironmentsTearDownEnd(const UnitTest& /*unit_test*/) {}
   virtual void OnTestIterationEnd(const UnitTest& unit_test, int iteration);
   virtual void OnTestProgramEnd(const UnitTest& /*unit_test*/) {}
  private:
   static void PrintFailedTests(const UnitTest& unit_test);
 };
   // Fired before each iteration of tests starts.
 void PrettyUnitTestResultPrinter::OnTestIterationStart(
     const UnitTest& unit_test, int iteration) {
   if (GTEST_FLAG(repeat) != 1)
     printf("\nRepeating all tests (iteration %d) . . .\n\n", iteration + 1);
   const char* const filter = GTEST_FLAG(filter).c_str();
   // Prints the filter if it's not *.  This reminds the user that some
   // tests may be skipped.
   if (!internal::String::CStringEquals(filter, kUniversalFilter)) {
     ColoredPrintf(COLOR_YELLOW,
                   "Note: %s filter = %s\n", GTEST_NAME_, filter);
   }
   if (internal::ShouldShard(kTestTotalShards, kTestShardIndex, false)) {
     const Int32 shard_index = Int32FromEnvOrDie(kTestShardIndex, -1);
     ColoredPrintf(COLOR_YELLOW,
                   "Note: This is test shard %d of %s.\n",
                   static_cast<int>(shard_index) + 1,
                   internal::posix::GetEnv(kTestTotalShards));
   }
   if (GTEST_FLAG(shuffle)) {
     ColoredPrintf(COLOR_YELLOW,
                   "Note: Randomizing tests' orders with a seed of %d .\n",
                   unit_test.random_seed());
   }
   ColoredPrintf(COLOR_GREEN,  "[==========] ");
   printf("Running %s from %s.\n",
          FormatTestCount(unit_test.test_to_run_count()).c_str(),
          FormatTestCaseCount(unit_test.test_case_to_run_count()).c_str());
   fflush(stdout);
 }
 void PrettyUnitTestResultPrinter::OnEnvironmentsSetUpStart(
     const UnitTest& /*unit_test*/) {
   ColoredPrintf(COLOR_GREEN,  "[----------] ");
   printf("Global test environment set-up.\n");
   fflush(stdout);
 }
 void PrettyUnitTestResultPrinter::OnTestCaseStart(const TestCase& test_case) {
   const internal::String counts =
       FormatCountableNoun(test_case.test_to_run_count(), "test", "tests");
   ColoredPrintf(COLOR_GREEN, "[----------] ");
   printf("%s from %s", counts.c_str(), test_case.name());
   if (test_case.type_param() == NULL) {
     printf("\n");
   } else {
     printf(", where TypeParam = %s\n", test_case.type_param());
   }
   fflush(stdout);
 }
 void PrettyUnitTestResultPrinter::OnTestStart(const TestInfo& test_info) {
   ColoredPrintf(COLOR_GREEN,  "[ RUN      ] ");
   PrintTestName(test_info.test_case_name(), test_info.name());
   printf("\n");
   fflush(stdout);
 }
 // Called after an assertion failure.
 void PrettyUnitTestResultPrinter::OnTestPartResult(
     const TestPartResult& result) {
   // If the test part succeeded, we don't need to do anything.
   if (result.type() == TestPartResult::kSuccess)
     return;
   // Print failure message from the assertion (e.g. expected this and got that).
   PrintTestPartResult(result);
   fflush(stdout);
 }
 void PrettyUnitTestResultPrinter::OnTestEnd(const TestInfo& test_info) {
   if (test_info.result()->Passed()) {
     ColoredPrintf(COLOR_GREEN, "[       OK ] ");
   } else {
     ColoredPrintf(COLOR_RED, "[  FAILED  ] ");
   }
   PrintTestName(test_info.test_case_name(), test_info.name());
   if (test_info.result()->Failed())
     PrintFullTestCommentIfPresent(test_info);
   if (GTEST_FLAG(print_time)) {
     printf(" (%s ms)\n", internal::StreamableToString(
            test_info.result()->elapsed_time()).c_str());
   } else {
     printf("\n");
   }
   fflush(stdout);
 }
 void PrettyUnitTestResultPrinter::OnTestCaseEnd(const TestCase& test_case) {
   if (!GTEST_FLAG(print_time)) return;
   const internal::String counts =
       FormatCountableNoun(test_case.test_to_run_count(), "test", "tests");
   ColoredPrintf(COLOR_GREEN, "[----------] ");
   printf("%s from %s (%s ms total)\n\n",
          counts.c_str(), test_case.name(),
          internal::StreamableToString(test_case.elapsed_time()).c_str());
   fflush(stdout);
 }
 void PrettyUnitTestResultPrinter::OnEnvironmentsTearDownStart(
     const UnitTest& /*unit_test*/) {
   ColoredPrintf(COLOR_GREEN,  "[----------] ");
   printf("Global test environment tear-down\n");
   fflush(stdout);
 }
 // Internal helper for printing the list of failed tests.
 void PrettyUnitTestResultPrinter::PrintFailedTests(const UnitTest& unit_test) {
   const int failed_test_count = unit_test.failed_test_count();
   if (failed_test_count == 0) {
     return;
   }
   for (int i = 0; i < unit_test.total_test_case_count(); ++i) {
     const TestCase& test_case = *unit_test.GetTestCase(i);
     if (!test_case.should_run() || (test_case.failed_test_count() == 0)) {
       continue;
     }
     for (int j = 0; j < test_case.total_test_count(); ++j) {
       const TestInfo& test_info = *test_case.GetTestInfo(j);
       if (!test_info.should_run() || test_info.result()->Passed()) {
         continue;
       }
       ColoredPrintf(COLOR_RED, "[  FAILED  ] ");
       printf("%s.%s", test_case.name(), test_info.name());
       PrintFullTestCommentIfPresent(test_info);
       printf("\n");
     }
   }
 }
 void PrettyUnitTestResultPrinter::OnTestIterationEnd(const UnitTest& unit_test,
                                                      int /*iteration*/) {
   ColoredPrintf(COLOR_GREEN,  "[==========] ");
   printf("%s from %s ran.",
          FormatTestCount(unit_test.test_to_run_count()).c_str(),
          FormatTestCaseCount(unit_test.test_case_to_run_count()).c_str());
   if (GTEST_FLAG(print_time)) {
     printf(" (%s ms total)",
            internal::StreamableToString(unit_test.elapsed_time()).c_str());
   }
   printf("\n");
   ColoredPrintf(COLOR_GREEN,  "[  PASSED  ] ");
   printf("%s.\n", FormatTestCount(unit_test.successful_test_count()).c_str());
   int num_failures = unit_test.failed_test_count();
   if (!unit_test.Passed()) {
     const int failed_test_count = unit_test.failed_test_count();
     ColoredPrintf(COLOR_RED,  "[  FAILED  ] ");
     printf("%s, listed below:\n", FormatTestCount(failed_test_count).c_str());
     PrintFailedTests(unit_test);
     printf("\n%2d FAILED %s\n", num_failures,
                         num_failures == 1 ? "TEST" : "TESTS");
   }
   int num_disabled = unit_test.disabled_test_count();
   if (num_disabled && !GTEST_FLAG(also_run_disabled_tests)) {
     if (!num_failures) {
       printf("\n");  // Add a spacer if no FAILURE banner is displayed.
     }
     ColoredPrintf(COLOR_YELLOW,
                   "  YOU HAVE %d DISABLED %s\n\n",
                   num_disabled,
                   num_disabled == 1 ? "TEST" : "TESTS");
   }
   // Ensure that Google Test output is printed before, e.g., heapchecker output.
   fflush(stdout);
 }
 // End PrettyUnitTestResultPrinter
 // class TestEventRepeater
 //
 // This class forwards events to other event listeners.
 class TestEventRepeater : public TestEventListener {
  public:
   TestEventRepeater() : forwarding_enabled_(true) {}
   virtual ~TestEventRepeater();
   void Append(TestEventListener *listener);
   TestEventListener* Release(TestEventListener* listener);
   // Controls whether events will be forwarded to listeners_. Set to false
   // in death test child processes.
   bool forwarding_enabled() const { return forwarding_enabled_; }
   void set_forwarding_enabled(bool enable) { forwarding_enabled_ = enable; }
   virtual void OnTestProgramStart(const UnitTest& unit_test);
   virtual void OnTestIterationStart(const UnitTest& unit_test, int iteration);
   virtual void OnEnvironmentsSetUpStart(const UnitTest& unit_test);
   virtual void OnEnvironmentsSetUpEnd(const UnitTest& unit_test);
   virtual void OnTestCaseStart(const TestCase& test_case);
   virtual void OnTestStart(const TestInfo& test_info);
   virtual void OnTestPartResult(const TestPartResult& result);
   virtual void OnTestEnd(const TestInfo& test_info);
   virtual void OnTestCaseEnd(const TestCase& test_case);
   virtual void OnEnvironmentsTearDownStart(const UnitTest& unit_test);
   virtual void OnEnvironmentsTearDownEnd(const UnitTest& unit_test);
   virtual void OnTestIterationEnd(const UnitTest& unit_test, int iteration);
   virtual void OnTestProgramEnd(const UnitTest& unit_test);
  private:
   // Controls whether events will be forwarded to listeners_. Set to false
   // in death test child processes.
   bool forwarding_enabled_;
   // The list of listeners that receive events.
   std::vector<TestEventListener*> listeners_;
   GTEST_DISALLOW_COPY_AND_ASSIGN_(TestEventRepeater);
 };
 TestEventRepeater::~TestEventRepeater() {
   ForEach(listeners_, Delete<TestEventListener>);
 }
 void TestEventRepeater::Append(TestEventListener *listener) {
   listeners_.push_back(listener);
 }
 // TODO(vladl@google.com): Factor the search functionality into Vector::Find.
 TestEventListener* TestEventRepeater::Release(TestEventListener *listener) {
   for (size_t i = 0; i < listeners_.size(); ++i) {
     if (listeners_[i] == listener) {
       listeners_.erase(listeners_.begin() + i);
       return listener;
     }
   }
   return NULL;
 }
 // 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_(Name, Type) \
 void TestEventRepeater::Name(const Type& parameter) { \
   if (forwarding_enabled_) { \
     for (size_t i = 0; i < listeners_.size(); i++) { \
       listeners_[i]->Name(parameter); \
     } \
   } \
 }
 // This defines a member that forwards the call to all listeners in reverse
 // order.
 #define GTEST_REVERSE_REPEATER_METHOD_(Name, Type) \
 void TestEventRepeater::Name(const Type& parameter) { \
   if (forwarding_enabled_) { \
     for (int i = static_cast<int>(listeners_.size()) - 1; i >= 0; i--) { \
       listeners_[i]->Name(parameter); \
     } \
   } \
 }
 GTEST_REPEATER_METHOD_(OnTestProgramStart, UnitTest)
 GTEST_REPEATER_METHOD_(OnEnvironmentsSetUpStart, UnitTest)
 GTEST_REPEATER_METHOD_(OnTestCaseStart, TestCase)
 GTEST_REPEATER_METHOD_(OnTestStart, TestInfo)
 GTEST_REPEATER_METHOD_(OnTestPartResult, TestPartResult)
 GTEST_REPEATER_METHOD_(OnEnvironmentsTearDownStart, UnitTest)
 GTEST_REVERSE_REPEATER_METHOD_(OnEnvironmentsSetUpEnd, UnitTest)
 GTEST_REVERSE_REPEATER_METHOD_(OnEnvironmentsTearDownEnd, UnitTest)
 GTEST_REVERSE_REPEATER_METHOD_(OnTestEnd, TestInfo)
 GTEST_REVERSE_REPEATER_METHOD_(OnTestCaseEnd, TestCase)
 GTEST_REVERSE_REPEATER_METHOD_(OnTestProgramEnd, UnitTest)
 #undef GTEST_REPEATER_METHOD_
 #undef GTEST_REVERSE_REPEATER_METHOD_
 void TestEventRepeater::OnTestIterationStart(const UnitTest& unit_test,
                                              int iteration) {
   if (forwarding_enabled_) {
     for (size_t i = 0; i < listeners_.size(); i++) {
       listeners_[i]->OnTestIterationStart(unit_test, iteration);
     }
   }
 }
 void TestEventRepeater::OnTestIterationEnd(const UnitTest& unit_test,
                                            int iteration) {
   if (forwarding_enabled_) {
     for (int i = static_cast<int>(listeners_.size()) - 1; i >= 0; i--) {
       listeners_[i]->OnTestIterationEnd(unit_test, iteration);
     }
   }
 }
 // End TestEventRepeater
 // This class generates an XML output file.
 class XmlUnitTestResultPrinter : public EmptyTestEventListener {
  public:
   explicit XmlUnitTestResultPrinter(const char* output_file);
   virtual void OnTestIterationEnd(const UnitTest& unit_test, int iteration);
  private:
   // Is c a whitespace character that is normalized to a space character
   // when it appears in an XML attribute value?
   static bool IsNormalizableWhitespace(char c) {
     return c == 0x9 || c == 0xA || c == 0xD;
   }
   // May c appear in a well-formed XML document?
   static bool IsValidXmlCharacter(char c) {
     return IsNormalizableWhitespace(c) || c >= 0x20;
   }
   // 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.
   static String EscapeXml(const char* str, bool is_attribute);
   // Returns the given string with all characters invalid in XML removed.
   static string RemoveInvalidXmlCharacters(const string& str);
   // Convenience wrapper around EscapeXml when str is an attribute value.
   static String EscapeXmlAttribute(const char* str) {
     return EscapeXml(str, true);
   }
   // Convenience wrapper around EscapeXml when str is not an attribute value.
   static String EscapeXmlText(const char* str) { return EscapeXml(str, false); }
   // Streams an XML CDATA section, escaping invalid CDATA sequences as needed.
   static void OutputXmlCDataSection(::std::ostream* stream, const char* data);
   // Streams an XML representation of a TestInfo object.
   static void OutputXmlTestInfo(::std::ostream* stream,
                                 const char* test_case_name,
                                 const TestInfo& test_info);
   // Prints an XML representation of a TestCase object
   static void PrintXmlTestCase(FILE* out, const TestCase& test_case);
   // Prints an XML summary of unit_test to output stream out.
   static void PrintXmlUnitTest(FILE* out, const UnitTest& unit_test);
   // Produces a string representing the test properties in a result as space
   // delimited XML attributes based on the property key="value" pairs.
   // When the String is not empty, it includes a space at the beginning,
   // to delimit this attribute from prior attributes.
   static String TestPropertiesAsXmlAttributes(const TestResult& result);
   // The output file.
   const String output_file_;
   GTEST_DISALLOW_COPY_AND_ASSIGN_(XmlUnitTestResultPrinter);
 };
 // Creates a new XmlUnitTestResultPrinter.
 XmlUnitTestResultPrinter::XmlUnitTestResultPrinter(const char* output_file)
     : output_file_(output_file) {
   if (output_file_.c_str() == NULL || output_file_.empty()) {
     fprintf(stderr, "XML output file may not be null\n");
     fflush(stderr);
     exit(EXIT_FAILURE);
   }
 }
 // Called after the unit test ends.
 void XmlUnitTestResultPrinter::OnTestIterationEnd(const UnitTest& unit_test,
                                                   int /*iteration*/) {
   FILE* xmlout = NULL;
   FilePath output_file(output_file_);
   FilePath output_dir(output_file.RemoveFileName());
   if (output_dir.CreateDirectoriesRecursively()) {
     xmlout = posix::FOpen(output_file_.c_str(), "w");
   }
   if (xmlout == NULL) {
     // TODO(wan): report the reason of the failure.
     //
     // We don't do it for now as:
     //
     //   1. There is no urgent need for it.
     //   2. It's a bit involved to make the errno variable thread-safe on
     //      all three operating systems (Linux, Windows, and Mac OS).
     //   3. To interpret the meaning of errno in a thread-safe way,
     //      we need the strerror_r() function, which is not available on
     //      Windows.
     fprintf(stderr,
             "Unable to open file \"%s\"\n",
             output_file_.c_str());
     fflush(stderr);
     exit(EXIT_FAILURE);
   }
   PrintXmlUnitTest(xmlout, unit_test);
   fclose(xmlout);
 }
 // 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.
 // TODO(wan): It might be nice to have a minimally invasive, human-readable
 // escaping scheme for invalid characters, rather than dropping them.
 String XmlUnitTestResultPrinter::EscapeXml(const char* str, bool is_attribute) {
   Message m;
   if (str != NULL) {
     for (const char* src = str; *src; ++src) {
       switch (*src) {
         case '<':
           m << "&lt;";
           break;
         case '>':
           m << "&gt;";
           break;
         case '&':
           m << "&amp;";
           break;
         case '\'':
           if (is_attribute)
             m << "&apos;";
           else
             m << '\'';
           break;
         case '"':
           if (is_attribute)
             m << "&quot;";
           else
             m << '"';
           break;
         default:
           if (IsValidXmlCharacter(*src)) {
             if (is_attribute && IsNormalizableWhitespace(*src))
               m << String::Format("&#x%02X;", unsigned(*src));
             else
               m << *src;
           }
           break;
       }
     }
   }
   return m.GetString();
 }
 // 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 ?.
 string XmlUnitTestResultPrinter::RemoveInvalidXmlCharacters(const string& str) {
   string output;
   output.reserve(str.size());
   for (string::const_iterator it = str.begin(); it != str.end(); ++it)
     if (IsValidXmlCharacter(*it))
       output.push_back(*it);
   return output;
 }
 // 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 TestCase 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) {
   ::std::stringstream ss;
   ss << ms/1000.0;
   return ss.str();
 }
 // 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) {
   // Using non-reentrant version as localtime_r is not portable.
   time_t seconds = static_cast<time_t>(ms / 1000);
 #ifdef _MSC_VER
 # pragma warning(push)          // Saves the current warning state.
 # pragma warning(disable:4996)  // Temporarily disables warning 4996
                                 // (function or variable may be unsafe).
   const struct tm* const time_struct = localtime(&seconds);  // NOLINT
 # pragma warning(pop)           // Restores the warning state again.
 #else
   const struct tm* const time_struct = localtime(&seconds);  // NOLINT
 #endif
   if (time_struct == NULL)
     return "";  // Invalid ms value
   return String::Format("%d-%02d-%02dT%02d:%02d:%02d",  // YYYY-MM-DDThh:mm:ss
                         time_struct->tm_year + 1900,
                         time_struct->tm_mon + 1,
                         time_struct->tm_mday,
                         time_struct->tm_hour,
                         time_struct->tm_min,
                         time_struct->tm_sec);
 }
 // Streams an XML CDATA section, escaping invalid CDATA sequences as needed.
 void XmlUnitTestResultPrinter::OutputXmlCDataSection(::std::ostream* stream,
                                                      const char* data) {
   const char* segment = data;
   *stream << "<![CDATA[";
   for (;;) {
     const char* const next_segment = strstr(segment, "]]>");
     if (next_segment != NULL) {
       stream->write(
           segment, static_cast<std::streamsize>(next_segment - segment));
       *stream << "]]>]]&gt;<![CDATA[";
       segment = next_segment + strlen("]]>");
     } else {
       *stream << segment;
       break;
     }
   }
   *stream << "]]>";
 }
 // Prints an XML representation of a TestInfo object.
 // TODO(wan): There is also value in printing properties with the plain printer.
 void XmlUnitTestResultPrinter::OutputXmlTestInfo(::std::ostream* stream,
                                                  const char* test_case_name,
                                                  const TestInfo& test_info) {
   const TestResult& result = *test_info.result();
   *stream << "    <testcase name=\""
           << EscapeXmlAttribute(test_info.name()).c_str() << "\"";
   if (test_info.value_param() != NULL) {
     *stream << " value_param=\"" << EscapeXmlAttribute(test_info.value_param())
             << "\"";
   }
   if (test_info.type_param() != NULL) {
     *stream << " type_param=\"" << EscapeXmlAttribute(test_info.type_param())
             << "\"";
   }
   *stream << " status=\""
           << (test_info.should_run() ? "run" : "notrun")
           << "\" time=\""
           << FormatTimeInMillisAsSeconds(result.elapsed_time())
           << "\" classname=\"" << EscapeXmlAttribute(test_case_name).c_str()
           << "\"" << TestPropertiesAsXmlAttributes(result).c_str();
   int failures = 0;
   for (int i = 0; i < result.total_part_count(); ++i) {
     const TestPartResult& part = result.GetTestPartResult(i);
     if (part.failed()) {
       if (++failures == 1) {
         *stream << ">\n";
       }
       const string location = internal::FormatCompilerIndependentFileLocation(
           part.file_name(), part.line_number());
       const string summary = location + "\n" + part.summary();
       *stream << "      <failure message=\""
               << EscapeXmlAttribute(summary.c_str())
               << "\" type=\"\">";
       const string detail = location + "\n" + part.message();
       OutputXmlCDataSection(stream, RemoveInvalidXmlCharacters(detail).c_str());
       *stream << "</failure>\n";
     }
   }
   if (failures == 0)
     *stream << " />\n";
   else
     *stream << "    </testcase>\n";
 }
 // Prints an XML representation of a TestCase object
 void XmlUnitTestResultPrinter::PrintXmlTestCase(FILE* out,
                                                 const TestCase& test_case) {
   fprintf(out,
           "  <testsuite name=\"%s\" tests=\"%d\" failures=\"%d\" "
           "disabled=\"%d\" ",
           EscapeXmlAttribute(test_case.name()).c_str(),
           test_case.total_test_count(),
           test_case.failed_test_count(),
           test_case.disabled_test_count());
   fprintf(out,
           "errors=\"0\" time=\"%s\">\n",
           FormatTimeInMillisAsSeconds(test_case.elapsed_time()).c_str());
   for (int i = 0; i < test_case.total_test_count(); ++i) {
     ::std::stringstream stream;
     OutputXmlTestInfo(&stream, test_case.name(), *test_case.GetTestInfo(i));
     fprintf(out, "%s", StringStreamToString(&stream).c_str());
   }
   fprintf(out, "  </testsuite>\n");
 }
 // Prints an XML summary of unit_test to output stream out.
 void XmlUnitTestResultPrinter::PrintXmlUnitTest(FILE* out,
                                                 const UnitTest& unit_test) {
   fprintf(out, "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n");
   fprintf(out,
           "<testsuites tests=\"%d\" failures=\"%d\" disabled=\"%d\" "
           "errors=\"0\" timestamp=\"%s\" time=\"%s\" ",
           unit_test.total_test_count(),
           unit_test.failed_test_count(),
           unit_test.disabled_test_count(),
           FormatEpochTimeInMillisAsIso8601(unit_test.start_timestamp()).c_str(),
           FormatTimeInMillisAsSeconds(unit_test.elapsed_time()).c_str());
   if (GTEST_FLAG(shuffle)) {
     fprintf(out, "random_seed=\"%d\" ", unit_test.random_seed());
   }
   fprintf(out, "name=\"AllTests\">\n");
   for (int i = 0; i < unit_test.total_test_case_count(); ++i)
     PrintXmlTestCase(out, *unit_test.GetTestCase(i));
   fprintf(out, "</testsuites>\n");
 }
 // Produces a string representing the test properties in a result as space
 // delimited XML attributes based on the property key="value" pairs.
 String XmlUnitTestResultPrinter::TestPropertiesAsXmlAttributes(
     const TestResult& result) {
   Message attributes;
   for (int i = 0; i < result.test_property_count(); ++i) {
     const TestProperty& property = result.GetTestProperty(i);
     attributes << " " << property.key() << "="
         << "\"" << EscapeXmlAttribute(property.value()) << "\"";
   }
   return attributes.GetString();
 }
 // End XmlUnitTestResultPrinter
 #if GTEST_CAN_STREAM_RESULTS_
 // Streams test results to the given port on the given host machine.
 class StreamingListener : public EmptyTestEventListener {
  public:
   // Escapes '=', '&', '%', and '\n' characters in str as "%xx".
   static string UrlEncode(const char* str);
   StreamingListener(const string& host, const string& port)
       : sockfd_(-1), host_name_(host), port_num_(port) {
     MakeConnection();
     Send("gtest_streaming_protocol_version=1.0\n");
   }
   virtual ~StreamingListener() {
     if (sockfd_ != -1)
       CloseConnection();
   }
   void OnTestProgramStart(const UnitTest& /* unit_test */) {
     Send("event=TestProgramStart\n");
   }
   void OnTestProgramEnd(const UnitTest& unit_test) {
     // Note that Google Test current only report elapsed time for each
     // test iteration, not for the entire test program.
     Send(String::Format("event=TestProgramEnd&passed=%d\n",
                         unit_test.Passed()));
     // Notify the streaming server to stop.
     CloseConnection();
   }
   void OnTestIterationStart(const UnitTest& /* unit_test */, int iteration) {
     Send(String::Format("event=TestIterationStart&iteration=%d\n",
                         iteration));
   }
   void OnTestIterationEnd(const UnitTest& unit_test, int /* iteration */) {
     Send(String::Format("event=TestIterationEnd&passed=%d&elapsed_time=%sms\n",
                         unit_test.Passed(),
                         StreamableToString(unit_test.elapsed_time()).c_str()));
   }
   void OnTestCaseStart(const TestCase& test_case) {
     Send(String::Format("event=TestCaseStart&name=%s\n", test_case.name()));
   }
   void OnTestCaseEnd(const TestCase& test_case) {
     Send(String::Format("event=TestCaseEnd&passed=%d&elapsed_time=%sms\n",
                         test_case.Passed(),
                         StreamableToString(test_case.elapsed_time()).c_str()));
   }
   void OnTestStart(const TestInfo& test_info) {
     Send(String::Format("event=TestStart&name=%s\n", test_info.name()));
   }
   void OnTestEnd(const TestInfo& test_info) {
     Send(String::Format(
         "event=TestEnd&passed=%d&elapsed_time=%sms\n",
         (test_info.result())->Passed(),
         StreamableToString((test_info.result())->elapsed_time()).c_str()));
   }
   void OnTestPartResult(const TestPartResult& test_part_result) {
     const char* file_name = test_part_result.file_name();
     if (file_name == NULL)
       file_name = "";
     Send(String::Format("event=TestPartResult&file=%s&line=%d&message=",
                         UrlEncode(file_name).c_str(),
                         test_part_result.line_number()));
     Send(UrlEncode(test_part_result.message()) + "\n");
   }
  private:
   // Creates a client socket and connects to the server.
   void MakeConnection();
   // Closes the socket.
   void CloseConnection() {
     GTEST_CHECK_(sockfd_ != -1)
         << "CloseConnection() can be called only when there is a connection.";
     close(sockfd_);
     sockfd_ = -1;
   }
   // Sends a string to the socket.
   void Send(const string& message) {
     GTEST_CHECK_(sockfd_ != -1)
         << "Send() can be called only when there is a connection.";
     const int len = static_cast<int>(message.length());
     if (write(sockfd_, message.c_str(), len) != len) {
       GTEST_LOG_(WARNING)
           << "stream_result_to: failed to stream to "
           << host_name_ << ":" << port_num_;
     }
   }
   int sockfd_;   // socket file descriptor
   const string host_name_;
   const string port_num_;
   GTEST_DISALLOW_COPY_AND_ASSIGN_(StreamingListener);
 };  // class StreamingListener
 // 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.
 string StreamingListener::UrlEncode(const char* str) {
   string result;
   result.reserve(strlen(str) + 1);
   for (char ch = *str; ch != '\0'; ch = *++str) {
     switch (ch) {
       case '%':
       case '=':
       case '&':
       case '\n':
         result.append(String::Format("%%%02x", static_cast<unsigned char>(ch)));
         break;
       default:
         result.push_back(ch);
         break;
     }
   }
   return result;
 }
 void StreamingListener::MakeConnection() {
   GTEST_CHECK_(sockfd_ == -1)
       << "MakeConnection() can't be called when there is already a connection.";
   addrinfo hints;
   memset(&hints, 0, sizeof(hints));
   hints.ai_family = AF_UNSPEC;    // To allow both IPv4 and IPv6 addresses.
   hints.ai_socktype = SOCK_STREAM;
   addrinfo* servinfo = NULL;
   // Use the getaddrinfo() to get a linked list of IP addresses for
   // the given host name.
   const int error_num = getaddrinfo(
       host_name_.c_str(), port_num_.c_str(), &hints, &servinfo);
   if (error_num != 0) {
     GTEST_LOG_(WARNING) << "stream_result_to: getaddrinfo() failed: "
                         << gai_strerror(error_num);
   }
   // Loop through all the results and connect to the first we can.
   for (addrinfo* cur_addr = servinfo; sockfd_ == -1 && cur_addr != NULL;
        cur_addr = cur_addr->ai_next) {
     sockfd_ = socket(
         cur_addr->ai_family, cur_addr->ai_socktype, cur_addr->ai_protocol);
     if (sockfd_ != -1) {
       // Connect the client socket to the server socket.
       if (connect(sockfd_, cur_addr->ai_addr, cur_addr->ai_addrlen) == -1) {
         close(sockfd_);
         sockfd_ = -1;
       }
     }
   }
   freeaddrinfo(servinfo);  // all done with this structure
   if (sockfd_ == -1) {
     GTEST_LOG_(WARNING) << "stream_result_to: failed to connect to "
                         << host_name_ << ":" << port_num_;
   }
 }
 // End of class Streaming Listener
 #endif  // GTEST_CAN_STREAM_RESULTS__
 // Class ScopedTrace
 // Pushes the given source file location and message onto a per-thread
 // trace stack maintained by Google Test.
 ScopedTrace::ScopedTrace(const char* file, int line, const Message& message)
     GTEST_LOCK_EXCLUDED_(&UnitTest::mutex_) {
   TraceInfo trace;
   trace.file = file;
   trace.line = line;
   trace.message = message.GetString();
   UnitTest::GetInstance()->PushGTestTrace(trace);
 }
 // Pops the info pushed by the c'tor.
 ScopedTrace::~ScopedTrace()
     GTEST_LOCK_EXCLUDED_(&UnitTest::mutex_) {
   UnitTest::GetInstance()->PopGTestTrace();
 }
 // class OsStackTraceGetter
 // Returns the current OS stack trace as a String.  Parameters:
 //
 //   max_depth  - the maximum number of stack frames to be included
 //                in the trace.
 //   skip_count - the number of top frames to be skipped; doesn't count
 //                against max_depth.
 //
 String OsStackTraceGetter::CurrentStackTrace(int /* max_depth */,
                                              int /* skip_count */)
     GTEST_LOCK_EXCLUDED_(mutex_) {
   return String("");
 }
 void OsStackTraceGetter::UponLeavingGTest()
     GTEST_LOCK_EXCLUDED_(mutex_) {
 }
 const char* const
 OsStackTraceGetter::kElidedFramesMarker =
     "... " GTEST_NAME_ " internal frames ...";
 }  // namespace internal
 // class TestEventListeners
 TestEventListeners::TestEventListeners()
     : repeater_(new internal::TestEventRepeater()),
       default_result_printer_(NULL),
       default_xml_generator_(NULL) {
 }
 TestEventListeners::~TestEventListeners() { delete repeater_; }
 // 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) {
   repeater_->Append(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) {
   if (listener == default_result_printer_)
     default_result_printer_ = NULL;
   else if (listener == default_xml_generator_)
     default_xml_generator_ = NULL;
   return repeater_->Release(listener);
 }
 // Returns repeater that broadcasts the TestEventListener events to all
 // subscribers.
 TestEventListener* TestEventListeners::repeater() { return 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) {
   if (default_result_printer_ != listener) {
     // It is an error to pass this method a listener that is already in the
     // list.
     delete Release(default_result_printer_);
     default_result_printer_ = listener;
     if (listener != NULL)
       Append(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) {
   if (default_xml_generator_ != listener) {
     // It is an error to pass this method a listener that is already in the
     // list.
     delete Release(default_xml_generator_);
     default_xml_generator_ = listener;
     if (listener != NULL)
       Append(listener);
   }
 }
 // Controls whether events will be forwarded by the repeater to the
 // listeners in the list.
 bool TestEventListeners::EventForwardingEnabled() const {
   return repeater_->forwarding_enabled();
 }
 void TestEventListeners::SuppressEventForwarding() {
   repeater_->set_forwarding_enabled(false);
 }
 // 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() {
   // When compiled with MSVC 7.1 in optimized mode, destroying the
   // UnitTest object upon exiting the program messes up the exit code,
   // causing successful tests to appear failed.  We have to use a
   // different implementation in this case to bypass the compiler bug.
   // This implementation makes the compiler happy, at the cost of
   // leaking the UnitTest object.
   // CodeGear C++Builder insists on a public destructor for the
   // default implementation.  Use this implementation to keep good OO
   // design with private destructor.
 #if (_MSC_VER == 1310 && !defined(_DEBUG)) || defined(__BORLANDC__)
   static UnitTest* const instance = new UnitTest;
   return instance;
 #else
   static UnitTest instance;
   return &instance;
 #endif  // (_MSC_VER == 1310 && !defined(_DEBUG)) || defined(__BORLANDC__)
 }
 // Gets the number of successful test cases.
 int UnitTest::successful_test_case_count() const {
   return impl()->successful_test_case_count();
 }
 // Gets the number of failed test cases.
 int UnitTest::failed_test_case_count() const {
   return impl()->failed_test_case_count();
 }
 // Gets the number of all test cases.
 int UnitTest::total_test_case_count() const {
   return impl()->total_test_case_count();
 }
 // Gets the number of all test cases that contain at least one test
 // that should run.
 int UnitTest::test_case_to_run_count() const {
   return impl()->test_case_to_run_count();
 }
 // Gets the number of successful tests.
 int UnitTest::successful_test_count() const {
   return impl()->successful_test_count();
 }
 // Gets the number of failed tests.
 int UnitTest::failed_test_count() const { return impl()->failed_test_count(); }
 // Gets the number of disabled tests.
 int UnitTest::disabled_test_count() const {
   return impl()->disabled_test_count();
 }
 // Gets the number of all tests.
 int UnitTest::total_test_count() const { return impl()->total_test_count(); }
 // Gets the number of tests that should run.
 int UnitTest::test_to_run_count() const { return impl()->test_to_run_count(); }
 // Gets the time of the test program start, in ms from the start of the
 // UNIX epoch.
 internal::TimeInMillis UnitTest::start_timestamp() const {
     return impl()->start_timestamp();
 }
 // Gets the elapsed time, in milliseconds.
 internal::TimeInMillis UnitTest::elapsed_time() const {
   return impl()->elapsed_time();
 }
 // Returns true iff the unit test passed (i.e. all test cases passed).
 bool UnitTest::Passed() const { return impl()->Passed(); }
 // Returns true iff the unit test failed (i.e. some test case failed
 // or something outside of all tests failed).
 bool UnitTest::Failed() const { return impl()->Failed(); }
 // Gets the i-th test case among all the test cases. i can range from 0 to
 // total_test_case_count() - 1. If i is not in that range, returns NULL.
 const TestCase* UnitTest::GetTestCase(int i) const {
   return impl()->GetTestCase(i);
 }
 // Gets the i-th test case among all the test cases. i can range from 0 to
 // total_test_case_count() - 1. If i is not in that range, returns NULL.
 TestCase* UnitTest::GetMutableTestCase(int i) {
   return impl()->GetMutableTestCase(i);
 }
 // Returns the list of event listeners that can be used to track events
 // inside Google Test.
 TestEventListeners& UnitTest::listeners() {
   return *impl()->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) {
   if (env == NULL) {
     return NULL;
   }
   impl_->environments().push_back(env);
   return 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 internal::String& message,
     const internal::String& os_stack_trace)
         GTEST_LOCK_EXCLUDED_(mutex_) {
   Message msg;
   msg << message;
   internal::MutexLock lock(&mutex_);
   if (impl_->gtest_trace_stack().size() > 0) {
     msg << "\n" << GTEST_NAME_ << " trace:";
     for (int i = static_cast<int>(impl_->gtest_trace_stack().size());
          i > 0; --i) {
       const internal::TraceInfo& trace = impl_->gtest_trace_stack()[i - 1];
       msg << "\n" << internal::FormatFileLocation(trace.file, trace.line)
           << " " << trace.message;
     }
   }
   if (os_stack_trace.c_str() != NULL && !os_stack_trace.empty()) {
     msg << internal::kStackTraceMarker << os_stack_trace;
   }
   const TestPartResult result =
     TestPartResult(result_type, file_name, line_number,
                    msg.GetString().c_str());
   impl_->GetTestPartResultReporterForCurrentThread()->
       ReportTestPartResult(result);
   if (result_type != TestPartResult::kSuccess) {
     // gtest_break_on_failure takes precedence over
     // gtest_throw_on_failure.  This allows a user to set the latter
     // in the code (perhaps in order to use Google Test assertions
     // with another testing framework) and specify the former on the
     // command line for debugging.
     if (GTEST_FLAG(break_on_failure)) {
 #if GTEST_OS_WINDOWS
       // Using DebugBreak on Windows allows gtest to still break into a debugger
       // when a failure happens and both the --gtest_break_on_failure and
       // the --gtest_catch_exceptions flags are specified.
       DebugBreak();
 #else
       // Dereference NULL through a volatile pointer to prevent the compiler
       // from removing. We use this rather than abort() or __builtin_trap() for
       // portability: Symbian doesn't implement abort() well, and some debuggers
       // don't correctly trap abort().
       *static_cast<volatile int*>(NULL) = 1;
 #endif  // GTEST_OS_WINDOWS
     } else if (GTEST_FLAG(throw_on_failure)) {
 #if GTEST_HAS_EXCEPTIONS
       throw GoogleTestFailureException(result);
 #else
       // We cannot call abort() as it generates a pop-up in debug mode
       // that cannot be suppressed in VC 7.1 or below.
       exit(1);
 #endif
     }
   }
 }
 // Creates and adds a property to the current TestResult. If a property matching
 // the supplied value already exists, updates its value instead.
 void UnitTest::RecordPropertyForCurrentTest(const char* key,
                                             const char* value) {
   const TestProperty test_property(key, value);
   impl_->current_test_result()->RecordProperty(test_property);
 }
 // 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() {
   // Captures the value of GTEST_FLAG(catch_exceptions).  This value will be
   // used for the duration of the program.
   impl()->set_catch_exceptions(GTEST_FLAG(catch_exceptions));
 #if GTEST_HAS_SEH
   const bool in_death_test_child_process =
       internal::GTEST_FLAG(internal_run_death_test).length() > 0;
   // Either the user wants Google Test to catch exceptions thrown by the
   // tests or this is executing in the context of death test child
   // process. In either case the user does not want to see pop-up dialogs
   // about crashes - they are expected.
   if (impl()->catch_exceptions() || in_death_test_child_process) {
 # if !GTEST_OS_WINDOWS_MOBILE
     // SetErrorMode doesn't exist on CE.
     SetErrorMode(SEM_FAILCRITICALERRORS | SEM_NOALIGNMENTFAULTEXCEPT |
                  SEM_NOGPFAULTERRORBOX | SEM_NOOPENFILEERRORBOX);
 # endif  // !GTEST_OS_WINDOWS_MOBILE
 # if (defined(_MSC_VER) || GTEST_OS_WINDOWS_MINGW) && !GTEST_OS_WINDOWS_MOBILE
     // Death test children can be terminated with _abort().  On Windows,
     // _abort() can show a dialog with a warning message.  This forces the
     // abort message to go to stderr instead.
     _set_error_mode(_OUT_TO_STDERR);
 # endif
 # if _MSC_VER >= 1400 && !GTEST_OS_WINDOWS_MOBILE
     // In the debug version, Visual Studio pops up a separate dialog
     // offering a choice to debug the aborted program. We need to suppress
     // this dialog or it will pop up for every EXPECT/ASSERT_DEATH statement
     // executed. Google Test will notify the user of any unexpected
     // failure via stderr.
     //
     // VC++ doesn't define _set_abort_behavior() prior to the version 8.0.
     // Users of prior VC versions shall suffer the agony and pain of
     // clicking through the countless debug dialogs.
     // TODO(vladl@google.com): find a way to suppress the abort dialog() in the
     // debug mode when compiled with VC 7.1 or lower.
     if (!GTEST_FLAG(break_on_failure))
       _set_abort_behavior(
 x0,                                    // Clear the following flags:
           _WRITE_ABORT_MSG | _CALL_REPORTFAULT);  // pop-up window, core dump.
 # endif
   }
 #endif  // GTEST_HAS_SEH
   return internal::HandleExceptionsInMethodIfSupported(
       impl(),
       &internal::UnitTestImpl::RunAllTests,
       "auxiliary test code (environments or event listeners)") ? 0 : 1;
 }
 // Returns the working directory when the first TEST() or TEST_F() was
 // executed.
 const char* UnitTest::original_working_dir() const {
   return impl_->original_working_dir_.c_str();
 }
 // Returns the TestCase object for the test that's currently running,
 // or NULL if no test is running.
 const TestCase* UnitTest::current_test_case() const
     GTEST_LOCK_EXCLUDED_(mutex_) {
   internal::MutexLock lock(&mutex_);
   return impl_->current_test_case();
 }
 // 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_) {
   internal::MutexLock lock(&mutex_);
   return impl_->current_test_info();
 }
 // Returns the random seed used at the start of the current test run.
 int UnitTest::random_seed() const { return impl_->random_seed(); }
 #if GTEST_HAS_PARAM_TEST
 // Returns ParameterizedTestCaseRegistry object used to keep track of
 // value-parameterized tests and instantiate and register them.
 internal::ParameterizedTestCaseRegistry&
     UnitTest::parameterized_test_registry()
         GTEST_LOCK_EXCLUDED_(mutex_) {
   return impl_->parameterized_test_registry();
 }
 #endif  // GTEST_HAS_PARAM_TEST
 // Creates an empty UnitTest.
 UnitTest::UnitTest() {
   impl_ = new internal::UnitTestImpl(this);
 }
 // Destructor of UnitTest.
 UnitTest::~UnitTest() {
   delete impl_;
 }
 // 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_) {
   internal::MutexLock lock(&mutex_);
   impl_->gtest_trace_stack().push_back(trace);
 }
 // Pops a trace from the per-thread Google Test trace stack.
 void UnitTest::PopGTestTrace()
     GTEST_LOCK_EXCLUDED_(mutex_) {
   internal::MutexLock lock(&mutex_);
   impl_->gtest_trace_stack().pop_back();
 }
 namespace internal {
 UnitTestImpl::UnitTestImpl(UnitTest* parent)
     : parent_(parent),
 #ifdef _MSC_VER
 # pragma warning(push)                    // Saves the current warning state.
 # pragma warning(disable:4355)            // Temporarily disables warning 4355
                                          // (using this in initializer).
       default_global_test_part_result_reporter_(this),
       default_per_thread_test_part_result_reporter_(this),
 # pragma warning(pop)                     // Restores the warning state again.
 #else
       default_global_test_part_result_reporter_(this),
       default_per_thread_test_part_result_reporter_(this),
 #endif  // _MSC_VER
       global_test_part_result_repoter_(
           &default_global_test_part_result_reporter_),
       per_thread_test_part_result_reporter_(
           &default_per_thread_test_part_result_reporter_),
 #if GTEST_HAS_PARAM_TEST
       parameterized_test_registry_(),
       parameterized_tests_registered_(false),
 #endif  // GTEST_HAS_PARAM_TEST
       last_death_test_case_(-1),
       current_test_case_(NULL),
       current_test_info_(NULL),
       ad_hoc_test_result_(),
       os_stack_trace_getter_(NULL),
       post_flag_parse_init_performed_(false),
       random_seed_(0),  // Will be overridden by the flag before first use.
       random_(0),  // Will be reseeded before first use.
       start_timestamp_(0),
       elapsed_time_(0),
 #if GTEST_HAS_DEATH_TEST
       internal_run_death_test_flag_(NULL),
       death_test_factory_(new DefaultDeathTestFactory),
 #endif
       // Will be overridden by the flag before first use.
       catch_exceptions_(false) {
   listeners()->SetDefaultResultPrinter(new PrettyUnitTestResultPrinter);
 }
 UnitTestImpl::~UnitTestImpl() {
   // Deletes every TestCase.
   ForEach(test_cases_, internal::Delete<TestCase>);
   // Deletes every Environment.
   ForEach(environments_, internal::Delete<Environment>);
   delete os_stack_trace_getter_;
 }
 #if 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() {
   if (internal_run_death_test_flag_.get() != NULL)
     listeners()->SuppressEventForwarding();
 }
 #endif  // GTEST_HAS_DEATH_TEST
 // Initializes event listeners performing XML output as specified by
 // UnitTestOptions. Must not be called before InitGoogleTest.
 void UnitTestImpl::ConfigureXmlOutput() {
   const String& output_format = UnitTestOptions::GetOutputFormat();
   if (output_format == "xml") {
     listeners()->SetDefaultXmlGenerator(new XmlUnitTestResultPrinter(
         UnitTestOptions::GetAbsolutePathToOutputFile().c_str()));
   } else if (output_format != "") {
     printf("WARNING: unrecognized output format \"%s\" ignored.\n",
            output_format.c_str());
     fflush(stdout);
   }
 }
 #if GTEST_CAN_STREAM_RESULTS_
 // Initializes event listeners for streaming test results in String form.
 // Must not be called before InitGoogleTest.
 void UnitTestImpl::ConfigureStreamingOutput() {
   const string& target = GTEST_FLAG(stream_result_to);
   if (!target.empty()) {
     const size_t pos = target.find(':');
     if (pos != string::npos) {
       listeners()->Append(new StreamingListener(target.substr(0, pos),
                                                 target.substr(pos+1)));
     } else {
       printf("WARNING: unrecognized streaming target \"%s\" ignored.\n",
              target.c_str());
       fflush(stdout);
     }
   }
 }
 #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() {
   // Ensures that this function does not execute more than once.
   if (!post_flag_parse_init_performed_) {
     post_flag_parse_init_performed_ = true;
 #if GTEST_HAS_DEATH_TEST
     InitDeathTestSubprocessControlInfo();
     SuppressTestEventsIfInSubprocess();
 #endif  // GTEST_HAS_DEATH_TEST
     // Registers parameterized tests. This makes parameterized tests
     // available to the UnitTest reflection API without running
     // RUN_ALL_TESTS.
     RegisterParameterizedTests();
     // Configures listeners for XML output. This makes it possible for users
     // to shut down the default XML output before invoking RUN_ALL_TESTS.
     ConfigureXmlOutput();
 #if GTEST_CAN_STREAM_RESULTS_
     // Configures listeners for streaming test results to the specified server.
     ConfigureStreamingOutput();
 #endif  // GTEST_CAN_STREAM_RESULTS_
   }
 }
 // A predicate that checks the name of a TestCase 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.
 //
 // TestCaseNameIs is copyable.
 class TestCaseNameIs {
  public:
   // Constructor.
   explicit TestCaseNameIs(const String& name)
       : name_(name) {}
   // Returns true iff the name of test_case matches name_.
   bool operator()(const TestCase* test_case) const {
     return test_case != NULL && strcmp(test_case->name(), name_.c_str()) == 0;
   }
  private:
   String name_;
 };
 // Finds and returns a TestCase 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_case_name: name of the test case
 //   type_param:     the name of the test case's type parameter, or NULL if
 //                   this is not a typed or a type-parameterized test case.
 //   set_up_tc:      pointer to the function that sets up the test case
 //   tear_down_tc:   pointer to the function that tears down the test case
 TestCase* UnitTestImpl::GetTestCase(const char* test_case_name,
                                     const char* type_param,
                                     Test::SetUpTestCaseFunc set_up_tc,
                                     Test::TearDownTestCaseFunc tear_down_tc) {
   // Can we find a TestCase with the given name?
   const std::vector<TestCase*>::const_iterator test_case =
       std::find_if(test_cases_.begin(), test_cases_.end(),
                    TestCaseNameIs(test_case_name));
   if (test_case != test_cases_.end())
     return *test_case;
   // No.  Let's create one.
   TestCase* const new_test_case =
       new TestCase(test_case_name, type_param, set_up_tc, tear_down_tc);
   // Is this a death test case?
   if (internal::UnitTestOptions::MatchesFilter(String(test_case_name),
                                                kDeathTestCaseFilter)) {
     // Yes.  Inserts the test case after the last death test case
     // defined so far.  This only works when the test cases haven't
     // been shuffled.  Otherwise we may end up running a death test
     // after a non-death test.
     ++last_death_test_case_;
     test_cases_.insert(test_cases_.begin() + last_death_test_case_,
                        new_test_case);
   } else {
     // No.  Appends to the end of the list.
     test_cases_.push_back(new_test_case);
   }
   test_case_indices_.push_back(static_cast<int>(test_case_indices_.size()));
   return new_test_case;
 }
 // Helpers for setting up / tearing down the given environment.  They
 // are for use in the ForEach() function.
 static void SetUpEnvironment(Environment* env) { env->SetUp(); }
 static void TearDownEnvironment(Environment* env) { env->TearDown(); }
 // 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() {
   // Makes sure InitGoogleTest() was called.
   if (!GTestIsInitialized()) {
     printf("%s",
            "\nThis test program did NOT call ::testing::InitGoogleTest "
            "before calling RUN_ALL_TESTS().  Please fix it.\n");
     return false;
   }
   // Do not run any test if the --help flag was specified.
   if (g_help_flag)
     return true;
   // Repeats the call to the post-flag parsing initialization in case the
   // user didn't call InitGoogleTest.
   PostFlagParsingInit();
   // Even if sharding is not on, test runners may want to use the
   // GTEST_SHARD_STATUS_FILE to query whether the test supports the sharding
   // protocol.
   internal::WriteToShardStatusFileIfNeeded();
   // True iff we are in a subprocess for running a thread-safe-style
   // death test.
   bool in_subprocess_for_death_test = false;
 #if GTEST_HAS_DEATH_TEST
   in_subprocess_for_death_test = (internal_run_death_test_flag_.get() != NULL);
 #endif  // GTEST_HAS_DEATH_TEST
   const bool should_shard = ShouldShard(kTestTotalShards, kTestShardIndex,
                                         in_subprocess_for_death_test);
   // Compares the full test names with the filter to decide which
   // tests to run.
   const bool has_tests_to_run = FilterTests(should_shard
                                               ? HONOR_SHARDING_PROTOCOL
                                               : IGNORE_SHARDING_PROTOCOL) > 0;
   // Lists the tests and exits if the --gtest_list_tests flag was specified.
   if (GTEST_FLAG(list_tests)) {
     // This must be called *after* FilterTests() has been called.
     ListTestsMatchingFilter();
     return true;
   }
   random_seed_ = GTEST_FLAG(shuffle) ?
       GetRandomSeedFromFlag(GTEST_FLAG(random_seed)) : 0;
   // True iff at least one test has failed.
   bool failed = false;
   TestEventListener* repeater = listeners()->repeater();
   start_timestamp_ = GetTimeInMillis();
   repeater->OnTestProgramStart(*parent_);
   // How many times to repeat the tests?  We don't want to repeat them
   // when we are inside the subprocess of a death test.
   const int repeat = in_subprocess_for_death_test ? 1 : GTEST_FLAG(repeat);
   // Repeats forever if the repeat count is negative.
   const bool forever = repeat < 0;
   for (int i = 0; forever || i != repeat; i++) {
     // We want to preserve failures generated by ad-hoc test
     // assertions executed before RUN_ALL_TESTS().
     ClearNonAdHocTestResult();
     const TimeInMillis start = GetTimeInMillis();
     // Shuffles test cases and tests if requested.
     if (has_tests_to_run && GTEST_FLAG(shuffle)) {
       random()->Reseed(random_seed_);
       // This should be done before calling OnTestIterationStart(),
       // such that a test event listener can see the actual test order
       // in the event.
       ShuffleTests();
     }
     // Tells the unit test event listeners that the tests are about to start.
     repeater->OnTestIterationStart(*parent_, i);
     // Runs each test case if there is at least one test to run.
     if (has_tests_to_run) {
       // Sets up all environments beforehand.
       repeater->OnEnvironmentsSetUpStart(*parent_);
       ForEach(environments_, SetUpEnvironment);
       repeater->OnEnvironmentsSetUpEnd(*parent_);
       // Runs the tests only if there was no fatal failure during global
       // set-up.
       if (!Test::HasFatalFailure()) {
         for (int test_index = 0; test_index < total_test_case_count();
              test_index++) {
           GetMutableTestCase(test_index)->Run();
         }
       }
       // Tears down all environments in reverse order afterwards.
       repeater->OnEnvironmentsTearDownStart(*parent_);
       std::for_each(environments_.rbegin(), environments_.rend(),
                     TearDownEnvironment);
       repeater->OnEnvironmentsTearDownEnd(*parent_);
     }
     elapsed_time_ = GetTimeInMillis() - start;
     // Tells the unit test event listener that the tests have just finished.
     repeater->OnTestIterationEnd(*parent_, i);
     // Gets the result and clears it.
     if (!Passed()) {
       failed = true;
     }
     // Restores the original test order after the iteration.  This
     // allows the user to quickly repro a failure that happens in the
     // N-th iteration without repeating the first (N - 1) iterations.
     // This is not enclosed in "if (GTEST_FLAG(shuffle)) { ... }", in
     // case the user somehow changes the value of the flag somewhere
     // (it's always safe to unshuffle the tests).
     UnshuffleTests();
     if (GTEST_FLAG(shuffle)) {
       // Picks a new random seed for each iteration.
       random_seed_ = GetNextRandomSeed(random_seed_);
     }
   }
   repeater->OnTestProgramEnd(*parent_);
   return !failed;
 }
 // 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() {
   const char* const test_shard_file = posix::GetEnv(kTestShardStatusFile);
   if (test_shard_file != NULL) {
     FILE* const file = posix::FOpen(test_shard_file, "w");
     if (file == NULL) {
       ColoredPrintf(COLOR_RED,
                     "Could not write to the test shard status file \"%s\" "
                     "specified by the %s environment variable.\n",
                     test_shard_file, kTestShardStatusFile);
       fflush(stdout);
       exit(EXIT_FAILURE);
     }
     fclose(file);
   }
 }
 // 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) {
   if (in_subprocess_for_death_test) {
     return false;
   }
   const Int32 total_shards = Int32FromEnvOrDie(total_shards_env, -1);
   const Int32 shard_index = Int32FromEnvOrDie(shard_index_env, -1);
   if (total_shards == -1 && shard_index == -1) {
     return false;
   } else if (total_shards == -1 && shard_index != -1) {
     const Message msg = Message()
       << "Invalid environment variables: you have "
       << kTestShardIndex << " = " << shard_index
       << ", but have left " << kTestTotalShards << " unset.\n";
     ColoredPrintf(COLOR_RED, msg.GetString().c_str());
     fflush(stdout);
     exit(EXIT_FAILURE);
   } else if (total_shards != -1 && shard_index == -1) {
     const Message msg = Message()
       << "Invalid environment variables: you have "
       << kTestTotalShards << " = " << total_shards
       << ", but have left " << kTestShardIndex << " unset.\n";
     ColoredPrintf(COLOR_RED, msg.GetString().c_str());
     fflush(stdout);
     exit(EXIT_FAILURE);
   } else if (shard_index < 0 || shard_index >= total_shards) {
     const Message msg = Message()
       << "Invalid environment variables: we require 0 <= "
       << kTestShardIndex << " < " << kTestTotalShards
       << ", but you have " << kTestShardIndex << "=" << shard_index
       << ", " << kTestTotalShards << "=" << total_shards << ".\n";
     ColoredPrintf(COLOR_RED, msg.GetString().c_str());
     fflush(stdout);
     exit(EXIT_FAILURE);
   }
   return total_shards > 1;
 }
 // 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 Int32FromEnvOrDie(const char* var, Int32 default_val) {
   const char* str_val = posix::GetEnv(var);
   if (str_val == NULL) {
     return default_val;
   }
   Int32 result;
   if (!ParseInt32(Message() << "The value of environment variable " << var,
                   str_val, &result)) {
     exit(EXIT_FAILURE);
   }
   return result;
 }
 // Given the total number of shards, the shard index, and the test id,
 // returns true iff the test should be run on this shard. The test id is
 // some arbitrary but unique non-negative integer assigned to each test
 // method. Assumes that 0 <= shard_index < total_shards.
 bool ShouldRunTestOnShard(int total_shards, int shard_index, int test_id) {
   return (test_id % total_shards) == shard_index;
 }
 // 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 TestCase and TestInfo object.
 // If shard_tests == true, further filters tests based on sharding
 // variables in the environment - see
 // http://code.google.com/p/googletest/wiki/GoogleTestAdvancedGuide.
 // Returns the number of tests that should run.
 int UnitTestImpl::FilterTests(ReactionToSharding shard_tests) {
   const Int32 total_shards = shard_tests == HONOR_SHARDING_PROTOCOL ?
       Int32FromEnvOrDie(kTestTotalShards, -1) : -1;
   const Int32 shard_index = shard_tests == HONOR_SHARDING_PROTOCOL ?
       Int32FromEnvOrDie(kTestShardIndex, -1) : -1;
   // num_runnable_tests are the number of tests that will
   // run across all shards (i.e., match filter and are not disabled).
   // num_selected_tests are the number of tests to be run on
   // this shard.
   int num_runnable_tests = 0;
   int num_selected_tests = 0;
   for (size_t i = 0; i < test_cases_.size(); i++) {
     TestCase* const test_case = test_cases_[i];
     const String &test_case_name = test_case->name();
     test_case->set_should_run(false);
     for (size_t j = 0; j < test_case->test_info_list().size(); j++) {
       TestInfo* const test_info = test_case->test_info_list()[j];
       const String test_name(test_info->name());
       // A test is disabled if test case name or test name matches
       // kDisableTestFilter.
       const bool is_disabled =
           internal::UnitTestOptions::MatchesFilter(test_case_name,
                                                    kDisableTestFilter) ||
           internal::UnitTestOptions::MatchesFilter(test_name,
                                                    kDisableTestFilter);
       test_info->is_disabled_ = is_disabled;
       const bool matches_filter =
           internal::UnitTestOptions::FilterMatchesTest(test_case_name,
                                                        test_name);
       test_info->matches_filter_ = matches_filter;
       const bool is_runnable =
           (GTEST_FLAG(also_run_disabled_tests) || !is_disabled) &&
           matches_filter;
       const bool is_selected = is_runnable &&
           (shard_tests == IGNORE_SHARDING_PROTOCOL ||
            ShouldRunTestOnShard(total_shards, shard_index,
                                 num_runnable_tests));
       num_runnable_tests += is_runnable;
       num_selected_tests += is_selected;
       test_info->should_run_ = is_selected;
       test_case->set_should_run(test_case->should_run() || is_selected);
     }
   }
   return num_selected_tests;
 }
 // Prints the names of the tests matching the user-specified filter flag.
 void UnitTestImpl::ListTestsMatchingFilter() {
   for (size_t i = 0; i < test_cases_.size(); i++) {
     const TestCase* const test_case = test_cases_[i];
     bool printed_test_case_name = false;
     for (size_t j = 0; j < test_case->test_info_list().size(); j++) {
       const TestInfo* const test_info =
           test_case->test_info_list()[j];
       if (test_info->matches_filter_) {
         if (!printed_test_case_name) {
           printed_test_case_name = true;
           printf("%s.\n", test_case->name());
         }
         printf("  %s\n", test_info->name());
       }
     }
   }
   fflush(stdout);
 }
 // 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) {
   if (os_stack_trace_getter_ != getter) {
     delete os_stack_trace_getter_;
     os_stack_trace_getter_ = 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() {
   if (os_stack_trace_getter_ == NULL) {
     os_stack_trace_getter_ = new OsStackTraceGetter;
   }
   return os_stack_trace_getter_;
 }
 // Returns the TestResult for the test that's currently running, or
 // the TestResult for the ad hoc test if no test is running.
 TestResult* UnitTestImpl::current_test_result() {
   return current_test_info_ ?
       &(current_test_info_->result_) : &ad_hoc_test_result_;
 }
 // Shuffles all test cases, and the tests within each test case,
 // making sure that death tests are still run first.
 void UnitTestImpl::ShuffleTests() {
   // Shuffles the death test cases.
   ShuffleRange(random(), 0, last_death_test_case_ + 1, &test_case_indices_);
   // Shuffles the non-death test cases.
   ShuffleRange(random(), last_death_test_case_ + 1,
                static_cast<int>(test_cases_.size()), &test_case_indices_);
   // Shuffles the tests inside each test case.
   for (size_t i = 0; i < test_cases_.size(); i++) {
     test_cases_[i]->ShuffleTests(random());
   }
 }
 // Restores the test cases and tests to their order before the first shuffle.
 void UnitTestImpl::UnshuffleTests() {
   for (size_t i = 0; i < test_cases_.size(); i++) {
     // Unshuffles the tests in each test case.
     test_cases_[i]->UnshuffleTests();
     // Resets the index of each test case.
     test_case_indices_[i] = static_cast<int>(i);
   }
 }
 // Returns the current OS stack trace as a 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.
 String GetCurrentOsStackTraceExceptTop(UnitTest* /*unit_test*/,
                                        int skip_count) {
   // We pass skip_count + 1 to skip this wrapper function in addition
   // to what the user really wants to skip.
   return GetUnitTestImpl()->CurrentOsStackTraceExceptTop(skip_count + 1);
 }
 // Used by the GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_ macro to
 // suppress unreachable code warnings.
 namespace {
 class ClassUniqueToAlwaysTrue {};
 }
 bool IsTrue(bool condition) { return condition; }
 bool AlwaysTrue() {
 #if GTEST_HAS_EXCEPTIONS
   // This condition is always false so AlwaysTrue() never actually throws,
   // but it makes the compiler think that it may throw.
   if (IsTrue(false))
     throw ClassUniqueToAlwaysTrue();
 #endif  // GTEST_HAS_EXCEPTIONS
   return true;
 }
 // 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) {
   const size_t prefix_len = strlen(prefix);
   if (strncmp(*pstr, prefix, prefix_len) == 0) {
     *pstr += prefix_len;
     return true;
   }
   return false;
 }
 // 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.
 const char* ParseFlagValue(const char* str,
                            const char* flag,
                            bool def_optional) {
   // str and flag must not be NULL.
   if (str == NULL || flag == NULL) return NULL;
   // The flag must start with "--" followed by GTEST_FLAG_PREFIX_.
   const String flag_str = String::Format("--%s%s", GTEST_FLAG_PREFIX_, flag);
   const size_t flag_len = flag_str.length();
   if (strncmp(str, flag_str.c_str(), flag_len) != 0) return NULL;
   // Skips the flag name.
   const char* flag_end = str + flag_len;
   // When def_optional is true, it's OK to not have a "=value" part.
   if (def_optional && (flag_end[0] == '\0')) {
     return flag_end;
   }
   // If def_optional is true and there are more characters after the
   // flag name, or if def_optional is false, there must be a '=' after
   // the flag name.
   if (flag_end[0] != '=') return NULL;
   // Returns the string after "=".
   return flag_end + 1;
 }
 // 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.
 bool ParseBoolFlag(const char* str, const char* flag, bool* value) {
   // Gets the value of the flag as a string.
   const char* const value_str = ParseFlagValue(str, flag, true);
   // Aborts if the parsing failed.
   if (value_str == NULL) return false;
   // Converts the string value to a bool.
   *value = !(*value_str == '0' || *value_str == 'f' || *value_str == 'F');
   return true;
 }
 // Parses a string for an Int32 flag, in the form of
 // "--flag=value".
 //
 // On success, stores the value of the flag in *value, and returns
 // true.  On failure, returns false without changing *value.
 bool ParseInt32Flag(const char* str, const char* flag, Int32* value) {
   // Gets the value of the flag as a string.
   const char* const value_str = ParseFlagValue(str, flag, false);
   // Aborts if the parsing failed.
   if (value_str == NULL) return false;
   // Sets *value to the value of the flag.
   return ParseInt32(Message() << "The value of flag --" << flag,
                     value_str, 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.
 bool ParseStringFlag(const char* str, const char* flag, String* value) {
   // Gets the value of the flag as a string.
   const char* const value_str = ParseFlagValue(str, flag, false);
   // Aborts if the parsing failed.
   if (value_str == NULL) return false;
   // Sets *value to the value of the flag.
   *value = value_str;
   return true;
 }
 // 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) {
   return (SkipPrefix("--", &str) ||
           SkipPrefix("-", &str) ||
           SkipPrefix("/", &str)) &&
          !SkipPrefix(GTEST_FLAG_PREFIX_ "internal_", &str) &&
          (SkipPrefix(GTEST_FLAG_PREFIX_, &str) ||
           SkipPrefix(GTEST_FLAG_PREFIX_DASH_, &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.
 //
 // TODO(wan@google.com): Write tests for this once we add stdout
 // capturing to Google Test.
 static void PrintColorEncoded(const char* str) {
   GTestColor color = COLOR_DEFAULT;  // The current color.
   // Conceptually, we split the string into segments divided by escape
   // sequences.  Then we print one segment at a time.  At the end of
   // each iteration, the str pointer advances to the beginning of the
   // next segment.
   for (;;) {
     const char* p = strchr(str, '@');
     if (p == NULL) {
       ColoredPrintf(color, "%s", str);
       return;
     }
     ColoredPrintf(color, "%s", String(str, p - str).c_str());
     const char ch = p[1];
     str = p + 2;
     if (ch == '@') {
       ColoredPrintf(color, "@");
     } else if (ch == 'D') {
       color = COLOR_DEFAULT;
     } else if (ch == 'R') {
       color = COLOR_RED;
     } else if (ch == 'G') {
       color = COLOR_GREEN;
     } else if (ch == 'Y') {
       color = COLOR_YELLOW;
     } else {
       --str;
     }
   }
 }
 static const char kColorEncodedHelpMessage[] =
 "This program contains tests written using " GTEST_NAME_ ". You can use the\n"
 "following command line flags to control its behavior:\n"
 "\n"
 "Test Selection:\n"
 "  @G--" GTEST_FLAG_PREFIX_ "list_tests@D\n"
 "      List the names of all tests instead of running them. The name of\n"
 "      TEST(Foo, Bar) is \"Foo.Bar\".\n"
 "  @G--" GTEST_FLAG_PREFIX_ "filter=@YPOSTIVE_PATTERNS"
     "[@G-@YNEGATIVE_PATTERNS]@D\n"
 "      Run only the tests whose name matches one of the positive patterns but\n"
 "      none of the negative patterns. '?' matches any single character; '*'\n"
 "      matches any substring; ':' separates two patterns.\n"
 "  @G--" GTEST_FLAG_PREFIX_ "also_run_disabled_tests@D\n"
 "      Run all disabled tests too.\n"
 "\n"
 "Test Execution:\n"
 "  @G--" GTEST_FLAG_PREFIX_ "repeat=@Y[COUNT]@D\n"
 "      Run the tests repeatedly; use a negative count to repeat forever.\n"
 "  @G--" GTEST_FLAG_PREFIX_ "shuffle@D\n"
 "      Randomize tests' orders on every iteration.\n"
 "  @G--" GTEST_FLAG_PREFIX_ "random_seed=@Y[NUMBER]@D\n"
 "      Random number seed to use for shuffling test orders (between 1 and\n"
 "      99999, or 0 to use a seed based on the current time).\n"
 "\n"
 "Test Output:\n"
 "  @G--" GTEST_FLAG_PREFIX_ "color=@Y(@Gyes@Y|@Gno@Y|@Gauto@Y)@D\n"
 "      Enable/disable colored output. The default is @Gauto@D.\n"
 "  -@G-" GTEST_FLAG_PREFIX_ "print_time=0@D\n"
 "      Don't print the elapsed time of each test.\n"
 "  @G--" GTEST_FLAG_PREFIX_ "output=xml@Y[@G:@YDIRECTORY_PATH@G"
     GTEST_PATH_SEP_ "@Y|@G:@YFILE_PATH]@D\n"
 "      Generate an XML report in the given directory or with the given file\n"
 "      name. @YFILE_PATH@D defaults to @Gtest_details.xml@D.\n"
 #if GTEST_CAN_STREAM_RESULTS_
 "  @G--" GTEST_FLAG_PREFIX_ "stream_result_to=@YHOST@G:@YPORT@D\n"
 "      Stream test results to the given server.\n"
 #endif  // GTEST_CAN_STREAM_RESULTS_
 "\n"
 "Assertion Behavior:\n"
 #if GTEST_HAS_DEATH_TEST && !GTEST_OS_WINDOWS
 "  @G--" GTEST_FLAG_PREFIX_ "death_test_style=@Y(@Gfast@Y|@Gthreadsafe@Y)@D\n"
 "      Set the default death test style.\n"
 #endif  // GTEST_HAS_DEATH_TEST && !GTEST_OS_WINDOWS
 "  @G--" GTEST_FLAG_PREFIX_ "break_on_failure@D\n"
 "      Turn assertion failures into debugger break-points.\n"
 "  @G--" GTEST_FLAG_PREFIX_ "throw_on_failure@D\n"
 "      Turn assertion failures into C++ exceptions.\n"
 "  @G--" GTEST_FLAG_PREFIX_ "catch_exceptions=0@D\n"
 "      Do not report exceptions as test failures. Instead, allow them\n"
 "      to crash the program or throw a pop-up (on Windows).\n"
 "\n"
 "Except for @G--" GTEST_FLAG_PREFIX_ "list_tests@D, you can alternatively set "
     "the corresponding\n"
 "environment variable of a flag (all letters in upper-case). For example, to\n"
 "disable colored text output, you can either specify @G--" GTEST_FLAG_PREFIX_
     "color=no@D or set\n"
 "the @G" GTEST_FLAG_PREFIX_UPPER_ "COLOR@D environment variable to @Gno@D.\n"
 "\n"
 "For more information, please read the " GTEST_NAME_ " documentation at\n"
 "@G" GTEST_PROJECT_URL_ "@D. If you find a bug in " GTEST_NAME_ "\n"
 "(not one in your own code or tests), please report it to\n"
 "@G<" GTEST_DEV_EMAIL_ ">@D.\n";
 // 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) {
   for (int i = 1; i < *argc; i++) {
     const String arg_string = StreamableToString(argv[i]);
     const char* const arg = arg_string.c_str();
     using internal::ParseBoolFlag;
     using internal::ParseInt32Flag;
     using internal::ParseStringFlag;
     // Do we see a Google Test flag?
     if (ParseBoolFlag(arg, kAlsoRunDisabledTestsFlag,
                       &GTEST_FLAG(also_run_disabled_tests)) ||
         ParseBoolFlag(arg, kBreakOnFailureFlag,
                       &GTEST_FLAG(break_on_failure)) ||
         ParseBoolFlag(arg, kCatchExceptionsFlag,
                       &GTEST_FLAG(catch_exceptions)) ||
         ParseStringFlag(arg, kColorFlag, &GTEST_FLAG(color)) ||
         ParseStringFlag(arg, kDeathTestStyleFlag,
                         &GTEST_FLAG(death_test_style)) ||
         ParseBoolFlag(arg, kDeathTestUseFork,
                       &GTEST_FLAG(death_test_use_fork)) ||
         ParseStringFlag(arg, kFilterFlag, &GTEST_FLAG(filter)) ||
         ParseStringFlag(arg, kInternalRunDeathTestFlag,
                         &GTEST_FLAG(internal_run_death_test)) ||
         ParseBoolFlag(arg, kListTestsFlag, &GTEST_FLAG(list_tests)) ||
         ParseStringFlag(arg, kOutputFlag, &GTEST_FLAG(output)) ||
         ParseBoolFlag(arg, kPrintTimeFlag, &GTEST_FLAG(print_time)) ||
         ParseInt32Flag(arg, kRandomSeedFlag, &GTEST_FLAG(random_seed)) ||
         ParseInt32Flag(arg, kRepeatFlag, &GTEST_FLAG(repeat)) ||
         ParseBoolFlag(arg, kShuffleFlag, &GTEST_FLAG(shuffle)) ||
         ParseInt32Flag(arg, kStackTraceDepthFlag,
                        &GTEST_FLAG(stack_trace_depth)) ||
         ParseStringFlag(arg, kStreamResultToFlag,
                         &GTEST_FLAG(stream_result_to)) ||
         ParseBoolFlag(arg, kThrowOnFailureFlag,
                       &GTEST_FLAG(throw_on_failure))
         ) {
       // Yes.  Shift the remainder of the argv list left by one.  Note
       // that argv has (*argc + 1) elements, the last one always being
       // NULL.  The following loop moves the trailing NULL element as
       // well.
       for (int j = i; j != *argc; j++) {
         argv[j] = argv[j + 1];
       }
       // Decrements the argument count.
       (*argc)--;
       // We also need to decrement the iterator as we just removed
       // an element.
       i--;
     } else if (arg_string == "--help" || arg_string == "-h" ||
                arg_string == "-?" || arg_string == "/?" ||
                HasGoogleTestFlagPrefix(arg)) {
       // Both help flag and unrecognized Google Test flags (excluding
       // internal ones) trigger help display.
       g_help_flag = true;
     }
   }
   if (g_help_flag) {
     // We print the help here instead of in RUN_ALL_TESTS(), as the
     // latter may not be called at all if the user is using Google
     // Test with another testing framework.
     PrintColorEncoded(kColorEncodedHelpMessage);
   }
 }
 // Parses the command line for Google Test flags, without initializing
 // other parts of Google Test.
 void ParseGoogleTestFlagsOnly(int* argc, char** argv) {
   ParseGoogleTestFlagsOnlyImpl(argc, argv);
 }
 void ParseGoogleTestFlagsOnly(int* argc, wchar_t** argv) {
   ParseGoogleTestFlagsOnlyImpl(argc, 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) {
   g_init_gtest_count++;
   // We don't want to run the initialization code twice.
   if (g_init_gtest_count != 1) return;
   if (*argc <= 0) return;
   internal::g_executable_path = internal::StreamableToString(argv[0]);
 #if GTEST_HAS_DEATH_TEST
   g_argvs.clear();
   for (int i = 0; i != *argc; i++) {
     g_argvs.push_back(StreamableToString(argv[i]));
   }
 #endif  // GTEST_HAS_DEATH_TEST
   ParseGoogleTestFlagsOnly(argc, argv);
   GetUnitTestImpl()->PostFlagParsingInit();
 }
 }  // 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) {
   internal::InitGoogleTestImpl(argc, argv);
 }
 // This overloaded version can be used in Windows programs compiled in
 // UNICODE mode.
 void InitGoogleTest(int* argc, wchar_t** argv) {
   internal::InitGoogleTestImpl(argc, argv);
 }
 }  // namespace testing

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media/webrtc/trunk/testing/gtest/src/gtest.cc@a63d609f5ebe (annotated)

media/webrtc/trunk/testing/gtest/src/gtest.cc