gtest-internal-inl.h
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29 
30 // Utility functions and classes used by the Google C++ testing framework.
31 //
32 // Author: wan@google.com (Zhanyong Wan)
33 //
34 // This file contains purely Google Test's internal implementation. Please
35 // DO NOT #INCLUDE IT IN A USER PROGRAM.
36 
37 #ifndef GTEST_SRC_GTEST_INTERNAL_INL_H_
38 #define GTEST_SRC_GTEST_INTERNAL_INL_H_
39 
40 // GTEST_IMPLEMENTATION_ is defined to 1 iff the current translation unit is
41 // part of Google Test's implementation; otherwise it's undefined.
42 #if !GTEST_IMPLEMENTATION_
43 // A user is trying to include this from his code - just say no.
44 # error "gtest-internal-inl.h is part of Google Test's internal implementation."
45 # error "It must not be included except by Google Test itself."
46 #endif // GTEST_IMPLEMENTATION_
47 
48 #ifndef _WIN32_WCE
49 # include <errno.h>
50 #endif // !_WIN32_WCE
51 #include <stddef.h>
52 #include <stdlib.h> // For strtoll/_strtoul64/malloc/free.
53 #include <string.h> // For memmove.
54 
55 #include <algorithm>
56 #include <string>
57 #include <vector>
58 
60 
61 #if GTEST_CAN_STREAM_RESULTS_
62 # include <arpa/inet.h> // NOLINT
63 # include <netdb.h> // NOLINT
64 #endif
65 
66 #if GTEST_OS_WINDOWS
67 # include <windows.h> // NOLINT
68 #endif // GTEST_OS_WINDOWS
69 
70 #include "gtest/gtest.h" // NOLINT
71 #include "gtest/gtest-spi.h"
72 
73 namespace testing {
74 
75 // Declares the flags.
76 //
77 // We don't want the users to modify this flag in the code, but want
78 // Google Test's own unit tests to be able to access it. Therefore we
79 // declare it here as opposed to in gtest.h.
80 GTEST_DECLARE_bool_(death_test_use_fork);
81 
82 namespace internal {
83 
84 // The value of GetTestTypeId() as seen from within the Google Test
85 // library. This is solely for testing GetTestTypeId().
87 
88 // Names of the flags (needed for parsing Google Test flags).
89 const char kAlsoRunDisabledTestsFlag[] = "also_run_disabled_tests";
90 const char kBreakOnFailureFlag[] = "break_on_failure";
91 const char kCatchExceptionsFlag[] = "catch_exceptions";
92 const char kColorFlag[] = "color";
93 const char kFilterFlag[] = "filter";
94 const char kListTestsFlag[] = "list_tests";
95 const char kOutputFlag[] = "output";
96 const char kPrintTimeFlag[] = "print_time";
97 const char kRandomSeedFlag[] = "random_seed";
98 const char kRepeatFlag[] = "repeat";
99 const char kShuffleFlag[] = "shuffle";
100 const char kStackTraceDepthFlag[] = "stack_trace_depth";
101 const char kStreamResultToFlag[] = "stream_result_to";
102 const char kThrowOnFailureFlag[] = "throw_on_failure";
103 
104 // A valid random seed must be in [1, kMaxRandomSeed].
105 const int kMaxRandomSeed = 99999;
106 
107 // g_help_flag is true iff the --help flag or an equivalent form is
108 // specified on the command line.
109 GTEST_API_ extern bool g_help_flag;
110 
111 // Returns the current time in milliseconds.
113 
114 // Returns true iff Google Test should use colors in the output.
115 GTEST_API_ bool ShouldUseColor(bool stdout_is_tty);
116 
117 // Formats the given time in milliseconds as seconds.
119 
120 // Converts the given time in milliseconds to a date string in the ISO 8601
121 // format, without the timezone information. N.B.: due to the use the
122 // non-reentrant localtime() function, this function is not thread safe. Do
123 // not use it in any code that can be called from multiple threads.
125 
126 // Parses a string for an Int32 flag, in the form of "--flag=value".
127 //
128 // On success, stores the value of the flag in *value, and returns
129 // true. On failure, returns false without changing *value.
131  const char* str, const char* flag, Int32* value);
132 
133 // Returns a random seed in range [1, kMaxRandomSeed] based on the
134 // given --gtest_random_seed flag value.
135 inline int GetRandomSeedFromFlag(Int32 random_seed_flag) {
136  const unsigned int raw_seed = (random_seed_flag == 0) ?
137  static_cast<unsigned int>(GetTimeInMillis()) :
138  static_cast<unsigned int>(random_seed_flag);
139 
140  // Normalizes the actual seed to range [1, kMaxRandomSeed] such that
141  // it's easy to type.
142  const int normalized_seed =
143  static_cast<int>((raw_seed - 1U) %
144  static_cast<unsigned int>(kMaxRandomSeed)) + 1;
145  return normalized_seed;
146 }
147 
148 // Returns the first valid random seed after 'seed'. The behavior is
149 // undefined if 'seed' is invalid. The seed after kMaxRandomSeed is
150 // considered to be 1.
151 inline int GetNextRandomSeed(int seed) {
152  GTEST_CHECK_(1 <= seed && seed <= kMaxRandomSeed)
153  << "Invalid random seed " << seed << " - must be in [1, "
154  << kMaxRandomSeed << "].";
155  const int next_seed = seed + 1;
156  return (next_seed > kMaxRandomSeed) ? 1 : next_seed;
157 }
158 
159 // This class saves the values of all Google Test flags in its c'tor, and
160 // restores them in its d'tor.
162  public:
163  // The c'tor.
165  also_run_disabled_tests_ = GTEST_FLAG(also_run_disabled_tests);
166  break_on_failure_ = GTEST_FLAG(break_on_failure);
167  catch_exceptions_ = GTEST_FLAG(catch_exceptions);
168  color_ = GTEST_FLAG(color);
169  death_test_style_ = GTEST_FLAG(death_test_style);
170  death_test_use_fork_ = GTEST_FLAG(death_test_use_fork);
171  filter_ = GTEST_FLAG(filter);
172  internal_run_death_test_ = GTEST_FLAG(internal_run_death_test);
173  list_tests_ = GTEST_FLAG(list_tests);
174  output_ = GTEST_FLAG(output);
175  print_time_ = GTEST_FLAG(print_time);
176  random_seed_ = GTEST_FLAG(random_seed);
177  repeat_ = GTEST_FLAG(repeat);
178  shuffle_ = GTEST_FLAG(shuffle);
179  stack_trace_depth_ = GTEST_FLAG(stack_trace_depth);
180  stream_result_to_ = GTEST_FLAG(stream_result_to);
181  throw_on_failure_ = GTEST_FLAG(throw_on_failure);
182  }
183 
184  // The d'tor is not virtual. DO NOT INHERIT FROM THIS CLASS.
186  GTEST_FLAG(also_run_disabled_tests) = also_run_disabled_tests_;
187  GTEST_FLAG(break_on_failure) = break_on_failure_;
188  GTEST_FLAG(catch_exceptions) = catch_exceptions_;
189  GTEST_FLAG(color) = color_;
190  GTEST_FLAG(death_test_style) = death_test_style_;
191  GTEST_FLAG(death_test_use_fork) = death_test_use_fork_;
192  GTEST_FLAG(filter) = filter_;
193  GTEST_FLAG(internal_run_death_test) = internal_run_death_test_;
194  GTEST_FLAG(list_tests) = list_tests_;
195  GTEST_FLAG(output) = output_;
196  GTEST_FLAG(print_time) = print_time_;
197  GTEST_FLAG(random_seed) = random_seed_;
198  GTEST_FLAG(repeat) = repeat_;
199  GTEST_FLAG(shuffle) = shuffle_;
200  GTEST_FLAG(stack_trace_depth) = stack_trace_depth_;
201  GTEST_FLAG(stream_result_to) = stream_result_to_;
202  GTEST_FLAG(throw_on_failure) = throw_on_failure_;
203  }
204 
205  private:
206  // Fields for saving the original values of flags.
220  bool shuffle_;
225 
226 // Converts a Unicode code point to a narrow string in UTF-8 encoding.
227 // code_point parameter is of type UInt32 because wchar_t may not be
228 // wide enough to contain a code point.
229 // If the code_point is not a valid Unicode code point
230 // (i.e. outside of Unicode range U+0 to U+10FFFF) it will be converted
231 // to "(Invalid Unicode 0xXXXXXXXX)".
233 
234 // Converts a wide string to a narrow string in UTF-8 encoding.
235 // The wide string is assumed to have the following encoding:
236 // UTF-16 if sizeof(wchar_t) == 2 (on Windows, Cygwin, Symbian OS)
237 // UTF-32 if sizeof(wchar_t) == 4 (on Linux)
238 // Parameter str points to a null-terminated wide string.
239 // Parameter num_chars may additionally limit the number
240 // of wchar_t characters processed. -1 is used when the entire string
241 // should be processed.
242 // If the string contains code points that are not valid Unicode code points
243 // (i.e. outside of Unicode range U+0 to U+10FFFF) they will be output
244 // as '(Invalid Unicode 0xXXXXXXXX)'. If the string is in UTF16 encoding
245 // and contains invalid UTF-16 surrogate pairs, values in those pairs
246 // will be encoded as individual Unicode characters from Basic Normal Plane.
247 GTEST_API_ std::string WideStringToUtf8(const wchar_t* str, int num_chars);
248 
249 // Reads the GTEST_SHARD_STATUS_FILE environment variable, and creates the file
250 // if the variable is present. If a file already exists at this location, this
251 // function will write over it. If the variable is present, but the file cannot
252 // be created, prints an error and exits.
254 
255 // Checks whether sharding is enabled by examining the relevant
256 // environment variable values. If the variables are present,
257 // but inconsistent (e.g., shard_index >= total_shards), prints
258 // an error and exits. If in_subprocess_for_death_test, sharding is
259 // disabled because it must only be applied to the original test
260 // process. Otherwise, we could filter out death tests we intended to execute.
261 GTEST_API_ bool ShouldShard(const char* total_shards_str,
262  const char* shard_index_str,
263  bool in_subprocess_for_death_test);
264 
265 // Parses the environment variable var as an Int32. If it is unset,
266 // returns default_val. If it is not an Int32, prints an error and
267 // and aborts.
268 GTEST_API_ Int32 Int32FromEnvOrDie(const char* env_var, Int32 default_val);
269 
270 // Given the total number of shards, the shard index, and the test id,
271 // returns true iff the test should be run on this shard. The test id is
272 // some arbitrary but unique non-negative integer assigned to each test
273 // method. Assumes that 0 <= shard_index < total_shards.
275  int total_shards, int shard_index, int test_id);
276 
277 // STL container utilities.
278 
279 // Returns the number of elements in the given container that satisfy
280 // the given predicate.
281 template <class Container, typename Predicate>
282 inline int CountIf(const Container& c, Predicate predicate) {
283  // Implemented as an explicit loop since std::count_if() in libCstd on
284  // Solaris has a non-standard signature.
285  int count = 0;
286  for (typename Container::const_iterator it = c.begin(); it != c.end(); ++it) {
287  if (predicate(*it))
288  ++count;
289  }
290  return count;
291 }
292 
293 // Applies a function/functor to each element in the container.
294 template <class Container, typename Functor>
295 void ForEach(const Container& c, Functor functor) {
296  std::for_each(c.begin(), c.end(), functor);
297 }
298 
299 // Returns the i-th element of the vector, or default_value if i is not
300 // in range [0, v.size()).
301 template <typename E>
302 inline E GetElementOr(const std::vector<E>& v, int i, E default_value) {
303  return (i < 0 || i >= static_cast<int>(v.size())) ? default_value : v[i];
304 }
305 
306 // Performs an in-place shuffle of a range of the vector's elements.
307 // 'begin' and 'end' are element indices as an STL-style range;
308 // i.e. [begin, end) are shuffled, where 'end' == size() means to
309 // shuffle to the end of the vector.
310 template <typename E>
311 void ShuffleRange(internal::Random* random, int begin, int end,
312  std::vector<E>* v) {
313  const int size = static_cast<int>(v->size());
314  GTEST_CHECK_(0 <= begin && begin <= size)
315  << "Invalid shuffle range start " << begin << ": must be in range [0, "
316  << size << "].";
317  GTEST_CHECK_(begin <= end && end <= size)
318  << "Invalid shuffle range finish " << end << ": must be in range ["
319  << begin << ", " << size << "].";
320 
321  // Fisher-Yates shuffle, from
322  // http://en.wikipedia.org/wiki/Fisher-Yates_shuffle
323  for (int range_width = end - begin; range_width >= 2; range_width--) {
324  const int last_in_range = begin + range_width - 1;
325  const int selected = begin + random->Generate(range_width);
326  std::swap((*v)[selected], (*v)[last_in_range]);
327  }
328 }
329 
330 // Performs an in-place shuffle of the vector's elements.
331 template <typename E>
332 inline void Shuffle(internal::Random* random, std::vector<E>* v) {
333  ShuffleRange(random, 0, static_cast<int>(v->size()), v);
334 }
335 
336 // A function for deleting an object. Handy for being used as a
337 // functor.
338 template <typename T>
339 static void Delete(T* x) {
340  delete x;
341 }
342 
343 // A predicate that checks the key of a TestProperty against a known key.
344 //
345 // TestPropertyKeyIs is copyable.
347  public:
348  // Constructor.
349  //
350  // TestPropertyKeyIs has NO default constructor.
351  explicit TestPropertyKeyIs(const std::string& key) : key_(key) {}
352 
353  // Returns true iff the test name of test property matches on key_.
354  bool operator()(const TestProperty& test_property) const {
355  return test_property.key() == key_;
356  }
357 
358  private:
360 };
361 
362 // Class UnitTestOptions.
363 //
364 // This class contains functions for processing options the user
365 // specifies when running the tests. It has only static members.
366 //
367 // In most cases, the user can specify an option using either an
368 // environment variable or a command line flag. E.g. you can set the
369 // test filter using either GTEST_FILTER or --gtest_filter. If both
370 // the variable and the flag are present, the latter overrides the
371 // former.
373  public:
374  // Functions for processing the gtest_output flag.
375 
376  // Returns the output format, or "" for normal printed output.
377  static std::string GetOutputFormat();
378 
379  // Returns the absolute path of the requested output file, or the
380  // default (test_detail.xml in the original working directory) if
381  // none was explicitly specified.
382  static std::string GetAbsolutePathToOutputFile();
383 
384  // Functions for processing the gtest_filter flag.
385 
386  // Returns true iff the wildcard pattern matches the string. The
387  // first ':' or '\0' character in pattern marks the end of it.
388  //
389  // This recursive algorithm isn't very efficient, but is clear and
390  // works well enough for matching test names, which are short.
391  static bool PatternMatchesString(const char *pattern, const char *str);
392 
393  // Returns true iff the user-specified filter matches the test case
394  // name and the test name.
395  static bool FilterMatchesTest(const std::string &test_case_name,
396  const std::string &test_name);
397 
398 #if GTEST_OS_WINDOWS
399  // Function for supporting the gtest_catch_exception flag.
400 
401  // Returns EXCEPTION_EXECUTE_HANDLER if Google Test should handle the
402  // given SEH exception, or EXCEPTION_CONTINUE_SEARCH otherwise.
403  // This function is useful as an __except condition.
404  static int GTestShouldProcessSEH(DWORD exception_code);
405 #endif // GTEST_OS_WINDOWS
406 
407  // Returns true if "name" matches the ':' separated list of glob-style
408  // filters in "filter".
409  static bool MatchesFilter(const std::string& name, const char* filter);
410 };
411 
412 // Returns the current application's name, removing directory path if that
413 // is present. Used by UnitTestOptions::GetOutputFile.
415 
416 // The role interface for getting the OS stack trace as a string.
418  public:
421 
422  // Returns the current OS stack trace as an std::string. Parameters:
423  //
424  // max_depth - the maximum number of stack frames to be included
425  // in the trace.
426  // skip_count - the number of top frames to be skipped; doesn't count
427  // against max_depth.
428  virtual string CurrentStackTrace(int max_depth, int skip_count) = 0;
429 
430  // UponLeavingGTest() should be called immediately before Google Test calls
431  // user code. It saves some information about the current stack that
432  // CurrentStackTrace() will use to find and hide Google Test stack frames.
433  virtual void UponLeavingGTest() = 0;
434 
435  private:
437 };
438 
439 // A working implementation of the OsStackTraceGetterInterface interface.
441  public:
443 
444  virtual string CurrentStackTrace(int max_depth, int skip_count)
446 
448 
449  // This string is inserted in place of stack frames that are part of
450  // Google Test's implementation.
451  static const char* const kElidedFramesMarker;
452 
453  private:
454  Mutex mutex_; // protects all internal state
455 
456  // We save the stack frame below the frame that calls user code.
457  // We do this because the address of the frame immediately below
458  // the user code changes between the call to UponLeavingGTest()
459  // and any calls to CurrentStackTrace() from within the user code.
461 
463 };
464 
465 // Information about a Google Test trace point.
466 struct TraceInfo {
467  const char* file;
468  int line;
470 };
471 
472 // This is the default global test part result reporter used in UnitTestImpl.
473 // This class should only be used by UnitTestImpl.
476  public:
478  // Implements the TestPartResultReporterInterface. Reports the test part
479  // result in the current test.
480  virtual void ReportTestPartResult(const TestPartResult& result);
481 
482  private:
484 
486 };
487 
488 // This is the default per thread test part result reporter used in
489 // UnitTestImpl. This class should only be used by UnitTestImpl.
492  public:
494  // Implements the TestPartResultReporterInterface. The implementation just
495  // delegates to the current global test part result reporter of *unit_test_.
496  virtual void ReportTestPartResult(const TestPartResult& result);
497 
498  private:
500 
502 };
503 
504 // The private implementation of the UnitTest class. We don't protect
505 // the methods under a mutex, as this class is not accessible by a
506 // user and the UnitTest class that delegates work to this class does
507 // proper locking.
509  public:
510  explicit UnitTestImpl(UnitTest* parent);
511  virtual ~UnitTestImpl();
512 
513  // There are two different ways to register your own TestPartResultReporter.
514  // You can register your own repoter to listen either only for test results
515  // from the current thread or for results from all threads.
516  // By default, each per-thread test result repoter just passes a new
517  // TestPartResult to the global test result reporter, which registers the
518  // test part result for the currently running test.
519 
520  // Returns the global test part result reporter.
521  TestPartResultReporterInterface* GetGlobalTestPartResultReporter();
522 
523  // Sets the global test part result reporter.
524  void SetGlobalTestPartResultReporter(
526 
527  // Returns the test part result reporter for the current thread.
528  TestPartResultReporterInterface* GetTestPartResultReporterForCurrentThread();
529 
530  // Sets the test part result reporter for the current thread.
531  void SetTestPartResultReporterForCurrentThread(
533 
534  // Gets the number of successful test cases.
535  int successful_test_case_count() const;
536 
537  // Gets the number of failed test cases.
538  int failed_test_case_count() const;
539 
540  // Gets the number of all test cases.
541  int total_test_case_count() const;
542 
543  // Gets the number of all test cases that contain at least one test
544  // that should run.
545  int test_case_to_run_count() const;
546 
547  // Gets the number of successful tests.
548  int successful_test_count() const;
549 
550  // Gets the number of failed tests.
551  int failed_test_count() const;
552 
553  // Gets the number of disabled tests that will be reported in the XML report.
554  int reportable_disabled_test_count() const;
555 
556  // Gets the number of disabled tests.
557  int disabled_test_count() const;
558 
559  // Gets the number of tests to be printed in the XML report.
560  int reportable_test_count() const;
561 
562  // Gets the number of all tests.
563  int total_test_count() const;
564 
565  // Gets the number of tests that should run.
566  int test_to_run_count() const;
567 
568  // Gets the time of the test program start, in ms from the start of the
569  // UNIX epoch.
570  TimeInMillis start_timestamp() const { return start_timestamp_; }
571 
572  // Gets the elapsed time, in milliseconds.
573  TimeInMillis elapsed_time() const { return elapsed_time_; }
574 
575  // Returns true iff the unit test passed (i.e. all test cases passed).
576  bool Passed() const { return !Failed(); }
577 
578  // Returns true iff the unit test failed (i.e. some test case failed
579  // or something outside of all tests failed).
580  bool Failed() const {
581  return failed_test_case_count() > 0 || ad_hoc_test_result()->Failed();
582  }
583 
584  // Gets the i-th test case among all the test cases. i can range from 0 to
585  // total_test_case_count() - 1. If i is not in that range, returns NULL.
586  const TestCase* GetTestCase(int i) const {
587  const int index = GetElementOr(test_case_indices_, i, -1);
588  return index < 0 ? NULL : test_cases_[i];
589  }
590 
591  // Gets the i-th test case among all the test cases. i can range from 0 to
592  // total_test_case_count() - 1. If i is not in that range, returns NULL.
594  const int index = GetElementOr(test_case_indices_, i, -1);
595  return index < 0 ? NULL : test_cases_[index];
596  }
597 
598  // Provides access to the event listener list.
599  TestEventListeners* listeners() { return &listeners_; }
600 
601  // Returns the TestResult for the test that's currently running, or
602  // the TestResult for the ad hoc test if no test is running.
603  TestResult* current_test_result();
604 
605  // Returns the TestResult for the ad hoc test.
606  const TestResult* ad_hoc_test_result() const { return &ad_hoc_test_result_; }
607 
608  // Sets the OS stack trace getter.
609  //
610  // Does nothing if the input and the current OS stack trace getter
611  // are the same; otherwise, deletes the old getter and makes the
612  // input the current getter.
613  void set_os_stack_trace_getter(OsStackTraceGetterInterface* getter);
614 
615  // Returns the current OS stack trace getter if it is not NULL;
616  // otherwise, creates an OsStackTraceGetter, makes it the current
617  // getter, and returns it.
618  OsStackTraceGetterInterface* os_stack_trace_getter();
619 
620  // Returns the current OS stack trace as an std::string.
621  //
622  // The maximum number of stack frames to be included is specified by
623  // the gtest_stack_trace_depth flag. The skip_count parameter
624  // specifies the number of top frames to be skipped, which doesn't
625  // count against the number of frames to be included.
626  //
627  // For example, if Foo() calls Bar(), which in turn calls
628  // CurrentOsStackTraceExceptTop(1), Foo() will be included in the
629  // trace but Bar() and CurrentOsStackTraceExceptTop() won't.
630  std::string CurrentOsStackTraceExceptTop(int skip_count) GTEST_NO_INLINE_;
631 
632  // Finds and returns a TestCase with the given name. If one doesn't
633  // exist, creates one and returns it.
634  //
635  // Arguments:
636  //
637  // test_case_name: name of the test case
638  // type_param: the name of the test's type parameter, or NULL if
639  // this is not a typed or a type-parameterized test.
640  // set_up_tc: pointer to the function that sets up the test case
641  // tear_down_tc: pointer to the function that tears down the test case
642  TestCase* GetTestCase(const char* test_case_name,
643  const char* type_param,
644  Test::SetUpTestCaseFunc set_up_tc,
645  Test::TearDownTestCaseFunc tear_down_tc);
646 
647  // Adds a TestInfo to the unit test.
648  //
649  // Arguments:
650  //
651  // set_up_tc: pointer to the function that sets up the test case
652  // tear_down_tc: pointer to the function that tears down the test case
653  // test_info: the TestInfo object
655  Test::TearDownTestCaseFunc tear_down_tc,
656  TestInfo* test_info) {
657  // In order to support thread-safe death tests, we need to
658  // remember the original working directory when the test program
659  // was first invoked. We cannot do this in RUN_ALL_TESTS(), as
660  // the user may have changed the current directory before calling
661  // RUN_ALL_TESTS(). Therefore we capture the current directory in
662  // AddTestInfo(), which is called to register a TEST or TEST_F
663  // before main() is reached.
664  if (original_working_dir_.IsEmpty()) {
665  original_working_dir_.Set(FilePath::GetCurrentDir());
666  GTEST_CHECK_(!original_working_dir_.IsEmpty())
667  << "Failed to get the current working directory.";
668  }
669 
670  GetTestCase(test_info->test_case_name(),
671  test_info->type_param(),
672  set_up_tc,
673  tear_down_tc)->AddTestInfo(test_info);
674  }
675 
676 #if GTEST_HAS_PARAM_TEST
677  // Returns ParameterizedTestCaseRegistry object used to keep track of
678  // value-parameterized tests and instantiate and register them.
679  internal::ParameterizedTestCaseRegistry& parameterized_test_registry() {
680  return parameterized_test_registry_;
681  }
682 #endif // GTEST_HAS_PARAM_TEST
683 
684  // Sets the TestCase object for the test that's currently running.
685  void set_current_test_case(TestCase* a_current_test_case) {
686  current_test_case_ = a_current_test_case;
687  }
688 
689  // Sets the TestInfo object for the test that's currently running. If
690  // current_test_info is NULL, the assertion results will be stored in
691  // ad_hoc_test_result_.
692  void set_current_test_info(TestInfo* a_current_test_info) {
693  current_test_info_ = a_current_test_info;
694  }
695 
696  // Registers all parameterized tests defined using TEST_P and
697  // INSTANTIATE_TEST_CASE_P, creating regular tests for each test/parameter
698  // combination. This method can be called more then once; it has guards
699  // protecting from registering the tests more then once. If
700  // value-parameterized tests are disabled, RegisterParameterizedTests is
701  // present but does nothing.
702  void RegisterParameterizedTests();
703 
704  // Runs all tests in this UnitTest object, prints the result, and
705  // returns true if all tests are successful. If any exception is
706  // thrown during a test, this test is considered to be failed, but
707  // the rest of the tests will still be run.
708  bool RunAllTests();
709 
710  // Clears the results of all tests, except the ad hoc tests.
713  }
714 
715  // Clears the results of ad-hoc test assertions.
717  ad_hoc_test_result_.Clear();
718  }
719 
720  // Adds a TestProperty to the current TestResult object when invoked in a
721  // context of a test or a test case, or to the global property set. If the
722  // result already contains a property with the same key, the value will be
723  // updated.
724  void RecordProperty(const TestProperty& test_property);
725 
728  IGNORE_SHARDING_PROTOCOL
729  };
730 
731  // Matches the full name of each test against the user-specified
732  // filter to decide whether the test should run, then records the
733  // result in each TestCase and TestInfo object.
734  // If shard_tests == HONOR_SHARDING_PROTOCOL, further filters tests
735  // based on sharding variables in the environment.
736  // Returns the number of tests that should run.
737  int FilterTests(ReactionToSharding shard_tests);
738 
739  // Prints the names of the tests matching the user-specified filter flag.
740  void ListTestsMatchingFilter();
741 
742  const TestCase* current_test_case() const { return current_test_case_; }
743  TestInfo* current_test_info() { return current_test_info_; }
744  const TestInfo* current_test_info() const { return current_test_info_; }
745 
746  // Returns the vector of environments that need to be set-up/torn-down
747  // before/after the tests are run.
748  std::vector<Environment*>& environments() { return environments_; }
749 
750  // Getters for the per-thread Google Test trace stack.
751  std::vector<TraceInfo>& gtest_trace_stack() {
752  return *(gtest_trace_stack_.pointer());
753  }
754  const std::vector<TraceInfo>& gtest_trace_stack() const {
755  return gtest_trace_stack_.get();
756  }
757 
758 #if GTEST_HAS_DEATH_TEST
759  void InitDeathTestSubprocessControlInfo() {
760  internal_run_death_test_flag_.reset(ParseInternalRunDeathTestFlag());
761  }
762  // Returns a pointer to the parsed --gtest_internal_run_death_test
763  // flag, or NULL if that flag was not specified.
764  // This information is useful only in a death test child process.
765  // Must not be called before a call to InitGoogleTest.
766  const InternalRunDeathTestFlag* internal_run_death_test_flag() const {
767  return internal_run_death_test_flag_.get();
768  }
769 
770  // Returns a pointer to the current death test factory.
771  internal::DeathTestFactory* death_test_factory() {
772  return death_test_factory_.get();
773  }
774 
775  void SuppressTestEventsIfInSubprocess();
776 
777  friend class ReplaceDeathTestFactory;
778 #endif // GTEST_HAS_DEATH_TEST
779 
780  // Initializes the event listener performing XML output as specified by
781  // UnitTestOptions. Must not be called before InitGoogleTest.
782  void ConfigureXmlOutput();
783 
784 #if GTEST_CAN_STREAM_RESULTS_
785  // Initializes the event listener for streaming test results to a socket.
786  // Must not be called before InitGoogleTest.
787  void ConfigureStreamingOutput();
788 #endif
789 
790  // Performs initialization dependent upon flag values obtained in
791  // ParseGoogleTestFlagsOnly. Is called from InitGoogleTest after the call to
792  // ParseGoogleTestFlagsOnly. In case a user neglects to call InitGoogleTest
793  // this function is also called from RunAllTests. Since this function can be
794  // called more than once, it has to be idempotent.
795  void PostFlagParsingInit();
796 
797  // Gets the random seed used at the start of the current test iteration.
798  int random_seed() const { return random_seed_; }
799 
800  // Gets the random number generator.
801  internal::Random* random() { return &random_; }
802 
803  // Shuffles all test cases, and the tests within each test case,
804  // making sure that death tests are still run first.
805  void ShuffleTests();
806 
807  // Restores the test cases and tests to their order before the first shuffle.
808  void UnshuffleTests();
809 
810  // Returns the value of GTEST_FLAG(catch_exceptions) at the moment
811  // UnitTest::Run() starts.
812  bool catch_exceptions() const { return catch_exceptions_; }
813 
814  private:
815  friend class ::testing::UnitTest;
816 
817  // Used by UnitTest::Run() to capture the state of
818  // GTEST_FLAG(catch_exceptions) at the moment it starts.
819  void set_catch_exceptions(bool value) { catch_exceptions_ = value; }
820 
821  // The UnitTest object that owns this implementation object.
823 
824  // The working directory when the first TEST() or TEST_F() was
825  // executed.
827 
828  // The default test part result reporters.
832 
833  // Points to (but doesn't own) the global test part result reporter.
835 
836  // Protects read and write access to global_test_part_result_reporter_.
838 
839  // Points to (but doesn't own) the per-thread test part result reporter.
842 
843  // The vector of environments that need to be set-up/torn-down
844  // before/after the tests are run.
845  std::vector<Environment*> environments_;
846 
847  // The vector of TestCases in their original order. It owns the
848  // elements in the vector.
849  std::vector<TestCase*> test_cases_;
850 
851  // Provides a level of indirection for the test case list to allow
852  // easy shuffling and restoring the test case order. The i-th
853  // element of this vector is the index of the i-th test case in the
854  // shuffled order.
855  std::vector<int> test_case_indices_;
856 
857 #if GTEST_HAS_PARAM_TEST
858  // ParameterizedTestRegistry object used to register value-parameterized
859  // tests.
860  internal::ParameterizedTestCaseRegistry parameterized_test_registry_;
861 
862  // Indicates whether RegisterParameterizedTests() has been called already.
863  bool parameterized_tests_registered_;
864 #endif // GTEST_HAS_PARAM_TEST
865 
866  // Index of the last death test case registered. Initially -1.
868 
869  // This points to the TestCase for the currently running test. It
870  // changes as Google Test goes through one test case after another.
871  // When no test is running, this is set to NULL and Google Test
872  // stores assertion results in ad_hoc_test_result_. Initially NULL.
874 
875  // This points to the TestInfo for the currently running test. It
876  // changes as Google Test goes through one test after another. When
877  // no test is running, this is set to NULL and Google Test stores
878  // assertion results in ad_hoc_test_result_. Initially NULL.
880 
881  // Normally, a user only writes assertions inside a TEST or TEST_F,
882  // or inside a function called by a TEST or TEST_F. Since Google
883  // Test keeps track of which test is current running, it can
884  // associate such an assertion with the test it belongs to.
885  //
886  // If an assertion is encountered when no TEST or TEST_F is running,
887  // Google Test attributes the assertion result to an imaginary "ad hoc"
888  // test, and records the result in ad_hoc_test_result_.
890 
891  // The list of event listeners that can be used to track events inside
892  // Google Test.
894 
895  // The OS stack trace getter. Will be deleted when the UnitTest
896  // object is destructed. By default, an OsStackTraceGetter is used,
897  // but the user can set this field to use a custom getter if that is
898  // desired.
900 
901  // True iff PostFlagParsingInit() has been called.
903 
904  // The random number seed used at the beginning of the test run.
906 
907  // Our random number generator.
909 
910  // The time of the test program start, in ms from the start of the
911  // UNIX epoch.
913 
914  // How long the test took to run, in milliseconds.
916 
917 #if GTEST_HAS_DEATH_TEST
918  // The decomposed components of the gtest_internal_run_death_test flag,
919  // parsed when RUN_ALL_TESTS is called.
920  internal::scoped_ptr<InternalRunDeathTestFlag> internal_run_death_test_flag_;
922 #endif // GTEST_HAS_DEATH_TEST
923 
924  // A per-thread stack of traces created by the SCOPED_TRACE() macro.
926 
927  // The value of GTEST_FLAG(catch_exceptions) at the moment RunAllTests()
928  // starts.
930 
932 }; // class UnitTestImpl
933 
934 // Convenience function for accessing the global UnitTest
935 // implementation object.
937  return UnitTest::GetInstance()->impl();
938 }
939 
940 #if GTEST_USES_SIMPLE_RE
941 
942 // Internal helper functions for implementing the simple regular
943 // expression matcher.
944 GTEST_API_ bool IsInSet(char ch, const char* str);
945 GTEST_API_ bool IsAsciiDigit(char ch);
946 GTEST_API_ bool IsAsciiPunct(char ch);
947 GTEST_API_ bool IsRepeat(char ch);
948 GTEST_API_ bool IsAsciiWhiteSpace(char ch);
949 GTEST_API_ bool IsAsciiWordChar(char ch);
950 GTEST_API_ bool IsValidEscape(char ch);
951 GTEST_API_ bool AtomMatchesChar(bool escaped, char pattern, char ch);
952 GTEST_API_ bool ValidateRegex(const char* regex);
953 GTEST_API_ bool MatchRegexAtHead(const char* regex, const char* str);
954 GTEST_API_ bool MatchRepetitionAndRegexAtHead(
955  bool escaped, char ch, char repeat, const char* regex, const char* str);
956 GTEST_API_ bool MatchRegexAnywhere(const char* regex, const char* str);
957 
958 #endif // GTEST_USES_SIMPLE_RE
959 
960 // Parses the command line for Google Test flags, without initializing
961 // other parts of Google Test.
962 GTEST_API_ void ParseGoogleTestFlagsOnly(int* argc, char** argv);
963 GTEST_API_ void ParseGoogleTestFlagsOnly(int* argc, wchar_t** argv);
964 
965 #if GTEST_HAS_DEATH_TEST
966 
967 // Returns the message describing the last system error, regardless of the
968 // platform.
969 GTEST_API_ std::string GetLastErrnoDescription();
970 
971 # if GTEST_OS_WINDOWS
972 // Provides leak-safe Windows kernel handle ownership.
973 class AutoHandle {
974  public:
975  AutoHandle() : handle_(INVALID_HANDLE_VALUE) {}
976  explicit AutoHandle(HANDLE handle) : handle_(handle) {}
977 
978  ~AutoHandle() { Reset(); }
979 
980  HANDLE Get() const { return handle_; }
981  void Reset() { Reset(INVALID_HANDLE_VALUE); }
982  void Reset(HANDLE handle) {
983  if (handle != handle_) {
984  if (handle_ != INVALID_HANDLE_VALUE)
985  ::CloseHandle(handle_);
986  handle_ = handle;
987  }
988  }
989 
990  private:
991  HANDLE handle_;
992 
994 };
995 # endif // GTEST_OS_WINDOWS
996 
997 // Attempts to parse a string into a positive integer pointed to by the
998 // number parameter. Returns true if that is possible.
999 // GTEST_HAS_DEATH_TEST implies that we have ::std::string, so we can use
1000 // it here.
1001 template <typename Integer>
1002 bool ParseNaturalNumber(const ::std::string& str, Integer* number) {
1003  // Fail fast if the given string does not begin with a digit;
1004  // this bypasses strtoXXX's "optional leading whitespace and plus
1005  // or minus sign" semantics, which are undesirable here.
1006  if (str.empty() || !IsDigit(str[0])) {
1007  return false;
1008  }
1009  errno = 0;
1010 
1011  char* end;
1012  // BiggestConvertible is the largest integer type that system-provided
1013  // string-to-number conversion routines can return.
1014 
1015 # if GTEST_OS_WINDOWS && !defined(__GNUC__)
1016 
1017  // MSVC and C++ Builder define __int64 instead of the standard long long.
1018  typedef unsigned __int64 BiggestConvertible;
1019  const BiggestConvertible parsed = _strtoui64(str.c_str(), &end, 10);
1020 
1021 # else
1022 
1023  typedef unsigned long long BiggestConvertible; // NOLINT
1024  const BiggestConvertible parsed = strtoull(str.c_str(), &end, 10);
1025 
1026 # endif // GTEST_OS_WINDOWS && !defined(__GNUC__)
1027 
1028  const bool parse_success = *end == '\0' && errno == 0;
1029 
1030  // TODO(vladl@google.com): Convert this to compile time assertion when it is
1031  // available.
1032  GTEST_CHECK_(sizeof(Integer) <= sizeof(parsed));
1033 
1034  const Integer result = static_cast<Integer>(parsed);
1035  if (parse_success && static_cast<BiggestConvertible>(result) == parsed) {
1036  *number = result;
1037  return true;
1038  }
1039  return false;
1040 }
1041 #endif // GTEST_HAS_DEATH_TEST
1042 
1043 // TestResult contains some private methods that should be hidden from
1044 // Google Test user but are required for testing. This class allow our tests
1045 // to access them.
1046 //
1047 // This class is supplied only for the purpose of testing Google Test's own
1048 // constructs. Do not use it in user tests, either directly or indirectly.
1050  public:
1051  static void RecordProperty(TestResult* test_result,
1052  const std::string& xml_element,
1053  const TestProperty& property) {
1054  test_result->RecordProperty(xml_element, property);
1055  }
1056 
1057  static void ClearTestPartResults(TestResult* test_result) {
1058  test_result->ClearTestPartResults();
1059  }
1060 
1061  static const std::vector<testing::TestPartResult>& test_part_results(
1062  const TestResult& test_result) {
1063  return test_result.test_part_results();
1064  }
1065 };
1066 
1067 #if GTEST_CAN_STREAM_RESULTS_
1068 
1069 // Streams test results to the given port on the given host machine.
1070 class StreamingListener : public EmptyTestEventListener {
1071  public:
1072  // Abstract base class for writing strings to a socket.
1073  class AbstractSocketWriter {
1074  public:
1075  virtual ~AbstractSocketWriter() {}
1076 
1077  // Sends a string to the socket.
1078  virtual void Send(const string& message) = 0;
1079 
1080  // Closes the socket.
1081  virtual void CloseConnection() {}
1082 
1083  // Sends a string and a newline to the socket.
1084  void SendLn(const string& message) {
1085  Send(message + "\n");
1086  }
1087  };
1088 
1089  // Concrete class for actually writing strings to a socket.
1090  class SocketWriter : public AbstractSocketWriter {
1091  public:
1092  SocketWriter(const string& host, const string& port)
1093  : sockfd_(-1), host_name_(host), port_num_(port) {
1094  MakeConnection();
1095  }
1096 
1097  virtual ~SocketWriter() {
1098  if (sockfd_ != -1)
1099  CloseConnection();
1100  }
1101 
1102  // Sends a string to the socket.
1103  virtual void Send(const string& message) {
1104  GTEST_CHECK_(sockfd_ != -1)
1105  << "Send() can be called only when there is a connection.";
1106 
1107  const int len = static_cast<int>(message.length());
1108  if (write(sockfd_, message.c_str(), len) != len) {
1109  GTEST_LOG_(WARNING)
1110  << "stream_result_to: failed to stream to "
1111  << host_name_ << ":" << port_num_;
1112  }
1113  }
1114 
1115  private:
1116  // Creates a client socket and connects to the server.
1117  void MakeConnection();
1118 
1119  // Closes the socket.
1120  void CloseConnection() {
1121  GTEST_CHECK_(sockfd_ != -1)
1122  << "CloseConnection() can be called only when there is a connection.";
1123 
1124  close(sockfd_);
1125  sockfd_ = -1;
1126  }
1127 
1128  int sockfd_; // socket file descriptor
1129  const string host_name_;
1130  const string port_num_;
1131 
1132  GTEST_DISALLOW_COPY_AND_ASSIGN_(SocketWriter);
1133  }; // class SocketWriter
1134 
1135  // Escapes '=', '&', '%', and '\n' characters in str as "%xx".
1136  static string UrlEncode(const char* str);
1137 
1138  StreamingListener(const string& host, const string& port)
1139  : socket_writer_(new SocketWriter(host, port)) { Start(); }
1140 
1141  explicit StreamingListener(AbstractSocketWriter* socket_writer)
1142  : socket_writer_(socket_writer) { Start(); }
1143 
1144  void OnTestProgramStart(const UnitTest& /* unit_test */) {
1145  SendLn("event=TestProgramStart");
1146  }
1147 
1148  void OnTestProgramEnd(const UnitTest& unit_test) {
1149  // Note that Google Test current only report elapsed time for each
1150  // test iteration, not for the entire test program.
1151  SendLn("event=TestProgramEnd&passed=" + FormatBool(unit_test.Passed()));
1152 
1153  // Notify the streaming server to stop.
1154  socket_writer_->CloseConnection();
1155  }
1156 
1157  void OnTestIterationStart(const UnitTest& /* unit_test */, int iteration) {
1158  SendLn("event=TestIterationStart&iteration=" +
1159  StreamableToString(iteration));
1160  }
1161 
1162  void OnTestIterationEnd(const UnitTest& unit_test, int /* iteration */) {
1163  SendLn("event=TestIterationEnd&passed=" +
1164  FormatBool(unit_test.Passed()) + "&elapsed_time=" +
1165  StreamableToString(unit_test.elapsed_time()) + "ms");
1166  }
1167 
1168  void OnTestCaseStart(const TestCase& test_case) {
1169  SendLn(std::string("event=TestCaseStart&name=") + test_case.name());
1170  }
1171 
1172  void OnTestCaseEnd(const TestCase& test_case) {
1173  SendLn("event=TestCaseEnd&passed=" + FormatBool(test_case.Passed())
1174  + "&elapsed_time=" + StreamableToString(test_case.elapsed_time())
1175  + "ms");
1176  }
1177 
1178  void OnTestStart(const TestInfo& test_info) {
1179  SendLn(std::string("event=TestStart&name=") + test_info.name());
1180  }
1181 
1182  void OnTestEnd(const TestInfo& test_info) {
1183  SendLn("event=TestEnd&passed=" +
1184  FormatBool((test_info.result())->Passed()) +
1185  "&elapsed_time=" +
1186  StreamableToString((test_info.result())->elapsed_time()) + "ms");
1187  }
1188 
1189  void OnTestPartResult(const TestPartResult& test_part_result) {
1190  const char* file_name = test_part_result.file_name();
1191  if (file_name == NULL)
1192  file_name = "";
1193  SendLn("event=TestPartResult&file=" + UrlEncode(file_name) +
1194  "&line=" + StreamableToString(test_part_result.line_number()) +
1195  "&message=" + UrlEncode(test_part_result.message()));
1196  }
1197 
1198  private:
1199  // Sends the given message and a newline to the socket.
1200  void SendLn(const string& message) { socket_writer_->SendLn(message); }
1201 
1202  // Called at the start of streaming to notify the receiver what
1203  // protocol we are using.
1204  void Start() { SendLn("gtest_streaming_protocol_version=1.0"); }
1205 
1206  string FormatBool(bool value) { return value ? "1" : "0"; }
1207 
1208  const scoped_ptr<AbstractSocketWriter> socket_writer_;
1209 
1210  GTEST_DISALLOW_COPY_AND_ASSIGN_(StreamingListener);
1211 }; // class StreamingListener
1212 
1213 #endif // GTEST_CAN_STREAM_RESULTS_
1214 
1215 } // namespace internal
1216 } // namespace testing
1217 
1218 #endif // GTEST_SRC_GTEST_INTERNAL_INL_H_
testing::internal::UnitTestImpl::global_test_part_result_repoter_
TestPartResultReporterInterface * global_test_part_result_repoter_
Definition: gtest-internal-inl.h:834
testing::internal::OsStackTraceGetterInterface::CurrentStackTrace
virtual string CurrentStackTrace(int max_depth, int skip_count)=0
testing::internal::UnitTestImpl::parent_
UnitTest *const parent_
Definition: gtest-internal-inl.h:822
testing
Definition: gtest-death-test.h:43
testing::internal::DefaultGlobalTestPartResultReporter
Definition: gtest-internal-inl.h:474
testing::internal::kStreamResultToFlag
const char kStreamResultToFlag[]
Definition: gtest-internal-inl.h:101
testing::internal::TestResultAccessor
Definition: gtest-internal-inl.h:1049
testing::internal::UnitTestImpl::AddTestInfo
void AddTestInfo(Test::SetUpTestCaseFunc set_up_tc, Test::TearDownTestCaseFunc tear_down_tc, TestInfo *test_info)
Definition: gtest-internal-inl.h:654
testing::TestPartResult
Definition: gtest-test-part.h:47
gtest-spi.h
testing::internal::Delete
static void Delete(T *x)
Definition: gtest-internal-inl.h:339
testing::internal::UnitTestImpl::ClearNonAdHocTestResult
void ClearNonAdHocTestResult()
Definition: gtest-internal-inl.h:711
testing::TestInfo
Definition: gtest.h:621
GTEST_LOG_
#define GTEST_LOG_(severity)
Definition: gtest-port.h:1042
testing::internal::ShouldRunTestOnShard
GTEST_API_ bool ShouldRunTestOnShard(int total_shards, int shard_index, int test_id)
Definition: gtest.cc:4447
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GTEST_API_ Int32 Int32FromEnvOrDie(const char *env_var, Int32 default_val)
Definition: gtest.cc:4429
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@ HONOR_SHARDING_PROTOCOL
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testing::internal::OsStackTraceGetter::kElidedFramesMarker
static const char *const kElidedFramesMarker
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Definition: gtest-port.h:1548
testing::internal::DefaultPerThreadTestPartResultReporter
Definition: gtest-internal-inl.h:490
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internal::Int32 random_seed_
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TestEventListeners * listeners()
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const char kListTestsFlag[]
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bool IsDigit(char ch)
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testing::GTEST_DECLARE_bool_
GTEST_DECLARE_bool_(also_run_disabled_tests)
testing::internal::UnitTestImpl::ad_hoc_test_result_
TestResult ad_hoc_test_result_
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Definition: gtest.h:500
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internal::UnitTestImpl * impl()
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const TestCase * current_test_case() const
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void RecordProperty(const std::string &xml_element, const TestProperty &test_property)
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virtual string CurrentStackTrace(int max_depth, int skip_count) GTEST_LOCK_EXCLUDED_(mutex_)
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class UnitTestImpl * GetUnitTestImpl()
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autogenerated on Wed Feb 17 2021 03:40:07