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29
30// Utility functions and classes used by the Google C++ testing framework.//
31// This file contains purely Google Test's internal implementation. Please
32// DO NOT #INCLUDE IT IN A USER PROGRAM.
33
34#ifndef GTEST_SRC_GTEST_INTERNAL_INL_H_
35#define GTEST_SRC_GTEST_INTERNAL_INL_H_
36
37#ifndef _WIN32_WCE
38# include <errno.h>
39#endif // !_WIN32_WCE
40#include <stddef.h>
41#include <stdlib.h> // For strtoll/_strtoul64/malloc/free.
42#include <string.h> // For memmove.
43
44#include <algorithm>
45#include <memory>
46#include <string>
47#include <vector>
48
49#include "gtest/internal/gtest-port.h"
50
51#if GTEST_CAN_STREAM_RESULTS_
52# include <arpa/inet.h> // NOLINT
53# include <netdb.h> // NOLINT
54#endif
55
56#if GTEST_OS_WINDOWS
57# include <windows.h> // NOLINT
58#endif // GTEST_OS_WINDOWS
59
60#include "gtest/gtest.h"
61#include "gtest/gtest-spi.h"
62
63GTEST_DISABLE_MSC_WARNINGS_PUSH_(4251 \
64/* class A needs to have dll-interface to be used by clients of class B */)
65
66namespace testing {
67
68// Declares the flags.
69//
70// We don't want the users to modify this flag in the code, but want
71// Google Test's own unit tests to be able to access it. Therefore we
72// declare it here as opposed to in gtest.h.
73GTEST_DECLARE_bool_(death_test_use_fork);
74
75namespace internal {
76
77// The value of GetTestTypeId() as seen from within the Google Test
78// library. This is solely for testing GetTestTypeId().
79GTEST_API_ extern const TypeId kTestTypeIdInGoogleTest;
80
81// Names of the flags (needed for parsing Google Test flags).
82const char kAlsoRunDisabledTestsFlag[] = "also_run_disabled_tests";
83const char kBreakOnFailureFlag[] = "break_on_failure";
84const char kCatchExceptionsFlag[] = "catch_exceptions";
85const char kColorFlag[] = "color";
86const char kFilterFlag[] = "filter";
87const char kListTestsFlag[] = "list_tests";
88const char kOutputFlag[] = "output";
89const char kPrintTimeFlag[] = "print_time";
90const char kPrintUTF8Flag[] = "print_utf8";
91const char kRandomSeedFlag[] = "random_seed";
92const char kRepeatFlag[] = "repeat";
93const char kShuffleFlag[] = "shuffle";
94const char kStackTraceDepthFlag[] = "stack_trace_depth";
95const char kStreamResultToFlag[] = "stream_result_to";
96const char kThrowOnFailureFlag[] = "throw_on_failure";
97const char kFlagfileFlag[] = "flagfile";
98
99// A valid random seed must be in [1, kMaxRandomSeed].
100const int kMaxRandomSeed = 99999;
101
102// g_help_flag is true iff the --help flag or an equivalent form is
103// specified on the command line.
104GTEST_API_ extern bool g_help_flag;
105
106// Returns the current time in milliseconds.
107GTEST_API_ TimeInMillis GetTimeInMillis();
108
109// Returns true iff Google Test should use colors in the output.
110GTEST_API_ bool ShouldUseColor(bool stdout_is_tty);
111
112// Formats the given time in milliseconds as seconds.
113GTEST_API_ std::string FormatTimeInMillisAsSeconds(TimeInMillis ms);
114
115// Converts the given time in milliseconds to a date string in the ISO 8601
116// format, without the timezone information. N.B.: due to the use the
117// non-reentrant localtime() function, this function is not thread safe. Do
118// not use it in any code that can be called from multiple threads.
119GTEST_API_ std::string FormatEpochTimeInMillisAsIso8601(TimeInMillis ms);
120
121// Parses a string for an Int32 flag, in the form of "--flag=value".
122//
123// On success, stores the value of the flag in *value, and returns
124// true. On failure, returns false without changing *value.
125GTEST_API_ bool ParseInt32Flag(
126 const char* str, const char* flag, Int32* value);
127
128// Returns a random seed in range [1, kMaxRandomSeed] based on the
129// given --gtest_random_seed flag value.
130inline int GetRandomSeedFromFlag(Int32 random_seed_flag) {
131 const unsigned int raw_seed = (random_seed_flag == 0) ?
132 static_cast<unsigned int>(GetTimeInMillis()) :
133 static_cast<unsigned int>(random_seed_flag);
134
135 // Normalizes the actual seed to range [1, kMaxRandomSeed] such that
136 // it's easy to type.
137 const int normalized_seed =
138 static_cast<int>((raw_seed - 1U) %
139 static_cast<unsigned int>(kMaxRandomSeed)) + 1;
140 return normalized_seed;
141}
142
143// Returns the first valid random seed after 'seed'. The behavior is
144// undefined if 'seed' is invalid. The seed after kMaxRandomSeed is
145// considered to be 1.
146inline int GetNextRandomSeed(int seed) {
147 GTEST_CHECK_(1 <= seed && seed <= kMaxRandomSeed)
148 << "Invalid random seed " << seed << " - must be in [1, "
149 << kMaxRandomSeed << "].";
150 const int next_seed = seed + 1;
151 return (next_seed > kMaxRandomSeed) ? 1 : next_seed;
152}
153
154// This class saves the values of all Google Test flags in its c'tor, and
155// restores them in its d'tor.
156class GTestFlagSaver {
157 public:
158 // The c'tor.
159 GTestFlagSaver() {
160 also_run_disabled_tests_ = GTEST_FLAG(also_run_disabled_tests);
161 break_on_failure_ = GTEST_FLAG(break_on_failure);
162 catch_exceptions_ = GTEST_FLAG(catch_exceptions);
163 color_ = GTEST_FLAG(color);
164 death_test_style_ = GTEST_FLAG(death_test_style);
165 death_test_use_fork_ = GTEST_FLAG(death_test_use_fork);
166 filter_ = GTEST_FLAG(filter);
167 internal_run_death_test_ = GTEST_FLAG(internal_run_death_test);
168 list_tests_ = GTEST_FLAG(list_tests);
169 output_ = GTEST_FLAG(output);
170 print_time_ = GTEST_FLAG(print_time);
171 print_utf8_ = GTEST_FLAG(print_utf8);
172 random_seed_ = GTEST_FLAG(random_seed);
173 repeat_ = GTEST_FLAG(repeat);
174 shuffle_ = GTEST_FLAG(shuffle);
175 stack_trace_depth_ = GTEST_FLAG(stack_trace_depth);
176 stream_result_to_ = GTEST_FLAG(stream_result_to);
177 throw_on_failure_ = GTEST_FLAG(throw_on_failure);
178 }
179
180 // The d'tor is not virtual. DO NOT INHERIT FROM THIS CLASS.
181 ~GTestFlagSaver() {
182 GTEST_FLAG(also_run_disabled_tests) = also_run_disabled_tests_;
183 GTEST_FLAG(break_on_failure) = break_on_failure_;
184 GTEST_FLAG(catch_exceptions) = catch_exceptions_;
185 GTEST_FLAG(color) = color_;
186 GTEST_FLAG(death_test_style) = death_test_style_;
187 GTEST_FLAG(death_test_use_fork) = death_test_use_fork_;
188 GTEST_FLAG(filter) = filter_;
189 GTEST_FLAG(internal_run_death_test) = internal_run_death_test_;
190 GTEST_FLAG(list_tests) = list_tests_;
191 GTEST_FLAG(output) = output_;
192 GTEST_FLAG(print_time) = print_time_;
193 GTEST_FLAG(print_utf8) = print_utf8_;
194 GTEST_FLAG(random_seed) = random_seed_;
195 GTEST_FLAG(repeat) = repeat_;
196 GTEST_FLAG(shuffle) = shuffle_;
197 GTEST_FLAG(stack_trace_depth) = stack_trace_depth_;
198 GTEST_FLAG(stream_result_to) = stream_result_to_;
199 GTEST_FLAG(throw_on_failure) = throw_on_failure_;
200 }
201
202 private:
203 // Fields for saving the original values of flags.
204 bool also_run_disabled_tests_;
205 bool break_on_failure_;
206 bool catch_exceptions_;
207 std::string color_;
208 std::string death_test_style_;
209 bool death_test_use_fork_;
210 std::string filter_;
211 std::string internal_run_death_test_;
212 bool list_tests_;
213 std::string output_;
214 bool print_time_;
215 bool print_utf8_;
216 internal::Int32 random_seed_;
217 internal::Int32 repeat_;
218 bool shuffle_;
219 internal::Int32 stack_trace_depth_;
220 std::string stream_result_to_;
221 bool throw_on_failure_;
222} GTEST_ATTRIBUTE_UNUSED_;
223
224// Converts a Unicode code point to a narrow string in UTF-8 encoding.
225// code_point parameter is of type UInt32 because wchar_t may not be
226// wide enough to contain a code point.
227// If the code_point is not a valid Unicode code point
228// (i.e. outside of Unicode range U+0 to U+10FFFF) it will be converted
229// to "(Invalid Unicode 0xXXXXXXXX)".
230GTEST_API_ std::string CodePointToUtf8(UInt32 code_point);
231
232// Converts a wide string to a narrow string in UTF-8 encoding.
233// The wide string is assumed to have the following encoding:
234// UTF-16 if sizeof(wchar_t) == 2 (on Windows, Cygwin)
235// UTF-32 if sizeof(wchar_t) == 4 (on Linux)
236// Parameter str points to a null-terminated wide string.
237// Parameter num_chars may additionally limit the number
238// of wchar_t characters processed. -1 is used when the entire string
239// should be processed.
240// If the string contains code points that are not valid Unicode code points
241// (i.e. outside of Unicode range U+0 to U+10FFFF) they will be output
242// as '(Invalid Unicode 0xXXXXXXXX)'. If the string is in UTF16 encoding
243// and contains invalid UTF-16 surrogate pairs, values in those pairs
244// will be encoded as individual Unicode characters from Basic Normal Plane.
245GTEST_API_ std::string WideStringToUtf8(const wchar_t* str, int num_chars);
246
247// Reads the GTEST_SHARD_STATUS_FILE environment variable, and creates the file
248// if the variable is present. If a file already exists at this location, this
249// function will write over it. If the variable is present, but the file cannot
250// be created, prints an error and exits.
251void WriteToShardStatusFileIfNeeded();
252
253// Checks whether sharding is enabled by examining the relevant
254// environment variable values. If the variables are present,
255// but inconsistent (e.g., shard_index >= total_shards), prints
256// an error and exits. If in_subprocess_for_death_test, sharding is
257// disabled because it must only be applied to the original test
258// process. Otherwise, we could filter out death tests we intended to execute.
259GTEST_API_ bool ShouldShard(const char* total_shards_str,
260 const char* shard_index_str,
261 bool in_subprocess_for_death_test);
262
263// Parses the environment variable var as an Int32. If it is unset,
264// returns default_val. If it is not an Int32, prints an error and
265// and aborts.
266GTEST_API_ Int32 Int32FromEnvOrDie(const char* env_var, Int32 default_val);
267
268// Given the total number of shards, the shard index, and the test id,
269// returns true iff the test should be run on this shard. The test id is
270// some arbitrary but unique non-negative integer assigned to each test
271// method. Assumes that 0 <= shard_index < total_shards.
272GTEST_API_ bool ShouldRunTestOnShard(
273 int total_shards, int shard_index, int test_id);
274
275// STL container utilities.
276
277// Returns the number of elements in the given container that satisfy
278// the given predicate.
279template <class Container, typename Predicate>
280inline int CountIf(const Container& c, Predicate predicate) {
281 // Implemented as an explicit loop since std::count_if() in libCstd on
282 // Solaris has a non-standard signature.
283 int count = 0;
284 for (typename Container::const_iterator it = c.begin(); it != c.end(); ++it) {
285 if (predicate(*it))
286 ++count;
287 }
288 return count;
289}
290
291// Applies a function/functor to each element in the container.
292template <class Container, typename Functor>
293void ForEach(const Container& c, Functor functor) {
294 std::for_each(c.begin(), c.end(), functor);
295}
296
297// Returns the i-th element of the vector, or default_value if i is not
298// in range [0, v.size()).
299template <typename E>
300inline E GetElementOr(const std::vector<E>& v, int i, E default_value) {
301 return (i < 0 || i >= static_cast<int>(v.size())) ? default_value
302 : v[static_cast<size_t>(i)];
303}
304
305// Performs an in-place shuffle of a range of the vector's elements.
306// 'begin' and 'end' are element indices as an STL-style range;
307// i.e. [begin, end) are shuffled, where 'end' == size() means to
308// shuffle to the end of the vector.
309template <typename E>
310void ShuffleRange(internal::Random* random, int begin, int end,
311 std::vector<E>* v) {
312 const int size = static_cast<int>(v->size());
313 GTEST_CHECK_(0 <= begin && begin <= size)
314 << "Invalid shuffle range start " << begin << ": must be in range [0, "
315 << size << "].";
316 GTEST_CHECK_(begin <= end && end <= size)
317 << "Invalid shuffle range finish " << end << ": must be in range ["
318 << begin << ", " << size << "].";
319
320 // Fisher-Yates shuffle, from
321 // http://en.wikipedia.org/wiki/Fisher-Yates_shuffle
322 for (int range_width = end - begin; range_width >= 2; range_width--) {
323 const int last_in_range = begin + range_width - 1;
324 const int selected =
325 begin +
326 static_cast<int>(random->Generate(static_cast<UInt32>(range_width)));
327 std::swap((*v)[static_cast<size_t>(selected)],
328 (*v)[static_cast<size_t>(last_in_range)]);
329 }
330}
331
332// Performs an in-place shuffle of the vector's elements.
333template <typename E>
334inline void Shuffle(internal::Random* random, std::vector<E>* v) {
335 ShuffleRange(random, 0, static_cast<int>(v->size()), v);
336}
337
338// A function for deleting an object. Handy for being used as a
339// functor.
340template <typename T>
341static void Delete(T* x) {
342 delete x;
343}
344
345// A predicate that checks the key of a TestProperty against a known key.
346//
347// TestPropertyKeyIs is copyable.
348class TestPropertyKeyIs {
349 public:
350 // Constructor.
351 //
352 // TestPropertyKeyIs has NO default constructor.
353 explicit TestPropertyKeyIs(const std::string& key) : key_(key) {}
354
355 // Returns true iff the test name of test property matches on key_.
356 bool operator()(const TestProperty& test_property) const {
357 return test_property.key() == key_;
358 }
359
360 private:
361 std::string key_;
362};
363
364// Class UnitTestOptions.
365//
366// This class contains functions for processing options the user
367// specifies when running the tests. It has only static members.
368//
369// In most cases, the user can specify an option using either an
370// environment variable or a command line flag. E.g. you can set the
371// test filter using either GTEST_FILTER or --gtest_filter. If both
372// the variable and the flag are present, the latter overrides the
373// former.
374class GTEST_API_ UnitTestOptions {
375 public:
376 // Functions for processing the gtest_output flag.
377
378 // Returns the output format, or "" for normal printed output.
379 static std::string GetOutputFormat();
380
381 // Returns the absolute path of the requested output file, or the
382 // default (test_detail.xml in the original working directory) if
383 // none was explicitly specified.
384 static std::string GetAbsolutePathToOutputFile();
385
386 // Functions for processing the gtest_filter flag.
387
388 // Returns true iff the wildcard pattern matches the string. The
389 // first ':' or '\0' character in pattern marks the end of it.
390 //
391 // This recursive algorithm isn't very efficient, but is clear and
392 // works well enough for matching test names, which are short.
393 static bool PatternMatchesString(const char *pattern, const char *str);
394
395 // Returns true iff the user-specified filter matches the test suite
396 // name and the test name.
397 static bool FilterMatchesTest(const std::string& test_suite_name,
398 const std::string& test_name);
399
400#if GTEST_OS_WINDOWS
401 // Function for supporting the gtest_catch_exception flag.
402
403 // Returns EXCEPTION_EXECUTE_HANDLER if Google Test should handle the
404 // given SEH exception, or EXCEPTION_CONTINUE_SEARCH otherwise.
405 // This function is useful as an __except condition.
406 static int GTestShouldProcessSEH(DWORD exception_code);
407#endif // GTEST_OS_WINDOWS
408
409 // Returns true if "name" matches the ':' separated list of glob-style
410 // filters in "filter".
411 static bool MatchesFilter(const std::string& name, const char* filter);
412};
413
414// Returns the current application's name, removing directory path if that
415// is present. Used by UnitTestOptions::GetOutputFile.
416GTEST_API_ FilePath GetCurrentExecutableName();
417
418// The role interface for getting the OS stack trace as a string.
419class OsStackTraceGetterInterface {
420 public:
421 OsStackTraceGetterInterface() {}
422 virtual ~OsStackTraceGetterInterface() {}
423
424 // Returns the current OS stack trace as an std::string. Parameters:
425 //
426 // max_depth - the maximum number of stack frames to be included
427 // in the trace.
428 // skip_count - the number of top frames to be skipped; doesn't count
429 // against max_depth.
430 virtual std::string CurrentStackTrace(int max_depth, int skip_count) = 0;
431
432 // UponLeavingGTest() should be called immediately before Google Test calls
433 // user code. It saves some information about the current stack that
434 // CurrentStackTrace() will use to find and hide Google Test stack frames.
435 virtual void UponLeavingGTest() = 0;
436
437 // This string is inserted in place of stack frames that are part of
438 // Google Test's implementation.
439 static const char* const kElidedFramesMarker;
440
441 private:
442 GTEST_DISALLOW_COPY_AND_ASSIGN_(OsStackTraceGetterInterface);
443};
444
445// A working implementation of the OsStackTraceGetterInterface interface.
446class OsStackTraceGetter : public OsStackTraceGetterInterface {
447 public:
448 OsStackTraceGetter() {}
449
450 std::string CurrentStackTrace(int max_depth, int skip_count) override;
451 void UponLeavingGTest() override;
452
453 private:
454#if GTEST_HAS_ABSL
455 Mutex mutex_; // Protects all internal state.
456
457 // We save the stack frame below the frame that calls user code.
458 // We do this because the address of the frame immediately below
459 // the user code changes between the call to UponLeavingGTest()
460 // and any calls to the stack trace code from within the user code.
461 void* caller_frame_ = nullptr;
462#endif // GTEST_HAS_ABSL
463
464 GTEST_DISALLOW_COPY_AND_ASSIGN_(OsStackTraceGetter);
465};
466
467// Information about a Google Test trace point.
468struct TraceInfo {
469 const char* file;
470 int line;
471 std::string message;
472};
473
474// This is the default global test part result reporter used in UnitTestImpl.
475// This class should only be used by UnitTestImpl.
476class DefaultGlobalTestPartResultReporter
477 : public TestPartResultReporterInterface {
478 public:
479 explicit DefaultGlobalTestPartResultReporter(UnitTestImpl* unit_test);
480 // Implements the TestPartResultReporterInterface. Reports the test part
481 // result in the current test.
482 void ReportTestPartResult(const TestPartResult& result) override;
483
484 private:
485 UnitTestImpl* const unit_test_;
486
487 GTEST_DISALLOW_COPY_AND_ASSIGN_(DefaultGlobalTestPartResultReporter);
488};
489
490// This is the default per thread test part result reporter used in
491// UnitTestImpl. This class should only be used by UnitTestImpl.
492class DefaultPerThreadTestPartResultReporter
493 : public TestPartResultReporterInterface {
494 public:
495 explicit DefaultPerThreadTestPartResultReporter(UnitTestImpl* unit_test);
496 // Implements the TestPartResultReporterInterface. The implementation just
497 // delegates to the current global test part result reporter of *unit_test_.
498 void ReportTestPartResult(const TestPartResult& result) override;
499
500 private:
501 UnitTestImpl* const unit_test_;
502
503 GTEST_DISALLOW_COPY_AND_ASSIGN_(DefaultPerThreadTestPartResultReporter);
504};
505
506// The private implementation of the UnitTest class. We don't protect
507// the methods under a mutex, as this class is not accessible by a
508// user and the UnitTest class that delegates work to this class does
509// proper locking.
510class GTEST_API_ UnitTestImpl {
511 public:
512 explicit UnitTestImpl(UnitTest* parent);
513 virtual ~UnitTestImpl();
514
515 // There are two different ways to register your own TestPartResultReporter.
516 // You can register your own repoter to listen either only for test results
517 // from the current thread or for results from all threads.
518 // By default, each per-thread test result repoter just passes a new
519 // TestPartResult to the global test result reporter, which registers the
520 // test part result for the currently running test.
521
522 // Returns the global test part result reporter.
523 TestPartResultReporterInterface* GetGlobalTestPartResultReporter();
524
525 // Sets the global test part result reporter.
526 void SetGlobalTestPartResultReporter(
527 TestPartResultReporterInterface* reporter);
528
529 // Returns the test part result reporter for the current thread.
530 TestPartResultReporterInterface* GetTestPartResultReporterForCurrentThread();
531
532 // Sets the test part result reporter for the current thread.
533 void SetTestPartResultReporterForCurrentThread(
534 TestPartResultReporterInterface* reporter);
535
536 // Gets the number of successful test suites.
537 int successful_test_suite_count() const;
538
539 // Gets the number of failed test suites.
540 int failed_test_suite_count() const;
541
542 // Gets the number of all test suites.
543 int total_test_suite_count() const;
544
545 // Gets the number of all test suites that contain at least one test
546 // that should run.
547 int test_suite_to_run_count() const;
548
549 // Gets the number of successful tests.
550 int successful_test_count() const;
551
552 // Gets the number of skipped tests.
553 int skipped_test_count() const;
554
555 // Gets the number of failed tests.
556 int failed_test_count() const;
557
558 // Gets the number of disabled tests that will be reported in the XML report.
559 int reportable_disabled_test_count() const;
560
561 // Gets the number of disabled tests.
562 int disabled_test_count() const;
563
564 // Gets the number of tests to be printed in the XML report.
565 int reportable_test_count() const;
566
567 // Gets the number of all tests.
568 int total_test_count() const;
569
570 // Gets the number of tests that should run.
571 int test_to_run_count() const;
572
573 // Gets the time of the test program start, in ms from the start of the
574 // UNIX epoch.
575 TimeInMillis start_timestamp() const { return start_timestamp_; }
576
577 // Gets the elapsed time, in milliseconds.
578 TimeInMillis elapsed_time() const { return elapsed_time_; }
579
580 // Returns true iff the unit test passed (i.e. all test suites passed).
581 bool Passed() const { return !Failed(); }
582
583 // Returns true iff the unit test failed (i.e. some test suite failed
584 // or something outside of all tests failed).
585 bool Failed() const {
586 return failed_test_suite_count() > 0 || ad_hoc_test_result()->Failed();
587 }
588
589 // Gets the i-th test suite among all the test suites. i can range from 0 to
590 // total_test_suite_count() - 1. If i is not in that range, returns NULL.
591 const TestSuite* GetTestSuite(int i) const {
592 const int index = GetElementOr(test_suite_indices_, i, -1);
593 return index < 0 ? nullptr : test_suites_[static_cast<size_t>(i)];
594 }
595
596 // Legacy API is deprecated but still available
597#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
598 const TestCase* GetTestCase(int i) const { return GetTestSuite(i); }
599#endif // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
600
601 // Gets the i-th test suite among all the test suites. i can range from 0 to
602 // total_test_suite_count() - 1. If i is not in that range, returns NULL.
603 TestSuite* GetMutableSuiteCase(int i) {
604 const int index = GetElementOr(test_suite_indices_, i, -1);
605 return index < 0 ? nullptr : test_suites_[static_cast<size_t>(index)];
606 }
607
608 // Provides access to the event listener list.
609 TestEventListeners* listeners() { return &listeners_; }
610
611 // Returns the TestResult for the test that's currently running, or
612 // the TestResult for the ad hoc test if no test is running.
613 TestResult* current_test_result();
614
615 // Returns the TestResult for the ad hoc test.
616 const TestResult* ad_hoc_test_result() const { return &ad_hoc_test_result_; }
617
618 // Sets the OS stack trace getter.
619 //
620 // Does nothing if the input and the current OS stack trace getter
621 // are the same; otherwise, deletes the old getter and makes the
622 // input the current getter.
623 void set_os_stack_trace_getter(OsStackTraceGetterInterface* getter);
624
625 // Returns the current OS stack trace getter if it is not NULL;
626 // otherwise, creates an OsStackTraceGetter, makes it the current
627 // getter, and returns it.
628 OsStackTraceGetterInterface* os_stack_trace_getter();
629
630 // Returns the current OS stack trace as an std::string.
631 //
632 // The maximum number of stack frames to be included is specified by
633 // the gtest_stack_trace_depth flag. The skip_count parameter
634 // specifies the number of top frames to be skipped, which doesn't
635 // count against the number of frames to be included.
636 //
637 // For example, if Foo() calls Bar(), which in turn calls
638 // CurrentOsStackTraceExceptTop(1), Foo() will be included in the
639 // trace but Bar() and CurrentOsStackTraceExceptTop() won't.
640 std::string CurrentOsStackTraceExceptTop(int skip_count) GTEST_NO_INLINE_;
641
642 // Finds and returns a TestSuite with the given name. If one doesn't
643 // exist, creates one and returns it.
644 //
645 // Arguments:
646 //
647 // test_suite_name: name of the test suite
648 // type_param: the name of the test's type parameter, or NULL if
649 // this is not a typed or a type-parameterized test.
650 // set_up_tc: pointer to the function that sets up the test suite
651 // tear_down_tc: pointer to the function that tears down the test suite
652 TestSuite* GetTestSuite(const char* test_suite_name, const char* type_param,
653 internal::SetUpTestSuiteFunc set_up_tc,
654 internal::TearDownTestSuiteFunc tear_down_tc);
655
656// Legacy API is deprecated but still available
657#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
658 TestCase* GetTestCase(const char* test_case_name, const char* type_param,
659 internal::SetUpTestSuiteFunc set_up_tc,
660 internal::TearDownTestSuiteFunc tear_down_tc) {
661 return GetTestSuite(test_case_name, type_param, set_up_tc, tear_down_tc);
662 }
663#endif // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
664
665 // Adds a TestInfo to the unit test.
666 //
667 // Arguments:
668 //
669 // set_up_tc: pointer to the function that sets up the test suite
670 // tear_down_tc: pointer to the function that tears down the test suite
671 // test_info: the TestInfo object
672 void AddTestInfo(internal::SetUpTestSuiteFunc set_up_tc,
673 internal::TearDownTestSuiteFunc tear_down_tc,
674 TestInfo* test_info) {
675 // In order to support thread-safe death tests, we need to
676 // remember the original working directory when the test program
677 // was first invoked. We cannot do this in RUN_ALL_TESTS(), as
678 // the user may have changed the current directory before calling
679 // RUN_ALL_TESTS(). Therefore we capture the current directory in
680 // AddTestInfo(), which is called to register a TEST or TEST_F
681 // before main() is reached.
682 if (original_working_dir_.IsEmpty()) {
683 original_working_dir_.Set(FilePath::GetCurrentDir());
684 GTEST_CHECK_(!original_working_dir_.IsEmpty())
685 << "Failed to get the current working directory.";
686 }
687
688 GetTestSuite(test_info->test_suite_name(), test_info->type_param(),
689 set_up_tc, tear_down_tc)
690 ->AddTestInfo(test_info);
691 }
692
693 // Returns ParameterizedTestSuiteRegistry object used to keep track of
694 // value-parameterized tests and instantiate and register them.
695 internal::ParameterizedTestSuiteRegistry& parameterized_test_registry() {
696 return parameterized_test_registry_;
697 }
698
699 // Sets the TestSuite object for the test that's currently running.
700 void set_current_test_suite(TestSuite* a_current_test_suite) {
701 current_test_suite_ = a_current_test_suite;
702 }
703
704 // Sets the TestInfo object for the test that's currently running. If
705 // current_test_info is NULL, the assertion results will be stored in
706 // ad_hoc_test_result_.
707 void set_current_test_info(TestInfo* a_current_test_info) {
708 current_test_info_ = a_current_test_info;
709 }
710
711 // Registers all parameterized tests defined using TEST_P and
712 // INSTANTIATE_TEST_SUITE_P, creating regular tests for each test/parameter
713 // combination. This method can be called more then once; it has guards
714 // protecting from registering the tests more then once. If
715 // value-parameterized tests are disabled, RegisterParameterizedTests is
716 // present but does nothing.
717 void RegisterParameterizedTests();
718
719 // Runs all tests in this UnitTest object, prints the result, and
720 // returns true if all tests are successful. If any exception is
721 // thrown during a test, this test is considered to be failed, but
722 // the rest of the tests will still be run.
723 bool RunAllTests();
724
725 // Clears the results of all tests, except the ad hoc tests.
726 void ClearNonAdHocTestResult() {
727 ForEach(test_suites_, TestSuite::ClearTestSuiteResult);
728 }
729
730 // Clears the results of ad-hoc test assertions.
731 void ClearAdHocTestResult() {
732 ad_hoc_test_result_.Clear();
733 }
734
735 // Adds a TestProperty to the current TestResult object when invoked in a
736 // context of a test or a test suite, or to the global property set. If the
737 // result already contains a property with the same key, the value will be
738 // updated.
739 void RecordProperty(const TestProperty& test_property);
740
741 enum ReactionToSharding {
742 HONOR_SHARDING_PROTOCOL,
743 IGNORE_SHARDING_PROTOCOL
744 };
745
746 // Matches the full name of each test against the user-specified
747 // filter to decide whether the test should run, then records the
748 // result in each TestSuite and TestInfo object.
749 // If shard_tests == HONOR_SHARDING_PROTOCOL, further filters tests
750 // based on sharding variables in the environment.
751 // Returns the number of tests that should run.
752 int FilterTests(ReactionToSharding shard_tests);
753
754 // Prints the names of the tests matching the user-specified filter flag.
755 void ListTestsMatchingFilter();
756
757 const TestSuite* current_test_suite() const { return current_test_suite_; }
758 TestInfo* current_test_info() { return current_test_info_; }
759 const TestInfo* current_test_info() const { return current_test_info_; }
760
761 // Returns the vector of environments that need to be set-up/torn-down
762 // before/after the tests are run.
763 std::vector<Environment*>& environments() { return environments_; }
764
765 // Getters for the per-thread Google Test trace stack.
766 std::vector<TraceInfo>& gtest_trace_stack() {
767 return *(gtest_trace_stack_.pointer());
768 }
769 const std::vector<TraceInfo>& gtest_trace_stack() const {
770 return gtest_trace_stack_.get();
771 }
772
773#if GTEST_HAS_DEATH_TEST
774 void InitDeathTestSubprocessControlInfo() {
775 internal_run_death_test_flag_.reset(ParseInternalRunDeathTestFlag());
776 }
777 // Returns a pointer to the parsed --gtest_internal_run_death_test
778 // flag, or NULL if that flag was not specified.
779 // This information is useful only in a death test child process.
780 // Must not be called before a call to InitGoogleTest.
781 const InternalRunDeathTestFlag* internal_run_death_test_flag() const {
782 return internal_run_death_test_flag_.get();
783 }
784
785 // Returns a pointer to the current death test factory.
786 internal::DeathTestFactory* death_test_factory() {
787 return death_test_factory_.get();
788 }
789
790 void SuppressTestEventsIfInSubprocess();
791
792 friend class ReplaceDeathTestFactory;
793#endif // GTEST_HAS_DEATH_TEST
794
795 // Initializes the event listener performing XML output as specified by
796 // UnitTestOptions. Must not be called before InitGoogleTest.
797 void ConfigureXmlOutput();
798
799#if GTEST_CAN_STREAM_RESULTS_
800 // Initializes the event listener for streaming test results to a socket.
801 // Must not be called before InitGoogleTest.
802 void ConfigureStreamingOutput();
803#endif
804
805 // Performs initialization dependent upon flag values obtained in
806 // ParseGoogleTestFlagsOnly. Is called from InitGoogleTest after the call to
807 // ParseGoogleTestFlagsOnly. In case a user neglects to call InitGoogleTest
808 // this function is also called from RunAllTests. Since this function can be
809 // called more than once, it has to be idempotent.
810 void PostFlagParsingInit();
811
812 // Gets the random seed used at the start of the current test iteration.
813 int random_seed() const { return random_seed_; }
814
815 // Gets the random number generator.
816 internal::Random* random() { return &random_; }
817
818 // Shuffles all test suites, and the tests within each test suite,
819 // making sure that death tests are still run first.
820 void ShuffleTests();
821
822 // Restores the test suites and tests to their order before the first shuffle.
823 void UnshuffleTests();
824
825 // Returns the value of GTEST_FLAG(catch_exceptions) at the moment
826 // UnitTest::Run() starts.
827 bool catch_exceptions() const { return catch_exceptions_; }
828
829 private:
830 friend class ::testing::UnitTest;
831
832 // Used by UnitTest::Run() to capture the state of
833 // GTEST_FLAG(catch_exceptions) at the moment it starts.
834 void set_catch_exceptions(bool value) { catch_exceptions_ = value; }
835
836 // The UnitTest object that owns this implementation object.
837 UnitTest* const parent_;
838
839 // The working directory when the first TEST() or TEST_F() was
840 // executed.
841 internal::FilePath original_working_dir_;
842
843 // The default test part result reporters.
844 DefaultGlobalTestPartResultReporter default_global_test_part_result_reporter_;
845 DefaultPerThreadTestPartResultReporter
846 default_per_thread_test_part_result_reporter_;
847
848 // Points to (but doesn't own) the global test part result reporter.
849 TestPartResultReporterInterface* global_test_part_result_repoter_;
850
851 // Protects read and write access to global_test_part_result_reporter_.
852 internal::Mutex global_test_part_result_reporter_mutex_;
853
854 // Points to (but doesn't own) the per-thread test part result reporter.
855 internal::ThreadLocal<TestPartResultReporterInterface*>
856 per_thread_test_part_result_reporter_;
857
858 // The vector of environments that need to be set-up/torn-down
859 // before/after the tests are run.
860 std::vector<Environment*> environments_;
861
862 // The vector of TestSuites in their original order. It owns the
863 // elements in the vector.
864 std::vector<TestSuite*> test_suites_;
865
866 // Provides a level of indirection for the test suite list to allow
867 // easy shuffling and restoring the test suite order. The i-th
868 // element of this vector is the index of the i-th test suite in the
869 // shuffled order.
870 std::vector<int> test_suite_indices_;
871
872 // ParameterizedTestRegistry object used to register value-parameterized
873 // tests.
874 internal::ParameterizedTestSuiteRegistry parameterized_test_registry_;
875
876 // Indicates whether RegisterParameterizedTests() has been called already.
877 bool parameterized_tests_registered_;
878
879 // Index of the last death test suite registered. Initially -1.
880 int last_death_test_suite_;
881
882 // This points to the TestSuite for the currently running test. It
883 // changes as Google Test goes through one test suite after another.
884 // When no test is running, this is set to NULL and Google Test
885 // stores assertion results in ad_hoc_test_result_. Initially NULL.
886 TestSuite* current_test_suite_;
887
888 // This points to the TestInfo for the currently running test. It
889 // changes as Google Test goes through one test after another. When
890 // no test is running, this is set to NULL and Google Test stores
891 // assertion results in ad_hoc_test_result_. Initially NULL.
892 TestInfo* current_test_info_;
893
894 // Normally, a user only writes assertions inside a TEST or TEST_F,
895 // or inside a function called by a TEST or TEST_F. Since Google
896 // Test keeps track of which test is current running, it can
897 // associate such an assertion with the test it belongs to.
898 //
899 // If an assertion is encountered when no TEST or TEST_F is running,
900 // Google Test attributes the assertion result to an imaginary "ad hoc"
901 // test, and records the result in ad_hoc_test_result_.
902 TestResult ad_hoc_test_result_;
903
904 // The list of event listeners that can be used to track events inside
905 // Google Test.
906 TestEventListeners listeners_;
907
908 // The OS stack trace getter. Will be deleted when the UnitTest
909 // object is destructed. By default, an OsStackTraceGetter is used,
910 // but the user can set this field to use a custom getter if that is
911 // desired.
912 OsStackTraceGetterInterface* os_stack_trace_getter_;
913
914 // True iff PostFlagParsingInit() has been called.
915 bool post_flag_parse_init_performed_;
916
917 // The random number seed used at the beginning of the test run.
918 int random_seed_;
919
920 // Our random number generator.
921 internal::Random random_;
922
923 // The time of the test program start, in ms from the start of the
924 // UNIX epoch.
925 TimeInMillis start_timestamp_;
926
927 // How long the test took to run, in milliseconds.
928 TimeInMillis elapsed_time_;
929
930#if GTEST_HAS_DEATH_TEST
931 // The decomposed components of the gtest_internal_run_death_test flag,
932 // parsed when RUN_ALL_TESTS is called.
933 std::unique_ptr<InternalRunDeathTestFlag> internal_run_death_test_flag_;
934 std::unique_ptr<internal::DeathTestFactory> death_test_factory_;
935#endif // GTEST_HAS_DEATH_TEST
936
937 // A per-thread stack of traces created by the SCOPED_TRACE() macro.
938 internal::ThreadLocal<std::vector<TraceInfo> > gtest_trace_stack_;
939
940 // The value of GTEST_FLAG(catch_exceptions) at the moment RunAllTests()
941 // starts.
942 bool catch_exceptions_;
943
944 GTEST_DISALLOW_COPY_AND_ASSIGN_(UnitTestImpl);
945}; // class UnitTestImpl
946
947// Convenience function for accessing the global UnitTest
948// implementation object.
949inline UnitTestImpl* GetUnitTestImpl() {
950 return UnitTest::GetInstance()->impl();
951}
952
953#if GTEST_USES_SIMPLE_RE
954
955// Internal helper functions for implementing the simple regular
956// expression matcher.
957GTEST_API_ bool IsInSet(char ch, const char* str);
958GTEST_API_ bool IsAsciiDigit(char ch);
959GTEST_API_ bool IsAsciiPunct(char ch);
960GTEST_API_ bool IsRepeat(char ch);
961GTEST_API_ bool IsAsciiWhiteSpace(char ch);
962GTEST_API_ bool IsAsciiWordChar(char ch);
963GTEST_API_ bool IsValidEscape(char ch);
964GTEST_API_ bool AtomMatchesChar(bool escaped, char pattern, char ch);
965GTEST_API_ bool ValidateRegex(const char* regex);
966GTEST_API_ bool MatchRegexAtHead(const char* regex, const char* str);
967GTEST_API_ bool MatchRepetitionAndRegexAtHead(
968 bool escaped, char ch, char repeat, const char* regex, const char* str);
969GTEST_API_ bool MatchRegexAnywhere(const char* regex, const char* str);
970
971#endif // GTEST_USES_SIMPLE_RE
972
973// Parses the command line for Google Test flags, without initializing
974// other parts of Google Test.
975GTEST_API_ void ParseGoogleTestFlagsOnly(int* argc, char** argv);
976GTEST_API_ void ParseGoogleTestFlagsOnly(int* argc, wchar_t** argv);
977
978#if GTEST_HAS_DEATH_TEST
979
980// Returns the message describing the last system error, regardless of the
981// platform.
982GTEST_API_ std::string GetLastErrnoDescription();
983
984// Attempts to parse a string into a positive integer pointed to by the
985// number parameter. Returns true if that is possible.
986// GTEST_HAS_DEATH_TEST implies that we have ::std::string, so we can use
987// it here.
988template <typename Integer>
989bool ParseNaturalNumber(const ::std::string& str, Integer* number) {
990 // Fail fast if the given string does not begin with a digit;
991 // this bypasses strtoXXX's "optional leading whitespace and plus
992 // or minus sign" semantics, which are undesirable here.
993 if (str.empty() || !IsDigit(str[0])) {
994 return false;
995 }
996 errno = 0;
997
998 char* end;
999 // BiggestConvertible is the largest integer type that system-provided
1000 // string-to-number conversion routines can return.
1001
1002# if GTEST_OS_WINDOWS && !defined(__GNUC__)
1003
1004 // MSVC and C++ Builder define __int64 instead of the standard long long.
1005 typedef unsigned __int64 BiggestConvertible;
1006 const BiggestConvertible parsed = _strtoui64(str.c_str(), &end, 10);
1007
1008# else
1009
1010 typedef unsigned long long BiggestConvertible; // NOLINT
1011 const BiggestConvertible parsed = strtoull(str.c_str(), &end, 10);
1012
1013# endif // GTEST_OS_WINDOWS && !defined(__GNUC__)
1014
1015 const bool parse_success = *end == '\0' && errno == 0;
1016
1017 GTEST_CHECK_(sizeof(Integer) <= sizeof(parsed));
1018
1019 const Integer result = static_cast<Integer>(parsed);
1020 if (parse_success && static_cast<BiggestConvertible>(result) == parsed) {
1021 *number = result;
1022 return true;
1023 }
1024 return false;
1025}
1026#endif // GTEST_HAS_DEATH_TEST
1027
1028// TestResult contains some private methods that should be hidden from
1029// Google Test user but are required for testing. This class allow our tests
1030// to access them.
1031//
1032// This class is supplied only for the purpose of testing Google Test's own
1033// constructs. Do not use it in user tests, either directly or indirectly.
1034class TestResultAccessor {
1035 public:
1036 static void RecordProperty(TestResult* test_result,
1037 const std::string& xml_element,
1038 const TestProperty& property) {
1039 test_result->RecordProperty(xml_element, property);
1040 }
1041
1042 static void ClearTestPartResults(TestResult* test_result) {
1043 test_result->ClearTestPartResults();
1044 }
1045
1046 static const std::vector<testing::TestPartResult>& test_part_results(
1047 const TestResult& test_result) {
1048 return test_result.test_part_results();
1049 }
1050};
1051
1052#if GTEST_CAN_STREAM_RESULTS_
1053
1054// Streams test results to the given port on the given host machine.
1055class StreamingListener : public EmptyTestEventListener {
1056 public:
1057 // Abstract base class for writing strings to a socket.
1058 class AbstractSocketWriter {
1059 public:
1060 virtual ~AbstractSocketWriter() {}
1061
1062 // Sends a string to the socket.
1063 virtual void Send(const std::string& message) = 0;
1064
1065 // Closes the socket.
1066 virtual void CloseConnection() {}
1067
1068 // Sends a string and a newline to the socket.
1069 void SendLn(const std::string& message) { Send(message + "\n"); }
1070 };
1071
1072 // Concrete class for actually writing strings to a socket.
1073 class SocketWriter : public AbstractSocketWriter {
1074 public:
1075 SocketWriter(const std::string& host, const std::string& port)
1076 : sockfd_(-1), host_name_(host), port_num_(port) {
1077 MakeConnection();
1078 }
1079
1080 ~SocketWriter() override {
1081 if (sockfd_ != -1)
1082 CloseConnection();
1083 }
1084
1085 // Sends a string to the socket.
1086 void Send(const std::string& message) override {
1087 GTEST_CHECK_(sockfd_ != -1)
1088 << "Send() can be called only when there is a connection.";
1089
1090 const auto len = static_cast<size_t>(message.length());
1091 if (write(sockfd_, message.c_str(), len) != static_cast<ssize_t>(len)) {
1092 GTEST_LOG_(WARNING)
1093 << "stream_result_to: failed to stream to "
1094 << host_name_ << ":" << port_num_;
1095 }
1096 }
1097
1098 private:
1099 // Creates a client socket and connects to the server.
1100 void MakeConnection();
1101
1102 // Closes the socket.
1103 void CloseConnection() override {
1104 GTEST_CHECK_(sockfd_ != -1)
1105 << "CloseConnection() can be called only when there is a connection.";
1106
1107 close(sockfd_);
1108 sockfd_ = -1;
1109 }
1110
1111 int sockfd_; // socket file descriptor
1112 const std::string host_name_;
1113 const std::string port_num_;
1114
1115 GTEST_DISALLOW_COPY_AND_ASSIGN_(SocketWriter);
1116 }; // class SocketWriter
1117
1118 // Escapes '=', '&', '%', and '\n' characters in str as "%xx".
1119 static std::string UrlEncode(const char* str);
1120
1121 StreamingListener(const std::string& host, const std::string& port)
1122 : socket_writer_(new SocketWriter(host, port)) {
1123 Start();
1124 }
1125
1126 explicit StreamingListener(AbstractSocketWriter* socket_writer)
1127 : socket_writer_(socket_writer) { Start(); }
1128
1129 void OnTestProgramStart(const UnitTest& /* unit_test */) override {
1130 SendLn("event=TestProgramStart");
1131 }
1132
1133 void OnTestProgramEnd(const UnitTest& unit_test) override {
1134 // Note that Google Test current only report elapsed time for each
1135 // test iteration, not for the entire test program.
1136 SendLn("event=TestProgramEnd&passed=" + FormatBool(unit_test.Passed()));
1137
1138 // Notify the streaming server to stop.
1139 socket_writer_->CloseConnection();
1140 }
1141
1142 void OnTestIterationStart(const UnitTest& /* unit_test */,
1143 int iteration) override {
1144 SendLn("event=TestIterationStart&iteration=" +
1145 StreamableToString(iteration));
1146 }
1147
1148 void OnTestIterationEnd(const UnitTest& unit_test,
1149 int /* iteration */) override {
1150 SendLn("event=TestIterationEnd&passed=" +
1151 FormatBool(unit_test.Passed()) + "&elapsed_time=" +
1152 StreamableToString(unit_test.elapsed_time()) + "ms");
1153 }
1154
1155 // Note that "event=TestCaseStart" is a wire format and has to remain
1156 // "case" for compatibilty
1157 void OnTestCaseStart(const TestCase& test_case) override {
1158 SendLn(std::string("event=TestCaseStart&name=") + test_case.name());
1159 }
1160
1161 // Note that "event=TestCaseEnd" is a wire format and has to remain
1162 // "case" for compatibilty
1163 void OnTestCaseEnd(const TestCase& test_case) override {
1164 SendLn("event=TestCaseEnd&passed=" + FormatBool(test_case.Passed()) +
1165 "&elapsed_time=" + StreamableToString(test_case.elapsed_time()) +
1166 "ms");
1167 }
1168
1169 void OnTestStart(const TestInfo& test_info) override {
1170 SendLn(std::string("event=TestStart&name=") + test_info.name());
1171 }
1172
1173 void OnTestEnd(const TestInfo& test_info) override {
1174 SendLn("event=TestEnd&passed=" +
1175 FormatBool((test_info.result())->Passed()) +
1176 "&elapsed_time=" +
1177 StreamableToString((test_info.result())->elapsed_time()) + "ms");
1178 }
1179
1180 void OnTestPartResult(const TestPartResult& test_part_result) override {
1181 const char* file_name = test_part_result.file_name();
1182 if (file_name == nullptr) file_name = "";
1183 SendLn("event=TestPartResult&file=" + UrlEncode(file_name) +
1184 "&line=" + StreamableToString(test_part_result.line_number()) +
1185 "&message=" + UrlEncode(test_part_result.message()));
1186 }
1187
1188 private:
1189 // Sends the given message and a newline to the socket.
1190 void SendLn(const std::string& message) { socket_writer_->SendLn(message); }
1191
1192 // Called at the start of streaming to notify the receiver what
1193 // protocol we are using.
1194 void Start() { SendLn("gtest_streaming_protocol_version=1.0"); }
1195
1196 std::string FormatBool(bool value) { return value ? "1" : "0"; }
1197
1198 const std::unique_ptr<AbstractSocketWriter> socket_writer_;
1199
1200 GTEST_DISALLOW_COPY_AND_ASSIGN_(StreamingListener);
1201}; // class StreamingListener
1202
1203#endif // GTEST_CAN_STREAM_RESULTS_
1204
1205} // namespace internal
1206} // namespace testing
1207
1208GTEST_DISABLE_MSC_WARNINGS_POP_() // 4251
1209
1210#endif // GTEST_SRC_GTEST_INTERNAL_INL_H_
1211