1	// Copyright 2005, Google Inc.
2	// All rights reserved.
3	//
4	// Redistribution and use in source and binary forms, with or without
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17	//
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29
30	// The Google C++ Testing and Mocking Framework (Google Test)
31	//
32	// This header file defines the public API for Google Test. It should be
33	// included by any test program that uses Google Test.
34	//
35	// IMPORTANT NOTE: Due to limitation of the C++ language, we have to
36	// leave some internal implementation details in this header file.
37	// They are clearly marked by comments like this:
38	//
39	// // INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
40	//
41	// Such code is NOT meant to be used by a user directly, and is subject
42	// to CHANGE WITHOUT NOTICE. Therefore DO NOT DEPEND ON IT in a user
43	// program!
44	//
45	// Acknowledgment: Google Test borrowed the idea of automatic test
46	// registration from Barthelemy Dagenais' (barthelemy@prologique.com)
47	// easyUnit framework.
48
49	#ifndef GOOGLETEST_INCLUDE_GTEST_GTEST_H_
50	#define GOOGLETEST_INCLUDE_GTEST_GTEST_H_
51
52	#include <cstddef>
53	#include <cstdint>
54	#include <iomanip>
55	#include <limits>
56	#include <memory>
57	#include <ostream>
58	#include <set>
59	#include <sstream>
60	#include <string>
61	#include <type_traits>
62	#include <vector>
63
64	#include "gtest/gtest-assertion-result.h"
65	#include "gtest/gtest-death-test.h"
66	#include "gtest/gtest-matchers.h"
67	#include "gtest/gtest-message.h"
68	#include "gtest/gtest-param-test.h"
69	#include "gtest/gtest-printers.h"
70	#include "gtest/gtest-test-part.h"
71	#include "gtest/gtest-typed-test.h"
72	#include "gtest/gtest_pred_impl.h"
73	#include "gtest/gtest_prod.h"
74	#include "gtest/internal/gtest-internal.h"
75	#include "gtest/internal/gtest-string.h"
76
77	GTEST_DISABLE_MSC_WARNINGS_PUSH_(4251 \
78	/* class A needs to have dll-interface to be used by clients of class B */)
79
80	// Declares the flags.
81
82	// This flag temporary enables the disabled tests.
83	GTEST_DECLARE_bool_(also_run_disabled_tests);
84
85	// This flag brings the debugger on an assertion failure.
86	GTEST_DECLARE_bool_(break_on_failure);
87
88	// This flag controls whether Google Test catches all test-thrown exceptions
89	// and logs them as failures.
90	GTEST_DECLARE_bool_(catch_exceptions);
91
92	// This flag enables using colors in terminal output. Available values are
93	// "yes" to enable colors, "no" (disable colors), or "auto" (the default)
94	// to let Google Test decide.
95	GTEST_DECLARE_string_(color);
96
97	// This flag controls whether the test runner should continue execution past
98	// first failure.
99	GTEST_DECLARE_bool_(fail_fast);
100
101	// This flag sets up the filter to select by name using a glob pattern
102	// the tests to run. If the filter is not given all tests are executed.
103	GTEST_DECLARE_string_(filter);
104
105	// This flag controls whether Google Test installs a signal handler that dumps
106	// debugging information when fatal signals are raised.
107	GTEST_DECLARE_bool_(install_failure_signal_handler);
108
109	// This flag causes the Google Test to list tests. None of the tests listed
110	// are actually run if the flag is provided.
111	GTEST_DECLARE_bool_(list_tests);
112
113	// This flag controls whether Google Test emits a detailed XML report to a file
114	// in addition to its normal textual output.
115	GTEST_DECLARE_string_(output);
116
117	// This flags control whether Google Test prints only test failures.
118	GTEST_DECLARE_bool_(brief);
119
120	// This flags control whether Google Test prints the elapsed time for each
121	// test.
122	GTEST_DECLARE_bool_(print_time);
123
124	// This flags control whether Google Test prints UTF8 characters as text.
125	GTEST_DECLARE_bool_(print_utf8);
126
127	// This flag specifies the random number seed.
128	GTEST_DECLARE_int32_(random_seed);
129
130	// This flag sets how many times the tests are repeated. The default value
131	// is 1. If the value is -1 the tests are repeating forever.
132	GTEST_DECLARE_int32_(repeat);
133
134	// This flag controls whether Google Test Environments are recreated for each
135	// repeat of the tests. The default value is true. If set to false the global
136	// test Environment objects are only set up once, for the first iteration, and
137	// only torn down once, for the last.
138	GTEST_DECLARE_bool_(recreate_environments_when_repeating);
139
140	// This flag controls whether Google Test includes Google Test internal
141	// stack frames in failure stack traces.
142	GTEST_DECLARE_bool_(show_internal_stack_frames);
143
144	// When this flag is specified, tests' order is randomized on every iteration.
145	GTEST_DECLARE_bool_(shuffle);
146
147	// This flag specifies the maximum number of stack frames to be
148	// printed in a failure message.
149	GTEST_DECLARE_int32_(stack_trace_depth);
150
151	// When this flag is specified, a failed assertion will throw an
152	// exception if exceptions are enabled, or exit the program with a
153	// non-zero code otherwise. For use with an external test framework.
154	GTEST_DECLARE_bool_(throw_on_failure);
155
156	// When this flag is set with a "host:port" string, on supported
157	// platforms test results are streamed to the specified port on
158	// the specified host machine.
159	GTEST_DECLARE_string_(stream_result_to);
160
161	#if GTEST_USE_OWN_FLAGFILE_FLAG_
162	GTEST_DECLARE_string_(flagfile);
163	#endif // GTEST_USE_OWN_FLAGFILE_FLAG_
164
165	namespace testing {
166
167	// Silence C4100 (unreferenced formal parameter) and 4805
168	// unsafe mix of type 'const int' and type 'const bool'
169	GTEST_DISABLE_MSC_WARNINGS_PUSH_(4805 4100)
170
171	// The upper limit for valid stack trace depths.
172	const int kMaxStackTraceDepth = 100;
173
174	namespace internal {
175
176	class AssertHelper;
177	class DefaultGlobalTestPartResultReporter;
178	class ExecDeathTest;
179	class NoExecDeathTest;
180	class FinalSuccessChecker;
181	class GTestFlagSaver;
182	class StreamingListenerTest;
183	class TestResultAccessor;
184	class TestEventListenersAccessor;
185	class TestEventRepeater;
186	class UnitTestRecordPropertyTestHelper;
187	class WindowsDeathTest;
188	class FuchsiaDeathTest;
189	class UnitTestImpl* GetUnitTestImpl();
190	void ReportFailureInUnknownLocation(TestPartResult::Type result_type,
191	const std::string& message);
192	std::set<std::string>* GetIgnoredParameterizedTestSuites();
193
194	// A base class that prevents subclasses from being copyable.
195	// We do this instead of using '= delete' so as to avoid triggering warnings
196	// inside user code regarding any of our declarations.
197	class GTestNonCopyable {
198	public:
199	GTestNonCopyable() = default;
200	GTestNonCopyable(const GTestNonCopyable&) = delete;
201	GTestNonCopyable& operator=(const GTestNonCopyable&) = delete;
202	~GTestNonCopyable() = default;
203	};
204
205	} // namespace internal
206
207	// The friend relationship of some of these classes is cyclic.
208	// If we don't forward declare them the compiler might confuse the classes
209	// in friendship clauses with same named classes on the scope.
210	class Test;
211	class TestSuite;
212
213	// Old API is still available but deprecated
214	#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
215	using TestCase = TestSuite;
216	#endif
217	class TestInfo;
218	class UnitTest;
219
220	// The abstract class that all tests inherit from.
221	//
222	// In Google Test, a unit test program contains one or many TestSuites, and
223	// each TestSuite contains one or many Tests.
224	//
225	// When you define a test using the TEST macro, you don't need to
226	// explicitly derive from Test - the TEST macro automatically does
227	// this for you.
228	//
229	// The only time you derive from Test is when defining a test fixture
230	// to be used in a TEST_F. For example:
231	//
232	// class FooTest : public testing::Test {
233	// protected:
234	// void SetUp() override { ... }
235	// void TearDown() override { ... }
236	// ...
237	// };
238	//
239	// TEST_F(FooTest, Bar) { ... }
240	// TEST_F(FooTest, Baz) { ... }
241	//
242	// Test is not copyable.
243	class GTEST_API_ Test {
244	public:
245	friend class TestInfo;
246
247	// The d'tor is virtual as we intend to inherit from Test.
248	virtual ~Test();
249
250	// Sets up the stuff shared by all tests in this test suite.
251	//
252	// Google Test will call Foo::SetUpTestSuite() before running the first
253	// test in test suite Foo. Hence a sub-class can define its own
254	// SetUpTestSuite() method to shadow the one defined in the super
255	// class.
256	static void SetUpTestSuite() {}
257
258	// Tears down the stuff shared by all tests in this test suite.
259	//
260	// Google Test will call Foo::TearDownTestSuite() after running the last
261	// test in test suite Foo. Hence a sub-class can define its own
262	// TearDownTestSuite() method to shadow the one defined in the super
263	// class.
264	static void TearDownTestSuite() {}
265
266	// Legacy API is deprecated but still available. Use SetUpTestSuite and
267	// TearDownTestSuite instead.
268	#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
269	static void TearDownTestCase() {}
270	static void SetUpTestCase() {}
271	#endif // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
272
273	// Returns true if and only if the current test has a fatal failure.
274	static bool HasFatalFailure();
275
276	// Returns true if and only if the current test has a non-fatal failure.
277	static bool HasNonfatalFailure();
278
279	// Returns true if and only if the current test was skipped.
280	static bool IsSkipped();
281
282	// Returns true if and only if the current test has a (either fatal or
283	// non-fatal) failure.
284	static bool HasFailure() { return HasFatalFailure() || HasNonfatalFailure(); }
285
286	// Logs a property for the current test, test suite, or for the entire
287	// invocation of the test program when used outside of the context of a
288	// test suite. Only the last value for a given key is remembered. These
289	// are public static so they can be called from utility functions that are
290	// not members of the test fixture. Calls to RecordProperty made during
291	// lifespan of the test (from the moment its constructor starts to the
292	// moment its destructor finishes) will be output in XML as attributes of
293	// the <testcase> element. Properties recorded from fixture's
294	// SetUpTestSuite or TearDownTestSuite are logged as attributes of the
295	// corresponding <testsuite> element. Calls to RecordProperty made in the
296	// global context (before or after invocation of RUN_ALL_TESTS and from
297	// SetUp/TearDown method of Environment objects registered with Google
298	// Test) will be output as attributes of the <testsuites> element.
299	static void RecordProperty(const std::string& key, const std::string& value);
300	// We do not define a custom serialization except for values that can be
301	// converted to int64_t, but other values could be logged in this way.
302	template <typename T, std::enable_if_t<std::is_convertible<T, int64_t>::value,
303	bool> = true>
304	static void RecordProperty(const std::string& key, const T& value) {
305	RecordProperty(key, (Message() << value).GetString());
306	}
307
308	protected:
309	// Creates a Test object.
310	Test();
311
312	// Sets up the test fixture.
313	virtual void SetUp();
314
315	// Tears down the test fixture.
316	virtual void TearDown();
317
318	private:
319	// Returns true if and only if the current test has the same fixture class
320	// as the first test in the current test suite.
321	static bool HasSameFixtureClass();
322
323	// Runs the test after the test fixture has been set up.
324	//
325	// A sub-class must implement this to define the test logic.
326	//
327	// DO NOT OVERRIDE THIS FUNCTION DIRECTLY IN A USER PROGRAM.
328	// Instead, use the TEST or TEST_F macro.
329	virtual void TestBody() = 0;
330
331	// Sets up, executes, and tears down the test.
332	void Run();
333
334	// Deletes self. We deliberately pick an unusual name for this
335	// internal method to avoid clashing with names used in user TESTs.
336	void DeleteSelf_() { delete this; }
337
338	const std::unique_ptr<GTEST_FLAG_SAVER_> gtest_flag_saver_;
339
340	// Often a user misspells SetUp() as Setup() and spends a long time
341	// wondering why it is never called by Google Test. The declaration of
342	// the following method is solely for catching such an error at
343	// compile time:
344	//
345	// - The return type is deliberately chosen to be not void, so it
346	// will be a conflict if void Setup() is declared in the user's
347	// test fixture.
348	//
349	// - This method is private, so it will be another compiler error
350	// if the method is called from the user's test fixture.
351	//
352	// DO NOT OVERRIDE THIS FUNCTION.
353	//
354	// If you see an error about overriding the following function or
355	// about it being private, you have mis-spelled SetUp() as Setup().
356	struct Setup_should_be_spelled_SetUp {};
357	virtual Setup_should_be_spelled_SetUp* Setup() { return nullptr; }
358
359	// We disallow copying Tests.
360	Test(const Test&) = delete;
361	Test& operator=(const Test&) = delete;
362	};
363
364	typedef internal::TimeInMillis TimeInMillis;
365
366	// A copyable object representing a user specified test property which can be
367	// output as a key/value string pair.
368	//
369	// Don't inherit from TestProperty as its destructor is not virtual.
370	class TestProperty {
371	public:
372	// C'tor. TestProperty does NOT have a default constructor.
373	// Always use this constructor (with parameters) to create a
374	// TestProperty object.
375	TestProperty(const std::string& a_key, const std::string& a_value)
376	: key_(a_key), value_(a_value) {}
377
378	// Gets the user supplied key.
379	const char* key() const { return key_.c_str(); }
380
381	// Gets the user supplied value.
382	const char* value() const { return value_.c_str(); }
383
384	// Sets a new value, overriding the one supplied in the constructor.
385	void SetValue(const std::string& new_value) { value_ = new_value; }
386
387	private:
388	// The key supplied by the user.
389	std::string key_;
390	// The value supplied by the user.
391	std::string value_;
392	};
393
394	// The result of a single Test. This includes a list of
395	// TestPartResults, a list of TestProperties, a count of how many
396	// death tests there are in the Test, and how much time it took to run
397	// the Test.
398	//
399	// TestResult is not copyable.
400	class GTEST_API_ TestResult {
401	public:
402	// Creates an empty TestResult.
403	TestResult();
404
405	// D'tor. Do not inherit from TestResult.
406	~TestResult();
407
408	// Gets the number of all test parts. This is the sum of the number
409	// of successful test parts and the number of failed test parts.
410	int total_part_count() const;
411
412	// Returns the number of the test properties.
413	int test_property_count() const;
414
415	// Returns true if and only if the test passed (i.e. no test part failed).
416	bool Passed() const { return !Skipped() && !Failed(); }
417
418	// Returns true if and only if the test was skipped.
419	bool Skipped() const;
420
421	// Returns true if and only if the test failed.
422	bool Failed() const;
423
424	// Returns true if and only if the test fatally failed.
425	bool HasFatalFailure() const;
426
427	// Returns true if and only if the test has a non-fatal failure.
428	bool HasNonfatalFailure() const;
429
430	// Returns the elapsed time, in milliseconds.
431	TimeInMillis elapsed_time() const { return elapsed_time_; }
432
433	// Gets the time of the test case start, in ms from the start of the
434	// UNIX epoch.
435	TimeInMillis start_timestamp() const { return start_timestamp_; }
436
437	// Returns the i-th test part result among all the results. i can range from 0
438	// to total_part_count() - 1. If i is not in that range, aborts the program.
439	const TestPartResult& GetTestPartResult(int i) const;
440
441	// Returns the i-th test property. i can range from 0 to
442	// test_property_count() - 1. If i is not in that range, aborts the
443	// program.
444	const TestProperty& GetTestProperty(int i) const;
445
446	private:
447	friend class TestInfo;
448	friend class TestSuite;
449	friend class UnitTest;
450	friend class internal::DefaultGlobalTestPartResultReporter;
451	friend class internal::ExecDeathTest;
452	friend class internal::TestResultAccessor;
453	friend class internal::UnitTestImpl;
454	friend class internal::WindowsDeathTest;
455	friend class internal::FuchsiaDeathTest;
456
457	// Gets the vector of TestPartResults.
458	const std::vector<TestPartResult>& test_part_results() const {
459	return test_part_results_;
460	}
461
462	// Gets the vector of TestProperties.
463	const std::vector<TestProperty>& test_properties() const {
464	return test_properties_;
465	}
466
467	// Sets the start time.
468	void set_start_timestamp(TimeInMillis start) { start_timestamp_ = start; }
469
470	// Sets the elapsed time.
471	void set_elapsed_time(TimeInMillis elapsed) { elapsed_time_ = elapsed; }
472
473	// Adds a test property to the list. The property is validated and may add
474	// a non-fatal failure if invalid (e.g., if it conflicts with reserved
475	// key names). If a property is already recorded for the same key, the
476	// value will be updated, rather than storing multiple values for the same
477	// key. xml_element specifies the element for which the property is being
478	// recorded and is used for validation.
479	void RecordProperty(const std::string& xml_element,
480	const TestProperty& test_property);
481
482	// Adds a failure if the key is a reserved attribute of Google Test
483	// testsuite tags. Returns true if the property is valid.
484	// FIXME: Validate attribute names are legal and human readable.
485	static bool ValidateTestProperty(const std::string& xml_element,
486	const TestProperty& test_property);
487
488	// Adds a test part result to the list.
489	void AddTestPartResult(const TestPartResult& test_part_result);
490
491	// Returns the death test count.
492	int death_test_count() const { return death_test_count_; }
493
494	// Increments the death test count, returning the new count.
495	int increment_death_test_count() { return ++death_test_count_; }
496
497	// Clears the test part results.
498	void ClearTestPartResults();
499
500	// Clears the object.
501	void Clear();
502
503	// Protects mutable state of the property vector and of owned
504	// properties, whose values may be updated.
505	internal::Mutex test_properties_mutex_;
506
507	// The vector of TestPartResults
508	std::vector<TestPartResult> test_part_results_;
509	// The vector of TestProperties
510	std::vector<TestProperty> test_properties_;
511	// Running count of death tests.
512	int death_test_count_;
513	// The start time, in milliseconds since UNIX Epoch.
514	TimeInMillis start_timestamp_;
515	// The elapsed time, in milliseconds.
516	TimeInMillis elapsed_time_;
517
518	// We disallow copying TestResult.
519	TestResult(const TestResult&) = delete;
520	TestResult& operator=(const TestResult&) = delete;
521	}; // class TestResult
522
523	// A TestInfo object stores the following information about a test:
524	//
525	// Test suite name
526	// Test name
527	// Whether the test should be run
528	// A function pointer that creates the test object when invoked
529	// Test result
530	//
531	// The constructor of TestInfo registers itself with the UnitTest
532	// singleton such that the RUN_ALL_TESTS() macro knows which tests to
533	// run.
534	class GTEST_API_ TestInfo {
535	public:
536	// Destructs a TestInfo object. This function is not virtual, so
537	// don't inherit from TestInfo.
538	~TestInfo();
539
540	// Returns the test suite name.
541	const char* test_suite_name() const { return test_suite_name_.c_str(); }
542
543	// Legacy API is deprecated but still available
544	#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
545	const char* test_case_name() const { return test_suite_name(); }
546	#endif // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
547
548	// Returns the test name.
549	const char* name() const { return name_.c_str(); }
550
551	// Returns the name of the parameter type, or NULL if this is not a typed
552	// or a type-parameterized test.
553	const char* type_param() const {
554	if (type_param_ != nullptr) return type_param_->c_str();
555	return nullptr;
556	}
557
558	// Returns the text representation of the value parameter, or NULL if this
559	// is not a value-parameterized test.
560	const char* value_param() const {
561	if (value_param_ != nullptr) return value_param_->c_str();
562	return nullptr;
563	}
564
565	// Returns the file name where this test is defined.
566	const char* file() const { return location_.file.c_str(); }
567
568	// Returns the line where this test is defined.
569	int line() const { return location_.line; }
570
571	// Return true if this test should not be run because it's in another shard.
572	bool is_in_another_shard() const { return is_in_another_shard_; }
573
574	// Returns true if this test should run, that is if the test is not
575	// disabled (or it is disabled but the also_run_disabled_tests flag has
576	// been specified) and its full name matches the user-specified filter.
577	//
578	// Google Test allows the user to filter the tests by their full names.
579	// The full name of a test Bar in test suite Foo is defined as
580	// "Foo.Bar". Only the tests that match the filter will run.
581	//
582	// A filter is a colon-separated list of glob (not regex) patterns,
583	// optionally followed by a '-' and a colon-separated list of
584	// negative patterns (tests to exclude). A test is run if it
585	// matches one of the positive patterns and does not match any of
586	// the negative patterns.
587	//
588	// For example, *A*:Foo.* is a filter that matches any string that
589	// contains the character 'A' or starts with "Foo.".
590	bool should_run() const { return should_run_; }
591
592	// Returns true if and only if this test will appear in the XML report.
593	bool is_reportable() const {
594	// The XML report includes tests matching the filter, excluding those
595	// run in other shards.
596	return matches_filter_ && !is_in_another_shard_;
597	}
598
599	// Returns the result of the test.
600	const TestResult* result() const { return &result_; }
601
602	private:
603	#ifdef GTEST_HAS_DEATH_TEST
604	friend class internal::DefaultDeathTestFactory;
605	#endif // GTEST_HAS_DEATH_TEST
606	friend class Test;
607	friend class TestSuite;
608	friend class internal::UnitTestImpl;
609	friend class internal::StreamingListenerTest;
610	friend TestInfo* internal::MakeAndRegisterTestInfo(
611	const char* test_suite_name, const char* name, const char* type_param,
612	const char* value_param, internal::CodeLocation code_location,
613	internal::TypeId fixture_class_id, internal::SetUpTestSuiteFunc set_up_tc,
614	internal::TearDownTestSuiteFunc tear_down_tc,
615	internal::TestFactoryBase* factory);
616
617	// Constructs a TestInfo object. The newly constructed instance assumes
618	// ownership of the factory object.
619	TestInfo(const std::string& test_suite_name, const std::string& name,
620	const char* a_type_param, // NULL if not a type-parameterized test
621	const char* a_value_param, // NULL if not a value-parameterized test
622	internal::CodeLocation a_code_location,
623	internal::TypeId fixture_class_id,
624	internal::TestFactoryBase* factory);
625
626	// Increments the number of death tests encountered in this test so
627	// far.
628	int increment_death_test_count() {
629	return result_.increment_death_test_count();
630	}
631
632	// Creates the test object, runs it, records its result, and then
633	// deletes it.
634	void Run();
635
636	// Skip and records the test result for this object.
637	void Skip();
638
639	static void ClearTestResult(TestInfo* test_info) {
640	test_info->result_.Clear();
641	}
642
643	// These fields are immutable properties of the test.
644	const std::string test_suite_name_; // test suite name
645	const std::string name_; // Test name
646	// Name of the parameter type, or NULL if this is not a typed or a
647	// type-parameterized test.
648	const std::unique_ptr<const ::std::string> type_param_;
649	// Text representation of the value parameter, or NULL if this is not a
650	// value-parameterized test.
651	const std::unique_ptr<const ::std::string> value_param_;
652	internal::CodeLocation location_;
653	const internal::TypeId fixture_class_id_; // ID of the test fixture class
654	bool should_run_; // True if and only if this test should run
655	bool is_disabled_; // True if and only if this test is disabled
656	bool matches_filter_; // True if this test matches the
657	// user-specified filter.
658	bool is_in_another_shard_; // Will be run in another shard.
659	internal::TestFactoryBase* const factory_; // The factory that creates
660	// the test object
661
662	// This field is mutable and needs to be reset before running the
663	// test for the second time.
664	TestResult result_;
665
666	TestInfo(const TestInfo&) = delete;
667	TestInfo& operator=(const TestInfo&) = delete;
668	};
669
670	// A test suite, which consists of a vector of TestInfos.
671	//
672	// TestSuite is not copyable.
673	class GTEST_API_ TestSuite {
674	public:
675	// Creates a TestSuite with the given name.
676	//
677	// TestSuite does NOT have a default constructor. Always use this
678	// constructor to create a TestSuite object.
679	//
680	// Arguments:
681	//
682	// name: name of the test suite
683	// a_type_param: the name of the test's type parameter, or NULL if
684	// this is not a type-parameterized test.
685	// set_up_tc: pointer to the function that sets up the test suite
686	// tear_down_tc: pointer to the function that tears down the test suite
687	TestSuite(const char* name, const char* a_type_param,
688	internal::SetUpTestSuiteFunc set_up_tc,
689	internal::TearDownTestSuiteFunc tear_down_tc);
690
691	// Destructor of TestSuite.
692	virtual ~TestSuite();
693
694	// Gets the name of the TestSuite.
695	const char* name() const { return name_.c_str(); }
696
697	// Returns the name of the parameter type, or NULL if this is not a
698	// type-parameterized test suite.
699	const char* type_param() const {
700	if (type_param_ != nullptr) return type_param_->c_str();
701	return nullptr;
702	}
703
704	// Returns true if any test in this test suite should run.
705	bool should_run() const { return should_run_; }
706
707	// Gets the number of successful tests in this test suite.
708	int successful_test_count() const;
709
710	// Gets the number of skipped tests in this test suite.
711	int skipped_test_count() const;
712
713	// Gets the number of failed tests in this test suite.
714	int failed_test_count() const;
715
716	// Gets the number of disabled tests that will be reported in the XML report.
717	int reportable_disabled_test_count() const;
718
719	// Gets the number of disabled tests in this test suite.
720	int disabled_test_count() const;
721
722	// Gets the number of tests to be printed in the XML report.
723	int reportable_test_count() const;
724
725	// Get the number of tests in this test suite that should run.
726	int test_to_run_count() const;
727
728	// Gets the number of all tests in this test suite.
729	int total_test_count() const;
730
731	// Returns true if and only if the test suite passed.
732	bool Passed() const { return !Failed(); }
733
734	// Returns true if and only if the test suite failed.
735	bool Failed() const {
736	return failed_test_count() > 0 || ad_hoc_test_result().Failed();
737	}
738
739	// Returns the elapsed time, in milliseconds.
740	TimeInMillis elapsed_time() const { return elapsed_time_; }
741
742	// Gets the time of the test suite start, in ms from the start of the
743	// UNIX epoch.
744	TimeInMillis start_timestamp() const { return start_timestamp_; }
745
746	// Returns the i-th test among all the tests. i can range from 0 to
747	// total_test_count() - 1. If i is not in that range, returns NULL.
748	const TestInfo* GetTestInfo(int i) const;
749
750	// Returns the TestResult that holds test properties recorded during
751	// execution of SetUpTestSuite and TearDownTestSuite.
752	const TestResult& ad_hoc_test_result() const { return ad_hoc_test_result_; }
753
754	private:
755	friend class Test;
756	friend class internal::UnitTestImpl;
757
758	// Gets the (mutable) vector of TestInfos in this TestSuite.
759	std::vector<TestInfo*>& test_info_list() { return test_info_list_; }
760
761	// Gets the (immutable) vector of TestInfos in this TestSuite.
762	const std::vector<TestInfo*>& test_info_list() const {
763	return test_info_list_;
764	}
765
766	// Returns the i-th test among all the tests. i can range from 0 to
767	// total_test_count() - 1. If i is not in that range, returns NULL.
768	TestInfo* GetMutableTestInfo(int i);
769
770	// Sets the should_run member.
771	void set_should_run(bool should) { should_run_ = should; }
772
773	// Adds a TestInfo to this test suite. Will delete the TestInfo upon
774	// destruction of the TestSuite object.
775	void AddTestInfo(TestInfo* test_info);
776
777	// Clears the results of all tests in this test suite.
778	void ClearResult();
779
780	// Clears the results of all tests in the given test suite.
781	static void ClearTestSuiteResult(TestSuite* test_suite) {
782	test_suite->ClearResult();
783	}
784
785	// Runs every test in this TestSuite.
786	void Run();
787
788	// Skips the execution of tests under this TestSuite
789	void Skip();
790
791	// Runs SetUpTestSuite() for this TestSuite. This wrapper is needed
792	// for catching exceptions thrown from SetUpTestSuite().
793	void RunSetUpTestSuite() {
794	if (set_up_tc_ != nullptr) {
795	(*set_up_tc_)();
796	}
797	}
798
799	// Runs TearDownTestSuite() for this TestSuite. This wrapper is
800	// needed for catching exceptions thrown from TearDownTestSuite().
801	void RunTearDownTestSuite() {
802	if (tear_down_tc_ != nullptr) {
803	(*tear_down_tc_)();
804	}
805	}
806
807	// Returns true if and only if test passed.
808	static bool TestPassed(const TestInfo* test_info) {
809	return test_info->should_run() && test_info->result()->Passed();
810	}
811
812	// Returns true if and only if test skipped.
813	static bool TestSkipped(const TestInfo* test_info) {
814	return test_info->should_run() && test_info->result()->Skipped();
815	}
816
817	// Returns true if and only if test failed.
818	static bool TestFailed(const TestInfo* test_info) {
819	return test_info->should_run() && test_info->result()->Failed();
820	}
821
822	// Returns true if and only if the test is disabled and will be reported in
823	// the XML report.
824	static bool TestReportableDisabled(const TestInfo* test_info) {
825	return test_info->is_reportable() && test_info->is_disabled_;
826	}
827
828	// Returns true if and only if test is disabled.
829	static bool TestDisabled(const TestInfo* test_info) {
830	return test_info->is_disabled_;
831	}
832
833	// Returns true if and only if this test will appear in the XML report.
834	static bool TestReportable(const TestInfo* test_info) {
835	return test_info->is_reportable();
836	}
837
838	// Returns true if the given test should run.
839	static bool ShouldRunTest(const TestInfo* test_info) {
840	return test_info->should_run();
841	}
842
843	// Shuffles the tests in this test suite.
844	void ShuffleTests(internal::Random* random);
845
846	// Restores the test order to before the first shuffle.
847	void UnshuffleTests();
848
849	// Name of the test suite.
850	std::string name_;
851	// Name of the parameter type, or NULL if this is not a typed or a
852	// type-parameterized test.
853	const std::unique_ptr<const ::std::string> type_param_;
854	// The vector of TestInfos in their original order. It owns the
855	// elements in the vector.
856	std::vector<TestInfo*> test_info_list_;
857	// Provides a level of indirection for the test list to allow easy
858	// shuffling and restoring the test order. The i-th element in this
859	// vector is the index of the i-th test in the shuffled test list.
860	std::vector<int> test_indices_;
861	// Pointer to the function that sets up the test suite.
862	internal::SetUpTestSuiteFunc set_up_tc_;
863	// Pointer to the function that tears down the test suite.
864	internal::TearDownTestSuiteFunc tear_down_tc_;
865	// True if and only if any test in this test suite should run.
866	bool should_run_;
867	// The start time, in milliseconds since UNIX Epoch.
868	TimeInMillis start_timestamp_;
869	// Elapsed time, in milliseconds.
870	TimeInMillis elapsed_time_;
871	// Holds test properties recorded during execution of SetUpTestSuite and
872	// TearDownTestSuite.
873	TestResult ad_hoc_test_result_;
874
875	// We disallow copying TestSuites.
876	TestSuite(const TestSuite&) = delete;
877	TestSuite& operator=(const TestSuite&) = delete;
878	};
879
880	// An Environment object is capable of setting up and tearing down an
881	// environment. You should subclass this to define your own
882	// environment(s).
883	//
884	// An Environment object does the set-up and tear-down in virtual
885	// methods SetUp() and TearDown() instead of the constructor and the
886	// destructor, as:
887	//
888	// 1. You cannot safely throw from a destructor. This is a problem
889	// as in some cases Google Test is used where exceptions are enabled, and
890	// we may want to implement ASSERT_* using exceptions where they are
891	// available.
892	// 2. You cannot use ASSERT_* directly in a constructor or
893	// destructor.
894	class Environment {
895	public:
896	// The d'tor is virtual as we need to subclass Environment.
897	virtual ~Environment() = default;
898
899	// Override this to define how to set up the environment.
900	virtual void SetUp() {}
901
902	// Override this to define how to tear down the environment.
903	virtual void TearDown() {}
904
905	private:
906	// If you see an error about overriding the following function or
907	// about it being private, you have mis-spelled SetUp() as Setup().
908	struct Setup_should_be_spelled_SetUp {};
909	virtual Setup_should_be_spelled_SetUp* Setup() { return nullptr; }
910	};
911
912	#if GTEST_HAS_EXCEPTIONS
913
914	// Exception which can be thrown from TestEventListener::OnTestPartResult.
915	class GTEST_API_ AssertionException
916	: public internal::GoogleTestFailureException {
917	public:
918	explicit AssertionException(const TestPartResult& result)
919	: GoogleTestFailureException(result) {}
920	};
921
922	#endif // GTEST_HAS_EXCEPTIONS
923
924	// The interface for tracing execution of tests. The methods are organized in
925	// the order the corresponding events are fired.
926	class TestEventListener {
927	public:
928	virtual ~TestEventListener() = default;
929
930	// Fired before any test activity starts.
931	virtual void OnTestProgramStart(const UnitTest& unit_test) = 0;
932
933	// Fired before each iteration of tests starts. There may be more than
934	// one iteration if GTEST_FLAG(repeat) is set. iteration is the iteration
935	// index, starting from 0.
936	virtual void OnTestIterationStart(const UnitTest& unit_test,
937	int iteration) = 0;
938
939	// Fired before environment set-up for each iteration of tests starts.
940	virtual void OnEnvironmentsSetUpStart(const UnitTest& unit_test) = 0;
941
942	// Fired after environment set-up for each iteration of tests ends.
943	virtual void OnEnvironmentsSetUpEnd(const UnitTest& unit_test) = 0;
944
945	// Fired before the test suite starts.
946	virtual void OnTestSuiteStart(const TestSuite& /*test_suite*/) {}
947
948	// Legacy API is deprecated but still available
949	#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
950	virtual void OnTestCaseStart(const TestCase& /*test_case*/) {}
951	#endif // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
952
953	// Fired before the test starts.
954	virtual void OnTestStart(const TestInfo& test_info) = 0;
955
956	// Fired when a test is disabled
957	virtual void OnTestDisabled(const TestInfo& /*test_info*/) {}
958
959	// Fired after a failed assertion or a SUCCEED() invocation.
960	// If you want to throw an exception from this function to skip to the next
961	// TEST, it must be AssertionException defined above, or inherited from it.
962	virtual void OnTestPartResult(const TestPartResult& test_part_result) = 0;
963
964	// Fired after the test ends.
965	virtual void OnTestEnd(const TestInfo& test_info) = 0;
966
967	// Fired after the test suite ends.
968	virtual void OnTestSuiteEnd(const TestSuite& /*test_suite*/) {}
969
970	// Legacy API is deprecated but still available
971	#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
972	virtual void OnTestCaseEnd(const TestCase& /*test_case*/) {}
973	#endif // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
974
975	// Fired before environment tear-down for each iteration of tests starts.
976	virtual void OnEnvironmentsTearDownStart(const UnitTest& unit_test) = 0;
977
978	// Fired after environment tear-down for each iteration of tests ends.
979	virtual void OnEnvironmentsTearDownEnd(const UnitTest& unit_test) = 0;
980
981	// Fired after each iteration of tests finishes.
982	virtual void OnTestIterationEnd(const UnitTest& unit_test, int iteration) = 0;
983
984	// Fired after all test activities have ended.
985	virtual void OnTestProgramEnd(const UnitTest& unit_test) = 0;
986	};
987
988	// The convenience class for users who need to override just one or two
989	// methods and are not concerned that a possible change to a signature of
990	// the methods they override will not be caught during the build. For
991	// comments about each method please see the definition of TestEventListener
992	// above.
993	class EmptyTestEventListener : public TestEventListener {
994	public:
995	void OnTestProgramStart(const UnitTest& /*unit_test*/) override {}
996	void OnTestIterationStart(const UnitTest& /*unit_test*/,
997	int /*iteration*/) override {}
998	void OnEnvironmentsSetUpStart(const UnitTest& /*unit_test*/) override {}
999	void OnEnvironmentsSetUpEnd(const UnitTest& /*unit_test*/) override {}
1000	void OnTestSuiteStart(const TestSuite& /*test_suite*/) override {}
1001	// Legacy API is deprecated but still available
1002	#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
1003	void OnTestCaseStart(const TestCase& /*test_case*/) override {}
1004	#endif // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
1005
1006	void OnTestStart(const TestInfo& /*test_info*/) override {}
1007	void OnTestDisabled(const TestInfo& /*test_info*/) override {}
1008	void OnTestPartResult(const TestPartResult& /*test_part_result*/) override {}
1009	void OnTestEnd(const TestInfo& /*test_info*/) override {}
1010	void OnTestSuiteEnd(const TestSuite& /*test_suite*/) override {}
1011	#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
1012	void OnTestCaseEnd(const TestCase& /*test_case*/) override {}
1013	#endif // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
1014
1015	void OnEnvironmentsTearDownStart(const UnitTest& /*unit_test*/) override {}
1016	void OnEnvironmentsTearDownEnd(const UnitTest& /*unit_test*/) override {}
1017	void OnTestIterationEnd(const UnitTest& /*unit_test*/,
1018	int /*iteration*/) override {}
1019	void OnTestProgramEnd(const UnitTest& /*unit_test*/) override {}
1020	};
1021
1022	// TestEventListeners lets users add listeners to track events in Google Test.
1023	class GTEST_API_ TestEventListeners {
1024	public:
1025	TestEventListeners();
1026	~TestEventListeners();
1027
1028	// Appends an event listener to the end of the list. Google Test assumes
1029	// the ownership of the listener (i.e. it will delete the listener when
1030	// the test program finishes).
1031	void Append(TestEventListener* listener);
1032
1033	// Removes the given event listener from the list and returns it. It then
1034	// becomes the caller's responsibility to delete the listener. Returns
1035	// NULL if the listener is not found in the list.
1036	TestEventListener* Release(TestEventListener* listener);
1037
1038	// Returns the standard listener responsible for the default console
1039	// output. Can be removed from the listeners list to shut down default
1040	// console output. Note that removing this object from the listener list
1041	// with Release transfers its ownership to the caller and makes this
1042	// function return NULL the next time.
1043	TestEventListener* default_result_printer() const {
1044	return default_result_printer_;
1045	}
1046
1047	// Returns the standard listener responsible for the default XML output
1048	// controlled by the --gtest_output=xml flag. Can be removed from the
1049	// listeners list by users who want to shut down the default XML output
1050	// controlled by this flag and substitute it with custom one. Note that
1051	// removing this object from the listener list with Release transfers its
1052	// ownership to the caller and makes this function return NULL the next
1053	// time.
1054	TestEventListener* default_xml_generator() const {
1055	return default_xml_generator_;
1056	}
1057
1058	// Controls whether events will be forwarded by the repeater to the
1059	// listeners in the list.
1060	void SuppressEventForwarding(bool);
1061
1062	private:
1063	friend class TestSuite;
1064	friend class TestInfo;
1065	friend class internal::DefaultGlobalTestPartResultReporter;
1066	friend class internal::NoExecDeathTest;
1067	friend class internal::TestEventListenersAccessor;
1068	friend class internal::UnitTestImpl;
1069
1070	// Returns repeater that broadcasts the TestEventListener events to all
1071	// subscribers.
1072	TestEventListener* repeater();
1073
1074	// Sets the default_result_printer attribute to the provided listener.
1075	// The listener is also added to the listener list and previous
1076	// default_result_printer is removed from it and deleted. The listener can
1077	// also be NULL in which case it will not be added to the list. Does
1078	// nothing if the previous and the current listener objects are the same.
1079	void SetDefaultResultPrinter(TestEventListener* listener);
1080
1081	// Sets the default_xml_generator attribute to the provided listener. The
1082	// listener is also added to the listener list and previous
1083	// default_xml_generator is removed from it and deleted. The listener can
1084	// also be NULL in which case it will not be added to the list. Does
1085	// nothing if the previous and the current listener objects are the same.
1086	void SetDefaultXmlGenerator(TestEventListener* listener);
1087
1088	// Controls whether events will be forwarded by the repeater to the
1089	// listeners in the list.
1090	bool EventForwardingEnabled() const;
1091
1092	// The actual list of listeners.
1093	internal::TestEventRepeater* repeater_;
1094	// Listener responsible for the standard result output.
1095	TestEventListener* default_result_printer_;
1096	// Listener responsible for the creation of the XML output file.
1097	TestEventListener* default_xml_generator_;
1098
1099	// We disallow copying TestEventListeners.
1100	TestEventListeners(const TestEventListeners&) = delete;
1101	TestEventListeners& operator=(const TestEventListeners&) = delete;
1102	};
1103
1104	// A UnitTest consists of a vector of TestSuites.
1105	//
1106	// This is a singleton class. The only instance of UnitTest is
1107	// created when UnitTest::GetInstance() is first called. This
1108	// instance is never deleted.
1109	//
1110	// UnitTest is not copyable.
1111	//
1112	// This class is thread-safe as long as the methods are called
1113	// according to their specification.
1114	class GTEST_API_ UnitTest {
1115	public:
1116	// Gets the singleton UnitTest object. The first time this method
1117	// is called, a UnitTest object is constructed and returned.
1118	// Consecutive calls will return the same object.
1119	static UnitTest* GetInstance();
1120
1121	// Runs all tests in this UnitTest object and prints the result.
1122	// Returns 0 if successful, or 1 otherwise.
1123	//
1124	// This method can only be called from the main thread.
1125	//
1126	// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
1127	int Run() GTEST_MUST_USE_RESULT_;
1128
1129	// Returns the working directory when the first TEST() or TEST_F()
1130	// was executed. The UnitTest object owns the string.
1131	const char* original_working_dir() const;
1132
1133	// Returns the TestSuite object for the test that's currently running,
1134	// or NULL if no test is running.
1135	const TestSuite* current_test_suite() const GTEST_LOCK_EXCLUDED_(mutex_);
1136
1137	// Legacy API is still available but deprecated
1138	#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
1139	const TestCase* current_test_case() const GTEST_LOCK_EXCLUDED_(mutex_);
1140	#endif
1141
1142	// Returns the TestInfo object for the test that's currently running,
1143	// or NULL if no test is running.
1144	const TestInfo* current_test_info() const GTEST_LOCK_EXCLUDED_(mutex_);
1145
1146	// Returns the random seed used at the start of the current test run.
1147	int random_seed() const;
1148
1149	// Returns the ParameterizedTestSuiteRegistry object used to keep track of
1150	// value-parameterized tests and instantiate and register them.
1151	//
1152	// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
1153	internal::ParameterizedTestSuiteRegistry& parameterized_test_registry()
1154	GTEST_LOCK_EXCLUDED_(mutex_);
1155
1156	// Gets the number of successful test suites.
1157	int successful_test_suite_count() const;
1158
1159	// Gets the number of failed test suites.
1160	int failed_test_suite_count() const;
1161
1162	// Gets the number of all test suites.
1163	int total_test_suite_count() const;
1164
1165	// Gets the number of all test suites that contain at least one test
1166	// that should run.
1167	int test_suite_to_run_count() const;
1168
1169	// Legacy API is deprecated but still available
1170	#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
1171	int successful_test_case_count() const;
1172	int failed_test_case_count() const;
1173	int total_test_case_count() const;
1174	int test_case_to_run_count() const;
1175	#endif // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
1176
1177	// Gets the number of successful tests.
1178	int successful_test_count() const;
1179
1180	// Gets the number of skipped tests.
1181	int skipped_test_count() const;
1182
1183	// Gets the number of failed tests.
1184	int failed_test_count() const;
1185
1186	// Gets the number of disabled tests that will be reported in the XML report.
1187	int reportable_disabled_test_count() const;
1188
1189	// Gets the number of disabled tests.
1190	int disabled_test_count() const;
1191
1192	// Gets the number of tests to be printed in the XML report.
1193	int reportable_test_count() const;
1194
1195	// Gets the number of all tests.
1196	int total_test_count() const;
1197
1198	// Gets the number of tests that should run.
1199	int test_to_run_count() const;
1200
1201	// Gets the time of the test program start, in ms from the start of the
1202	// UNIX epoch.
1203	TimeInMillis start_timestamp() const;
1204
1205	// Gets the elapsed time, in milliseconds.
1206	TimeInMillis elapsed_time() const;
1207
1208	// Returns true if and only if the unit test passed (i.e. all test suites
1209	// passed).
1210	bool Passed() const;
1211
1212	// Returns true if and only if the unit test failed (i.e. some test suite
1213	// failed or something outside of all tests failed).
1214	bool Failed() const;
1215
1216	// Gets the i-th test suite among all the test suites. i can range from 0 to
1217	// total_test_suite_count() - 1. If i is not in that range, returns NULL.
1218	const TestSuite* GetTestSuite(int i) const;
1219
1220	// Legacy API is deprecated but still available
1221	#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
1222	const TestCase* GetTestCase(int i) const;
1223	#endif // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
1224
1225	// Returns the TestResult containing information on test failures and
1226	// properties logged outside of individual test suites.
1227	const TestResult& ad_hoc_test_result() const;
1228
1229	// Returns the list of event listeners that can be used to track events
1230	// inside Google Test.
1231	TestEventListeners& listeners();
1232
1233	private:
1234	// Registers and returns a global test environment. When a test
1235	// program is run, all global test environments will be set-up in
1236	// the order they were registered. After all tests in the program
1237	// have finished, all global test environments will be torn-down in
1238	// the *reverse* order they were registered.
1239	//
1240	// The UnitTest object takes ownership of the given environment.
1241	//
1242	// This method can only be called from the main thread.
1243	Environment* AddEnvironment(Environment* env);
1244
1245	// Adds a TestPartResult to the current TestResult object. All
1246	// Google Test assertion macros (e.g. ASSERT_TRUE, EXPECT_EQ, etc)
1247	// eventually call this to report their results. The user code
1248	// should use the assertion macros instead of calling this directly.
1249	void AddTestPartResult(TestPartResult::Type result_type,
1250	const char* file_name, int line_number,
1251	const std::string& message,
1252	const std::string& os_stack_trace)
1253	GTEST_LOCK_EXCLUDED_(mutex_);
1254
1255	// Adds a TestProperty to the current TestResult object when invoked from
1256	// inside a test, to current TestSuite's ad_hoc_test_result_ when invoked
1257	// from SetUpTestSuite or TearDownTestSuite, or to the global property set
1258	// when invoked elsewhere. If the result already contains a property with
1259	// the same key, the value will be updated.
1260	void RecordProperty(const std::string& key, const std::string& value);
1261
1262	// Gets the i-th test suite among all the test suites. i can range from 0 to
1263	// total_test_suite_count() - 1. If i is not in that range, returns NULL.
1264	TestSuite* GetMutableTestSuite(int i);
1265
1266	// Accessors for the implementation object.
1267	internal::UnitTestImpl* impl() { return impl_; }
1268	const internal::UnitTestImpl* impl() const { return impl_; }
1269
1270	// These classes and functions are friends as they need to access private
1271	// members of UnitTest.
1272	friend class ScopedTrace;
1273	friend class Test;
1274	friend class internal::AssertHelper;
1275	friend class internal::StreamingListenerTest;
1276	friend class internal::UnitTestRecordPropertyTestHelper;
1277	friend Environment* AddGlobalTestEnvironment(Environment* env);
1278	friend std::set<std::string>* internal::GetIgnoredParameterizedTestSuites();
1279	friend internal::UnitTestImpl* internal::GetUnitTestImpl();
1280	friend void internal::ReportFailureInUnknownLocation(
1281	TestPartResult::Type result_type, const std::string& message);
1282
1283	// Creates an empty UnitTest.
1284	UnitTest();
1285
1286	// D'tor
1287	virtual ~UnitTest();
1288
1289	// Pushes a trace defined by SCOPED_TRACE() on to the per-thread
1290	// Google Test trace stack.
1291	void PushGTestTrace(const internal::TraceInfo& trace)
1292	GTEST_LOCK_EXCLUDED_(mutex_);
1293
1294	// Pops a trace from the per-thread Google Test trace stack.
1295	void PopGTestTrace() GTEST_LOCK_EXCLUDED_(mutex_);
1296
1297	// Protects mutable state in *impl_. This is mutable as some const
1298	// methods need to lock it too.
1299	mutable internal::Mutex mutex_;
1300
1301	// Opaque implementation object. This field is never changed once
1302	// the object is constructed. We don't mark it as const here, as
1303	// doing so will cause a warning in the constructor of UnitTest.
1304	// Mutable state in *impl_ is protected by mutex_.
1305	internal::UnitTestImpl* impl_;
1306
1307	// We disallow copying UnitTest.
1308	UnitTest(const UnitTest&) = delete;
1309	UnitTest& operator=(const UnitTest&) = delete;
1310	};
1311
1312	// A convenient wrapper for adding an environment for the test
1313	// program.
1314	//
1315	// You should call this before RUN_ALL_TESTS() is called, probably in
1316	// main(). If you use gtest_main, you need to call this before main()
1317	// starts for it to take effect. For example, you can define a global
1318	// variable like this:
1319	//
1320	// testing::Environment* const foo_env =
1321	// testing::AddGlobalTestEnvironment(new FooEnvironment);
1322	//
1323	// However, we strongly recommend you to write your own main() and
1324	// call AddGlobalTestEnvironment() there, as relying on initialization
1325	// of global variables makes the code harder to read and may cause
1326	// problems when you register multiple environments from different
1327	// translation units and the environments have dependencies among them
1328	// (remember that the compiler doesn't guarantee the order in which
1329	// global variables from different translation units are initialized).
1330	inline Environment* AddGlobalTestEnvironment(Environment* env) {
1331	return UnitTest::GetInstance()->AddEnvironment(env);
1332	}
1333
1334	// Initializes Google Test. This must be called before calling
1335	// RUN_ALL_TESTS(). In particular, it parses a command line for the
1336	// flags that Google Test recognizes. Whenever a Google Test flag is
1337	// seen, it is removed from argv, and *argc is decremented.
1338	//
1339	// No value is returned. Instead, the Google Test flag variables are
1340	// updated.
1341	//
1342	// Calling the function for the second time has no user-visible effect.
1343	GTEST_API_ void InitGoogleTest(int* argc, char** argv);
1344
1345	// This overloaded version can be used in Windows programs compiled in
1346	// UNICODE mode.
1347	GTEST_API_ void InitGoogleTest(int* argc, wchar_t** argv);
1348
1349	// This overloaded version can be used on Arduino/embedded platforms where
1350	// there is no argc/argv.
1351	GTEST_API_ void InitGoogleTest();
1352
1353	namespace internal {
1354
1355	// Separate the error generating code from the code path to reduce the stack
1356	// frame size of CmpHelperEQ. This helps reduce the overhead of some sanitizers
1357	// when calling EXPECT_* in a tight loop.
1358	template <typename T1, typename T2>
1359	AssertionResult CmpHelperEQFailure(const char* lhs_expression,
1360	const char* rhs_expression, const T1& lhs,
1361	const T2& rhs) {
1362	return EqFailure(lhs_expression, rhs_expression,
1363	FormatForComparisonFailureMessage(lhs, rhs),
1364	FormatForComparisonFailureMessage(rhs, lhs), false);
1365	}
1366
1367	// This block of code defines operator==/!=
1368	// to block lexical scope lookup.
1369	// It prevents using invalid operator==/!= defined at namespace scope.
1370	struct faketype {};
1371	inline bool operator==(faketype, faketype) { return true; }
1372	inline bool operator!=(faketype, faketype) { return false; }
1373
1374	// The helper function for {ASSERT|EXPECT}_EQ.
1375	template <typename T1, typename T2>
1376	AssertionResult CmpHelperEQ(const char* lhs_expression,
1377	const char* rhs_expression, const T1& lhs,
1378	const T2& rhs) {
1379	if (lhs == rhs) {
1380	return AssertionSuccess();
1381	}
1382
1383	return CmpHelperEQFailure(lhs_expression, rhs_expression, lhs, rhs);
1384	}
1385
1386	class EqHelper {
1387	public:
1388	// This templatized version is for the general case.
1389	template <
1390	typename T1, typename T2,
1391	// Disable this overload for cases where one argument is a pointer
1392	// and the other is the null pointer constant.
1393	typename std::enable_if<!std::is_integral<T1>::value ||
1394	!std::is_pointer<T2>::value>::type* = nullptr>
1395	static AssertionResult Compare(const char* lhs_expression,
1396	const char* rhs_expression, const T1& lhs,
1397	const T2& rhs) {
1398	return CmpHelperEQ(lhs_expression, rhs_expression, lhs, rhs);
1399	}
1400
1401	// With this overloaded version, we allow anonymous enums to be used
1402	// in {ASSERT|EXPECT}_EQ when compiled with gcc 4, as anonymous
1403	// enums can be implicitly cast to BiggestInt.
1404	//
1405	// Even though its body looks the same as the above version, we
1406	// cannot merge the two, as it will make anonymous enums unhappy.
1407	static AssertionResult Compare(const char* lhs_expression,
1408	const char* rhs_expression, BiggestInt lhs,
1409	BiggestInt rhs) {
1410	return CmpHelperEQ(lhs_expression, rhs_expression, lhs, rhs);
1411	}
1412
1413	template <typename T>
1414	static AssertionResult Compare(
1415	const char* lhs_expression, const char* rhs_expression,
1416	// Handle cases where '0' is used as a null pointer literal.
1417	std::nullptr_t /* lhs */, T* rhs) {
1418	// We already know that 'lhs' is a null pointer.
1419	return CmpHelperEQ(lhs_expression, rhs_expression, static_cast<T*>(nullptr),
1420	rhs);
1421	}
1422	};
1423
1424	// Separate the error generating code from the code path to reduce the stack
1425	// frame size of CmpHelperOP. This helps reduce the overhead of some sanitizers
1426	// when calling EXPECT_OP in a tight loop.
1427	template <typename T1, typename T2>
1428	AssertionResult CmpHelperOpFailure(const char* expr1, const char* expr2,
1429	const T1& val1, const T2& val2,
1430	const char* op) {
1431	return AssertionFailure()
1432	<< "Expected: (" << expr1 << ") " << op << " (" << expr2
1433	<< "), actual: " << FormatForComparisonFailureMessage(val1, val2)
1434	<< " vs " << FormatForComparisonFailureMessage(val2, val1);
1435	}
1436
1437	// A macro for implementing the helper functions needed to implement
1438	// ASSERT_?? and EXPECT_??. It is here just to avoid copy-and-paste
1439	// of similar code.
1440	//
1441	// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
1442
1443	#define GTEST_IMPL_CMP_HELPER_(op_name, op) \
1444	template <typename T1, typename T2> \
1445	AssertionResult CmpHelper##op_name(const char* expr1, const char* expr2, \
1446	const T1& val1, const T2& val2) { \
1447	if (val1 op val2) { \
1448	return AssertionSuccess(); \
1449	} else { \
1450	return CmpHelperOpFailure(expr1, expr2, val1, val2, #op); \
1451	} \
1452	}
1453
1454	// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
1455
1456	// Implements the helper function for {ASSERT|EXPECT}_NE
1457	GTEST_IMPL_CMP_HELPER_(NE, !=)
1458	// Implements the helper function for {ASSERT|EXPECT}_LE
1459	GTEST_IMPL_CMP_HELPER_(LE, <=)
1460	// Implements the helper function for {ASSERT|EXPECT}_LT
1461	GTEST_IMPL_CMP_HELPER_(LT, <)
1462	// Implements the helper function for {ASSERT|EXPECT}_GE
1463	GTEST_IMPL_CMP_HELPER_(GE, >=)
1464	// Implements the helper function for {ASSERT|EXPECT}_GT
1465	GTEST_IMPL_CMP_HELPER_(GT, >)
1466
1467	#undef GTEST_IMPL_CMP_HELPER_
1468
1469	// The helper function for {ASSERT|EXPECT}_STREQ.
1470	//
1471	// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
1472	GTEST_API_ AssertionResult CmpHelperSTREQ(const char* s1_expression,
1473	const char* s2_expression,
1474	const char* s1, const char* s2);
1475
1476	// The helper function for {ASSERT|EXPECT}_STRCASEEQ.
1477	//
1478	// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
1479	GTEST_API_ AssertionResult CmpHelperSTRCASEEQ(const char* s1_expression,
1480	const char* s2_expression,
1481	const char* s1, const char* s2);
1482
1483	// The helper function for {ASSERT|EXPECT}_STRNE.
1484	//
1485	// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
1486	GTEST_API_ AssertionResult CmpHelperSTRNE(const char* s1_expression,
1487	const char* s2_expression,
1488	const char* s1, const char* s2);
1489
1490	// The helper function for {ASSERT|EXPECT}_STRCASENE.
1491	//
1492	// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
1493	GTEST_API_ AssertionResult CmpHelperSTRCASENE(const char* s1_expression,
1494	const char* s2_expression,
1495	const char* s1, const char* s2);
1496
1497	// Helper function for *_STREQ on wide strings.
1498	//
1499	// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
1500	GTEST_API_ AssertionResult CmpHelperSTREQ(const char* s1_expression,
1501	const char* s2_expression,
1502	const wchar_t* s1, const wchar_t* s2);
1503
1504	// Helper function for *_STRNE on wide strings.
1505	//
1506	// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
1507	GTEST_API_ AssertionResult CmpHelperSTRNE(const char* s1_expression,
1508	const char* s2_expression,
1509	const wchar_t* s1, const wchar_t* s2);
1510
1511	} // namespace internal
1512
1513	// IsSubstring() and IsNotSubstring() are intended to be used as the
1514	// first argument to {EXPECT,ASSERT}_PRED_FORMAT2(), not by
1515	// themselves. They check whether needle is a substring of haystack
1516	// (NULL is considered a substring of itself only), and return an
1517	// appropriate error message when they fail.
1518	//
1519	// The {needle,haystack}_expr arguments are the stringified
1520	// expressions that generated the two real arguments.
1521	GTEST_API_ AssertionResult IsSubstring(const char* needle_expr,
1522	const char* haystack_expr,
1523	const char* needle,
1524	const char* haystack);
1525	GTEST_API_ AssertionResult IsSubstring(const char* needle_expr,
1526	const char* haystack_expr,
1527	const wchar_t* needle,
1528	const wchar_t* haystack);
1529	GTEST_API_ AssertionResult IsNotSubstring(const char* needle_expr,
1530	const char* haystack_expr,
1531	const char* needle,
1532	const char* haystack);
1533	GTEST_API_ AssertionResult IsNotSubstring(const char* needle_expr,
1534	const char* haystack_expr,
1535	const wchar_t* needle,
1536	const wchar_t* haystack);
1537	GTEST_API_ AssertionResult IsSubstring(const char* needle_expr,
1538	const char* haystack_expr,
1539	const ::std::string& needle,
1540	const ::std::string& haystack);
1541	GTEST_API_ AssertionResult IsNotSubstring(const char* needle_expr,
1542	const char* haystack_expr,
1543	const ::std::string& needle,
1544	const ::std::string& haystack);
1545
1546	#if GTEST_HAS_STD_WSTRING
1547	GTEST_API_ AssertionResult IsSubstring(const char* needle_expr,
1548	const char* haystack_expr,
1549	const ::std::wstring& needle,
1550	const ::std::wstring& haystack);
1551	GTEST_API_ AssertionResult IsNotSubstring(const char* needle_expr,
1552	const char* haystack_expr,
1553	const ::std::wstring& needle,
1554	const ::std::wstring& haystack);
1555	#endif // GTEST_HAS_STD_WSTRING
1556
1557	namespace internal {
1558
1559	// Helper template function for comparing floating-points.
1560	//
1561	// Template parameter:
1562	//
1563	// RawType: the raw floating-point type (either float or double)
1564	//
1565	// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
1566	template <typename RawType>
1567	AssertionResult CmpHelperFloatingPointEQ(const char* lhs_expression,
1568	const char* rhs_expression,
1569	RawType lhs_value, RawType rhs_value) {
1570	const FloatingPoint<RawType> lhs(lhs_value), rhs(rhs_value);
1571
1572	if (lhs.AlmostEquals(rhs)) {
1573	return AssertionSuccess();
1574	}
1575
1576	::std::stringstream lhs_ss;
1577	lhs_ss << std::setprecision(std::numeric_limits<RawType>::digits10 + 2)
1578	<< lhs_value;
1579
1580	::std::stringstream rhs_ss;
1581	rhs_ss << std::setprecision(std::numeric_limits<RawType>::digits10 + 2)
1582	<< rhs_value;
1583
1584	return EqFailure(expected_expression: lhs_expression, actual_expression: rhs_expression,
1585	expected_value: StringStreamToString(stream: &lhs_ss), actual_value: StringStreamToString(stream: &rhs_ss),
1586	ignoring_case: false);
1587	}
1588
1589	// Helper function for implementing ASSERT_NEAR.
1590	//
1591	// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
1592	GTEST_API_ AssertionResult DoubleNearPredFormat(const char* expr1,
1593	const char* expr2,
1594	const char* abs_error_expr,
1595	double val1, double val2,
1596	double abs_error);
1597
1598	// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
1599	// A class that enables one to stream messages to assertion macros
1600	class GTEST_API_ AssertHelper {
1601	public:
1602	// Constructor.
1603	AssertHelper(TestPartResult::Type type, const char* file, int line,
1604	const char* message);
1605	~AssertHelper();
1606
1607	// Message assignment is a semantic trick to enable assertion
1608	// streaming; see the GTEST_MESSAGE_ macro below.
1609	void operator=(const Message& message) const;
1610
1611	private:
1612	// We put our data in a struct so that the size of the AssertHelper class can
1613	// be as small as possible. This is important because gcc is incapable of
1614	// re-using stack space even for temporary variables, so every EXPECT_EQ
1615	// reserves stack space for another AssertHelper.
1616	struct AssertHelperData {
1617	AssertHelperData(TestPartResult::Type t, const char* srcfile, int line_num,
1618	const char* msg)
1619	: type(t), file(srcfile), line(line_num), message(msg) {}
1620
1621	TestPartResult::Type const type;
1622	const char* const file;
1623	int const line;
1624	std::string const message;
1625
1626	private:
1627	AssertHelperData(const AssertHelperData&) = delete;
1628	AssertHelperData& operator=(const AssertHelperData&) = delete;
1629	};
1630
1631	AssertHelperData* const data_;
1632
1633	AssertHelper(const AssertHelper&) = delete;
1634	AssertHelper& operator=(const AssertHelper&) = delete;
1635	};
1636
1637	} // namespace internal
1638
1639	// The pure interface class that all value-parameterized tests inherit from.
1640	// A value-parameterized class must inherit from both ::testing::Test and
1641	// ::testing::WithParamInterface. In most cases that just means inheriting
1642	// from ::testing::TestWithParam, but more complicated test hierarchies
1643	// may need to inherit from Test and WithParamInterface at different levels.
1644	//
1645	// This interface has support for accessing the test parameter value via
1646	// the GetParam() method.
1647	//
1648	// Use it with one of the parameter generator defining functions, like Range(),
1649	// Values(), ValuesIn(), Bool(), Combine(), and ConvertGenerator<T>().
1650	//
1651	// class FooTest : public ::testing::TestWithParam<int> {
1652	// protected:
1653	// FooTest() {
1654	// // Can use GetParam() here.
1655	// }
1656	// ~FooTest() override {
1657	// // Can use GetParam() here.
1658	// }
1659	// void SetUp() override {
1660	// // Can use GetParam() here.
1661	// }
1662	// void TearDown override {
1663	// // Can use GetParam() here.
1664	// }
1665	// };
1666	// TEST_P(FooTest, DoesBar) {
1667	// // Can use GetParam() method here.
1668	// Foo foo;
1669	// ASSERT_TRUE(foo.DoesBar(GetParam()));
1670	// }
1671	// INSTANTIATE_TEST_SUITE_P(OneToTenRange, FooTest, ::testing::Range(1, 10));
1672
1673	template <typename T>
1674	class WithParamInterface {
1675	public:
1676	typedef T ParamType;
1677	virtual ~WithParamInterface() = default;
1678
1679	// The current parameter value. Is also available in the test fixture's
1680	// constructor.
1681	static const ParamType& GetParam() {
1682	GTEST_CHECK_(parameter_ != nullptr)
1683	<< "GetParam() can only be called inside a value-parameterized test "
1684	<< "-- did you intend to write TEST_P instead of TEST_F?";
1685	return *parameter_;
1686	}
1687
1688	private:
1689	// Sets parameter value. The caller is responsible for making sure the value
1690	// remains alive and unchanged throughout the current test.
1691	static void SetParam(const ParamType* parameter) { parameter_ = parameter; }
1692
1693	// Static value used for accessing parameter during a test lifetime.
1694	static const ParamType* parameter_;
1695
1696	// TestClass must be a subclass of WithParamInterface<T> and Test.
1697	template <class TestClass>
1698	friend class internal::ParameterizedTestFactory;
1699	};
1700
1701	template <typename T>
1702	const T* WithParamInterface<T>::parameter_ = nullptr;
1703
1704	// Most value-parameterized classes can ignore the existence of
1705	// WithParamInterface, and can just inherit from ::testing::TestWithParam.
1706
1707	template <typename T>
1708	class TestWithParam : public Test, public WithParamInterface<T> {};
1709
1710	// Macros for indicating success/failure in test code.
1711
1712	// Skips test in runtime.
1713	// Skipping test aborts current function.
1714	// Skipped tests are neither successful nor failed.
1715	#define GTEST_SKIP() GTEST_SKIP_("")
1716
1717	// ADD_FAILURE unconditionally adds a failure to the current test.
1718	// SUCCEED generates a success - it doesn't automatically make the
1719	// current test successful, as a test is only successful when it has
1720	// no failure.
1721	//
1722	// EXPECT_* verifies that a certain condition is satisfied. If not,
1723	// it behaves like ADD_FAILURE. In particular:
1724	//
1725	// EXPECT_TRUE verifies that a Boolean condition is true.
1726	// EXPECT_FALSE verifies that a Boolean condition is false.
1727	//
1728	// FAIL and ASSERT_* are similar to ADD_FAILURE and EXPECT_*, except
1729	// that they will also abort the current function on failure. People
1730	// usually want the fail-fast behavior of FAIL and ASSERT_*, but those
1731	// writing data-driven tests often find themselves using ADD_FAILURE
1732	// and EXPECT_* more.
1733
1734	// Generates a nonfatal failure with a generic message.
1735	#define ADD_FAILURE() GTEST_NONFATAL_FAILURE_("Failed")
1736
1737	// Generates a nonfatal failure at the given source file location with
1738	// a generic message.
1739	#define ADD_FAILURE_AT(file, line) \
1740	GTEST_MESSAGE_AT_(file, line, "Failed", \
1741	::testing::TestPartResult::kNonFatalFailure)
1742
1743	// Generates a fatal failure with a generic message.
1744	#define GTEST_FAIL() GTEST_FATAL_FAILURE_("Failed")
1745
1746	// Like GTEST_FAIL(), but at the given source file location.
1747	#define GTEST_FAIL_AT(file, line) \
1748	return GTEST_MESSAGE_AT_(file, line, "Failed", \
1749	::testing::TestPartResult::kFatalFailure)
1750
1751	// Define this macro to 1 to omit the definition of FAIL(), which is a
1752	// generic name and clashes with some other libraries.
1753	#if !(defined(GTEST_DONT_DEFINE_FAIL) && GTEST_DONT_DEFINE_FAIL)
1754	#define FAIL() GTEST_FAIL()
1755	#endif
1756
1757	// Generates a success with a generic message.
1758	#define GTEST_SUCCEED() GTEST_SUCCESS_("Succeeded")
1759
1760	// Define this macro to 1 to omit the definition of SUCCEED(), which
1761	// is a generic name and clashes with some other libraries.
1762	#if !(defined(GTEST_DONT_DEFINE_SUCCEED) && GTEST_DONT_DEFINE_SUCCEED)
1763	#define SUCCEED() GTEST_SUCCEED()
1764	#endif
1765
1766	// Macros for testing exceptions.
1767	//
1768	// * {ASSERT|EXPECT}_THROW(statement, expected_exception):
1769	// Tests that the statement throws the expected exception.
1770	// * {ASSERT|EXPECT}_NO_THROW(statement):
1771	// Tests that the statement doesn't throw any exception.
1772	// * {ASSERT|EXPECT}_ANY_THROW(statement):
1773	// Tests that the statement throws an exception.
1774
1775	#define EXPECT_THROW(statement, expected_exception) \
1776	GTEST_TEST_THROW_(statement, expected_exception, GTEST_NONFATAL_FAILURE_)
1777	#define EXPECT_NO_THROW(statement) \
1778	GTEST_TEST_NO_THROW_(statement, GTEST_NONFATAL_FAILURE_)
1779	#define EXPECT_ANY_THROW(statement) \
1780	GTEST_TEST_ANY_THROW_(statement, GTEST_NONFATAL_FAILURE_)
1781	#define ASSERT_THROW(statement, expected_exception) \
1782	GTEST_TEST_THROW_(statement, expected_exception, GTEST_FATAL_FAILURE_)
1783	#define ASSERT_NO_THROW(statement) \
1784	GTEST_TEST_NO_THROW_(statement, GTEST_FATAL_FAILURE_)
1785	#define ASSERT_ANY_THROW(statement) \
1786	GTEST_TEST_ANY_THROW_(statement, GTEST_FATAL_FAILURE_)
1787
1788	// Boolean assertions. Condition can be either a Boolean expression or an
1789	// AssertionResult. For more information on how to use AssertionResult with
1790	// these macros see comments on that class.
1791	#define GTEST_EXPECT_TRUE(condition) \
1792	GTEST_TEST_BOOLEAN_(condition, #condition, false, true, \
1793	GTEST_NONFATAL_FAILURE_)
1794	#define GTEST_EXPECT_FALSE(condition) \
1795	GTEST_TEST_BOOLEAN_(!(condition), #condition, true, false, \
1796	GTEST_NONFATAL_FAILURE_)
1797	#define GTEST_ASSERT_TRUE(condition) \
1798	GTEST_TEST_BOOLEAN_(condition, #condition, false, true, GTEST_FATAL_FAILURE_)
1799	#define GTEST_ASSERT_FALSE(condition) \
1800	GTEST_TEST_BOOLEAN_(!(condition), #condition, true, false, \
1801	GTEST_FATAL_FAILURE_)
1802
1803	// Define these macros to 1 to omit the definition of the corresponding
1804	// EXPECT or ASSERT, which clashes with some users' own code.
1805
1806	#if !(defined(GTEST_DONT_DEFINE_EXPECT_TRUE) && GTEST_DONT_DEFINE_EXPECT_TRUE)
1807	#define EXPECT_TRUE(condition) GTEST_EXPECT_TRUE(condition)
1808	#endif
1809
1810	#if !(defined(GTEST_DONT_DEFINE_EXPECT_FALSE) && GTEST_DONT_DEFINE_EXPECT_FALSE)
1811	#define EXPECT_FALSE(condition) GTEST_EXPECT_FALSE(condition)
1812	#endif
1813
1814	#if !(defined(GTEST_DONT_DEFINE_ASSERT_TRUE) && GTEST_DONT_DEFINE_ASSERT_TRUE)
1815	#define ASSERT_TRUE(condition) GTEST_ASSERT_TRUE(condition)
1816	#endif
1817
1818	#if !(defined(GTEST_DONT_DEFINE_ASSERT_FALSE) && GTEST_DONT_DEFINE_ASSERT_FALSE)
1819	#define ASSERT_FALSE(condition) GTEST_ASSERT_FALSE(condition)
1820	#endif
1821
1822	// Macros for testing equalities and inequalities.
1823	//
1824	// * {ASSERT|EXPECT}_EQ(v1, v2): Tests that v1 == v2
1825	// * {ASSERT|EXPECT}_NE(v1, v2): Tests that v1 != v2
1826	// * {ASSERT|EXPECT}_LT(v1, v2): Tests that v1 < v2
1827	// * {ASSERT|EXPECT}_LE(v1, v2): Tests that v1 <= v2
1828	// * {ASSERT|EXPECT}_GT(v1, v2): Tests that v1 > v2
1829	// * {ASSERT|EXPECT}_GE(v1, v2): Tests that v1 >= v2
1830	//
1831	// When they are not, Google Test prints both the tested expressions and
1832	// their actual values. The values must be compatible built-in types,
1833	// or you will get a compiler error. By "compatible" we mean that the
1834	// values can be compared by the respective operator.
1835	//
1836	// Note:
1837	//
1838	// 1. It is possible to make a user-defined type work with
1839	// {ASSERT|EXPECT}_??(), but that requires overloading the
1840	// comparison operators and is thus discouraged by the Google C++
1841	// Usage Guide. Therefore, you are advised to use the
1842	// {ASSERT|EXPECT}_TRUE() macro to assert that two objects are
1843	// equal.
1844	//
1845	// 2. The {ASSERT|EXPECT}_??() macros do pointer comparisons on
1846	// pointers (in particular, C strings). Therefore, if you use it
1847	// with two C strings, you are testing how their locations in memory
1848	// are related, not how their content is related. To compare two C
1849	// strings by content, use {ASSERT|EXPECT}_STR*().
1850	//
1851	// 3. {ASSERT|EXPECT}_EQ(v1, v2) is preferred to
1852	// {ASSERT|EXPECT}_TRUE(v1 == v2), as the former tells you
1853	// what the actual value is when it fails, and similarly for the
1854	// other comparisons.
1855	//
1856	// 4. Do not depend on the order in which {ASSERT|EXPECT}_??()
1857	// evaluate their arguments, which is undefined.
1858	//
1859	// 5. These macros evaluate their arguments exactly once.
1860	//
1861	// Examples:
1862	//
1863	// EXPECT_NE(Foo(), 5);
1864	// EXPECT_EQ(a_pointer, NULL);
1865	// ASSERT_LT(i, array_size);
1866	// ASSERT_GT(records.size(), 0) << "There is no record left.";
1867
1868	#define EXPECT_EQ(val1, val2) \
1869	EXPECT_PRED_FORMAT2(::testing::internal::EqHelper::Compare, val1, val2)
1870	#define EXPECT_NE(val1, val2) \
1871	EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperNE, val1, val2)
1872	#define EXPECT_LE(val1, val2) \
1873	EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperLE, val1, val2)
1874	#define EXPECT_LT(val1, val2) \
1875	EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperLT, val1, val2)
1876	#define EXPECT_GE(val1, val2) \
1877	EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperGE, val1, val2)
1878	#define EXPECT_GT(val1, val2) \
1879	EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperGT, val1, val2)
1880
1881	#define GTEST_ASSERT_EQ(val1, val2) \
1882	ASSERT_PRED_FORMAT2(::testing::internal::EqHelper::Compare, val1, val2)
1883	#define GTEST_ASSERT_NE(val1, val2) \
1884	ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperNE, val1, val2)
1885	#define GTEST_ASSERT_LE(val1, val2) \
1886	ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperLE, val1, val2)
1887	#define GTEST_ASSERT_LT(val1, val2) \
1888	ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperLT, val1, val2)
1889	#define GTEST_ASSERT_GE(val1, val2) \
1890	ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperGE, val1, val2)
1891	#define GTEST_ASSERT_GT(val1, val2) \
1892	ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperGT, val1, val2)
1893
1894	// Define macro GTEST_DONT_DEFINE_ASSERT_XY to 1 to omit the definition of
1895	// ASSERT_XY(), which clashes with some users' own code.
1896
1897	#if !(defined(GTEST_DONT_DEFINE_ASSERT_EQ) && GTEST_DONT_DEFINE_ASSERT_EQ)
1898	#define ASSERT_EQ(val1, val2) GTEST_ASSERT_EQ(val1, val2)
1899	#endif
1900
1901	#if !(defined(GTEST_DONT_DEFINE_ASSERT_NE) && GTEST_DONT_DEFINE_ASSERT_NE)
1902	#define ASSERT_NE(val1, val2) GTEST_ASSERT_NE(val1, val2)
1903	#endif
1904
1905	#if !(defined(GTEST_DONT_DEFINE_ASSERT_LE) && GTEST_DONT_DEFINE_ASSERT_LE)
1906	#define ASSERT_LE(val1, val2) GTEST_ASSERT_LE(val1, val2)
1907	#endif
1908
1909	#if !(defined(GTEST_DONT_DEFINE_ASSERT_LT) && GTEST_DONT_DEFINE_ASSERT_LT)
1910	#define ASSERT_LT(val1, val2) GTEST_ASSERT_LT(val1, val2)
1911	#endif
1912
1913	#if !(defined(GTEST_DONT_DEFINE_ASSERT_GE) && GTEST_DONT_DEFINE_ASSERT_GE)
1914	#define ASSERT_GE(val1, val2) GTEST_ASSERT_GE(val1, val2)
1915	#endif
1916
1917	#if !(defined(GTEST_DONT_DEFINE_ASSERT_GT) && GTEST_DONT_DEFINE_ASSERT_GT)
1918	#define ASSERT_GT(val1, val2) GTEST_ASSERT_GT(val1, val2)
1919	#endif
1920
1921	// C-string Comparisons. All tests treat NULL and any non-NULL string
1922	// as different. Two NULLs are equal.
1923	//
1924	// * {ASSERT|EXPECT}_STREQ(s1, s2): Tests that s1 == s2
1925	// * {ASSERT|EXPECT}_STRNE(s1, s2): Tests that s1 != s2
1926	// * {ASSERT|EXPECT}_STRCASEEQ(s1, s2): Tests that s1 == s2, ignoring case
1927	// * {ASSERT|EXPECT}_STRCASENE(s1, s2): Tests that s1 != s2, ignoring case
1928	//
1929	// For wide or narrow string objects, you can use the
1930	// {ASSERT|EXPECT}_??() macros.
1931	//
1932	// Don't depend on the order in which the arguments are evaluated,
1933	// which is undefined.
1934	//
1935	// These macros evaluate their arguments exactly once.
1936
1937	#define EXPECT_STREQ(s1, s2) \
1938	EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperSTREQ, s1, s2)
1939	#define EXPECT_STRNE(s1, s2) \
1940	EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperSTRNE, s1, s2)
1941	#define EXPECT_STRCASEEQ(s1, s2) \
1942	EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperSTRCASEEQ, s1, s2)
1943	#define EXPECT_STRCASENE(s1, s2) \
1944	EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperSTRCASENE, s1, s2)
1945
1946	#define ASSERT_STREQ(s1, s2) \
1947	ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperSTREQ, s1, s2)
1948	#define ASSERT_STRNE(s1, s2) \
1949	ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperSTRNE, s1, s2)
1950	#define ASSERT_STRCASEEQ(s1, s2) \
1951	ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperSTRCASEEQ, s1, s2)
1952	#define ASSERT_STRCASENE(s1, s2) \
1953	ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperSTRCASENE, s1, s2)
1954
1955	// Macros for comparing floating-point numbers.
1956	//
1957	// * {ASSERT|EXPECT}_FLOAT_EQ(val1, val2):
1958	// Tests that two float values are almost equal.
1959	// * {ASSERT|EXPECT}_DOUBLE_EQ(val1, val2):
1960	// Tests that two double values are almost equal.
1961	// * {ASSERT|EXPECT}_NEAR(v1, v2, abs_error):
1962	// Tests that v1 and v2 are within the given distance to each other.
1963	//
1964	// Google Test uses ULP-based comparison to automatically pick a default
1965	// error bound that is appropriate for the operands. See the
1966	// FloatingPoint template class in gtest-internal.h if you are
1967	// interested in the implementation details.
1968
1969	#define EXPECT_FLOAT_EQ(val1, val2) \
1970	EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperFloatingPointEQ<float>, \
1971	val1, val2)
1972
1973	#define EXPECT_DOUBLE_EQ(val1, val2) \
1974	EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperFloatingPointEQ<double>, \
1975	val1, val2)
1976
1977	#define ASSERT_FLOAT_EQ(val1, val2) \
1978	ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperFloatingPointEQ<float>, \
1979	val1, val2)
1980
1981	#define ASSERT_DOUBLE_EQ(val1, val2) \
1982	ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperFloatingPointEQ<double>, \
1983	val1, val2)
1984
1985	#define EXPECT_NEAR(val1, val2, abs_error) \
1986	EXPECT_PRED_FORMAT3(::testing::internal::DoubleNearPredFormat, val1, val2, \
1987	abs_error)
1988
1989	#define ASSERT_NEAR(val1, val2, abs_error) \
1990	ASSERT_PRED_FORMAT3(::testing::internal::DoubleNearPredFormat, val1, val2, \
1991	abs_error)
1992
1993	// These predicate format functions work on floating-point values, and
1994	// can be used in {ASSERT|EXPECT}_PRED_FORMAT2*(), e.g.
1995	//
1996	// EXPECT_PRED_FORMAT2(testing::DoubleLE, Foo(), 5.0);
1997
1998	// Asserts that val1 is less than, or almost equal to, val2. Fails
1999	// otherwise. In particular, it fails if either val1 or val2 is NaN.
2000	GTEST_API_ AssertionResult FloatLE(const char* expr1, const char* expr2,
2001	float val1, float val2);
2002	GTEST_API_ AssertionResult DoubleLE(const char* expr1, const char* expr2,
2003	double val1, double val2);
2004
2005	#ifdef GTEST_OS_WINDOWS
2006
2007	// Macros that test for HRESULT failure and success, these are only useful
2008	// on Windows, and rely on Windows SDK macros and APIs to compile.
2009	//
2010	// * {ASSERT|EXPECT}_HRESULT_{SUCCEEDED|FAILED}(expr)
2011	//
2012	// When expr unexpectedly fails or succeeds, Google Test prints the
2013	// expected result and the actual result with both a human-readable
2014	// string representation of the error, if available, as well as the
2015	// hex result code.
2016	#define EXPECT_HRESULT_SUCCEEDED(expr) \
2017	EXPECT_PRED_FORMAT1(::testing::internal::IsHRESULTSuccess, (expr))
2018
2019	#define ASSERT_HRESULT_SUCCEEDED(expr) \
2020	ASSERT_PRED_FORMAT1(::testing::internal::IsHRESULTSuccess, (expr))
2021
2022	#define EXPECT_HRESULT_FAILED(expr) \
2023	EXPECT_PRED_FORMAT1(::testing::internal::IsHRESULTFailure, (expr))
2024
2025	#define ASSERT_HRESULT_FAILED(expr) \
2026	ASSERT_PRED_FORMAT1(::testing::internal::IsHRESULTFailure, (expr))
2027
2028	#endif // GTEST_OS_WINDOWS
2029
2030	// Macros that execute statement and check that it doesn't generate new fatal
2031	// failures in the current thread.
2032	//
2033	// * {ASSERT|EXPECT}_NO_FATAL_FAILURE(statement);
2034	//
2035	// Examples:
2036	//
2037	// EXPECT_NO_FATAL_FAILURE(Process());
2038	// ASSERT_NO_FATAL_FAILURE(Process()) << "Process() failed";
2039	//
2040	#define ASSERT_NO_FATAL_FAILURE(statement) \
2041	GTEST_TEST_NO_FATAL_FAILURE_(statement, GTEST_FATAL_FAILURE_)
2042	#define EXPECT_NO_FATAL_FAILURE(statement) \
2043	GTEST_TEST_NO_FATAL_FAILURE_(statement, GTEST_NONFATAL_FAILURE_)
2044
2045	// Causes a trace (including the given source file path and line number,
2046	// and the given message) to be included in every test failure message generated
2047	// by code in the scope of the lifetime of an instance of this class. The effect
2048	// is undone with the destruction of the instance.
2049	//
2050	// The message argument can be anything streamable to std::ostream.
2051	//
2052	// Example:
2053	// testing::ScopedTrace trace("file.cc", 123, "message");
2054	//
2055	class GTEST_API_ ScopedTrace {
2056	public:
2057	// The c'tor pushes the given source file location and message onto
2058	// a trace stack maintained by Google Test.
2059
2060	// Template version. Uses Message() to convert the values into strings.
2061	// Slow, but flexible.
2062	template <typename T>
2063	ScopedTrace(const char* file, int line, const T& message) {
2064	PushTrace(file, line, message: (Message() << message).GetString());
2065	}
2066
2067	// Optimize for some known types.
2068	ScopedTrace(const char* file, int line, const char* message) {
2069	PushTrace(file, line, message: message ? message : "(null)");
2070	}
2071
2072	ScopedTrace(const char* file, int line, const std::string& message) {
2073	PushTrace(file, line, message);
2074	}
2075
2076	// The d'tor pops the info pushed by the c'tor.
2077	//
2078	// Note that the d'tor is not virtual in order to be efficient.
2079	// Don't inherit from ScopedTrace!
2080	~ScopedTrace();
2081
2082	private:
2083	void PushTrace(const char* file, int line, std::string message);
2084
2085	ScopedTrace(const ScopedTrace&) = delete;
2086	ScopedTrace& operator=(const ScopedTrace&) = delete;
2087	};
2088
2089	// Causes a trace (including the source file path, the current line
2090	// number, and the given message) to be included in every test failure
2091	// message generated by code in the current scope. The effect is
2092	// undone when the control leaves the current scope.
2093	//
2094	// The message argument can be anything streamable to std::ostream.
2095	//
2096	// In the implementation, we include the current line number as part
2097	// of the dummy variable name, thus allowing multiple SCOPED_TRACE()s
2098	// to appear in the same block - as long as they are on different
2099	// lines.
2100	//
2101	// Assuming that each thread maintains its own stack of traces.
2102	// Therefore, a SCOPED_TRACE() would (correctly) only affect the
2103	// assertions in its own thread.
2104	#define SCOPED_TRACE(message) \
2105	const ::testing::ScopedTrace GTEST_CONCAT_TOKEN_(gtest_trace_, __LINE__)( \
2106	__FILE__, __LINE__, (message))
2107
2108	// Compile-time assertion for type equality.
2109	// StaticAssertTypeEq<type1, type2>() compiles if and only if type1 and type2
2110	// are the same type. The value it returns is not interesting.
2111	//
2112	// Instead of making StaticAssertTypeEq a class template, we make it a
2113	// function template that invokes a helper class template. This
2114	// prevents a user from misusing StaticAssertTypeEq<T1, T2> by
2115	// defining objects of that type.
2116	//
2117	// CAVEAT:
2118	//
2119	// When used inside a method of a class template,
2120	// StaticAssertTypeEq<T1, T2>() is effective ONLY IF the method is
2121	// instantiated. For example, given:
2122	//
2123	// template <typename T> class Foo {
2124	// public:
2125	// void Bar() { testing::StaticAssertTypeEq<int, T>(); }
2126	// };
2127	//
2128	// the code:
2129	//
2130	// void Test1() { Foo<bool> foo; }
2131	//
2132	// will NOT generate a compiler error, as Foo<bool>::Bar() is never
2133	// actually instantiated. Instead, you need:
2134	//
2135	// void Test2() { Foo<bool> foo; foo.Bar(); }
2136	//
2137	// to cause a compiler error.
2138	template <typename T1, typename T2>
2139	constexpr bool StaticAssertTypeEq() noexcept {
2140	static_assert(std::is_same<T1, T2>::value, "T1 and T2 are not the same type");
2141	return true;
2142	}
2143
2144	// Defines a test.
2145	//
2146	// The first parameter is the name of the test suite, and the second
2147	// parameter is the name of the test within the test suite.
2148	//
2149	// The convention is to end the test suite name with "Test". For
2150	// example, a test suite for the Foo class can be named FooTest.
2151	//
2152	// Test code should appear between braces after an invocation of
2153	// this macro. Example:
2154	//
2155	// TEST(FooTest, InitializesCorrectly) {
2156	// Foo foo;
2157	// EXPECT_TRUE(foo.StatusIsOK());
2158	// }
2159
2160	// Note that we call GetTestTypeId() instead of GetTypeId<
2161	// ::testing::Test>() here to get the type ID of testing::Test. This
2162	// is to work around a suspected linker bug when using Google Test as
2163	// a framework on Mac OS X. The bug causes GetTypeId<
2164	// ::testing::Test>() to return different values depending on whether
2165	// the call is from the Google Test framework itself or from user test
2166	// code. GetTestTypeId() is guaranteed to always return the same
2167	// value, as it always calls GetTypeId<>() from the Google Test
2168	// framework.
2169	#define GTEST_TEST(test_suite_name, test_name) \
2170	GTEST_TEST_(test_suite_name, test_name, ::testing::Test, \
2171	::testing::internal::GetTestTypeId())
2172
2173	// Define this macro to 1 to omit the definition of TEST(), which
2174	// is a generic name and clashes with some other libraries.
2175	#if !(defined(GTEST_DONT_DEFINE_TEST) && GTEST_DONT_DEFINE_TEST)
2176	#define TEST(test_suite_name, test_name) GTEST_TEST(test_suite_name, test_name)
2177	#endif
2178
2179	// Defines a test that uses a test fixture.
2180	//
2181	// The first parameter is the name of the test fixture class, which
2182	// also doubles as the test suite name. The second parameter is the
2183	// name of the test within the test suite.
2184	//
2185	// A test fixture class must be declared earlier. The user should put
2186	// the test code between braces after using this macro. Example:
2187	//
2188	// class FooTest : public testing::Test {
2189	// protected:
2190	// void SetUp() override { b_.AddElement(3); }
2191	//
2192	// Foo a_;
2193	// Foo b_;
2194	// };
2195	//
2196	// TEST_F(FooTest, InitializesCorrectly) {
2197	// EXPECT_TRUE(a_.StatusIsOK());
2198	// }
2199	//
2200	// TEST_F(FooTest, ReturnsElementCountCorrectly) {
2201	// EXPECT_EQ(a_.size(), 0);
2202	// EXPECT_EQ(b_.size(), 1);
2203	// }
2204	#define GTEST_TEST_F(test_fixture, test_name) \
2205	GTEST_TEST_(test_fixture, test_name, test_fixture, \
2206	::testing::internal::GetTypeId<test_fixture>())
2207	#if !(defined(GTEST_DONT_DEFINE_TEST_F) && GTEST_DONT_DEFINE_TEST_F)
2208	#define TEST_F(test_fixture, test_name) GTEST_TEST_F(test_fixture, test_name)
2209	#endif
2210
2211	// Returns a path to a temporary directory, which should be writable. It is
2212	// implementation-dependent whether or not the path is terminated by the
2213	// directory-separator character.
2214	GTEST_API_ std::string TempDir();
2215
2216	// Returns a path to a directory that contains ancillary data files that might
2217	// be used by tests. It is implementation dependent whether or not the path is
2218	// terminated by the directory-separator character. The directory and the files
2219	// in it should be considered read-only.
2220	GTEST_API_ std::string SrcDir();
2221
2222	GTEST_DISABLE_MSC_WARNINGS_POP_() // 4805 4100
2223
2224	// Dynamically registers a test with the framework.
2225	//
2226	// This is an advanced API only to be used when the `TEST` macros are
2227	// insufficient. The macros should be preferred when possible, as they avoid
2228	// most of the complexity of calling this function.
2229	//
2230	// The `factory` argument is a factory callable (move-constructible) object or
2231	// function pointer that creates a new instance of the Test object. It
2232	// handles ownership to the caller. The signature of the callable is
2233	// `Fixture*()`, where `Fixture` is the test fixture class for the test. All
2234	// tests registered with the same `test_suite_name` must return the same
2235	// fixture type. This is checked at runtime.
2236	//
2237	// The framework will infer the fixture class from the factory and will call
2238	// the `SetUpTestSuite` and `TearDownTestSuite` for it.
2239	//
2240	// Must be called before `RUN_ALL_TESTS()` is invoked, otherwise behavior is
2241	// undefined.
2242	//
2243	// Use case example:
2244	//
2245	// class MyFixture : public ::testing::Test {
2246	// public:
2247	// // All of these optional, just like in regular macro usage.
2248	// static void SetUpTestSuite() { ... }
2249	// static void TearDownTestSuite() { ... }
2250	// void SetUp() override { ... }
2251	// void TearDown() override { ... }
2252	// };
2253	//
2254	// class MyTest : public MyFixture {
2255	// public:
2256	// explicit MyTest(int data) : data_(data) {}
2257	// void TestBody() override { ... }
2258	//
2259	// private:
2260	// int data_;
2261	// };
2262	//
2263	// void RegisterMyTests(const std::vector<int>& values) {
2264	// for (int v : values) {
2265	// ::testing::RegisterTest(
2266	// "MyFixture", ("Test" + std::to_string(v)).c_str(), nullptr,
2267	// std::to_string(v).c_str(),
2268	// __FILE__, __LINE__,
2269	// // Important to use the fixture type as the return type here.
2270	// [=]() -> MyFixture* { return new MyTest(v); });
2271	// }
2272	// }
2273	// ...
2274	// int main(int argc, char** argv) {
2275	// ::testing::InitGoogleTest(&argc, argv);
2276	// std::vector<int> values_to_test = LoadValuesFromConfig();
2277	// RegisterMyTests(values_to_test);
2278	// ...
2279	// return RUN_ALL_TESTS();
2280	// }
2281	//
2282	template <int&... ExplicitParameterBarrier, typename Factory>
2283	TestInfo* RegisterTest(const char* test_suite_name, const char* test_name,
2284	const char* type_param, const char* value_param,
2285	const char* file, int line, Factory factory) {
2286	using TestT = typename std::remove_pointer<decltype(factory())>::type;
2287
2288	class FactoryImpl : public internal::TestFactoryBase {
2289	public:
2290	explicit FactoryImpl(Factory f) : factory_(std::move(f)) {}
2291	Test* CreateTest() override { return factory_(); }
2292
2293	private:
2294	Factory factory_;
2295	};
2296
2297	return internal::MakeAndRegisterTestInfo(
2298	test_suite_name, name: test_name, type_param, value_param,
2299	code_location: internal::CodeLocation(file, line), fixture_class_id: internal::GetTypeId<TestT>(),
2300	set_up_tc: internal::SuiteApiResolver<TestT>::GetSetUpCaseOrSuite(file, line),
2301	tear_down_tc: internal::SuiteApiResolver<TestT>::GetTearDownCaseOrSuite(file, line),
2302	factory: new FactoryImpl{std::move(factory)});
2303	}
2304
2305	} // namespace testing
2306
2307	// Use this function in main() to run all tests. It returns 0 if all
2308	// tests are successful, or 1 otherwise.
2309	//
2310	// RUN_ALL_TESTS() should be invoked after the command line has been
2311	// parsed by InitGoogleTest().
2312	//
2313	// This function was formerly a macro; thus, it is in the global
2314	// namespace and has an all-caps name.
2315	int RUN_ALL_TESTS() GTEST_MUST_USE_RESULT_;
2316
2317	inline int RUN_ALL_TESTS() { return ::testing::UnitTest::GetInstance()->Run(); }
2318
2319	GTEST_DISABLE_MSC_WARNINGS_POP_() // 4251
2320
2321	#endif // GOOGLETEST_INCLUDE_GTEST_GTEST_H_
2322