1// Copyright 2005, Google Inc.
2// All rights reserved.
3//
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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 <limits>
55#include <memory>
56#include <ostream>
57#include <set>
58#include <sstream>
59#include <string>
60#include <type_traits>
61#include <vector>
62
63#include "gtest/gtest-assertion-result.h" // IWYU pragma: export
64#include "gtest/gtest-death-test.h" // IWYU pragma: export
65#include "gtest/gtest-matchers.h" // IWYU pragma: export
66#include "gtest/gtest-message.h" // IWYU pragma: export
67#include "gtest/gtest-param-test.h" // IWYU pragma: export
68#include "gtest/gtest-printers.h" // IWYU pragma: export
69#include "gtest/gtest-test-part.h" // IWYU pragma: export
70#include "gtest/gtest-typed-test.h" // IWYU pragma: export
71#include "gtest/gtest_pred_impl.h" // IWYU pragma: export
72#include "gtest/gtest_prod.h" // IWYU pragma: export
73#include "gtest/internal/gtest-internal.h"
74#include "gtest/internal/gtest-string.h"
75
76GTEST_DISABLE_MSC_WARNINGS_PUSH_(4251 \
77/* class A needs to have dll-interface to be used by clients of class B */)
78
79// Declares the flags.
80
81// This flag temporary enables the disabled tests.
82GTEST_DECLARE_bool_(also_run_disabled_tests);
83
84// This flag brings the debugger on an assertion failure.
85GTEST_DECLARE_bool_(break_on_failure);
86
87// This flag controls whether Google Test catches all test-thrown exceptions
88// and logs them as failures.
89GTEST_DECLARE_bool_(catch_exceptions);
90
91// This flag enables using colors in terminal output. Available values are
92// "yes" to enable colors, "no" (disable colors), or "auto" (the default)
93// to let Google Test decide.
94GTEST_DECLARE_string_(color);
95
96// This flag controls whether the test runner should continue execution past
97// first failure.
98GTEST_DECLARE_bool_(fail_fast);
99
100// This flag sets up the filter to select by name using a glob pattern
101// the tests to run. If the filter is not given all tests are executed.
102GTEST_DECLARE_string_(filter);
103
104// This flag controls whether Google Test installs a signal handler that dumps
105// debugging information when fatal signals are raised.
106GTEST_DECLARE_bool_(install_failure_signal_handler);
107
108// This flag causes the Google Test to list tests. None of the tests listed
109// are actually run if the flag is provided.
110GTEST_DECLARE_bool_(list_tests);
111
112// This flag controls whether Google Test emits a detailed XML report to a file
113// in addition to its normal textual output.
114GTEST_DECLARE_string_(output);
115
116// This flags control whether Google Test prints only test failures.
117GTEST_DECLARE_bool_(brief);
118
119// This flags control whether Google Test prints the elapsed time for each
120// test.
121GTEST_DECLARE_bool_(print_time);
122
123// This flags control whether Google Test prints UTF8 characters as text.
124GTEST_DECLARE_bool_(print_utf8);
125
126// This flag specifies the random number seed.
127GTEST_DECLARE_int32_(random_seed);
128
129// This flag sets how many times the tests are repeated. The default value
130// is 1. If the value is -1 the tests are repeating forever.
131GTEST_DECLARE_int32_(repeat);
132
133// This flag controls whether Google Test Environments are recreated for each
134// repeat of the tests. The default value is true. If set to false the global
135// test Environment objects are only set up once, for the first iteration, and
136// only torn down once, for the last.
137GTEST_DECLARE_bool_(recreate_environments_when_repeating);
138
139// This flag controls whether Google Test includes Google Test internal
140// stack frames in failure stack traces.
141GTEST_DECLARE_bool_(show_internal_stack_frames);
142
143// When this flag is specified, tests' order is randomized on every iteration.
144GTEST_DECLARE_bool_(shuffle);
145
146// This flag specifies the maximum number of stack frames to be
147// printed in a failure message.
148GTEST_DECLARE_int32_(stack_trace_depth);
149
150// When this flag is specified, a failed assertion will throw an
151// exception if exceptions are enabled, or exit the program with a
152// non-zero code otherwise. For use with an external test framework.
153GTEST_DECLARE_bool_(throw_on_failure);
154
155// When this flag is set with a "host:port" string, on supported
156// platforms test results are streamed to the specified port on
157// the specified host machine.
158GTEST_DECLARE_string_(stream_result_to);
159
160#if GTEST_USE_OWN_FLAGFILE_FLAG_
161GTEST_DECLARE_string_(flagfile);
162#endif // GTEST_USE_OWN_FLAGFILE_FLAG_
163
164namespace testing {
165
166// Silence C4100 (unreferenced formal parameter) and 4805
167// unsafe mix of type 'const int' and type 'const bool'
168GTEST_DISABLE_MSC_WARNINGS_PUSH_(4805 4100)
169
170// The upper limit for valid stack trace depths.
171const int kMaxStackTraceDepth = 100;
172
173namespace internal {
174
175class AssertHelper;
176class DefaultGlobalTestPartResultReporter;
177class ExecDeathTest;
178class NoExecDeathTest;
179class FinalSuccessChecker;
180class GTestFlagSaver;
181class StreamingListenerTest;
182class TestResultAccessor;
183class TestEventListenersAccessor;
184class TestEventRepeater;
185class UnitTestRecordPropertyTestHelper;
186class WindowsDeathTest;
187class FuchsiaDeathTest;
188class UnitTestImpl* GetUnitTestImpl();
189void ReportFailureInUnknownLocation(TestPartResult::Type result_type,
190 const std::string& message);
191std::set<std::string>* GetIgnoredParameterizedTestSuites();
192
193// A base class that prevents subclasses from being copyable.
194// We do this instead of using '= delete' so as to avoid triggering warnings
195// inside user code regarding any of our declarations.
196class GTestNonCopyable {
197 public:
198 GTestNonCopyable() = default;
199 GTestNonCopyable(const GTestNonCopyable&) = delete;
200 GTestNonCopyable& operator=(const GTestNonCopyable&) = delete;
201 ~GTestNonCopyable() = default;
202};
203
204} // namespace internal
205
206// The friend relationship of some of these classes is cyclic.
207// If we don't forward declare them the compiler might confuse the classes
208// in friendship clauses with same named classes on the scope.
209class Test;
210class TestSuite;
211
212// Old API is still available but deprecated
213#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
214using TestCase = TestSuite;
215#endif
216class TestInfo;
217class UnitTest;
218
219// The abstract class that all tests inherit from.
220//
221// In Google Test, a unit test program contains one or many TestSuites, and
222// each TestSuite contains one or many Tests.
223//
224// When you define a test using the TEST macro, you don't need to
225// explicitly derive from Test - the TEST macro automatically does
226// this for you.
227//
228// The only time you derive from Test is when defining a test fixture
229// to be used in a TEST_F. For example:
230//
231// class FooTest : public testing::Test {
232// protected:
233// void SetUp() override { ... }
234// void TearDown() override { ... }
235// ...
236// };
237//
238// TEST_F(FooTest, Bar) { ... }
239// TEST_F(FooTest, Baz) { ... }
240//
241// Test is not copyable.
242class GTEST_API_ Test {
243 public:
244 friend class TestInfo;
245
246 // The d'tor is virtual as we intend to inherit from Test.
247 virtual ~Test();
248
249 // Sets up the stuff shared by all tests in this test suite.
250 //
251 // Google Test will call Foo::SetUpTestSuite() before running the first
252 // test in test suite Foo. Hence a sub-class can define its own
253 // SetUpTestSuite() method to shadow the one defined in the super
254 // class.
255 static void SetUpTestSuite() {}
256
257 // Tears down the stuff shared by all tests in this test suite.
258 //
259 // Google Test will call Foo::TearDownTestSuite() after running the last
260 // test in test suite Foo. Hence a sub-class can define its own
261 // TearDownTestSuite() method to shadow the one defined in the super
262 // class.
263 static void TearDownTestSuite() {}
264
265 // Legacy API is deprecated but still available. Use SetUpTestSuite and
266 // TearDownTestSuite instead.
267#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
268 static void TearDownTestCase() {}
269 static void SetUpTestCase() {}
270#endif // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
271
272 // Returns true if and only if the current test has a fatal failure.
273 static bool HasFatalFailure();
274
275 // Returns true if and only if the current test has a non-fatal failure.
276 static bool HasNonfatalFailure();
277
278 // Returns true if and only if the current test was skipped.
279 static bool IsSkipped();
280
281 // Returns true if and only if the current test has a (either fatal or
282 // non-fatal) failure.
283 static bool HasFailure() { return HasFatalFailure() || HasNonfatalFailure(); }
284
285 // Logs a property for the current test, test suite, or for the entire
286 // invocation of the test program when used outside of the context of a
287 // test suite. Only the last value for a given key is remembered. These
288 // are public static so they can be called from utility functions that are
289 // not members of the test fixture. Calls to RecordProperty made during
290 // lifespan of the test (from the moment its constructor starts to the
291 // moment its destructor finishes) will be output in XML as attributes of
292 // the <testcase> element. Properties recorded from fixture's
293 // SetUpTestSuite or TearDownTestSuite are logged as attributes of the
294 // corresponding <testsuite> element. Calls to RecordProperty made in the
295 // global context (before or after invocation of RUN_ALL_TESTS and from
296 // SetUp/TearDown method of Environment objects registered with Google
297 // Test) will be output as attributes of the <testsuites> element.
298 static void RecordProperty(const std::string& key, const std::string& value);
299 // We do not define a custom serialization except for values that can be
300 // converted to int64_t, but other values could be logged in this way.
301 template <typename T, std::enable_if_t<std::is_convertible<T, int64_t>::value,
302 bool> = true>
303 static void RecordProperty(const std::string& key, const T& value) {
304 RecordProperty(key, (Message() << value).GetString());
305 }
306
307 protected:
308 // Creates a Test object.
309 Test();
310
311 // Sets up the test fixture.
312 virtual void SetUp();
313
314 // Tears down the test fixture.
315 virtual void TearDown();
316
317 private:
318 // Returns true if and only if the current test has the same fixture class
319 // as the first test in the current test suite.
320 static bool HasSameFixtureClass();
321
322 // Runs the test after the test fixture has been set up.
323 //
324 // A sub-class must implement this to define the test logic.
325 //
326 // DO NOT OVERRIDE THIS FUNCTION DIRECTLY IN A USER PROGRAM.
327 // Instead, use the TEST or TEST_F macro.
328 virtual void TestBody() = 0;
329
330 // Sets up, executes, and tears down the test.
331 void Run();
332
333 // Deletes self. We deliberately pick an unusual name for this
334 // internal method to avoid clashing with names used in user TESTs.
335 void DeleteSelf_() { delete this; }
336
337 const std::unique_ptr<GTEST_FLAG_SAVER_> gtest_flag_saver_;
338
339 // Often a user misspells SetUp() as Setup() and spends a long time
340 // wondering why it is never called by Google Test. The declaration of
341 // the following method is solely for catching such an error at
342 // compile time:
343 //
344 // - The return type is deliberately chosen to be not void, so it
345 // will be a conflict if void Setup() is declared in the user's
346 // test fixture.
347 //
348 // - This method is private, so it will be another compiler error
349 // if the method is called from the user's test fixture.
350 //
351 // DO NOT OVERRIDE THIS FUNCTION.
352 //
353 // If you see an error about overriding the following function or
354 // about it being private, you have mis-spelled SetUp() as Setup().
355 struct Setup_should_be_spelled_SetUp {};
356 virtual Setup_should_be_spelled_SetUp* Setup() { return nullptr; }
357
358 // We disallow copying Tests.
359 Test(const Test&) = delete;
360 Test& operator=(const Test&) = delete;
361};
362
363typedef internal::TimeInMillis TimeInMillis;
364
365// A copyable object representing a user specified test property which can be
366// output as a key/value string pair.
367//
368// Don't inherit from TestProperty as its destructor is not virtual.
369class TestProperty {
370 public:
371 // C'tor. TestProperty does NOT have a default constructor.
372 // Always use this constructor (with parameters) to create a
373 // TestProperty object.
374 TestProperty(const std::string& a_key, const std::string& a_value)
375 : key_(a_key), value_(a_value) {}
376
377 // Gets the user supplied key.
378 const char* key() const { return key_.c_str(); }
379
380 // Gets the user supplied value.
381 const char* value() const { return value_.c_str(); }
382
383 // Sets a new value, overriding the one supplied in the constructor.
384 void SetValue(const std::string& new_value) { value_ = new_value; }
385
386 private:
387 // The key supplied by the user.
388 std::string key_;
389 // The value supplied by the user.
390 std::string value_;
391};
392
393// The result of a single Test. This includes a list of
394// TestPartResults, a list of TestProperties, a count of how many
395// death tests there are in the Test, and how much time it took to run
396// the Test.
397//
398// TestResult is not copyable.
399class GTEST_API_ TestResult {
400 public:
401 // Creates an empty TestResult.
402 TestResult();
403
404 // D'tor. Do not inherit from TestResult.
405 ~TestResult();
406
407 // Gets the number of all test parts. This is the sum of the number
408 // of successful test parts and the number of failed test parts.
409 int total_part_count() const;
410
411 // Returns the number of the test properties.
412 int test_property_count() const;
413
414 // Returns true if and only if the test passed (i.e. no test part failed).
415 bool Passed() const { return !Skipped() && !Failed(); }
416
417 // Returns true if and only if the test was skipped.
418 bool Skipped() const;
419
420 // Returns true if and only if the test failed.
421 bool Failed() const;
422
423 // Returns true if and only if the test fatally failed.
424 bool HasFatalFailure() const;
425
426 // Returns true if and only if the test has a non-fatal failure.
427 bool HasNonfatalFailure() const;
428
429 // Returns the elapsed time, in milliseconds.
430 TimeInMillis elapsed_time() const { return elapsed_time_; }
431
432 // Gets the time of the test case start, in ms from the start of the
433 // UNIX epoch.
434 TimeInMillis start_timestamp() const { return start_timestamp_; }
435
436 // Returns the i-th test part result among all the results. i can range from 0
437 // to total_part_count() - 1. If i is not in that range, aborts the program.
438 const TestPartResult& GetTestPartResult(int i) const;
439
440 // Returns the i-th test property. i can range from 0 to
441 // test_property_count() - 1. If i is not in that range, aborts the
442 // program.
443 const TestProperty& GetTestProperty(int i) const;
444
445 private:
446 friend class TestInfo;
447 friend class TestSuite;
448 friend class UnitTest;
449 friend class internal::DefaultGlobalTestPartResultReporter;
450 friend class internal::ExecDeathTest;
451 friend class internal::TestResultAccessor;
452 friend class internal::UnitTestImpl;
453 friend class internal::WindowsDeathTest;
454 friend class internal::FuchsiaDeathTest;
455
456 // Gets the vector of TestPartResults.
457 const std::vector<TestPartResult>& test_part_results() const {
458 return test_part_results_;
459 }
460
461 // Gets the vector of TestProperties.
462 const std::vector<TestProperty>& test_properties() const {
463 return test_properties_;
464 }
465
466 // Sets the start time.
467 void set_start_timestamp(TimeInMillis start) { start_timestamp_ = start; }
468
469 // Sets the elapsed time.
470 void set_elapsed_time(TimeInMillis elapsed) { elapsed_time_ = elapsed; }
471
472 // Adds a test property to the list. The property is validated and may add
473 // a non-fatal failure if invalid (e.g., if it conflicts with reserved
474 // key names). If a property is already recorded for the same key, the
475 // value will be updated, rather than storing multiple values for the same
476 // key. xml_element specifies the element for which the property is being
477 // recorded and is used for validation.
478 void RecordProperty(const std::string& xml_element,
479 const TestProperty& test_property);
480
481 // Adds a failure if the key is a reserved attribute of Google Test
482 // testsuite tags. Returns true if the property is valid.
483 // FIXME: Validate attribute names are legal and human readable.
484 static bool ValidateTestProperty(const std::string& xml_element,
485 const TestProperty& test_property);
486
487 // Adds a test part result to the list.
488 void AddTestPartResult(const TestPartResult& test_part_result);
489
490 // Returns the death test count.
491 int death_test_count() const { return death_test_count_; }
492
493 // Increments the death test count, returning the new count.
494 int increment_death_test_count() { return ++death_test_count_; }
495
496 // Clears the test part results.
497 void ClearTestPartResults();
498
499 // Clears the object.
500 void Clear();
501
502 // Protects mutable state of the property vector and of owned
503 // properties, whose values may be updated.
504 internal::Mutex test_properties_mutex_;
505
506 // The vector of TestPartResults
507 std::vector<TestPartResult> test_part_results_;
508 // The vector of TestProperties
509 std::vector<TestProperty> test_properties_;
510 // Running count of death tests.
511 int death_test_count_;
512 // The start time, in milliseconds since UNIX Epoch.
513 TimeInMillis start_timestamp_;
514 // The elapsed time, in milliseconds.
515 TimeInMillis elapsed_time_;
516
517 // We disallow copying TestResult.
518 TestResult(const TestResult&) = delete;
519 TestResult& operator=(const TestResult&) = delete;
520}; // class TestResult
521
522// A TestInfo object stores the following information about a test:
523//
524// Test suite name
525// Test name
526// Whether the test should be run
527// A function pointer that creates the test object when invoked
528// Test result
529//
530// The constructor of TestInfo registers itself with the UnitTest
531// singleton such that the RUN_ALL_TESTS() macro knows which tests to
532// run.
533class GTEST_API_ TestInfo {
534 public:
535 // Destructs a TestInfo object. This function is not virtual, so
536 // don't inherit from TestInfo.
537 ~TestInfo();
538
539 // Returns the test suite name.
540 const char* test_suite_name() const { return test_suite_name_.c_str(); }
541
542// Legacy API is deprecated but still available
543#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
544 const char* test_case_name() const { return test_suite_name(); }
545#endif // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
546
547 // Returns the test name.
548 const char* name() const { return name_.c_str(); }
549
550 // Returns the name of the parameter type, or NULL if this is not a typed
551 // or a type-parameterized test.
552 const char* type_param() const {
553 if (type_param_ != nullptr) return type_param_->c_str();
554 return nullptr;
555 }
556
557 // Returns the text representation of the value parameter, or NULL if this
558 // is not a value-parameterized test.
559 const char* value_param() const {
560 if (value_param_ != nullptr) return value_param_->c_str();
561 return nullptr;
562 }
563
564 // Returns the file name where this test is defined.
565 const char* file() const { return location_.file.c_str(); }
566
567 // Returns the line where this test is defined.
568 int line() const { return location_.line; }
569
570 // Return true if this test should not be run because it's in another shard.
571 bool is_in_another_shard() const { return is_in_another_shard_; }
572
573 // Returns true if this test should run, that is if the test is not
574 // disabled (or it is disabled but the also_run_disabled_tests flag has
575 // been specified) and its full name matches the user-specified filter.
576 //
577 // Google Test allows the user to filter the tests by their full names.
578 // The full name of a test Bar in test suite Foo is defined as
579 // "Foo.Bar". Only the tests that match the filter will run.
580 //
581 // A filter is a colon-separated list of glob (not regex) patterns,
582 // optionally followed by a '-' and a colon-separated list of
583 // negative patterns (tests to exclude). A test is run if it
584 // matches one of the positive patterns and does not match any of
585 // the negative patterns.
586 //
587 // For example, *A*:Foo.* is a filter that matches any string that
588 // contains the character 'A' or starts with "Foo.".
589 bool should_run() const { return should_run_; }
590
591 // Returns true if and only if this test will appear in the XML report.
592 bool is_reportable() const {
593 // The XML report includes tests matching the filter, excluding those
594 // run in other shards.
595 return matches_filter_ && !is_in_another_shard_;
596 }
597
598 // Returns the result of the test.
599 const TestResult* result() const { return &result_; }
600
601 private:
602#ifdef GTEST_HAS_DEATH_TEST
603 friend class internal::DefaultDeathTestFactory;
604#endif // GTEST_HAS_DEATH_TEST
605 friend class Test;
606 friend class TestSuite;
607 friend class internal::UnitTestImpl;
608 friend class internal::StreamingListenerTest;
609 friend TestInfo* internal::MakeAndRegisterTestInfo(
610 std::string test_suite_name, const char* name, const char* type_param,
611 const char* value_param, internal::CodeLocation code_location,
612 internal::TypeId fixture_class_id, internal::SetUpTestSuiteFunc set_up_tc,
613 internal::TearDownTestSuiteFunc tear_down_tc,
614 internal::TestFactoryBase* factory);
615
616 // Constructs a TestInfo object. The newly constructed instance assumes
617 // ownership of the factory object.
618 TestInfo(std::string test_suite_name, std::string name,
619 const char* a_type_param, // NULL if not a type-parameterized test
620 const char* a_value_param, // NULL if not a value-parameterized test
621 internal::CodeLocation a_code_location,
622 internal::TypeId fixture_class_id,
623 internal::TestFactoryBase* factory);
624
625 // Increments the number of death tests encountered in this test so
626 // far.
627 int increment_death_test_count() {
628 return result_.increment_death_test_count();
629 }
630
631 // Creates the test object, runs it, records its result, and then
632 // deletes it.
633 void Run();
634
635 // Skip and records the test result for this object.
636 void Skip();
637
638 static void ClearTestResult(TestInfo* test_info) {
639 test_info->result_.Clear();
640 }
641
642 // These fields are immutable properties of the test.
643 const std::string test_suite_name_; // test suite name
644 const std::string name_; // Test name
645 // Name of the parameter type, or NULL if this is not a typed or a
646 // type-parameterized test.
647 const std::unique_ptr<const ::std::string> type_param_;
648 // Text representation of the value parameter, or NULL if this is not a
649 // value-parameterized test.
650 const std::unique_ptr<const ::std::string> value_param_;
651 internal::CodeLocation location_;
652 const internal::TypeId fixture_class_id_; // ID of the test fixture class
653 bool should_run_; // True if and only if this test should run
654 bool is_disabled_; // True if and only if this test is disabled
655 bool matches_filter_; // True if this test matches the
656 // user-specified filter.
657 bool is_in_another_shard_; // Will be run in another shard.
658 internal::TestFactoryBase* const factory_; // The factory that creates
659 // the test object
660
661 // This field is mutable and needs to be reset before running the
662 // test for the second time.
663 TestResult result_;
664
665 TestInfo(const TestInfo&) = delete;
666 TestInfo& operator=(const TestInfo&) = delete;
667};
668
669// A test suite, which consists of a vector of TestInfos.
670//
671// TestSuite is not copyable.
672class GTEST_API_ TestSuite {
673 public:
674 // Creates a TestSuite with the given name.
675 //
676 // TestSuite does NOT have a default constructor. Always use this
677 // constructor to create a TestSuite object.
678 //
679 // Arguments:
680 //
681 // name: name of the test suite
682 // a_type_param: the name of the test's type parameter, or NULL if
683 // this is not a type-parameterized test.
684 // set_up_tc: pointer to the function that sets up the test suite
685 // tear_down_tc: pointer to the function that tears down the test suite
686 TestSuite(const std::string& name, const char* a_type_param,
687 internal::SetUpTestSuiteFunc set_up_tc,
688 internal::TearDownTestSuiteFunc tear_down_tc);
689
690 // Destructor of TestSuite.
691 virtual ~TestSuite();
692
693 // Gets the name of the TestSuite.
694 const char* name() const { return name_.c_str(); }
695
696 // Returns the name of the parameter type, or NULL if this is not a
697 // type-parameterized test suite.
698 const char* type_param() const {
699 if (type_param_ != nullptr) return type_param_->c_str();
700 return nullptr;
701 }
702
703 // Returns true if any test in this test suite should run.
704 bool should_run() const { return should_run_; }
705
706 // Gets the number of successful tests in this test suite.
707 int successful_test_count() const;
708
709 // Gets the number of skipped tests in this test suite.
710 int skipped_test_count() const;
711
712 // Gets the number of failed tests in this test suite.
713 int failed_test_count() const;
714
715 // Gets the number of disabled tests that will be reported in the XML report.
716 int reportable_disabled_test_count() const;
717
718 // Gets the number of disabled tests in this test suite.
719 int disabled_test_count() const;
720
721 // Gets the number of tests to be printed in the XML report.
722 int reportable_test_count() const;
723
724 // Get the number of tests in this test suite that should run.
725 int test_to_run_count() const;
726
727 // Gets the number of all tests in this test suite.
728 int total_test_count() const;
729
730 // Returns true if and only if the test suite passed.
731 bool Passed() const { return !Failed(); }
732
733 // Returns true if and only if the test suite failed.
734 bool Failed() const {
735 return failed_test_count() > 0 || ad_hoc_test_result().Failed();
736 }
737
738 // Returns the elapsed time, in milliseconds.
739 TimeInMillis elapsed_time() const { return elapsed_time_; }
740
741 // Gets the time of the test suite start, in ms from the start of the
742 // UNIX epoch.
743 TimeInMillis start_timestamp() const { return start_timestamp_; }
744
745 // Returns the i-th test among all the tests. i can range from 0 to
746 // total_test_count() - 1. If i is not in that range, returns NULL.
747 const TestInfo* GetTestInfo(int i) const;
748
749 // Returns the TestResult that holds test properties recorded during
750 // execution of SetUpTestSuite and TearDownTestSuite.
751 const TestResult& ad_hoc_test_result() const { return ad_hoc_test_result_; }
752
753 private:
754 friend class Test;
755 friend class internal::UnitTestImpl;
756
757 // Gets the (mutable) vector of TestInfos in this TestSuite.
758 std::vector<TestInfo*>& test_info_list() { return test_info_list_; }
759
760 // Gets the (immutable) vector of TestInfos in this TestSuite.
761 const std::vector<TestInfo*>& test_info_list() const {
762 return test_info_list_;
763 }
764
765 // Returns the i-th test among all the tests. i can range from 0 to
766 // total_test_count() - 1. If i is not in that range, returns NULL.
767 TestInfo* GetMutableTestInfo(int i);
768
769 // Sets the should_run member.
770 void set_should_run(bool should) { should_run_ = should; }
771
772 // Adds a TestInfo to this test suite. Will delete the TestInfo upon
773 // destruction of the TestSuite object.
774 void AddTestInfo(TestInfo* test_info);
775
776 // Clears the results of all tests in this test suite.
777 void ClearResult();
778
779 // Clears the results of all tests in the given test suite.
780 static void ClearTestSuiteResult(TestSuite* test_suite) {
781 test_suite->ClearResult();
782 }
783
784 // Runs every test in this TestSuite.
785 void Run();
786
787 // Skips the execution of tests under this TestSuite
788 void Skip();
789
790 // Runs SetUpTestSuite() for this TestSuite. This wrapper is needed
791 // for catching exceptions thrown from SetUpTestSuite().
792 void RunSetUpTestSuite() {
793 if (set_up_tc_ != nullptr) {
794 (*set_up_tc_)();
795 }
796 }
797
798 // Runs TearDownTestSuite() for this TestSuite. This wrapper is
799 // needed for catching exceptions thrown from TearDownTestSuite().
800 void RunTearDownTestSuite() {
801 if (tear_down_tc_ != nullptr) {
802 (*tear_down_tc_)();
803 }
804 }
805
806 // Returns true if and only if test passed.
807 static bool TestPassed(const TestInfo* test_info) {
808 return test_info->should_run() && test_info->result()->Passed();
809 }
810
811 // Returns true if and only if test skipped.
812 static bool TestSkipped(const TestInfo* test_info) {
813 return test_info->should_run() && test_info->result()->Skipped();
814 }
815
816 // Returns true if and only if test failed.
817 static bool TestFailed(const TestInfo* test_info) {
818 return test_info->should_run() && test_info->result()->Failed();
819 }
820
821 // Returns true if and only if the test is disabled and will be reported in
822 // the XML report.
823 static bool TestReportableDisabled(const TestInfo* test_info) {
824 return test_info->is_reportable() && test_info->is_disabled_;
825 }
826
827 // Returns true if and only if test is disabled.
828 static bool TestDisabled(const TestInfo* test_info) {
829 return test_info->is_disabled_;
830 }
831
832 // Returns true if and only if this test will appear in the XML report.
833 static bool TestReportable(const TestInfo* test_info) {
834 return test_info->is_reportable();
835 }
836
837 // Returns true if the given test should run.
838 static bool ShouldRunTest(const TestInfo* test_info) {
839 return test_info->should_run();
840 }
841
842 // Shuffles the tests in this test suite.
843 void ShuffleTests(internal::Random* random);
844
845 // Restores the test order to before the first shuffle.
846 void UnshuffleTests();
847
848 // Name of the test suite.
849 std::string name_;
850 // Name of the parameter type, or NULL if this is not a typed or a
851 // type-parameterized test.
852 const std::unique_ptr<const ::std::string> type_param_;
853 // The vector of TestInfos in their original order. It owns the
854 // elements in the vector.
855 std::vector<TestInfo*> test_info_list_;
856 // Provides a level of indirection for the test list to allow easy
857 // shuffling and restoring the test order. The i-th element in this
858 // vector is the index of the i-th test in the shuffled test list.
859 std::vector<int> test_indices_;
860 // Pointer to the function that sets up the test suite.
861 internal::SetUpTestSuiteFunc set_up_tc_;
862 // Pointer to the function that tears down the test suite.
863 internal::TearDownTestSuiteFunc tear_down_tc_;
864 // True if and only if any test in this test suite should run.
865 bool should_run_;
866 // The start time, in milliseconds since UNIX Epoch.
867 TimeInMillis start_timestamp_;
868 // Elapsed time, in milliseconds.
869 TimeInMillis elapsed_time_;
870 // Holds test properties recorded during execution of SetUpTestSuite and
871 // TearDownTestSuite.
872 TestResult ad_hoc_test_result_;
873
874 // We disallow copying TestSuites.
875 TestSuite(const TestSuite&) = delete;
876 TestSuite& operator=(const TestSuite&) = delete;
877};
878
879// An Environment object is capable of setting up and tearing down an
880// environment. You should subclass this to define your own
881// environment(s).
882//
883// An Environment object does the set-up and tear-down in virtual
884// methods SetUp() and TearDown() instead of the constructor and the
885// destructor, as:
886//
887// 1. You cannot safely throw from a destructor. This is a problem
888// as in some cases Google Test is used where exceptions are enabled, and
889// we may want to implement ASSERT_* using exceptions where they are
890// available.
891// 2. You cannot use ASSERT_* directly in a constructor or
892// destructor.
893class Environment {
894 public:
895 // The d'tor is virtual as we need to subclass Environment.
896 virtual ~Environment() = default;
897
898 // Override this to define how to set up the environment.
899 virtual void SetUp() {}
900
901 // Override this to define how to tear down the environment.
902 virtual void TearDown() {}
903
904 private:
905 // If you see an error about overriding the following function or
906 // about it being private, you have mis-spelled SetUp() as Setup().
907 struct Setup_should_be_spelled_SetUp {};
908 virtual Setup_should_be_spelled_SetUp* Setup() { return nullptr; }
909};
910
911#if GTEST_HAS_EXCEPTIONS
912
913// Exception which can be thrown from TestEventListener::OnTestPartResult.
914class GTEST_API_ AssertionException
915 : public internal::GoogleTestFailureException {
916 public:
917 explicit AssertionException(const TestPartResult& result)
918 : GoogleTestFailureException(result) {}
919};
920
921#endif // GTEST_HAS_EXCEPTIONS
922
923// The interface for tracing execution of tests. The methods are organized in
924// the order the corresponding events are fired.
925class TestEventListener {
926 public:
927 virtual ~TestEventListener() = default;
928
929 // Fired before any test activity starts.
930 virtual void OnTestProgramStart(const UnitTest& unit_test) = 0;
931
932 // Fired before each iteration of tests starts. There may be more than
933 // one iteration if GTEST_FLAG(repeat) is set. iteration is the iteration
934 // index, starting from 0.
935 virtual void OnTestIterationStart(const UnitTest& unit_test,
936 int iteration) = 0;
937
938 // Fired before environment set-up for each iteration of tests starts.
939 virtual void OnEnvironmentsSetUpStart(const UnitTest& unit_test) = 0;
940
941 // Fired after environment set-up for each iteration of tests ends.
942 virtual void OnEnvironmentsSetUpEnd(const UnitTest& unit_test) = 0;
943
944 // Fired before the test suite starts.
945 virtual void OnTestSuiteStart(const TestSuite& /*test_suite*/) {}
946
947 // Legacy API is deprecated but still available
948#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
949 virtual void OnTestCaseStart(const TestCase& /*test_case*/) {}
950#endif // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
951
952 // Fired before the test starts.
953 virtual void OnTestStart(const TestInfo& test_info) = 0;
954
955 // Fired when a test is disabled
956 virtual void OnTestDisabled(const TestInfo& /*test_info*/) {}
957
958 // Fired after a failed assertion or a SUCCEED() invocation.
959 // If you want to throw an exception from this function to skip to the next
960 // TEST, it must be AssertionException defined above, or inherited from it.
961 virtual void OnTestPartResult(const TestPartResult& test_part_result) = 0;
962
963 // Fired after the test ends.
964 virtual void OnTestEnd(const TestInfo& test_info) = 0;
965
966 // Fired after the test suite ends.
967 virtual void OnTestSuiteEnd(const TestSuite& /*test_suite*/) {}
968
969// Legacy API is deprecated but still available
970#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
971 virtual void OnTestCaseEnd(const TestCase& /*test_case*/) {}
972#endif // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
973
974 // Fired before environment tear-down for each iteration of tests starts.
975 virtual void OnEnvironmentsTearDownStart(const UnitTest& unit_test) = 0;
976
977 // Fired after environment tear-down for each iteration of tests ends.
978 virtual void OnEnvironmentsTearDownEnd(const UnitTest& unit_test) = 0;
979
980 // Fired after each iteration of tests finishes.
981 virtual void OnTestIterationEnd(const UnitTest& unit_test, int iteration) = 0;
982
983 // Fired after all test activities have ended.
984 virtual void OnTestProgramEnd(const UnitTest& unit_test) = 0;
985};
986
987// The convenience class for users who need to override just one or two
988// methods and are not concerned that a possible change to a signature of
989// the methods they override will not be caught during the build. For
990// comments about each method please see the definition of TestEventListener
991// above.
992class EmptyTestEventListener : public TestEventListener {
993 public:
994 void OnTestProgramStart(const UnitTest& /*unit_test*/) override {}
995 void OnTestIterationStart(const UnitTest& /*unit_test*/,
996 int /*iteration*/) override {}
997 void OnEnvironmentsSetUpStart(const UnitTest& /*unit_test*/) override {}
998 void OnEnvironmentsSetUpEnd(const UnitTest& /*unit_test*/) override {}
999 void OnTestSuiteStart(const TestSuite& /*test_suite*/) override {}
1000// Legacy API is deprecated but still available
1001#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
1002 void OnTestCaseStart(const TestCase& /*test_case*/) override {}
1003#endif // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
1004
1005 void OnTestStart(const TestInfo& /*test_info*/) override {}
1006 void OnTestDisabled(const TestInfo& /*test_info*/) override {}
1007 void OnTestPartResult(const TestPartResult& /*test_part_result*/) override {}
1008 void OnTestEnd(const TestInfo& /*test_info*/) override {}
1009 void OnTestSuiteEnd(const TestSuite& /*test_suite*/) override {}
1010#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
1011 void OnTestCaseEnd(const TestCase& /*test_case*/) override {}
1012#endif // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
1013
1014 void OnEnvironmentsTearDownStart(const UnitTest& /*unit_test*/) override {}
1015 void OnEnvironmentsTearDownEnd(const UnitTest& /*unit_test*/) override {}
1016 void OnTestIterationEnd(const UnitTest& /*unit_test*/,
1017 int /*iteration*/) override {}
1018 void OnTestProgramEnd(const UnitTest& /*unit_test*/) override {}
1019};
1020
1021// TestEventListeners lets users add listeners to track events in Google Test.
1022class GTEST_API_ TestEventListeners {
1023 public:
1024 TestEventListeners();
1025 ~TestEventListeners();
1026
1027 // Appends an event listener to the end of the list. Google Test assumes
1028 // the ownership of the listener (i.e. it will delete the listener when
1029 // the test program finishes).
1030 void Append(TestEventListener* listener);
1031
1032 // Removes the given event listener from the list and returns it. It then
1033 // becomes the caller's responsibility to delete the listener. Returns
1034 // NULL if the listener is not found in the list.
1035 TestEventListener* Release(TestEventListener* listener);
1036
1037 // Returns the standard listener responsible for the default console
1038 // output. Can be removed from the listeners list to shut down default
1039 // console output. Note that removing this object from the listener list
1040 // with Release transfers its ownership to the caller and makes this
1041 // function return NULL the next time.
1042 TestEventListener* default_result_printer() const {
1043 return default_result_printer_;
1044 }
1045
1046 // Returns the standard listener responsible for the default XML output
1047 // controlled by the --gtest_output=xml flag. Can be removed from the
1048 // listeners list by users who want to shut down the default XML output
1049 // controlled by this flag and substitute it with custom one. Note that
1050 // removing this object from the listener list with Release transfers its
1051 // ownership to the caller and makes this function return NULL the next
1052 // time.
1053 TestEventListener* default_xml_generator() const {
1054 return default_xml_generator_;
1055 }
1056
1057 // Controls whether events will be forwarded by the repeater to the
1058 // listeners in the list.
1059 void SuppressEventForwarding(bool);
1060
1061 private:
1062 friend class TestSuite;
1063 friend class TestInfo;
1064 friend class internal::DefaultGlobalTestPartResultReporter;
1065 friend class internal::NoExecDeathTest;
1066 friend class internal::TestEventListenersAccessor;
1067 friend class internal::UnitTestImpl;
1068
1069 // Returns repeater that broadcasts the TestEventListener events to all
1070 // subscribers.
1071 TestEventListener* repeater();
1072
1073 // Sets the default_result_printer attribute to the provided listener.
1074 // The listener is also added to the listener list and previous
1075 // default_result_printer is removed from it and deleted. The listener can
1076 // also be NULL in which case it will not be added to the list. Does
1077 // nothing if the previous and the current listener objects are the same.
1078 void SetDefaultResultPrinter(TestEventListener* listener);
1079
1080 // Sets the default_xml_generator attribute to the provided listener. The
1081 // listener is also added to the listener list and previous
1082 // default_xml_generator is removed from it and deleted. The listener can
1083 // also be NULL in which case it will not be added to the list. Does
1084 // nothing if the previous and the current listener objects are the same.
1085 void SetDefaultXmlGenerator(TestEventListener* listener);
1086
1087 // Controls whether events will be forwarded by the repeater to the
1088 // listeners in the list.
1089 bool EventForwardingEnabled() const;
1090
1091 // The actual list of listeners.
1092 internal::TestEventRepeater* repeater_;
1093 // Listener responsible for the standard result output.
1094 TestEventListener* default_result_printer_;
1095 // Listener responsible for the creation of the XML output file.
1096 TestEventListener* default_xml_generator_;
1097
1098 // We disallow copying TestEventListeners.
1099 TestEventListeners(const TestEventListeners&) = delete;
1100 TestEventListeners& operator=(const TestEventListeners&) = delete;
1101};
1102
1103// A UnitTest consists of a vector of TestSuites.
1104//
1105// This is a singleton class. The only instance of UnitTest is
1106// created when UnitTest::GetInstance() is first called. This
1107// instance is never deleted.
1108//
1109// UnitTest is not copyable.
1110//
1111// This class is thread-safe as long as the methods are called
1112// according to their specification.
1113class GTEST_API_ UnitTest {
1114 public:
1115 // Gets the singleton UnitTest object. The first time this method
1116 // is called, a UnitTest object is constructed and returned.
1117 // Consecutive calls will return the same object.
1118 static UnitTest* GetInstance();
1119
1120 // Runs all tests in this UnitTest object and prints the result.
1121 // Returns 0 if successful, or 1 otherwise.
1122 //
1123 // This method can only be called from the main thread.
1124 //
1125 // INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
1126 [[nodiscard]] int Run();
1127
1128 // Returns the working directory when the first TEST() or TEST_F()
1129 // was executed. The UnitTest object owns the string.
1130 const char* original_working_dir() const;
1131
1132 // Returns the TestSuite object for the test that's currently running,
1133 // or NULL if no test is running.
1134 const TestSuite* current_test_suite() const GTEST_LOCK_EXCLUDED_(mutex_);
1135
1136// Legacy API is still available but deprecated
1137#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
1138 const TestCase* current_test_case() const GTEST_LOCK_EXCLUDED_(mutex_);
1139#endif
1140
1141 // Returns the TestInfo object for the test that's currently running,
1142 // or NULL if no test is running.
1143 const TestInfo* current_test_info() const GTEST_LOCK_EXCLUDED_(mutex_);
1144
1145 // Returns the random seed used at the start of the current test run.
1146 int random_seed() const;
1147
1148 // Returns the ParameterizedTestSuiteRegistry object used to keep track of
1149 // value-parameterized tests and instantiate and register them.
1150 //
1151 // INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
1152 internal::ParameterizedTestSuiteRegistry& parameterized_test_registry()
1153 GTEST_LOCK_EXCLUDED_(mutex_);
1154
1155 // Gets the number of successful test suites.
1156 int successful_test_suite_count() const;
1157
1158 // Gets the number of failed test suites.
1159 int failed_test_suite_count() const;
1160
1161 // Gets the number of all test suites.
1162 int total_test_suite_count() const;
1163
1164 // Gets the number of all test suites that contain at least one test
1165 // that should run.
1166 int test_suite_to_run_count() const;
1167
1168 // Legacy API is deprecated but still available
1169#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
1170 int successful_test_case_count() const;
1171 int failed_test_case_count() const;
1172 int total_test_case_count() const;
1173 int test_case_to_run_count() const;
1174#endif // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
1175
1176 // Gets the number of successful tests.
1177 int successful_test_count() const;
1178
1179 // Gets the number of skipped tests.
1180 int skipped_test_count() const;
1181
1182 // Gets the number of failed tests.
1183 int failed_test_count() const;
1184
1185 // Gets the number of disabled tests that will be reported in the XML report.
1186 int reportable_disabled_test_count() const;
1187
1188 // Gets the number of disabled tests.
1189 int disabled_test_count() const;
1190
1191 // Gets the number of tests to be printed in the XML report.
1192 int reportable_test_count() const;
1193
1194 // Gets the number of all tests.
1195 int total_test_count() const;
1196
1197 // Gets the number of tests that should run.
1198 int test_to_run_count() const;
1199
1200 // Gets the time of the test program start, in ms from the start of the
1201 // UNIX epoch.
1202 TimeInMillis start_timestamp() const;
1203
1204 // Gets the elapsed time, in milliseconds.
1205 TimeInMillis elapsed_time() const;
1206
1207 // Returns true if and only if the unit test passed (i.e. all test suites
1208 // passed).
1209 bool Passed() const;
1210
1211 // Returns true if and only if the unit test failed (i.e. some test suite
1212 // failed or something outside of all tests failed).
1213 bool Failed() const;
1214
1215 // Gets the i-th test suite among all the test suites. i can range from 0 to
1216 // total_test_suite_count() - 1. If i is not in that range, returns NULL.
1217 const TestSuite* GetTestSuite(int i) const;
1218
1219// Legacy API is deprecated but still available
1220#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
1221 const TestCase* GetTestCase(int i) const;
1222#endif // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
1223
1224 // Returns the TestResult containing information on test failures and
1225 // properties logged outside of individual test suites.
1226 const TestResult& ad_hoc_test_result() const;
1227
1228 // Returns the list of event listeners that can be used to track events
1229 // inside Google Test.
1230 TestEventListeners& listeners();
1231
1232 private:
1233 // Registers and returns a global test environment. When a test
1234 // program is run, all global test environments will be set-up in
1235 // the order they were registered. After all tests in the program
1236 // have finished, all global test environments will be torn-down in
1237 // the *reverse* order they were registered.
1238 //
1239 // The UnitTest object takes ownership of the given environment.
1240 //
1241 // This method can only be called from the main thread.
1242 Environment* AddEnvironment(Environment* env);
1243
1244 // Adds a TestPartResult to the current TestResult object. All
1245 // Google Test assertion macros (e.g. ASSERT_TRUE, EXPECT_EQ, etc)
1246 // eventually call this to report their results. The user code
1247 // should use the assertion macros instead of calling this directly.
1248 void AddTestPartResult(TestPartResult::Type result_type,
1249 const char* file_name, int line_number,
1250 const std::string& message,
1251 const std::string& os_stack_trace)
1252 GTEST_LOCK_EXCLUDED_(mutex_);
1253
1254 // Adds a TestProperty to the current TestResult object when invoked from
1255 // inside a test, to current TestSuite's ad_hoc_test_result_ when invoked
1256 // from SetUpTestSuite or TearDownTestSuite, or to the global property set
1257 // when invoked elsewhere. If the result already contains a property with
1258 // the same key, the value will be updated.
1259 void RecordProperty(const std::string& key, const std::string& value);
1260
1261 // Gets the i-th test suite among all the test suites. i can range from 0 to
1262 // total_test_suite_count() - 1. If i is not in that range, returns NULL.
1263 TestSuite* GetMutableTestSuite(int i);
1264
1265 // Invokes OsStackTrackGetterInterface::UponLeavingGTest. UponLeavingGTest()
1266 // should be called immediately before Google Test calls user code. It saves
1267 // some information about the current stack that CurrentStackTrace() will use
1268 // to find and hide Google Test stack frames.
1269 void UponLeavingGTest();
1270
1271 // Sets the TestSuite object for the test that's currently running.
1272 void set_current_test_suite(TestSuite* a_current_test_suite)
1273 GTEST_LOCK_EXCLUDED_(mutex_);
1274
1275 // Sets the TestInfo object for the test that's currently running.
1276 void set_current_test_info(TestInfo* a_current_test_info)
1277 GTEST_LOCK_EXCLUDED_(mutex_);
1278
1279 // Accessors for the implementation object.
1280 internal::UnitTestImpl* impl() { return impl_; }
1281 const internal::UnitTestImpl* impl() const { return impl_; }
1282
1283 // These classes and functions are friends as they need to access private
1284 // members of UnitTest.
1285 friend class ScopedTrace;
1286 friend class Test;
1287 friend class TestInfo;
1288 friend class TestSuite;
1289 friend class internal::AssertHelper;
1290 friend class internal::StreamingListenerTest;
1291 friend class internal::UnitTestRecordPropertyTestHelper;
1292 friend Environment* AddGlobalTestEnvironment(Environment* env);
1293 friend std::set<std::string>* internal::GetIgnoredParameterizedTestSuites();
1294 friend internal::UnitTestImpl* internal::GetUnitTestImpl();
1295 friend void internal::ReportFailureInUnknownLocation(
1296 TestPartResult::Type result_type, const std::string& message);
1297
1298 // Creates an empty UnitTest.
1299 UnitTest();
1300
1301 // D'tor
1302 virtual ~UnitTest();
1303
1304 // Pushes a trace defined by SCOPED_TRACE() on to the per-thread
1305 // Google Test trace stack.
1306 void PushGTestTrace(const internal::TraceInfo& trace)
1307 GTEST_LOCK_EXCLUDED_(mutex_);
1308
1309 // Pops a trace from the per-thread Google Test trace stack.
1310 void PopGTestTrace() GTEST_LOCK_EXCLUDED_(mutex_);
1311
1312 // Protects mutable state in *impl_. This is mutable as some const
1313 // methods need to lock it too.
1314 mutable internal::Mutex mutex_;
1315
1316 // Opaque implementation object. This field is never changed once
1317 // the object is constructed. We don't mark it as const here, as
1318 // doing so will cause a warning in the constructor of UnitTest.
1319 // Mutable state in *impl_ is protected by mutex_.
1320 internal::UnitTestImpl* impl_;
1321
1322 // We disallow copying UnitTest.
1323 UnitTest(const UnitTest&) = delete;
1324 UnitTest& operator=(const UnitTest&) = delete;
1325};
1326
1327// A convenient wrapper for adding an environment for the test
1328// program.
1329//
1330// You should call this before RUN_ALL_TESTS() is called, probably in
1331// main(). If you use gtest_main, you need to call this before main()
1332// starts for it to take effect. For example, you can define a global
1333// variable like this:
1334//
1335// testing::Environment* const foo_env =
1336// testing::AddGlobalTestEnvironment(new FooEnvironment);
1337//
1338// However, we strongly recommend you to write your own main() and
1339// call AddGlobalTestEnvironment() there, as relying on initialization
1340// of global variables makes the code harder to read and may cause
1341// problems when you register multiple environments from different
1342// translation units and the environments have dependencies among them
1343// (remember that the compiler doesn't guarantee the order in which
1344// global variables from different translation units are initialized).
1345inline Environment* AddGlobalTestEnvironment(Environment* env) {
1346 return UnitTest::GetInstance()->AddEnvironment(env);
1347}
1348
1349// Initializes Google Test. This must be called before calling
1350// RUN_ALL_TESTS(). In particular, it parses a command line for the
1351// flags that Google Test recognizes. Whenever a Google Test flag is
1352// seen, it is removed from argv, and *argc is decremented.
1353//
1354// No value is returned. Instead, the Google Test flag variables are
1355// updated.
1356//
1357// Calling the function for the second time has no user-visible effect.
1358GTEST_API_ void InitGoogleTest(int* argc, char** argv);
1359
1360// This overloaded version can be used in Windows programs compiled in
1361// UNICODE mode.
1362GTEST_API_ void InitGoogleTest(int* argc, wchar_t** argv);
1363
1364// This overloaded version can be used on Arduino/embedded platforms where
1365// there is no argc/argv.
1366GTEST_API_ void InitGoogleTest();
1367
1368namespace internal {
1369
1370// Separate the error generating code from the code path to reduce the stack
1371// frame size of CmpHelperEQ. This helps reduce the overhead of some sanitizers
1372// when calling EXPECT_* in a tight loop.
1373template <typename T1, typename T2>
1374AssertionResult CmpHelperEQFailure(const char* lhs_expression,
1375 const char* rhs_expression, const T1& lhs,
1376 const T2& rhs) {
1377 return EqFailure(lhs_expression, rhs_expression,
1378 FormatForComparisonFailureMessage(lhs, rhs),
1379 FormatForComparisonFailureMessage(rhs, lhs), false);
1380}
1381
1382// This block of code defines operator==/!=
1383// to block lexical scope lookup.
1384// It prevents using invalid operator==/!= defined at namespace scope.
1385struct faketype {};
1386inline bool operator==(faketype, faketype) { return true; }
1387inline bool operator!=(faketype, faketype) { return false; }
1388
1389// The helper function for {ASSERT|EXPECT}_EQ.
1390template <typename T1, typename T2>
1391AssertionResult CmpHelperEQ(const char* lhs_expression,
1392 const char* rhs_expression, const T1& lhs,
1393 const T2& rhs) {
1394 if (lhs == rhs) {
1395 return AssertionSuccess();
1396 }
1397
1398 return CmpHelperEQFailure(lhs_expression, rhs_expression, lhs, rhs);
1399}
1400
1401class EqHelper {
1402 public:
1403 // This templatized version is for the general case.
1404 template <
1405 typename T1, typename T2,
1406 // Disable this overload for cases where one argument is a pointer
1407 // and the other is the null pointer constant.
1408 typename std::enable_if<!std::is_integral<T1>::value ||
1409 !std::is_pointer<T2>::value>::type* = nullptr>
1410 static AssertionResult Compare(const char* lhs_expression,
1411 const char* rhs_expression, const T1& lhs,
1412 const T2& rhs) {
1413 return CmpHelperEQ(lhs_expression, rhs_expression, lhs, rhs);
1414 }
1415
1416 // With this overloaded version, we allow anonymous enums to be used
1417 // in {ASSERT|EXPECT}_EQ when compiled with gcc 4, as anonymous
1418 // enums can be implicitly cast to BiggestInt.
1419 //
1420 // Even though its body looks the same as the above version, we
1421 // cannot merge the two, as it will make anonymous enums unhappy.
1422 static AssertionResult Compare(const char* lhs_expression,
1423 const char* rhs_expression, BiggestInt lhs,
1424 BiggestInt rhs) {
1425 return CmpHelperEQ(lhs_expression, rhs_expression, lhs, rhs);
1426 }
1427
1428 template <typename T>
1429 static AssertionResult Compare(
1430 const char* lhs_expression, const char* rhs_expression,
1431 // Handle cases where '0' is used as a null pointer literal.
1432 std::nullptr_t /* lhs */, T* rhs) {
1433 // We already know that 'lhs' is a null pointer.
1434 return CmpHelperEQ(lhs_expression, rhs_expression, static_cast<T*>(nullptr),
1435 rhs);
1436 }
1437};
1438
1439// Separate the error generating code from the code path to reduce the stack
1440// frame size of CmpHelperOP. This helps reduce the overhead of some sanitizers
1441// when calling EXPECT_OP in a tight loop.
1442template <typename T1, typename T2>
1443AssertionResult CmpHelperOpFailure(const char* expr1, const char* expr2,
1444 const T1& val1, const T2& val2,
1445 const char* op) {
1446 return AssertionFailure()
1447 << "Expected: (" << expr1 << ") " << op << " (" << expr2
1448 << "), actual: " << FormatForComparisonFailureMessage(val1, val2)
1449 << " vs " << FormatForComparisonFailureMessage(val2, val1);
1450}
1451
1452// A macro for implementing the helper functions needed to implement
1453// ASSERT_?? and EXPECT_??. It is here just to avoid copy-and-paste
1454// of similar code.
1455//
1456// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
1457
1458#define GTEST_IMPL_CMP_HELPER_(op_name, op) \
1459 template <typename T1, typename T2> \
1460 AssertionResult CmpHelper##op_name(const char* expr1, const char* expr2, \
1461 const T1& val1, const T2& val2) { \
1462 if (val1 op val2) { \
1463 return AssertionSuccess(); \
1464 } else { \
1465 return CmpHelperOpFailure(expr1, expr2, val1, val2, #op); \
1466 } \
1467 }
1468
1469// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
1470
1471// Implements the helper function for {ASSERT|EXPECT}_NE
1472GTEST_IMPL_CMP_HELPER_(NE, !=)
1473// Implements the helper function for {ASSERT|EXPECT}_LE
1474GTEST_IMPL_CMP_HELPER_(LE, <=)
1475// Implements the helper function for {ASSERT|EXPECT}_LT
1476GTEST_IMPL_CMP_HELPER_(LT, <)
1477// Implements the helper function for {ASSERT|EXPECT}_GE
1478GTEST_IMPL_CMP_HELPER_(GE, >=)
1479// Implements the helper function for {ASSERT|EXPECT}_GT
1480GTEST_IMPL_CMP_HELPER_(GT, >)
1481
1482#undef GTEST_IMPL_CMP_HELPER_
1483
1484// The helper function for {ASSERT|EXPECT}_STREQ.
1485//
1486// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
1487GTEST_API_ AssertionResult CmpHelperSTREQ(const char* s1_expression,
1488 const char* s2_expression,
1489 const char* s1, const char* s2);
1490
1491// The helper function for {ASSERT|EXPECT}_STRCASEEQ.
1492//
1493// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
1494GTEST_API_ AssertionResult CmpHelperSTRCASEEQ(const char* s1_expression,
1495 const char* s2_expression,
1496 const char* s1, const char* s2);
1497
1498// The helper function for {ASSERT|EXPECT}_STRNE.
1499//
1500// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
1501GTEST_API_ AssertionResult CmpHelperSTRNE(const char* s1_expression,
1502 const char* s2_expression,
1503 const char* s1, const char* s2);
1504
1505// The helper function for {ASSERT|EXPECT}_STRCASENE.
1506//
1507// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
1508GTEST_API_ AssertionResult CmpHelperSTRCASENE(const char* s1_expression,
1509 const char* s2_expression,
1510 const char* s1, const char* s2);
1511
1512// Helper function for *_STREQ on wide strings.
1513//
1514// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
1515GTEST_API_ AssertionResult CmpHelperSTREQ(const char* s1_expression,
1516 const char* s2_expression,
1517 const wchar_t* s1, const wchar_t* s2);
1518
1519// Helper function for *_STRNE on wide strings.
1520//
1521// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
1522GTEST_API_ AssertionResult CmpHelperSTRNE(const char* s1_expression,
1523 const char* s2_expression,
1524 const wchar_t* s1, const wchar_t* s2);
1525
1526} // namespace internal
1527
1528// IsSubstring() and IsNotSubstring() are intended to be used as the
1529// first argument to {EXPECT,ASSERT}_PRED_FORMAT2(), not by
1530// themselves. They check whether needle is a substring of haystack
1531// (NULL is considered a substring of itself only), and return an
1532// appropriate error message when they fail.
1533//
1534// The {needle,haystack}_expr arguments are the stringified
1535// expressions that generated the two real arguments.
1536GTEST_API_ AssertionResult IsSubstring(const char* needle_expr,
1537 const char* haystack_expr,
1538 const char* needle,
1539 const char* haystack);
1540GTEST_API_ AssertionResult IsSubstring(const char* needle_expr,
1541 const char* haystack_expr,
1542 const wchar_t* needle,
1543 const wchar_t* haystack);
1544GTEST_API_ AssertionResult IsNotSubstring(const char* needle_expr,
1545 const char* haystack_expr,
1546 const char* needle,
1547 const char* haystack);
1548GTEST_API_ AssertionResult IsNotSubstring(const char* needle_expr,
1549 const char* haystack_expr,
1550 const wchar_t* needle,
1551 const wchar_t* haystack);
1552GTEST_API_ AssertionResult IsSubstring(const char* needle_expr,
1553 const char* haystack_expr,
1554 const ::std::string& needle,
1555 const ::std::string& haystack);
1556GTEST_API_ AssertionResult IsNotSubstring(const char* needle_expr,
1557 const char* haystack_expr,
1558 const ::std::string& needle,
1559 const ::std::string& haystack);
1560
1561#if GTEST_HAS_STD_WSTRING
1562GTEST_API_ AssertionResult IsSubstring(const char* needle_expr,
1563 const char* haystack_expr,
1564 const ::std::wstring& needle,
1565 const ::std::wstring& haystack);
1566GTEST_API_ AssertionResult IsNotSubstring(const char* needle_expr,
1567 const char* haystack_expr,
1568 const ::std::wstring& needle,
1569 const ::std::wstring& haystack);
1570#endif // GTEST_HAS_STD_WSTRING
1571
1572namespace internal {
1573
1574// Helper template function for comparing floating-points.
1575//
1576// Template parameter:
1577//
1578// RawType: the raw floating-point type (either float or double)
1579//
1580// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
1581template <typename RawType>
1582AssertionResult CmpHelperFloatingPointEQ(const char* lhs_expression,
1583 const char* rhs_expression,
1584 RawType lhs_value, RawType rhs_value) {
1585 const FloatingPoint<RawType> lhs(lhs_value), rhs(rhs_value);
1586
1587 if (lhs.AlmostEquals(rhs)) {
1588 return AssertionSuccess();
1589 }
1590
1591 ::std::stringstream lhs_ss;
1592 lhs_ss.precision(std::numeric_limits<RawType>::digits10 + 2);
1593 lhs_ss << lhs_value;
1594
1595 ::std::stringstream rhs_ss;
1596 rhs_ss.precision(std::numeric_limits<RawType>::digits10 + 2);
1597 rhs_ss << rhs_value;
1598
1599 return EqFailure(expected_expression: lhs_expression, actual_expression: rhs_expression,
1600 expected_value: StringStreamToString(stream: &lhs_ss), actual_value: StringStreamToString(stream: &rhs_ss),
1601 ignoring_case: false);
1602}
1603
1604// Helper function for implementing ASSERT_NEAR.
1605//
1606// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
1607GTEST_API_ AssertionResult DoubleNearPredFormat(const char* expr1,
1608 const char* expr2,
1609 const char* abs_error_expr,
1610 double val1, double val2,
1611 double abs_error);
1612
1613// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
1614// A class that enables one to stream messages to assertion macros
1615class GTEST_API_ AssertHelper {
1616 public:
1617 // Constructor.
1618 AssertHelper(TestPartResult::Type type, const char* file, int line,
1619 const char* message);
1620 ~AssertHelper();
1621
1622 // Message assignment is a semantic trick to enable assertion
1623 // streaming; see the GTEST_MESSAGE_ macro below.
1624 void operator=(const Message& message) const;
1625
1626 private:
1627 // We put our data in a struct so that the size of the AssertHelper class can
1628 // be as small as possible. This is important because gcc is incapable of
1629 // re-using stack space even for temporary variables, so every EXPECT_EQ
1630 // reserves stack space for another AssertHelper.
1631 struct AssertHelperData {
1632 AssertHelperData(TestPartResult::Type t, const char* srcfile, int line_num,
1633 const char* msg)
1634 : type(t), file(srcfile), line(line_num), message(msg) {}
1635
1636 TestPartResult::Type const type;
1637 const char* const file;
1638 int const line;
1639 std::string const message;
1640
1641 private:
1642 AssertHelperData(const AssertHelperData&) = delete;
1643 AssertHelperData& operator=(const AssertHelperData&) = delete;
1644 };
1645
1646 AssertHelperData* const data_;
1647
1648 AssertHelper(const AssertHelper&) = delete;
1649 AssertHelper& operator=(const AssertHelper&) = delete;
1650};
1651
1652} // namespace internal
1653
1654// The pure interface class that all value-parameterized tests inherit from.
1655// A value-parameterized class must inherit from both ::testing::Test and
1656// ::testing::WithParamInterface. In most cases that just means inheriting
1657// from ::testing::TestWithParam, but more complicated test hierarchies
1658// may need to inherit from Test and WithParamInterface at different levels.
1659//
1660// This interface has support for accessing the test parameter value via
1661// the GetParam() method.
1662//
1663// Use it with one of the parameter generator defining functions, like Range(),
1664// Values(), ValuesIn(), Bool(), Combine(), and ConvertGenerator<T>().
1665//
1666// class FooTest : public ::testing::TestWithParam<int> {
1667// protected:
1668// FooTest() {
1669// // Can use GetParam() here.
1670// }
1671// ~FooTest() override {
1672// // Can use GetParam() here.
1673// }
1674// void SetUp() override {
1675// // Can use GetParam() here.
1676// }
1677// void TearDown override {
1678// // Can use GetParam() here.
1679// }
1680// };
1681// TEST_P(FooTest, DoesBar) {
1682// // Can use GetParam() method here.
1683// Foo foo;
1684// ASSERT_TRUE(foo.DoesBar(GetParam()));
1685// }
1686// INSTANTIATE_TEST_SUITE_P(OneToTenRange, FooTest, ::testing::Range(1, 10));
1687
1688template <typename T>
1689class WithParamInterface {
1690 public:
1691 typedef T ParamType;
1692 virtual ~WithParamInterface() = default;
1693
1694 // The current parameter value. Is also available in the test fixture's
1695 // constructor.
1696 static const ParamType& GetParam() {
1697 GTEST_CHECK_(parameter_ != nullptr)
1698 << "GetParam() can only be called inside a value-parameterized test "
1699 << "-- did you intend to write TEST_P instead of TEST_F?";
1700 return *parameter_;
1701 }
1702
1703 private:
1704 // Sets parameter value. The caller is responsible for making sure the value
1705 // remains alive and unchanged throughout the current test.
1706 static void SetParam(const ParamType* parameter) { parameter_ = parameter; }
1707
1708 // Static value used for accessing parameter during a test lifetime.
1709 static const ParamType* parameter_;
1710
1711 // TestClass must be a subclass of WithParamInterface<T> and Test.
1712 template <class TestClass>
1713 friend class internal::ParameterizedTestFactory;
1714};
1715
1716template <typename T>
1717const T* WithParamInterface<T>::parameter_ = nullptr;
1718
1719// Most value-parameterized classes can ignore the existence of
1720// WithParamInterface, and can just inherit from ::testing::TestWithParam.
1721
1722template <typename T>
1723class TestWithParam : public Test, public WithParamInterface<T> {};
1724
1725// Macros for indicating success/failure in test code.
1726
1727// Skips test in runtime.
1728// Skipping test aborts current function.
1729// Skipped tests are neither successful nor failed.
1730#define GTEST_SKIP() GTEST_SKIP_("")
1731
1732// ADD_FAILURE unconditionally adds a failure to the current test.
1733// SUCCEED generates a success - it doesn't automatically make the
1734// current test successful, as a test is only successful when it has
1735// no failure.
1736//
1737// EXPECT_* verifies that a certain condition is satisfied. If not,
1738// it behaves like ADD_FAILURE. In particular:
1739//
1740// EXPECT_TRUE verifies that a Boolean condition is true.
1741// EXPECT_FALSE verifies that a Boolean condition is false.
1742//
1743// FAIL and ASSERT_* are similar to ADD_FAILURE and EXPECT_*, except
1744// that they will also abort the current function on failure. People
1745// usually want the fail-fast behavior of FAIL and ASSERT_*, but those
1746// writing data-driven tests often find themselves using ADD_FAILURE
1747// and EXPECT_* more.
1748
1749// Generates a nonfatal failure with a generic message.
1750#define ADD_FAILURE() GTEST_NONFATAL_FAILURE_("Failed")
1751
1752// Generates a nonfatal failure at the given source file location with
1753// a generic message.
1754#define ADD_FAILURE_AT(file, line) \
1755 GTEST_MESSAGE_AT_(file, line, "Failed", \
1756 ::testing::TestPartResult::kNonFatalFailure)
1757
1758// Generates a fatal failure with a generic message.
1759#define GTEST_FAIL() GTEST_FATAL_FAILURE_("Failed")
1760
1761// Like GTEST_FAIL(), but at the given source file location.
1762#define GTEST_FAIL_AT(file, line) \
1763 return GTEST_MESSAGE_AT_(file, line, "Failed", \
1764 ::testing::TestPartResult::kFatalFailure)
1765
1766// Define this macro to 1 to omit the definition of FAIL(), which is a
1767// generic name and clashes with some other libraries.
1768#if !(defined(GTEST_DONT_DEFINE_FAIL) && GTEST_DONT_DEFINE_FAIL)
1769#define FAIL() GTEST_FAIL()
1770#define FAIL_AT(file, line) GTEST_FAIL_AT(file, line)
1771#endif
1772
1773// Generates a success with a generic message.
1774#define GTEST_SUCCEED() GTEST_SUCCESS_("Succeeded")
1775
1776// Define this macro to 1 to omit the definition of SUCCEED(), which
1777// is a generic name and clashes with some other libraries.
1778#if !(defined(GTEST_DONT_DEFINE_SUCCEED) && GTEST_DONT_DEFINE_SUCCEED)
1779#define SUCCEED() GTEST_SUCCEED()
1780#endif
1781
1782// Macros for testing exceptions.
1783//
1784// * {ASSERT|EXPECT}_THROW(statement, expected_exception):
1785// Tests that the statement throws the expected exception.
1786// * {ASSERT|EXPECT}_NO_THROW(statement):
1787// Tests that the statement doesn't throw any exception.
1788// * {ASSERT|EXPECT}_ANY_THROW(statement):
1789// Tests that the statement throws an exception.
1790
1791#define EXPECT_THROW(statement, expected_exception) \
1792 GTEST_TEST_THROW_(statement, expected_exception, GTEST_NONFATAL_FAILURE_)
1793#define EXPECT_NO_THROW(statement) \
1794 GTEST_TEST_NO_THROW_(statement, GTEST_NONFATAL_FAILURE_)
1795#define EXPECT_ANY_THROW(statement) \
1796 GTEST_TEST_ANY_THROW_(statement, GTEST_NONFATAL_FAILURE_)
1797#define ASSERT_THROW(statement, expected_exception) \
1798 GTEST_TEST_THROW_(statement, expected_exception, GTEST_FATAL_FAILURE_)
1799#define ASSERT_NO_THROW(statement) \
1800 GTEST_TEST_NO_THROW_(statement, GTEST_FATAL_FAILURE_)
1801#define ASSERT_ANY_THROW(statement) \
1802 GTEST_TEST_ANY_THROW_(statement, GTEST_FATAL_FAILURE_)
1803
1804// Boolean assertions. Condition can be either a Boolean expression or an
1805// AssertionResult. For more information on how to use AssertionResult with
1806// these macros see comments on that class.
1807#define GTEST_EXPECT_TRUE(condition) \
1808 GTEST_TEST_BOOLEAN_(condition, #condition, false, true, \
1809 GTEST_NONFATAL_FAILURE_)
1810#define GTEST_EXPECT_FALSE(condition) \
1811 GTEST_TEST_BOOLEAN_(!(condition), #condition, true, false, \
1812 GTEST_NONFATAL_FAILURE_)
1813#define GTEST_ASSERT_TRUE(condition) \
1814 GTEST_TEST_BOOLEAN_(condition, #condition, false, true, GTEST_FATAL_FAILURE_)
1815#define GTEST_ASSERT_FALSE(condition) \
1816 GTEST_TEST_BOOLEAN_(!(condition), #condition, true, false, \
1817 GTEST_FATAL_FAILURE_)
1818
1819// Define these macros to 1 to omit the definition of the corresponding
1820// EXPECT or ASSERT, which clashes with some users' own code.
1821
1822#if !(defined(GTEST_DONT_DEFINE_EXPECT_TRUE) && GTEST_DONT_DEFINE_EXPECT_TRUE)
1823#define EXPECT_TRUE(condition) GTEST_EXPECT_TRUE(condition)
1824#endif
1825
1826#if !(defined(GTEST_DONT_DEFINE_EXPECT_FALSE) && GTEST_DONT_DEFINE_EXPECT_FALSE)
1827#define EXPECT_FALSE(condition) GTEST_EXPECT_FALSE(condition)
1828#endif
1829
1830#if !(defined(GTEST_DONT_DEFINE_ASSERT_TRUE) && GTEST_DONT_DEFINE_ASSERT_TRUE)
1831#define ASSERT_TRUE(condition) GTEST_ASSERT_TRUE(condition)
1832#endif
1833
1834#if !(defined(GTEST_DONT_DEFINE_ASSERT_FALSE) && GTEST_DONT_DEFINE_ASSERT_FALSE)
1835#define ASSERT_FALSE(condition) GTEST_ASSERT_FALSE(condition)
1836#endif
1837
1838// Macros for testing equalities and inequalities.
1839//
1840// * {ASSERT|EXPECT}_EQ(v1, v2): Tests that v1 == v2
1841// * {ASSERT|EXPECT}_NE(v1, v2): Tests that v1 != v2
1842// * {ASSERT|EXPECT}_LT(v1, v2): Tests that v1 < v2
1843// * {ASSERT|EXPECT}_LE(v1, v2): Tests that v1 <= v2
1844// * {ASSERT|EXPECT}_GT(v1, v2): Tests that v1 > v2
1845// * {ASSERT|EXPECT}_GE(v1, v2): Tests that v1 >= v2
1846//
1847// When they are not, Google Test prints both the tested expressions and
1848// their actual values. The values must be compatible built-in types,
1849// or you will get a compiler error. By "compatible" we mean that the
1850// values can be compared by the respective operator.
1851//
1852// Note:
1853//
1854// 1. It is possible to make a user-defined type work with
1855// {ASSERT|EXPECT}_??(), but that requires overloading the
1856// comparison operators and is thus discouraged by the Google C++
1857// Usage Guide. Therefore, you are advised to use the
1858// {ASSERT|EXPECT}_TRUE() macro to assert that two objects are
1859// equal.
1860//
1861// 2. The {ASSERT|EXPECT}_??() macros do pointer comparisons on
1862// pointers (in particular, C strings). Therefore, if you use it
1863// with two C strings, you are testing how their locations in memory
1864// are related, not how their content is related. To compare two C
1865// strings by content, use {ASSERT|EXPECT}_STR*().
1866//
1867// 3. {ASSERT|EXPECT}_EQ(v1, v2) is preferred to
1868// {ASSERT|EXPECT}_TRUE(v1 == v2), as the former tells you
1869// what the actual value is when it fails, and similarly for the
1870// other comparisons.
1871//
1872// 4. Do not depend on the order in which {ASSERT|EXPECT}_??()
1873// evaluate their arguments, which is undefined.
1874//
1875// 5. These macros evaluate their arguments exactly once.
1876//
1877// Examples:
1878//
1879// EXPECT_NE(Foo(), 5);
1880// EXPECT_EQ(a_pointer, NULL);
1881// ASSERT_LT(i, array_size);
1882// ASSERT_GT(records.size(), 0) << "There is no record left.";
1883
1884#define EXPECT_EQ(val1, val2) \
1885 EXPECT_PRED_FORMAT2(::testing::internal::EqHelper::Compare, val1, val2)
1886#define EXPECT_NE(val1, val2) \
1887 EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperNE, val1, val2)
1888#define EXPECT_LE(val1, val2) \
1889 EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperLE, val1, val2)
1890#define EXPECT_LT(val1, val2) \
1891 EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperLT, val1, val2)
1892#define EXPECT_GE(val1, val2) \
1893 EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperGE, val1, val2)
1894#define EXPECT_GT(val1, val2) \
1895 EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperGT, val1, val2)
1896
1897#define GTEST_ASSERT_EQ(val1, val2) \
1898 ASSERT_PRED_FORMAT2(::testing::internal::EqHelper::Compare, val1, val2)
1899#define GTEST_ASSERT_NE(val1, val2) \
1900 ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperNE, val1, val2)
1901#define GTEST_ASSERT_LE(val1, val2) \
1902 ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperLE, val1, val2)
1903#define GTEST_ASSERT_LT(val1, val2) \
1904 ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperLT, val1, val2)
1905#define GTEST_ASSERT_GE(val1, val2) \
1906 ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperGE, val1, val2)
1907#define GTEST_ASSERT_GT(val1, val2) \
1908 ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperGT, val1, val2)
1909
1910// Define macro GTEST_DONT_DEFINE_ASSERT_XY to 1 to omit the definition of
1911// ASSERT_XY(), which clashes with some users' own code.
1912
1913#if !(defined(GTEST_DONT_DEFINE_ASSERT_EQ) && GTEST_DONT_DEFINE_ASSERT_EQ)
1914#define ASSERT_EQ(val1, val2) GTEST_ASSERT_EQ(val1, val2)
1915#endif
1916
1917#if !(defined(GTEST_DONT_DEFINE_ASSERT_NE) && GTEST_DONT_DEFINE_ASSERT_NE)
1918#define ASSERT_NE(val1, val2) GTEST_ASSERT_NE(val1, val2)
1919#endif
1920
1921#if !(defined(GTEST_DONT_DEFINE_ASSERT_LE) && GTEST_DONT_DEFINE_ASSERT_LE)
1922#define ASSERT_LE(val1, val2) GTEST_ASSERT_LE(val1, val2)
1923#endif
1924
1925#if !(defined(GTEST_DONT_DEFINE_ASSERT_LT) && GTEST_DONT_DEFINE_ASSERT_LT)
1926#define ASSERT_LT(val1, val2) GTEST_ASSERT_LT(val1, val2)
1927#endif
1928
1929#if !(defined(GTEST_DONT_DEFINE_ASSERT_GE) && GTEST_DONT_DEFINE_ASSERT_GE)
1930#define ASSERT_GE(val1, val2) GTEST_ASSERT_GE(val1, val2)
1931#endif
1932
1933#if !(defined(GTEST_DONT_DEFINE_ASSERT_GT) && GTEST_DONT_DEFINE_ASSERT_GT)
1934#define ASSERT_GT(val1, val2) GTEST_ASSERT_GT(val1, val2)
1935#endif
1936
1937// C-string Comparisons. All tests treat NULL and any non-NULL string
1938// as different. Two NULLs are equal.
1939//
1940// * {ASSERT|EXPECT}_STREQ(s1, s2): Tests that s1 == s2
1941// * {ASSERT|EXPECT}_STRNE(s1, s2): Tests that s1 != s2
1942// * {ASSERT|EXPECT}_STRCASEEQ(s1, s2): Tests that s1 == s2, ignoring case
1943// * {ASSERT|EXPECT}_STRCASENE(s1, s2): Tests that s1 != s2, ignoring case
1944//
1945// For wide or narrow string objects, you can use the
1946// {ASSERT|EXPECT}_??() macros.
1947//
1948// Don't depend on the order in which the arguments are evaluated,
1949// which is undefined.
1950//
1951// These macros evaluate their arguments exactly once.
1952
1953#define EXPECT_STREQ(s1, s2) \
1954 EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperSTREQ, s1, s2)
1955#define EXPECT_STRNE(s1, s2) \
1956 EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperSTRNE, s1, s2)
1957#define EXPECT_STRCASEEQ(s1, s2) \
1958 EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperSTRCASEEQ, s1, s2)
1959#define EXPECT_STRCASENE(s1, s2) \
1960 EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperSTRCASENE, s1, s2)
1961
1962#define ASSERT_STREQ(s1, s2) \
1963 ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperSTREQ, s1, s2)
1964#define ASSERT_STRNE(s1, s2) \
1965 ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperSTRNE, s1, s2)
1966#define ASSERT_STRCASEEQ(s1, s2) \
1967 ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperSTRCASEEQ, s1, s2)
1968#define ASSERT_STRCASENE(s1, s2) \
1969 ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperSTRCASENE, s1, s2)
1970
1971// Macros for comparing floating-point numbers.
1972//
1973// * {ASSERT|EXPECT}_FLOAT_EQ(val1, val2):
1974// Tests that two float values are almost equal.
1975// * {ASSERT|EXPECT}_DOUBLE_EQ(val1, val2):
1976// Tests that two double values are almost equal.
1977// * {ASSERT|EXPECT}_NEAR(v1, v2, abs_error):
1978// Tests that v1 and v2 are within the given distance to each other.
1979//
1980// Google Test uses ULP-based comparison to automatically pick a default
1981// error bound that is appropriate for the operands. See the
1982// FloatingPoint template class in gtest-internal.h if you are
1983// interested in the implementation details.
1984
1985#define EXPECT_FLOAT_EQ(val1, val2) \
1986 EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperFloatingPointEQ<float>, \
1987 val1, val2)
1988
1989#define EXPECT_DOUBLE_EQ(val1, val2) \
1990 EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperFloatingPointEQ<double>, \
1991 val1, val2)
1992
1993#define ASSERT_FLOAT_EQ(val1, val2) \
1994 ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperFloatingPointEQ<float>, \
1995 val1, val2)
1996
1997#define ASSERT_DOUBLE_EQ(val1, val2) \
1998 ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperFloatingPointEQ<double>, \
1999 val1, val2)
2000
2001#define EXPECT_NEAR(val1, val2, abs_error) \
2002 EXPECT_PRED_FORMAT3(::testing::internal::DoubleNearPredFormat, val1, val2, \
2003 abs_error)
2004
2005#define ASSERT_NEAR(val1, val2, abs_error) \
2006 ASSERT_PRED_FORMAT3(::testing::internal::DoubleNearPredFormat, val1, val2, \
2007 abs_error)
2008
2009// These predicate format functions work on floating-point values, and
2010// can be used in {ASSERT|EXPECT}_PRED_FORMAT2*(), e.g.
2011//
2012// EXPECT_PRED_FORMAT2(testing::DoubleLE, Foo(), 5.0);
2013
2014// Asserts that val1 is less than, or almost equal to, val2. Fails
2015// otherwise. In particular, it fails if either val1 or val2 is NaN.
2016GTEST_API_ AssertionResult FloatLE(const char* expr1, const char* expr2,
2017 float val1, float val2);
2018GTEST_API_ AssertionResult DoubleLE(const char* expr1, const char* expr2,
2019 double val1, double val2);
2020
2021#ifdef GTEST_OS_WINDOWS
2022
2023// Macros that test for HRESULT failure and success, these are only useful
2024// on Windows, and rely on Windows SDK macros and APIs to compile.
2025//
2026// * {ASSERT|EXPECT}_HRESULT_{SUCCEEDED|FAILED}(expr)
2027//
2028// When expr unexpectedly fails or succeeds, Google Test prints the
2029// expected result and the actual result with both a human-readable
2030// string representation of the error, if available, as well as the
2031// hex result code.
2032#define EXPECT_HRESULT_SUCCEEDED(expr) \
2033 EXPECT_PRED_FORMAT1(::testing::internal::IsHRESULTSuccess, (expr))
2034
2035#define ASSERT_HRESULT_SUCCEEDED(expr) \
2036 ASSERT_PRED_FORMAT1(::testing::internal::IsHRESULTSuccess, (expr))
2037
2038#define EXPECT_HRESULT_FAILED(expr) \
2039 EXPECT_PRED_FORMAT1(::testing::internal::IsHRESULTFailure, (expr))
2040
2041#define ASSERT_HRESULT_FAILED(expr) \
2042 ASSERT_PRED_FORMAT1(::testing::internal::IsHRESULTFailure, (expr))
2043
2044#endif // GTEST_OS_WINDOWS
2045
2046// Macros that execute statement and check that it doesn't generate new fatal
2047// failures in the current thread.
2048//
2049// * {ASSERT|EXPECT}_NO_FATAL_FAILURE(statement);
2050//
2051// Examples:
2052//
2053// EXPECT_NO_FATAL_FAILURE(Process());
2054// ASSERT_NO_FATAL_FAILURE(Process()) << "Process() failed";
2055//
2056#define ASSERT_NO_FATAL_FAILURE(statement) \
2057 GTEST_TEST_NO_FATAL_FAILURE_(statement, GTEST_FATAL_FAILURE_)
2058#define EXPECT_NO_FATAL_FAILURE(statement) \
2059 GTEST_TEST_NO_FATAL_FAILURE_(statement, GTEST_NONFATAL_FAILURE_)
2060
2061// Causes a trace (including the given source file path and line number,
2062// and the given message) to be included in every test failure message generated
2063// by code in the scope of the lifetime of an instance of this class. The effect
2064// is undone with the destruction of the instance.
2065//
2066// The message argument can be anything streamable to std::ostream.
2067//
2068// Example:
2069// testing::ScopedTrace trace("file.cc", 123, "message");
2070//
2071class GTEST_API_ ScopedTrace {
2072 public:
2073 // The c'tor pushes the given source file location and message onto
2074 // a trace stack maintained by Google Test.
2075
2076 // Template version. Uses Message() to convert the values into strings.
2077 // Slow, but flexible.
2078 template <typename T>
2079 ScopedTrace(const char* file, int line, const T& message) {
2080 PushTrace(file, line, message: (Message() << message).GetString());
2081 }
2082
2083 // Optimize for some known types.
2084 ScopedTrace(const char* file, int line, const char* message) {
2085 PushTrace(file, line, message: message ? message : "(null)");
2086 }
2087
2088 ScopedTrace(const char* file, int line, const std::string& message) {
2089 PushTrace(file, line, message);
2090 }
2091
2092 // The d'tor pops the info pushed by the c'tor.
2093 //
2094 // Note that the d'tor is not virtual in order to be efficient.
2095 // Don't inherit from ScopedTrace!
2096 ~ScopedTrace();
2097
2098 private:
2099 void PushTrace(const char* file, int line, std::string message);
2100
2101 ScopedTrace(const ScopedTrace&) = delete;
2102 ScopedTrace& operator=(const ScopedTrace&) = delete;
2103};
2104
2105// Causes a trace (including the source file path, the current line
2106// number, and the given message) to be included in every test failure
2107// message generated by code in the current scope. The effect is
2108// undone when the control leaves the current scope.
2109//
2110// The message argument can be anything streamable to std::ostream.
2111//
2112// In the implementation, we include the current line number as part
2113// of the dummy variable name, thus allowing multiple SCOPED_TRACE()s
2114// to appear in the same block - as long as they are on different
2115// lines.
2116//
2117// Assuming that each thread maintains its own stack of traces.
2118// Therefore, a SCOPED_TRACE() would (correctly) only affect the
2119// assertions in its own thread.
2120#define SCOPED_TRACE(message) \
2121 const ::testing::ScopedTrace GTEST_CONCAT_TOKEN_(gtest_trace_, __LINE__)( \
2122 __FILE__, __LINE__, (message))
2123
2124// Compile-time assertion for type equality.
2125// StaticAssertTypeEq<type1, type2>() compiles if and only if type1 and type2
2126// are the same type. The value it returns is not interesting.
2127//
2128// Instead of making StaticAssertTypeEq a class template, we make it a
2129// function template that invokes a helper class template. This
2130// prevents a user from misusing StaticAssertTypeEq<T1, T2> by
2131// defining objects of that type.
2132//
2133// CAVEAT:
2134//
2135// When used inside a method of a class template,
2136// StaticAssertTypeEq<T1, T2>() is effective ONLY IF the method is
2137// instantiated. For example, given:
2138//
2139// template <typename T> class Foo {
2140// public:
2141// void Bar() { testing::StaticAssertTypeEq<int, T>(); }
2142// };
2143//
2144// the code:
2145//
2146// void Test1() { Foo<bool> foo; }
2147//
2148// will NOT generate a compiler error, as Foo<bool>::Bar() is never
2149// actually instantiated. Instead, you need:
2150//
2151// void Test2() { Foo<bool> foo; foo.Bar(); }
2152//
2153// to cause a compiler error.
2154template <typename T1, typename T2>
2155constexpr bool StaticAssertTypeEq() noexcept {
2156 static_assert(std::is_same<T1, T2>::value, "T1 and T2 are not the same type");
2157 return true;
2158}
2159
2160// Defines a test.
2161//
2162// The first parameter is the name of the test suite, and the second
2163// parameter is the name of the test within the test suite.
2164//
2165// The convention is to end the test suite name with "Test". For
2166// example, a test suite for the Foo class can be named FooTest.
2167//
2168// Test code should appear between braces after an invocation of
2169// this macro. Example:
2170//
2171// TEST(FooTest, InitializesCorrectly) {
2172// Foo foo;
2173// EXPECT_TRUE(foo.StatusIsOK());
2174// }
2175
2176// Note that we call GetTestTypeId() instead of GetTypeId<
2177// ::testing::Test>() here to get the type ID of testing::Test. This
2178// is to work around a suspected linker bug when using Google Test as
2179// a framework on Mac OS X. The bug causes GetTypeId<
2180// ::testing::Test>() to return different values depending on whether
2181// the call is from the Google Test framework itself or from user test
2182// code. GetTestTypeId() is guaranteed to always return the same
2183// value, as it always calls GetTypeId<>() from the Google Test
2184// framework.
2185#define GTEST_TEST(test_suite_name, test_name) \
2186 GTEST_TEST_(test_suite_name, test_name, ::testing::Test, \
2187 ::testing::internal::GetTestTypeId())
2188
2189// Define this macro to 1 to omit the definition of TEST(), which
2190// is a generic name and clashes with some other libraries.
2191#if !(defined(GTEST_DONT_DEFINE_TEST) && GTEST_DONT_DEFINE_TEST)
2192#define TEST(test_suite_name, test_name) GTEST_TEST(test_suite_name, test_name)
2193#endif
2194
2195// Defines a test that uses a test fixture.
2196//
2197// The first parameter is the name of the test fixture class, which
2198// also doubles as the test suite name. The second parameter is the
2199// name of the test within the test suite.
2200//
2201// A test fixture class must be declared earlier. The user should put
2202// the test code between braces after using this macro. Example:
2203//
2204// class FooTest : public testing::Test {
2205// protected:
2206// void SetUp() override { b_.AddElement(3); }
2207//
2208// Foo a_;
2209// Foo b_;
2210// };
2211//
2212// TEST_F(FooTest, InitializesCorrectly) {
2213// EXPECT_TRUE(a_.StatusIsOK());
2214// }
2215//
2216// TEST_F(FooTest, ReturnsElementCountCorrectly) {
2217// EXPECT_EQ(a_.size(), 0);
2218// EXPECT_EQ(b_.size(), 1);
2219// }
2220#define GTEST_TEST_F(test_fixture, test_name) \
2221 GTEST_TEST_(test_fixture, test_name, test_fixture, \
2222 ::testing::internal::GetTypeId<test_fixture>())
2223#if !(defined(GTEST_DONT_DEFINE_TEST_F) && GTEST_DONT_DEFINE_TEST_F)
2224#define TEST_F(test_fixture, test_name) GTEST_TEST_F(test_fixture, test_name)
2225#endif
2226
2227// Returns a path to a temporary directory, which should be writable. It is
2228// implementation-dependent whether or not the path is terminated by the
2229// directory-separator character.
2230GTEST_API_ std::string TempDir();
2231
2232// Returns a path to a directory that contains ancillary data files that might
2233// be used by tests. It is implementation dependent whether or not the path is
2234// terminated by the directory-separator character. The directory and the files
2235// in it should be considered read-only.
2236GTEST_API_ std::string SrcDir();
2237
2238GTEST_DISABLE_MSC_WARNINGS_POP_() // 4805 4100
2239
2240// Dynamically registers a test with the framework.
2241//
2242// This is an advanced API only to be used when the `TEST` macros are
2243// insufficient. The macros should be preferred when possible, as they avoid
2244// most of the complexity of calling this function.
2245//
2246// The `factory` argument is a factory callable (move-constructible) object or
2247// function pointer that creates a new instance of the Test object. It
2248// handles ownership to the caller. The signature of the callable is
2249// `Fixture*()`, where `Fixture` is the test fixture class for the test. All
2250// tests registered with the same `test_suite_name` must return the same
2251// fixture type. This is checked at runtime.
2252//
2253// The framework will infer the fixture class from the factory and will call
2254// the `SetUpTestSuite` and `TearDownTestSuite` for it.
2255//
2256// Must be called before `RUN_ALL_TESTS()` is invoked, otherwise behavior is
2257// undefined.
2258//
2259// Use case example:
2260//
2261// class MyFixture : public ::testing::Test {
2262// public:
2263// // All of these optional, just like in regular macro usage.
2264// static void SetUpTestSuite() { ... }
2265// static void TearDownTestSuite() { ... }
2266// void SetUp() override { ... }
2267// void TearDown() override { ... }
2268// };
2269//
2270// class MyTest : public MyFixture {
2271// public:
2272// explicit MyTest(int data) : data_(data) {}
2273// void TestBody() override { ... }
2274//
2275// private:
2276// int data_;
2277// };
2278//
2279// void RegisterMyTests(const std::vector<int>& values) {
2280// for (int v : values) {
2281// ::testing::RegisterTest(
2282// "MyFixture", ("Test" + std::to_string(v)).c_str(), nullptr,
2283// std::to_string(v).c_str(),
2284// __FILE__, __LINE__,
2285// // Important to use the fixture type as the return type here.
2286// [=]() -> MyFixture* { return new MyTest(v); });
2287// }
2288// }
2289// ...
2290// int main(int argc, char** argv) {
2291// ::testing::InitGoogleTest(&argc, argv);
2292// std::vector<int> values_to_test = LoadValuesFromConfig();
2293// RegisterMyTests(values_to_test);
2294// ...
2295// return RUN_ALL_TESTS();
2296// }
2297//
2298template <int&... ExplicitParameterBarrier, typename Factory>
2299TestInfo* RegisterTest(const char* test_suite_name, const char* test_name,
2300 const char* type_param, const char* value_param,
2301 const char* file, int line, Factory factory) {
2302 using TestT = typename std::remove_pointer<decltype(factory())>::type;
2303
2304 class FactoryImpl : public internal::TestFactoryBase {
2305 public:
2306 explicit FactoryImpl(Factory f) : factory_(std::move(f)) {}
2307 Test* CreateTest() override { return factory_(); }
2308
2309 private:
2310 Factory factory_;
2311 };
2312
2313 return internal::MakeAndRegisterTestInfo(
2314 test_suite_name, name: test_name, type_param, value_param,
2315 code_location: internal::CodeLocation(file, line), fixture_class_id: internal::GetTypeId<TestT>(),
2316 set_up_tc: internal::SuiteApiResolver<TestT>::GetSetUpCaseOrSuite(file, line),
2317 tear_down_tc: internal::SuiteApiResolver<TestT>::GetTearDownCaseOrSuite(file, line),
2318 factory: new FactoryImpl{std::move(factory)});
2319}
2320
2321} // namespace testing
2322
2323// Use this function in main() to run all tests. It returns 0 if all
2324// tests are successful, or 1 otherwise.
2325//
2326// RUN_ALL_TESTS() should be invoked after the command line has been
2327// parsed by InitGoogleTest(). RUN_ALL_TESTS will tear down and delete any
2328// installed environments and should only be called once per binary.
2329//
2330// This function was formerly a macro; thus, it is in the global
2331// namespace and has an all-caps name.
2332[[nodiscard]] int RUN_ALL_TESTS();
2333
2334inline int RUN_ALL_TESTS() { return ::testing::UnitTest::GetInstance()->Run(); }
2335
2336GTEST_DISABLE_MSC_WARNINGS_POP_() // 4251
2337
2338#endif // GOOGLETEST_INCLUDE_GTEST_GTEST_H_
2339