1// Copyright 2005, Google Inc. 2// All rights reserved. 3// 4// Redistribution and use in source and binary forms, with or without 5// modification, are permitted provided that the following conditions are 6// met: 7// 8// * Redistributions of source code must retain the above copyright 9// notice, this list of conditions and the following disclaimer. 10// * Redistributions in binary form must reproduce the above 11// copyright notice, this list of conditions and the following disclaimer 12// in the documentation and/or other materials provided with the 13// distribution. 14// * Neither the name of Google Inc. nor the names of its 15// contributors may be used to endorse or promote products derived from 16// this software without specific prior written permission. 17// 18// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29// 30// Author: wan@google.com (Zhanyong Wan) 31// 32// The Google C++ Testing Framework (Google Test) 33// 34// This header file defines the public API for Google Test. It should be 35// included by any test program that uses Google Test. 36// 37// IMPORTANT NOTE: Due to limitation of the C++ language, we have to 38// leave some internal implementation details in this header file. 39// They are clearly marked by comments like this: 40// 41// // INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM. 42// 43// Such code is NOT meant to be used by a user directly, and is subject 44// to CHANGE WITHOUT NOTICE. Therefore DO NOT DEPEND ON IT in a user 45// program! 46// 47// Acknowledgment: Google Test borrowed the idea of automatic test 48// registration from Barthelemy Dagenais' (barthelemy@prologique.com) 49// easyUnit framework. 50 51#ifndef GTEST_INCLUDE_GTEST_GTEST_H_ 52#define GTEST_INCLUDE_GTEST_GTEST_H_ 53 54// The following platform macros are used throughout Google Test: 55// _WIN32_WCE Windows CE (set in project files) 56// 57// Note that even though _MSC_VER and _WIN32_WCE really indicate a compiler 58// and a Win32 implementation, respectively, we use them to indicate the 59// combination of compiler - Win 32 API - C library, since the code currently 60// only supports: 61// Windows proper with Visual C++ and MS C library (_MSC_VER && !_WIN32_WCE) and 62// Windows Mobile with Visual C++ and no C library (_WIN32_WCE). 63 64#include <limits> 65#include <gtest/internal/gtest-internal.h> 66#include <gtest/internal/gtest-string.h> 67#include <gtest/gtest-death-test.h> 68#include <gtest/gtest-message.h> 69#include <gtest/gtest-param-test.h> 70#include <gtest/gtest_prod.h> 71#include <gtest/gtest-test-part.h> 72#include <gtest/gtest-typed-test.h> 73 74// Depending on the platform, different string classes are available. 75// On Windows, ::std::string compiles only when exceptions are 76// enabled. On Linux, in addition to ::std::string, Google also makes 77// use of class ::string, which has the same interface as 78// ::std::string, but has a different implementation. 79// 80// The user can tell us whether ::std::string is available in his 81// environment by defining the macro GTEST_HAS_STD_STRING to either 1 82// or 0 on the compiler command line. He can also define 83// GTEST_HAS_GLOBAL_STRING to 1 to indicate that ::string is available 84// AND is a distinct type to ::std::string, or define it to 0 to 85// indicate otherwise. 86// 87// If the user's ::std::string and ::string are the same class due to 88// aliasing, he should define GTEST_HAS_STD_STRING to 1 and 89// GTEST_HAS_GLOBAL_STRING to 0. 90// 91// If the user doesn't define GTEST_HAS_STD_STRING and/or 92// GTEST_HAS_GLOBAL_STRING, they are defined heuristically. 93 94namespace testing { 95 96// Declares the flags. 97 98// This flag temporary enables the disabled tests. 99GTEST_DECLARE_bool_(also_run_disabled_tests); 100 101// This flag brings the debugger on an assertion failure. 102GTEST_DECLARE_bool_(break_on_failure); 103 104// This flag controls whether Google Test catches all test-thrown exceptions 105// and logs them as failures. 106GTEST_DECLARE_bool_(catch_exceptions); 107 108// This flag enables using colors in terminal output. Available values are 109// "yes" to enable colors, "no" (disable colors), or "auto" (the default) 110// to let Google Test decide. 111GTEST_DECLARE_string_(color); 112 113// This flag sets up the filter to select by name using a glob pattern 114// the tests to run. If the filter is not given all tests are executed. 115GTEST_DECLARE_string_(filter); 116 117// This flag causes the Google Test to list tests. None of the tests listed 118// are actually run if the flag is provided. 119GTEST_DECLARE_bool_(list_tests); 120 121// This flag controls whether Google Test emits a detailed XML report to a file 122// in addition to its normal textual output. 123GTEST_DECLARE_string_(output); 124 125// This flags control whether Google Test prints the elapsed time for each 126// test. 127GTEST_DECLARE_bool_(print_time); 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 includes Google Test internal 134// stack frames in failure stack traces. 135GTEST_DECLARE_bool_(show_internal_stack_frames); 136 137// This flag specifies the maximum number of stack frames to be 138// printed in a failure message. 139GTEST_DECLARE_int32_(stack_trace_depth); 140 141// When this flag is specified, a failed assertion will throw an 142// exception if exceptions are enabled, or exit the program with a 143// non-zero code otherwise. 144GTEST_DECLARE_bool_(throw_on_failure); 145 146// The upper limit for valid stack trace depths. 147const int kMaxStackTraceDepth = 100; 148 149namespace internal { 150 151class GTestFlagSaver; 152 153// Converts a streamable value to a String. A NULL pointer is 154// converted to "(null)". When the input value is a ::string, 155// ::std::string, ::wstring, or ::std::wstring object, each NUL 156// character in it is replaced with "\\0". 157// Declared in gtest-internal.h but defined here, so that it has access 158// to the definition of the Message class, required by the ARM 159// compiler. 160template <typename T> 161String StreamableToString(const T& streamable) { 162 return (Message() << streamable).GetString(); 163} 164 165} // namespace internal 166 167// A class for indicating whether an assertion was successful. When 168// the assertion wasn't successful, the AssertionResult object 169// remembers a non-empty message that described how it failed. 170// 171// This class is useful for defining predicate-format functions to be 172// used with predicate assertions (ASSERT_PRED_FORMAT*, etc). 173// 174// The constructor of AssertionResult is private. To create an 175// instance of this class, use one of the factory functions 176// (AssertionSuccess() and AssertionFailure()). 177// 178// For example, in order to be able to write: 179// 180// // Verifies that Foo() returns an even number. 181// EXPECT_PRED_FORMAT1(IsEven, Foo()); 182// 183// you just need to define: 184// 185// testing::AssertionResult IsEven(const char* expr, int n) { 186// if ((n % 2) == 0) return testing::AssertionSuccess(); 187// 188// Message msg; 189// msg << "Expected: " << expr << " is even\n" 190// << " Actual: it's " << n; 191// return testing::AssertionFailure(msg); 192// } 193// 194// If Foo() returns 5, you will see the following message: 195// 196// Expected: Foo() is even 197// Actual: it's 5 198class AssertionResult { 199 public: 200 // Declares factory functions for making successful and failed 201 // assertion results as friends. 202 friend AssertionResult AssertionSuccess(); 203 friend AssertionResult AssertionFailure(const Message&); 204 205 // Returns true iff the assertion succeeded. 206 operator bool() const { return failure_message_.c_str() == NULL; } // NOLINT 207 208 // Returns the assertion's failure message. 209 const char* failure_message() const { return failure_message_.c_str(); } 210 211 private: 212 // The default constructor. It is used when the assertion succeeded. 213 AssertionResult() {} 214 215 // The constructor used when the assertion failed. 216 explicit AssertionResult(const internal::String& failure_message); 217 218 // Stores the assertion's failure message. 219 internal::String failure_message_; 220}; 221 222// Makes a successful assertion result. 223AssertionResult AssertionSuccess(); 224 225// Makes a failed assertion result with the given failure message. 226AssertionResult AssertionFailure(const Message& msg); 227 228// The abstract class that all tests inherit from. 229// 230// In Google Test, a unit test program contains one or many TestCases, and 231// each TestCase contains one or many Tests. 232// 233// When you define a test using the TEST macro, you don't need to 234// explicitly derive from Test - the TEST macro automatically does 235// this for you. 236// 237// The only time you derive from Test is when defining a test fixture 238// to be used a TEST_F. For example: 239// 240// class FooTest : public testing::Test { 241// protected: 242// virtual void SetUp() { ... } 243// virtual void TearDown() { ... } 244// ... 245// }; 246// 247// TEST_F(FooTest, Bar) { ... } 248// TEST_F(FooTest, Baz) { ... } 249// 250// Test is not copyable. 251class Test { 252 public: 253 friend class internal::TestInfoImpl; 254 255 // Defines types for pointers to functions that set up and tear down 256 // a test case. 257 typedef internal::SetUpTestCaseFunc SetUpTestCaseFunc; 258 typedef internal::TearDownTestCaseFunc TearDownTestCaseFunc; 259 260 // The d'tor is virtual as we intend to inherit from Test. 261 virtual ~Test(); 262 263 // Sets up the stuff shared by all tests in this test case. 264 // 265 // Google Test will call Foo::SetUpTestCase() before running the first 266 // test in test case Foo. Hence a sub-class can define its own 267 // SetUpTestCase() method to shadow the one defined in the super 268 // class. 269 static void SetUpTestCase() {} 270 271 // Tears down the stuff shared by all tests in this test case. 272 // 273 // Google Test will call Foo::TearDownTestCase() after running the last 274 // test in test case Foo. Hence a sub-class can define its own 275 // TearDownTestCase() method to shadow the one defined in the super 276 // class. 277 static void TearDownTestCase() {} 278 279 // Returns true iff the current test has a fatal failure. 280 static bool HasFatalFailure(); 281 282 // Logs a property for the current test. Only the last value for a given 283 // key is remembered. 284 // These are public static so they can be called from utility functions 285 // that are not members of the test fixture. 286 // The arguments are const char* instead strings, as Google Test is used 287 // on platforms where string doesn't compile. 288 // 289 // Note that a driving consideration for these RecordProperty methods 290 // was to produce xml output suited to the Greenspan charting utility, 291 // which at present will only chart values that fit in a 32-bit int. It 292 // is the user's responsibility to restrict their values to 32-bit ints 293 // if they intend them to be used with Greenspan. 294 static void RecordProperty(const char* key, const char* value); 295 static void RecordProperty(const char* key, int value); 296 297 protected: 298 // Creates a Test object. 299 Test(); 300 301 // Sets up the test fixture. 302 virtual void SetUp(); 303 304 // Tears down the test fixture. 305 virtual void TearDown(); 306 307 private: 308 // Returns true iff the current test has the same fixture class as 309 // the first test in the current test case. 310 static bool HasSameFixtureClass(); 311 312 // Runs the test after the test fixture has been set up. 313 // 314 // A sub-class must implement this to define the test logic. 315 // 316 // DO NOT OVERRIDE THIS FUNCTION DIRECTLY IN A USER PROGRAM. 317 // Instead, use the TEST or TEST_F macro. 318 virtual void TestBody() = 0; 319 320 // Sets up, executes, and tears down the test. 321 void Run(); 322 323 // Uses a GTestFlagSaver to save and restore all Google Test flags. 324 const internal::GTestFlagSaver* const gtest_flag_saver_; 325 326 // Often a user mis-spells SetUp() as Setup() and spends a long time 327 // wondering why it is never called by Google Test. The declaration of 328 // the following method is solely for catching such an error at 329 // compile time: 330 // 331 // - The return type is deliberately chosen to be not void, so it 332 // will be a conflict if a user declares void Setup() in his test 333 // fixture. 334 // 335 // - This method is private, so it will be another compiler error 336 // if a user calls it from his test fixture. 337 // 338 // DO NOT OVERRIDE THIS FUNCTION. 339 // 340 // If you see an error about overriding the following function or 341 // about it being private, you have mis-spelled SetUp() as Setup(). 342 struct Setup_should_be_spelled_SetUp {}; 343 virtual Setup_should_be_spelled_SetUp* Setup() { return NULL; } 344 345 // We disallow copying Tests. 346 GTEST_DISALLOW_COPY_AND_ASSIGN_(Test); 347}; 348 349 350// A TestInfo object stores the following information about a test: 351// 352// Test case name 353// Test name 354// Whether the test should be run 355// A function pointer that creates the test object when invoked 356// Test result 357// 358// The constructor of TestInfo registers itself with the UnitTest 359// singleton such that the RUN_ALL_TESTS() macro knows which tests to 360// run. 361class TestInfo { 362 public: 363 // Destructs a TestInfo object. This function is not virtual, so 364 // don't inherit from TestInfo. 365 ~TestInfo(); 366 367 // Returns the test case name. 368 const char* test_case_name() const; 369 370 // Returns the test name. 371 const char* name() const; 372 373 // Returns the test case comment. 374 const char* test_case_comment() const; 375 376 // Returns the test comment. 377 const char* comment() const; 378 379 // Returns true if this test should run. 380 // 381 // Google Test allows the user to filter the tests by their full names. 382 // The full name of a test Bar in test case Foo is defined as 383 // "Foo.Bar". Only the tests that match the filter will run. 384 // 385 // A filter is a colon-separated list of glob (not regex) patterns, 386 // optionally followed by a '-' and a colon-separated list of 387 // negative patterns (tests to exclude). A test is run if it 388 // matches one of the positive patterns and does not match any of 389 // the negative patterns. 390 // 391 // For example, *A*:Foo.* is a filter that matches any string that 392 // contains the character 'A' or starts with "Foo.". 393 bool should_run() const; 394 395 // Returns the result of the test. 396 const internal::TestResult* result() const; 397 private: 398#if GTEST_HAS_DEATH_TEST 399 friend class internal::DefaultDeathTestFactory; 400#endif // GTEST_HAS_DEATH_TEST 401 friend class internal::TestInfoImpl; 402 friend class internal::UnitTestImpl; 403 friend class Test; 404 friend class TestCase; 405 friend TestInfo* internal::MakeAndRegisterTestInfo( 406 const char* test_case_name, const char* name, 407 const char* test_case_comment, const char* comment, 408 internal::TypeId fixture_class_id, 409 Test::SetUpTestCaseFunc set_up_tc, 410 Test::TearDownTestCaseFunc tear_down_tc, 411 internal::TestFactoryBase* factory); 412 413 // Increments the number of death tests encountered in this test so 414 // far. 415 int increment_death_test_count(); 416 417 // Accessors for the implementation object. 418 internal::TestInfoImpl* impl() { return impl_; } 419 const internal::TestInfoImpl* impl() const { return impl_; } 420 421 // Constructs a TestInfo object. The newly constructed instance assumes 422 // ownership of the factory object. 423 TestInfo(const char* test_case_name, const char* name, 424 const char* test_case_comment, const char* comment, 425 internal::TypeId fixture_class_id, 426 internal::TestFactoryBase* factory); 427 428 // An opaque implementation object. 429 internal::TestInfoImpl* impl_; 430 431 GTEST_DISALLOW_COPY_AND_ASSIGN_(TestInfo); 432}; 433 434// An Environment object is capable of setting up and tearing down an 435// environment. The user should subclass this to define his own 436// environment(s). 437// 438// An Environment object does the set-up and tear-down in virtual 439// methods SetUp() and TearDown() instead of the constructor and the 440// destructor, as: 441// 442// 1. You cannot safely throw from a destructor. This is a problem 443// as in some cases Google Test is used where exceptions are enabled, and 444// we may want to implement ASSERT_* using exceptions where they are 445// available. 446// 2. You cannot use ASSERT_* directly in a constructor or 447// destructor. 448class Environment { 449 public: 450 // The d'tor is virtual as we need to subclass Environment. 451 virtual ~Environment() {} 452 453 // Override this to define how to set up the environment. 454 virtual void SetUp() {} 455 456 // Override this to define how to tear down the environment. 457 virtual void TearDown() {} 458 private: 459 // If you see an error about overriding the following function or 460 // about it being private, you have mis-spelled SetUp() as Setup(). 461 struct Setup_should_be_spelled_SetUp {}; 462 virtual Setup_should_be_spelled_SetUp* Setup() { return NULL; } 463}; 464 465// A UnitTest consists of a list of TestCases. 466// 467// This is a singleton class. The only instance of UnitTest is 468// created when UnitTest::GetInstance() is first called. This 469// instance is never deleted. 470// 471// UnitTest is not copyable. 472// 473// This class is thread-safe as long as the methods are called 474// according to their specification. 475class UnitTest { 476 public: 477 // Gets the singleton UnitTest object. The first time this method 478 // is called, a UnitTest object is constructed and returned. 479 // Consecutive calls will return the same object. 480 static UnitTest* GetInstance(); 481 482 // Registers and returns a global test environment. When a test 483 // program is run, all global test environments will be set-up in 484 // the order they were registered. After all tests in the program 485 // have finished, all global test environments will be torn-down in 486 // the *reverse* order they were registered. 487 // 488 // The UnitTest object takes ownership of the given environment. 489 // 490 // This method can only be called from the main thread. 491 Environment* AddEnvironment(Environment* env); 492 493 // Adds a TestPartResult to the current TestResult object. All 494 // Google Test assertion macros (e.g. ASSERT_TRUE, EXPECT_EQ, etc) 495 // eventually call this to report their results. The user code 496 // should use the assertion macros instead of calling this directly. 497 // 498 // INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM. 499 void AddTestPartResult(TestPartResultType result_type, 500 const char* file_name, 501 int line_number, 502 const internal::String& message, 503 const internal::String& os_stack_trace); 504 505 // Adds a TestProperty to the current TestResult object. If the result already 506 // contains a property with the same key, the value will be updated. 507 void RecordPropertyForCurrentTest(const char* key, const char* value); 508 509 // Runs all tests in this UnitTest object and prints the result. 510 // Returns 0 if successful, or 1 otherwise. 511 // 512 // This method can only be called from the main thread. 513 // 514 // INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM. 515 int Run() GTEST_MUST_USE_RESULT_; 516 517 // Returns the working directory when the first TEST() or TEST_F() 518 // was executed. The UnitTest object owns the string. 519 const char* original_working_dir() const; 520 521 // Returns the TestCase object for the test that's currently running, 522 // or NULL if no test is running. 523 const TestCase* current_test_case() const; 524 525 // Returns the TestInfo object for the test that's currently running, 526 // or NULL if no test is running. 527 const TestInfo* current_test_info() const; 528 529#if GTEST_HAS_PARAM_TEST 530 // Returns the ParameterizedTestCaseRegistry object used to keep track of 531 // value-parameterized tests and instantiate and register them. 532 internal::ParameterizedTestCaseRegistry& parameterized_test_registry(); 533#endif // GTEST_HAS_PARAM_TEST 534 535 // Accessors for the implementation object. 536 internal::UnitTestImpl* impl() { return impl_; } 537 const internal::UnitTestImpl* impl() const { return impl_; } 538 private: 539 // ScopedTrace is a friend as it needs to modify the per-thread 540 // trace stack, which is a private member of UnitTest. 541 friend class internal::ScopedTrace; 542 543 // Creates an empty UnitTest. 544 UnitTest(); 545 546 // D'tor 547 virtual ~UnitTest(); 548 549 // Pushes a trace defined by SCOPED_TRACE() on to the per-thread 550 // Google Test trace stack. 551 void PushGTestTrace(const internal::TraceInfo& trace); 552 553 // Pops a trace from the per-thread Google Test trace stack. 554 void PopGTestTrace(); 555 556 // Protects mutable state in *impl_. This is mutable as some const 557 // methods need to lock it too. 558 mutable internal::Mutex mutex_; 559 560 // Opaque implementation object. This field is never changed once 561 // the object is constructed. We don't mark it as const here, as 562 // doing so will cause a warning in the constructor of UnitTest. 563 // Mutable state in *impl_ is protected by mutex_. 564 internal::UnitTestImpl* impl_; 565 566 // We disallow copying UnitTest. 567 GTEST_DISALLOW_COPY_AND_ASSIGN_(UnitTest); 568}; 569 570// A convenient wrapper for adding an environment for the test 571// program. 572// 573// You should call this before RUN_ALL_TESTS() is called, probably in 574// main(). If you use gtest_main, you need to call this before main() 575// starts for it to take effect. For example, you can define a global 576// variable like this: 577// 578// testing::Environment* const foo_env = 579// testing::AddGlobalTestEnvironment(new FooEnvironment); 580// 581// However, we strongly recommend you to write your own main() and 582// call AddGlobalTestEnvironment() there, as relying on initialization 583// of global variables makes the code harder to read and may cause 584// problems when you register multiple environments from different 585// translation units and the environments have dependencies among them 586// (remember that the compiler doesn't guarantee the order in which 587// global variables from different translation units are initialized). 588inline Environment* AddGlobalTestEnvironment(Environment* env) { 589 return UnitTest::GetInstance()->AddEnvironment(env); 590} 591 592// Initializes Google Test. This must be called before calling 593// RUN_ALL_TESTS(). In particular, it parses a command line for the 594// flags that Google Test recognizes. Whenever a Google Test flag is 595// seen, it is removed from argv, and *argc is decremented. 596// 597// No value is returned. Instead, the Google Test flag variables are 598// updated. 599// 600// Calling the function for the second time has no user-visible effect. 601void InitGoogleTest(int* argc, char** argv); 602 603// This overloaded version can be used in Windows programs compiled in 604// UNICODE mode. 605void InitGoogleTest(int* argc, wchar_t** argv); 606 607namespace internal { 608 609// These overloaded versions handle ::std::string and ::std::wstring. 610#if GTEST_HAS_STD_STRING 611inline String FormatForFailureMessage(const ::std::string& str) { 612 return (Message() << '"' << str << '"').GetString(); 613} 614#endif // GTEST_HAS_STD_STRING 615 616#if GTEST_HAS_STD_WSTRING 617inline String FormatForFailureMessage(const ::std::wstring& wstr) { 618 return (Message() << "L\"" << wstr << '"').GetString(); 619} 620#endif // GTEST_HAS_STD_WSTRING 621 622// These overloaded versions handle ::string and ::wstring. 623#if GTEST_HAS_GLOBAL_STRING 624inline String FormatForFailureMessage(const ::string& str) { 625 return (Message() << '"' << str << '"').GetString(); 626} 627#endif // GTEST_HAS_GLOBAL_STRING 628 629#if GTEST_HAS_GLOBAL_WSTRING 630inline String FormatForFailureMessage(const ::wstring& wstr) { 631 return (Message() << "L\"" << wstr << '"').GetString(); 632} 633#endif // GTEST_HAS_GLOBAL_WSTRING 634 635// Formats a comparison assertion (e.g. ASSERT_EQ, EXPECT_LT, and etc) 636// operand to be used in a failure message. The type (but not value) 637// of the other operand may affect the format. This allows us to 638// print a char* as a raw pointer when it is compared against another 639// char*, and print it as a C string when it is compared against an 640// std::string object, for example. 641// 642// The default implementation ignores the type of the other operand. 643// Some specialized versions are used to handle formatting wide or 644// narrow C strings. 645// 646// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM. 647template <typename T1, typename T2> 648String FormatForComparisonFailureMessage(const T1& value, 649 const T2& /* other_operand */) { 650 return FormatForFailureMessage(value); 651} 652 653// The helper function for {ASSERT|EXPECT}_EQ. 654template <typename T1, typename T2> 655AssertionResult CmpHelperEQ(const char* expected_expression, 656 const char* actual_expression, 657 const T1& expected, 658 const T2& actual) { 659#ifdef _MSC_VER 660#pragma warning(push) // Saves the current warning state. 661#pragma warning(disable:4389) // Temporarily disables warning on 662 // signed/unsigned mismatch. 663#endif 664 665 if (expected == actual) { 666 return AssertionSuccess(); 667 } 668 669#ifdef _MSC_VER 670#pragma warning(pop) // Restores the warning state. 671#endif 672 673 return EqFailure(expected_expression, 674 actual_expression, 675 FormatForComparisonFailureMessage(expected, actual), 676 FormatForComparisonFailureMessage(actual, expected), 677 false); 678} 679 680// With this overloaded version, we allow anonymous enums to be used 681// in {ASSERT|EXPECT}_EQ when compiled with gcc 4, as anonymous enums 682// can be implicitly cast to BiggestInt. 683AssertionResult CmpHelperEQ(const char* expected_expression, 684 const char* actual_expression, 685 BiggestInt expected, 686 BiggestInt actual); 687 688// The helper class for {ASSERT|EXPECT}_EQ. The template argument 689// lhs_is_null_literal is true iff the first argument to ASSERT_EQ() 690// is a null pointer literal. The following default implementation is 691// for lhs_is_null_literal being false. 692template <bool lhs_is_null_literal> 693class EqHelper { 694 public: 695 // This templatized version is for the general case. 696 template <typename T1, typename T2> 697 static AssertionResult Compare(const char* expected_expression, 698 const char* actual_expression, 699 const T1& expected, 700 const T2& actual) { 701 return CmpHelperEQ(expected_expression, actual_expression, expected, 702 actual); 703 } 704 705 // With this overloaded version, we allow anonymous enums to be used 706 // in {ASSERT|EXPECT}_EQ when compiled with gcc 4, as anonymous 707 // enums can be implicitly cast to BiggestInt. 708 // 709 // Even though its body looks the same as the above version, we 710 // cannot merge the two, as it will make anonymous enums unhappy. 711 static AssertionResult Compare(const char* expected_expression, 712 const char* actual_expression, 713 BiggestInt expected, 714 BiggestInt actual) { 715 return CmpHelperEQ(expected_expression, actual_expression, expected, 716 actual); 717 } 718}; 719 720// This specialization is used when the first argument to ASSERT_EQ() 721// is a null pointer literal. 722template <> 723class EqHelper<true> { 724 public: 725 // We define two overloaded versions of Compare(). The first 726 // version will be picked when the second argument to ASSERT_EQ() is 727 // NOT a pointer, e.g. ASSERT_EQ(0, AnIntFunction()) or 728 // EXPECT_EQ(false, a_bool). 729 template <typename T1, typename T2> 730 static AssertionResult Compare(const char* expected_expression, 731 const char* actual_expression, 732 const T1& expected, 733 const T2& actual) { 734 return CmpHelperEQ(expected_expression, actual_expression, expected, 735 actual); 736 } 737 738 // This version will be picked when the second argument to 739 // ASSERT_EQ() is a pointer, e.g. ASSERT_EQ(NULL, a_pointer). 740 template <typename T1, typename T2> 741 static AssertionResult Compare(const char* expected_expression, 742 const char* actual_expression, 743 const T1& /* expected */, 744 T2* actual) { 745 // We already know that 'expected' is a null pointer. 746 return CmpHelperEQ(expected_expression, actual_expression, 747 static_cast<T2*>(NULL), actual); 748 } 749}; 750 751// A macro for implementing the helper functions needed to implement 752// ASSERT_?? and EXPECT_??. It is here just to avoid copy-and-paste 753// of similar code. 754// 755// For each templatized helper function, we also define an overloaded 756// version for BiggestInt in order to reduce code bloat and allow 757// anonymous enums to be used with {ASSERT|EXPECT}_?? when compiled 758// with gcc 4. 759// 760// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM. 761#define GTEST_IMPL_CMP_HELPER_(op_name, op)\ 762template <typename T1, typename T2>\ 763AssertionResult CmpHelper##op_name(const char* expr1, const char* expr2, \ 764 const T1& val1, const T2& val2) {\ 765 if (val1 op val2) {\ 766 return AssertionSuccess();\ 767 } else {\ 768 Message msg;\ 769 msg << "Expected: (" << expr1 << ") " #op " (" << expr2\ 770 << "), actual: " << FormatForComparisonFailureMessage(val1, val2)\ 771 << " vs " << FormatForComparisonFailureMessage(val2, val1);\ 772 return AssertionFailure(msg);\ 773 }\ 774}\ 775AssertionResult CmpHelper##op_name(const char* expr1, const char* expr2, \ 776 BiggestInt val1, BiggestInt val2); 777 778// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM. 779 780// Implements the helper function for {ASSERT|EXPECT}_NE 781GTEST_IMPL_CMP_HELPER_(NE, !=) 782// Implements the helper function for {ASSERT|EXPECT}_LE 783GTEST_IMPL_CMP_HELPER_(LE, <=) 784// Implements the helper function for {ASSERT|EXPECT}_LT 785GTEST_IMPL_CMP_HELPER_(LT, < ) 786// Implements the helper function for {ASSERT|EXPECT}_GE 787GTEST_IMPL_CMP_HELPER_(GE, >=) 788// Implements the helper function for {ASSERT|EXPECT}_GT 789GTEST_IMPL_CMP_HELPER_(GT, > ) 790 791#undef GTEST_IMPL_CMP_HELPER_ 792 793// The helper function for {ASSERT|EXPECT}_STREQ. 794// 795// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM. 796AssertionResult CmpHelperSTREQ(const char* expected_expression, 797 const char* actual_expression, 798 const char* expected, 799 const char* actual); 800 801// The helper function for {ASSERT|EXPECT}_STRCASEEQ. 802// 803// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM. 804AssertionResult CmpHelperSTRCASEEQ(const char* expected_expression, 805 const char* actual_expression, 806 const char* expected, 807 const char* actual); 808 809// The helper function for {ASSERT|EXPECT}_STRNE. 810// 811// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM. 812AssertionResult CmpHelperSTRNE(const char* s1_expression, 813 const char* s2_expression, 814 const char* s1, 815 const char* s2); 816 817// The helper function for {ASSERT|EXPECT}_STRCASENE. 818// 819// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM. 820AssertionResult CmpHelperSTRCASENE(const char* s1_expression, 821 const char* s2_expression, 822 const char* s1, 823 const char* s2); 824 825 826// Helper function for *_STREQ on wide strings. 827// 828// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM. 829AssertionResult CmpHelperSTREQ(const char* expected_expression, 830 const char* actual_expression, 831 const wchar_t* expected, 832 const wchar_t* actual); 833 834// Helper function for *_STRNE on wide strings. 835// 836// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM. 837AssertionResult CmpHelperSTRNE(const char* s1_expression, 838 const char* s2_expression, 839 const wchar_t* s1, 840 const wchar_t* s2); 841 842} // namespace internal 843 844// IsSubstring() and IsNotSubstring() are intended to be used as the 845// first argument to {EXPECT,ASSERT}_PRED_FORMAT2(), not by 846// themselves. They check whether needle is a substring of haystack 847// (NULL is considered a substring of itself only), and return an 848// appropriate error message when they fail. 849// 850// The {needle,haystack}_expr arguments are the stringified 851// expressions that generated the two real arguments. 852AssertionResult IsSubstring( 853 const char* needle_expr, const char* haystack_expr, 854 const char* needle, const char* haystack); 855AssertionResult IsSubstring( 856 const char* needle_expr, const char* haystack_expr, 857 const wchar_t* needle, const wchar_t* haystack); 858AssertionResult IsNotSubstring( 859 const char* needle_expr, const char* haystack_expr, 860 const char* needle, const char* haystack); 861AssertionResult IsNotSubstring( 862 const char* needle_expr, const char* haystack_expr, 863 const wchar_t* needle, const wchar_t* haystack); 864#if GTEST_HAS_STD_STRING 865AssertionResult IsSubstring( 866 const char* needle_expr, const char* haystack_expr, 867 const ::std::string& needle, const ::std::string& haystack); 868AssertionResult IsNotSubstring( 869 const char* needle_expr, const char* haystack_expr, 870 const ::std::string& needle, const ::std::string& haystack); 871#endif // GTEST_HAS_STD_STRING 872 873#if GTEST_HAS_STD_WSTRING 874AssertionResult IsSubstring( 875 const char* needle_expr, const char* haystack_expr, 876 const ::std::wstring& needle, const ::std::wstring& haystack); 877AssertionResult IsNotSubstring( 878 const char* needle_expr, const char* haystack_expr, 879 const ::std::wstring& needle, const ::std::wstring& haystack); 880#endif // GTEST_HAS_STD_WSTRING 881 882namespace internal { 883 884// Helper template function for comparing floating-points. 885// 886// Template parameter: 887// 888// RawType: the raw floating-point type (either float or double) 889// 890// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM. 891template <typename RawType> 892AssertionResult CmpHelperFloatingPointEQ(const char* expected_expression, 893 const char* actual_expression, 894 RawType expected, 895 RawType actual) { 896 const FloatingPoint<RawType> lhs(expected), rhs(actual); 897 898 if (lhs.AlmostEquals(rhs)) { 899 return AssertionSuccess(); 900 } 901 902 StrStream expected_ss; 903 expected_ss << std::setprecision(std::numeric_limits<RawType>::digits10 + 2) 904 << expected; 905 906 StrStream actual_ss; 907 actual_ss << std::setprecision(std::numeric_limits<RawType>::digits10 + 2) 908 << actual; 909 910 return EqFailure(expected_expression, 911 actual_expression, 912 StrStreamToString(&expected_ss), 913 StrStreamToString(&actual_ss), 914 false); 915} 916 917// Helper function for implementing ASSERT_NEAR. 918// 919// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM. 920AssertionResult DoubleNearPredFormat(const char* expr1, 921 const char* expr2, 922 const char* abs_error_expr, 923 double val1, 924 double val2, 925 double abs_error); 926 927// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE. 928// A class that enables one to stream messages to assertion macros 929class AssertHelper { 930 public: 931 // Constructor. 932 AssertHelper(TestPartResultType type, const char* file, int line, 933 const char* message); 934 // Message assignment is a semantic trick to enable assertion 935 // streaming; see the GTEST_MESSAGE_ macro below. 936 void operator=(const Message& message) const; 937 private: 938 TestPartResultType const type_; 939 const char* const file_; 940 int const line_; 941 String const message_; 942 943 GTEST_DISALLOW_COPY_AND_ASSIGN_(AssertHelper); 944}; 945 946} // namespace internal 947 948#if GTEST_HAS_PARAM_TEST 949// The abstract base class that all value-parameterized tests inherit from. 950// 951// This class adds support for accessing the test parameter value via 952// the GetParam() method. 953// 954// Use it with one of the parameter generator defining functions, like Range(), 955// Values(), ValuesIn(), Bool(), and Combine(). 956// 957// class FooTest : public ::testing::TestWithParam<int> { 958// protected: 959// FooTest() { 960// // Can use GetParam() here. 961// } 962// virtual ~FooTest() { 963// // Can use GetParam() here. 964// } 965// virtual void SetUp() { 966// // Can use GetParam() here. 967// } 968// virtual void TearDown { 969// // Can use GetParam() here. 970// } 971// }; 972// TEST_P(FooTest, DoesBar) { 973// // Can use GetParam() method here. 974// Foo foo; 975// ASSERT_TRUE(foo.DoesBar(GetParam())); 976// } 977// INSTANTIATE_TEST_CASE_P(OneToTenRange, FooTest, ::testing::Range(1, 10)); 978 979template <typename T> 980class TestWithParam : public Test { 981 public: 982 typedef T ParamType; 983 984 // The current parameter value. Is also available in the test fixture's 985 // constructor. 986 const ParamType& GetParam() const { return *parameter_; } 987 988 private: 989 // Sets parameter value. The caller is responsible for making sure the value 990 // remains alive and unchanged throughout the current test. 991 static void SetParam(const ParamType* parameter) { 992 parameter_ = parameter; 993 } 994 995 // Static value used for accessing parameter during a test lifetime. 996 static const ParamType* parameter_; 997 998 // TestClass must be a subclass of TestWithParam<T>. 999 template <class TestClass> friend class internal::ParameterizedTestFactory; 1000}; 1001 1002template <typename T> 1003const T* TestWithParam<T>::parameter_ = NULL; 1004 1005#endif // GTEST_HAS_PARAM_TEST 1006 1007// Macros for indicating success/failure in test code. 1008 1009// ADD_FAILURE unconditionally adds a failure to the current test. 1010// SUCCEED generates a success - it doesn't automatically make the 1011// current test successful, as a test is only successful when it has 1012// no failure. 1013// 1014// EXPECT_* verifies that a certain condition is satisfied. If not, 1015// it behaves like ADD_FAILURE. In particular: 1016// 1017// EXPECT_TRUE verifies that a Boolean condition is true. 1018// EXPECT_FALSE verifies that a Boolean condition is false. 1019// 1020// FAIL and ASSERT_* are similar to ADD_FAILURE and EXPECT_*, except 1021// that they will also abort the current function on failure. People 1022// usually want the fail-fast behavior of FAIL and ASSERT_*, but those 1023// writing data-driven tests often find themselves using ADD_FAILURE 1024// and EXPECT_* more. 1025// 1026// Examples: 1027// 1028// EXPECT_TRUE(server.StatusIsOK()); 1029// ASSERT_FALSE(server.HasPendingRequest(port)) 1030// << "There are still pending requests " << "on port " << port; 1031 1032// Generates a nonfatal failure with a generic message. 1033#define ADD_FAILURE() GTEST_NONFATAL_FAILURE_("Failed") 1034 1035// Generates a fatal failure with a generic message. 1036#define FAIL() GTEST_FATAL_FAILURE_("Failed") 1037 1038// Generates a success with a generic message. 1039#define SUCCEED() GTEST_SUCCESS_("Succeeded") 1040 1041// Macros for testing exceptions. 1042// 1043// * {ASSERT|EXPECT}_THROW(statement, expected_exception): 1044// Tests that the statement throws the expected exception. 1045// * {ASSERT|EXPECT}_NO_THROW(statement): 1046// Tests that the statement doesn't throw any exception. 1047// * {ASSERT|EXPECT}_ANY_THROW(statement): 1048// Tests that the statement throws an exception. 1049 1050#define EXPECT_THROW(statement, expected_exception) \ 1051 GTEST_TEST_THROW_(statement, expected_exception, GTEST_NONFATAL_FAILURE_) 1052#define EXPECT_NO_THROW(statement) \ 1053 GTEST_TEST_NO_THROW_(statement, GTEST_NONFATAL_FAILURE_) 1054#define EXPECT_ANY_THROW(statement) \ 1055 GTEST_TEST_ANY_THROW_(statement, GTEST_NONFATAL_FAILURE_) 1056#define ASSERT_THROW(statement, expected_exception) \ 1057 GTEST_TEST_THROW_(statement, expected_exception, GTEST_FATAL_FAILURE_) 1058#define ASSERT_NO_THROW(statement) \ 1059 GTEST_TEST_NO_THROW_(statement, GTEST_FATAL_FAILURE_) 1060#define ASSERT_ANY_THROW(statement) \ 1061 GTEST_TEST_ANY_THROW_(statement, GTEST_FATAL_FAILURE_) 1062 1063// Boolean assertions. 1064#define EXPECT_TRUE(condition) \ 1065 GTEST_TEST_BOOLEAN_(condition, #condition, false, true, \ 1066 GTEST_NONFATAL_FAILURE_) 1067#define EXPECT_FALSE(condition) \ 1068 GTEST_TEST_BOOLEAN_(!(condition), #condition, true, false, \ 1069 GTEST_NONFATAL_FAILURE_) 1070#define ASSERT_TRUE(condition) \ 1071 GTEST_TEST_BOOLEAN_(condition, #condition, false, true, \ 1072 GTEST_FATAL_FAILURE_) 1073#define ASSERT_FALSE(condition) \ 1074 GTEST_TEST_BOOLEAN_(!(condition), #condition, true, false, \ 1075 GTEST_FATAL_FAILURE_) 1076 1077// Includes the auto-generated header that implements a family of 1078// generic predicate assertion macros. 1079#include <gtest/gtest_pred_impl.h> 1080 1081// Macros for testing equalities and inequalities. 1082// 1083// * {ASSERT|EXPECT}_EQ(expected, actual): Tests that expected == actual 1084// * {ASSERT|EXPECT}_NE(v1, v2): Tests that v1 != v2 1085// * {ASSERT|EXPECT}_LT(v1, v2): Tests that v1 < v2 1086// * {ASSERT|EXPECT}_LE(v1, v2): Tests that v1 <= v2 1087// * {ASSERT|EXPECT}_GT(v1, v2): Tests that v1 > v2 1088// * {ASSERT|EXPECT}_GE(v1, v2): Tests that v1 >= v2 1089// 1090// When they are not, Google Test prints both the tested expressions and 1091// their actual values. The values must be compatible built-in types, 1092// or you will get a compiler error. By "compatible" we mean that the 1093// values can be compared by the respective operator. 1094// 1095// Note: 1096// 1097// 1. It is possible to make a user-defined type work with 1098// {ASSERT|EXPECT}_??(), but that requires overloading the 1099// comparison operators and is thus discouraged by the Google C++ 1100// Usage Guide. Therefore, you are advised to use the 1101// {ASSERT|EXPECT}_TRUE() macro to assert that two objects are 1102// equal. 1103// 1104// 2. The {ASSERT|EXPECT}_??() macros do pointer comparisons on 1105// pointers (in particular, C strings). Therefore, if you use it 1106// with two C strings, you are testing how their locations in memory 1107// are related, not how their content is related. To compare two C 1108// strings by content, use {ASSERT|EXPECT}_STR*(). 1109// 1110// 3. {ASSERT|EXPECT}_EQ(expected, actual) is preferred to 1111// {ASSERT|EXPECT}_TRUE(expected == actual), as the former tells you 1112// what the actual value is when it fails, and similarly for the 1113// other comparisons. 1114// 1115// 4. Do not depend on the order in which {ASSERT|EXPECT}_??() 1116// evaluate their arguments, which is undefined. 1117// 1118// 5. These macros evaluate their arguments exactly once. 1119// 1120// Examples: 1121// 1122// EXPECT_NE(5, Foo()); 1123// EXPECT_EQ(NULL, a_pointer); 1124// ASSERT_LT(i, array_size); 1125// ASSERT_GT(records.size(), 0) << "There is no record left."; 1126 1127#define EXPECT_EQ(expected, actual) \ 1128 EXPECT_PRED_FORMAT2(::testing::internal:: \ 1129 EqHelper<GTEST_IS_NULL_LITERAL_(expected)>::Compare, \ 1130 expected, actual) 1131#define EXPECT_NE(expected, actual) \ 1132 EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperNE, expected, actual) 1133#define EXPECT_LE(val1, val2) \ 1134 EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperLE, val1, val2) 1135#define EXPECT_LT(val1, val2) \ 1136 EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperLT, val1, val2) 1137#define EXPECT_GE(val1, val2) \ 1138 EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperGE, val1, val2) 1139#define EXPECT_GT(val1, val2) \ 1140 EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperGT, val1, val2) 1141 1142#define ASSERT_EQ(expected, actual) \ 1143 ASSERT_PRED_FORMAT2(::testing::internal:: \ 1144 EqHelper<GTEST_IS_NULL_LITERAL_(expected)>::Compare, \ 1145 expected, actual) 1146#define ASSERT_NE(val1, val2) \ 1147 ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperNE, val1, val2) 1148#define ASSERT_LE(val1, val2) \ 1149 ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperLE, val1, val2) 1150#define ASSERT_LT(val1, val2) \ 1151 ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperLT, val1, val2) 1152#define ASSERT_GE(val1, val2) \ 1153 ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperGE, val1, val2) 1154#define ASSERT_GT(val1, val2) \ 1155 ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperGT, val1, val2) 1156 1157// C String Comparisons. All tests treat NULL and any non-NULL string 1158// as different. Two NULLs are equal. 1159// 1160// * {ASSERT|EXPECT}_STREQ(s1, s2): Tests that s1 == s2 1161// * {ASSERT|EXPECT}_STRNE(s1, s2): Tests that s1 != s2 1162// * {ASSERT|EXPECT}_STRCASEEQ(s1, s2): Tests that s1 == s2, ignoring case 1163// * {ASSERT|EXPECT}_STRCASENE(s1, s2): Tests that s1 != s2, ignoring case 1164// 1165// For wide or narrow string objects, you can use the 1166// {ASSERT|EXPECT}_??() macros. 1167// 1168// Don't depend on the order in which the arguments are evaluated, 1169// which is undefined. 1170// 1171// These macros evaluate their arguments exactly once. 1172 1173#define EXPECT_STREQ(expected, actual) \ 1174 EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperSTREQ, expected, actual) 1175#define EXPECT_STRNE(s1, s2) \ 1176 EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperSTRNE, s1, s2) 1177#define EXPECT_STRCASEEQ(expected, actual) \ 1178 EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperSTRCASEEQ, expected, actual) 1179#define EXPECT_STRCASENE(s1, s2)\ 1180 EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperSTRCASENE, s1, s2) 1181 1182#define ASSERT_STREQ(expected, actual) \ 1183 ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperSTREQ, expected, actual) 1184#define ASSERT_STRNE(s1, s2) \ 1185 ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperSTRNE, s1, s2) 1186#define ASSERT_STRCASEEQ(expected, actual) \ 1187 ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperSTRCASEEQ, expected, actual) 1188#define ASSERT_STRCASENE(s1, s2)\ 1189 ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperSTRCASENE, s1, s2) 1190 1191// Macros for comparing floating-point numbers. 1192// 1193// * {ASSERT|EXPECT}_FLOAT_EQ(expected, actual): 1194// Tests that two float values are almost equal. 1195// * {ASSERT|EXPECT}_DOUBLE_EQ(expected, actual): 1196// Tests that two double values are almost equal. 1197// * {ASSERT|EXPECT}_NEAR(v1, v2, abs_error): 1198// Tests that v1 and v2 are within the given distance to each other. 1199// 1200// Google Test uses ULP-based comparison to automatically pick a default 1201// error bound that is appropriate for the operands. See the 1202// FloatingPoint template class in gtest-internal.h if you are 1203// interested in the implementation details. 1204 1205#define EXPECT_FLOAT_EQ(expected, actual)\ 1206 EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperFloatingPointEQ<float>, \ 1207 expected, actual) 1208 1209#define EXPECT_DOUBLE_EQ(expected, actual)\ 1210 EXPECT_PRED_FORMAT2(::testing::internal::CmpHelperFloatingPointEQ<double>, \ 1211 expected, actual) 1212 1213#define ASSERT_FLOAT_EQ(expected, actual)\ 1214 ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperFloatingPointEQ<float>, \ 1215 expected, actual) 1216 1217#define ASSERT_DOUBLE_EQ(expected, actual)\ 1218 ASSERT_PRED_FORMAT2(::testing::internal::CmpHelperFloatingPointEQ<double>, \ 1219 expected, actual) 1220 1221#define EXPECT_NEAR(val1, val2, abs_error)\ 1222 EXPECT_PRED_FORMAT3(::testing::internal::DoubleNearPredFormat, \ 1223 val1, val2, abs_error) 1224 1225#define ASSERT_NEAR(val1, val2, abs_error)\ 1226 ASSERT_PRED_FORMAT3(::testing::internal::DoubleNearPredFormat, \ 1227 val1, val2, abs_error) 1228 1229// These predicate format functions work on floating-point values, and 1230// can be used in {ASSERT|EXPECT}_PRED_FORMAT2*(), e.g. 1231// 1232// EXPECT_PRED_FORMAT2(testing::DoubleLE, Foo(), 5.0); 1233 1234// Asserts that val1 is less than, or almost equal to, val2. Fails 1235// otherwise. In particular, it fails if either val1 or val2 is NaN. 1236AssertionResult FloatLE(const char* expr1, const char* expr2, 1237 float val1, float val2); 1238AssertionResult DoubleLE(const char* expr1, const char* expr2, 1239 double val1, double val2); 1240 1241 1242#if GTEST_OS_WINDOWS 1243 1244// Macros that test for HRESULT failure and success, these are only useful 1245// on Windows, and rely on Windows SDK macros and APIs to compile. 1246// 1247// * {ASSERT|EXPECT}_HRESULT_{SUCCEEDED|FAILED}(expr) 1248// 1249// When expr unexpectedly fails or succeeds, Google Test prints the 1250// expected result and the actual result with both a human-readable 1251// string representation of the error, if available, as well as the 1252// hex result code. 1253#define EXPECT_HRESULT_SUCCEEDED(expr) \ 1254 EXPECT_PRED_FORMAT1(::testing::internal::IsHRESULTSuccess, (expr)) 1255 1256#define ASSERT_HRESULT_SUCCEEDED(expr) \ 1257 ASSERT_PRED_FORMAT1(::testing::internal::IsHRESULTSuccess, (expr)) 1258 1259#define EXPECT_HRESULT_FAILED(expr) \ 1260 EXPECT_PRED_FORMAT1(::testing::internal::IsHRESULTFailure, (expr)) 1261 1262#define ASSERT_HRESULT_FAILED(expr) \ 1263 ASSERT_PRED_FORMAT1(::testing::internal::IsHRESULTFailure, (expr)) 1264 1265#endif // GTEST_OS_WINDOWS 1266 1267// Macros that execute statement and check that it doesn't generate new fatal 1268// failures in the current thread. 1269// 1270// * {ASSERT|EXPECT}_NO_FATAL_FAILURE(statement); 1271// 1272// Examples: 1273// 1274// EXPECT_NO_FATAL_FAILURE(Process()); 1275// ASSERT_NO_FATAL_FAILURE(Process()) << "Process() failed"; 1276// 1277#define ASSERT_NO_FATAL_FAILURE(statement) \ 1278 GTEST_TEST_NO_FATAL_FAILURE_(statement, GTEST_FATAL_FAILURE_) 1279#define EXPECT_NO_FATAL_FAILURE(statement) \ 1280 GTEST_TEST_NO_FATAL_FAILURE_(statement, GTEST_NONFATAL_FAILURE_) 1281 1282// Causes a trace (including the source file path, the current line 1283// number, and the given message) to be included in every test failure 1284// message generated by code in the current scope. The effect is 1285// undone when the control leaves the current scope. 1286// 1287// The message argument can be anything streamable to std::ostream. 1288// 1289// In the implementation, we include the current line number as part 1290// of the dummy variable name, thus allowing multiple SCOPED_TRACE()s 1291// to appear in the same block - as long as they are on different 1292// lines. 1293#define SCOPED_TRACE(message) \ 1294 ::testing::internal::ScopedTrace GTEST_CONCAT_TOKEN_(gtest_trace_, __LINE__)(\ 1295 __FILE__, __LINE__, ::testing::Message() << (message)) 1296 1297namespace internal { 1298 1299// This template is declared, but intentionally undefined. 1300template <typename T1, typename T2> 1301struct StaticAssertTypeEqHelper; 1302 1303template <typename T> 1304struct StaticAssertTypeEqHelper<T, T> {}; 1305 1306} // namespace internal 1307 1308// Compile-time assertion for type equality. 1309// StaticAssertTypeEq<type1, type2>() compiles iff type1 and type2 are 1310// the same type. The value it returns is not interesting. 1311// 1312// Instead of making StaticAssertTypeEq a class template, we make it a 1313// function template that invokes a helper class template. This 1314// prevents a user from misusing StaticAssertTypeEq<T1, T2> by 1315// defining objects of that type. 1316// 1317// CAVEAT: 1318// 1319// When used inside a method of a class template, 1320// StaticAssertTypeEq<T1, T2>() is effective ONLY IF the method is 1321// instantiated. For example, given: 1322// 1323// template <typename T> class Foo { 1324// public: 1325// void Bar() { testing::StaticAssertTypeEq<int, T>(); } 1326// }; 1327// 1328// the code: 1329// 1330// void Test1() { Foo<bool> foo; } 1331// 1332// will NOT generate a compiler error, as Foo<bool>::Bar() is never 1333// actually instantiated. Instead, you need: 1334// 1335// void Test2() { Foo<bool> foo; foo.Bar(); } 1336// 1337// to cause a compiler error. 1338template <typename T1, typename T2> 1339bool StaticAssertTypeEq() { 1340 internal::StaticAssertTypeEqHelper<T1, T2>(); 1341 return true; 1342} 1343 1344// Defines a test. 1345// 1346// The first parameter is the name of the test case, and the second 1347// parameter is the name of the test within the test case. 1348// 1349// The convention is to end the test case name with "Test". For 1350// example, a test case for the Foo class can be named FooTest. 1351// 1352// The user should put his test code between braces after using this 1353// macro. Example: 1354// 1355// TEST(FooTest, InitializesCorrectly) { 1356// Foo foo; 1357// EXPECT_TRUE(foo.StatusIsOK()); 1358// } 1359 1360// Note that we call GetTestTypeId() instead of GetTypeId< 1361// ::testing::Test>() here to get the type ID of testing::Test. This 1362// is to work around a suspected linker bug when using Google Test as 1363// a framework on Mac OS X. The bug causes GetTypeId< 1364// ::testing::Test>() to return different values depending on whether 1365// the call is from the Google Test framework itself or from user test 1366// code. GetTestTypeId() is guaranteed to always return the same 1367// value, as it always calls GetTypeId<>() from the Google Test 1368// framework. 1369#define TEST(test_case_name, test_name)\ 1370 GTEST_TEST_(test_case_name, test_name, \ 1371 ::testing::Test, ::testing::internal::GetTestTypeId()) 1372 1373 1374// Defines a test that uses a test fixture. 1375// 1376// The first parameter is the name of the test fixture class, which 1377// also doubles as the test case name. The second parameter is the 1378// name of the test within the test case. 1379// 1380// A test fixture class must be declared earlier. The user should put 1381// his test code between braces after using this macro. Example: 1382// 1383// class FooTest : public testing::Test { 1384// protected: 1385// virtual void SetUp() { b_.AddElement(3); } 1386// 1387// Foo a_; 1388// Foo b_; 1389// }; 1390// 1391// TEST_F(FooTest, InitializesCorrectly) { 1392// EXPECT_TRUE(a_.StatusIsOK()); 1393// } 1394// 1395// TEST_F(FooTest, ReturnsElementCountCorrectly) { 1396// EXPECT_EQ(0, a_.size()); 1397// EXPECT_EQ(1, b_.size()); 1398// } 1399 1400#define TEST_F(test_fixture, test_name)\ 1401 GTEST_TEST_(test_fixture, test_name, test_fixture, \ 1402 ::testing::internal::GetTypeId<test_fixture>()) 1403 1404// Use this macro in main() to run all tests. It returns 0 if all 1405// tests are successful, or 1 otherwise. 1406// 1407// RUN_ALL_TESTS() should be invoked after the command line has been 1408// parsed by InitGoogleTest(). 1409 1410#define RUN_ALL_TESTS()\ 1411 (::testing::UnitTest::GetInstance()->Run()) 1412 1413} // namespace testing 1414 1415#endif // GTEST_INCLUDE_GTEST_GTEST_H_ 1416