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 // Authors: wan (at) google.com (Zhanyong Wan), eefacm (at) gmail.com (Sean Mcafee) 31 // 32 // The Google C++ Testing Framework (Google Test) 33 // 34 // This header file declares functions and macros used internally by 35 // Google Test. They are subject to change without notice. 36 37 #ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_INTERNAL_H_ 38 #define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_INTERNAL_H_ 39 40 #include "gtest/internal/gtest-port.h" 41 42 #if GTEST_OS_LINUX 43 # include <stdlib.h> 44 # include <sys/types.h> 45 # include <sys/wait.h> 46 # include <unistd.h> 47 #endif // GTEST_OS_LINUX 48 49 #include <ctype.h> 50 #include <string.h> 51 #include <iomanip> 52 #include <limits> 53 #include <set> 54 55 #include "gtest/internal/gtest-string.h" 56 #include "gtest/internal/gtest-filepath.h" 57 #include "gtest/internal/gtest-type-util.h" 58 59 // Due to C++ preprocessor weirdness, we need double indirection to 60 // concatenate two tokens when one of them is __LINE__. Writing 61 // 62 // foo ## __LINE__ 63 // 64 // will result in the token foo__LINE__, instead of foo followed by 65 // the current line number. For more details, see 66 // http://www.parashift.com/c++-faq-lite/misc-technical-issues.html#faq-39.6 67 #define GTEST_CONCAT_TOKEN_(foo, bar) GTEST_CONCAT_TOKEN_IMPL_(foo, bar) 68 #define GTEST_CONCAT_TOKEN_IMPL_(foo, bar) foo ## bar 69 70 // Google Test defines the testing::Message class to allow construction of 71 // test messages via the << operator. The idea is that anything 72 // streamable to std::ostream can be streamed to a testing::Message. 73 // This allows a user to use his own types in Google Test assertions by 74 // overloading the << operator. 75 // 76 // util/gtl/stl_logging-inl.h overloads << for STL containers. These 77 // overloads cannot be defined in the std namespace, as that will be 78 // undefined behavior. Therefore, they are defined in the global 79 // namespace instead. 80 // 81 // C++'s symbol lookup rule (i.e. Koenig lookup) says that these 82 // overloads are visible in either the std namespace or the global 83 // namespace, but not other namespaces, including the testing 84 // namespace which Google Test's Message class is in. 85 // 86 // To allow STL containers (and other types that has a << operator 87 // defined in the global namespace) to be used in Google Test assertions, 88 // testing::Message must access the custom << operator from the global 89 // namespace. Hence this helper function. 90 // 91 // Note: Jeffrey Yasskin suggested an alternative fix by "using 92 // ::operator<<;" in the definition of Message's operator<<. That fix 93 // doesn't require a helper function, but unfortunately doesn't 94 // compile with MSVC. 95 template <typename T> 96 inline void GTestStreamToHelper(std::ostream* os, const T& val) { 97 *os << val; 98 } 99 100 class ProtocolMessage; 101 namespace proto2 { class Message; } 102 103 namespace testing { 104 105 // Forward declarations. 106 107 class AssertionResult; // Result of an assertion. 108 class Message; // Represents a failure message. 109 class Test; // Represents a test. 110 class TestInfo; // Information about a test. 111 class TestPartResult; // Result of a test part. 112 class UnitTest; // A collection of test cases. 113 114 template <typename T> 115 ::std::string PrintToString(const T& value); 116 117 namespace internal { 118 119 struct TraceInfo; // Information about a trace point. 120 class ScopedTrace; // Implements scoped trace. 121 class TestInfoImpl; // Opaque implementation of TestInfo 122 class UnitTestImpl; // Opaque implementation of UnitTest 123 124 // How many times InitGoogleTest() has been called. 125 GTEST_API_ extern int g_init_gtest_count; 126 127 // The text used in failure messages to indicate the start of the 128 // stack trace. 129 GTEST_API_ extern const char kStackTraceMarker[]; 130 131 // A secret type that Google Test users don't know about. It has no 132 // definition on purpose. Therefore it's impossible to create a 133 // Secret object, which is what we want. 134 class Secret; 135 136 // Two overloaded helpers for checking at compile time whether an 137 // expression is a null pointer literal (i.e. NULL or any 0-valued 138 // compile-time integral constant). Their return values have 139 // different sizes, so we can use sizeof() to test which version is 140 // picked by the compiler. These helpers have no implementations, as 141 // we only need their signatures. 142 // 143 // Given IsNullLiteralHelper(x), the compiler will pick the first 144 // version if x can be implicitly converted to Secret*, and pick the 145 // second version otherwise. Since Secret is a secret and incomplete 146 // type, the only expression a user can write that has type Secret* is 147 // a null pointer literal. Therefore, we know that x is a null 148 // pointer literal if and only if the first version is picked by the 149 // compiler. 150 char IsNullLiteralHelper(Secret* p); 151 char (&IsNullLiteralHelper(...))[2]; // NOLINT 152 153 // A compile-time bool constant that is true if and only if x is a 154 // null pointer literal (i.e. NULL or any 0-valued compile-time 155 // integral constant). 156 #ifdef GTEST_ELLIPSIS_NEEDS_POD_ 157 // We lose support for NULL detection where the compiler doesn't like 158 // passing non-POD classes through ellipsis (...). 159 # define GTEST_IS_NULL_LITERAL_(x) false 160 #else 161 # define GTEST_IS_NULL_LITERAL_(x) \ 162 (sizeof(::testing::internal::IsNullLiteralHelper(x)) == 1) 163 #endif // GTEST_ELLIPSIS_NEEDS_POD_ 164 165 // Appends the user-supplied message to the Google-Test-generated message. 166 GTEST_API_ String AppendUserMessage(const String& gtest_msg, 167 const Message& user_msg); 168 169 // A helper class for creating scoped traces in user programs. 170 class GTEST_API_ ScopedTrace { 171 public: 172 // The c'tor pushes the given source file location and message onto 173 // a trace stack maintained by Google Test. 174 ScopedTrace(const char* file, int line, const Message& message); 175 176 // The d'tor pops the info pushed by the c'tor. 177 // 178 // Note that the d'tor is not virtual in order to be efficient. 179 // Don't inherit from ScopedTrace! 180 ~ScopedTrace(); 181 182 private: 183 GTEST_DISALLOW_COPY_AND_ASSIGN_(ScopedTrace); 184 } GTEST_ATTRIBUTE_UNUSED_; // A ScopedTrace object does its job in its 185 // c'tor and d'tor. Therefore it doesn't 186 // need to be used otherwise. 187 188 // Converts a streamable value to a String. A NULL pointer is 189 // converted to "(null)". When the input value is a ::string, 190 // ::std::string, ::wstring, or ::std::wstring object, each NUL 191 // character in it is replaced with "\\0". 192 // Declared here but defined in gtest.h, so that it has access 193 // to the definition of the Message class, required by the ARM 194 // compiler. 195 template <typename T> 196 String StreamableToString(const T& streamable); 197 198 // The Symbian compiler has a bug that prevents it from selecting the 199 // correct overload of FormatForComparisonFailureMessage (see below) 200 // unless we pass the first argument by reference. If we do that, 201 // however, Visual Age C++ 10.1 generates a compiler error. Therefore 202 // we only apply the work-around for Symbian. 203 #if defined(__SYMBIAN32__) 204 # define GTEST_CREF_WORKAROUND_ const& 205 #else 206 # define GTEST_CREF_WORKAROUND_ 207 #endif 208 209 // When this operand is a const char* or char*, if the other operand 210 // is a ::std::string or ::string, we print this operand as a C string 211 // rather than a pointer (we do the same for wide strings); otherwise 212 // we print it as a pointer to be safe. 213 214 // This internal macro is used to avoid duplicated code. 215 #define GTEST_FORMAT_IMPL_(operand2_type, operand1_printer)\ 216 inline String FormatForComparisonFailureMessage(\ 217 operand2_type::value_type* GTEST_CREF_WORKAROUND_ str, \ 218 const operand2_type& /*operand2*/) {\ 219 return operand1_printer(str);\ 220 }\ 221 inline String FormatForComparisonFailureMessage(\ 222 const operand2_type::value_type* GTEST_CREF_WORKAROUND_ str, \ 223 const operand2_type& /*operand2*/) {\ 224 return operand1_printer(str);\ 225 } 226 227 GTEST_FORMAT_IMPL_(::std::string, String::ShowCStringQuoted) 228 #if GTEST_HAS_STD_WSTRING 229 GTEST_FORMAT_IMPL_(::std::wstring, String::ShowWideCStringQuoted) 230 #endif // GTEST_HAS_STD_WSTRING 231 232 #if GTEST_HAS_GLOBAL_STRING 233 GTEST_FORMAT_IMPL_(::string, String::ShowCStringQuoted) 234 #endif // GTEST_HAS_GLOBAL_STRING 235 #if GTEST_HAS_GLOBAL_WSTRING 236 GTEST_FORMAT_IMPL_(::wstring, String::ShowWideCStringQuoted) 237 #endif // GTEST_HAS_GLOBAL_WSTRING 238 239 #undef GTEST_FORMAT_IMPL_ 240 241 // The next four overloads handle the case where the operand being 242 // printed is a char/wchar_t pointer and the other operand is not a 243 // string/wstring object. In such cases, we just print the operand as 244 // a pointer to be safe. 245 #define GTEST_FORMAT_CHAR_PTR_IMPL_(CharType) \ 246 template <typename T> \ 247 String FormatForComparisonFailureMessage(CharType* GTEST_CREF_WORKAROUND_ p, \ 248 const T&) { \ 249 return PrintToString(static_cast<const void*>(p)); \ 250 } 251 252 GTEST_FORMAT_CHAR_PTR_IMPL_(char) 253 GTEST_FORMAT_CHAR_PTR_IMPL_(const char) 254 GTEST_FORMAT_CHAR_PTR_IMPL_(wchar_t) 255 GTEST_FORMAT_CHAR_PTR_IMPL_(const wchar_t) 256 257 #undef GTEST_FORMAT_CHAR_PTR_IMPL_ 258 259 // Constructs and returns the message for an equality assertion 260 // (e.g. ASSERT_EQ, EXPECT_STREQ, etc) failure. 261 // 262 // The first four parameters are the expressions used in the assertion 263 // and their values, as strings. For example, for ASSERT_EQ(foo, bar) 264 // where foo is 5 and bar is 6, we have: 265 // 266 // expected_expression: "foo" 267 // actual_expression: "bar" 268 // expected_value: "5" 269 // actual_value: "6" 270 // 271 // The ignoring_case parameter is true iff the assertion is a 272 // *_STRCASEEQ*. When it's true, the string " (ignoring case)" will 273 // be inserted into the message. 274 GTEST_API_ AssertionResult EqFailure(const char* expected_expression, 275 const char* actual_expression, 276 const String& expected_value, 277 const String& actual_value, 278 bool ignoring_case); 279 280 // Constructs a failure message for Boolean assertions such as EXPECT_TRUE. 281 GTEST_API_ String GetBoolAssertionFailureMessage( 282 const AssertionResult& assertion_result, 283 const char* expression_text, 284 const char* actual_predicate_value, 285 const char* expected_predicate_value); 286 287 // This template class represents an IEEE floating-point number 288 // (either single-precision or double-precision, depending on the 289 // template parameters). 290 // 291 // The purpose of this class is to do more sophisticated number 292 // comparison. (Due to round-off error, etc, it's very unlikely that 293 // two floating-points will be equal exactly. Hence a naive 294 // comparison by the == operation often doesn't work.) 295 // 296 // Format of IEEE floating-point: 297 // 298 // The most-significant bit being the leftmost, an IEEE 299 // floating-point looks like 300 // 301 // sign_bit exponent_bits fraction_bits 302 // 303 // Here, sign_bit is a single bit that designates the sign of the 304 // number. 305 // 306 // For float, there are 8 exponent bits and 23 fraction bits. 307 // 308 // For double, there are 11 exponent bits and 52 fraction bits. 309 // 310 // More details can be found at 311 // http://en.wikipedia.org/wiki/IEEE_floating-point_standard. 312 // 313 // Template parameter: 314 // 315 // RawType: the raw floating-point type (either float or double) 316 template <typename RawType> 317 class FloatingPoint { 318 public: 319 // Defines the unsigned integer type that has the same size as the 320 // floating point number. 321 typedef typename TypeWithSize<sizeof(RawType)>::UInt Bits; 322 323 // Constants. 324 325 // # of bits in a number. 326 static const size_t kBitCount = 8*sizeof(RawType); 327 328 // # of fraction bits in a number. 329 static const size_t kFractionBitCount = 330 std::numeric_limits<RawType>::digits - 1; 331 332 // # of exponent bits in a number. 333 static const size_t kExponentBitCount = kBitCount - 1 - kFractionBitCount; 334 335 // The mask for the sign bit. 336 static const Bits kSignBitMask = static_cast<Bits>(1) << (kBitCount - 1); 337 338 // The mask for the fraction bits. 339 static const Bits kFractionBitMask = 340 ~static_cast<Bits>(0) >> (kExponentBitCount + 1); 341 342 // The mask for the exponent bits. 343 static const Bits kExponentBitMask = ~(kSignBitMask | kFractionBitMask); 344 345 // How many ULP's (Units in the Last Place) we want to tolerate when 346 // comparing two numbers. The larger the value, the more error we 347 // allow. A 0 value means that two numbers must be exactly the same 348 // to be considered equal. 349 // 350 // The maximum error of a single floating-point operation is 0.5 351 // units in the last place. On Intel CPU's, all floating-point 352 // calculations are done with 80-bit precision, while double has 64 353 // bits. Therefore, 4 should be enough for ordinary use. 354 // 355 // See the following article for more details on ULP: 356 // http://www.cygnus-software.com/papers/comparingfloats/comparingfloats.htm. 357 static const size_t kMaxUlps = 4; 358 359 // Constructs a FloatingPoint from a raw floating-point number. 360 // 361 // On an Intel CPU, passing a non-normalized NAN (Not a Number) 362 // around may change its bits, although the new value is guaranteed 363 // to be also a NAN. Therefore, don't expect this constructor to 364 // preserve the bits in x when x is a NAN. 365 explicit FloatingPoint(const RawType& x) { u_.value_ = x; } 366 367 // Static methods 368 369 // Reinterprets a bit pattern as a floating-point number. 370 // 371 // This function is needed to test the AlmostEquals() method. 372 static RawType ReinterpretBits(const Bits bits) { 373 FloatingPoint fp(0); 374 fp.u_.bits_ = bits; 375 return fp.u_.value_; 376 } 377 378 // Returns the floating-point number that represent positive infinity. 379 static RawType Infinity() { 380 return ReinterpretBits(kExponentBitMask); 381 } 382 383 // Non-static methods 384 385 // Returns the bits that represents this number. 386 const Bits &bits() const { return u_.bits_; } 387 388 // Returns the exponent bits of this number. 389 Bits exponent_bits() const { return kExponentBitMask & u_.bits_; } 390 391 // Returns the fraction bits of this number. 392 Bits fraction_bits() const { return kFractionBitMask & u_.bits_; } 393 394 // Returns the sign bit of this number. 395 Bits sign_bit() const { return kSignBitMask & u_.bits_; } 396 397 // Returns true iff this is NAN (not a number). 398 bool is_nan() const { 399 // It's a NAN if the exponent bits are all ones and the fraction 400 // bits are not entirely zeros. 401 return (exponent_bits() == kExponentBitMask) && (fraction_bits() != 0); 402 } 403 404 // Returns true iff this number is at most kMaxUlps ULP's away from 405 // rhs. In particular, this function: 406 // 407 // - returns false if either number is (or both are) NAN. 408 // - treats really large numbers as almost equal to infinity. 409 // - thinks +0.0 and -0.0 are 0 DLP's apart. 410 bool AlmostEquals(const FloatingPoint& rhs) const { 411 // The IEEE standard says that any comparison operation involving 412 // a NAN must return false. 413 if (is_nan() || rhs.is_nan()) return false; 414 415 return DistanceBetweenSignAndMagnitudeNumbers(u_.bits_, rhs.u_.bits_) 416 <= kMaxUlps; 417 } 418 419 private: 420 // The data type used to store the actual floating-point number. 421 union FloatingPointUnion { 422 RawType value_; // The raw floating-point number. 423 Bits bits_; // The bits that represent the number. 424 }; 425 426 // Converts an integer from the sign-and-magnitude representation to 427 // the biased representation. More precisely, let N be 2 to the 428 // power of (kBitCount - 1), an integer x is represented by the 429 // unsigned number x + N. 430 // 431 // For instance, 432 // 433 // -N + 1 (the most negative number representable using 434 // sign-and-magnitude) is represented by 1; 435 // 0 is represented by N; and 436 // N - 1 (the biggest number representable using 437 // sign-and-magnitude) is represented by 2N - 1. 438 // 439 // Read http://en.wikipedia.org/wiki/Signed_number_representations 440 // for more details on signed number representations. 441 static Bits SignAndMagnitudeToBiased(const Bits &sam) { 442 if (kSignBitMask & sam) { 443 // sam represents a negative number. 444 return ~sam + 1; 445 } else { 446 // sam represents a positive number. 447 return kSignBitMask | sam; 448 } 449 } 450 451 // Given two numbers in the sign-and-magnitude representation, 452 // returns the distance between them as an unsigned number. 453 static Bits DistanceBetweenSignAndMagnitudeNumbers(const Bits &sam1, 454 const Bits &sam2) { 455 const Bits biased1 = SignAndMagnitudeToBiased(sam1); 456 const Bits biased2 = SignAndMagnitudeToBiased(sam2); 457 return (biased1 >= biased2) ? (biased1 - biased2) : (biased2 - biased1); 458 } 459 460 FloatingPointUnion u_; 461 }; 462 463 // Typedefs the instances of the FloatingPoint template class that we 464 // care to use. 465 typedef FloatingPoint<float> Float; 466 typedef FloatingPoint<double> Double; 467 468 // In order to catch the mistake of putting tests that use different 469 // test fixture classes in the same test case, we need to assign 470 // unique IDs to fixture classes and compare them. The TypeId type is 471 // used to hold such IDs. The user should treat TypeId as an opaque 472 // type: the only operation allowed on TypeId values is to compare 473 // them for equality using the == operator. 474 typedef const void* TypeId; 475 476 template <typename T> 477 class TypeIdHelper { 478 public: 479 // dummy_ must not have a const type. Otherwise an overly eager 480 // compiler (e.g. MSVC 7.1 & 8.0) may try to merge 481 // TypeIdHelper<T>::dummy_ for different Ts as an "optimization". 482 static bool dummy_; 483 }; 484 485 template <typename T> 486 bool TypeIdHelper<T>::dummy_ = false; 487 488 // GetTypeId<T>() returns the ID of type T. Different values will be 489 // returned for different types. Calling the function twice with the 490 // same type argument is guaranteed to return the same ID. 491 template <typename T> 492 TypeId GetTypeId() { 493 // The compiler is required to allocate a different 494 // TypeIdHelper<T>::dummy_ variable for each T used to instantiate 495 // the template. Therefore, the address of dummy_ is guaranteed to 496 // be unique. 497 return &(TypeIdHelper<T>::dummy_); 498 } 499 500 // Returns the type ID of ::testing::Test. Always call this instead 501 // of GetTypeId< ::testing::Test>() to get the type ID of 502 // ::testing::Test, as the latter may give the wrong result due to a 503 // suspected linker bug when compiling Google Test as a Mac OS X 504 // framework. 505 GTEST_API_ TypeId GetTestTypeId(); 506 507 // Defines the abstract factory interface that creates instances 508 // of a Test object. 509 class TestFactoryBase { 510 public: 511 virtual ~TestFactoryBase() {} 512 513 // Creates a test instance to run. The instance is both created and destroyed 514 // within TestInfoImpl::Run() 515 virtual Test* CreateTest() = 0; 516 517 protected: 518 TestFactoryBase() {} 519 520 private: 521 GTEST_DISALLOW_COPY_AND_ASSIGN_(TestFactoryBase); 522 }; 523 524 // This class provides implementation of TeastFactoryBase interface. 525 // It is used in TEST and TEST_F macros. 526 template <class TestClass> 527 class TestFactoryImpl : public TestFactoryBase { 528 public: 529 virtual Test* CreateTest() { return new TestClass; } 530 }; 531 532 #if GTEST_OS_WINDOWS 533 534 // Predicate-formatters for implementing the HRESULT checking macros 535 // {ASSERT|EXPECT}_HRESULT_{SUCCEEDED|FAILED} 536 // We pass a long instead of HRESULT to avoid causing an 537 // include dependency for the HRESULT type. 538 GTEST_API_ AssertionResult IsHRESULTSuccess(const char* expr, 539 long hr); // NOLINT 540 GTEST_API_ AssertionResult IsHRESULTFailure(const char* expr, 541 long hr); // NOLINT 542 543 #endif // GTEST_OS_WINDOWS 544 545 // Types of SetUpTestCase() and TearDownTestCase() functions. 546 typedef void (*SetUpTestCaseFunc)(); 547 typedef void (*TearDownTestCaseFunc)(); 548 549 // Creates a new TestInfo object and registers it with Google Test; 550 // returns the created object. 551 // 552 // Arguments: 553 // 554 // test_case_name: name of the test case 555 // name: name of the test 556 // type_param the name of the test's type parameter, or NULL if 557 // this is not a typed or a type-parameterized test. 558 // value_param text representation of the test's value parameter, 559 // or NULL if this is not a type-parameterized test. 560 // fixture_class_id: ID of the test fixture class 561 // set_up_tc: pointer to the function that sets up the test case 562 // tear_down_tc: pointer to the function that tears down the test case 563 // factory: pointer to the factory that creates a test object. 564 // The newly created TestInfo instance will assume 565 // ownership of the factory object. 566 GTEST_API_ TestInfo* MakeAndRegisterTestInfo( 567 const char* test_case_name, const char* name, 568 const char* type_param, 569 const char* value_param, 570 TypeId fixture_class_id, 571 SetUpTestCaseFunc set_up_tc, 572 TearDownTestCaseFunc tear_down_tc, 573 TestFactoryBase* factory); 574 575 // If *pstr starts with the given prefix, modifies *pstr to be right 576 // past the prefix and returns true; otherwise leaves *pstr unchanged 577 // and returns false. None of pstr, *pstr, and prefix can be NULL. 578 GTEST_API_ bool SkipPrefix(const char* prefix, const char** pstr); 579 580 #if GTEST_HAS_TYPED_TEST || GTEST_HAS_TYPED_TEST_P 581 582 // State of the definition of a type-parameterized test case. 583 class GTEST_API_ TypedTestCasePState { 584 public: 585 TypedTestCasePState() : registered_(false) {} 586 587 // Adds the given test name to defined_test_names_ and return true 588 // if the test case hasn't been registered; otherwise aborts the 589 // program. 590 bool AddTestName(const char* file, int line, const char* case_name, 591 const char* test_name) { 592 if (registered_) { 593 fprintf(stderr, "%s Test %s must be defined before " 594 "REGISTER_TYPED_TEST_CASE_P(%s, ...).\n", 595 FormatFileLocation(file, line).c_str(), test_name, case_name); 596 fflush(stderr); 597 posix::Abort(); 598 } 599 defined_test_names_.insert(test_name); 600 return true; 601 } 602 603 // Verifies that registered_tests match the test names in 604 // defined_test_names_; returns registered_tests if successful, or 605 // aborts the program otherwise. 606 const char* VerifyRegisteredTestNames( 607 const char* file, int line, const char* registered_tests); 608 609 private: 610 bool registered_; 611 ::std::set<const char*> defined_test_names_; 612 }; 613 614 // Skips to the first non-space char after the first comma in 'str'; 615 // returns NULL if no comma is found in 'str'. 616 inline const char* SkipComma(const char* str) { 617 const char* comma = strchr(str, ','); 618 if (comma == NULL) { 619 return NULL; 620 } 621 while (IsSpace(*(++comma))) {} 622 return comma; 623 } 624 625 // Returns the prefix of 'str' before the first comma in it; returns 626 // the entire string if it contains no comma. 627 inline String GetPrefixUntilComma(const char* str) { 628 const char* comma = strchr(str, ','); 629 return comma == NULL ? String(str) : String(str, comma - str); 630 } 631 632 // TypeParameterizedTest<Fixture, TestSel, Types>::Register() 633 // registers a list of type-parameterized tests with Google Test. The 634 // return value is insignificant - we just need to return something 635 // such that we can call this function in a namespace scope. 636 // 637 // Implementation note: The GTEST_TEMPLATE_ macro declares a template 638 // template parameter. It's defined in gtest-type-util.h. 639 template <GTEST_TEMPLATE_ Fixture, class TestSel, typename Types> 640 class TypeParameterizedTest { 641 public: 642 // 'index' is the index of the test in the type list 'Types' 643 // specified in INSTANTIATE_TYPED_TEST_CASE_P(Prefix, TestCase, 644 // Types). Valid values for 'index' are [0, N - 1] where N is the 645 // length of Types. 646 static bool Register(const char* prefix, const char* case_name, 647 const char* test_names, int index) { 648 typedef typename Types::Head Type; 649 typedef Fixture<Type> FixtureClass; 650 typedef typename GTEST_BIND_(TestSel, Type) TestClass; 651 652 // First, registers the first type-parameterized test in the type 653 // list. 654 MakeAndRegisterTestInfo( 655 String::Format("%s%s%s/%d", prefix, prefix[0] == '\0' ? "" : "/", 656 case_name, index).c_str(), 657 GetPrefixUntilComma(test_names).c_str(), 658 GetTypeName<Type>().c_str(), 659 NULL, // No value parameter. 660 GetTypeId<FixtureClass>(), 661 TestClass::SetUpTestCase, 662 TestClass::TearDownTestCase, 663 new TestFactoryImpl<TestClass>); 664 665 // Next, recurses (at compile time) with the tail of the type list. 666 return TypeParameterizedTest<Fixture, TestSel, typename Types::Tail> 667 ::Register(prefix, case_name, test_names, index + 1); 668 } 669 }; 670 671 // The base case for the compile time recursion. 672 template <GTEST_TEMPLATE_ Fixture, class TestSel> 673 class TypeParameterizedTest<Fixture, TestSel, Types0> { 674 public: 675 static bool Register(const char* /*prefix*/, const char* /*case_name*/, 676 const char* /*test_names*/, int /*index*/) { 677 return true; 678 } 679 }; 680 681 // TypeParameterizedTestCase<Fixture, Tests, Types>::Register() 682 // registers *all combinations* of 'Tests' and 'Types' with Google 683 // Test. The return value is insignificant - we just need to return 684 // something such that we can call this function in a namespace scope. 685 template <GTEST_TEMPLATE_ Fixture, typename Tests, typename Types> 686 class TypeParameterizedTestCase { 687 public: 688 static bool Register(const char* prefix, const char* case_name, 689 const char* test_names) { 690 typedef typename Tests::Head Head; 691 692 // First, register the first test in 'Test' for each type in 'Types'. 693 TypeParameterizedTest<Fixture, Head, Types>::Register( 694 prefix, case_name, test_names, 0); 695 696 // Next, recurses (at compile time) with the tail of the test list. 697 return TypeParameterizedTestCase<Fixture, typename Tests::Tail, Types> 698 ::Register(prefix, case_name, SkipComma(test_names)); 699 } 700 }; 701 702 // The base case for the compile time recursion. 703 template <GTEST_TEMPLATE_ Fixture, typename Types> 704 class TypeParameterizedTestCase<Fixture, Templates0, Types> { 705 public: 706 static bool Register(const char* /*prefix*/, const char* /*case_name*/, 707 const char* /*test_names*/) { 708 return true; 709 } 710 }; 711 712 #endif // GTEST_HAS_TYPED_TEST || GTEST_HAS_TYPED_TEST_P 713 714 // Returns the current OS stack trace as a String. 715 // 716 // The maximum number of stack frames to be included is specified by 717 // the gtest_stack_trace_depth flag. The skip_count parameter 718 // specifies the number of top frames to be skipped, which doesn't 719 // count against the number of frames to be included. 720 // 721 // For example, if Foo() calls Bar(), which in turn calls 722 // GetCurrentOsStackTraceExceptTop(..., 1), Foo() will be included in 723 // the trace but Bar() and GetCurrentOsStackTraceExceptTop() won't. 724 GTEST_API_ String GetCurrentOsStackTraceExceptTop(UnitTest* unit_test, 725 int skip_count); 726 727 // Helpers for suppressing warnings on unreachable code or constant 728 // condition. 729 730 // Always returns true. 731 GTEST_API_ bool AlwaysTrue(); 732 733 // Always returns false. 734 inline bool AlwaysFalse() { return !AlwaysTrue(); } 735 736 // Helper for suppressing false warning from Clang on a const char* 737 // variable declared in a conditional expression always being NULL in 738 // the else branch. 739 struct GTEST_API_ ConstCharPtr { 740 ConstCharPtr(const char* str) : value(str) {} 741 operator bool() const { return true; } 742 const char* value; 743 }; 744 745 // A simple Linear Congruential Generator for generating random 746 // numbers with a uniform distribution. Unlike rand() and srand(), it 747 // doesn't use global state (and therefore can't interfere with user 748 // code). Unlike rand_r(), it's portable. An LCG isn't very random, 749 // but it's good enough for our purposes. 750 class GTEST_API_ Random { 751 public: 752 static const UInt32 kMaxRange = 1u << 31; 753 754 explicit Random(UInt32 seed) : state_(seed) {} 755 756 void Reseed(UInt32 seed) { state_ = seed; } 757 758 // Generates a random number from [0, range). Crashes if 'range' is 759 // 0 or greater than kMaxRange. 760 UInt32 Generate(UInt32 range); 761 762 private: 763 UInt32 state_; 764 GTEST_DISALLOW_COPY_AND_ASSIGN_(Random); 765 }; 766 767 // Defining a variable of type CompileAssertTypesEqual<T1, T2> will cause a 768 // compiler error iff T1 and T2 are different types. 769 template <typename T1, typename T2> 770 struct CompileAssertTypesEqual; 771 772 template <typename T> 773 struct CompileAssertTypesEqual<T, T> { 774 }; 775 776 // Removes the reference from a type if it is a reference type, 777 // otherwise leaves it unchanged. This is the same as 778 // tr1::remove_reference, which is not widely available yet. 779 template <typename T> 780 struct RemoveReference { typedef T type; }; // NOLINT 781 template <typename T> 782 struct RemoveReference<T&> { typedef T type; }; // NOLINT 783 784 // A handy wrapper around RemoveReference that works when the argument 785 // T depends on template parameters. 786 #define GTEST_REMOVE_REFERENCE_(T) \ 787 typename ::testing::internal::RemoveReference<T>::type 788 789 // Removes const from a type if it is a const type, otherwise leaves 790 // it unchanged. This is the same as tr1::remove_const, which is not 791 // widely available yet. 792 template <typename T> 793 struct RemoveConst { typedef T type; }; // NOLINT 794 template <typename T> 795 struct RemoveConst<const T> { typedef T type; }; // NOLINT 796 797 // MSVC 8.0, Sun C++, and IBM XL C++ have a bug which causes the above 798 // definition to fail to remove the const in 'const int[3]' and 'const 799 // char[3][4]'. The following specialization works around the bug. 800 template <typename T, size_t N> 801 struct RemoveConst<const T[N]> { 802 typedef typename RemoveConst<T>::type type[N]; 803 }; 804 805 #if defined(_MSC_VER) && _MSC_VER < 1400 806 // This is the only specialization that allows VC++ 7.1 to remove const in 807 // 'const int[3] and 'const int[3][4]'. However, it causes trouble with GCC 808 // and thus needs to be conditionally compiled. 809 template <typename T, size_t N> 810 struct RemoveConst<T[N]> { 811 typedef typename RemoveConst<T>::type type[N]; 812 }; 813 #endif 814 815 // A handy wrapper around RemoveConst that works when the argument 816 // T depends on template parameters. 817 #define GTEST_REMOVE_CONST_(T) \ 818 typename ::testing::internal::RemoveConst<T>::type 819 820 // Turns const U&, U&, const U, and U all into U. 821 #define GTEST_REMOVE_REFERENCE_AND_CONST_(T) \ 822 GTEST_REMOVE_CONST_(GTEST_REMOVE_REFERENCE_(T)) 823 824 // Adds reference to a type if it is not a reference type, 825 // otherwise leaves it unchanged. This is the same as 826 // tr1::add_reference, which is not widely available yet. 827 template <typename T> 828 struct AddReference { typedef T& type; }; // NOLINT 829 template <typename T> 830 struct AddReference<T&> { typedef T& type; }; // NOLINT 831 832 // A handy wrapper around AddReference that works when the argument T 833 // depends on template parameters. 834 #define GTEST_ADD_REFERENCE_(T) \ 835 typename ::testing::internal::AddReference<T>::type 836 837 // Adds a reference to const on top of T as necessary. For example, 838 // it transforms 839 // 840 // char ==> const char& 841 // const char ==> const char& 842 // char& ==> const char& 843 // const char& ==> const char& 844 // 845 // The argument T must depend on some template parameters. 846 #define GTEST_REFERENCE_TO_CONST_(T) \ 847 GTEST_ADD_REFERENCE_(const GTEST_REMOVE_REFERENCE_(T)) 848 849 // ImplicitlyConvertible<From, To>::value is a compile-time bool 850 // constant that's true iff type From can be implicitly converted to 851 // type To. 852 template <typename From, typename To> 853 class ImplicitlyConvertible { 854 private: 855 // We need the following helper functions only for their types. 856 // They have no implementations. 857 858 // MakeFrom() is an expression whose type is From. We cannot simply 859 // use From(), as the type From may not have a public default 860 // constructor. 861 static From MakeFrom(); 862 863 // These two functions are overloaded. Given an expression 864 // Helper(x), the compiler will pick the first version if x can be 865 // implicitly converted to type To; otherwise it will pick the 866 // second version. 867 // 868 // The first version returns a value of size 1, and the second 869 // version returns a value of size 2. Therefore, by checking the 870 // size of Helper(x), which can be done at compile time, we can tell 871 // which version of Helper() is used, and hence whether x can be 872 // implicitly converted to type To. 873 static char Helper(To); 874 static char (&Helper(...))[2]; // NOLINT 875 876 // We have to put the 'public' section after the 'private' section, 877 // or MSVC refuses to compile the code. 878 public: 879 // MSVC warns about implicitly converting from double to int for 880 // possible loss of data, so we need to temporarily disable the 881 // warning. 882 #ifdef _MSC_VER 883 # pragma warning(push) // Saves the current warning state. 884 # pragma warning(disable:4244) // Temporarily disables warning 4244. 885 886 static const bool value = 887 sizeof(Helper(ImplicitlyConvertible::MakeFrom())) == 1; 888 # pragma warning(pop) // Restores the warning state. 889 #elif defined(__BORLANDC__) 890 // C++Builder cannot use member overload resolution during template 891 // instantiation. The simplest workaround is to use its C++0x type traits 892 // functions (C++Builder 2009 and above only). 893 static const bool value = __is_convertible(From, To); 894 #else 895 static const bool value = 896 sizeof(Helper(ImplicitlyConvertible::MakeFrom())) == 1; 897 #endif // _MSV_VER 898 }; 899 template <typename From, typename To> 900 const bool ImplicitlyConvertible<From, To>::value; 901 902 // IsAProtocolMessage<T>::value is a compile-time bool constant that's 903 // true iff T is type ProtocolMessage, proto2::Message, or a subclass 904 // of those. 905 template <typename T> 906 struct IsAProtocolMessage 907 : public bool_constant< 908 ImplicitlyConvertible<const T*, const ::ProtocolMessage*>::value || 909 ImplicitlyConvertible<const T*, const ::proto2::Message*>::value> { 910 }; 911 912 // When the compiler sees expression IsContainerTest<C>(0), if C is an 913 // STL-style container class, the first overload of IsContainerTest 914 // will be viable (since both C::iterator* and C::const_iterator* are 915 // valid types and NULL can be implicitly converted to them). It will 916 // be picked over the second overload as 'int' is a perfect match for 917 // the type of argument 0. If C::iterator or C::const_iterator is not 918 // a valid type, the first overload is not viable, and the second 919 // overload will be picked. Therefore, we can determine whether C is 920 // a container class by checking the type of IsContainerTest<C>(0). 921 // The value of the expression is insignificant. 922 // 923 // Note that we look for both C::iterator and C::const_iterator. The 924 // reason is that C++ injects the name of a class as a member of the 925 // class itself (e.g. you can refer to class iterator as either 926 // 'iterator' or 'iterator::iterator'). If we look for C::iterator 927 // only, for example, we would mistakenly think that a class named 928 // iterator is an STL container. 929 // 930 // Also note that the simpler approach of overloading 931 // IsContainerTest(typename C::const_iterator*) and 932 // IsContainerTest(...) doesn't work with Visual Age C++ and Sun C++. 933 typedef int IsContainer; 934 template <class C> 935 IsContainer IsContainerTest(int /* dummy */, 936 typename C::iterator* /* it */ = NULL, 937 typename C::const_iterator* /* const_it */ = NULL) { 938 return 0; 939 } 940 941 typedef char IsNotContainer; 942 template <class C> 943 IsNotContainer IsContainerTest(long /* dummy */) { return '\0'; } 944 945 // EnableIf<condition>::type is void when 'Cond' is true, and 946 // undefined when 'Cond' is false. To use SFINAE to make a function 947 // overload only apply when a particular expression is true, add 948 // "typename EnableIf<expression>::type* = 0" as the last parameter. 949 template<bool> struct EnableIf; 950 template<> struct EnableIf<true> { typedef void type; }; // NOLINT 951 952 // Utilities for native arrays. 953 954 // ArrayEq() compares two k-dimensional native arrays using the 955 // elements' operator==, where k can be any integer >= 0. When k is 956 // 0, ArrayEq() degenerates into comparing a single pair of values. 957 958 template <typename T, typename U> 959 bool ArrayEq(const T* lhs, size_t size, const U* rhs); 960 961 // This generic version is used when k is 0. 962 template <typename T, typename U> 963 inline bool ArrayEq(const T& lhs, const U& rhs) { return lhs == rhs; } 964 965 // This overload is used when k >= 1. 966 template <typename T, typename U, size_t N> 967 inline bool ArrayEq(const T(&lhs)[N], const U(&rhs)[N]) { 968 return internal::ArrayEq(lhs, N, rhs); 969 } 970 971 // This helper reduces code bloat. If we instead put its logic inside 972 // the previous ArrayEq() function, arrays with different sizes would 973 // lead to different copies of the template code. 974 template <typename T, typename U> 975 bool ArrayEq(const T* lhs, size_t size, const U* rhs) { 976 for (size_t i = 0; i != size; i++) { 977 if (!internal::ArrayEq(lhs[i], rhs[i])) 978 return false; 979 } 980 return true; 981 } 982 983 // Finds the first element in the iterator range [begin, end) that 984 // equals elem. Element may be a native array type itself. 985 template <typename Iter, typename Element> 986 Iter ArrayAwareFind(Iter begin, Iter end, const Element& elem) { 987 for (Iter it = begin; it != end; ++it) { 988 if (internal::ArrayEq(*it, elem)) 989 return it; 990 } 991 return end; 992 } 993 994 // CopyArray() copies a k-dimensional native array using the elements' 995 // operator=, where k can be any integer >= 0. When k is 0, 996 // CopyArray() degenerates into copying a single value. 997 998 template <typename T, typename U> 999 void CopyArray(const T* from, size_t size, U* to); 1000 1001 // This generic version is used when k is 0. 1002 template <typename T, typename U> 1003 inline void CopyArray(const T& from, U* to) { *to = from; } 1004 1005 // This overload is used when k >= 1. 1006 template <typename T, typename U, size_t N> 1007 inline void CopyArray(const T(&from)[N], U(*to)[N]) { 1008 internal::CopyArray(from, N, *to); 1009 } 1010 1011 // This helper reduces code bloat. If we instead put its logic inside 1012 // the previous CopyArray() function, arrays with different sizes 1013 // would lead to different copies of the template code. 1014 template <typename T, typename U> 1015 void CopyArray(const T* from, size_t size, U* to) { 1016 for (size_t i = 0; i != size; i++) { 1017 internal::CopyArray(from[i], to + i); 1018 } 1019 } 1020 1021 // The relation between an NativeArray object (see below) and the 1022 // native array it represents. 1023 enum RelationToSource { 1024 kReference, // The NativeArray references the native array. 1025 kCopy // The NativeArray makes a copy of the native array and 1026 // owns the copy. 1027 }; 1028 1029 // Adapts a native array to a read-only STL-style container. Instead 1030 // of the complete STL container concept, this adaptor only implements 1031 // members useful for Google Mock's container matchers. New members 1032 // should be added as needed. To simplify the implementation, we only 1033 // support Element being a raw type (i.e. having no top-level const or 1034 // reference modifier). It's the client's responsibility to satisfy 1035 // this requirement. Element can be an array type itself (hence 1036 // multi-dimensional arrays are supported). 1037 template <typename Element> 1038 class NativeArray { 1039 public: 1040 // STL-style container typedefs. 1041 typedef Element value_type; 1042 typedef Element* iterator; 1043 typedef const Element* const_iterator; 1044 1045 // Constructs from a native array. 1046 NativeArray(const Element* array, size_t count, RelationToSource relation) { 1047 Init(array, count, relation); 1048 } 1049 1050 // Copy constructor. 1051 NativeArray(const NativeArray& rhs) { 1052 Init(rhs.array_, rhs.size_, rhs.relation_to_source_); 1053 } 1054 1055 ~NativeArray() { 1056 // Ensures that the user doesn't instantiate NativeArray with a 1057 // const or reference type. 1058 static_cast<void>(StaticAssertTypeEqHelper<Element, 1059 GTEST_REMOVE_REFERENCE_AND_CONST_(Element)>()); 1060 if (relation_to_source_ == kCopy) 1061 delete[] array_; 1062 } 1063 1064 // STL-style container methods. 1065 size_t size() const { return size_; } 1066 const_iterator begin() const { return array_; } 1067 const_iterator end() const { return array_ + size_; } 1068 bool operator==(const NativeArray& rhs) const { 1069 return size() == rhs.size() && 1070 ArrayEq(begin(), size(), rhs.begin()); 1071 } 1072 1073 private: 1074 // Initializes this object; makes a copy of the input array if 1075 // 'relation' is kCopy. 1076 void Init(const Element* array, size_t a_size, RelationToSource relation) { 1077 if (relation == kReference) { 1078 array_ = array; 1079 } else { 1080 Element* const copy = new Element[a_size]; 1081 CopyArray(array, a_size, copy); 1082 array_ = copy; 1083 } 1084 size_ = a_size; 1085 relation_to_source_ = relation; 1086 } 1087 1088 const Element* array_; 1089 size_t size_; 1090 RelationToSource relation_to_source_; 1091 1092 GTEST_DISALLOW_ASSIGN_(NativeArray); 1093 }; 1094 1095 } // namespace internal 1096 } // namespace testing 1097 1098 #define GTEST_MESSAGE_AT_(file, line, message, result_type) \ 1099 ::testing::internal::AssertHelper(result_type, file, line, message) \ 1100 = ::testing::Message() 1101 1102 #define GTEST_MESSAGE_(message, result_type) \ 1103 GTEST_MESSAGE_AT_(__FILE__, __LINE__, message, result_type) 1104 1105 #define GTEST_FATAL_FAILURE_(message) \ 1106 return GTEST_MESSAGE_(message, ::testing::TestPartResult::kFatalFailure) 1107 1108 #define GTEST_NONFATAL_FAILURE_(message) \ 1109 GTEST_MESSAGE_(message, ::testing::TestPartResult::kNonFatalFailure) 1110 1111 #define GTEST_SUCCESS_(message) \ 1112 GTEST_MESSAGE_(message, ::testing::TestPartResult::kSuccess) 1113 1114 // Suppresses MSVC warnings 4072 (unreachable code) for the code following 1115 // statement if it returns or throws (or doesn't return or throw in some 1116 // situations). 1117 #define GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement) \ 1118 if (::testing::internal::AlwaysTrue()) { statement; } 1119 1120 #define GTEST_TEST_THROW_(statement, expected_exception, fail) \ 1121 GTEST_AMBIGUOUS_ELSE_BLOCKER_ \ 1122 if (::testing::internal::ConstCharPtr gtest_msg = "") { \ 1123 bool gtest_caught_expected = false; \ 1124 try { \ 1125 GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement); \ 1126 } \ 1127 catch (expected_exception const&) { \ 1128 gtest_caught_expected = true; \ 1129 } \ 1130 catch (...) { \ 1131 gtest_msg.value = \ 1132 "Expected: " #statement " throws an exception of type " \ 1133 #expected_exception ".\n Actual: it throws a different type."; \ 1134 goto GTEST_CONCAT_TOKEN_(gtest_label_testthrow_, __LINE__); \ 1135 } \ 1136 if (!gtest_caught_expected) { \ 1137 gtest_msg.value = \ 1138 "Expected: " #statement " throws an exception of type " \ 1139 #expected_exception ".\n Actual: it throws nothing."; \ 1140 goto GTEST_CONCAT_TOKEN_(gtest_label_testthrow_, __LINE__); \ 1141 } \ 1142 } else \ 1143 GTEST_CONCAT_TOKEN_(gtest_label_testthrow_, __LINE__): \ 1144 fail(gtest_msg.value) 1145 1146 #define GTEST_TEST_NO_THROW_(statement, fail) \ 1147 GTEST_AMBIGUOUS_ELSE_BLOCKER_ \ 1148 if (::testing::internal::AlwaysTrue()) { \ 1149 try { \ 1150 GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement); \ 1151 } \ 1152 catch (...) { \ 1153 goto GTEST_CONCAT_TOKEN_(gtest_label_testnothrow_, __LINE__); \ 1154 } \ 1155 } else \ 1156 GTEST_CONCAT_TOKEN_(gtest_label_testnothrow_, __LINE__): \ 1157 fail("Expected: " #statement " doesn't throw an exception.\n" \ 1158 " Actual: it throws.") 1159 1160 #define GTEST_TEST_ANY_THROW_(statement, fail) \ 1161 GTEST_AMBIGUOUS_ELSE_BLOCKER_ \ 1162 if (::testing::internal::AlwaysTrue()) { \ 1163 bool gtest_caught_any = false; \ 1164 try { \ 1165 GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement); \ 1166 } \ 1167 catch (...) { \ 1168 gtest_caught_any = true; \ 1169 } \ 1170 if (!gtest_caught_any) { \ 1171 goto GTEST_CONCAT_TOKEN_(gtest_label_testanythrow_, __LINE__); \ 1172 } \ 1173 } else \ 1174 GTEST_CONCAT_TOKEN_(gtest_label_testanythrow_, __LINE__): \ 1175 fail("Expected: " #statement " throws an exception.\n" \ 1176 " Actual: it doesn't.") 1177 1178 1179 // Implements Boolean test assertions such as EXPECT_TRUE. expression can be 1180 // either a boolean expression or an AssertionResult. text is a textual 1181 // represenation of expression as it was passed into the EXPECT_TRUE. 1182 #define GTEST_TEST_BOOLEAN_(expression, text, actual, expected, fail) \ 1183 GTEST_AMBIGUOUS_ELSE_BLOCKER_ \ 1184 if (const ::testing::AssertionResult gtest_ar_ = \ 1185 ::testing::AssertionResult(expression)) \ 1186 ; \ 1187 else \ 1188 fail(::testing::internal::GetBoolAssertionFailureMessage(\ 1189 gtest_ar_, text, #actual, #expected).c_str()) 1190 1191 #define GTEST_TEST_NO_FATAL_FAILURE_(statement, fail) \ 1192 GTEST_AMBIGUOUS_ELSE_BLOCKER_ \ 1193 if (::testing::internal::AlwaysTrue()) { \ 1194 ::testing::internal::HasNewFatalFailureHelper gtest_fatal_failure_checker; \ 1195 GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement); \ 1196 if (gtest_fatal_failure_checker.has_new_fatal_failure()) { \ 1197 goto GTEST_CONCAT_TOKEN_(gtest_label_testnofatal_, __LINE__); \ 1198 } \ 1199 } else \ 1200 GTEST_CONCAT_TOKEN_(gtest_label_testnofatal_, __LINE__): \ 1201 fail("Expected: " #statement " doesn't generate new fatal " \ 1202 "failures in the current thread.\n" \ 1203 " Actual: it does.") 1204 1205 // Expands to the name of the class that implements the given test. 1206 #define GTEST_TEST_CLASS_NAME_(test_case_name, test_name) \ 1207 test_case_name##_##test_name##_Test 1208 1209 // Helper macro for defining tests. 1210 #define GTEST_TEST_(test_case_name, test_name, parent_class, parent_id)\ 1211 class GTEST_TEST_CLASS_NAME_(test_case_name, test_name) : public parent_class {\ 1212 public:\ 1213 GTEST_TEST_CLASS_NAME_(test_case_name, test_name)() {}\ 1214 private:\ 1215 virtual void TestBody();\ 1216 static ::testing::TestInfo* const test_info_ GTEST_ATTRIBUTE_UNUSED_;\ 1217 GTEST_DISALLOW_COPY_AND_ASSIGN_(\ 1218 GTEST_TEST_CLASS_NAME_(test_case_name, test_name));\ 1219 };\ 1220 \ 1221 ::testing::TestInfo* const GTEST_TEST_CLASS_NAME_(test_case_name, test_name)\ 1222 ::test_info_ =\ 1223 ::testing::internal::MakeAndRegisterTestInfo(\ 1224 #test_case_name, #test_name, NULL, NULL, \ 1225 (parent_id), \ 1226 parent_class::SetUpTestCase, \ 1227 parent_class::TearDownTestCase, \ 1228 new ::testing::internal::TestFactoryImpl<\ 1229 GTEST_TEST_CLASS_NAME_(test_case_name, test_name)>);\ 1230 void GTEST_TEST_CLASS_NAME_(test_case_name, test_name)::TestBody() 1231 1232 #endif // GTEST_INCLUDE_GTEST_INTERNAL_GTEST_INTERNAL_H_ 1233