1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
|
// Copyright 2005, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Authors: wan@google.com (Zhanyong Wan), eefacm@gmail.com (Sean Mcafee)
//
// The Google C++ Testing Framework (Google Test)
//
// This header file declares functions and macros used internally by
// Google Test. They are subject to change without notice.
#ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_INTERNAL_H_
#define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_INTERNAL_H_
#include <gtest/internal/gtest-port.h>
#if GTEST_OS_LINUX
#include <stdlib.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
#endif // GTEST_OS_LINUX
#include <ctype.h>
#include <string.h>
#include <iomanip>
#include <limits>
#include <set>
#include <gtest/internal/gtest-string.h>
#include <gtest/internal/gtest-filepath.h>
#include <gtest/internal/gtest-type-util.h>
// Due to C++ preprocessor weirdness, we need double indirection to
// concatenate two tokens when one of them is __LINE__. Writing
//
// foo ## __LINE__
//
// will result in the token foo__LINE__, instead of foo followed by
// the current line number. For more details, see
// http://www.parashift.com/c++-faq-lite/misc-technical-issues.html#faq-39.6
#define GTEST_CONCAT_TOKEN_(foo, bar) GTEST_CONCAT_TOKEN_IMPL_(foo, bar)
#define GTEST_CONCAT_TOKEN_IMPL_(foo, bar) foo ## bar
// Google Test defines the testing::Message class to allow construction of
// test messages via the << operator. The idea is that anything
// streamable to std::ostream can be streamed to a testing::Message.
// This allows a user to use his own types in Google Test assertions by
// overloading the << operator.
//
// util/gtl/stl_logging-inl.h overloads << for STL containers. These
// overloads cannot be defined in the std namespace, as that will be
// undefined behavior. Therefore, they are defined in the global
// namespace instead.
//
// C++'s symbol lookup rule (i.e. Koenig lookup) says that these
// overloads are visible in either the std namespace or the global
// namespace, but not other namespaces, including the testing
// namespace which Google Test's Message class is in.
//
// To allow STL containers (and other types that has a << operator
// defined in the global namespace) to be used in Google Test assertions,
// testing::Message must access the custom << operator from the global
// namespace. Hence this helper function.
//
// Note: Jeffrey Yasskin suggested an alternative fix by "using
// ::operator<<;" in the definition of Message's operator<<. That fix
// doesn't require a helper function, but unfortunately doesn't
// compile with MSVC.
template <typename T>
inline void GTestStreamToHelper(std::ostream* os, const T& val) {
*os << val;
}
namespace testing {
// Forward declaration of classes.
class AssertionResult; // Result of an assertion.
class Message; // Represents a failure message.
class Test; // Represents a test.
class TestInfo; // Information about a test.
class TestPartResult; // Result of a test part.
class UnitTest; // A collection of test cases.
namespace internal {
struct TraceInfo; // Information about a trace point.
class ScopedTrace; // Implements scoped trace.
class TestInfoImpl; // Opaque implementation of TestInfo
class UnitTestImpl; // Opaque implementation of UnitTest
template <typename E> class Vector; // A generic vector.
// How many times InitGoogleTest() has been called.
extern int g_init_gtest_count;
// The text used in failure messages to indicate the start of the
// stack trace.
extern const char kStackTraceMarker[];
// A secret type that Google Test users don't know about. It has no
// definition on purpose. Therefore it's impossible to create a
// Secret object, which is what we want.
class Secret;
// Two overloaded helpers for checking at compile time whether an
// expression is a null pointer literal (i.e. NULL or any 0-valued
// compile-time integral constant). Their return values have
// different sizes, so we can use sizeof() to test which version is
// picked by the compiler. These helpers have no implementations, as
// we only need their signatures.
//
// Given IsNullLiteralHelper(x), the compiler will pick the first
// version if x can be implicitly converted to Secret*, and pick the
// second version otherwise. Since Secret is a secret and incomplete
// type, the only expression a user can write that has type Secret* is
// a null pointer literal. Therefore, we know that x is a null
// pointer literal if and only if the first version is picked by the
// compiler.
char IsNullLiteralHelper(Secret* p);
char (&IsNullLiteralHelper(...))[2]; // NOLINT
// A compile-time bool constant that is true if and only if x is a
// null pointer literal (i.e. NULL or any 0-valued compile-time
// integral constant).
#ifdef GTEST_ELLIPSIS_NEEDS_POD_
// We lose support for NULL detection where the compiler doesn't like
// passing non-POD classes through ellipsis (...).
#define GTEST_IS_NULL_LITERAL_(x) false
#else
#define GTEST_IS_NULL_LITERAL_(x) \
(sizeof(::testing::internal::IsNullLiteralHelper(x)) == 1)
#endif // GTEST_ELLIPSIS_NEEDS_POD_
// Appends the user-supplied message to the Google-Test-generated message.
String AppendUserMessage(const String& gtest_msg,
const Message& user_msg);
// A helper class for creating scoped traces in user programs.
class ScopedTrace {
public:
// The c'tor pushes the given source file location and message onto
// a trace stack maintained by Google Test.
ScopedTrace(const char* file, int line, const Message& message);
// The d'tor pops the info pushed by the c'tor.
//
// Note that the d'tor is not virtual in order to be efficient.
// Don't inherit from ScopedTrace!
~ScopedTrace();
private:
GTEST_DISALLOW_COPY_AND_ASSIGN_(ScopedTrace);
} GTEST_ATTRIBUTE_UNUSED_; // A ScopedTrace object does its job in its
// c'tor and d'tor. Therefore it doesn't
// need to be used otherwise.
// Converts a streamable value to a String. A NULL pointer is
// converted to "(null)". When the input value is a ::string,
// ::std::string, ::wstring, or ::std::wstring object, each NUL
// character in it is replaced with "\\0".
// Declared here but defined in gtest.h, so that it has access
// to the definition of the Message class, required by the ARM
// compiler.
template <typename T>
String StreamableToString(const T& streamable);
// Formats a value to be used in a failure message.
#ifdef GTEST_NEEDS_IS_POINTER_
// These are needed as the Nokia Symbian and IBM XL C/C++ compilers
// cannot decide between const T& and const T* in a function template.
// These compilers _can_ decide between class template specializations
// for T and T*, so a tr1::type_traits-like is_pointer works, and we
// can overload on that.
// This overload makes sure that all pointers (including
// those to char or wchar_t) are printed as raw pointers.
template <typename T>
inline String FormatValueForFailureMessage(internal::true_type /*dummy*/,
T* pointer) {
return StreamableToString(static_cast<const void*>(pointer));
}
template <typename T>
inline String FormatValueForFailureMessage(internal::false_type /*dummy*/,
const T& value) {
return StreamableToString(value);
}
template <typename T>
inline String FormatForFailureMessage(const T& value) {
return FormatValueForFailureMessage(
typename internal::is_pointer<T>::type(), value);
}
#else
// These are needed as the above solution using is_pointer has the
// limitation that T cannot be a type without external linkage, when
// compiled using MSVC.
template <typename T>
inline String FormatForFailureMessage(const T& value) {
return StreamableToString(value);
}
// This overload makes sure that all pointers (including
// those to char or wchar_t) are printed as raw pointers.
template <typename T>
inline String FormatForFailureMessage(T* pointer) {
return StreamableToString(static_cast<const void*>(pointer));
}
#endif // GTEST_NEEDS_IS_POINTER_
// These overloaded versions handle narrow and wide characters.
String FormatForFailureMessage(char ch);
String FormatForFailureMessage(wchar_t wchar);
// When this operand is a const char* or char*, and the other operand
// is a ::std::string or ::string, we print this operand as a C string
// rather than a pointer. We do the same for wide strings.
// This internal macro is used to avoid duplicated code.
#define GTEST_FORMAT_IMPL_(operand2_type, operand1_printer)\
inline String FormatForComparisonFailureMessage(\
operand2_type::value_type* str, const operand2_type& /*operand2*/) {\
return operand1_printer(str);\
}\
inline String FormatForComparisonFailureMessage(\
const operand2_type::value_type* str, const operand2_type& /*operand2*/) {\
return operand1_printer(str);\
}
GTEST_FORMAT_IMPL_(::std::string, String::ShowCStringQuoted)
#if GTEST_HAS_STD_WSTRING
GTEST_FORMAT_IMPL_(::std::wstring, String::ShowWideCStringQuoted)
#endif // GTEST_HAS_STD_WSTRING
#if GTEST_HAS_GLOBAL_STRING
GTEST_FORMAT_IMPL_(::string, String::ShowCStringQuoted)
#endif // GTEST_HAS_GLOBAL_STRING
#if GTEST_HAS_GLOBAL_WSTRING
GTEST_FORMAT_IMPL_(::wstring, String::ShowWideCStringQuoted)
#endif // GTEST_HAS_GLOBAL_WSTRING
#undef GTEST_FORMAT_IMPL_
// Constructs and returns the message for an equality assertion
// (e.g. ASSERT_EQ, EXPECT_STREQ, etc) failure.
//
// The first four parameters are the expressions used in the assertion
// and their values, as strings. For example, for ASSERT_EQ(foo, bar)
// where foo is 5 and bar is 6, we have:
//
// expected_expression: "foo"
// actual_expression: "bar"
// expected_value: "5"
// actual_value: "6"
//
// The ignoring_case parameter is true iff the assertion is a
// *_STRCASEEQ*. When it's true, the string " (ignoring case)" will
// be inserted into the message.
AssertionResult EqFailure(const char* expected_expression,
const char* actual_expression,
const String& expected_value,
const String& actual_value,
bool ignoring_case);
// Constructs a failure message for Boolean assertions such as EXPECT_TRUE.
String GetBoolAssertionFailureMessage(const AssertionResult& assertion_result,
const char* expression_text,
const char* actual_predicate_value,
const char* expected_predicate_value);
// This template class represents an IEEE floating-point number
// (either single-precision or double-precision, depending on the
// template parameters).
//
// The purpose of this class is to do more sophisticated number
// comparison. (Due to round-off error, etc, it's very unlikely that
// two floating-points will be equal exactly. Hence a naive
// comparison by the == operation often doesn't work.)
//
// Format of IEEE floating-point:
//
// The most-significant bit being the leftmost, an IEEE
// floating-point looks like
//
// sign_bit exponent_bits fraction_bits
//
// Here, sign_bit is a single bit that designates the sign of the
// number.
//
// For float, there are 8 exponent bits and 23 fraction bits.
//
// For double, there are 11 exponent bits and 52 fraction bits.
//
// More details can be found at
// http://en.wikipedia.org/wiki/IEEE_floating-point_standard.
//
// Template parameter:
//
// RawType: the raw floating-point type (either float or double)
template <typename RawType>
class FloatingPoint {
public:
// Defines the unsigned integer type that has the same size as the
// floating point number.
typedef typename TypeWithSize<sizeof(RawType)>::UInt Bits;
// Constants.
// # of bits in a number.
static const size_t kBitCount = 8*sizeof(RawType);
// # of fraction bits in a number.
static const size_t kFractionBitCount =
std::numeric_limits<RawType>::digits - 1;
// # of exponent bits in a number.
static const size_t kExponentBitCount = kBitCount - 1 - kFractionBitCount;
// The mask for the sign bit.
static const Bits kSignBitMask = static_cast<Bits>(1) << (kBitCount - 1);
// The mask for the fraction bits.
static const Bits kFractionBitMask =
~static_cast<Bits>(0) >> (kExponentBitCount + 1);
// The mask for the exponent bits.
static const Bits kExponentBitMask = ~(kSignBitMask | kFractionBitMask);
// How many ULP's (Units in the Last Place) we want to tolerate when
// comparing two numbers. The larger the value, the more error we
// allow. A 0 value means that two numbers must be exactly the same
// to be considered equal.
//
// The maximum error of a single floating-point operation is 0.5
// units in the last place. On Intel CPU's, all floating-point
// calculations are done with 80-bit precision, while double has 64
// bits. Therefore, 4 should be enough for ordinary use.
//
// See the following article for more details on ULP:
// http://www.cygnus-software.com/papers/comparingfloats/comparingfloats.htm.
static const size_t kMaxUlps = 4;
// Constructs a FloatingPoint from a raw floating-point number.
//
// On an Intel CPU, passing a non-normalized NAN (Not a Number)
// around may change its bits, although the new value is guaranteed
// to be also a NAN. Therefore, don't expect this constructor to
// preserve the bits in x when x is a NAN.
explicit FloatingPoint(const RawType& x) { u_.value_ = x; }
// Static methods
// Reinterprets a bit pattern as a floating-point number.
//
// This function is needed to test the AlmostEquals() method.
static RawType ReinterpretBits(const Bits bits) {
FloatingPoint fp(0);
fp.u_.bits_ = bits;
return fp.u_.value_;
}
// Returns the floating-point number that represent positive infinity.
static RawType Infinity() {
return ReinterpretBits(kExponentBitMask);
}
// Non-static methods
// Returns the bits that represents this number.
const Bits &bits() const { return u_.bits_; }
// Returns the exponent bits of this number.
Bits exponent_bits() const { return kExponentBitMask & u_.bits_; }
// Returns the fraction bits of this number.
Bits fraction_bits() const { return kFractionBitMask & u_.bits_; }
// Returns the sign bit of this number.
Bits sign_bit() const { return kSignBitMask & u_.bits_; }
// Returns true iff this is NAN (not a number).
bool is_nan() const {
// It's a NAN if the exponent bits are all ones and the fraction
// bits are not entirely zeros.
return (exponent_bits() == kExponentBitMask) && (fraction_bits() != 0);
}
// Returns true iff this number is at most kMaxUlps ULP's away from
// rhs. In particular, this function:
//
// - returns false if either number is (or both are) NAN.
// - treats really large numbers as almost equal to infinity.
// - thinks +0.0 and -0.0 are 0 DLP's apart.
bool AlmostEquals(const FloatingPoint& rhs) const {
// The IEEE standard says that any comparison operation involving
// a NAN must return false.
if (is_nan() || rhs.is_nan()) return false;
return DistanceBetweenSignAndMagnitudeNumbers(u_.bits_, rhs.u_.bits_)
<= kMaxUlps;
}
private:
// The data type used to store the actual floating-point number.
union FloatingPointUnion {
RawType value_; // The raw floating-point number.
Bits bits_; // The bits that represent the number.
};
// Converts an integer from the sign-and-magnitude representation to
// the biased representation. More precisely, let N be 2 to the
// power of (kBitCount - 1), an integer x is represented by the
// unsigned number x + N.
//
// For instance,
//
// -N + 1 (the most negative number representable using
// sign-and-magnitude) is represented by 1;
// 0 is represented by N; and
// N - 1 (the biggest number representable using
// sign-and-magnitude) is represented by 2N - 1.
//
// Read http://en.wikipedia.org/wiki/Signed_number_representations
// for more details on signed number representations.
static Bits SignAndMagnitudeToBiased(const Bits &sam) {
if (kSignBitMask & sam) {
// sam represents a negative number.
return ~sam + 1;
} else {
// sam represents a positive number.
return kSignBitMask | sam;
}
}
// Given two numbers in the sign-and-magnitude representation,
// returns the distance between them as an unsigned number.
static Bits DistanceBetweenSignAndMagnitudeNumbers(const Bits &sam1,
const Bits &sam2) {
const Bits biased1 = SignAndMagnitudeToBiased(sam1);
const Bits biased2 = SignAndMagnitudeToBiased(sam2);
return (biased1 >= biased2) ? (biased1 - biased2) : (biased2 - biased1);
}
FloatingPointUnion u_;
};
// Typedefs the instances of the FloatingPoint template class that we
// care to use.
typedef FloatingPoint<float> Float;
typedef FloatingPoint<double> Double;
// In order to catch the mistake of putting tests that use different
// test fixture classes in the same test case, we need to assign
// unique IDs to fixture classes and compare them. The TypeId type is
// used to hold such IDs. The user should treat TypeId as an opaque
// type: the only operation allowed on TypeId values is to compare
// them for equality using the == operator.
typedef const void* TypeId;
template <typename T>
class TypeIdHelper {
public:
// dummy_ must not have a const type. Otherwise an overly eager
// compiler (e.g. MSVC 7.1 & 8.0) may try to merge
// TypeIdHelper<T>::dummy_ for different Ts as an "optimization".
static bool dummy_;
};
template <typename T>
bool TypeIdHelper<T>::dummy_ = false;
// GetTypeId<T>() returns the ID of type T. Different values will be
// returned for different types. Calling the function twice with the
// same type argument is guaranteed to return the same ID.
template <typename T>
TypeId GetTypeId() {
// The compiler is required to allocate a different
// TypeIdHelper<T>::dummy_ variable for each T used to instantiate
// the template. Therefore, the address of dummy_ is guaranteed to
// be unique.
return &(TypeIdHelper<T>::dummy_);
}
// Returns the type ID of ::testing::Test. Always call this instead
// of GetTypeId< ::testing::Test>() to get the type ID of
// ::testing::Test, as the latter may give the wrong result due to a
// suspected linker bug when compiling Google Test as a Mac OS X
// framework.
TypeId GetTestTypeId();
// Defines the abstract factory interface that creates instances
// of a Test object.
class TestFactoryBase {
public:
virtual ~TestFactoryBase() {}
// Creates a test instance to run. The instance is both created and destroyed
// within TestInfoImpl::Run()
virtual Test* CreateTest() = 0;
protected:
TestFactoryBase() {}
private:
GTEST_DISALLOW_COPY_AND_ASSIGN_(TestFactoryBase);
};
// This class provides implementation of TeastFactoryBase interface.
// It is used in TEST and TEST_F macros.
template <class TestClass>
class TestFactoryImpl : public TestFactoryBase {
public:
virtual Test* CreateTest() { return new TestClass; }
};
#if GTEST_OS_WINDOWS
// Predicate-formatters for implementing the HRESULT checking macros
// {ASSERT|EXPECT}_HRESULT_{SUCCEEDED|FAILED}
// We pass a long instead of HRESULT to avoid causing an
// include dependency for the HRESULT type.
AssertionResult IsHRESULTSuccess(const char* expr, long hr); // NOLINT
AssertionResult IsHRESULTFailure(const char* expr, long hr); // NOLINT
#endif // GTEST_OS_WINDOWS
// Formats a source file path and a line number as they would appear
// in a compiler error message.
inline String FormatFileLocation(const char* file, int line) {
const char* const file_name = file == NULL ? "unknown file" : file;
if (line < 0) {
return String::Format("%s:", file_name);
}
#ifdef _MSC_VER
return String::Format("%s(%d):", file_name, line);
#else
return String::Format("%s:%d:", file_name, line);
#endif // _MSC_VER
}
// Types of SetUpTestCase() and TearDownTestCase() functions.
typedef void (*SetUpTestCaseFunc)();
typedef void (*TearDownTestCaseFunc)();
// Creates a new TestInfo object and registers it with Google Test;
// returns the created object.
//
// Arguments:
//
// test_case_name: name of the test case
// name: name of the test
// test_case_comment: a comment on the test case that will be included in
// the test output
// comment: a comment on the test that will be included in the
// test output
// fixture_class_id: ID of the test fixture class
// set_up_tc: pointer to the function that sets up the test case
// tear_down_tc: pointer to the function that tears down the test case
// factory: pointer to the factory that creates a test object.
// The newly created TestInfo instance will assume
// ownership of the factory object.
TestInfo* MakeAndRegisterTestInfo(
const char* test_case_name, const char* name,
const char* test_case_comment, const char* comment,
TypeId fixture_class_id,
SetUpTestCaseFunc set_up_tc,
TearDownTestCaseFunc tear_down_tc,
TestFactoryBase* factory);
// If *pstr starts with the given prefix, modifies *pstr to be right
// past the prefix and returns true; otherwise leaves *pstr unchanged
// and returns false. None of pstr, *pstr, and prefix can be NULL.
bool SkipPrefix(const char* prefix, const char** pstr);
#if GTEST_HAS_TYPED_TEST || GTEST_HAS_TYPED_TEST_P
// State of the definition of a type-parameterized test case.
class TypedTestCasePState {
public:
TypedTestCasePState() : registered_(false) {}
// Adds the given test name to defined_test_names_ and return true
// if the test case hasn't been registered; otherwise aborts the
// program.
bool AddTestName(const char* file, int line, const char* case_name,
const char* test_name) {
if (registered_) {
fprintf(stderr, "%s Test %s must be defined before "
"REGISTER_TYPED_TEST_CASE_P(%s, ...).\n",
FormatFileLocation(file, line).c_str(), test_name, case_name);
fflush(stderr);
posix::Abort();
}
defined_test_names_.insert(test_name);
return true;
}
// Verifies that registered_tests match the test names in
// defined_test_names_; returns registered_tests if successful, or
// aborts the program otherwise.
const char* VerifyRegisteredTestNames(
const char* file, int line, const char* registered_tests);
private:
bool registered_;
::std::set<const char*> defined_test_names_;
};
// Skips to the first non-space char after the first comma in 'str';
// returns NULL if no comma is found in 'str'.
inline const char* SkipComma(const char* str) {
const char* comma = strchr(str, ',');
if (comma == NULL) {
return NULL;
}
while (isspace(*(++comma))) {}
return comma;
}
// Returns the prefix of 'str' before the first comma in it; returns
// the entire string if it contains no comma.
inline String GetPrefixUntilComma(const char* str) {
const char* comma = strchr(str, ',');
return comma == NULL ? String(str) : String(str, comma - str);
}
// TypeParameterizedTest<Fixture, TestSel, Types>::Register()
// registers a list of type-parameterized tests with Google Test. The
// return value is insignificant - we just need to return something
// such that we can call this function in a namespace scope.
//
// Implementation note: The GTEST_TEMPLATE_ macro declares a template
// template parameter. It's defined in gtest-type-util.h.
template <GTEST_TEMPLATE_ Fixture, class TestSel, typename Types>
class TypeParameterizedTest {
public:
// 'index' is the index of the test in the type list 'Types'
// specified in INSTANTIATE_TYPED_TEST_CASE_P(Prefix, TestCase,
// Types). Valid values for 'index' are [0, N - 1] where N is the
// length of Types.
static bool Register(const char* prefix, const char* case_name,
const char* test_names, int index) {
typedef typename Types::Head Type;
typedef Fixture<Type> FixtureClass;
typedef typename GTEST_BIND_(TestSel, Type) TestClass;
// First, registers the first type-parameterized test in the type
// list.
MakeAndRegisterTestInfo(
String::Format("%s%s%s/%d", prefix, prefix[0] == '\0' ? "" : "/",
case_name, index).c_str(),
GetPrefixUntilComma(test_names).c_str(),
String::Format("TypeParam = %s", GetTypeName<Type>().c_str()).c_str(),
"",
GetTypeId<FixtureClass>(),
TestClass::SetUpTestCase,
TestClass::TearDownTestCase,
new TestFactoryImpl<TestClass>);
// Next, recurses (at compile time) with the tail of the type list.
return TypeParameterizedTest<Fixture, TestSel, typename Types::Tail>
::Register(prefix, case_name, test_names, index + 1);
}
};
// The base case for the compile time recursion.
template <GTEST_TEMPLATE_ Fixture, class TestSel>
class TypeParameterizedTest<Fixture, TestSel, Types0> {
public:
static bool Register(const char* /*prefix*/, const char* /*case_name*/,
const char* /*test_names*/, int /*index*/) {
return true;
}
};
// TypeParameterizedTestCase<Fixture, Tests, Types>::Register()
// registers *all combinations* of 'Tests' and 'Types' with Google
// Test. The return value is insignificant - we just need to return
// something such that we can call this function in a namespace scope.
template <GTEST_TEMPLATE_ Fixture, typename Tests, typename Types>
class TypeParameterizedTestCase {
public:
static bool Register(const char* prefix, const char* case_name,
const char* test_names) {
typedef typename Tests::Head Head;
// First, register the first test in 'Test' for each type in 'Types'.
TypeParameterizedTest<Fixture, Head, Types>::Register(
prefix, case_name, test_names, 0);
// Next, recurses (at compile time) with the tail of the test list.
return TypeParameterizedTestCase<Fixture, typename Tests::Tail, Types>
::Register(prefix, case_name, SkipComma(test_names));
}
};
// The base case for the compile time recursion.
template <GTEST_TEMPLATE_ Fixture, typename Types>
class TypeParameterizedTestCase<Fixture, Templates0, Types> {
public:
static bool Register(const char* /*prefix*/, const char* /*case_name*/,
const char* /*test_names*/) {
return true;
}
};
#endif // GTEST_HAS_TYPED_TEST || GTEST_HAS_TYPED_TEST_P
// Returns the current OS stack trace as a String.
//
// The maximum number of stack frames to be included is specified by
// the gtest_stack_trace_depth flag. The skip_count parameter
// specifies the number of top frames to be skipped, which doesn't
// count against the number of frames to be included.
//
// For example, if Foo() calls Bar(), which in turn calls
// GetCurrentOsStackTraceExceptTop(..., 1), Foo() will be included in
// the trace but Bar() and GetCurrentOsStackTraceExceptTop() won't.
String GetCurrentOsStackTraceExceptTop(UnitTest* unit_test, int skip_count);
// Helpers for suppressing warnings on unreachable code or constant
// condition.
// Always returns true.
bool AlwaysTrue();
// Always returns false.
inline bool AlwaysFalse() { return !AlwaysTrue(); }
// A simple Linear Congruential Generator for generating random
// numbers with a uniform distribution. Unlike rand() and srand(), it
// doesn't use global state (and therefore can't interfere with user
// code). Unlike rand_r(), it's portable. An LCG isn't very random,
// but it's good enough for our purposes.
class Random {
public:
static const UInt32 kMaxRange = 1u << 31;
explicit Random(UInt32 seed) : state_(seed) {}
void Reseed(UInt32 seed) { state_ = seed; }
// Generates a random number from [0, range). Crashes if 'range' is
// 0 or greater than kMaxRange.
UInt32 Generate(UInt32 range);
private:
UInt32 state_;
GTEST_DISALLOW_COPY_AND_ASSIGN_(Random);
};
} // namespace internal
} // namespace testing
#define GTEST_MESSAGE_(message, result_type) \
::testing::internal::AssertHelper(result_type, __FILE__, __LINE__, message) \
= ::testing::Message()
#define GTEST_FATAL_FAILURE_(message) \
return GTEST_MESSAGE_(message, ::testing::TestPartResult::kFatalFailure)
#define GTEST_NONFATAL_FAILURE_(message) \
GTEST_MESSAGE_(message, ::testing::TestPartResult::kNonFatalFailure)
#define GTEST_SUCCESS_(message) \
GTEST_MESSAGE_(message, ::testing::TestPartResult::kSuccess)
// Suppresses MSVC warnings 4072 (unreachable code) for the code following
// statement if it returns or throws (or doesn't return or throw in some
// situations).
#define GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement) \
if (::testing::internal::AlwaysTrue()) { statement; }
#define GTEST_TEST_THROW_(statement, expected_exception, fail) \
GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
if (const char* gtest_msg = "") { \
bool gtest_caught_expected = false; \
try { \
GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement); \
} \
catch (expected_exception const&) { \
gtest_caught_expected = true; \
} \
catch (...) { \
gtest_msg = "Expected: " #statement " throws an exception of type " \
#expected_exception ".\n Actual: it throws a different " \
"type."; \
goto GTEST_CONCAT_TOKEN_(gtest_label_testthrow_, __LINE__); \
} \
if (!gtest_caught_expected) { \
gtest_msg = "Expected: " #statement " throws an exception of type " \
#expected_exception ".\n Actual: it throws nothing."; \
goto GTEST_CONCAT_TOKEN_(gtest_label_testthrow_, __LINE__); \
} \
} else \
GTEST_CONCAT_TOKEN_(gtest_label_testthrow_, __LINE__): \
fail(gtest_msg)
#define GTEST_TEST_NO_THROW_(statement, fail) \
GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
if (const char* gtest_msg = "") { \
try { \
GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement); \
} \
catch (...) { \
gtest_msg = "Expected: " #statement " doesn't throw an exception.\n" \
" Actual: it throws."; \
goto GTEST_CONCAT_TOKEN_(gtest_label_testnothrow_, __LINE__); \
} \
} else \
GTEST_CONCAT_TOKEN_(gtest_label_testnothrow_, __LINE__): \
fail(gtest_msg)
#define GTEST_TEST_ANY_THROW_(statement, fail) \
GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
if (const char* gtest_msg = "") { \
bool gtest_caught_any = false; \
try { \
GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement); \
} \
catch (...) { \
gtest_caught_any = true; \
} \
if (!gtest_caught_any) { \
gtest_msg = "Expected: " #statement " throws an exception.\n" \
" Actual: it doesn't."; \
goto GTEST_CONCAT_TOKEN_(gtest_label_testanythrow_, __LINE__); \
} \
} else \
GTEST_CONCAT_TOKEN_(gtest_label_testanythrow_, __LINE__): \
fail(gtest_msg)
// Implements Boolean test assertions such as EXPECT_TRUE. expression can be
// either a boolean expression or an AssertionResult. text is a textual
// represenation of expression as it was passed into the EXPECT_TRUE.
#define GTEST_TEST_BOOLEAN_(expression, text, actual, expected, fail) \
GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
if (const ::testing::AssertionResult gtest_ar_ = \
::testing::AssertionResult(expression)) \
; \
else \
fail(::testing::internal::GetBoolAssertionFailureMessage(\
gtest_ar_, text, #actual, #expected).c_str())
#define GTEST_TEST_NO_FATAL_FAILURE_(statement, fail) \
GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
if (const char* gtest_msg = "") { \
::testing::internal::HasNewFatalFailureHelper gtest_fatal_failure_checker; \
GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement); \
if (gtest_fatal_failure_checker.has_new_fatal_failure()) { \
gtest_msg = "Expected: " #statement " doesn't generate new fatal " \
"failures in the current thread.\n" \
" Actual: it does."; \
goto GTEST_CONCAT_TOKEN_(gtest_label_testnofatal_, __LINE__); \
} \
} else \
GTEST_CONCAT_TOKEN_(gtest_label_testnofatal_, __LINE__): \
fail(gtest_msg)
// Expands to the name of the class that implements the given test.
#define GTEST_TEST_CLASS_NAME_(test_case_name, test_name) \
test_case_name##_##test_name##_Test
// Helper macro for defining tests.
#define GTEST_TEST_(test_case_name, test_name, parent_class, parent_id)\
class GTEST_TEST_CLASS_NAME_(test_case_name, test_name) : public parent_class {\
public:\
GTEST_TEST_CLASS_NAME_(test_case_name, test_name)() {}\
private:\
virtual void TestBody();\
static ::testing::TestInfo* const test_info_;\
GTEST_DISALLOW_COPY_AND_ASSIGN_(\
GTEST_TEST_CLASS_NAME_(test_case_name, test_name));\
};\
\
::testing::TestInfo* const GTEST_TEST_CLASS_NAME_(test_case_name, test_name)\
::test_info_ =\
::testing::internal::MakeAndRegisterTestInfo(\
#test_case_name, #test_name, "", "", \
(parent_id), \
parent_class::SetUpTestCase, \
parent_class::TearDownTestCase, \
new ::testing::internal::TestFactoryImpl<\
GTEST_TEST_CLASS_NAME_(test_case_name, test_name)>);\
void GTEST_TEST_CLASS_NAME_(test_case_name, test_name)::TestBody()
#endif // GTEST_INCLUDE_GTEST_INTERNAL_GTEST_INTERNAL_H_
|