summaryrefslogtreecommitdiffstats
path: root/googlemock/test/gmock-function-mocker_test.cc
blob: 019e3cb9d6e93cb8700a79a13b1beb3436f08edd (plain)
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
// Copyright 2007, 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.


// Google Mock - a framework for writing C++ mock classes.
//
// This file tests the function mocker classes.
#include "gmock/gmock-function-mocker.h"

#if GTEST_OS_WINDOWS
// MSDN says the header file to be included for STDMETHOD is BaseTyps.h but
// we are getting compiler errors if we use basetyps.h, hence including
// objbase.h for definition of STDMETHOD.
# include <objbase.h>
#endif  // GTEST_OS_WINDOWS

#include <map>
#include <string>
#include <type_traits>

#include "gmock/gmock.h"
#include "gtest/gtest.h"

namespace testing {
namespace gmock_function_mocker_test {

using testing::_;
using testing::A;
using testing::An;
using testing::AnyNumber;
using testing::Const;
using testing::DoDefault;
using testing::Eq;
using testing::Lt;
using testing::MockFunction;
using testing::Ref;
using testing::Return;
using testing::ReturnRef;
using testing::TypedEq;

template<typename T>
class TemplatedCopyable {
 public:
  TemplatedCopyable() {}

  template <typename U>
  TemplatedCopyable(const U& other) {}  // NOLINT
};

class FooInterface {
 public:
  virtual ~FooInterface() {}

  virtual void VoidReturning(int x) = 0;

  virtual int Nullary() = 0;
  virtual bool Unary(int x) = 0;
  virtual long Binary(short x, int y) = 0;  // NOLINT
  virtual int Decimal(bool b, char c, short d, int e, long f,  // NOLINT
                      float g, double h, unsigned i, char* j,
                      const std::string& k) = 0;

  virtual bool TakesNonConstReference(int& n) = 0;  // NOLINT
  virtual std::string TakesConstReference(const int& n) = 0;
  virtual bool TakesConst(const int x) = 0;

  virtual int OverloadedOnArgumentNumber() = 0;
  virtual int OverloadedOnArgumentNumber(int n) = 0;

  virtual int OverloadedOnArgumentType(int n) = 0;
  virtual char OverloadedOnArgumentType(char c) = 0;

  virtual int OverloadedOnConstness() = 0;
  virtual char OverloadedOnConstness() const = 0;

  virtual int TypeWithHole(int (*func)()) = 0;
  virtual int TypeWithComma(const std::map<int, std::string>& a_map) = 0;
  virtual int TypeWithTemplatedCopyCtor(const TemplatedCopyable<int>&) = 0;

  virtual int (*ReturnsFunctionPointer1(int))(bool) = 0;
  using fn_ptr = int (*)(bool);
  virtual fn_ptr ReturnsFunctionPointer2(int) = 0;

#if GTEST_OS_WINDOWS
  STDMETHOD_(int, CTNullary)() = 0;
  STDMETHOD_(bool, CTUnary)(int x) = 0;
  STDMETHOD_(int, CTDecimal)
  (bool b, char c, short d, int e, long f,  // NOLINT
   float g, double h, unsigned i, char* j, const std::string& k) = 0;
  STDMETHOD_(char, CTConst)(int x) const = 0;
#endif  // GTEST_OS_WINDOWS
};

// Const qualifiers on arguments were once (incorrectly) considered
// significant in determining whether two virtual functions had the same
// signature. This was fixed in Visual Studio 2008. However, the compiler
// still emits a warning that alerts about this change in behavior.
#ifdef _MSC_VER
# pragma warning(push)
# pragma warning(disable : 4373)
#endif
class MockFoo : public FooInterface {
 public:
  MockFoo() {}

  // Makes sure that a mock function parameter can be named.
  MOCK_METHOD(void, VoidReturning, (int n));  // NOLINT

  MOCK_METHOD(int, Nullary, ());  // NOLINT

  // Makes sure that a mock function parameter can be unnamed.
  MOCK_METHOD(bool, Unary, (int));          // NOLINT
  MOCK_METHOD(long, Binary, (short, int));  // NOLINT
  MOCK_METHOD(int, Decimal,
              (bool, char, short, int, long, float,  // NOLINT
               double, unsigned, char*, const std::string& str),
              (override));

  MOCK_METHOD(bool, TakesNonConstReference, (int&));  // NOLINT
  MOCK_METHOD(std::string, TakesConstReference, (const int&));
  MOCK_METHOD(bool, TakesConst, (const int));  // NOLINT

  // Tests that the function return type can contain unprotected comma.
  MOCK_METHOD((std::map<int, std::string>), ReturnTypeWithComma, (), ());
  MOCK_METHOD((std::map<int, std::string>), ReturnTypeWithComma, (int),
              (const));  // NOLINT

  MOCK_METHOD(int, OverloadedOnArgumentNumber, ());     // NOLINT
  MOCK_METHOD(int, OverloadedOnArgumentNumber, (int));  // NOLINT

  MOCK_METHOD(int, OverloadedOnArgumentType, (int));    // NOLINT
  MOCK_METHOD(char, OverloadedOnArgumentType, (char));  // NOLINT

  MOCK_METHOD(int, OverloadedOnConstness, (), (override));          // NOLINT
  MOCK_METHOD(char, OverloadedOnConstness, (), (override, const));  // NOLINT

  MOCK_METHOD(int, TypeWithHole, (int (*)()), ());  // NOLINT
  MOCK_METHOD(int, TypeWithComma, ((const std::map<int, std::string>&)));
  MOCK_METHOD(int, TypeWithTemplatedCopyCtor,
              (const TemplatedCopyable<int>&));  // NOLINT

  MOCK_METHOD(int (*)(bool), ReturnsFunctionPointer1, (int), ());
  MOCK_METHOD(fn_ptr, ReturnsFunctionPointer2, (int), ());

#if GTEST_OS_WINDOWS
  MOCK_METHOD(int, CTNullary, (), (Calltype(STDMETHODCALLTYPE)));
  MOCK_METHOD(bool, CTUnary, (int), (Calltype(STDMETHODCALLTYPE)));
  MOCK_METHOD(int, CTDecimal,
              (bool b, char c, short d, int e, long f, float g, double h,
               unsigned i, char* j, const std::string& k),
              (Calltype(STDMETHODCALLTYPE)));
  MOCK_METHOD(char, CTConst, (int), (const, Calltype(STDMETHODCALLTYPE)));
  MOCK_METHOD((std::map<int, std::string>), CTReturnTypeWithComma, (),
              (Calltype(STDMETHODCALLTYPE)));
#endif  // GTEST_OS_WINDOWS

 private:
  GTEST_DISALLOW_COPY_AND_ASSIGN_(MockFoo);
};

class LegacyMockFoo : public FooInterface {
 public:
  LegacyMockFoo() {}

  // Makes sure that a mock function parameter can be named.
  MOCK_METHOD1(VoidReturning, void(int n));  // NOLINT

  MOCK_METHOD0(Nullary, int());  // NOLINT

  // Makes sure that a mock function parameter can be unnamed.
  MOCK_METHOD1(Unary, bool(int));                                  // NOLINT
  MOCK_METHOD2(Binary, long(short, int));                          // NOLINT
  MOCK_METHOD10(Decimal, int(bool, char, short, int, long, float,  // NOLINT
                             double, unsigned, char*, const std::string& str));

  MOCK_METHOD1(TakesNonConstReference, bool(int&));  // NOLINT
  MOCK_METHOD1(TakesConstReference, std::string(const int&));
  MOCK_METHOD1(TakesConst, bool(const int));  // NOLINT

  // Tests that the function return type can contain unprotected comma.
  MOCK_METHOD0(ReturnTypeWithComma, std::map<int, std::string>());
  MOCK_CONST_METHOD1(ReturnTypeWithComma,
                     std::map<int, std::string>(int));  // NOLINT

  MOCK_METHOD0(OverloadedOnArgumentNumber, int());     // NOLINT
  MOCK_METHOD1(OverloadedOnArgumentNumber, int(int));  // NOLINT

  MOCK_METHOD1(OverloadedOnArgumentType, int(int));    // NOLINT
  MOCK_METHOD1(OverloadedOnArgumentType, char(char));  // NOLINT

  MOCK_METHOD0(OverloadedOnConstness, int());         // NOLINT
  MOCK_CONST_METHOD0(OverloadedOnConstness, char());  // NOLINT

  MOCK_METHOD1(TypeWithHole, int(int (*)()));  // NOLINT
  MOCK_METHOD1(TypeWithComma,
               int(const std::map<int, std::string>&));  // NOLINT
  MOCK_METHOD1(TypeWithTemplatedCopyCtor,
               int(const TemplatedCopyable<int>&));  // NOLINT

  MOCK_METHOD1(ReturnsFunctionPointer1, int (*(int))(bool));
  MOCK_METHOD1(ReturnsFunctionPointer2, fn_ptr(int));

#if GTEST_OS_WINDOWS
  MOCK_METHOD0_WITH_CALLTYPE(STDMETHODCALLTYPE, CTNullary, int());
  MOCK_METHOD1_WITH_CALLTYPE(STDMETHODCALLTYPE, CTUnary, bool(int));  // NOLINT
  MOCK_METHOD10_WITH_CALLTYPE(STDMETHODCALLTYPE, CTDecimal,
                              int(bool b, char c, short d, int e,  // NOLINT
                                  long f, float g, double h,       // NOLINT
                                  unsigned i, char* j, const std::string& k));
  MOCK_CONST_METHOD1_WITH_CALLTYPE(STDMETHODCALLTYPE, CTConst,
                                   char(int));  // NOLINT

  // Tests that the function return type can contain unprotected comma.
  MOCK_METHOD0_WITH_CALLTYPE(STDMETHODCALLTYPE, CTReturnTypeWithComma,
                             std::map<int, std::string>());
#endif  // GTEST_OS_WINDOWS

 private:
  GTEST_DISALLOW_COPY_AND_ASSIGN_(LegacyMockFoo);
};

#ifdef _MSC_VER
# pragma warning(pop)
#endif

template <class T>
class FunctionMockerTest : public testing::Test {
 protected:
  FunctionMockerTest() : foo_(&mock_foo_) {}

  FooInterface* const foo_;
  T mock_foo_;
};
using FunctionMockerTestTypes = ::testing::Types<MockFoo, LegacyMockFoo>;
TYPED_TEST_SUITE(FunctionMockerTest, FunctionMockerTestTypes);

// Tests mocking a void-returning function.
TYPED_TEST(FunctionMockerTest, MocksVoidFunction) {
  EXPECT_CALL(this->mock_foo_, VoidReturning(Lt(100)));
  this->foo_->VoidReturning(0);
}

// Tests mocking a nullary function.
TYPED_TEST(FunctionMockerTest, MocksNullaryFunction) {
  EXPECT_CALL(this->mock_foo_, Nullary())
      .WillOnce(DoDefault())
      .WillOnce(Return(1));

  EXPECT_EQ(0, this->foo_->Nullary());
  EXPECT_EQ(1, this->foo_->Nullary());
}

// Tests mocking a unary function.
TYPED_TEST(FunctionMockerTest, MocksUnaryFunction) {
  EXPECT_CALL(this->mock_foo_, Unary(Eq(2))).Times(2).WillOnce(Return(true));

  EXPECT_TRUE(this->foo_->Unary(2));
  EXPECT_FALSE(this->foo_->Unary(2));
}

// Tests mocking a binary function.
TYPED_TEST(FunctionMockerTest, MocksBinaryFunction) {
  EXPECT_CALL(this->mock_foo_, Binary(2, _)).WillOnce(Return(3));

  EXPECT_EQ(3, this->foo_->Binary(2, 1));
}

// Tests mocking a decimal function.
TYPED_TEST(FunctionMockerTest, MocksDecimalFunction) {
  EXPECT_CALL(this->mock_foo_,
              Decimal(true, 'a', 0, 0, 1L, A<float>(), Lt(100), 5U, NULL, "hi"))
      .WillOnce(Return(5));

  EXPECT_EQ(5, this->foo_->Decimal(true, 'a', 0, 0, 1, 0, 0, 5, nullptr, "hi"));
}

// Tests mocking a function that takes a non-const reference.
TYPED_TEST(FunctionMockerTest, MocksFunctionWithNonConstReferenceArgument) {
  int a = 0;
  EXPECT_CALL(this->mock_foo_, TakesNonConstReference(Ref(a)))
      .WillOnce(Return(true));

  EXPECT_TRUE(this->foo_->TakesNonConstReference(a));
}

// Tests mocking a function that takes a const reference.
TYPED_TEST(FunctionMockerTest, MocksFunctionWithConstReferenceArgument) {
  int a = 0;
  EXPECT_CALL(this->mock_foo_, TakesConstReference(Ref(a)))
      .WillOnce(Return("Hello"));

  EXPECT_EQ("Hello", this->foo_->TakesConstReference(a));
}

// Tests mocking a function that takes a const variable.
TYPED_TEST(FunctionMockerTest, MocksFunctionWithConstArgument) {
  EXPECT_CALL(this->mock_foo_, TakesConst(Lt(10))).WillOnce(DoDefault());

  EXPECT_FALSE(this->foo_->TakesConst(5));
}

// Tests mocking functions overloaded on the number of arguments.
TYPED_TEST(FunctionMockerTest, MocksFunctionsOverloadedOnArgumentNumber) {
  EXPECT_CALL(this->mock_foo_, OverloadedOnArgumentNumber())
      .WillOnce(Return(1));
  EXPECT_CALL(this->mock_foo_, OverloadedOnArgumentNumber(_))
      .WillOnce(Return(2));

  EXPECT_EQ(2, this->foo_->OverloadedOnArgumentNumber(1));
  EXPECT_EQ(1, this->foo_->OverloadedOnArgumentNumber());
}

// Tests mocking functions overloaded on the types of argument.
TYPED_TEST(FunctionMockerTest, MocksFunctionsOverloadedOnArgumentType) {
  EXPECT_CALL(this->mock_foo_, OverloadedOnArgumentType(An<int>()))
      .WillOnce(Return(1));
  EXPECT_CALL(this->mock_foo_, OverloadedOnArgumentType(TypedEq<char>('a')))
      .WillOnce(Return('b'));

  EXPECT_EQ(1, this->foo_->OverloadedOnArgumentType(0));
  EXPECT_EQ('b', this->foo_->OverloadedOnArgumentType('a'));
}

// Tests mocking functions overloaded on the const-ness of this object.
TYPED_TEST(FunctionMockerTest, MocksFunctionsOverloadedOnConstnessOfThis) {
  EXPECT_CALL(this->mock_foo_, OverloadedOnConstness());
  EXPECT_CALL(Const(this->mock_foo_), OverloadedOnConstness())
      .WillOnce(Return('a'));

  EXPECT_EQ(0, this->foo_->OverloadedOnConstness());
  EXPECT_EQ('a', Const(*this->foo_).OverloadedOnConstness());
}

TYPED_TEST(FunctionMockerTest, MocksReturnTypeWithComma) {
  const std::map<int, std::string> a_map;
  EXPECT_CALL(this->mock_foo_, ReturnTypeWithComma()).WillOnce(Return(a_map));
  EXPECT_CALL(this->mock_foo_, ReturnTypeWithComma(42)).WillOnce(Return(a_map));

  EXPECT_EQ(a_map, this->mock_foo_.ReturnTypeWithComma());
  EXPECT_EQ(a_map, this->mock_foo_.ReturnTypeWithComma(42));
}

TYPED_TEST(FunctionMockerTest, MocksTypeWithTemplatedCopyCtor) {
  EXPECT_CALL(this->mock_foo_, TypeWithTemplatedCopyCtor(_))
      .WillOnce(Return(true));
  EXPECT_TRUE(this->foo_->TypeWithTemplatedCopyCtor(TemplatedCopyable<int>()));
}

#if GTEST_OS_WINDOWS
// Tests mocking a nullary function with calltype.
TYPED_TEST(FunctionMockerTest, MocksNullaryFunctionWithCallType) {
  EXPECT_CALL(this->mock_foo_, CTNullary())
      .WillOnce(Return(-1))
      .WillOnce(Return(0));

  EXPECT_EQ(-1, this->foo_->CTNullary());
  EXPECT_EQ(0, this->foo_->CTNullary());
}

// Tests mocking a unary function with calltype.
TYPED_TEST(FunctionMockerTest, MocksUnaryFunctionWithCallType) {
  EXPECT_CALL(this->mock_foo_, CTUnary(Eq(2)))
      .Times(2)
      .WillOnce(Return(true))
      .WillOnce(Return(false));

  EXPECT_TRUE(this->foo_->CTUnary(2));
  EXPECT_FALSE(this->foo_->CTUnary(2));
}

// Tests mocking a decimal function with calltype.
TYPED_TEST(FunctionMockerTest, MocksDecimalFunctionWithCallType) {
  EXPECT_CALL(this->mock_foo_, CTDecimal(true, 'a', 0, 0, 1L, A<float>(),
                                         Lt(100), 5U, NULL, "hi"))
      .WillOnce(Return(10));

  EXPECT_EQ(10, this->foo_->CTDecimal(true, 'a', 0, 0, 1, 0, 0, 5, NULL, "hi"));
}

// Tests mocking functions overloaded on the const-ness of this object.
TYPED_TEST(FunctionMockerTest, MocksFunctionsConstFunctionWithCallType) {
  EXPECT_CALL(Const(this->mock_foo_), CTConst(_)).WillOnce(Return('a'));

  EXPECT_EQ('a', Const(*this->foo_).CTConst(0));
}

TYPED_TEST(FunctionMockerTest, MocksReturnTypeWithCommaAndCallType) {
  const std::map<int, std::string> a_map;
  EXPECT_CALL(this->mock_foo_, CTReturnTypeWithComma()).WillOnce(Return(a_map));

  EXPECT_EQ(a_map, this->mock_foo_.CTReturnTypeWithComma());
}

#endif  // GTEST_OS_WINDOWS

class MockB {
 public:
  MockB() {}

  MOCK_METHOD(void, DoB, ());

 private:
  GTEST_DISALLOW_COPY_AND_ASSIGN_(MockB);
};

class LegacyMockB {
 public:
  LegacyMockB() {}

  MOCK_METHOD0(DoB, void());

 private:
  GTEST_DISALLOW_COPY_AND_ASSIGN_(LegacyMockB);
};

template <typename T>
class ExpectCallTest : public ::testing::Test {};
using ExpectCallTestTypes = ::testing::Types<MockB, LegacyMockB>;
TYPED_TEST_SUITE(ExpectCallTest, ExpectCallTestTypes);

// Tests that functions with no EXPECT_CALL() rules can be called any
// number of times.
TYPED_TEST(ExpectCallTest, UnmentionedFunctionCanBeCalledAnyNumberOfTimes) {
  { TypeParam b; }

  {
    TypeParam b;
    b.DoB();
  }

  {
    TypeParam b;
    b.DoB();
    b.DoB();
  }
}

// Tests mocking template interfaces.

template <typename T>
class StackInterface {
 public:
  virtual ~StackInterface() {}

  // Template parameter appears in function parameter.
  virtual void Push(const T& value) = 0;
  virtual void Pop() = 0;
  virtual int GetSize() const = 0;
  // Template parameter appears in function return type.
  virtual const T& GetTop() const = 0;
};

template <typename T>
class MockStack : public StackInterface<T> {
 public:
  MockStack() {}

  MOCK_METHOD(void, Push, (const T& elem), ());
  MOCK_METHOD(void, Pop, (), (final));
  MOCK_METHOD(int, GetSize, (), (const, override));
  MOCK_METHOD(const T&, GetTop, (), (const));

  // Tests that the function return type can contain unprotected comma.
  MOCK_METHOD((std::map<int, int>), ReturnTypeWithComma, (), ());
  MOCK_METHOD((std::map<int, int>), ReturnTypeWithComma, (int), (const));

 private:
  GTEST_DISALLOW_COPY_AND_ASSIGN_(MockStack);
};

template <typename T>
class LegacyMockStack : public StackInterface<T> {
 public:
  LegacyMockStack() {}

  MOCK_METHOD1_T(Push, void(const T& elem));
  MOCK_METHOD0_T(Pop, void());
  MOCK_CONST_METHOD0_T(GetSize, int());  // NOLINT
  MOCK_CONST_METHOD0_T(GetTop, const T&());

  // Tests that the function return type can contain unprotected comma.
  MOCK_METHOD0_T(ReturnTypeWithComma, std::map<int, int>());
  MOCK_CONST_METHOD1_T(ReturnTypeWithComma, std::map<int, int>(int));  // NOLINT

 private:
  GTEST_DISALLOW_COPY_AND_ASSIGN_(LegacyMockStack);
};

template <typename T>
class TemplateMockTest : public ::testing::Test {};
using TemplateMockTestTypes =
    ::testing::Types<MockStack<int>, LegacyMockStack<int>>;
TYPED_TEST_SUITE(TemplateMockTest, TemplateMockTestTypes);

// Tests that template mock works.
TYPED_TEST(TemplateMockTest, Works) {
  TypeParam mock;

  EXPECT_CALL(mock, GetSize())
      .WillOnce(Return(0))
      .WillOnce(Return(1))
      .WillOnce(Return(0));
  EXPECT_CALL(mock, Push(_));
  int n = 5;
  EXPECT_CALL(mock, GetTop())
      .WillOnce(ReturnRef(n));
  EXPECT_CALL(mock, Pop())
      .Times(AnyNumber());

  EXPECT_EQ(0, mock.GetSize());
  mock.Push(5);
  EXPECT_EQ(1, mock.GetSize());
  EXPECT_EQ(5, mock.GetTop());
  mock.Pop();
  EXPECT_EQ(0, mock.GetSize());
}

TYPED_TEST(TemplateMockTest, MethodWithCommaInReturnTypeWorks) {
  TypeParam mock;

  const std::map<int, int> a_map;
  EXPECT_CALL(mock, ReturnTypeWithComma())
      .WillOnce(Return(a_map));
  EXPECT_CALL(mock, ReturnTypeWithComma(1))
      .WillOnce(Return(a_map));

  EXPECT_EQ(a_map, mock.ReturnTypeWithComma());
  EXPECT_EQ(a_map, mock.ReturnTypeWithComma(1));
}

#if GTEST_OS_WINDOWS
// Tests mocking template interfaces with calltype.

template <typename T>
class StackInterfaceWithCallType {
 public:
  virtual ~StackInterfaceWithCallType() {}

  // Template parameter appears in function parameter.
  STDMETHOD_(void, Push)(const T& value) = 0;
  STDMETHOD_(void, Pop)() = 0;
  STDMETHOD_(int, GetSize)() const = 0;
  // Template parameter appears in function return type.
  STDMETHOD_(const T&, GetTop)() const = 0;
};

template <typename T>
class MockStackWithCallType : public StackInterfaceWithCallType<T> {
 public:
  MockStackWithCallType() {}

  MOCK_METHOD(void, Push, (const T& elem),
              (Calltype(STDMETHODCALLTYPE), override));
  MOCK_METHOD(void, Pop, (), (Calltype(STDMETHODCALLTYPE), override));
  MOCK_METHOD(int, GetSize, (), (Calltype(STDMETHODCALLTYPE), override, const));
  MOCK_METHOD(const T&, GetTop, (),
              (Calltype(STDMETHODCALLTYPE), override, const));

 private:
  GTEST_DISALLOW_COPY_AND_ASSIGN_(MockStackWithCallType);
};

template <typename T>
class LegacyMockStackWithCallType : public StackInterfaceWithCallType<T> {
 public:
  LegacyMockStackWithCallType() {}

  MOCK_METHOD1_T_WITH_CALLTYPE(STDMETHODCALLTYPE, Push, void(const T& elem));
  MOCK_METHOD0_T_WITH_CALLTYPE(STDMETHODCALLTYPE, Pop, void());
  MOCK_CONST_METHOD0_T_WITH_CALLTYPE(STDMETHODCALLTYPE, GetSize, int());
  MOCK_CONST_METHOD0_T_WITH_CALLTYPE(STDMETHODCALLTYPE, GetTop, const T&());

 private:
  GTEST_DISALLOW_COPY_AND_ASSIGN_(LegacyMockStackWithCallType);
};

template <typename T>
class TemplateMockTestWithCallType : public ::testing::Test {};
using TemplateMockTestWithCallTypeTypes =
    ::testing::Types<MockStackWithCallType<int>,
                     LegacyMockStackWithCallType<int>>;
TYPED_TEST_SUITE(TemplateMockTestWithCallType,
                 TemplateMockTestWithCallTypeTypes);

// Tests that template mock with calltype works.
TYPED_TEST(TemplateMockTestWithCallType, Works) {
  TypeParam mock;

  EXPECT_CALL(mock, GetSize())
      .WillOnce(Return(0))
      .WillOnce(Return(1))
      .WillOnce(Return(0));
  EXPECT_CALL(mock, Push(_));
  int n = 5;
  EXPECT_CALL(mock, GetTop())
      .WillOnce(ReturnRef(n));
  EXPECT_CALL(mock, Pop())
      .Times(AnyNumber());

  EXPECT_EQ(0, mock.GetSize());
  mock.Push(5);
  EXPECT_EQ(1, mock.GetSize());
  EXPECT_EQ(5, mock.GetTop());
  mock.Pop();
  EXPECT_EQ(0, mock.GetSize());
}
#endif  // GTEST_OS_WINDOWS

#define MY_MOCK_METHODS1_                       \
  MOCK_METHOD(void, Overloaded, ());            \
  MOCK_METHOD(int, Overloaded, (int), (const)); \
  MOCK_METHOD(bool, Overloaded, (bool f, int n))

#define LEGACY_MY_MOCK_METHODS1_              \
  MOCK_METHOD0(Overloaded, void());           \
  MOCK_CONST_METHOD1(Overloaded, int(int n)); \
  MOCK_METHOD2(Overloaded, bool(bool f, int n))

class MockOverloadedOnArgNumber {
 public:
  MockOverloadedOnArgNumber() {}

  MY_MOCK_METHODS1_;

 private:
  GTEST_DISALLOW_COPY_AND_ASSIGN_(MockOverloadedOnArgNumber);
};

class LegacyMockOverloadedOnArgNumber {
 public:
  LegacyMockOverloadedOnArgNumber() {}

  LEGACY_MY_MOCK_METHODS1_;

 private:
  GTEST_DISALLOW_COPY_AND_ASSIGN_(LegacyMockOverloadedOnArgNumber);
};

template <typename T>
class OverloadedMockMethodTest : public ::testing::Test {};
using OverloadedMockMethodTestTypes =
    ::testing::Types<MockOverloadedOnArgNumber,
                     LegacyMockOverloadedOnArgNumber>;
TYPED_TEST_SUITE(OverloadedMockMethodTest, OverloadedMockMethodTestTypes);

TYPED_TEST(OverloadedMockMethodTest, CanOverloadOnArgNumberInMacroBody) {
  TypeParam mock;
  EXPECT_CALL(mock, Overloaded());
  EXPECT_CALL(mock, Overloaded(1)).WillOnce(Return(2));
  EXPECT_CALL(mock, Overloaded(true, 1)).WillOnce(Return(true));

  mock.Overloaded();
  EXPECT_EQ(2, mock.Overloaded(1));
  EXPECT_TRUE(mock.Overloaded(true, 1));
}

#define MY_MOCK_METHODS2_ \
    MOCK_CONST_METHOD1(Overloaded, int(int n)); \
    MOCK_METHOD1(Overloaded, int(int n))

class MockOverloadedOnConstness {
 public:
  MockOverloadedOnConstness() {}

  MY_MOCK_METHODS2_;

 private:
  GTEST_DISALLOW_COPY_AND_ASSIGN_(MockOverloadedOnConstness);
};

TEST(MockMethodOverloadedMockMethodTest, CanOverloadOnConstnessInMacroBody) {
  MockOverloadedOnConstness mock;
  const MockOverloadedOnConstness* const_mock = &mock;
  EXPECT_CALL(mock, Overloaded(1)).WillOnce(Return(2));
  EXPECT_CALL(*const_mock, Overloaded(1)).WillOnce(Return(3));

  EXPECT_EQ(2, mock.Overloaded(1));
  EXPECT_EQ(3, const_mock->Overloaded(1));
}

TEST(MockMethodMockFunctionTest, WorksForVoidNullary) {
  MockFunction<void()> foo;
  EXPECT_CALL(foo, Call());
  foo.Call();
}

TEST(MockMethodMockFunctionTest, WorksForNonVoidNullary) {
  MockFunction<int()> foo;
  EXPECT_CALL(foo, Call())
      .WillOnce(Return(1))
      .WillOnce(Return(2));
  EXPECT_EQ(1, foo.Call());
  EXPECT_EQ(2, foo.Call());
}

TEST(MockMethodMockFunctionTest, WorksForVoidUnary) {
  MockFunction<void(int)> foo;
  EXPECT_CALL(foo, Call(1));
  foo.Call(1);
}

TEST(MockMethodMockFunctionTest, WorksForNonVoidBinary) {
  MockFunction<int(bool, int)> foo;
  EXPECT_CALL(foo, Call(false, 42))
      .WillOnce(Return(1))
      .WillOnce(Return(2));
  EXPECT_CALL(foo, Call(true, Ge(100)))
      .WillOnce(Return(3));
  EXPECT_EQ(1, foo.Call(false, 42));
  EXPECT_EQ(2, foo.Call(false, 42));
  EXPECT_EQ(3, foo.Call(true, 120));
}

TEST(MockMethodMockFunctionTest, WorksFor10Arguments) {
  MockFunction<int(bool a0, char a1, int a2, int a3, int a4,
                   int a5, int a6, char a7, int a8, bool a9)> foo;
  EXPECT_CALL(foo, Call(_, 'a', _, _, _, _, _, _, _, _))
      .WillOnce(Return(1))
      .WillOnce(Return(2));
  EXPECT_EQ(1, foo.Call(false, 'a', 0, 0, 0, 0, 0, 'b', 0, true));
  EXPECT_EQ(2, foo.Call(true, 'a', 0, 0, 0, 0, 0, 'b', 1, false));
}

TEST(MockMethodMockFunctionTest, AsStdFunction) {
  MockFunction<int(int)> foo;
  auto call = [](const std::function<int(int)> &f, int i) {
    return f(i);
  };
  EXPECT_CALL(foo, Call(1)).WillOnce(Return(-1));
  EXPECT_CALL(foo, Call(2)).WillOnce(Return(-2));
  EXPECT_EQ(-1, call(foo.AsStdFunction(), 1));
  EXPECT_EQ(-2, call(foo.AsStdFunction(), 2));
}

TEST(MockMethodMockFunctionTest, AsStdFunctionReturnsReference) {
  MockFunction<int&()> foo;
  int value = 1;
  EXPECT_CALL(foo, Call()).WillOnce(ReturnRef(value));
  int& ref = foo.AsStdFunction()();
  EXPECT_EQ(1, ref);
  value = 2;
  EXPECT_EQ(2, ref);
}

TEST(MockMethodMockFunctionTest, AsStdFunctionWithReferenceParameter) {
  MockFunction<int(int &)> foo;
  auto call = [](const std::function<int(int& )> &f, int &i) {
    return f(i);
  };
  int i = 42;
  EXPECT_CALL(foo, Call(i)).WillOnce(Return(-1));
  EXPECT_EQ(-1, call(foo.AsStdFunction(), i));
}


struct MockMethodSizes0 {
  MOCK_METHOD(void, func, ());
};
struct MockMethodSizes1 {
  MOCK_METHOD(void, func, (int));
};
struct MockMethodSizes2 {
  MOCK_METHOD(void, func, (int, int));
};
struct MockMethodSizes3 {
  MOCK_METHOD(void, func, (int, int, int));
};
struct MockMethodSizes4 {
  MOCK_METHOD(void, func, (int, int, int, int));
};

struct LegacyMockMethodSizes0 {
    MOCK_METHOD0(func, void());
};
struct LegacyMockMethodSizes1 {
    MOCK_METHOD1(func, void(int));
};
struct LegacyMockMethodSizes2 {
    MOCK_METHOD2(func, void(int, int));
};
struct LegacyMockMethodSizes3 {
    MOCK_METHOD3(func, void(int, int, int));
};
struct LegacyMockMethodSizes4 {
    MOCK_METHOD4(func, void(int, int, int, int));
};


TEST(MockMethodMockFunctionTest, MockMethodSizeOverhead) {
  EXPECT_EQ(sizeof(MockMethodSizes0), sizeof(MockMethodSizes1));
  EXPECT_EQ(sizeof(MockMethodSizes0), sizeof(MockMethodSizes2));
  EXPECT_EQ(sizeof(MockMethodSizes0), sizeof(MockMethodSizes3));
  EXPECT_EQ(sizeof(MockMethodSizes0), sizeof(MockMethodSizes4));

  EXPECT_EQ(sizeof(LegacyMockMethodSizes0), sizeof(LegacyMockMethodSizes1));
  EXPECT_EQ(sizeof(LegacyMockMethodSizes0), sizeof(LegacyMockMethodSizes2));
  EXPECT_EQ(sizeof(LegacyMockMethodSizes0), sizeof(LegacyMockMethodSizes3));
  EXPECT_EQ(sizeof(LegacyMockMethodSizes0), sizeof(LegacyMockMethodSizes4));

  EXPECT_EQ(sizeof(LegacyMockMethodSizes0), sizeof(MockMethodSizes0));
}

void hasTwoParams(int, int);
void MaybeThrows();
void DoesntThrow() noexcept;
struct MockMethodNoexceptSpecifier {
  MOCK_METHOD(void, func1, (), (noexcept));
  MOCK_METHOD(void, func2, (), (noexcept(true)));
  MOCK_METHOD(void, func3, (), (noexcept(false)));
  MOCK_METHOD(void, func4, (), (noexcept(noexcept(MaybeThrows()))));
  MOCK_METHOD(void, func5, (), (noexcept(noexcept(DoesntThrow()))));
  MOCK_METHOD(void, func6, (), (noexcept(noexcept(DoesntThrow())), const));
  MOCK_METHOD(void, func7, (), (const, noexcept(noexcept(DoesntThrow()))));
  // Put commas in the noexcept expression
  MOCK_METHOD(void, func8, (), (noexcept(noexcept(hasTwoParams(1, 2))), const));
};

TEST(MockMethodMockFunctionTest, NoexceptSpecifierPreserved) {
  EXPECT_TRUE(noexcept(std::declval<MockMethodNoexceptSpecifier>().func1()));
  EXPECT_TRUE(noexcept(std::declval<MockMethodNoexceptSpecifier>().func2()));
  EXPECT_FALSE(noexcept(std::declval<MockMethodNoexceptSpecifier>().func3()));
  EXPECT_FALSE(noexcept(std::declval<MockMethodNoexceptSpecifier>().func4()));
  EXPECT_TRUE(noexcept(std::declval<MockMethodNoexceptSpecifier>().func5()));
  EXPECT_TRUE(noexcept(std::declval<MockMethodNoexceptSpecifier>().func6()));
  EXPECT_TRUE(noexcept(std::declval<MockMethodNoexceptSpecifier>().func7()));
  EXPECT_EQ(noexcept(std::declval<MockMethodNoexceptSpecifier>().func8()),
            noexcept(hasTwoParams(1, 2)));
}

}  // namespace gmock_function_mocker_test
}  // namespace testing