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1 // Copyright 2007, 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
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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 
31 // Google Mock - a framework for writing C++ mock classes.
32 //
33 // This file tests the function mocker classes.
34 #include "gmock/gmock-generated-function-mockers.h"
35 
36 #if GTEST_OS_WINDOWS
37 // MSDN says the header file to be included for STDMETHOD is BaseTyps.h but
38 // we are getting compiler errors if we use basetyps.h, hence including
39 // objbase.h for definition of STDMETHOD.
40 # include <objbase.h>
41 #endif  // GTEST_OS_WINDOWS
42 
43 #include <map>
44 #include <string>
45 #include "gmock/gmock.h"
46 #include "gtest/gtest.h"
47 
48 namespace testing {
49 namespace gmock_function_mocker_test {
50 
51 using testing::_;
52 using testing::A;
53 using testing::An;
54 using testing::AnyNumber;
55 using testing::Const;
56 using testing::DoDefault;
57 using testing::Eq;
58 using testing::Lt;
59 using testing::MockFunction;
60 using testing::Ref;
61 using testing::Return;
62 using testing::ReturnRef;
63 using testing::TypedEq;
64 
65 template<typename T>
66 class TemplatedCopyable {
67  public:
TemplatedCopyable()68   TemplatedCopyable() {}
69 
70   template <typename U>
TemplatedCopyable(const U & other)71   TemplatedCopyable(const U& other) {}  // NOLINT
72 };
73 
74 class FooInterface {
75  public:
~FooInterface()76   virtual ~FooInterface() {}
77 
78   virtual void VoidReturning(int x) = 0;
79 
80   virtual int Nullary() = 0;
81   virtual bool Unary(int x) = 0;
82   virtual long Binary(short x, int y) = 0;  // NOLINT
83   virtual int Decimal(bool b, char c, short d, int e, long f,  // NOLINT
84                       float g, double h, unsigned i, char* j,
85                       const std::string& k) = 0;
86 
87   virtual bool TakesNonConstReference(int& n) = 0;  // NOLINT
88   virtual std::string TakesConstReference(const int& n) = 0;
89   virtual bool TakesConst(const int x) = 0;
90 
91   virtual int OverloadedOnArgumentNumber() = 0;
92   virtual int OverloadedOnArgumentNumber(int n) = 0;
93 
94   virtual int OverloadedOnArgumentType(int n) = 0;
95   virtual char OverloadedOnArgumentType(char c) = 0;
96 
97   virtual int OverloadedOnConstness() = 0;
98   virtual char OverloadedOnConstness() const = 0;
99 
100   virtual int TypeWithHole(int (*func)()) = 0;
101   virtual int TypeWithComma(const std::map<int, std::string>& a_map) = 0;
102   virtual int TypeWithTemplatedCopyCtor(const TemplatedCopyable<int>&) = 0;
103 
104 #if GTEST_OS_WINDOWS
105   STDMETHOD_(int, CTNullary)() = 0;
106   STDMETHOD_(bool, CTUnary)(int x) = 0;
107   STDMETHOD_(int, CTDecimal)
108   (bool b, char c, short d, int e, long f,  // NOLINT
109    float g, double h, unsigned i, char* j, const std::string& k) = 0;
110   STDMETHOD_(char, CTConst)(int x) const = 0;
111 #endif  // GTEST_OS_WINDOWS
112 };
113 
114 // Const qualifiers on arguments were once (incorrectly) considered
115 // significant in determining whether two virtual functions had the same
116 // signature. This was fixed in Visual Studio 2008. However, the compiler
117 // still emits a warning that alerts about this change in behavior.
118 #ifdef _MSC_VER
119 # pragma warning(push)
120 # pragma warning(disable : 4373)
121 #endif
122 class MockFoo : public FooInterface {
123  public:
MockFoo()124   MockFoo() {}
125 
126   // Makes sure that a mock function parameter can be named.
127   MOCK_METHOD(void, VoidReturning, (int n));  // NOLINT
128 
129   MOCK_METHOD(int, Nullary, ());  // NOLINT
130 
131   // Makes sure that a mock function parameter can be unnamed.
132   MOCK_METHOD(bool, Unary, (int));          // NOLINT
133   MOCK_METHOD(long, Binary, (short, int));  // NOLINT
134   MOCK_METHOD(int, Decimal,
135               (bool, char, short, int, long, float,  // NOLINT
136                double, unsigned, char*, const std::string& str),
137               (override));
138 
139   MOCK_METHOD(bool, TakesNonConstReference, (int&));  // NOLINT
140   MOCK_METHOD(std::string, TakesConstReference, (const int&));
141   MOCK_METHOD(bool, TakesConst, (const int));  // NOLINT
142 
143   // Tests that the function return type can contain unprotected comma.
144   MOCK_METHOD((std::map<int, std::string>), ReturnTypeWithComma, (), ());
145   MOCK_METHOD((std::map<int, std::string>), ReturnTypeWithComma, (int),
146               (const));  // NOLINT
147 
148   MOCK_METHOD(int, OverloadedOnArgumentNumber, ());     // NOLINT
149   MOCK_METHOD(int, OverloadedOnArgumentNumber, (int));  // NOLINT
150 
151   MOCK_METHOD(int, OverloadedOnArgumentType, (int));    // NOLINT
152   MOCK_METHOD(char, OverloadedOnArgumentType, (char));  // NOLINT
153 
154   MOCK_METHOD(int, OverloadedOnConstness, (), (override));          // NOLINT
155   MOCK_METHOD(char, OverloadedOnConstness, (), (override, const));  // NOLINT
156 
157   MOCK_METHOD(int, TypeWithHole, (int (*)()), ());  // NOLINT
158   MOCK_METHOD(int, TypeWithComma, ((const std::map<int, std::string>&)));
159   MOCK_METHOD(int, TypeWithTemplatedCopyCtor,
160               (const TemplatedCopyable<int>&));  // NOLINT
161 
162 #if GTEST_OS_WINDOWS
163   MOCK_METHOD(int, CTNullary, (), (Calltype(STDMETHODCALLTYPE)));
164   MOCK_METHOD(bool, CTUnary, (int), (Calltype(STDMETHODCALLTYPE)));
165   MOCK_METHOD(int, CTDecimal,
166               (bool b, char c, short d, int e, long f, float g, double h,
167                unsigned i, char* j, const std::string& k),
168               (Calltype(STDMETHODCALLTYPE)));
169   MOCK_METHOD(char, CTConst, (int), (const, Calltype(STDMETHODCALLTYPE)));
170   MOCK_METHOD((std::map<int, std::string>), CTReturnTypeWithComma, (),
171               (Calltype(STDMETHODCALLTYPE)));
172 #endif  // GTEST_OS_WINDOWS
173 
174  private:
175   GTEST_DISALLOW_COPY_AND_ASSIGN_(MockFoo);
176 };
177 #ifdef _MSC_VER
178 # pragma warning(pop)
179 #endif
180 
181 class MockMethodFunctionMockerTest : public testing::Test {
182  protected:
MockMethodFunctionMockerTest()183   MockMethodFunctionMockerTest() : foo_(&mock_foo_) {}
184 
185   FooInterface* const foo_;
186   MockFoo mock_foo_;
187 };
188 
189 // Tests mocking a void-returning function.
TEST_F(MockMethodFunctionMockerTest,MocksVoidFunction)190 TEST_F(MockMethodFunctionMockerTest, MocksVoidFunction) {
191   EXPECT_CALL(mock_foo_, VoidReturning(Lt(100)));
192   foo_->VoidReturning(0);
193 }
194 
195 // Tests mocking a nullary function.
TEST_F(MockMethodFunctionMockerTest,MocksNullaryFunction)196 TEST_F(MockMethodFunctionMockerTest, MocksNullaryFunction) {
197   EXPECT_CALL(mock_foo_, Nullary())
198       .WillOnce(DoDefault())
199       .WillOnce(Return(1));
200 
201   EXPECT_EQ(0, foo_->Nullary());
202   EXPECT_EQ(1, foo_->Nullary());
203 }
204 
205 // Tests mocking a unary function.
TEST_F(MockMethodFunctionMockerTest,MocksUnaryFunction)206 TEST_F(MockMethodFunctionMockerTest, MocksUnaryFunction) {
207   EXPECT_CALL(mock_foo_, Unary(Eq(2)))
208       .Times(2)
209       .WillOnce(Return(true));
210 
211   EXPECT_TRUE(foo_->Unary(2));
212   EXPECT_FALSE(foo_->Unary(2));
213 }
214 
215 // Tests mocking a binary function.
TEST_F(MockMethodFunctionMockerTest,MocksBinaryFunction)216 TEST_F(MockMethodFunctionMockerTest, MocksBinaryFunction) {
217   EXPECT_CALL(mock_foo_, Binary(2, _))
218       .WillOnce(Return(3));
219 
220   EXPECT_EQ(3, foo_->Binary(2, 1));
221 }
222 
223 // Tests mocking a decimal function.
TEST_F(MockMethodFunctionMockerTest,MocksDecimalFunction)224 TEST_F(MockMethodFunctionMockerTest, MocksDecimalFunction) {
225   EXPECT_CALL(mock_foo_, Decimal(true, 'a', 0, 0, 1L, A<float>(),
226                                  Lt(100), 5U, NULL, "hi"))
227       .WillOnce(Return(5));
228 
229   EXPECT_EQ(5, foo_->Decimal(true, 'a', 0, 0, 1, 0, 0, 5, nullptr, "hi"));
230 }
231 
232 // Tests mocking a function that takes a non-const reference.
TEST_F(MockMethodFunctionMockerTest,MocksFunctionWithNonConstReferenceArgument)233 TEST_F(MockMethodFunctionMockerTest,
234        MocksFunctionWithNonConstReferenceArgument) {
235   int a = 0;
236   EXPECT_CALL(mock_foo_, TakesNonConstReference(Ref(a)))
237       .WillOnce(Return(true));
238 
239   EXPECT_TRUE(foo_->TakesNonConstReference(a));
240 }
241 
242 // Tests mocking a function that takes a const reference.
TEST_F(MockMethodFunctionMockerTest,MocksFunctionWithConstReferenceArgument)243 TEST_F(MockMethodFunctionMockerTest, MocksFunctionWithConstReferenceArgument) {
244   int a = 0;
245   EXPECT_CALL(mock_foo_, TakesConstReference(Ref(a)))
246       .WillOnce(Return("Hello"));
247 
248   EXPECT_EQ("Hello", foo_->TakesConstReference(a));
249 }
250 
251 // Tests mocking a function that takes a const variable.
TEST_F(MockMethodFunctionMockerTest,MocksFunctionWithConstArgument)252 TEST_F(MockMethodFunctionMockerTest, MocksFunctionWithConstArgument) {
253   EXPECT_CALL(mock_foo_, TakesConst(Lt(10)))
254       .WillOnce(DoDefault());
255 
256   EXPECT_FALSE(foo_->TakesConst(5));
257 }
258 
259 // Tests mocking functions overloaded on the number of arguments.
TEST_F(MockMethodFunctionMockerTest,MocksFunctionsOverloadedOnArgumentNumber)260 TEST_F(MockMethodFunctionMockerTest, MocksFunctionsOverloadedOnArgumentNumber) {
261   EXPECT_CALL(mock_foo_, OverloadedOnArgumentNumber())
262       .WillOnce(Return(1));
263   EXPECT_CALL(mock_foo_, OverloadedOnArgumentNumber(_))
264       .WillOnce(Return(2));
265 
266   EXPECT_EQ(2, foo_->OverloadedOnArgumentNumber(1));
267   EXPECT_EQ(1, foo_->OverloadedOnArgumentNumber());
268 }
269 
270 // Tests mocking functions overloaded on the types of argument.
TEST_F(MockMethodFunctionMockerTest,MocksFunctionsOverloadedOnArgumentType)271 TEST_F(MockMethodFunctionMockerTest, MocksFunctionsOverloadedOnArgumentType) {
272   EXPECT_CALL(mock_foo_, OverloadedOnArgumentType(An<int>()))
273       .WillOnce(Return(1));
274   EXPECT_CALL(mock_foo_, OverloadedOnArgumentType(TypedEq<char>('a')))
275       .WillOnce(Return('b'));
276 
277   EXPECT_EQ(1, foo_->OverloadedOnArgumentType(0));
278   EXPECT_EQ('b', foo_->OverloadedOnArgumentType('a'));
279 }
280 
281 // Tests mocking functions overloaded on the const-ness of this object.
TEST_F(MockMethodFunctionMockerTest,MocksFunctionsOverloadedOnConstnessOfThis)282 TEST_F(MockMethodFunctionMockerTest,
283        MocksFunctionsOverloadedOnConstnessOfThis) {
284   EXPECT_CALL(mock_foo_, OverloadedOnConstness());
285   EXPECT_CALL(Const(mock_foo_), OverloadedOnConstness())
286       .WillOnce(Return('a'));
287 
288   EXPECT_EQ(0, foo_->OverloadedOnConstness());
289   EXPECT_EQ('a', Const(*foo_).OverloadedOnConstness());
290 }
291 
TEST_F(MockMethodFunctionMockerTest,MocksReturnTypeWithComma)292 TEST_F(MockMethodFunctionMockerTest, MocksReturnTypeWithComma) {
293   const std::map<int, std::string> a_map;
294   EXPECT_CALL(mock_foo_, ReturnTypeWithComma())
295       .WillOnce(Return(a_map));
296   EXPECT_CALL(mock_foo_, ReturnTypeWithComma(42))
297       .WillOnce(Return(a_map));
298 
299   EXPECT_EQ(a_map, mock_foo_.ReturnTypeWithComma());
300   EXPECT_EQ(a_map, mock_foo_.ReturnTypeWithComma(42));
301 }
302 
TEST_F(MockMethodFunctionMockerTest,MocksTypeWithTemplatedCopyCtor)303 TEST_F(MockMethodFunctionMockerTest, MocksTypeWithTemplatedCopyCtor) {
304   EXPECT_CALL(mock_foo_, TypeWithTemplatedCopyCtor(_)).WillOnce(Return(true));
305   EXPECT_TRUE(foo_->TypeWithTemplatedCopyCtor(TemplatedCopyable<int>()));
306 }
307 
308 #if GTEST_OS_WINDOWS
309 // Tests mocking a nullary function with calltype.
TEST_F(MockMethodFunctionMockerTest,MocksNullaryFunctionWithCallType)310 TEST_F(MockMethodFunctionMockerTest, MocksNullaryFunctionWithCallType) {
311   EXPECT_CALL(mock_foo_, CTNullary())
312       .WillOnce(Return(-1))
313       .WillOnce(Return(0));
314 
315   EXPECT_EQ(-1, foo_->CTNullary());
316   EXPECT_EQ(0, foo_->CTNullary());
317 }
318 
319 // Tests mocking a unary function with calltype.
TEST_F(MockMethodFunctionMockerTest,MocksUnaryFunctionWithCallType)320 TEST_F(MockMethodFunctionMockerTest, MocksUnaryFunctionWithCallType) {
321   EXPECT_CALL(mock_foo_, CTUnary(Eq(2)))
322       .Times(2)
323       .WillOnce(Return(true))
324       .WillOnce(Return(false));
325 
326   EXPECT_TRUE(foo_->CTUnary(2));
327   EXPECT_FALSE(foo_->CTUnary(2));
328 }
329 
330 // Tests mocking a decimal function with calltype.
TEST_F(MockMethodFunctionMockerTest,MocksDecimalFunctionWithCallType)331 TEST_F(MockMethodFunctionMockerTest, MocksDecimalFunctionWithCallType) {
332   EXPECT_CALL(mock_foo_, CTDecimal(true, 'a', 0, 0, 1L, A<float>(),
333                                    Lt(100), 5U, NULL, "hi"))
334       .WillOnce(Return(10));
335 
336   EXPECT_EQ(10, foo_->CTDecimal(true, 'a', 0, 0, 1, 0, 0, 5, NULL, "hi"));
337 }
338 
339 // Tests mocking functions overloaded on the const-ness of this object.
TEST_F(MockMethodFunctionMockerTest,MocksFunctionsConstFunctionWithCallType)340 TEST_F(MockMethodFunctionMockerTest, MocksFunctionsConstFunctionWithCallType) {
341   EXPECT_CALL(Const(mock_foo_), CTConst(_))
342       .WillOnce(Return('a'));
343 
344   EXPECT_EQ('a', Const(*foo_).CTConst(0));
345 }
346 
TEST_F(MockMethodFunctionMockerTest,MocksReturnTypeWithCommaAndCallType)347 TEST_F(MockMethodFunctionMockerTest, MocksReturnTypeWithCommaAndCallType) {
348   const std::map<int, std::string> a_map;
349   EXPECT_CALL(mock_foo_, CTReturnTypeWithComma())
350       .WillOnce(Return(a_map));
351 
352   EXPECT_EQ(a_map, mock_foo_.CTReturnTypeWithComma());
353 }
354 
355 #endif  // GTEST_OS_WINDOWS
356 
357 class MockB {
358  public:
MockB()359   MockB() {}
360 
361   MOCK_METHOD(void, DoB, ());
362 
363  private:
364   GTEST_DISALLOW_COPY_AND_ASSIGN_(MockB);
365 };
366 
367 // Tests that functions with no EXPECT_CALL() rules can be called any
368 // number of times.
TEST(MockMethodExpectCallTest,UnmentionedFunctionCanBeCalledAnyNumberOfTimes)369 TEST(MockMethodExpectCallTest, UnmentionedFunctionCanBeCalledAnyNumberOfTimes) {
370   {
371     MockB b;
372   }
373 
374   {
375     MockB b;
376     b.DoB();
377   }
378 
379   {
380     MockB b;
381     b.DoB();
382     b.DoB();
383   }
384 }
385 
386 // Tests mocking template interfaces.
387 
388 template <typename T>
389 class StackInterface {
390  public:
~StackInterface()391   virtual ~StackInterface() {}
392 
393   // Template parameter appears in function parameter.
394   virtual void Push(const T& value) = 0;
395   virtual void Pop() = 0;
396   virtual int GetSize() const = 0;
397   // Template parameter appears in function return type.
398   virtual const T& GetTop() const = 0;
399 };
400 
401 template <typename T>
402 class MockStack : public StackInterface<T> {
403  public:
MockStack()404   MockStack() {}
405 
406   MOCK_METHOD(void, Push, (const T& elem), ());
407   MOCK_METHOD(void, Pop, (), (final));
408   MOCK_METHOD(int, GetSize, (), (const, override));
409   MOCK_METHOD(const T&, GetTop, (), (const));
410 
411   // Tests that the function return type can contain unprotected comma.
412   MOCK_METHOD((std::map<int, int>), ReturnTypeWithComma, (), ());
413   MOCK_METHOD((std::map<int, int>), ReturnTypeWithComma, (int), (const));
414 
415  private:
416   GTEST_DISALLOW_COPY_AND_ASSIGN_(MockStack);
417 };
418 
419 // Tests that template mock works.
TEST(MockMethodTemplateMockTest,Works)420 TEST(MockMethodTemplateMockTest, Works) {
421   MockStack<int> mock;
422 
423   EXPECT_CALL(mock, GetSize())
424       .WillOnce(Return(0))
425       .WillOnce(Return(1))
426       .WillOnce(Return(0));
427   EXPECT_CALL(mock, Push(_));
428   int n = 5;
429   EXPECT_CALL(mock, GetTop())
430       .WillOnce(ReturnRef(n));
431   EXPECT_CALL(mock, Pop())
432       .Times(AnyNumber());
433 
434   EXPECT_EQ(0, mock.GetSize());
435   mock.Push(5);
436   EXPECT_EQ(1, mock.GetSize());
437   EXPECT_EQ(5, mock.GetTop());
438   mock.Pop();
439   EXPECT_EQ(0, mock.GetSize());
440 }
441 
TEST(MockMethodTemplateMockTest,MethodWithCommaInReturnTypeWorks)442 TEST(MockMethodTemplateMockTest, MethodWithCommaInReturnTypeWorks) {
443   MockStack<int> mock;
444 
445   const std::map<int, int> a_map;
446   EXPECT_CALL(mock, ReturnTypeWithComma())
447       .WillOnce(Return(a_map));
448   EXPECT_CALL(mock, ReturnTypeWithComma(1))
449       .WillOnce(Return(a_map));
450 
451   EXPECT_EQ(a_map, mock.ReturnTypeWithComma());
452   EXPECT_EQ(a_map, mock.ReturnTypeWithComma(1));
453 }
454 
455 #if GTEST_OS_WINDOWS
456 // Tests mocking template interfaces with calltype.
457 
458 template <typename T>
459 class StackInterfaceWithCallType {
460  public:
~StackInterfaceWithCallType()461   virtual ~StackInterfaceWithCallType() {}
462 
463   // Template parameter appears in function parameter.
464   STDMETHOD_(void, Push)(const T& value) = 0;
465   STDMETHOD_(void, Pop)() = 0;
466   STDMETHOD_(int, GetSize)() const = 0;
467   // Template parameter appears in function return type.
468   STDMETHOD_(const T&, GetTop)() const = 0;
469 };
470 
471 template <typename T>
472 class MockStackWithCallType : public StackInterfaceWithCallType<T> {
473  public:
MockStackWithCallType()474   MockStackWithCallType() {}
475 
476   MOCK_METHOD(void, Push, (const T& elem),
477               (Calltype(STDMETHODCALLTYPE), override));
478   MOCK_METHOD(void, Pop, (), (Calltype(STDMETHODCALLTYPE), override));
479   MOCK_METHOD(int, GetSize, (), (Calltype(STDMETHODCALLTYPE), override, const));
480   MOCK_METHOD(const T&, GetTop, (),
481               (Calltype(STDMETHODCALLTYPE), override, const));
482 
483  private:
484   GTEST_DISALLOW_COPY_AND_ASSIGN_(MockStackWithCallType);
485 };
486 
487 // Tests that template mock with calltype works.
TEST(MockMethodTemplateMockTestWithCallType,Works)488 TEST(MockMethodTemplateMockTestWithCallType, Works) {
489   MockStackWithCallType<int> mock;
490 
491   EXPECT_CALL(mock, GetSize())
492       .WillOnce(Return(0))
493       .WillOnce(Return(1))
494       .WillOnce(Return(0));
495   EXPECT_CALL(mock, Push(_));
496   int n = 5;
497   EXPECT_CALL(mock, GetTop())
498       .WillOnce(ReturnRef(n));
499   EXPECT_CALL(mock, Pop())
500       .Times(AnyNumber());
501 
502   EXPECT_EQ(0, mock.GetSize());
503   mock.Push(5);
504   EXPECT_EQ(1, mock.GetSize());
505   EXPECT_EQ(5, mock.GetTop());
506   mock.Pop();
507   EXPECT_EQ(0, mock.GetSize());
508 }
509 #endif  // GTEST_OS_WINDOWS
510 
511 #define MY_MOCK_METHODS1_                       \
512   MOCK_METHOD(void, Overloaded, ());            \
513   MOCK_METHOD(int, Overloaded, (int), (const)); \
514   MOCK_METHOD(bool, Overloaded, (bool f, int n))
515 
516 class MockOverloadedOnArgNumber {
517  public:
MockOverloadedOnArgNumber()518   MockOverloadedOnArgNumber() {}
519 
520   MY_MOCK_METHODS1_;
521 
522  private:
523   GTEST_DISALLOW_COPY_AND_ASSIGN_(MockOverloadedOnArgNumber);
524 };
525 
TEST(MockMethodOverloadedMockMethodTest,CanOverloadOnArgNumberInMacroBody)526 TEST(MockMethodOverloadedMockMethodTest, CanOverloadOnArgNumberInMacroBody) {
527   MockOverloadedOnArgNumber mock;
528   EXPECT_CALL(mock, Overloaded());
529   EXPECT_CALL(mock, Overloaded(1)).WillOnce(Return(2));
530   EXPECT_CALL(mock, Overloaded(true, 1)).WillOnce(Return(true));
531 
532   mock.Overloaded();
533   EXPECT_EQ(2, mock.Overloaded(1));
534   EXPECT_TRUE(mock.Overloaded(true, 1));
535 }
536 
537 #define MY_MOCK_METHODS2_ \
538     MOCK_CONST_METHOD1(Overloaded, int(int n)); \
539     MOCK_METHOD1(Overloaded, int(int n))
540 
541 class MockOverloadedOnConstness {
542  public:
MockOverloadedOnConstness()543   MockOverloadedOnConstness() {}
544 
545   MY_MOCK_METHODS2_;
546 
547  private:
548   GTEST_DISALLOW_COPY_AND_ASSIGN_(MockOverloadedOnConstness);
549 };
550 
TEST(MockMethodOverloadedMockMethodTest,CanOverloadOnConstnessInMacroBody)551 TEST(MockMethodOverloadedMockMethodTest, CanOverloadOnConstnessInMacroBody) {
552   MockOverloadedOnConstness mock;
553   const MockOverloadedOnConstness* const_mock = &mock;
554   EXPECT_CALL(mock, Overloaded(1)).WillOnce(Return(2));
555   EXPECT_CALL(*const_mock, Overloaded(1)).WillOnce(Return(3));
556 
557   EXPECT_EQ(2, mock.Overloaded(1));
558   EXPECT_EQ(3, const_mock->Overloaded(1));
559 }
560 
TEST(MockMethodMockFunctionTest,WorksForVoidNullary)561 TEST(MockMethodMockFunctionTest, WorksForVoidNullary) {
562   MockFunction<void()> foo;
563   EXPECT_CALL(foo, Call());
564   foo.Call();
565 }
566 
TEST(MockMethodMockFunctionTest,WorksForNonVoidNullary)567 TEST(MockMethodMockFunctionTest, WorksForNonVoidNullary) {
568   MockFunction<int()> foo;
569   EXPECT_CALL(foo, Call())
570       .WillOnce(Return(1))
571       .WillOnce(Return(2));
572   EXPECT_EQ(1, foo.Call());
573   EXPECT_EQ(2, foo.Call());
574 }
575 
TEST(MockMethodMockFunctionTest,WorksForVoidUnary)576 TEST(MockMethodMockFunctionTest, WorksForVoidUnary) {
577   MockFunction<void(int)> foo;
578   EXPECT_CALL(foo, Call(1));
579   foo.Call(1);
580 }
581 
TEST(MockMethodMockFunctionTest,WorksForNonVoidBinary)582 TEST(MockMethodMockFunctionTest, WorksForNonVoidBinary) {
583   MockFunction<int(bool, int)> foo;
584   EXPECT_CALL(foo, Call(false, 42))
585       .WillOnce(Return(1))
586       .WillOnce(Return(2));
587   EXPECT_CALL(foo, Call(true, Ge(100)))
588       .WillOnce(Return(3));
589   EXPECT_EQ(1, foo.Call(false, 42));
590   EXPECT_EQ(2, foo.Call(false, 42));
591   EXPECT_EQ(3, foo.Call(true, 120));
592 }
593 
TEST(MockMethodMockFunctionTest,WorksFor10Arguments)594 TEST(MockMethodMockFunctionTest, WorksFor10Arguments) {
595   MockFunction<int(bool a0, char a1, int a2, int a3, int a4,
596                    int a5, int a6, char a7, int a8, bool a9)> foo;
597   EXPECT_CALL(foo, Call(_, 'a', _, _, _, _, _, _, _, _))
598       .WillOnce(Return(1))
599       .WillOnce(Return(2));
600   EXPECT_EQ(1, foo.Call(false, 'a', 0, 0, 0, 0, 0, 'b', 0, true));
601   EXPECT_EQ(2, foo.Call(true, 'a', 0, 0, 0, 0, 0, 'b', 1, false));
602 }
603 
TEST(MockMethodMockFunctionTest,AsStdFunction)604 TEST(MockMethodMockFunctionTest, AsStdFunction) {
605   MockFunction<int(int)> foo;
606   auto call = [](const std::function<int(int)> &f, int i) {
607     return f(i);
608   };
609   EXPECT_CALL(foo, Call(1)).WillOnce(Return(-1));
610   EXPECT_CALL(foo, Call(2)).WillOnce(Return(-2));
611   EXPECT_EQ(-1, call(foo.AsStdFunction(), 1));
612   EXPECT_EQ(-2, call(foo.AsStdFunction(), 2));
613 }
614 
TEST(MockMethodMockFunctionTest,AsStdFunctionReturnsReference)615 TEST(MockMethodMockFunctionTest, AsStdFunctionReturnsReference) {
616   MockFunction<int&()> foo;
617   int value = 1;
618   EXPECT_CALL(foo, Call()).WillOnce(ReturnRef(value));
619   int& ref = foo.AsStdFunction()();
620   EXPECT_EQ(1, ref);
621   value = 2;
622   EXPECT_EQ(2, ref);
623 }
624 
TEST(MockMethodMockFunctionTest,AsStdFunctionWithReferenceParameter)625 TEST(MockMethodMockFunctionTest, AsStdFunctionWithReferenceParameter) {
626   MockFunction<int(int &)> foo;
627   auto call = [](const std::function<int(int& )> &f, int &i) {
628     return f(i);
629   };
630   int i = 42;
631   EXPECT_CALL(foo, Call(i)).WillOnce(Return(-1));
632   EXPECT_EQ(-1, call(foo.AsStdFunction(), i));
633 }
634 
635 
636 struct MockMethodSizes0 {
637   MOCK_METHOD(void, func, ());
638 };
639 struct MockMethodSizes1 {
640   MOCK_METHOD(void, func, (int));
641 };
642 struct MockMethodSizes2 {
643   MOCK_METHOD(void, func, (int, int));
644 };
645 struct MockMethodSizes3 {
646   MOCK_METHOD(void, func, (int, int, int));
647 };
648 struct MockMethodSizes4 {
649   MOCK_METHOD(void, func, (int, int, int, int));
650 };
651 
TEST(MockMethodMockFunctionTest,MockMethodSizeOverhead)652 TEST(MockMethodMockFunctionTest, MockMethodSizeOverhead) {
653   EXPECT_EQ(sizeof(MockMethodSizes0), sizeof(MockMethodSizes1));
654   EXPECT_EQ(sizeof(MockMethodSizes0), sizeof(MockMethodSizes2));
655   EXPECT_EQ(sizeof(MockMethodSizes0), sizeof(MockMethodSizes3));
656   EXPECT_EQ(sizeof(MockMethodSizes0), sizeof(MockMethodSizes4));
657 }
658 
659 }  // namespace gmock_function_mocker_test
660 }  // namespace testing
661