gmock-function-mocker_test.cc
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gmock-function-mocker_test.cc
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	// 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-generated-function-mockers.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 "gmock/gmock.h"
	#include "gtest/gtest.h"

	// There is a bug in MSVC (fixed in VS 2008) that prevents creating a
	// mock for a function with const arguments, so we don't test such
	// cases for MSVC versions older than 2008.
	#if !GTEST_OS_WINDOWS \|\| (_MSC_VER >= 1500)
	# define GMOCK_ALLOWS_CONST_PARAM_FUNCTIONS
	#endif // !GTEST_OS_WINDOWS \|\| (_MSC_VER >= 1500)

	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;

	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;
	#ifdef GMOCK_ALLOWS_CONST_PARAM_FUNCTIONS
	virtual bool TakesConst(const int x) = 0;
	#endif // GMOCK_ALLOWS_CONST_PARAM_FUNCTIONS

	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;

	#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&));

	#ifdef GMOCK_ALLOWS_CONST_PARAM_FUNCTIONS
	MOCK_METHOD(bool, TakesConst, (const int)); // NOLINT
	#endif

	// 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>&)));

	#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);
	};
	#ifdef _MSC_VER
	# pragma warning(pop)
	#endif

	class MockMethodFunctionMockerTest : public testing::Test {
	protected:
	MockMethodFunctionMockerTest() : foo_(&mock_foo_) {}

	FooInterface* const foo_;
	MockFoo mock_foo_;
	};

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

	// Tests mocking a nullary function.
	TEST_F(MockMethodFunctionMockerTest, MocksNullaryFunction) {
	EXPECT_CALL(mock_foo_, Nullary())
	.WillOnce(DoDefault())
	.WillOnce(Return(1));

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

	// Tests mocking a unary function.
	TEST_F(MockMethodFunctionMockerTest, MocksUnaryFunction) {
	EXPECT_CALL(mock_foo_, Unary(Eq(2)))
	.Times(2)
	.WillOnce(Return(true));

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

	// Tests mocking a binary function.
	TEST_F(MockMethodFunctionMockerTest, MocksBinaryFunction) {
	EXPECT_CALL(mock_foo_, Binary(2, _))
	.WillOnce(Return(3));

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

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

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

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

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

	// Tests mocking a function that takes a const reference.
	TEST_F(MockMethodFunctionMockerTest, MocksFunctionWithConstReferenceArgument) {
	int a = 0;
	EXPECT_CALL(mock_foo_, TakesConstReference(Ref(a)))
	.WillOnce(Return("Hello"));

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

	#ifdef GMOCK_ALLOWS_CONST_PARAM_FUNCTIONS
	// Tests mocking a function that takes a const variable.
	TEST_F(MockMethodFunctionMockerTest, MocksFunctionWithConstArgument) {
	EXPECT_CALL(mock_foo_, TakesConst(Lt(10)))
	.WillOnce(DoDefault());

	EXPECT_FALSE(foo_->TakesConst(5));
	}
	#endif // GMOCK_ALLOWS_CONST_PARAM_FUNCTIONS

	// Tests mocking functions overloaded on the number of arguments.
	TEST_F(MockMethodFunctionMockerTest, MocksFunctionsOverloadedOnArgumentNumber) {
	EXPECT_CALL(mock_foo_, OverloadedOnArgumentNumber())
	.WillOnce(Return(1));
	EXPECT_CALL(mock_foo_, OverloadedOnArgumentNumber(_))
	.WillOnce(Return(2));

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

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

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

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

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

	TEST_F(MockMethodFunctionMockerTest, MocksReturnTypeWithComma) {
	const std::map<int, std::string> a_map;
	EXPECT_CALL(mock_foo_, ReturnTypeWithComma())
	.WillOnce(Return(a_map));
	EXPECT_CALL(mock_foo_, ReturnTypeWithComma(42))
	.WillOnce(Return(a_map));

	EXPECT_EQ(a_map, mock_foo_.ReturnTypeWithComma());
	EXPECT_EQ(a_map, mock_foo_.ReturnTypeWithComma(42));
	}

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

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

	// Tests mocking a unary function with calltype.
	TEST_F(MockMethodFunctionMockerTest, MocksUnaryFunctionWithCallType) {
	EXPECT_CALL(mock_foo_, CTUnary(Eq(2)))
	.Times(2)
	.WillOnce(Return(true))
	.WillOnce(Return(false));

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

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

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

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

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

	TEST_F(MockMethodFunctionMockerTest, MocksReturnTypeWithCommaAndCallType) {
	const std::map<int, std::string> a_map;
	EXPECT_CALL(mock_foo_, CTReturnTypeWithComma())
	.WillOnce(Return(a_map));

	EXPECT_EQ(a_map, mock_foo_.CTReturnTypeWithComma());
	}

	#endif // GTEST_OS_WINDOWS

	class MockB {
	public:
	MockB() {}

	MOCK_METHOD(void, DoB, ());

	private:
	GTEST_DISALLOW_COPY_AND_ASSIGN_(MockB);
	};

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

	{
	MockB b;
	b.DoB();
	}

	{
	MockB 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);
	};

	// Tests that template mock works.
	TEST(MockMethodTemplateMockTest, Works) {
	MockStack<int> 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());
	}

	TEST(MockMethodTemplateMockTest, MethodWithCommaInReturnTypeWorks) {
	MockStack<int> 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);
	};

	// Tests that template mock with calltype works.
	TEST(MockMethodTemplateMockTestWithCallType, Works) {
	MockStackWithCallType<int> 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))

	class MockOverloadedOnArgNumber {
	public:
	MockOverloadedOnArgNumber() {}

	MY_MOCK_METHODS1_;

	private:
	GTEST_DISALLOW_COPY_AND_ASSIGN_(MockOverloadedOnArgNumber);
	};

	TEST(MockMethodOverloadedMockMethodTest, CanOverloadOnArgNumberInMacroBody) {
	MockOverloadedOnArgNumber 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));
	}

	#if GTEST_HAS_STD_FUNCTION_
	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));
	}

	#endif // GTEST_HAS_STD_FUNCTION_

	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));
	};

	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));
	}

	} // namespace gmock_function_mocker_test
	} // namespace testing

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