① 修改mockcpp的接口文件（追加一个宏），在mokc.h中追加MOCKER_CPP宏：

#define MOCKER_CPP(api, TT) MOCKCPP_NS::mockAPI(#api, reinterpret_cast<TT>(api))

② 使用例子：

#ifndef SAMPLE_H
#define SAMPLE_H

#include <gtest/gtest.h>
#include <mockcpp/mockcpp.hpp>
#include <memory>

using namespace std;

class ICalc
{
public:
  virtual ~ICalc() {};
  virtual int add(int a, int b) = 0;
  virtual int add4(int a, int b) = 0;
};

class CalcImpl
  : public ICalc
{
public:
  virtual int add(int a, int b) {
    return a + b;
  }

  virtual int add4(int a, int b) {
    return a + b;
  }

  static int add2(int a, int b) {
    return a + b;
  }

  int add3(int a, int b) {
    return a + b;
  }

};

class CalcImpl2
  : public ICalc
{
public:
  virtual int add(int a, int b) {
    return a + b;
  }

  virtual int add4(int a, int b) {
    return a + b;
  }

  static int add2(int a, int b) {
    return a + b;
  }

  int add3(int a, int b) {
    return a + b;
  }

  int add3(int a, int b, int c) {
    return a + b + c;
  }

};

class TestUse
{
  public:
    int add(int a, int b) {
      calc.add3(a, b);
    }

    char* getData() {
      char* sd = (char *)malloc(sizeof(char) * 100);
      return sd;
    }

    CalcImpl calc;
    CalcImpl calc2;
};

class CalcTest : public testing::Test
{
protected:
    CalcTest() = default;
    ~CalcTest() = default;

    virtual void SetUp() override
    {
    }

    virtual void TearDown() override
    {
    }
};

// 测试纯虚类中的纯虚函数
TEST_F(CalcTest, test_xxx_001)
{
  MockObject<ICalc> calc;
  MOCK_METHOD(calc, add)
    .stubs()
    .will(returnValue(11));
  EXPECT_EQ(11, calc->add(1, 1));
  GlobalMockObject::verify();
}

// 测试纯虚类中的纯虚函数
TEST_F(CalcTest, test_xxx_002)
{
  MockObject<CalcImpl> calc;
  MOCK_METHOD(calc, add)
    .stubs()
    .will(returnValue(11));
  EXPECT_EQ(11, calc->add(1, 1));
  GlobalMockObject::verify();
}

// 测试类中的static函数
TEST_F(CalcTest, test_xxx_003)
{
  MOCKER(&CalcImpl::add2)
    .stubs()
    .will(returnValue(11));

  EXPECT_EQ(11, CalcImpl::add2(1, 1));
  GlobalMockObject::verify();
}

// 测试已存在对象中的虚函数函数mock
TEST_F(CalcTest, test_xxx_004)
{
  // add4和add为虚函数，第一个为this指针
  CalcImpl impl;
  MOCKER_CPP(&CalcImpl::add4, int (*)(CalcImpl*, int, int))
    .stubs()
    .will(returnValue(11));

  MOCKER_CPP(&CalcImpl::add, int (*)(CalcImpl*, int, int))
    .expects(once())
    .with(any(), eq(1), eq(1))
    .will(returnValue(222));

  EXPECT_EQ(11, impl.add4(1, 1));
  EXPECT_EQ(222, impl.add(1, 1));
  GlobalMockObject::verify();
}

// 测试已存在对象中的成员函数mock
TEST_F(CalcTest, test_xxx_005)
{
  CalcImpl impl;
  MOCKER_CPP(&CalcImpl::add3, int (*)(CalcImpl*, int, int))
    .expects(once())
    .with(any(), eq(1), eq(1))
    .will(returnValue(11));

  EXPECT_EQ(11, impl.add3(1, 1));
  GlobalMockObject::verify();
}

// 测试嵌套调用对象中的成员函数mock(开启mock)
TEST_F(CalcTest, test_xxx_006)
{
  TestUse tu;
  MOCKER_CPP(&CalcImpl::add3, int (*)(CalcImpl*, int, int))
    .expects(once())
    .with(eq(&tu.calc), eq(1), eq(1))
    .will(returnValue(11));

  EXPECT_EQ(11, tu.add(1, 1));
  GlobalMockObject::verify();
}

// 测试嵌套调用对象中的成员函数mock(关闭mock)
TEST_F(CalcTest, test_xxx_007)
{
  TestUse tu;
  EXPECT_EQ(2, tu.add(1, 1));
  GlobalMockObject::verify();
}

// 测试malloc的hook
//TEST_F(CalcTest, test_xxx_008)
//{
//  TestUse tu;
//  MOCKER(malloc)
//    .expects(once())
//    .will(returnValue(NULL));
//  GlobalMockObject::verify();
//}

// 测试嵌套调用对象中的成员函数mock(关闭mock)
TEST_F(CalcTest, test_xxx_009)
{
  TestUse tu;
  EXPECT_EQ(2, tu.add(1, 1));
  GlobalMockObject::verify();
}

// 测试只针对某个对象自己的虚函数mock
TEST_F(CalcTest, test_xxx_010)
{
  CalcImpl tu;
  CalcImpl2 tu2;
  int (CalcImpl::*pfn)(int, int) = &CalcImpl::add4;
  int (CalcImpl2::*pfn2)(int, int) = &CalcImpl2::add4;
  MOCKER_CPP(tu.*pfn, int (*)(CalcImpl*, int, int))
    .expects(once())
    .with(any(), eq(1), eq(1))
    .will(returnValue(11));

  printf("1: %p\n", (void*)(tu.*pfn));
  printf("2: %p\n", (void*)(tu2.*pfn2));

  EXPECT_EQ(11, tu.add4(1, 1));
  EXPECT_EQ(2, tu2.add4(1, 1));
  GlobalMockObject::verify();
}

// 测试重载的情况
TEST_F(CalcTest, test_xxx_011)
{
  CalcImpl2 tu2;
  int (CalcImpl2::*pfn)(int, int, int) = &CalcImpl2::add3;
  int (CalcImpl2::*pfn2)(int, int) = &CalcImpl2::add3;
  MOCKER_CPP(tu2.*pfn, int (*)(CalcImpl2*, int, int, int))
    .expects(once())
    .with(any(), eq(1), eq(1), eq(1))
    .will(returnValue(222));

  MOCKER_CPP(tu2.*pfn2, int (*)(CalcImpl2*, int, int))
    .expects(once())
    .with(any(), eq(1), eq(1))
    .will(returnValue(111));

  EXPECT_EQ(222, tu2.add3(1, 1, 1));
  EXPECT_EQ(111, tu2.add3(1, 1));
  GlobalMockObject::verify();
}

#endif