googlemock：无法创建模拟 class 的对象

Question

我有一辆使用 speedInterface 的 class 汽车（上面有一个参考）。
现在我想用 Mock_SpeedInterface.

模拟 speedInterface

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

    virtual int GetSpeed(void) = 0;
};

class Mock_SpeedInterface : public speedInterface
{
public:
    MOCK_CONST_METHOD0(GetSpeed, int());
};

class Car 
{
public:
    Car(speedInterface& s) : Speedo(s) {}
    virtual ~Car() {}

    speedInterface& Speedo;
    ...

};
TEST(TestCar, Test1) {
    Mock_SpeedInterface mockSpeed;
...
}

尝试创建 mockSpeed 会导致以下编译器错误：

Error C2259 'Mock_SpeedInterface': cannot instantiate abstract class

恕我直言 class Mock_SpeedInterface 不是抽象 class 因为它 "implements" GetSpeed。为什么会出现此错误以及如何防止它？

Answer 1

似乎 MOCK_CONST_METHOD0(GetSpeed, int()); 是错误的。为了得到一个普通的答案，我将引用 OP 的评论：

Changing it to MOCK_METHOD0 fix it.

googlemock：无法创建模拟 class 的对象

googlemock: object of mocked class cannot be created

c++

googlemock