我在这里看到这个问题: Can googlemock mock method calls from within other method calls of the same class?
并尝试实施答案,但它对我不起作用。
我修改了链接问题实现以删除模拟ReturnInputPlus1()
,这是接受的答案所暗示的:
using ::testing::Invoke;
using ::testing::_;
using ::testing::Return;
class MyClass
{
public:
MyClass() : x(1) {}
virtual ~MyClass() {}
int ReturnInput(int x) { return x; }
int ReturnInputPlus1(int x) { return ReturnInput(x) + 1; }
private:
int x;
};
class MockMyClass : public MyClass
{
public:
MockMyClass()
{
ON_CALL(*this, ReturnInput(_)).WillByDefault(Invoke(&real, &MyClass::ReturnInput));
}
virtual ~MockMyClass() {}
MOCK_METHOD1(ReturnInput, int(int y));
private:
MyClass real;
};
TEST(MyClassTest, mockUseClassMethod)
{
MockMyClass mock;
EXPECT_CALL(mock, ReturnInput(_))
.WillOnce(Return(2));
EXPECT_EQ(3, mock.ReturnInputPlus1(1));
}
这仍然会返回相同的失败
/projects/tests/cpp/google-test/test.cpp:46: Failure
Expected: 3
To be equal to: mock.ReturnInputPlus1(1)
Which is: 2
/projects/tests/cpp/google-test/test.cpp:41: Failure
Actual function call count doesn't match EXPECT_CALL(mock, ReturnInput(_))...
Expected: to be called once
Actual: never called - unsatisfied and active
答案 0 :(得分:0)
如果没有在MyClass virtual中创建方法,我看不到一种将内部调用重定向到模拟行为的方法。
下面是一个有效的示例:
real
成员,该模拟仍在继承MyClass mock.MyClass::ReturnInputPlus1(1)
(qualified name lookup)并了解dynamic dispatch会导致MockMyClass的使用: :ReturnInput。class MyClass
{
public:
MyClass()
: m_x(1)
{
}
virtual ~MyClass() {}
virtual int ReturnInput(int x) { return x; }
virtual int ReturnInputPlus1(int x) { return ReturnInput(x) + 1; }
private:
int m_x;
};
class MockMyClass : public MyClass
{
public:
MockMyClass()
: MyClass()
{
ON_CALL(*this, ReturnInput(_)).WillByDefault(Invoke(this, &MyClass::ReturnInput));
}
virtual ~MockMyClass() {}
MOCK_METHOD1(ReturnInput, int(int y));
MOCK_METHOD1(ReturnInputPlus1, int(int y));
};
TEST(MyClassTest, mockUseClassMethod)
{
MockMyClass mock;
EXPECT_CALL(mock, ReturnInput(_)).WillOnce(Return(2));
EXPECT_EQ(3, mock.MyClass::ReturnInputPlus1(1));
}