CODEWITHSUNDEEP
c++interfacemocking
Simon Symon
Simon Symon

Reputation: 45

google Mock class seems to not implement

I'm new to google mock and I'm trying to mock an interface, but keep getting a linker error with undefined symbols for architecture x86_64

Here's my simplified code:

I have the following in a .h file:

namespace Mynamespace
{    
    class IMyInterface
    {
    public:
        virtual ~ IMyInterface() {};

        virtual void myFunction() = 0;

    };
}

this in another .h file:

#include <gmock/gmock.h>
#include <IMyInterface.h>

namespace testing
{
    class MyClassMock : public IMyInterface
    {
    public:
        ~ MyClassMock();
        MyClassMock(int, int, int);

        MOCK_METHOD0(myFunction, void());
    };
}

and this in my Test Case .cpp file:

#include <gmock/gmock.h>
#include <gtest/gtest.h>
#include <IMyInterface.h>

namespace testing
{
    TEST(MyClassMock, myFunction)
    {
        MyClassMock mcm(0,0,0);
    }
}

Do you have an idea what am I doing wrong? Any help would be very much appreciated!

cheers, Simon

EDIT:

Unfortunately the mock still doesn't seem to work. After I added the implementation like this:

namespace testing
{
    MyClassMock:: MyClassMock(int a, int b, int c)
    {
    }

    MyClassMock::~ MyClassMock()
    {
    }
}

"myFunction" will not be called when I do

#include "MyClassMock.h"
#include <gmock/gmock.h>
#include <gtest/gtest.h>
using ::testing::AtLeast;
using namespace testing;

    TEST(MyClassTest, canCallFunction)
    {
        MyClassMock mock(0,0,0);
        EXPECT_CALL(mock, myFunction())
            .Times(AtLeast(1));
    }

returning: EXPECT_CALL(mock, myFunction()) Expected: to be called at least once Actual: never called - unsatisfied and active

Upvotes: 1

Views: 787

Answers (1)

Sid S
Sid S

Reputation: 6125

You have to provide implementations for MyClassMock::MyClassMock(int, int, int) and MyClassMock::~MyClassMock().

On a side not, you should use "" rather than <> when you #include your own headers. E.g. #include "IMyInterface.h" not #include <IMyInterface.h>. That way, the compiler will search in the current directory prior to the system include path.

Upvotes: 1

Related Questions