Function in DoMemberFunctionInstead could not be found [closed]

Hello everyone,

I just started with writing a test using Isolator++. I installed it like described in the documentation and tried to write a test. Unfortunately it didn't work so I tried the example from the document of DoInstead:

class Person

{

private:

   static int groupID;

public:

   int GetAge() { return 0; }

   static int GetAverageAge() { return 0; } 

   static bool IsPartOfGroup(int newGroupID) { return false; }

};

 class AltPerson

{

public:

   int ReturnAnotherAge() { return 10; }

   static int ReturnAnotherAverageAge() { return 20; } 

};

TEST_F(Examples, DoInsteadForInstanceMethod)

{

   Person* livePerson = new Person();        

   AltPerson* altPerson = new AltPerson();

     WHEN_CALLED(livePerson->GetAge()).DoMemberFunctionInstead(altPerson,ReturnAnotherAge);

    ASSERT_EQ(10, livePerson->GetAge());

    ISOLATOR_CLEANUP();

}

I get the same error message than with my own classes:

The function 'AltPerson::ReturnAnotherAge' could not be found. If the method is not called in the code under test it will be optimized away. Remove any inline keywords, and Add ISOLATOR_TESTABLE to the method.

What might be the problem? What am I doing wrong?

Is ISOLATOR_TESTABLE neccessary in each method?

I use it with google test and have installed the newest version. Do you need any further information?

Thanks a lot in advance,

Michaela