The mock function has no default action set, and its return type has no default value set

[vdevarap]

Hi,

I am using G mock and g test to unit test my code.

I did not expect a call to one of the mock methods. so i used Nice
Mock to avoid the warning.
still the test is failing with the below error:

: Failure

The mock function has no default action set, and its return type
has no default value set.
Aborted


any help is appreciated.



Regards,
vdevarap

[Amanda Robinson]

If you expect no call, then you should test for that and use StrictMock.

If you don't care, you still need to set a default response:

ON_CALL(MockClass, DoSomething(int))

  .WillRepeatedly(Return(0));

[vdevarap]

Hi Amanda,

Thanks for quick reply.

i tried doing what you have suggested but still it is throwing the
same error.

I have mocked methods in my interface class which is abstract.

now in one of the tests i expect a call to my mock method which
returns a reference to other interface method.

how can i test this scenario.

here is the sample code:

class iface_a
{
public:
virtual ~iface_a() {};
virtual pthmgmt::iface_b& Getiface_b() =0;
};

class mock_iface_a : public iface_a
{
public:
virtual ~mock_iface_a() { };

MOCK_METHOD0(Getiface_b, pthgmt::iface_b&());

};


now when i am trying to check the invocation as below:

EXPECT_CALL(obj_mock_iface_a, Getiface_b)
.Times(Atleast(1));



this is throwing the error i mentioned earlier.
the test is aborted with message:

"The mock function has no default action set, and its return type has
no default value set."

Could you be of any help?

--vdevarap

On Jul 8, 4:58 pm, Amanda Robinson <amandarobin...@google.com> wrote:
> If you expect no call, then you should test for that and use StrictMock.
>
> If you don't care, you still need to set a default response:
> ON_CALL(MockClass, DoSomething(int))
>   .WillRepeatedly(Return(0));
>

[Vlad Losev]

Hi Vdevarap,

Because iface_b is not a built-in type, Google Mock does not know what its default value is. You need to supply a default value yourself. See http://code.google.com/p/googlemock/wiki/CookBook#Setting_the_Default_Value_for_a_Return_Type for details.

--vdevarap

On Jul 8, 4:58 pm, Amanda Robinson <amandarobin...@google.com> wrote:
> If you expect no call, then you should test for that and use StrictMock.
>
> If you don't care, you still need to set a default response:
> ON_CALL(MockClass, DoSomething(int))
>   .WillRepeatedly(Return(0));
>

> On Thu, Jul 8, 2010 at 12:59 PM, vdevarap <dvgo...@gmail.com> wrote:
>
> > Hi,
>
> > I am using G mock and g test to unit test my code.
>
> > I did not expect a call to one of the mock methods. so i used Nice
> > Mock to avoid the warning.
> > still the test is failing with the below error:
>
> > : Failure
>
> >    The mock function has no default action set, and its return type
> > has no default value set.
> > Aborted
>
> > any help is appreciated.
>
> > Regards,
> > vdevarap
>
>

-- Vlad

[Amanda Robinson]

Check out the doc on Actions, as that's what it's expecting:

http://code.google.com/p/googlemock/wiki/ForDummies#Actions:_What_Should_It_Do?

For any mocked method that returns something, you need to tell it what to return. Here it looks like you want to return an iface_b (either a real or mocked one).

On Thu, Jul 8, 2010 at 2:42 PM, vdevarap <dvg...@gmail.com> wrote:

[vdevarap]

Hi Amanda and Vlad,

Thanks for your replies. I understand now. what you suggested is
right. i have to return a reference to the mock object of iface_b. i
was not using proper action.

Returning Reference from mock methods section solved my problem.
http://code.google.com/p/googlemock/wiki/CookBook#Using_Actions


Thanks,
Vdevarap



On Jul 8, 6:22 pm, Amanda Robinson <amandarobin...@google.com> wrote:
> Check out the doc on Actions, as that's what it's expecting:http://code.google.com/p/googlemock/wiki/ForDummies#Actions:_What_Sho...
> ?

>
> For any mocked method that returns something, you need to tell it what to
> return. Here it looks like you want to return an iface_b (either a real or
> mocked one).
>