Mocked interface method call does not return as expected

[bkalya...@gmail.com]

Hi,

I have an interface as follows:

public interface ServiceHandler

{

   MyDTO<AddressDTO> getAllCopies(String status, Long id);

  ......

}

I have a spring component as follows:

public class Publisher

{

    private final ServiceHandler serviceHandler;

    @Autowired

    public Publisher(ServiceHandler serviceHandler)

    {

       this.serviceHandler = serviceHandler;

    }

   

    @Transactional

    public void publishNow(Long id)

    {

        MyDTO<AddressDTO> mydto = serviceHandler.getAllCopies(Constants.MY_STATUS, id);

        .......

     }

}

My Spock testing groovy class is as follows:

class MySpockTest extends Specification

{

   private ServiceHandler serviceHandler = Mock(ServiceHandler)

   private Publisher publisher

   def setup()

   {

      publisher = new Publisher(serviceHandler)

   }

   def 'My Test'()

   {

      given:

      long id = 1L

      serviceHandler.getAllCopies(_) >> new MyDTO<AddressDTO>() //This should return MyDTO object but, it is returning NULL when I run the test in Publisher class

      when:

      publisher.publishNow(id)

      then:

      1 * serviceHandler.getAllCopies(id)

   }

}

As mentioned in my comment above, instead of returning MyDTO object, it is returning null. Somehow, it is not returning the stubbed value.

Can someone help me what is wrong?

Thank you.

[Kostis Kapelonis]

Hello

Unlike Mockito (which stubs and verifies in different statements),
Spock performs both stubbing and verifying of a mock in a single
statement.

I admit I did not run your code but it should probably work if you
modify the "then:" statement as bellow

1 * serviceHandler.getAllCopies(id) >> new MyDTO<AddressDTO>()

(and of course delete the stubbing method before the "when" block")

Kostis

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