partial mock in mockito (plus @Injectmocks)?

[Yang Yang]

I have the following class:

public class Car {
    Engine engine;
    public void honk() {
       /// blahblah operations I want to mock out
    }
    public void drive() {
        honk();
        if ( engine.fire() ) {
            System.out.println("Started car");
        }
    }
}

now in my test code, I want to test the drive() method of Car, but I don't care about the details of honk(), so I want to mock out honk(); furthermore, I want to mock out engine, so I need to inject mocks for that.

here is my test:

public class CarTest {
    @InjectMocks
    Car spyCar = spy(new Car());
    @Mock
    Engine mockedEngine;
    @Test
    public void test() {
       when(mockedEngine.fire()).thenReturn(true);   /**********/
       spyCar.drive();
    }
}

the problem is that when the line above with "/**/" is called, the real impl (instead of mock) is called. where am I doing wrong?

thanks!

[Marcin Zajączkowski]

> the problem is that when the line above with "/****/" is called, the real

> impl (instead of mock) is called. where am I doing wrong?

What is called? The implementation of a method fire in a class Engine?
It would be strange.

I would expect to have a real honk() called in the line spyCar.drive()
(not the line before). To avoid this you have to stub honk method in
spyCar like:
doNothing().when(spyCar).honk();
before calling spyCar.drive().

Please remember when stubbing spies you have to use doXXX..when (or
willXXX..given) instead of when..thenXXX (given..willXXX) do prevent a
call of the real method on stubbing.

Marcin

--
http://blog.solidsoft.info/ - Working code is not enough
http://refcardz.dzone.com/refcardz/mockito - Mockito Refcard

[KARR, DAVID]

Do you have “@RunWith(MockitoJUnitRunner.class)” on the class?

 

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[Yang Yang]

I am using @RunWith(SpringJunit4Runner.class)   as I have to use Spring for some of my other classes

[tam tran minh]

the real method would be called instead of your expected mock because you forgot to put @Autowired for Engine engine

This should be:

public class Car {

    @Autowired
    Engine engine;
    public void honk() {
       /// blahblah operations I want to mock out
    }
    public void drive() {
        honk();
        if ( engine.fire() ) {
            System.out.println("Started car");
        }
    }
}

[KARR, DAVID]

To the original poster:

 

You need to have a “@Runwith(MockitoJUnitRunner.class)” annotation on the class declaration.  Otherwise your “@InjectMocks” annotation is just an annotation, with no behavior.

 

From: moc...@googlegroups.com [mailto:moc...@googlegroups.com] On Behalf Of tam tran minh

Sent: Tuesday, January 07, 2014 7:42 PM
To: moc...@googlegroups.com

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