Guice + Mockito

[Ari King]

How can I mock injected dependencies in JUnit tests? Thanks.

[Stephan Classen]

see: https://groups.google.com/forum/#!topic/google-guice/NEkahqnpY4k

On 11/04/2013 05:09 PM, Ari King wrote:
> How can I mock injected dependencies in JUnit tests? Thanks.

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[Peter Reilly]

I use constructor injection and the injected objects are mockito objects.

To help things a little with using @Mock attributes I have a simple base test class:

public class MockedTester {

    public MockedTester() {

        MockitoAnnotations.initMocks(this);

    }

}

public class DomainBlackListTest extends MockedTester {

   @Mock public EventBus eb;
   @Mock public EventBusSingleton eventBus;

   @Before public void initMocks() {

       when(eventBus.getEventBus())

           .thenReturn(eb);

   }

   @Test public void simple() {

      DomainBlackList d = new DomainBlackList(eventBus);

      .....

   }

}

On Mon, Nov 4, 2013 at 9:15 AM, Stephan Classen <st.cl...@gmx.ch> wrote:

see: https://groups.google.com/forum/#!topic/google-guice/NEkahqnpY4k

On 11/04/2013 05:09 PM, Ari King wrote:

How can I mock injected dependencies in JUnit tests? Thanks.
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[y...@collectivehealth.com]

5 years late to the party. I ended up implementing my own library at my current company: https://eng.collectivehealth.com/introducing-testmodule-bdab286f12db.

[David Nouls]

Never tried Jukito ? works great.

        Collective Health introduces the Employer-Driven Healthcare Economy

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[y...@collectivehealth.com]

The problem seemed simple enough, so I didn't bother looking for an existing solution. It took less than a day and two iterations to get everything I needed into the custom library. Of course, it took a lot longer to make it look prettier. :)

[David Nouls]

I had something similar implemented a few years ago. Indeed not difficult to do.

But I switched to Jukito because it offers a few advanced features:

- Interfaces and abstract classes are automatically mocked (as a singleton). In many cases you don’t need to define any binding if you use interfaces for your injected dependencies.

- you can have parameters on your test methods and these parameters are automatically injected. This can even work on @Before methods.

- Uses annotations to provide the modules to use (that would allow defining your own bindings).

Groeten,

David

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[y...@collectivehealth.com]

Thank you for the suggestion, I'll take a look at it.