android - Mockito AbstractMethodError on initMocks

Question

So I've been struggling pretty much all day trying to get Mockito to work for my Android project. I added everything to my Gradle build file:

androidTestCompile 'org.mockito:mockito-core:2.0.29-beta'
androidTestCompile "junit:junit:4.12-beta-3"
androidTestCompile 'com.google.dexmaker:dexmaker:1.2'
androidTestCompile 'com.google.dexmaker:dexmaker-mockito:1.2'

and have tried running a test that doesn't really do anything:

@RunWith(MockitoJUnitRunner.class)
public class LoginActivityTest extends 
    ActivityInstrumentationTestCase2<LoginActivity> {

    private LoginActivity loginActivity;

    private EditText et_email;
    private EditText et_password;
    private Button btn_login;

    @Mock
    SpiceManager manager;

    public LoginActivityTest(){
        super(LoginActivity.class);
    }

    @Override
    public void setUp() throws Exception {
        super.setUp();
        loginActivity = getActivity();

        MockitoAnnotations.initMocks(this);
        //manager = mock(SpiceManager.class);
        loginActivity.spiceManager = manager;

        et_email = (EditText) loginActivity.findViewById(R.id.et_email);
        et_password = (EditText) loginActivity.findViewById(R.id.et_password);
        btn_login = (Button) loginActivity.findViewById(R.id.btn_login);
    }

    @Override
    public void tearDown() throws Exception {
        super.tearDown();
    }

    public void testLoginEmpty() throws Exception {        
        verify(manager).execute(
            any(LoginRequest.class), 
            anyString(), 
            anyLong(), 
            any(LoginActivity.LoginRequestListener.class));
    }
}

The reason I want to mock the service is because I would like to keep the network part out the test. There's no need to actually send a network request for a simple test, right?

Anyhow, the app builds but when the actual test starts running it fails (or rather crashes) with an AbstractMethodError:

Running tests
Test running started
java.lang.AbstractMethodError: abstract method     
    "org.mockito.plugins.MockMaker$TypeMockability 
    org.mockito.plugins.MockMaker.isTypeMockable(java.lang.Class)"

at org.mockito.internal.util.MockUtil.typeMockabilityOf(MockUtil.java:26)
at org.mockito.internal.util.MockCreationValidator.validateType(MockCreationValidator.java:21)
at org.mockito.internal.creation.MockSettingsImpl.validatedSettings(MockSettingsImpl.java:167)
at org.mockito.internal.creation.MockSettingsImpl.confirm(MockSettingsImpl.java:161)
at org.mockito.internal.MockitoCore.mock(MockitoCore.java:58)
at org.mockito.Mockito.mock(Mockito.java:1410)
at org.mockito.Mockito.mock(Mockito.java:1288)
at be.sanmax.membr.activities.LoginActivityTest.setUp(LoginActivityTest.java:50)
at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:191)
at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:176)
at android.test.InstrumentationTestRunner.onStart(InstrumentationTestRunner.java:555)
at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1837)

This strikes me as odd since the SpiceManager class does not contain any abstract methods. It is, however, part of some package that I didn't write (com.octo.android.robospice). But that shouldn't be an issue. Should it?

And if that is the issue, how could I go about factoring it out from any tests? I only want to test the working of the app, not the network connection...

Answer 1

Dexmaker does not support Mockito 2.0 since the definition of MockMaker has changed. I suggest you use Mockito 1.10.19 but then you will run into this NPE for which I have submitted a fix.

Looks like my fix is now merged into dexmaker as of version 1.5