Mockito mocking won't work for this method. Am I doing something wrong?

Question

I'm current using mockito 1.8.4 in this spring mvc application. Here is the code for the class/method I am trying to test.

public class CompleteTaskController implements IController {
    public static Logger log = Logger.getLogger(CompleteTaskController.class);

@Override
public void handle() {
    GUIFactory gf = new GUIFactory();
    IDatabasePullListOfUsers pull = new OraclePullListOfUsers();
    IDatabaseUserManagement manage = OracleUserManagement.getInstance();

    gf.makeGUI("completeTask", pull.pullAssignedRequests(GUIFactory.userLoggedIn));
    manage.completeTask(gf.getRequestID(), GUIFactory.userLoggedIn);
    gf.makeCustomGUI("Task has been completed");
    log.fatal(GUIFactory.userLoggedIn + " has completed the task of request id " + gf.getRequestID());
    gf.makeGUI("adminpanel");

}

}

so far, all the tests pass BUT the last one - which I just can't seem to understand why. Here is the code for my tests:

public class CompleteTaskControllerTest {

    @Test
    public void testHandleCallsMakeGUIAndPassesItPullAssignedRequestsAndAString(){
        CompleteTaskController mockCtc = mock(CompleteTaskController.class);
        GUIFactory mockGf = mock(GUIFactory.class);
        IDatabasePullListOfUsers mockPull = mock(OraclePullListOfUsers.class);

        mockCtc.handle();

        verify(mockGf).makeGUI("test", mockPull.pullAssignedRequests("test"));
    }

    @Test
    public void testHandleCallsCompleteTaskAndPassesItGetRequestIDAndAString(){
        CompleteTaskController mockCtc = mock(CompleteTaskController.class);
        IDatabaseUserManagement mockManage = mock(OracleUserManagement.class);
        GUIFactory mockGf = mock(GUIFactory.class);

        mockCtc.handle();
        when(mockGf.getRequestID()).thenReturn(1);

        verify(mockManage).completeTask(mockGf.getRequestID(),"Test");
    }

    @Test
    public void testHandleCallsMakeCustomGUIAndPassesItAString(){
        CompleteTaskController mockCtc = mock(CompleteTaskController.class);
        GUIFactory mockGf = mock(GUIFactory.class);

        mockCtc.handle();

        verify(mockGf).makeCustomGUI("test");
    }
}

Sorry for throwing all this code at you - the only test I am having issues with is the third test - which is trying to mock the gf.makeCustomGUI("Task has been completed") method!

Answer 1

With the statement

verify(mockGf).makeCustomGUI("test");

are you trying to verify whether the "makeCustomerGUI" has been called with argument "test". And if that is your requirement, you can do that as below:

GUIFactory mockGf = mock(GUIFactory.class);
mockGf.makeCustomerGUI("test");
verify(mockGf).makeCustomGUI("test");

Once your mock object is created, Mockito will remember all invocations on it. So you can selectively verify the invocations.