easy mock's expect method gives test result passed at even false tests

I am using easymock to test my class. After writing codes, I find out that every test succeeds even give wrong inputs. From the forums in the stack overflow, I have seen that it could be avoided by using replay method but it even succeeds when I use replay as well. I dont know what I am doing wrong? Could you please look at the code and tell me If I have to do any more things to make test fail ? I think test is not working ..

Regards Alper

    service = EasyMock.createMock(MyService.class);
    menu = EasyMock.createMock(ISPFMenu.class);
    menu.setName("name");
    menu.setTitle("title");

       EasyMock.expect(service.createLinesToParseEasyMock(menu)).andReturn(null);
    EasyMock.replay(servce);