I'm trying to get familiar with TDD and the Presenter First Pattern. Right now I'm stuck writing a test case for my Presenter.class. My goal is to cover the whole Presenter.class including the Action Event but I have no glue how to do it with Mockito.
Presenter.class:
public class Presenter {
IModel model;
IView view;
public Presenter(final IModel model, final IView view) {
this.model = model;
this.view = view;
this.model.addModelChangesListener(new AbstractAction() {
public void actionPerformed(ActionEvent arg0) {
view.setText(model.getText());
}
});
}}
IView.class:
public interface IView {
public void setText(String text);
}
IModel.class:
public interface IModel {
public void setText();
public String getText();
public void whenModelChanges();
public void addModelChangesListener(AbstractAction action);
}
PresenterTest.class:
@RunWith(MockitoJUnitRunner.class)
public class PresenterTest {
@Mock
IView view;
@Mock
IModel model;
@Before
public void setup() {
new Presenter(model, view);
}
@Test
public void test1() {
}
}
Thanks in advance!
At first... thank you guys!
After a while i figured out this solution and stuck to it because I don't wanted to implement any interfaces at the presenter class neither I wanted to create stub classes in my tests.
IView
public interface IView {
public void setText(String text);
}
IModel
public interface IModel {
public String getText();
public void addModelChangeListener(Action a);
}
Presenter
public class Presenter {
private IModel model;
private IView view;
public Presenter(final IModel model, final IView view) {
this.model = model;
this.view = view;
model.addModelChangeListener(new AbstractAction() {
public void actionPerformed(ActionEvent e) {
view.setText(model.getText());
}
});
}
}
PresenterTest
@RunWith(MockitoJUnitRunner.class)
public class PresenterTest {
@Mock
IView view;
@Mock
IModel model;
@Test
public void when_model_changes_presenter_should_update_view() {
ArgumentCaptor<Action> event = ArgumentCaptor.forClass(Action.class);
when(model.getText()).thenReturn("test-string");
new Presenter(model, view);
verify(model).addModelChangeListener(event.capture());
event.getValue().actionPerformed(null);
verify(view).setText("test-string");
}
}