A first pass at writing a unit test against onStop

SessionDetailPresnterTests.java

package com.google.samples.apps.iosched.test;

import com.google.samples.apps.iosched.service.CalendarSession;
import com.google.samples.apps.iosched.ui.RepositoryManager;
import com.google.samples.apps.iosched.ui.ServiceStarter;
import com.google.samples.apps.iosched.ui.sessiondetail.SessionDetailViewPresenter;
import com.google.samples.apps.iosched.ui.sessiondetail.SessionDetailViewTranslator;

import junit.framework.TestCase;

import static org.mockito.Matchers.any;
import static org.mockito.Matchers.anyLong;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;

/**
 * Created by MattDupree on 5/8/15.
 */
public class SessionDetailPresnterTests extends TestCase {


    public void testShouldLaunchAddSessionService() {

        //Arrange
        SessionDetailViewTranslator sessionDetailViewTranslator = mock(SessionDetailViewTranslator.class);

        RepositoryManager repositoryManager = mock(RepositoryManager.class);

        ServiceStarter serviceStarter = mock(ServiceStarter.class);

        long calendarId = 0;

        SessionDetailViewPresenter sessionDetailViewPresenter = new SessionDetailViewPresenter(sessionDetailViewTranslator,
                                                                                               repositoryManager,
                                                                                               serviceStarter,
                                                                                               calendarId);
        sessionDetailViewPresenter.onViewCreated(null);

        //Act
        sessionDetailViewPresenter.onViewStopped();

        //Assert
        verify(serviceStarter).startAddCalendarSessionService(anyLong(), any(CalendarSession.class));

    }

}