@Test
public void not_return_any_trips_when_users_are_not_friends() {
User friend = UserBuilder.aUser().friendsWith(ANOTHER_USER).withTrips(TO_BRAZIL).build();
List<Trip> friendTrips = tripService.getTripsByUser(friend, REGISTERED_USER);
// You must always begin writing the assert.
// Remember: the assert must match the unit test method's name!!
// In this case, no trips must be returned.
assertThat(friendTrips.size(), is(0));
}
@Test(expected = UserNotLoggedInException.class)
public void throw_an_exception_when_user_is_not_logged_in() {
tripService.getTripsByUser(UNUSED_USER, GUEST);
}