@Test
public void return_friend_trips_when_users_are_friends() {
User friend =
UserBuilder.aUser()
.friendsWith(ANOTHER_USER, REGISTERED_USER)
.withTrips(TO_BRAZIL, TO_BERLIN)
.build();
given(tripDAO.tripsBy(friend)).willReturn(friend.trips());
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(2));
}
public List<Trip> getTripsByUser(User user, User loggedInUser) throws UserNotLoggedInException {
if (loggedInUser == null) {
throw new UserNotLoggedInException();
}
return user.isFriendWith(loggedInUser) ? tripsBy(user) : noTrips();
}