Fix the two bugs

src/main/java/fr/univnantes/trainreservation/impl/TicketImpl.java

@@ -42,7 +42,7 @@ public class TicketImpl implements Ticket {
         if (this.getTrip().getOrigin() != trip.getOrigin()
                 || this.getTrip().getDestination() != trip.getDestination()
                 || this.getTrip().isCancelled()
-                || this.getTrip().getPlannedDepartureTime().isBefore(trip.getPlannedDepartureTime())
+                || this.getTrip().getPlannedDepartureTime().isAfter(trip.getPlannedDepartureTime())
         ) {
             throw new ReservationException();
         }

src/main/java/fr/univnantes/trainreservation/impl/TicketReservationSystemImpl.java

@@ -162,7 +162,7 @@ public class TicketReservationSystemImpl implements TicketReservationSystem {
 
     @Override
     public List<Trip> findOrderedTripsOfTrain(Train train) {
-        return trips.stream().sorted((t1, t2) -> t1.findRealArrivalTime().isBefore(t2.findRealDepartureTime()) ? -1 : 1).collect(Collectors.toList());
+        return trips.stream().filter((someTrain -> someTrain == train)).sorted((t1, t2) -> t1.findRealArrivalTime().isBefore(t2.findRealDepartureTime()) ? -1 : 1).collect(Collectors.toList());
     }
 
     @Override