should not create itinerary when final airport is null

src/test/java/hs/fulda/de/ci/exam/project/FrontDeskOfficerTest.java

@@ -31,4 +31,12 @@ public class FrontDeskOfficerTest {
             frontDeskOfficer.createItinerary(null, airport_be, new Date());
         });
     }
+
+    @Test
+    @DisplayName("Should Not Create Itinerary when Destination Airport is null")
+    public void shouldThrowRuntimeExceptionWhenFinalAirportIsNull(){
+        assertThrows(RuntimeException.class, () -> {
+            frontDeskOfficer.createItinerary(airport_fr, null, new Date());
+        });
+    }
 }