should not create itinerary when starting airport is null

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

@@ -1,26 +1,34 @@
 package hs.fulda.de.ci.exam.project;
 
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Test;
 import org.mockito.InjectMocks;
 
 import java.util.Date;
 
-import static org.junit.jupiter.api.Assertions.assertEquals;
-import static org.junit.jupiter.api.Assertions.assertFalse;
-import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.junit.jupiter.api.Assertions.*;
 
 public class FrontDeskOfficerTest {
+
+    final Address address1 = new Address("Fuldaer str", "Fulda", "Hessen", "36037", "Germany");
+    final Airport airport_fr = new Airport("Fraport", address1, "1234");
+    final Airport airport_be = new Airport("Berlin", address1, "5678");
+    final FrontDeskOfficer frontDeskOfficer = new FrontDeskOfficer("John", address1, "example@email.com", "0151238967");
+
     @Test
     public void shouldCreateItinerary() {
-        final Address address1 = new Address("Fuldaer str", "Fulda", "Hessen", "36037", "Germany");
-        final Airport airport_fr = new Airport("Fraport", address1, "1234");
-        final Airport airport_be = new Airport("Berlin", address1, "5678");
-        FrontDeskOfficer frontDeskOfficer = new FrontDeskOfficer("John", address1, "example@email.com", "0151238967");
-
         frontDeskOfficer.createItinerary(airport_fr, airport_be, new Date());
         assertFalse(frontDeskOfficer.getAllItineraries().isEmpty());
         assertEquals(1, frontDeskOfficer.getAllItineraries().size());
         assertTrue(frontDeskOfficer.getAllItineraries().stream().filter(itinerary ->  itinerary.getStart_airport().equals(airport_fr) &&
                 itinerary.getFinal_airport().equals(airport_be)).findAny().isPresent());
     }
+    @Test
+    @DisplayName("Should Not Create Itinerary when Starting Airport is null")
+    public void shouldThrowRuntimeExceptionWhenStartAirportIsNull(){
+        assertThrows(RuntimeException.class, () -> {
+            frontDeskOfficer.createItinerary(null, airport_be, new Date());
+        });
+    }
 }