flight cancellation

src/main/java/hs/fulda/de/ci/exam/project/Flight.java

@@ -2,6 +2,8 @@ package hs.fulda.de.ci.exam.project;
 
 import java.util.HashSet;
 
+import static hs.fulda.de.ci.exam.project.FlightStatus.Cancelled;
+
 public class Flight {
     String flightNumber;
     Airport departure;
@@ -28,9 +30,19 @@ public class Flight {
         return null;
     }
 
-    public boolean cancel() {
+    public boolean cancel(FlightInstance fInstance1) {
+        if (flightInstances.contains(fInstance1)) {
+            for (FlightInstance obj : flightInstances) {
+                if (obj.equals(fInstance1)) {
+                    obj.status = Cancelled;
+                    System.out.println("Flight intance is cancelled");
+                }
+            }
             return true;
         }
+        return false;
+
+    }
 
     public boolean addFlightSchedule(FlightInstance fi) {
         flightInstances.add(fi);

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

@@ -6,6 +6,7 @@ import java.sql.Time;
 import java.util.HashSet;
 
 import static hs.fulda.de.ci.exam.project.FlightStatus.Active;
+import static hs.fulda.de.ci.exam.project.FlightStatus.Cancelled;
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 
@@ -48,6 +49,16 @@ class FlightTest {
         assertThat(expected).isEqualTo(result);
     }
 
+    @Test
+    void cancelingFlightShouldChangeActiveToCancelled() {
+        boolean addInstance = flight1.addFlightSchedule(fInstance1);
+        assertTrue(addInstance);
+        flight1.cancel(fInstance1);
+        FlightStatus result = flight1.getFlightInstance(fInstance1).getStatus();
+        FlightStatus expected = Cancelled;
+        assertThat(expected).isEqualTo(result);
+    }
+
     @Test
     void getFlightNumber() {
         assertThat(flight1.getFlightNumber()).describedAs("get flight number of the flight").isEqualTo("1");