diff --git a/src/main/java/hs/fulda/de/ci/exam/project/Flight.java b/src/main/java/hs/fulda/de/ci/exam/project/Flight.java
index 1d09e76..073d93b 100644
--- a/src/main/java/hs/fulda/de/ci/exam/project/Flight.java
+++ b/src/main/java/hs/fulda/de/ci/exam/project/Flight.java
@@ -45,6 +45,10 @@ public class Flight {
         return durationInMinutes;
     }
 
+    public void setFlightNumber(String flightNumber) {
+        this.flightNumber = flightNumber;
+    }
+
     @Override
     public String toString() {
         return "Flight = {" + "flightNumber=" + flightNumber + '\'' + ", departure=" + departure + ", arrival='" + arrival + ", durationInMinutes=" + durationInMinutes + '}';
diff --git a/src/test/java/hs/fulda/de/ci/exam/project/AdminTest.java b/src/test/java/hs/fulda/de/ci/exam/project/AdminTest.java
index bbe7ff2..45930a0 100644
--- a/src/test/java/hs/fulda/de/ci/exam/project/AdminTest.java
+++ b/src/test/java/hs/fulda/de/ci/exam/project/AdminTest.java
@@ -1,27 +1,41 @@
 package hs.fulda.de.ci.exam.project;
 
 import org.junit.Before;
+import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.extension.ExtendWith;
 import org.mockito.InjectMocks;
 import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;
+import org.mockito.invocation.InvocationOnMock;
 import org.mockito.junit.jupiter.MockitoExtension;
+import org.mockito.stubbing.Answer;
 import java.io.IOException;
 import java.util.ArrayList;
 
-import static org.hamcrest.CoreMatchers.is;
-import static org.hamcrest.CoreMatchers.notNullValue;
-import static org.junit.jupiter.api.Assertions.assertEquals;
-import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.*;
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.Mockito.when;
 
 @ExtendWith(MockitoExtension.class)
 public class AdminTest {
 
-    final Address address1 = new Address("Fuldaer str", "Fulda", "Hessen", "36037", "Germany");
+    Address address_fr;
+    Airport airport_fr;
+    Address address1_ist;
+    Airport airport1_ist;
+    Flight flight1;
+    Address address1;
 
+    @BeforeEach
+    public void setup() {
+        address_fr = new Address("Frankfurt str", "Frankfurt", "Hessen", "63023", "Germany");
+        airport_fr = new Airport("Fraport", address_fr, "1234");
+        address1_ist = new Address("Istanbul str", "Istanbul", "Fatih", "9019", "Turkey");
+        airport1_ist = new Airport("Istanbul", address1_ist, "5678");
+        flight1 = new Flight("1", airport_fr, airport1_ist, 140);
+        address1 = new Address("Fuldaer str", "Fulda", "Hessen", "36037", "Germany");
+    }
     @InjectMocks
     Admin admin = new Admin("Max Muster", address1, "example@gmail.com", "012345678" );
 
@@ -49,11 +63,6 @@ public class AdminTest {
 
     @Test
     public void test_addFlight_returnsNewFlight() throws IOException {
-        Address address_fr = new Address("Frankfurt str", "Frankfurt", "Hessen", "63023", "Germany");
-        Airport airport_fr = new Airport("Fraport", address_fr, "1234");
-        Address address1_ist = new Address("Istanbul str", "Istanbul", "Fatih", "9019", "Turkey");
-        Airport airport1_ist = new Airport("Istanbul", address1_ist, "5678");
-        Flight flight1 = new Flight("1", airport_fr, airport1_ist, 140);
 
         try {
             when(flightRepository.save(any(Flight.class))).thenReturn(true);
@@ -68,4 +77,15 @@ public class AdminTest {
         }
         assertNotNull(admin.addFlight("1", airport_fr, airport1_ist, 140));
     }
+    @Test
+    public void testAddFlight_throwsException() throws IOException {
+
+        when(flightRepository.save(any(Flight.class))).thenThrow(IOException.class);
+        assertThrows(IOException.class, () -> {
+            admin.addFlight("1", airport_fr, airport1_ist, 140);
+        });
+    }
+
+
+
 }