Finished first functioning and successful unit test (tests noise handling)

src/test/java/ch/unibas/dmi/dbis/cs108/gamelogic/NoiseHandlerTest.java

@@ -0,0 +1,54 @@
+package ch.unibas.dmi.dbis.cs108.gamelogic;
+
+import ch.unibas.dmi.dbis.cs108.gamelogic.klassenstruktur.Passenger;
+import ch.unibas.dmi.dbis.cs108.multiplayer.server.ClientHandler;
+import ch.unibas.dmi.dbis.cs108.multiplayer.server.Lobby;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+import static org.junit.jupiter.api.Assertions.*;
+import java.net.InetAddress;
+import java.net.Socket;
+import java.net.UnknownHostException;
+
+class NoiseHandlerTest {
+    Passenger[] passengers = new Passenger[6];  // create new collection of passengers
+    Passenger predator = new Passenger();
+    Passenger victim = new Passenger();  // player who will be turned into a ghost this night
+    int[] noiseAmount = new int[6];  // collect amount of times a ghost walked by the humans (= noises heard)
+    int[] noiseAmountGuideline = new int[6];  // array that represents the right people having heard the right noise amount
+
+    @BeforeEach
+    void preparation() {
+        for (int i = 0; i < passengers.length; i++) {
+            passengers[i] = new Passenger();
+        }
+        predator.setGhost();
+    }
+
+    @Test
+    @DisplayName("The right players hear the right amount of noises")
+
+    void noiseTest1() {
+        /* test 1: people heard the right noise amount for following case: ghost is at position 5 and ghostifies
+        player at position 2 --> noises at positions 3 and 4
+         */
+        predator.setPosition(5);
+        victim.setPosition(2);
+        passengers[predator.getPosition()] = predator;
+        passengers[victim.getPosition()] = victim;
+
+        for (int i = 3; i < 5; i++) {
+            noiseAmountGuideline[i]++;
+        }
+        /* call main method of NoiseHandler so that all passengers are notified about all noises (notifications are
+        updated in noiseAmount array) */
+        for (int i = 0; i < passengers.length; i++) {
+            if (passengers[i].getIsGhost() && i != victim.getPosition()) {
+                NoiseHandler n = new NoiseHandler();
+                noiseAmount = n.noiseNotifier(passengers[i], victim, noiseAmount);
+            }
+        }
+        assertArrayEquals(noiseAmountGuideline, noiseAmount);
+    }
+}