Add Uni Test AIGridGUI

src/test/java/AIGridGUITest.java

@@ -1,6 +1,8 @@
 import BattleShip.AIGridGUI;
 import org.junit.jupiter.api.Test;
 
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
 
 public class AIGridGUITest {
 
@@ -8,7 +10,8 @@ public class AIGridGUITest {
 
     @Test
     public void testMoveUpForValidInput() {
-
+        int result = aiGridGUI.moveUp(55);
+        assertEquals(45, result);
     }
 
 }