Add Uni Test AIGridGUI

src/test/java/AIGridGUITest.java

@@ -32,5 +32,8 @@ public class AIGridGUITest {
 
     @Test
     public void testMoveLeft() {
+        AIGridGUI aiGridGUI = new AIGridGUI(10, 10);
+        int result = aiGridGUI.moveLeft(3);
+        assertEquals(2, result);
     }
 }