@Test
 public void testMove() {
   assertEquals("At the start the x: 2", 2, element.getX());
   assertEquals("At the start the y: 3", 3, element.getY());
   element.move(4, 5);
   assertEquals("After move method calling the x became: 5", 5, element.getX());
   assertEquals("After move method calling the y became: 4", 4, element.getY());
 }