def test_adjacent_is_set(self):
main_area = Area('main', '')
adjacent_area = Area('North Area', '')
main_area.addAdjacent(adjacent_area)
self.assertEqual(main_area.adjacents.__len__(), 1)
self.assertEqual(main_area.adjacents.pop(), adjacent_area)
self.assertEqual(adjacent_area.adjacents.__len__(), 1)
self.assertEqual(adjacent_area.adjacents.pop(), main_area)
