simplify tests

boutique/tests/test_models.py

@@ -773,7 +773,7 @@ class OrderTest(PaymentTestCase, OrderItemTestCase):
         self.assertFalse(pack_with_illegal_children.contains_illegal_items)
         self.assertFalse(legal_item.contains_illegal_items)
 
-        items_in_order = [oi.item for oi in self.order.items.all()]
+        previous_items_in_order = [oi.item for oi in self.order.items.all()]
 
         deleted_count = self.order.clean_illegal_items()
         self.assertEqual(deleted_count, 0)
@@ -782,10 +782,7 @@ class OrderTest(PaymentTestCase, OrderItemTestCase):
 
         items_in_order = [oi.item for oi in self.order.items.all()]
 
-        self.assertTrue(hidden_item in items_in_order)
-        self.assertTrue(ood_item in items_in_order)
-        self.assertTrue(pack_with_illegal_children in items_in_order)
-        self.assertTrue(legal_item in items_in_order)
+        self.assertEqual(previous_items_in_order, items_in_order)
 
     def test_delete_illegal_items_on_unordered_order(self) -> None:
         hidden_item = self.create_item()