feat: add initial support for order item events

so far just attaching events on creation, but then can view them

tests/batch/test_neworder.py

@@ -1109,6 +1109,20 @@ class TestNewOrderBatchHandler(DataTestCase):
         self.assertEqual(item.unit_cost, decimal.Decimal('3.99'))
         self.assertEqual(item.unit_price_reg, decimal.Decimal('5.99'))
 
+    def test_set_initial_item_status(self):
+        model = self.app.model
+        enum = self.app.enum
+        handler = self.make_handler()
+        user = model.User(username='barney')
+        item = model.OrderItem()
+        self.assertIsNone(item.status_code)
+        self.assertEqual(len(item.events), 0)
+        handler.set_initial_item_status(item, user)
+        self.assertEqual(item.status_code, enum.ORDER_ITEM_STATUS_READY)
+        self.assertEqual(len(item.events), 2)
+        self.assertEqual(item.events[0].type_code, enum.ORDER_ITEM_EVENT_INITIATED)
+        self.assertEqual(item.events[1].type_code, enum.ORDER_ITEM_EVENT_READY)
+
     def test_execute(self):
         model = self.app.model
         enum = self.app.enum