[FIX] website_sale_aplicoop: freeze pickup dates on cron confirm

website_sale_aplicoop/tests/test_cron_picking_batch.py

@@ -73,7 +73,9 @@ class TestCronPickingBatch(TransactionCase):
                 "group_ids": [
                     (6, 0, [self.consumer_group_1.id, self.consumer_group_2.id])
                 ],
-                "period": "once",  # One-time order to avoid date recalculation
+                "period": "once",  # One-time order; dates are set explicitly below
+                "cutoff_day": "0",  # Monday
+                "pickup_day": "2",  # Wednesday
                 "state": state,
             }
         )
@@ -192,6 +194,37 @@ class TestCronPickingBatch(TransactionCase):
             "Sale order should be confirmed - cutoff date has passed",
         )
 
+    def test_cron_freezes_pickup_date_on_confirm(self):
+        """Confirmed orders must keep the cycle pickup date (no next-week drift)."""
+        group_order = self._create_group_order(cutoff_in_past=True)
+
+        so = self._create_sale_order(group_order, self.member_1, self.consumer_group_1)
+
+        self.assertTrue(
+            group_order.pickup_date,
+            "Precondition failed: helper must provide a non-empty pickup_date",
+        )
+
+        # Simulate an inconsistent draft date (e.g. stale or shifted value)
+        wrong_pickup_date = group_order.pickup_date + timedelta(days=7)
+        so.write({"pickup_date": wrong_pickup_date})
+
+        self.assertEqual(so.state, "draft")
+        self.assertEqual(so.pickup_date, wrong_pickup_date)
+
+        expected_pickup_date = group_order.pickup_date
+
+        group_order._confirm_linked_sale_orders()
+
+        so.invalidate_recordset()
+
+        self.assertEqual(so.state, "sale")
+        self.assertEqual(
+            so.pickup_date,
+            expected_pickup_date,
+            "Cron should snapshot and preserve the current cycle pickup_date when confirming",
+        )
+
     def test_cron_creates_picking_batch_per_consumer_group(self):
         """Test that cron creates separate picking batches per consumer group."""
         # Create group order with cutoff yesterday (past)