[FIX] stock_request_purchase: Define the correct quantity of allocati…

…ons to be created from purchase order lines

Example use case:
- Create stock request for a product with quantity 10
- Confirm purchase order
- Change purchase order line to quantity 12
- "In progress" quantity of the stock request must be 10 (not 22=10+12)

TT51567

stock_request_purchase/models/purchase_order_line.py

@@ -37,7 +37,8 @@ def _prepare_stock_moves(self, picking):
                     0,
                     {
                         "stock_request_id": request.id,
-                        "requested_product_uom_qty": request.product_qty,
+                        "requested_product_uom_qty": re["product_uom_qty"]
+                        / len(self.stock_request_ids),
                     },
                 )
                 for request in self.stock_request_ids

stock_request_purchase/tests/test_stock_request_purchase.py

@@ -218,6 +218,54 @@ def test_create_request_cancel_purchase(self):
         stock_request.action_cancel()
         self.assertEqual(stock_request.purchase_ids.state, "cancel")
 
+    def test_update_purchase_order_line_qty(self):
+        expected_date = fields.Datetime.now()
+        vals = {
+            "company_id": self.main_company.id,
+            "warehouse_id": self.warehouse.id,
+            "location_id": self.warehouse.lot_stock_id.id,
+            "expected_date": expected_date,
+            "stock_request_ids": [
+                (
+                    0,
+                    0,
+                    {
+                        "product_id": self.product.id,
+                        "product_uom_id": self.product.uom_id.id,
+                        "product_uom_qty": 10.0,
+                        "company_id": self.main_company.id,
+                        "warehouse_id": self.warehouse.id,
+                        "location_id": self.warehouse.lot_stock_id.id,
+                        "expected_date": expected_date,
+                    },
+                ),
+            ],
+        }
+        order = (
+            self.env["stock.request.order"]
+            .with_user(self.stock_request_user)
+            .create(vals)
+        )
+        order.action_confirm()
+        self.assertEqual(order.state, "open")
+        self.assertEqual(len(order.purchase_ids), 1)
+        request = order.stock_request_ids
+        purchase = order.purchase_ids.sudo()
+        purchase_line = purchase.order_line
+        self.assertEqual(purchase_line.product_qty, 10)
+        purchase.button_confirm()
+        self.assertEqual(len(request.allocation_ids), 1)
+        self.assertEqual(request.qty_in_progress, 10)
+        purchase_line.write({"product_qty": 12})
+        self.assertEqual(len(request.allocation_ids), 2)
+        self.assertEqual(request.qty_in_progress, 12)
+        picking = purchase.picking_ids
+        picking.move_line_ids.qty_done = 12
+        picking.button_validate()
+        self.assertEqual(request.qty_in_progress, 0)
+        self.assertEqual(request.qty_done, 12)
+        self.assertEqual(request.state, "done")
+
     def test_unlink_purchase_order_line(self):
         """
         Test that when a purchase order line is unlinked,