[IMP] rma_purchase: add test return_and_refund_diff_price

rma_purchase/tests/test_rma_stock_account_purchase.py

@@ -17,6 +17,10 @@ class TestRmaStockAccountPurchase(TestRmaStockAccount):
         cls.rma_operation_supplier_refund = cls.env.ref(
             "rma_account.rma_operation_supplier_refund"
         )
+        acc_type = cls._create_account_type("expense", "other")
+        cls.account_price_diff = cls._create_account(
+            acc_type, "Refund Price Difference Expense", "rpde", cls.company, False
+        )
 
     def test_01_cost_from_po_move(self):
         """
@@ -146,3 +150,77 @@ class TestRmaStockAccountPurchase(TestRmaStockAccount):
         )
         self.assertEqual(sum(grni_amls.mapped("balance")), 0.0)
         self.assertTrue(all(grni_amls.mapped("reconciled")))
+
+    def test_03_return_and_refund_diff_price(self):
+        """
+        Purchase a product.
+        Then create an RMA to return it and get the refund from the supplier with
+        a different price than the original purchase price
+        """
+        self.product_fifo_1.categ_id.update(
+            {
+                "property_account_creditor_price_difference_categ": self.account_price_diff
+            }
+        )
+        self.product_fifo_1.standard_price = 1234
+        po = self.po_model.create(
+            {
+                "partner_id": self.partner_id.id,
+            }
+        )
+        pol_1 = self.pol_model.create(
+            {
+                "name": self.product_fifo_1.name,
+                "order_id": po.id,
+                "product_id": self.product_fifo_1.id,
+                "product_qty": 10.0,
+                "product_uom": self.product_fifo_1.uom_id.id,
+                "price_unit": 100.0,
+                "date_planned": Datetime.now(),
+            }
+        )
+        po.button_confirm()
+        self._do_picking(po.picking_ids)
+        self.product_fifo_1.standard_price = 1234  # this should not be taken
+        supplier_view = self.env.ref("rma_purchase.view_rma_line_form")
+        rma_line = Form(
+            self.rma_line.with_context(supplier=1).with_user(self.rma_basic_user),
+            view=supplier_view.id,
+        )
+        rma_line.partner_id = po.partner_id
+        rma_line.purchase_order_line_id = pol_1
+        rma_line.price_unit = 4356
+        rma_line.operation_id = self.rma_operation_supplier_refund
+        rma_line = rma_line.save()
+        rma_line.action_rma_to_approve()
+        self._deliver_rma(rma_line)
+
+        with Form(
+            self.env["account.move"].with_context(default_move_type="in_refund")
+        ) as bill_form:
+            bill_form.partner_id = rma_line.partner_id
+            bill_form.invoice_date = Date.today()
+            bill_form.add_rma_line_id = rma_line
+        bill = bill_form.save()
+        bill_form = Form(bill)
+        with bill_form.invoice_line_ids.edit(0) as line_form:
+            line_form.price_unit = 110
+        bill = bill_form.save()
+        bill.action_post()
+        self.assertEqual(len(bill.invoice_line_ids), 1)
+        self.assertEqual(bill.invoice_line_ids.rma_line_id, rma_line)
+        grni_amls = self.env["account.move.line"].search(
+            [
+                ("account_id", "=", self.account_grni.id),
+                ("rma_line_id", "=", rma_line.id),
+            ]
+        )
+        self.assertEqual(sum(grni_amls.mapped("balance")), 0.0)
+        self.assertTrue(all(grni_amls.mapped("reconciled")))
+        price_diff_amls = self.env["account.move.line"].search(
+            [
+                ("account_id", "=", self.account_price_diff.id),
+                ("rma_line_id", "=", rma_line.id),
+            ]
+        )
+        self.assertEqual(sum(price_diff_amls.mapped("balance")), -100)