[FIX] point_of_sale: revert to allow order partial refund

This reverts commit https://github.com/odoo/odoo/commit/ae7d18dd5f2a712348fc0911777b164c7a273c0a to allow partial refunding of pos order as the total_amount is not correct anymore.

opw-3827876

closes odoo/odoo#160741

Signed-off-by: Sarah Bellefroid (sbel) <sbel@odoo.com>

addons/point_of_sale/models/pos_order.py

@@ -538,8 +538,7 @@ class PosOrder(models.Model):
         }
 
     def _is_pos_order_paid(self):
-        amount_total = -self.refunded_order_ids.amount_paid or self.amount_total
-        return float_is_zero(self._get_rounded_amount(amount_total) - self.amount_paid, precision_rounding=self.currency_id.rounding)
+        return float_is_zero(self._get_rounded_amount(self.amount_total) - self.amount_paid, precision_rounding=self.currency_id.rounding)
 
     def _get_rounded_amount(self, amount, force_round=False):
         # TODO: add support for mix of cash and non-cash payments when both cash_rounding and only_round_cash_method are True

addons/point_of_sale/static/tests/tours/PaymentScreen.tour.js

@@ -275,24 +275,3 @@ registry.category("web_tour.tours").add("PaymentScreenTotalDueWithOverPayment",
             PaymentScreen.totalDueIs("1.95"),
         ].flat(),
 });
-
-registry.category("web_tour.tours").add("PaymentScreenRoundingDownMultiplePayment", {
-    test: true,
-    steps: () =>
-        [
-            ProductScreen.clickHomeCategory(),
-            ProductScreen.addOrderline("Product Test", "1"),
-            ProductScreen.clickPayButton(),
-
-            PaymentScreen.clickPaymentMethod("Bank"),
-            PaymentScreen.pressNumpad("5 5"),
-
-            PaymentScreen.clickPaymentMethod("Cash"),
-
-            PaymentScreen.remainingIs("0.0"),
-            PaymentScreen.changeIs("0.0"),
-
-            PaymentScreen.clickValidate(),
-            ReceiptScreen.receiptIsThere(),
-        ].flat(),
-});

addons/point_of_sale/tests/test_frontend.py

@@ -1138,41 +1138,6 @@ class TestUi(TestPointOfSaleHttpCommon):
         self.main_pos_config.with_user(self.pos_user).open_ui()
         self.start_tour("/pos/ui?config_id=%d" % self.main_pos_config.id, 'MultiProductOptionsTour', login="pos_user")
 
-    def test_rounding_down_refund_multiple_payment(self):
-        """This test makes sure that the refund amount always correspond to what has been paid in the original order.
-           In this example we have a rounding, so we pay 55 in bank that is not rounded, then we pay the rest in cash
-           that is rounded. This sum up to 130 paid, so the refund should be 130."""
-        rouding_method = self.env['account.cash.rounding'].create({
-            'name': 'Rounding down',
-            'rounding': 5.0,
-            'rounding_method': 'DOWN',
-        })
-
-        self.env['product.product'].create({
-            'name': 'Product Test',
-            'available_in_pos': True,
-            'list_price': 134.38,
-            'taxes_id': False,
-        })
-
-        self.main_pos_config.write({
-            'rounding_method': rouding_method.id,
-            'cash_rounding': True,
-        })
-
-        self.main_pos_config.open_ui()
-        self.start_tour("/pos/ui?config_id=%d" % self.main_pos_config.id, 'PaymentScreenRoundingDownMultiplePayment', login="accountman")
-
-        last_order = self.env['pos.order'].search([], order='id desc', limit=1)
-        refund_order = self.env['pos.order'].browse(last_order.refund()['res_id'])
-        payment = self.env['pos.make.payment'].with_context(active_id=refund_order.id).create({
-            'payment_method_id': self.main_pos_config.payment_method_ids[0].id,
-        })
-        self.assertEqual(payment.amount, -130.0, "The amount should be 130.0")
-        payment.check()
-        self.assertEqual(refund_order.amount_paid, -130.0, "The amount should be 130.0")
-        self.assertEqual(refund_order.state, 'paid', "The order should be paid")
-
 # This class just runs the same tests as above but with mobile emulation
 class MobileTestUi(TestUi):
     browser_size = '375x667'