[FIX] sale_management: correctly autocomplete uom on option lines

Fixes a mistake from 0c468f6c2f160dec672bd25c673401b154b2709b where the uom
autocompletion was lost and adds a test to make sure it won't happen again.

closes odoo/odoo#87667

X-original-commit: 10bc8dc114511740d549dfc5261bc244e0a98ad9
Signed-off-by: Victor Feyens (vfe) <vfe@odoo.com>

addons/sale_management/tests/test_sale_order.py

@@ -2,7 +2,7 @@
 # Part of Odoo. See LICENSE file for full copyright and licensing details.
 
 from odoo.addons.sale.tests.common import TestSaleCommon
-from odoo.tests import tagged
+from odoo.tests import Form, tagged
 
 
 @tagged('-at_install', 'post_install')
@@ -338,3 +338,10 @@ class TestSaleOrder(TestSaleCommon):
             self.pl_option_discount,
             "If a pricelist is set without discount included,"
             " the discount should be correctly computed.")
+
+    def test_option_creation(self):
+        """Make sure the product uom is automatically added to the option when the product is specified"""
+        order_form = Form(self.sale_order)
+        with order_form.sale_order_option_ids.new() as option:
+            option.product_id = self.product_1
+            self.assertTrue(bool(option.uom_id))