[FIX] payment: move _build_url to the test class that supports it

Calling `_build_url` for a test class that only inherited from
`PaymentCommon` would raise an error, as the method depends on the
`HttpCase` test class that is only inherited by `PaymentHttpCommon`.

closes odoo/odoo#95860

Related: odoo/documentation#2532
Signed-off-by: Antoine Vandevenne (anv) <anv@odoo.com>

addons/payment/tests/common.py

@@ -4,7 +4,6 @@ import logging
 from unittest.mock import patch
 
 from lxml import objectify
-from werkzeug import urls
 
 from odoo.fields import Command
 from odoo.tools.misc import hmac as hmac_tool
@@ -244,9 +243,6 @@ class PaymentCommon(AccountTestInvoicingCommon):
         access_token = hmac_tool(self.env(su=True), 'generate_access_token', token_str)
         return access_token
 
-    def _build_url(self, route):
-        return urls.url_join(self.base_url(), route)
-
     def _extract_values_from_html_form(self, html_form):
         """ Extract the transaction rendering values from an HTML form.
 

addons/payment/tests/http_common.py

@@ -2,7 +2,9 @@
 
 import json
 from uuid import uuid4
+
 from lxml import etree, objectify
+from werkzeug import urls
 
 from odoo.tests import HttpCase
 
@@ -19,6 +21,9 @@ class PaymentHttpCommon(PaymentCommon, HttpCase):
     # Helpers #
     ###########
 
+    def _build_url(self, route):
+        return urls.url_join(self.base_url(), route)
+
     def _make_http_get_request(self, url, params=None):
         """ Make an HTTP GET request to the provided URL.