[IMP] mail: make mail gateway tests independent from gateway configur…

…ation

Purpose of this commit is to set mail configuration (bounce and catchall
aliases as well as global domain) during mail gateway tests. That way
tests are reproducible and independent from current configuration.

PR #40442

addons/mail/tests/test_mail_gateway.py

@@ -688,6 +688,13 @@ def setUp(self):
         mail_test_model = self.env['ir.model']._get('mail.test')
         mail_channel_model = self.env['ir.model']._get('mail.channel')
 
+        self.bounce_alias = 'test_bounce'
+        self.catchall_alias = 'test_catchall'
+        self.catchall_domain = 'example.com'
+        self.env['ir.config_parameter'].set_param('mail.bounce.alias', self.bounce_alias)
+        self.env['ir.config_parameter'].set_param('mail.catchall.alias', self.catchall_alias)
+        self.env['ir.config_parameter'].set_param('mail.catchall.domain', self.catchall_domain)
+
         # groups@.. will cause the creation of new mail.test
         self.alias = self.env['mail.alias'].create({
             'alias_name': 'groups',