[IMP] core: tools.config.is_testing flag

Flag to check whether Odoo was started in test mode.

task-4270485

closes odoo/design-themes#1009

Related: odoo/odoo#186924
Related: odoo/enterprise#73654
Signed-off-by: Xavier Dollé (xdo) <xdo@odoo.com>

test_themes/models/ir_http.py

@@ -1,6 +1,6 @@
 # Part of Odoo. See LICENSE file for full copyright and licensing details.
 
-from odoo import models, tools
+from odoo import models, modules
 from odoo.http import request
 
 
@@ -11,7 +11,7 @@ class IrHttp(models.AbstractModel):
     def _pre_dispatch(cls, rule, args):
         # Allow public user to use `fw` query string in test mode to ease tests
         force_website_id = request.httprequest.args.get('fw')
-        if (request.registry.in_test_mode() or tools.config.options['test_enable']) and force_website_id:
+        if modules.module.current_test and force_website_id:
             request.env['website']._force_website(force_website_id)
 
         super()._pre_dispatch(rule, args)