Add python test case

Hello,

Add a python test case in website_forum module.

More details:
Task link :- https://www.odoo.com/web#id=8745&view_type=form&model=project.task&menu_id=3942&action=327
Pad link :- https://pad.odoo.com/p/r.EsLOcZQQuvZYB4ll

Thanks,
ssh-odoo
I try to use variable names in tests that are very explicits. For example user_employee_1. This allows to know in the code that we are dealing with an employee user. We do not have to go up / down again to double-check the code. Could you update the variable names ?