[FIX] tests: ensure that previous user is logged off in authenticate

In some case, a browser_js test with login "None" following a browser_js
test with a defined login could result in the second test being executed
with the previous user.

This was caused by a race condition, a request response comming back
to chrome just after browser clear, restoring the old cookie.
(All odoo request have the set_cookie flag set in order to refresh
cookie timeout)

The solution here is to check one more time for cookie in authenticate,
but also to remove HTTPCase session from session_store. This will
only be effective when calling browser_js without login in the same
HTTPCase .

closes odoo/odoo#39525

X-original-commit: 218db53b9da1573dc18610678de3b7f763531c60
Signed-off-by: Xavier Dollé (xdo) <xdo@odoo.com>

odoo/tests/common.py

@@ -811,7 +811,7 @@ class ChromeBrowser():
         params = {kw:kwargs[kw] for kw in kwargs if kw in ['url', 'domain', 'path']}
         params.update({'name': name})
         _id = self._websocket_send('Network.deleteCookies', params=params)
-        return self._websocket_wait_id(_id) 
+        return self._websocket_wait_id(_id)
 
     def _wait_ready(self, ready_code, timeout=60):
         self._logger.info('Evaluate ready code "%s"', ready_code)
@@ -1000,6 +1000,9 @@ class HttpCase(TransactionCase):
     def authenticate(self, user, password):
         # stay non-authenticated
         if user is None:
+            if self.session:
+                odoo.http.root.session_store.delete(self.session)
+            self.browser.delete_cookie('session_id', domain=HOST)
             return
 
         db = get_db_name()