[FIX] test_event_full: fix the registration testing tour

Bug
===
Sometimes, the registration testing tour failed.

The bug can be semi-deterministic if we add a "sleep(1)" in the endpoint
"/event/<event>/track".

Reason
======
The reason for that is the service worker. It will pre-fetch all the
links in the page (see "prefetch-pages"), so for the "Online Reveal"
we will pre-fetch ~100 pages... If the server is slow, it can cause
issues.

If one endpoint takes some time, all other HTTP requests done by the
service worker will be waiting for it.

So, at the end of the testing tour, the service worker will continue to
make HTTP requests (because it makes the request sequentially) and so
some threads will still be created after the tour.

Even if "_wait_remaining_requests" is called to wait those threads, as
the service worker is still running, it will still continue to make HTTP
requests, creating new threads...

Fix
===
The solution to this issue is to kill the service workers of the browser
when we stop the tour before waiting for the end of the "HTTP request
threads".

Task 2381066

closes odoo/odoo#62248

Signed-off-by: Christophe Monniez (moc) <moc@odoo.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/odoo/tests/common.py b/odoo/tests/common.py
index df1b5409232..af270c5b7f8 100644
--- a/odoo/tests/common.py
+++ b/odoo/tests/common.py
@@ -1159,6 +1159,15 @@ class ChromeBrowser():
         self.screencast_frames = []
         sl_id = self._websocket_send('Page.stopLoading')
         self._websocket_wait_id(sl_id)
+        clear_service_workers = """
+        if ('serviceWorker' in navigator) {
+            navigator.serviceWorker.getRegistrations().then(
+                registrations => registrations.forEach(r => r.unregister())
+            )
+        }
+        """
+        cl_id = self._websocket_send('Runtime.evaluate', params={'expression': clear_service_workers, 'awaitPromise': True})
+        self._websocket_wait_id(cl_id)
         self._logger.info('Deleting cookies and clearing local storage')
         dc_id = self._websocket_send('Network.clearBrowserCache')
         self._websocket_wait_id(dc_id)