Align test with const

changedetectionio/tests/test_filter_failure_notification.py

@@ -105,9 +105,10 @@ def test_check_notification(client, live_server):
     os.unlink("test-datastore/notification.txt")
     set_response_with_filter()
 
-    for i in range(0, 5):
+    for i in range(0, App._FILTER_FAILURE_THRESHOLD_ATTEMPTS_DEFAULT):
         client.get(url_for("form_watch_checknow"), follow_redirects=True)
         time.sleep(3)
+        
     # It should have sent a notification, but..
     assert os.path.isfile("test-datastore/notification.txt")
     # but it should not contain the info about the failed filter