# Copyright 2018 The Chromium OS Authors. All rights reserved. # Use of this source code is governed by a BSD-style license that can be # found in the LICENSE file. from autotest_lib.client.cros.update_engine import nebraska_wrapper from autotest_lib.client.cros.update_engine import update_engine_test class autoupdate_UrlSwitch(update_engine_test.UpdateEngineTest): """Tests that we can continue with the second url when the first fails.""" version = 1 def run_once(self, payload_url): """ Tests to see whether the update_engine can successfully switch to a different URL if one fails. @param image_url: The URL of the update payload. """ with nebraska_wrapper.NebraskaWrapper( log_dir=self.resultsdir, payload_url=payload_url) as nebraska: # Start the update that will return two Urls. This matches what test # and production omaha does today. self._check_for_update( nebraska.get_update_url(failures_per_url=1, num_urls=2, critical_update=True)) self._wait_for_progress(0.2) # Pull the network cable so the update fails. self._disable_internet() # It will retry 21 times before giving up. self._wait_for_update_to_fail() # Check that we are moving to the next Url. self._enable_internet() self._check_update_engine_log_for_entry( 'Reached max number of failures for Url', raise_error=True) # The next update attempt should resume and finish successfully. self._check_for_update( nebraska.get_update_url(critical_update=True)) self._wait_for_update_to_complete() self._check_update_engine_log_for_entry( 'Resuming an update that was previously started.', raise_error=True)