80 lines
2.6 KiB
Python
80 lines
2.6 KiB
Python
# Copyright 2017 The Chromium OS Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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from __future__ import print_function
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import logging
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import time
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from autotest_lib.client.common_lib import error
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from autotest_lib.server import autotest
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from autotest_lib.server.cros.faft.firmware_test import FirmwareTest
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class firmware_Cr50USB(FirmwareTest):
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"""
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Stress the Cr50 usb connection to the DUT.
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This test is intended to be run with many iterations to ensure that the
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USB connection is not flaky.
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The iteration should be specified by the parameter -a "num_iterations=10".
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To exit on the first USB failure use "exit_condition='immediately'".
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"""
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version = 1
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SLEEP_DELAY = 20
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def cleanup(self):
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"""Reenable CCD before cleanup"""
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if hasattr(self, "cr50"):
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self.cr50.ccd_enable()
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super(firmware_Cr50USB, self).cleanup()
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def run_once(self, host, cmdline_args, num_iterations=100,
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exit_condition=None):
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"""Runs a single iteration of the test."""
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self.host = host
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# Disable CCD so it doesn't interfere with the Cr50 AP usb connection.
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if hasattr(self, "cr50"):
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self.cr50.ccd_disable()
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# Make sure the device is logged in so TPM activity doesn't keep it
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# awake
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self.client_at = autotest.Autotest(self.host)
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self.client_at.run_test('login_LoginSuccess')
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failed_runs = []
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fail_count = 0
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logging.info("Running Cr50 USB stress test for %d iterations",
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num_iterations)
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for iteration in xrange(num_iterations):
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if iteration:
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time.sleep(self.SLEEP_DELAY)
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i = iteration + 1
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logging.info("Run %d of %d%s", i, num_iterations,
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" %d failures" % fail_count if fail_count else "")
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try:
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# Run usb_updater command.
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result = self.host.run("usb_updater -f")
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except Exception as e:
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failed_runs.append(str(i))
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fail_count += 1
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logging.debug(e)
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if exit_condition == "immediately":
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raise error.TestFail("USB failure on run %d of %d" %
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(i, num_iterations))
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logging.info("USB failure on %d out of %d runs: %s", fail_count,
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i, ', '.join(failed_runs))
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if fail_count:
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raise error.TestFail('USB failure on %d runs out of %d: %s' %
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(fail_count, num_iterations, ', '.join(failed_runs)))
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