client/site_tests/power_Resume/power_Resume.py

# Copyright (c) 2010 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.

import logging

from autotest_lib.client.bin import test
from autotest_lib.client.cros import power_suspend


class power_Resume(test.test):
    version = 1
    preserve_srcdir = True

    def initialize(self):
        self._suspender = power_suspend.Suspender(throw=True, device_times=True)


    def run_once(self, max_devs_returned=10):
        for _ in xrange(10):
            try:
                # TODO: smaller delay, but device specific minimums in Suspender
                (results, device_times) = self._suspender.suspend(10)
                break
            except power_suspend.HwClockError:
                if not power_suspend.HwClockError.is_affected(): raise
                logging.warn('Known RTC interrupt bug on this board, retrying')
        else:
            raise power_suspend.HwClockError('RTC kept failing for 10 retries')

        # return as keyvals the slowest n devices
        slowest_devs = sorted(
            device_times,
            key=device_times.get,
            reverse=True)[:max_devs_returned]
        for dev in slowest_devs:
            results[dev] = device_times[dev]

        results['seconds_3G_disconnect'] = self._suspender.disconnect_3G_time

        self.write_perf_keyval(results)