1# Copyright (c) 2013 The Chromium OS Authors. All rights reserved. 2# Use of this source code is governed by a BSD-style license that can be 3# found in the LICENSE file. 4 5import logging 6from autotest_lib.client.bin import test, utils 7from autotest_lib.client.common_lib import error 8from autotest_lib.client.cros.power import sys_power 9 10class power_MemorySuspend(test.test): 11 """Suspend the system via memory_suspend_test.""" 12 13 version = 1 14 15 def initialize(self): 16 utils.system('stop ui', ignore_status=True) 17 18 19 def run_once(self, num_suspends=1, max_spurious_wakeup_ratio=0.01): 20 spurious_wakeup_count = 0 21 max_spurious_wakeup = num_suspends * max_spurious_wakeup_ratio 22 23 for _ in range(num_suspends): 24 try: 25 sys_power.memory_suspend(10) 26 except sys_power.SpuriousWakeupError: 27 spurious_wakeup_count += 1 28 if spurious_wakeup_count > max_spurious_wakeup: 29 raise error.TestFail('Too many SpuriousWakeupError.') 30 31 if spurious_wakeup_count > 0: 32 logging.info("Have %d SpuriousWakeupError", spurious_wakeup_count) 33 34 keyval = { 'numSpuriousWakeupError' : spurious_wakeup_count } 35 self.write_perf_keyval(keyval) 36 37 def cleanup(self): 38 utils.system('start ui') 39