1 # Copyright 2016 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 5 import logging 6 import random 7 import time 8 9 from autotest_lib.client.common_lib import error 10 from autotest_lib.server.cros.cfm import cfm_base_test 11 12 _SHORT_TIMEOUT = 2 13 14 15 class enterprise_CFM_VolumeChange(cfm_base_test.CfmBaseTest): 16 """ 17 Volume changes made in the CFM / hotrod app should be accurately reflected 18 in CrOS. 19 """ 20 version = 1 21 22 23 def _change_volume(self, repeat, cmd): 24 """ 25 Change volume using CFM api and cross check with cras_test_client 26 output. 27 28 @param repeat: Number of times the volume should be changed. 29 @param cmd: cras_test_client command to run. 30 @raises error.TestFail if cras volume does not match volume set by CFM. 31 """ 32 # This is used to trigger crbug.com/614885 33 for volume in range(55, 85): 34 self.cfm_facade.set_speaker_volume(volume) 35 time.sleep(random.uniform(0.01, 0.05)) 36 37 for _ in xrange(repeat): 38 # There is a minimal volume threshold so we can't start at 0%. 39 # See crbug.com/633809 for more info. 40 cfm_volume = random.randrange(2, 100, 1) 41 self.cfm_facade.set_speaker_volume(cfm_volume) 42 time.sleep(_SHORT_TIMEOUT) 43 44 # Get the volume report from cras_test_client 45 cras_volume = int( 46 self._host.run_output(cmd).splitlines()[0].strip()) 47 48 if cras_volume != cfm_volume: 49 raise error.TestFail('Cras volume (%d) does not match ' 50 'volume set by CFM (%d).' % 51 (cras_volume, cfm_volume)) 52 else: 53 logging.info('Cras volume (%d) matches volume set by CFM (%d)', 54 cras_volume, cfm_volume) 55 56 def run_once(self, repeat, cmd): 57 """Runs the test.""" 58 self.cfm_facade.wait_for_meetings_telemetry_commands() 59 self.cfm_facade.start_meeting_session() 60 if self.cfm_facade.is_mic_muted(): 61 self.cfm_facade.unmute_mic() 62 self._change_volume(repeat, cmd) 63 self.cfm_facade.end_meeting_session() 64
