| # Copyright 2013 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. |
| |
| """A test to ensure the power type and status of device under test. |
| |
| Description |
| ----------- |
| The test detects the power type of the underlying device. It is also used to |
| ask operator to unplug the AC from the device. |
| |
| Test Procedure |
| -------------- |
| To test if plugged AC power is detected properly: |
| |
| 1. Plug the designated power source to the device, and unplug all the other |
| power sources. |
| 2. Starts the test. |
| |
| To test AC power unplugged: |
| |
| 1. Starts the test. |
| 2. Follow the instruction on the UI to unplug the power. |
| |
| Dependency |
| ---------- |
| - Need a power source. |
| |
| For plugged with required power range: |
| - Need a USB PD power source with required power range. |
| |
| Examples |
| -------- |
| To test AC unplugged, add this to test list:: |
| |
| { |
| "pytest_name": "ac_power", |
| "args": { |
| "online": false |
| } |
| } |
| |
| To test USBPD 45W plugged on usbpd port 0:: |
| |
| { |
| "pytest_name": "ac_power", |
| "args": { |
| "power_type": "USB_PD", |
| "usbpd_power_range": [0, 45, 45], |
| "online": true |
| } |
| } |
| """ |
| |
| import numbers |
| |
| import factory_common # pylint: disable=unused-import |
| from cros.factory.device import device_utils |
| from cros.factory.test.fixture import bft_fixture |
| from cros.factory.test.i18n import _ |
| from cros.factory.test import session |
| from cros.factory.test import test_case |
| from cros.factory.testlog import testlog |
| from cros.factory.utils.arg_utils import Arg |
| |
| _PROBE_TIMES_ID = 'probed_times' |
| _AC_STATUS_ID = 'ac_status' |
| _AC_POWER_ID = 'ac_power' |
| _AC_TYPE_USB_PD = 'USB_PD' |
| |
| |
| class ACPowerTest(test_case.TestCase): |
| """A test to instruct the operator to plug/unplug AC power. |
| |
| Args: |
| power_type: The type of the power. None to skip power type check. |
| usbpd_power_range: The required usbpd power range (min, max). None to skip |
| power range check. |
| online: True if expecting AC power. Otherwise, False. |
| bft_fixture: If assigned, it commands the BFT fixture to |
| plug/unplug an AC adapter. |
| retries: Maximum number of retries allowed to pass the test. |
| polling_period_secs: Polling period in seconds. |
| silent_warning: Skips first N charger type mismatch before giving a |
| warning. |
| """ |
| |
| ARGS = [ |
| Arg('power_type', str, 'Type of the power source', default=None), |
| Arg('usbpd_power_range', list, |
| 'The required power usbpd power range [usbpd_port, min, max]', |
| default=None), |
| Arg('online', bool, 'True if expecting AC power', default=True), |
| Arg('bft_fixture', dict, bft_fixture.TEST_ARG_HELP, default=None), |
| Arg('retries', int, |
| 'Maximum number of retries allowed to pass the test. ' |
| '0 means only probe once. Default None means probe forever.', |
| default=None), |
| Arg('polling_period_secs', numbers.Real, |
| 'Polling period in seconds.', default=1), |
| Arg('silent_warning', int, |
| 'Skips first N charger type mismatch before giving a warning. ' |
| 'Because EC needs about 1.6 seconds to identify charger type after ' |
| 'it is plugged in, it skips first N mismatched probe.', |
| default=2), |
| ] |
| |
| def setUp(self): |
| self._power = device_utils.CreateDUTInterface().power |
| |
| if not self.args.online: |
| instruction = _('Unplug the charger.') |
| elif self.args.power_type: |
| instruction = _('Plug in the charger ({type})', type=self.args.power_type) |
| else: |
| instruction = _('Plug in the charger') |
| |
| self.ui.SetInstruction(instruction) |
| |
| self.ui.SetState( |
| '<div id="%s"></div><div id="%s"></div><div id="%s"></div>' % |
| (_PROBE_TIMES_ID, _AC_STATUS_ID, _AC_POWER_ID)) |
| |
| self._power_state = {} |
| self._last_type = None |
| self._last_ac_present = None |
| self._skip_warning_remains = self.args.silent_warning |
| if self.args.usbpd_power_range is not None: |
| testlog.UpdateParam( |
| name='usbpd_power', |
| description='Detected usbpd power.', |
| value_unit='mW') |
| |
| # Prepare fixture auto test if needed. |
| self.fixture = None |
| if self.args.bft_fixture: |
| self.fixture = bft_fixture.CreateBFTFixture(**self.args.bft_fixture) |
| |
| def UpdateACPower(self, watt, min_watt, max_watt): |
| self.ui.SetHTML( |
| _('Detected power {watt} W, ' |
| 'required power range ({min_watt} W, {max_watt} W)', |
| watt=watt, |
| min_watt=min_watt, |
| max_watt=max_watt), |
| id=_AC_POWER_ID) |
| |
| def UpdateACStatus(self, status): |
| self.ui.SetHTML(status, id=_AC_STATUS_ID) |
| |
| def UpdateProbeTimes(self, num_probes): |
| self.ui.SetHTML( |
| _('Probed {times} / {total}', times=num_probes, |
| total=self.args.retries), |
| id=_PROBE_TIMES_ID) |
| |
| def CheckCondition(self): |
| ac_present = self._power.CheckACPresent() |
| current_type = self._power.GetACType() |
| |
| # Reset silent warning countdown when AC present status change. |
| # Also reset _last_type as we want to give a warning for each |
| # mismatched charger attached. |
| if self._last_ac_present != ac_present: |
| self._last_ac_present = ac_present |
| self._skip_warning_remains = self.args.silent_warning |
| self._last_type = None |
| |
| if ac_present != self.args.online: |
| if not ac_present: |
| self.UpdateACStatus(_('No AC adapter')) |
| return False |
| |
| if self.args.power_type and self.args.power_type != current_type: |
| if self._skip_warning_remains > 0: |
| self.UpdateACStatus(_('Identifying AC adapter...')) |
| self._skip_warning_remains -= 1 |
| elif self._last_type != current_type: |
| self.UpdateACStatus(_('AC adapter type: {type}', type=current_type)) |
| session.console.warning( |
| 'Expecting %s but see %s', self.args.power_type, current_type) |
| self._last_type = current_type |
| return False |
| |
| if self.args.usbpd_power_range and self.args.power_type == _AC_TYPE_USB_PD: |
| usbpd_power_infos = self._power.GetUSBPDPowerInfo() |
| port, power_min, power_max = self.args.usbpd_power_range |
| # USBPortInfo: (id, state, voltage (mV), current (mA)) |
| for info in usbpd_power_infos: |
| if info.id != port: |
| continue |
| power_watt = info.voltage * info.current / 1000000 |
| self.UpdateACPower(power_watt, power_min, power_max) |
| result = testlog.CheckNumericParam( |
| 'usbpdpower', power_watt, min=power_min, max=power_max) |
| if not result: |
| session.console.warning( |
| 'Expecting (%s, %s) watt usbpd power but see %s' % |
| (power_min, power_max, power_watt)) |
| return result |
| return False |
| return True |
| |
| def runTest(self): |
| if self.fixture: |
| self.fixture.SetDeviceEngaged(bft_fixture.BFTFixture.Device.AC_ADAPTER, |
| self.args.online) |
| num_probes = 0 |
| |
| while True: |
| if self.args.retries is not None: |
| self.UpdateProbeTimes(num_probes) |
| if self.CheckCondition(): |
| break |
| num_probes += 1 |
| if self.args.retries is not None and num_probes > self.args.retries: |
| self.FailTask('Failed after probing %d times' % num_probes) |
| # Prevent busy polling. |
| self.Sleep(self.args.polling_period_secs) |
