| # Copyright (c) 2014 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 contextlib |
| import dbus |
| import logging |
| import sys |
| import traceback |
| |
| import common |
| from autotest_lib.client.bin import utils |
| from autotest_lib.client.common_lib import error |
| from autotest_lib.client.cros import backchannel |
| from autotest_lib.client.cros.cellular import mm |
| from autotest_lib.client.cros.cellular.pseudomodem import pseudomodem_context |
| from autotest_lib.client.cros.networking import cellular_proxy |
| from autotest_lib.client.cros.networking import shill_context |
| from autotest_lib.client.cros.networking import shill_proxy |
| |
| |
| class CellularTestEnvironment(object): |
| """Setup and verify cellular test environment. |
| |
| This context manager configures the following: |
| - Sets up backchannel. |
| - Shuts down other devices except cellular. |
| - Shill and MM logging is enabled appropriately for cellular. |
| - Initializes members that tests should use to access test environment |
| (eg. |shill|, |modem_manager|, |modem|). |
| |
| Then it verifies the following is valid: |
| - The backchannel is using an Ethernet device. |
| - The SIM is inserted and valid. |
| - There is one and only one modem in the device. |
| - The modem is registered to the network. |
| - There is a cellular service in shill and it's not connected. |
| |
| Don't use this base class directly, use the appropriate subclass. |
| |
| Setup for over-the-air tests: |
| with CellularOTATestEnvironment() as test_env: |
| # Test body |
| |
| Setup for pseudomodem tests: |
| with CellularPseudoMMTestEnvironment( |
| pseudomm_args=({'family': '3GPP'})) as test_env: |
| # Test body |
| |
| """ |
| |
| def __init__(self, use_backchannel=True, shutdown_other_devices=True, |
| modem_pattern='', skip_modem_reset=False): |
| """ |
| @param use_backchannel: Set up the backchannel that can be used to |
| communicate with the DUT. |
| @param shutdown_other_devices: If True, shutdown all devices except |
| cellular. |
| @param modem_pattern: Search string used when looking for the modem. |
| |
| """ |
| # Tests should use this main loop instead of creating their own. |
| self.mainloop = dbus.mainloop.glib.DBusGMainLoop(set_as_default=True) |
| self.bus = dbus.SystemBus(mainloop=self.mainloop) |
| |
| self.shill = None |
| self.modem_manager = None |
| self.modem = None |
| self.modem_path = None |
| self._backchannel = None |
| |
| self._modem_pattern = modem_pattern |
| self._skip_modem_reset = skip_modem_reset |
| |
| self._nested = None |
| self._context_managers = [] |
| if use_backchannel: |
| self._backchannel = backchannel.Backchannel() |
| self._context_managers.append(self._backchannel) |
| if shutdown_other_devices: |
| self._context_managers.append( |
| shill_context.AllowedTechnologiesContext( |
| [shill_proxy.ShillProxy.TECHNOLOGY_CELLULAR])) |
| |
| |
| @contextlib.contextmanager |
| def _disable_shill_autoconnect(self): |
| self._enable_shill_cellular_autoconnect(False) |
| yield |
| self._enable_shill_cellular_autoconnect(True) |
| |
| |
| def __enter__(self): |
| try: |
| # Temporarily disable shill autoconnect to cellular service while |
| # the test environment is setup to prevent a race condition |
| # between disconnecting the modem in _verify_cellular_service() |
| # and shill autoconnect. |
| with self._disable_shill_autoconnect(): |
| self._nested = contextlib.nested(*self._context_managers) |
| self._nested.__enter__() |
| |
| self._initialize_shill() |
| |
| # Perform SIM verification now to ensure that we can enable the |
| # modem in _initialize_modem_components(). ModemManager does not |
| # allow enabling a modem without a SIM. |
| self._verify_sim() |
| self._initialize_modem_components() |
| |
| self._setup_logging() |
| |
| self._verify_backchannel() |
| self._wait_for_modem_registration() |
| self._verify_cellular_service() |
| |
| return self |
| except (error.TestError, dbus.DBusException, |
| shill_proxy.ShillProxyError) as e: |
| except_type, except_value, except_traceback = sys.exc_info() |
| lines = traceback.format_exception(except_type, except_value, |
| except_traceback) |
| logging.error('Error during test initialization:\n' + |
| ''.join(lines)) |
| self.__exit__(*sys.exc_info()) |
| raise error.TestError('INIT_ERROR: %s' % str(e)) |
| except: |
| self.__exit__(*sys.exc_info()) |
| raise |
| |
| |
| def __exit__(self, exception, value, traceback): |
| if self._nested: |
| return self._nested.__exit__(exception, value, traceback) |
| self.shill = None |
| self.modem_manager = None |
| self.modem = None |
| self.modem_path = None |
| |
| |
| def _get_shill_cellular_device_object(self): |
| return utils.poll_for_condition( |
| lambda: self.shill.find_cellular_device_object(), |
| exception=error.TestError('Cannot find cellular device in shill. ' |
| 'Is the modem plugged in?'), |
| timeout=shill_proxy.ShillProxy.DEVICE_ENUMERATION_TIMEOUT) |
| |
| |
| def _enable_modem(self): |
| modem_device = self._get_shill_cellular_device_object() |
| try: |
| modem_device.Enable() |
| except dbus.DBusException as e: |
| if (e.get_dbus_name() != |
| shill_proxy.ShillProxy.ERROR_IN_PROGRESS): |
| raise |
| |
| utils.poll_for_condition( |
| lambda: modem_device.GetProperties()['Powered'], |
| exception=error.TestError( |
| 'Failed to enable modem.'), |
| timeout=shill_proxy.ShillProxy.DEVICE_ENABLE_DISABLE_TIMEOUT) |
| |
| |
| def _enable_shill_cellular_autoconnect(self, enable): |
| shill = cellular_proxy.CellularProxy.get_proxy(self.bus) |
| shill.manager.SetProperty( |
| shill_proxy.ShillProxy. |
| MANAGER_PROPERTY_NO_AUTOCONNECT_TECHNOLOGIES, |
| '' if enable else 'cellular') |
| |
| |
| def _is_unsupported_error(self, e): |
| return (e.get_dbus_name() == |
| shill_proxy.ShillProxy.ERROR_NOT_SUPPORTED or |
| (e.get_dbus_name() == |
| shill_proxy.ShillProxy.ERROR_FAILURE and |
| 'operation not supported' in e.get_dbus_message())) |
| |
| |
| def _reset_modem(self): |
| modem_device = self._get_shill_cellular_device_object() |
| try: |
| # Cromo/MBIM modems do not support being reset. |
| self.shill.reset_modem(modem_device, expect_service=False) |
| except dbus.DBusException as e: |
| if not self._is_unsupported_error(e): |
| raise |
| |
| |
| def _initialize_shill(self): |
| """Get access to shill.""" |
| # CellularProxy.get_proxy() checks to see if shill is running and |
| # responding to DBus requests. It returns None if that's not the case. |
| self.shill = cellular_proxy.CellularProxy.get_proxy(self.bus) |
| if self.shill is None: |
| raise error.TestError('Cannot connect to shill, is shill running?') |
| |
| |
| def _initialize_modem_components(self): |
| """Reset the modem and get access to modem components.""" |
| # Enable modem first so shill initializes the modemmanager proxies so |
| # we can call reset on it. |
| self._enable_modem() |
| if not self._skip_modem_reset: |
| self._reset_modem() |
| |
| # PickOneModem() makes sure there's a modem manager and that there is |
| # one and only one modem. |
| self.modem_manager, self.modem_path = \ |
| mm.PickOneModem(self._modem_pattern) |
| self.modem = self.modem_manager.GetModem(self.modem_path) |
| if self.modem is None: |
| raise error.TestError('Cannot get modem object at %s.' % |
| self.modem_path) |
| |
| |
| def _setup_logging(self): |
| self.shill.set_logging_for_cellular_test() |
| self.modem_manager.SetDebugLogging() |
| |
| |
| def _verify_sim(self): |
| """Verify SIM is valid. |
| |
| Make sure a SIM in inserted and that it is not locked. |
| |
| @raise error.TestError if SIM does not exist or is locked. |
| |
| """ |
| modem_device = self._get_shill_cellular_device_object() |
| props = modem_device.GetProperties() |
| |
| # No SIM in CDMA modems. |
| family = props[ |
| cellular_proxy.CellularProxy.DEVICE_PROPERTY_TECHNOLOGY_FAMILY] |
| if (family == |
| cellular_proxy.CellularProxy. |
| DEVICE_PROPERTY_TECHNOLOGY_FAMILY_CDMA): |
| return |
| |
| # Make sure there is a SIM. |
| if not props[cellular_proxy.CellularProxy.DEVICE_PROPERTY_SIM_PRESENT]: |
| raise error.TestError('There is no SIM in the modem.') |
| |
| # Make sure SIM is not locked. |
| lock_status = props.get( |
| cellular_proxy.CellularProxy.DEVICE_PROPERTY_SIM_LOCK_STATUS, |
| None) |
| if lock_status is None: |
| raise error.TestError('Failed to read SIM lock status.') |
| locked = lock_status.get( |
| cellular_proxy.CellularProxy.PROPERTY_KEY_SIM_LOCK_ENABLED, |
| None) |
| if locked is None: |
| raise error.TestError('Failed to read SIM LockEnabled status.') |
| elif locked: |
| raise error.TestError( |
| 'SIM is locked, test requires an unlocked SIM.') |
| |
| |
| def _verify_backchannel(self): |
| """Verify backchannel is on an ethernet device. |
| |
| @raise error.TestError if backchannel is not on an ethernet device. |
| |
| """ |
| if self._backchannel is None: |
| return |
| |
| if not self._backchannel.is_using_ethernet(): |
| raise error.TestError('An ethernet connection is required between ' |
| 'the test server and the device under test.') |
| |
| |
| def _wait_for_modem_registration(self): |
| """Wait for the modem to register with the network. |
| |
| @raise error.TestError if modem is not registered. |
| |
| """ |
| utils.poll_for_condition( |
| self.modem.ModemIsRegistered, |
| exception=error.TestError( |
| 'Modem failed to register with the network.'), |
| timeout=cellular_proxy.CellularProxy.SERVICE_REGISTRATION_TIMEOUT) |
| |
| |
| def _verify_cellular_service(self): |
| """Make sure a cellular service exists. |
| |
| The cellular service should not be connected to the network. |
| |
| @raise error.TestError if cellular service does not exist or if |
| there are multiple cellular services. |
| |
| """ |
| service = self.shill.wait_for_cellular_service_object() |
| |
| try: |
| service.Disconnect() |
| except dbus.DBusException as e: |
| if (e.get_dbus_name() != |
| cellular_proxy.CellularProxy.ERROR_NOT_CONNECTED): |
| raise |
| success, state, _ = self.shill.wait_for_property_in( |
| service, |
| cellular_proxy.CellularProxy.SERVICE_PROPERTY_STATE, |
| ('idle',), |
| cellular_proxy.CellularProxy.SERVICE_DISCONNECT_TIMEOUT) |
| if not success: |
| raise error.TestError( |
| 'Cellular service needs to start in the "idle" state. ' |
| 'Current state is "%s". ' |
| 'Modem disconnect may have failed.' % |
| state) |
| |
| |
| class CellularOTATestEnvironment(CellularTestEnvironment): |
| """Setup and verify cellular over-the-air (OTA) test environment. """ |
| def __init__(self, **kwargs): |
| super(CellularOTATestEnvironment, self).__init__(**kwargs) |
| |
| |
| class CellularPseudoMMTestEnvironment(CellularTestEnvironment): |
| """Setup and verify cellular pseudomodem test environment. """ |
| def __init__(self, pseudomm_args=None, **kwargs): |
| """ |
| @param pseudomm_args: Tuple of arguments passed to the pseudomodem, see |
| pseudomodem_context.py for description of each argument in the |
| tuple: (flags_map, block_output, bus) |
| |
| """ |
| kwargs["skip_modem_reset"] = True |
| super(CellularPseudoMMTestEnvironment, self).__init__(**kwargs) |
| self._context_managers.append( |
| pseudomodem_context.PseudoModemManagerContext( |
| True, bus=self.bus, *pseudomm_args)) |
