def tearDown(self):
final_paths = self._device.GetApplicationPaths(self.PACKAGE)
if self._original_paths != final_paths:
try:
self._device.Uninstall(self.PACKAGE)
except Exception: # pylint: disable=broad-except
pass
with system_app.EnableSystemAppModification(self._device):
for cached_apk, install_path in self._cached_apks.iteritems():
try:
with device_temp_file.DeviceTempFile(
self._device.adb) as tmp:
self._device.adb.Push(cached_apk, tmp.name)
self._device.RunShellCommand(
['mv', tmp.name, install_path],
as_root=True,
check_return=True)
except base_error.BaseError:
logger.warning('Failed to reinstall %s',
os.path.basename(cached_apk))
try:
shutil.rmtree(self._apk_cache_dir)
except IOError:
logger.error('Unable to remove app cache directory.')
super(SystemAppDeviceTest, self).tearDown()
def testDoubleEnableModification(self):
"""Ensures that system app modification logic isn't repeated.
If EnableSystemAppModification uses are nested, inner calls should
not need to perform any of the expensive modification logic.
"""
# pylint: disable=no-self-use,protected-access
mock_device = mock.Mock(spec=device_utils.DeviceUtils)
mock_device.adb = mock.Mock(spec=adb_wrapper.AdbWrapper)
type(mock_device).build_version_sdk = mock.PropertyMock(
return_value=version_codes.LOLLIPOP)
system_props = {}
def dict_setprop(prop_name, value):
system_props[prop_name] = value
def dict_getprop(prop_name):
return system_props.get(prop_name, '')
mock_device.SetProp.side_effect = dict_setprop
mock_device.GetProp.side_effect = dict_getprop
with system_app.EnableSystemAppModification(mock_device):
mock_device.EnableRoot.assert_called_once_with()
mock_device.GetProp.assert_called_once_with(
system_app._ENABLE_MODIFICATION_PROP)
mock_device.SetProp.assert_called_once_with(
system_app._ENABLE_MODIFICATION_PROP, '1')
mock_device.reset_mock()
with system_app.EnableSystemAppModification(mock_device):
self.assertFalse(
mock_device.EnableRoot.mock_calls) # assert not called
mock_device.GetProp.assert_called_once_with(
system_app._ENABLE_MODIFICATION_PROP)
self.assertFalse(
mock_device.SetProp.mock_calls) # assert not called
mock_device.reset_mock()
mock_device.SetProp.assert_called_once_with(
system_app._ENABLE_MODIFICATION_PROP, '0')