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#!/usr/bin/env python
# Copyright 2017 The Chromium 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 os
import sys
import unittest
if __name__ == '__main__':
sys.path.append(os.path.abspath(
os.path.join(os.path.dirname(__file__), '..', '..', '..')))
from devil import devil_env
from devil.android import device_utils
from devil.android.sdk import adb_wrapper
from devil.android.sdk import version_codes
from devil.android.tools import system_app
with devil_env.SysPath(devil_env.PYMOCK_PATH):
import mock
class SystemAppTest(unittest.TestCase):
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()
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):
mock_device.EnableRoot.assert_not_called()
mock_device.GetProp.assert_called_once_with(
system_app._ENABLE_MODIFICATION_PROP)
mock_device.SetProp.assert_not_called()
mock_device.reset_mock()
mock_device.SetProp.assert_called_once_with(
system_app._ENABLE_MODIFICATION_PROP, '0')
if __name__ == '__main__':
unittest.main()
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