| #!/usr/bin/env python |
| # Copyright 2015 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. |
| |
| """ |
| Unit tests for the contents of shared_prefs.py (mostly SharedPrefs). |
| """ |
| |
| import logging |
| import os |
| import sys |
| import unittest |
| |
| from devil.android import device_utils |
| from devil.android.sdk import shared_prefs |
| from pylib import constants |
| |
| sys.path.append(os.path.join( |
| constants.DIR_SOURCE_ROOT, 'third_party', 'pymock')) |
| import mock # pylint: disable=import-error |
| |
| |
| def MockDeviceWithFiles(files=None): |
| if files is None: |
| files = {} |
| |
| def file_exists(path): |
| return path in files |
| |
| def write_file(path, contents, **_kwargs): |
| files[path] = contents |
| |
| def read_file(path, **_kwargs): |
| return files[path] |
| |
| device = mock.MagicMock(spec=device_utils.DeviceUtils) |
| device.FileExists = mock.Mock(side_effect=file_exists) |
| device.WriteFile = mock.Mock(side_effect=write_file) |
| device.ReadFile = mock.Mock(side_effect=read_file) |
| return device |
| |
| |
| class SharedPrefsTest(unittest.TestCase): |
| |
| def setUp(self): |
| self.device = MockDeviceWithFiles({ |
| '/data/data/com.some.package/shared_prefs/prefs.xml': |
| "<?xml version='1.0' encoding='utf-8' standalone='yes' ?>\n" |
| '<map>\n' |
| ' <int name="databaseVersion" value="107" />\n' |
| ' <boolean name="featureEnabled" value="false" />\n' |
| ' <string name="someHashValue">249b3e5af13d4db2</string>\n' |
| '</map>'}) |
| self.expected_data = {'databaseVersion': 107, |
| 'featureEnabled': False, |
| 'someHashValue': '249b3e5af13d4db2'} |
| |
| def testPropertyLifetime(self): |
| prefs = shared_prefs.SharedPrefs( |
| self.device, 'com.some.package', 'prefs.xml') |
| self.assertEquals(len(prefs), 0) # collection is empty before loading |
| prefs.SetInt('myValue', 444) |
| self.assertEquals(len(prefs), 1) |
| self.assertEquals(prefs.GetInt('myValue'), 444) |
| self.assertTrue(prefs.HasProperty('myValue')) |
| prefs.Remove('myValue') |
| self.assertEquals(len(prefs), 0) |
| self.assertFalse(prefs.HasProperty('myValue')) |
| with self.assertRaises(KeyError): |
| prefs.GetInt('myValue') |
| |
| def testPropertyType(self): |
| prefs = shared_prefs.SharedPrefs( |
| self.device, 'com.some.package', 'prefs.xml') |
| prefs.SetInt('myValue', 444) |
| self.assertEquals(prefs.PropertyType('myValue'), 'int') |
| with self.assertRaises(TypeError): |
| prefs.GetString('myValue') |
| with self.assertRaises(TypeError): |
| prefs.SetString('myValue', 'hello') |
| |
| def testLoad(self): |
| prefs = shared_prefs.SharedPrefs( |
| self.device, 'com.some.package', 'prefs.xml') |
| self.assertEquals(len(prefs), 0) # collection is empty before loading |
| prefs.Load() |
| self.assertEquals(len(prefs), len(self.expected_data)) |
| self.assertEquals(prefs.AsDict(), self.expected_data) |
| self.assertFalse(prefs.changed) |
| |
| def testClear(self): |
| prefs = shared_prefs.SharedPrefs( |
| self.device, 'com.some.package', 'prefs.xml') |
| prefs.Load() |
| self.assertEquals(prefs.AsDict(), self.expected_data) |
| self.assertFalse(prefs.changed) |
| prefs.Clear() |
| self.assertEquals(len(prefs), 0) # collection is empty now |
| self.assertTrue(prefs.changed) |
| |
| def testCommit(self): |
| prefs = shared_prefs.SharedPrefs( |
| self.device, 'com.some.package', 'other_prefs.xml') |
| self.assertFalse(self.device.FileExists(prefs.path)) # file does not exist |
| prefs.Load() |
| self.assertEquals(len(prefs), 0) # file did not exist, collection is empty |
| prefs.SetInt('magicNumber', 42) |
| prefs.SetFloat('myMetric', 3.14) |
| prefs.SetLong('bigNumner', 6000000000) |
| prefs.SetStringSet('apps', ['gmail', 'chrome', 'music']) |
| self.assertFalse(self.device.FileExists(prefs.path)) # still does not exist |
| self.assertTrue(prefs.changed) |
| prefs.Commit() |
| self.assertTrue(self.device.FileExists(prefs.path)) # should exist now |
| self.device.KillAll.assert_called_once_with(prefs.package, exact=True, |
| as_root=True, quiet=True) |
| self.assertFalse(prefs.changed) |
| |
| prefs = shared_prefs.SharedPrefs( |
| self.device, 'com.some.package', 'other_prefs.xml') |
| self.assertEquals(len(prefs), 0) # collection is empty before loading |
| prefs.Load() |
| self.assertEquals(prefs.AsDict(), { |
| 'magicNumber': 42, |
| 'myMetric': 3.14, |
| 'bigNumner': 6000000000, |
| 'apps': ['gmail', 'chrome', 'music']}) # data survived roundtrip |
| |
| def testAsContextManager_onlyReads(self): |
| with shared_prefs.SharedPrefs( |
| self.device, 'com.some.package', 'prefs.xml') as prefs: |
| self.assertEquals(prefs.AsDict(), self.expected_data) # loaded and ready |
| self.assertEquals(self.device.WriteFile.call_args_list, []) # did not write |
| |
| def testAsContextManager_readAndWrite(self): |
| with shared_prefs.SharedPrefs( |
| self.device, 'com.some.package', 'prefs.xml') as prefs: |
| prefs.SetBoolean('featureEnabled', True) |
| prefs.Remove('someHashValue') |
| prefs.SetString('newString', 'hello') |
| |
| self.assertTrue(self.device.WriteFile.called) # did write |
| with shared_prefs.SharedPrefs( |
| self.device, 'com.some.package', 'prefs.xml') as prefs: |
| # changes persisted |
| self.assertTrue(prefs.GetBoolean('featureEnabled')) |
| self.assertFalse(prefs.HasProperty('someHashValue')) |
| self.assertEquals(prefs.GetString('newString'), 'hello') |
| self.assertTrue(prefs.HasProperty('databaseVersion')) # still there |
| |
| def testAsContextManager_commitAborted(self): |
| with self.assertRaises(TypeError): |
| with shared_prefs.SharedPrefs( |
| self.device, 'com.some.package', 'prefs.xml') as prefs: |
| prefs.SetBoolean('featureEnabled', True) |
| prefs.Remove('someHashValue') |
| prefs.SetString('newString', 'hello') |
| prefs.SetInt('newString', 123) # oops! |
| |
| self.assertEquals(self.device.WriteFile.call_args_list, []) # did not write |
| with shared_prefs.SharedPrefs( |
| self.device, 'com.some.package', 'prefs.xml') as prefs: |
| # contents were not modified |
| self.assertEquals(prefs.AsDict(), self.expected_data) |
| |
| if __name__ == '__main__': |
| logging.getLogger().setLevel(logging.DEBUG) |
| unittest.main(verbosity=2) |
