1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
|
#!/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 unittest
from devil import devil_env
from devil.android import device_utils
from devil.android.sdk import shared_prefs
from devil.android.sdk import version_codes
with devil_env.SysPath(devil_env.PYMOCK_PATH):
import mock # pylint: disable=import-error
INITIAL_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>')
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': INITIAL_XML
})
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):
type(self.device).build_version_sdk = mock.PropertyMock(
return_value=version_codes.LOLLIPOP_MR1)
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 testForceCommit(self):
type(self.device).build_version_sdk = mock.PropertyMock(
return_value=version_codes.LOLLIPOP_MR1)
prefs = shared_prefs.SharedPrefs(self.device, 'com.some.package',
'prefs.xml')
prefs.Load()
new_xml = 'Not valid XML'
self.device.WriteFile('/data/data/com.some.package/shared_prefs/prefs.xml',
new_xml)
prefs.Commit()
# Since we didn't change anything, Commit() should be a no-op.
self.assertEquals(
self.device.ReadFile(
'/data/data/com.some.package/shared_prefs/prefs.xml'), new_xml)
prefs.Commit(force_commit=True)
# Forcing the commit should restore the originally read XML.
self.assertEquals(
self.device.ReadFile(
'/data/data/com.some.package/shared_prefs/prefs.xml'), INITIAL_XML)
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):
type(self.device).build_version_sdk = mock.PropertyMock(
return_value=version_codes.LOLLIPOP_MR1)
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)
def testEncryptedPath(self):
type(self.device).build_version_sdk = mock.PropertyMock(
return_value=version_codes.MARSHMALLOW)
with shared_prefs.SharedPrefs(
self.device, 'com.some.package', 'prefs.xml',
use_encrypted_path=True) as prefs:
self.assertTrue(prefs.path.startswith('/data/data'))
type(self.device).build_version_sdk = mock.PropertyMock(
return_value=version_codes.NOUGAT)
with shared_prefs.SharedPrefs(
self.device, 'com.some.package', 'prefs.xml',
use_encrypted_path=True) as prefs:
self.assertTrue(prefs.path.startswith('/data/user_de/0'))
if __name__ == '__main__':
logging.getLogger().setLevel(logging.DEBUG)
unittest.main(verbosity=2)
|