Update from https://crrev.com/316786

build/android/pylib/utils/mock_calls_test.py

 #!/usr/bin/env python
 # Copyright 2014 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 mock_calls.py.
 """
 
 import logging
@@ skipping 20 matching lines @@
     logging.debug('(device %s) checking device online', self)
     return True
 
   def Shell(self, cmd):
     logging.debug('(device %s) running command %r', self, cmd)
     return "nice output\n"
 
   def Reboot(self):
     logging.debug('(device %s) rebooted!', self)
 
+  @property
+  def build_version_sdk(self):
+    logging.debug('(device %s) getting build_version_sdk', self)
+    return constants.ANDROID_SDK_VERSION_CODES.LOLLIPOP
+
 
 class TestCaseWithAssertCallsTest(mock_calls.TestCase):
   def setUp(self):
     self.adb = _DummyAdb()
 
   def ShellError(self):
     def action(cmd):
       raise ValueError('(device %s) command %r is not nice' % (self.adb, cmd))
     return action
 
@@ skipping 33 matching lines @@
 
   def testPatchCall_global(self):
     with self.patch_call(mock.call.os.getcwd, return_value='/some/path'):
       self.assertEquals('/some/path', os.getcwd())
 
   def testPatchCall_withSideEffect(self):
     with self.patch_call(self.call.adb.Shell, side_effect=ValueError):
       with self.assertRaises(ValueError):
         self.adb.Shell('echo hello')
 
+  def testPatchCall_property(self):
+    self.assertEquals(constants.ANDROID_SDK_VERSION_CODES.LOLLIPOP,
+                      self.adb.build_version_sdk)
+    with self.patch_call(
+        self.call.adb.build_version_sdk,
+        return_value=constants.ANDROID_SDK_VERSION_CODES.KITKAT):
+      self.assertEquals(constants.ANDROID_SDK_VERSION_CODES.KITKAT,
+                        self.adb.build_version_sdk)
+    self.assertEquals(constants.ANDROID_SDK_VERSION_CODES.LOLLIPOP,
+                      self.adb.build_version_sdk)
+
   def testAssertCalls_succeeds_simple(self):
     self.assertEquals(42, self.get_answer())
     with self.assertCall(self.call.get_answer(), 123):
       self.assertEquals(123, self.get_answer())
     self.assertEquals(42, self.get_answer())
 
   def testAssertCalls_succeeds_multiple(self):
     with self.assertCalls(
         (mock.call.os.getcwd(), '/some/path'),
         (self.call.echo('hello'), 'hello'),
@@ skipping 46 matching lines @@
     self.watchMethodCalls(self.call.adb)
     with self.assertRaises(AssertionError):
       with self.assertCalls():
         self.adb.IsOnline()
 
 
 if __name__ == '__main__':
   logging.getLogger().setLevel(logging.DEBUG)
   unittest.main(verbosity=2)