Refactor test scripts for android to improve performance

build/android/pylib/device/device_utils_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 device_utils.py (mostly DeviceUtils).
 """
 
 # pylint: disable=C0321
@@ skipping 912 matching lines @@
   def testForceStop(self):
     with self.assertCall(
         self.call.adb.Shell('am force-stop this.is.a.test.package'),
         ''):
       self.device.ForceStop('this.is.a.test.package')
 
 
 class DeviceUtilsClearApplicationStateTest(DeviceUtilsNewImplTest):
 
   def testClearApplicationState_packageDoesntExist(self):
-    with self.assertCall(
-        self.call.device.GetApplicationPath('this.package.does.not.exist'),
-        None):
+    with self.assertCalls(
+        (self.call.adb.Shell('getprop ro.build.version.sdk'), '17\n'),
+        (self.call.device.GetApplicationPath('this.package.does.not.exist'),
+         None)):
+      self.device.ClearApplicationState('this.package.does.not.exist')
+
+  def testClearApplicationState_packageDoesntExistOnAndroidJBMR2OrAbove(self):
+    with self.assertCalls(
+        (self.call.adb.Shell('getprop ro.build.version.sdk'), '18\n'),
+        (self.call.adb.Shell('pm clear this.package.does.not.exist'),
+         'Failed\r\n')):
       self.device.ClearApplicationState('this.package.does.not.exist')
 
   def testClearApplicationState_packageExists(self):
     with self.assertCalls(
+        (self.call.adb.Shell('getprop ro.build.version.sdk'), '17\n'),
         (self.call.device.GetApplicationPath('this.package.exists'),
          '/data/app/this.package.exists.apk'),
         (self.call.adb.Shell('pm clear this.package.exists'),
          'Success\r\n')):
       self.device.ClearApplicationState('this.package.exists')
 
+  def testClearApplicationState_packageExistsOnAndroidJBMR2OrAbove(self):
+    with self.assertCalls(
+        (self.call.adb.Shell('getprop ro.build.version.sdk'), '18\n'),
+        (self.call.adb.Shell('pm clear this.package.exists'),
+         'Success\r\n')):
+      self.device.ClearApplicationState('this.package.exists')
+
 
 class DeviceUtilsSendKeyEventTest(DeviceUtilsNewImplTest):
 
   def testSendKeyEvent(self):
     with self.assertCall(self.call.adb.Shell('input keyevent 66'), ''):
       self.device.SendKeyEvent(66)
 
 
 class DeviceUtilsPushChangedFilesIndividuallyTest(DeviceUtilsNewImplTest):
 
@@ skipping 509 matching lines @@
       self.assertTrue(
           isinstance(device, device_utils.DeviceUtils)
           and serial == str(device),
           'Expected a DeviceUtils object with serial %s' % serial)
 
 
 if __name__ == '__main__':
   logging.getLogger().setLevel(logging.DEBUG)
   unittest.main(verbosity=2)