[Android] Convert to BatteryUtils

build/android/pylib/device/battery_utils_test.py

Index: build/android/pylib/device/battery_utils_test.py
diff --git a/build/android/pylib/device/battery_utils_test.py b/build/android/pylib/device/battery_utils_test.py
index ec81e39684f232f69f1b14c7af576ca5840ab324..32c168b904bcd6cef88ad19a9fa6734c6a360b95 100755
--- a/build/android/pylib/device/battery_utils_test.py
+++ b/build/android/pylib/device/battery_utils_test.py
@@ -141,6 +141,17 @@ class BatteryUtilsGetPowerData(BatteryUtilsTest):
       self.assertEqual(data, {'uid': '1001', 'data': [2.0]})
 
 
+class BatteryUtilsChargeDevice(BatteryUtilsTest):
+
+  @mock.patch('time.sleep', mock.Mock())
+  def testChargeDeviceToLevel(self):
+    with self.assertCalls(
+        (self.call.battery.SetCharging(True)),
+        (self.call.battery.GetBatteryInfo(), {'level': '50'}),
+        (self.call.battery.GetBatteryInfo(), {'level': '100'})):
+      self.battery.ChargeDeviceToLevel(95)
+
+
 if __name__ == '__main__':
   logging.getLogger().setLevel(logging.DEBUG)
   unittest.main(verbosity=2)