[TestMethod]
public void OrientationTest()
{
   IRotatable rotatable = ((IRotatable)_driver);
   rotatable.Orientation = ScreenOrientation.Portrait;
   Assert.AreEqual(ScreenOrientation.Portrait, rotatable.Orientation);
}

[TestMethod]
public void LockTest()
{
   _driver.Lock();
   Assert.AreEqual(true, _driver.IsLocked());
   _driver.Unlock();
   Assert.AreEqual(false, _driver.IsLocked());
}