def test_updated(self):
"""
Check the DataStore base class gets the requested item and returns the
timestamp in position 1 of the tuple.
"""
self.assertTrue(hasattr(DataStore, 'updated'))
ds = DataStore()
timestamp = time.time()
ds._get_item = MagicMock(return_value=(None, timestamp, None))
result = ds.updated('foo')
self.assertEqual(timestamp, result)
ds._get_item.assert_called_once_with('foo')
