def test_init_id_required(self):
    with self.assertRaises(Exception):
      dataset = Dataset()

    dataset = Dataset('dataset-id-here')
    self.assertEqual('dataset-id-here', dataset.id())
    self.assertEqual(None, dataset.connection())
 def test_entity_factory(self):
   dataset = Dataset('test')
   entity = dataset.entity('TestKind')
   self.assertIsInstance(entity, Entity)
   self.assertEqual('TestKind', entity.kind())
 def test_query_factory(self):
   dataset = Dataset('test')
   query = dataset.query()
   self.assertIsInstance(query, Query)
   self.assertEqual(dataset, query.dataset())