def test_update(self):
for dataset_name in self.TEST_DATASETS:
dataset = Dataset()
dataset.save(self.test_dataset_ids[dataset_name])
self.assertFalse('field' in dataset.record)
dataset.update({'field': {'key': 'value'}})
dataset = Dataset.find_one(self.test_dataset_ids[dataset_name])
self.assertTrue('field' in dataset.record)
self.assertEqual(dataset.record['field'], {'key': 'value'})
