def test_get_node_by_instance_invalid_uuid(self):
    self.assertRaises(exception.InvalidUUID, self.dbapi.get_node_by_instance, 'fake_uuid')
def test_get_node_by_instance_invalid_uuid(self):
    self.assertRaises(exception.InvalidUUID, self.dbapi.get_node_by_instance, 'fake_uuid')