def test_run_create(self):
        dataset_id = uuid4()
        volume = self._create_blockdevice_dataset(
            dataset_id=dataset_id,
            maximum_size=LOOPBACK_MINIMUM_ALLOCATABLE_SIZE,
        )

        expected_volume = _blockdevicevolume_from_dataset_id(
            dataset_id=dataset_id, attached_to=None,
            size=LOOPBACK_MINIMUM_ALLOCATABLE_SIZE,
        )

        self.assertEqual(expected_volume, volume)
Test installing a certificate into the OSX keychain when it's already installed
dataset/ETHPy150Open ClusterHQ/flocker/flocker/node/agents/test/test_blockdevice.py/CreateBlockDeviceDatasetImplementationTests.test_run_create--crossover with--dataset/ETHPy150Open saltstack/salt/tests/unit/states/mac_keychain_test.py/KeychainTestCase.test_installed_cert