func (s *azureVolumeAdder) Set(containerName string) error {
	if trashLifetime != 0 {
		return ErrNotImplemented
	}

	if containerName == "" {
		return errors.New("no container name given")
	}
	if azureStorageAccountName == "" || azureStorageAccountKeyFile == "" {
		return errors.New("-azure-storage-account-name and -azure-storage-account-key-file arguments must given before -azure-storage-container-volume")
	}
	accountKey, err := readKeyFromFile(azureStorageAccountKeyFile)
	if err != nil {
		return err
	}
	azClient, err := storage.NewBasicClient(azureStorageAccountName, accountKey)
	if err != nil {
		return errors.New("creating Azure storage client: " + err.Error())
	}
	if flagSerializeIO {
		log.Print("Notice: -serialize is not supported by azure-blob-container volumes.")
	}
	v := NewAzureBlobVolume(azClient, containerName, flagReadonly, azureStorageReplication)
	if err := v.Check(); err != nil {
		return err
	}
	*s.volumeSet = append(*s.volumeSet, v)
	return nil
}
func NewTestableAzureBlobVolume(t *testing.T, readonly bool, replication int) *TestableAzureBlobVolume {
	azHandler := newAzStubHandler()
	azStub := httptest.NewServer(azHandler)

	var azClient storage.Client

	container := azureTestContainer
	if container == "" {
		// Connect to stub instead of real Azure storage service
		stubURLBase := strings.Split(azStub.URL, "://")[1]
		var err error
		if azClient, err = storage.NewClient(emulatorAccountName, emulatorAccountKey, stubURLBase, storage.DefaultAPIVersion, false); err != nil {
			t.Fatal(err)
		}
		container = "fakecontainername"
	} else {
		// Connect to real Azure storage service
		accountKey, err := readKeyFromFile(azureStorageAccountKeyFile)
		if err != nil {
			t.Fatal(err)
		}
		azClient, err = storage.NewBasicClient(azureStorageAccountName, accountKey)
		if err != nil {
			t.Fatal(err)
		}
	}

	v := NewAzureBlobVolume(azClient, container, readonly, replication)

	return &TestableAzureBlobVolume{
		AzureBlobVolume: v,
		azHandler:       azHandler,
		azStub:          azStub,
		t:               t,
	}
}