[]string{},
		},
	}

	for i, tc := range testCases {
		names := getMissingSiteNames(tc.oldDepIDs, tc.newDepIDs, tc.currSites)
		if len(names) != len(tc.expNames) {
			t.Errorf("Test %d: Expected `%v`, got `%v`", i+1, tc.expNames, names)
		}
	}

// parse size from content-range header
func parseSizeFromContentRange(h http.Header) (sz int64, err error) {
	cr := h.Get(xhttp.ContentRange)
	if cr == "" {
		return sz, fmt.Errorf("Content-Range not set")
	}
	parts := contentRangeRegexp.FindStringSubmatch(cr)
	if len(parts) != 4 {
		return sz, fmt.Errorf("invalid Content-Range header %s", cr)
	}
	if parts[3] == "*" {
		return -1, nil
	}
	var usz uint64

func scanDataFolder(ctx context.Context, disks []StorageAPI, drive *xlStorage, cache dataUsageCache, getSize getSizeFn, scanMode madmin.HealScanMode, weSleep func() bool) (dataUsageCache, error) {
	switch cache.Info.Name {
	case "", dataUsageRoot:
		return cache, errors.New("internal error: root scan attempted")
	}
	basePath := drive.drivePath
	updatePath, closeDisk := globalScannerMetrics.currentPathUpdater(basePath, cache.Info.Name)
	defer closeDisk()

	maxConcurrentAsyncSend = 50000
)

// Target - event target interface
type Target interface {
	ID() TargetID
	IsActive() (bool, error)
	Save(Event) error
	SendFromStore(store.Key) error
	Close() error
	Store() TargetStore
}

// TargetStore is a shallow version of a target.Store
type TargetStore interface {
	Len() int
}

func (c *Target) Validate() error {
	return nil
}

// Endpoint returns the backend endpoint
func (c *Target) Endpoint() string {
	return ""
}

func (c *Target) String() string {
	return "console"
}

// Send log message 'e' to console
func (c *Target) Send(e interface{}) error {
	entry, ok := e.(log.Entry)
	if !ok {
		return fmt.Errorf("Uexpected log entry structure %#v", e)
	}

	err = gob.NewDecoder(waitReader).Decode(&result)
	if err != nil {
		return result, err
	}
	if result.Error != "" {
		return result, errors.New(result.Error)
	}
	return result, nil
}

func (client *peerRESTClient) DriveSpeedTest(ctx context.Context, opts madmin.DriveSpeedTestOpts) (madmin.DriveSpeedTestResult, error) {
	queryVals := make(url.Values)
	if opts.Serial {
		queryVals.Set("serial", "true")
	}

		cfg.ReferrerPolicy = referrerPolicy
	default:
		return cfg, fmt.Errorf("invalid value %v for %s", referrerPolicy, browserReferrerPolicy)
	}

	return cfg, nil
}

// GetCSPolicy - Get the Content security Policy
func (browseCfg *Config) GetCSPolicy() string {

	return false
}

// AddFreeVersion adds a free-version if needed for fi.VersionID version.
// Free-version will be added if fi.VersionID has transitioned.
func (x *xlMetaV2) AddFreeVersion(fi FileInfo) error {
	var uv uuid.UUID
	var err error
	switch fi.VersionID {
	case "", nullVersionID:
	default:
		uv, err = uuid.Parse(fi.VersionID)
		if err != nil {
			return err
		}
	}

	for i, version := range x.versions {

}

// Validate NSQArgs fields
func (n NSQArgs) Validate() error {
	if !n.Enable {
		return nil
	}

	if n.NSQDAddress.IsEmpty() {
		return errors.New("empty nsqdAddress")
	}

	if n.Topic == "" {
		return errors.New("empty topic")
	}
	if n.QueueDir != "" {
		if !filepath.IsAbs(n.QueueDir) {
			return errors.New("queueDir path should be absolute")
		}
	}

	return nil
}

	case tierConfigFormat:
	default:
		return nil, fmt.Errorf("tierConfigInit: unknown format: %d", format)
	}

	cfg := NewTierConfigMgr()
	switch version := binary.LittleEndian.Uint16(data[2:4]); version {
	case tierConfigV1, tierConfigVersion:
		if _, decErr := cfg.UnmarshalMsg(data[4:]); decErr != nil {
			return nil, decErr
		}
	default:
		return nil, fmt.Errorf("tierConfigInit: unknown version: %d", version)
	}