func (v *fakeBlockVolume) SupportsMetrics() bool { return true }

func (v *fakeBlockVolume) GetMetrics() (*volume.Metrics, error) {
	return expectedBlockMetrics(), nil
}

func expectedBlockMetrics() *volume.Metrics {
	vMetrics := &volume.Metrics{
		Available: resource.NewQuantity(available, resource.BinarySI),
		Capacity:  resource.NewQuantity(capacity, resource.BinarySI),