hpa.Spec.Behavior.ScaleDown.StabilizationWindowSeconds = &stabilizationWindowSeconds
	}
}

// getReplicasChangePerPeriod function find all the replica changes per period
func getReplicasChangePerPeriod(periodSeconds int32, scaleEvents []timestampedScaleEvent) int32 {
	period := time.Second * time.Duration(periodSeconds)
	cutoff := time.Now().Add(-period)
	var replicas int32

			hcUp := HorizontalController{
				scaleUpEvents: map[string][]timestampedScaleEvent{
					tc.key: append([]timestampedScaleEvent{}, tc.prevScaleEvents...),
				},
			}
			gotReplicasChangeUp := getReplicasChangePerPeriod(60, hcUp.scaleUpEvents[tc.key])
			assert.Equal(t, tc.expectedReplicasChange, gotReplicasChangeUp)
			hcUp.storeScaleEvent(behaviorUp, tc.key, 10, 10+tc.replicaChange)