}},
		},
	}}
	return minReplicasCases
}

func TestValidateHorizontalPodAutoscalerScaleToZeroEnabled(t *testing.T) {
	// Enable HPAScaleToZero feature gate.
	featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.HPAScaleToZero, true)

	zeroMinReplicasCases := prepareMinReplicasCases(t, 0)
	for _, successCase := range zeroMinReplicasCases {

	// MinReplicasLowerBound represents a minimum value for minReplicas
	// 0 when HPA scale-to-zero feature is enabled
	var minReplicasLowerBound int32

	if utilfeature.DefaultFeatureGate.Enabled(features.HPAScaleToZero) {
		minReplicasLowerBound = 0
	} else {
		minReplicasLowerBound = 1
	}
	allErrs = append(allErrs, validateHorizontalPodAutoscalerSpec(autoscaler.Spec, field.NewPath("spec"), minReplicasLowerBound)...)

	// owner: @dxist
	// alpha: v1.16
	//
	// Enables support of HPA scaling to zero pods when an object or custom metric is configured.
	HPAScaleToZero featuregate.Feature = "HPAScaleToZero"

	// owner: @deepakkinni @xing-yang
	// kep: https://kep.k8s.io/2680
	// alpha: v1.23
	//
	// Honor Persistent Volume Reclaim Policy when it is "Delete" irrespective of PV-PVC

	"minReplicas":    "minReplicas is the lower limit for the number of replicas to which the autoscaler can scale down.  It defaults to 1 pod.  minReplicas is allowed to be 0 if the alpha feature gate HPAScaleToZero is enabled and at least one Object or External metric is configured.  Scaling is active as long as at least one metric value is available.",

	"minReplicas":                    "minReplicas is the lower limit for the number of replicas to which the autoscaler can scale down.  It defaults to 1 pod.  minReplicas is allowed to be 0 if the alpha feature gate HPAScaleToZero is enabled and at least one Object or External metric is configured.  Scaling is active as long as at least one metric value is available.",

  // minReplicas is the lower limit for the number of replicas to which the autoscaler
  // can scale down.  It defaults to 1 pod.  minReplicas is allowed to be 0 if the
  // alpha feature gate HPAScaleToZero is enabled and at least one Object or External
  // metric is configured.  Scaling is active as long as at least one metric value is
  // available.
  // +optional
  optional int32 minReplicas = 2;

  // minReplicas is the lower limit for the number of replicas to which the autoscaler
  // can scale down.  It defaults to 1 pod.  minReplicas is allowed to be 0 if the
  // alpha feature gate HPAScaleToZero is enabled and at least one Object or External
  // metric is configured.  Scaling is active as long as at least one metric value is
  // available.
  // +optional
  optional int32 minReplicas = 2;

  // minReplicas is the lower limit for the number of replicas to which the autoscaler
  // can scale down.  It defaults to 1 pod.  minReplicas is allowed to be 0 if the
  // alpha feature gate HPAScaleToZero is enabled and at least one Object or External
  // metric is configured.  Scaling is active as long as at least one metric value is
  // available.
  // +optional
  optional int32 minReplicas = 2;

	"minReplicas":    "minReplicas is the lower limit for the number of replicas to which the autoscaler can scale down.  It defaults to 1 pod.  minReplicas is allowed to be 0 if the alpha feature gate HPAScaleToZero is enabled and at least one Object or External metric is configured.  Scaling is active as long as at least one metric value is available.",

  // minReplicas is the lower limit for the number of replicas to which the autoscaler
  // can scale down.  It defaults to 1 pod.  minReplicas is allowed to be 0 if the
  // alpha feature gate HPAScaleToZero is enabled and at least one Object or External
  // metric is configured.  Scaling is active as long as at least one metric value is
  // available.
  // +optional
  optional int32 minReplicas = 2;