var tests = []struct {
		name           string
		etcd           *kubeadmapi.Etcd
		expectedErrors bool
	}{
		{
			name:           "either .Etcd.Local or .Etcd.External is required",
			etcd:           &kubeadmapi.Etcd{},
			expectedErrors: true,
		},
		{
			name: ".Etcd.Local and .Etcd.External are mutually exclusive",
			etcd: &kubeadmapi.Etcd{
				Local: &kubeadmapi.LocalEtcd{

      params_ref+=" --etcd-certfile=${ETCD_APISERVER_CLIENT_CERT_PATH}"
      params_ref+=" --etcd-keyfile=${ETCD_APISERVER_CLIENT_KEY_PATH}"
  elif [[ -z "${ETCD_APISERVER_CA_KEY:-}" && -z "${ETCD_APISERVER_CA_CERT:-}" && -z "${ETCD_APISERVER_SERVER_KEY:-}" && -z "${ETCD_APISERVER_SERVER_CERT:-}" && -z "${ETCD_APISERVER_CLIENT_KEY:-}" && -z "${ETCD_APISERVER_CLIENT_CERT:-}" ]]; then

}

// SetDefaults_Etcd assigns default values for the proxy
func SetDefaults_Etcd(obj *ClusterConfiguration) {
	if obj.Etcd.External == nil && obj.Etcd.Local == nil {
		obj.Etcd.Local = &LocalEtcd{}
	}
	if obj.Etcd.Local != nil {
		if obj.Etcd.Local.DataDir == "" {
			obj.Etcd.Local.DataDir = DefaultEtcdDataDir
		}
	}
}

// SetDefaults_JoinConfiguration assigns default values to a regular node

// ClusterConfiguration contains cluster-wide configuration for a kubeadm cluster
type ClusterConfiguration struct {
	metav1.TypeMeta `json:",inline"`

	// Etcd holds configuration for etcd.
	// +optional
	Etcd Etcd `json:"etcd,omitempty"`

	// Networking holds configuration for the networking topology of the cluster.
	// +optional
	Networking Networking `json:"networking,omitempty"`

				KubernetesVersion: dummyKubernetesVersionStr,
			},
		},
		{
			name: "external etcd configuration",
			cfg: kubeadmapiv1.ClusterConfiguration{
				Etcd: kubeadmapiv1.Etcd{
					External: &kubeadmapiv1.ExternalEtcd{
						Endpoints: []string{"https://some.etcd.com:2379"},
					},
				},
				KubernetesVersion: dummyKubernetesVersionStr,
			},

	ServerCertSANs []string
	// PeerCertSANs sets extra Subject Alternative Names for the etcd peer signing cert.
	PeerCertSANs []string
}

// ExternalEtcd describes an external etcd cluster
type ExternalEtcd struct {

	// Endpoints of etcd members. Useful for using external etcd.
	// If not provided, kubeadm will run etcd in a static pod.
	Endpoints []string

    entrypoint: 'bash'
    dir: ./cluster/images/etcd
    env:
      - DOCKER_CLI_EXPERIMENTAL=enabled
      - REGISTRY=gcr.io/$PROJECT_ID
      - PUSH_REGISTRY=gcr.io/$PROJECT_ID
      - IMAGE=gcr.io/$PROJECT_ID/etcd
      - BUILD_IMAGE=debian-build
      - TMPDIR=/workspace
      - HOME=/root  # for docker buildx
    args:
      - '-c'

	}); err != nil {
		return err
	}
	if err := s.AddGeneratedConversionFunc((*Etcd)(nil), (*kubeadm.Etcd)(nil), func(a, b interface{}, scope conversion.Scope) error {
		return Convert_v1beta3_Etcd_To_kubeadm_Etcd(a.(*Etcd), b.(*kubeadm.Etcd), scope)
	}); err != nil {
		return err
	}
	if err := s.AddGeneratedConversionFunc((*kubeadm.Etcd)(nil), (*Etcd)(nil), func(a, b interface{}, scope conversion.Scope) error {

// If you add something to this list, it should be in a logical grouping.
// Each of them can be nil to leave the feature unconfigured on ApplyTo.
type RecommendedOptions struct {
	Etcd           *EtcdOptions
	SecureServing  *SecureServingOptionsWithLoopback
	Authentication *DelegatingAuthenticationOptions
	Authorization  *DelegatingAuthorizationOptions
	Audit          *AuditOptions

limitations under the License.
*/

package feature

import (
	"context"
	"fmt"
	"testing"

	"github.com/stretchr/testify/assert"
	clientv3 "go.etcd.io/etcd/client/v3"
	"k8s.io/apiserver/pkg/storage"
)

type mockEndpointVersion struct {
	Endpoint string
	Version  string
	Error    error
}