/*
Copyright 2016 The Kubernetes Authors.
Copyright 2020 Authors of Arktos - file modified.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

package kubelet

import (
	"encoding/json"
	"fmt"
	//"k8s.io/kubernetes/pkg/kubelet/runtimeregistry"
	"net"
	//goruntime "runtime"
	"sort"
	"strconv"
	//"sync/atomic"
	"testing"
	"time"

	"github.com/stretchr/testify/assert"
	//"github.com/stretchr/testify/require"

	//cadvisorapi "github.com/google/cadvisor/info/v1"
	"k8s.io/api/core/v1"
	apiequality "k8s.io/apimachinery/pkg/api/equality"
	//apierrors "k8s.io/apimachinery/pkg/api/errors"
	//"k8s.io/apimachinery/pkg/api/resource"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"k8s.io/apimachinery/pkg/runtime"
	"k8s.io/apimachinery/pkg/util/diff"
	"k8s.io/apimachinery/pkg/util/rand"
	"k8s.io/apimachinery/pkg/util/strategicpatch"
	"k8s.io/apimachinery/pkg/util/uuid"
	//"k8s.io/apimachinery/pkg/util/wait"
	//utilfeature "k8s.io/apiserver/pkg/util/feature"
	//clientset "k8s.io/client-go/kubernetes"
	"k8s.io/client-go/kubernetes/fake"
	//"k8s.io/client-go/rest"
	core "k8s.io/client-go/testing"
	//"k8s.io/component-base/featuregate"
	//featuregatetesting "k8s.io/component-base/featuregate/testing"
	//runtimeapi "k8s.io/cri-api/pkg/apis/runtime/v1alpha2"
	//critest "k8s.io/cri-api/pkg/apis/testing"
	//"k8s.io/kubernetes/pkg/features"
	//kubeletapis "k8s.io/kubernetes/pkg/kubelet/apis"
	//cadvisortest "k8s.io/kubernetes/pkg/kubelet/cadvisor/testing"
	"k8s.io/kubernetes/pkg/kubelet/cm"
	kubecontainer "k8s.io/kubernetes/pkg/kubelet/container"
	"k8s.io/kubernetes/pkg/kubelet/nodestatus"
	"k8s.io/kubernetes/pkg/kubelet/util/sliceutils"
	//kubeletvolume "k8s.io/kubernetes/pkg/kubelet/volumemanager"
	//taintutil "k8s.io/kubernetes/pkg/util/taints"
	//"k8s.io/kubernetes/pkg/version"
	//"k8s.io/kubernetes/pkg/volume/util"
)

const (
	maxImageTagsForTest = 20
)

// generateTestingImageLists generate randomly generated image list and corresponding expectedImageList.
func generateTestingImageLists(count int, maxImages int) ([]kubecontainer.Image, []v1.ContainerImage) {
	// imageList is randomly generated image list
	var imageList []kubecontainer.Image
	for ; count > 0; count-- {
		imageItem := kubecontainer.Image{
			ID:       string(uuid.NewUUID()),
			RepoTags: generateImageTags(),
			Size:     rand.Int63nRange(minImgSize, maxImgSize+1),
		}
		imageList = append(imageList, imageItem)
	}

	expectedImageList := makeExpectedImageList(imageList, maxImages)
	return imageList, expectedImageList
}

func makeExpectedImageList(imageList []kubecontainer.Image, maxImages int) []v1.ContainerImage {
	// expectedImageList is generated by imageList according to size and maxImages
	// 1. sort the imageList by size
	sort.Sort(sliceutils.ByImageSize(imageList))
	// 2. convert sorted imageList to v1.ContainerImage list
	var expectedImageList []v1.ContainerImage
	for _, kubeImage := range imageList {
		apiImage := v1.ContainerImage{
			Names:     kubeImage.RepoTags[0:nodestatus.MaxNamesPerImageInNodeStatus],
			SizeBytes: kubeImage.Size,
		}

		expectedImageList = append(expectedImageList, apiImage)
	}
	// 3. only returns the top maxImages images in expectedImageList
	if maxImages == -1 { // -1 means no limit
		return expectedImageList
	}
	return expectedImageList[0:maxImages]
}

func generateImageTags() []string {
	var tagList []string
	// Generate > MaxNamesPerImageInNodeStatus tags so that the test can verify
	// that kubelet report up to MaxNamesPerImageInNodeStatus tags.
	count := rand.IntnRange(nodestatus.MaxNamesPerImageInNodeStatus+1, maxImageTagsForTest+1)
	for ; count > 0; count-- {
		tagList = append(tagList, "k8s.gcr.io:v"+strconv.Itoa(count))
	}
	return tagList
}

func applyNodeStatusPatch(originalNode *v1.Node, patch []byte) (*v1.Node, error) {
	original, err := json.Marshal(originalNode)
	if err != nil {
		return nil, fmt.Errorf("failed to marshal original node %#v: %v", originalNode, err)
	}
	updated, err := strategicpatch.StrategicMergePatch(original, patch, v1.Node{})
	if err != nil {
		return nil, fmt.Errorf("failed to apply strategic merge patch %q on node %#v: %v",
			patch, originalNode, err)
	}
	updatedNode := &v1.Node{}
	if err := json.Unmarshal(updated, updatedNode); err != nil {
		return nil, fmt.Errorf("failed to unmarshal updated node %q: %v", updated, err)
	}
	return updatedNode, nil
}

func notImplemented(action core.Action) (bool, runtime.Object, error) {
	return true, nil, fmt.Errorf("no reaction implemented for %s", action)
}

func addNotImplatedReaction(kubeClient *fake.Clientset) {
	if kubeClient == nil {
		return
	}

	kubeClient.AddReactor("*", "*", notImplemented)
}

type localCM struct {
	cm.ContainerManager
	allocatableReservation v1.ResourceList
	capacity               v1.ResourceList
}

func (lcm *localCM) GetNodeAllocatableReservation() v1.ResourceList {
	return lcm.allocatableReservation
}

func (lcm *localCM) GetCapacity() v1.ResourceList {
	return lcm.capacity
}

// sortableNodeAddress is a type for sorting []v1.NodeAddress
type sortableNodeAddress []v1.NodeAddress

func (s sortableNodeAddress) Len() int { return len(s) }
func (s sortableNodeAddress) Less(i, j int) bool {
	return (string(s[i].Type) + s[i].Address) < (string(s[j].Type) + s[j].Address)
}
func (s sortableNodeAddress) Swap(i, j int) { s[j], s[i] = s[i], s[j] }

//func TestUpdateNewNodeStatus(t *testing.T) {
//	cases := []struct {
//		desc                string
//		nodeStatusMaxImages int32
//	}{
//		{
//			desc:                "5 image limit",
//			nodeStatusMaxImages: 5,
//		},
//		{
//			desc:                "no image limit",
//			nodeStatusMaxImages: -1,
//		},
//	}
//
//	for _, tc := range cases {
//		t.Run(tc.desc, func(t *testing.T) {
//			// generate one more in inputImageList than we configure the Kubelet to report,
//			// or 5 images if unlimited
//			numTestImages := int(tc.nodeStatusMaxImages) + 1
//			if tc.nodeStatusMaxImages == -1 {
//				numTestImages = 5
//			}
//			inputImageList, expectedImageList := generateTestingImageLists(numTestImages, int(tc.nodeStatusMaxImages))
//			testKubelet := newTestKubeletWithImageList(
//				t, inputImageList, false /* controllerAttachDetachEnabled */, true /*initFakeVolumePlugin*/)
//			defer testKubelet.Cleanup()
//			kubelet := testKubelet.kubelet
//			kubelet.nodeStatusMaxImages = tc.nodeStatusMaxImages
//			testKubelet.kubelet.kubeTPClients = nil // ensure only the heartbeat client is used
//			kubelet.containerManager = &localCM{
//				ContainerManager: cm.NewStubContainerManager(),
//				allocatableReservation: v1.ResourceList{
//					v1.ResourceCPU:              *resource.NewMilliQuantity(200, resource.DecimalSI),
//					v1.ResourceMemory:           *resource.NewQuantity(100e6, resource.BinarySI),
//					v1.ResourceEphemeralStorage: *resource.NewQuantity(2000, resource.BinarySI),
//				},
//				capacity: v1.ResourceList{
//					v1.ResourceCPU:              *resource.NewMilliQuantity(2000, resource.DecimalSI),
//					v1.ResourceMemory:           *resource.NewQuantity(10e9, resource.BinarySI),
//					v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
//				},
//			}
//			// Since this test retroactively overrides the stub container manager,
//			// we have to regenerate default status setters.
//			kubelet.setNodeStatusFuncs = kubelet.defaultNodeStatusFuncs()
//
//			kubeClient := testKubelet.fakeKubeClient
//			existingNode := v1.Node{ObjectMeta: metav1.ObjectMeta{Name: testKubeletHostname}}
//			kubeClient.ReactionChain = fake.NewSimpleClientset(&v1.NodeList{Items: []v1.Node{existingNode}}).ReactionChain
//			machineInfo := &cadvisorapi.MachineInfo{
//				MachineID:      "123",
//				SystemUUID:     "abc",
//				BootID:         "1b3",
//				NumCores:       2,
//				MemoryCapacity: 10e9, // 10G
//			}
//			kubelet.machineInfo = machineInfo
//
//			expectedNode := &v1.Node{
//				ObjectMeta: metav1.ObjectMeta{Name: testKubeletHostname},
//				Spec:       v1.NodeSpec{},
//				Status: v1.NodeStatus{
//					Conditions: []v1.NodeCondition{
//						{
//							Type:               v1.NodeVmRuntimeReady,
//							Status:             v1.ConditionUnknown,
//							LastHeartbeatTime:  metav1.Time{},
//							LastTransitionTime: metav1.Time{},
//						},
//						{
//							Type:               v1.NodeContainerRuntimeReady,
//							Status:             v1.ConditionUnknown,
//							LastHeartbeatTime:  metav1.Time{},
//							LastTransitionTime: metav1.Time{},
//						},
//						{
//							Type:               v1.NodeMemoryPressure,
//							Status:             v1.ConditionFalse,
//							Reason:             "KubeletHasSufficientMemory",
//							Message:            fmt.Sprintf("kubelet has sufficient memory available"),
//							LastHeartbeatTime:  metav1.Time{},
//							LastTransitionTime: metav1.Time{},
//						},
//						{
//							Type:               v1.NodeDiskPressure,
//							Status:             v1.ConditionFalse,
//							Reason:             "KubeletHasNoDiskPressure",
//							Message:            fmt.Sprintf("kubelet has no disk pressure"),
//							LastHeartbeatTime:  metav1.Time{},
//							LastTransitionTime: metav1.Time{},
//						},
//						{
//							Type:               v1.NodePIDPressure,
//							Status:             v1.ConditionFalse,
//							Reason:             "KubeletHasSufficientPID",
//							Message:            fmt.Sprintf("kubelet has sufficient PID available"),
//							LastHeartbeatTime:  metav1.Time{},
//							LastTransitionTime: metav1.Time{},
//						},
//						{
//							Type:               v1.NodeReady,
//							Status:             v1.ConditionTrue,
//							Reason:             "KubeletReady",
//							Message:            fmt.Sprintf("kubelet is posting ready status"),
//							LastHeartbeatTime:  metav1.Time{},
//							LastTransitionTime: metav1.Time{},
//						},
//					},
//					NodeInfo: v1.NodeSystemInfo{
//						MachineID:               "123",
//						SystemUUID:              "abc",
//						BootID:                  "1b3",
//						KernelVersion:           cadvisortest.FakeKernelVersion,
//						OSImage:                 cadvisortest.FakeContainerOsVersion,
//						OperatingSystem:         goruntime.GOOS,
//						Architecture:            goruntime.GOARCH,
//						ContainerRuntimeVersion: "test://1.5.0",
//						KubeletVersion:          version.Get().String(),
//						KubeProxyVersion:        version.Get().String(),
//					},
//					Capacity: v1.ResourceList{
//						v1.ResourceCPU:              *resource.NewMilliQuantity(2000, resource.DecimalSI),
//						v1.ResourceMemory:           *resource.NewQuantity(10e9, resource.BinarySI),
//						v1.ResourcePods:             *resource.NewQuantity(0, resource.DecimalSI),
//						v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
//					},
//					Allocatable: v1.ResourceList{
//						v1.ResourceCPU:              *resource.NewMilliQuantity(1800, resource.DecimalSI),
//						v1.ResourceMemory:           *resource.NewQuantity(9900e6, resource.BinarySI),
//						v1.ResourcePods:             *resource.NewQuantity(0, resource.DecimalSI),
//						v1.ResourceEphemeralStorage: *resource.NewQuantity(3000, resource.BinarySI),
//					},
//					Addresses: []v1.NodeAddress{
//						{Type: v1.NodeInternalIP, Address: "127.0.0.1"},
//						{Type: v1.NodeHostName, Address: testKubeletHostname},
//					},
//					Images: expectedImageList,
//				},
//			}
//
//			kubelet.updateRuntimeUp()
//			assert.NoError(t, kubelet.updateNodeStatus())
//			actions := kubeClient.Actions()
//			require.Len(t, actions, 2)
//			require.True(t, actions[1].Matches("patch", "nodes"))
//			require.Equal(t, actions[1].GetSubresource(), "status")
//
//			updatedNode, err := applyNodeStatusPatch(&existingNode, actions[1].(core.PatchActionImpl).GetPatch())
//			assert.NoError(t, err)
//			for i, cond := range updatedNode.Status.Conditions {
//				assert.False(t, cond.LastHeartbeatTime.IsZero(), "LastHeartbeatTime for %v condition is zero", cond.Type)
//				assert.False(t, cond.LastTransitionTime.IsZero(), "LastTransitionTime for %v condition is zero", cond.Type)
//				updatedNode.Status.Conditions[i].LastHeartbeatTime = metav1.Time{}
//				updatedNode.Status.Conditions[i].LastTransitionTime = metav1.Time{}
//			}
//
//			// Version skew workaround. See: https://github.com/kubernetes/kubernetes/issues/16961
//			assert.Equal(t, v1.NodeReady, updatedNode.Status.Conditions[len(updatedNode.Status.Conditions)-1].Type,
//				"NotReady should be last")
//			assert.Len(t, updatedNode.Status.Images, len(expectedImageList))
//			assert.True(t, apiequality.Semantic.DeepEqual(expectedNode, updatedNode), "%s", diff.ObjectDiff(expectedNode, updatedNode))
//		})
//	}
//}

//func TestUpdateExistingNodeStatus(t *testing.T) {
//	testKubelet := newTestKubelet(t, false /* controllerAttachDetachEnabled */)
//	defer testKubelet.Cleanup()
//	kubelet := testKubelet.kubelet
//	kubelet.nodeStatusMaxImages = 5         // don't truncate the image list that gets constructed by hand for this test
//	testKubelet.kubelet.kubeTPClients = nil // ensure only the heartbeat client is used
//	kubelet.containerManager = &localCM{
//		ContainerManager: cm.NewStubContainerManager(),
//		allocatableReservation: v1.ResourceList{
//			v1.ResourceCPU:    *resource.NewMilliQuantity(200, resource.DecimalSI),
//			v1.ResourceMemory: *resource.NewQuantity(100e6, resource.BinarySI),
//		},
//		capacity: v1.ResourceList{
//			v1.ResourceCPU:              *resource.NewMilliQuantity(2000, resource.DecimalSI),
//			v1.ResourceMemory:           *resource.NewQuantity(20e9, resource.BinarySI),
//			v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
//		},
//	}
//	// Since this test retroactively overrides the stub container manager,
//	// we have to regenerate default status setters.
//	kubelet.setNodeStatusFuncs = kubelet.defaultNodeStatusFuncs()
//
//	kubeClient := testKubelet.fakeKubeClient
//	existingNode := v1.Node{
//		ObjectMeta: metav1.ObjectMeta{Name: testKubeletHostname},
//		Spec:       v1.NodeSpec{},
//		Status: v1.NodeStatus{
//			Conditions: []v1.NodeCondition{
//				{
//					Type:               v1.NodeVmRuntimeReady,
//					Status:             v1.ConditionTrue,
//					LastHeartbeatTime:  metav1.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC),
//					LastTransitionTime: metav1.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC),
//				},
//				{
//					Type:               v1.NodeContainerRuntimeReady,
//					Status:             v1.ConditionFalse,
//					LastHeartbeatTime:  metav1.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC),
//					LastTransitionTime: metav1.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC),
//				},
//				{
//					Type:               v1.NodeMemoryPressure,
//					Status:             v1.ConditionFalse,
//					Reason:             "KubeletHasSufficientMemory",
//					Message:            fmt.Sprintf("kubelet has sufficient memory available"),
//					LastHeartbeatTime:  metav1.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC),
//					LastTransitionTime: metav1.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC),
//				},
//				{
//					Type:               v1.NodeDiskPressure,
//					Status:             v1.ConditionFalse,
//					Reason:             "KubeletHasSufficientDisk",
//					Message:            fmt.Sprintf("kubelet has sufficient disk space available"),
//					LastHeartbeatTime:  metav1.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC),
//					LastTransitionTime: metav1.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC),
//				},
//				{
//					Type:               v1.NodePIDPressure,
//					Status:             v1.ConditionFalse,
//					Reason:             "KubeletHasSufficientPID",
//					Message:            fmt.Sprintf("kubelet has sufficient PID available"),
//					LastHeartbeatTime:  metav1.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC),
//					LastTransitionTime: metav1.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC),
//				},
//				{
//					Type:               v1.NodeReady,
//					Status:             v1.ConditionTrue,
//					Reason:             "KubeletReady",
//					Message:            fmt.Sprintf("kubelet is posting ready status"),
//					LastHeartbeatTime:  metav1.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC),
//					LastTransitionTime: metav1.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC),
//				},
//			},
//			Capacity: v1.ResourceList{
//				v1.ResourceCPU:    *resource.NewMilliQuantity(3000, resource.DecimalSI),
//				v1.ResourceMemory: *resource.NewQuantity(20e9, resource.BinarySI),
//				v1.ResourcePods:   *resource.NewQuantity(0, resource.DecimalSI),
//			},
//			Allocatable: v1.ResourceList{
//				v1.ResourceCPU:    *resource.NewMilliQuantity(2800, resource.DecimalSI),
//				v1.ResourceMemory: *resource.NewQuantity(19900e6, resource.BinarySI),
//				v1.ResourcePods:   *resource.NewQuantity(0, resource.DecimalSI),
//			},
//		},
//	}
//	kubeClient.ReactionChain = fake.NewSimpleClientset(&v1.NodeList{Items: []v1.Node{existingNode}}).ReactionChain
//	machineInfo := &cadvisorapi.MachineInfo{
//		MachineID:      "123",
//		SystemUUID:     "abc",
//		BootID:         "1b3",
//		NumCores:       2,
//		MemoryCapacity: 20e9,
//	}
//	kubelet.machineInfo = machineInfo
//
//	expectedNode := &v1.Node{
//		ObjectMeta: metav1.ObjectMeta{Name: testKubeletHostname},
//		Spec:       v1.NodeSpec{},
//		Status: v1.NodeStatus{
//			Conditions: []v1.NodeCondition{
//				{
//					Type:               v1.NodeVmRuntimeReady,
//					Status:             v1.ConditionTrue,
//					LastHeartbeatTime:  metav1.Time{},
//					LastTransitionTime: metav1.Time{},
//				},
//				{
//					Type:               v1.NodeContainerRuntimeReady,
//					Status:             v1.ConditionFalse,
//					LastHeartbeatTime:  metav1.Time{},
//					LastTransitionTime: metav1.Time{},
//				},
//				{
//					Type:               v1.NodeMemoryPressure,
//					Status:             v1.ConditionFalse,
//					Reason:             "KubeletHasSufficientMemory",
//					Message:            fmt.Sprintf("kubelet has sufficient memory available"),
//					LastHeartbeatTime:  metav1.Time{},
//					LastTransitionTime: metav1.Time{},
//				},
//				{
//					Type:               v1.NodeDiskPressure,
//					Status:             v1.ConditionFalse,
//					Reason:             "KubeletHasSufficientDisk",
//					Message:            fmt.Sprintf("kubelet has sufficient disk space available"),
//					LastHeartbeatTime:  metav1.Time{},
//					LastTransitionTime: metav1.Time{},
//				},
//				{
//					Type:               v1.NodePIDPressure,
//					Status:             v1.ConditionFalse,
//					Reason:             "KubeletHasSufficientPID",
//					Message:            fmt.Sprintf("kubelet has sufficient PID available"),
//					LastHeartbeatTime:  metav1.Time{},
//					LastTransitionTime: metav1.Time{},
//				},
//				{
//					Type:               v1.NodeReady,
//					Status:             v1.ConditionTrue,
//					Reason:             "KubeletReady",
//					Message:            fmt.Sprintf("kubelet is posting ready status"),
//					LastHeartbeatTime:  metav1.Time{}, // placeholder
//					LastTransitionTime: metav1.Time{}, // placeholder
//				},
//			},
//			NodeInfo: v1.NodeSystemInfo{
//				MachineID:               "123",
//				SystemUUID:              "abc",
//				BootID:                  "1b3",
//				KernelVersion:           cadvisortest.FakeKernelVersion,
//				OSImage:                 cadvisortest.FakeContainerOsVersion,
//				OperatingSystem:         goruntime.GOOS,
//				Architecture:            goruntime.GOARCH,
//				ContainerRuntimeVersion: "test://1.5.0",
//				KubeletVersion:          version.Get().String(),
//				KubeProxyVersion:        version.Get().String(),
//			},
//			Capacity: v1.ResourceList{
//				v1.ResourceCPU:              *resource.NewMilliQuantity(2000, resource.DecimalSI),
//				v1.ResourceMemory:           *resource.NewQuantity(20e9, resource.BinarySI),
//				v1.ResourcePods:             *resource.NewQuantity(0, resource.DecimalSI),
//				v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
//			},
//			Allocatable: v1.ResourceList{
//				v1.ResourceCPU:              *resource.NewMilliQuantity(1800, resource.DecimalSI),
//				v1.ResourceMemory:           *resource.NewQuantity(19900e6, resource.BinarySI),
//				v1.ResourcePods:             *resource.NewQuantity(0, resource.DecimalSI),
//				v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
//			},
//			Addresses: []v1.NodeAddress{
//				{Type: v1.NodeInternalIP, Address: "127.0.0.1"},
//				{Type: v1.NodeHostName, Address: testKubeletHostname},
//			},
//			// images will be sorted from max to min in node status.
//			Images: []v1.ContainerImage{
//				{
//					Names:     []string{"k8s.gcr.io:v1", "k8s.gcr.io:v2"},
//					SizeBytes: 123,
//				},
//				{
//					Names:     []string{"k8s.gcr.io:v3", "k8s.gcr.io:v4"},
//					SizeBytes: 456,
//				},
//			},
//		},
//	}
//
//	kubelet.updateRuntimeUp()
//	assert.NoError(t, kubelet.updateNodeStatus())
//
//	actions := kubeClient.Actions()
//	assert.Len(t, actions, 2)
//
//	assert.IsType(t, core.PatchActionImpl{}, actions[1])
//	patchAction := actions[1].(core.PatchActionImpl)
//
//	updatedNode, err := applyNodeStatusPatch(&existingNode, patchAction.GetPatch())
//	require.NoError(t, err)
//
//	for i, cond := range updatedNode.Status.Conditions {
//		old := metav1.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC).Time
//		// Expect LastHearbeat to be updated to Now, while LastTransitionTime to be the same.
//		assert.NotEqual(t, old, cond.LastHeartbeatTime.Rfc3339Copy().UTC(), "LastHeartbeatTime for condition %v", cond.Type)
//		assert.EqualValues(t, old, cond.LastTransitionTime.Rfc3339Copy().UTC(), "LastTransitionTime for condition %v", cond.Type)
//
//		updatedNode.Status.Conditions[i].LastHeartbeatTime = metav1.Time{}
//		updatedNode.Status.Conditions[i].LastTransitionTime = metav1.Time{}
//	}
//
//	// Version skew workaround. See: https://github.com/kubernetes/kubernetes/issues/16961
//	assert.Equal(t, v1.NodeReady, updatedNode.Status.Conditions[len(updatedNode.Status.Conditions)-1].Type,
//		"NodeReady should be the last condition")
//	assert.True(t, apiequality.Semantic.DeepEqual(expectedNode, updatedNode), "%s", diff.ObjectDiff(expectedNode, updatedNode))
//}

//func TestUpdateExistingNodeStatusTimeout(t *testing.T) {
//	attempts := int64(0)
//	failureCallbacks := int64(0)
//
//	// set up a listener that hangs connections
//	ln, err := net.Listen("tcp", "127.0.0.1:0")
//	assert.NoError(t, err)
//	defer ln.Close()
//	go func() {
//		// accept connections and just let them hang
//		for {
//			_, err := ln.Accept()
//			if err != nil {
//				t.Log(err)
//				return
//			}
//			t.Log("accepted connection")
//			atomic.AddInt64(&attempts, 1)
//		}
//	}()
//
//	kubeConfig := &rest.KubeConfig{
//		Host:    "http://" + ln.Addr().String(),
//		QPS:     -1,
//		Timeout: time.Second,
//	}
//	config := rest.NewAggregatedConfig(kubeConfig)
//	assert.NoError(t, err)
//
//	testKubelet := newTestKubelet(t, false /* controllerAttachDetachEnabled */)
//	defer testKubelet.Cleanup()
//	kubelet := testKubelet.kubelet
//	testKubelet.kubelet.kubeTPClients = nil // ensure only the heartbeat client is used
//	kubelet.heartbeatClient, err = clientset.NewForConfig(config)
//
//	f := func() {
//		atomic.AddInt64(&failureCallbacks, 1)
//	}
//	kubelet.onRepeatedHeartbeatFailure = make([]func(), 1)
//	kubelet.onRepeatedHeartbeatFailure[0] = f
//	kubelet.containerManager = &localCM{
//		ContainerManager: cm.NewStubContainerManager(),
//		allocatableReservation: v1.ResourceList{
//			v1.ResourceCPU:    *resource.NewMilliQuantity(200, resource.DecimalSI),
//			v1.ResourceMemory: *resource.NewQuantity(100e6, resource.BinarySI),
//		},
//		capacity: v1.ResourceList{
//			v1.ResourceCPU:    *resource.NewMilliQuantity(2000, resource.DecimalSI),
//			v1.ResourceMemory: *resource.NewQuantity(20e9, resource.BinarySI),
//		},
//	}
//
//	// should return an error, but not hang
//	assert.Error(t, kubelet.updateNodeStatus())
//
//	// should have attempted multiple times
//	if actualAttempts := atomic.LoadInt64(&attempts); actualAttempts < nodeStatusUpdateRetry {
//		t.Errorf("Expected at least %d attempts, got %d", nodeStatusUpdateRetry, actualAttempts)
//	}
//	// should have gotten multiple failure callbacks
//	if actualFailureCallbacks := atomic.LoadInt64(&failureCallbacks); actualFailureCallbacks < (nodeStatusUpdateRetry - 1) {
//		t.Errorf("Expected %d failure callbacks, got %d", (nodeStatusUpdateRetry - 1), actualFailureCallbacks)
//	}
//}

//func TestUpdateNodeStatusWithRuntimeStateError(t *testing.T) {
//	testKubelet := newTestKubelet(t, false /* controllerAttachDetachEnabled */)
//	defer testKubelet.Cleanup()
//	kubelet := testKubelet.kubelet
//	kubelet.nodeStatusMaxImages = 5         // don't truncate the image list that gets constructed by hand for this test
//	testKubelet.kubelet.kubeTPClients = nil // ensure only the heartbeat client is used
//	kubelet.containerManager = &localCM{
//		ContainerManager: cm.NewStubContainerManager(),
//		allocatableReservation: v1.ResourceList{
//			v1.ResourceCPU:              *resource.NewMilliQuantity(200, resource.DecimalSI),
//			v1.ResourceMemory:           *resource.NewQuantity(100e6, resource.BinarySI),
//			v1.ResourceEphemeralStorage: *resource.NewQuantity(10e9, resource.BinarySI),
//		},
//		capacity: v1.ResourceList{
//			v1.ResourceCPU:              *resource.NewMilliQuantity(2000, resource.DecimalSI),
//			v1.ResourceMemory:           *resource.NewQuantity(10e9, resource.BinarySI),
//			v1.ResourceEphemeralStorage: *resource.NewQuantity(20e9, resource.BinarySI),
//		},
//	}
//	// Since this test retroactively overrides the stub container manager,
//	// we have to regenerate default status setters.
//	kubelet.setNodeStatusFuncs = kubelet.defaultNodeStatusFuncs()
//
//	clock := testKubelet.fakeClock
//	kubeClient := testKubelet.fakeKubeClient
//	existingNode := v1.Node{ObjectMeta: metav1.ObjectMeta{Name: testKubeletHostname}}
//	kubeClient.ReactionChain = fake.NewSimpleClientset(&v1.NodeList{Items: []v1.Node{existingNode}}).ReactionChain
//	machineInfo := &cadvisorapi.MachineInfo{
//		MachineID:      "123",
//		SystemUUID:     "abc",
//		BootID:         "1b3",
//		NumCores:       2,
//		MemoryCapacity: 10e9,
//	}
//	kubelet.machineInfo = machineInfo
//
//	expectedNode := &v1.Node{
//		ObjectMeta: metav1.ObjectMeta{Name: testKubeletHostname},
//		Spec:       v1.NodeSpec{},
//		Status: v1.NodeStatus{
//			Conditions: []v1.NodeCondition{
//				{
//					Type:               v1.NodeVmRuntimeReady,
//					Status:             v1.ConditionUnknown,
//					LastHeartbeatTime:  metav1.Time{},
//					LastTransitionTime: metav1.Time{},
//				},
//				{
//					Type:               v1.NodeContainerRuntimeReady,
//					Status:             v1.ConditionUnknown,
//					LastHeartbeatTime:  metav1.Time{},
//					LastTransitionTime: metav1.Time{},
//				},
//				{
//					Type:               v1.NodeMemoryPressure,
//					Status:             v1.ConditionFalse,
//					Reason:             "KubeletHasSufficientMemory",
//					Message:            fmt.Sprintf("kubelet has sufficient memory available"),
//					LastHeartbeatTime:  metav1.Time{},
//					LastTransitionTime: metav1.Time{},
//				},
//				{
//					Type:               v1.NodeDiskPressure,
//					Status:             v1.ConditionFalse,
//					Reason:             "KubeletHasNoDiskPressure",
//					Message:            fmt.Sprintf("kubelet has no disk pressure"),
//					LastHeartbeatTime:  metav1.Time{},
//					LastTransitionTime: metav1.Time{},
//				},
//				{
//					Type:               v1.NodePIDPressure,
//					Status:             v1.ConditionFalse,
//					Reason:             "KubeletHasSufficientPID",
//					Message:            fmt.Sprintf("kubelet has sufficient PID available"),
//					LastHeartbeatTime:  metav1.Time{},
//					LastTransitionTime: metav1.Time{},
//				},
//				{}, //placeholder
//			},
//			NodeInfo: v1.NodeSystemInfo{
//				MachineID:               "123",
//				SystemUUID:              "abc",
//				BootID:                  "1b3",
//				KernelVersion:           cadvisortest.FakeKernelVersion,
//				OSImage:                 cadvisortest.FakeContainerOsVersion,
//				OperatingSystem:         goruntime.GOOS,
//				Architecture:            goruntime.GOARCH,
//				ContainerRuntimeVersion: "test://1.5.0",
//				KubeletVersion:          version.Get().String(),
//				KubeProxyVersion:        version.Get().String(),
//			},
//			Capacity: v1.ResourceList{
//				v1.ResourceCPU:              *resource.NewMilliQuantity(2000, resource.DecimalSI),
//				v1.ResourceMemory:           *resource.NewQuantity(10e9, resource.BinarySI),
//				v1.ResourcePods:             *resource.NewQuantity(0, resource.DecimalSI),
//				v1.ResourceEphemeralStorage: *resource.NewQuantity(20e9, resource.BinarySI),
//			},
//			Allocatable: v1.ResourceList{
//				v1.ResourceCPU:              *resource.NewMilliQuantity(1800, resource.DecimalSI),
//				v1.ResourceMemory:           *resource.NewQuantity(9900e6, resource.BinarySI),
//				v1.ResourcePods:             *resource.NewQuantity(0, resource.DecimalSI),
//				v1.ResourceEphemeralStorage: *resource.NewQuantity(10e9, resource.BinarySI),
//			},
//			Addresses: []v1.NodeAddress{
//				{Type: v1.NodeInternalIP, Address: "127.0.0.1"},
//				{Type: v1.NodeHostName, Address: testKubeletHostname},
//			},
//			Images: []v1.ContainerImage{
//				{
//					Names:     []string{"k8s.gcr.io:v1", "k8s.gcr.io:v2"},
//					SizeBytes: 123,
//				},
//				{
//					Names:     []string{"k8s.gcr.io:v3", "k8s.gcr.io:v4"},
//					SizeBytes: 456,
//				},
//			},
//		},
//	}
//
//	checkNodeStatus := func(status v1.ConditionStatus, reason string) {
//		kubeClient.ClearActions()
//		assert.NoError(t, kubelet.updateNodeStatus())
//		actions := kubeClient.Actions()
//		actionNum := len(actions)
//		require.True(t, actionNum == 1 || actionNum == 2) // get can be optional
//		require.True(t, actions[actionNum-1].Matches("patch", "nodes"))
//		require.Equal(t, actions[actionNum-1].GetSubresource(), "status")
//
//		updatedNode, err := kubeClient.CoreV1().Nodes().Get(testKubeletHostname, metav1.GetOptions{})
//		require.NoError(t, err, "can't apply node status patch")
//
//		for i, cond := range updatedNode.Status.Conditions {
//			assert.False(t, cond.LastHeartbeatTime.IsZero(), "LastHeartbeatTime for %v condition is zero", cond.Type)
//			assert.False(t, cond.LastTransitionTime.IsZero(), "LastTransitionTime for %v condition  is zero", cond.Type)
//			updatedNode.Status.Conditions[i].LastHeartbeatTime = metav1.Time{}
//			updatedNode.Status.Conditions[i].LastTransitionTime = metav1.Time{}
//		}
//
//		// Version skew workaround. See: https://github.com/kubernetes/kubernetes/issues/16961
//		lastIndex := len(updatedNode.Status.Conditions) - 1
//		assert.Equal(t, v1.NodeReady, updatedNode.Status.Conditions[lastIndex].Type, "NodeReady should be the last condition")
//		assert.NotEmpty(t, updatedNode.Status.Conditions[lastIndex].Message)
//
//		updatedNode.Status.Conditions[lastIndex].Message = ""
//		expectedNode.Status.Conditions[lastIndex] = v1.NodeCondition{
//			Type:               v1.NodeReady,
//			Status:             status,
//			Reason:             reason,
//			LastHeartbeatTime:  metav1.Time{},
//			LastTransitionTime: metav1.Time{},
//		}
//		assert.True(t, apiequality.Semantic.DeepEqual(expectedNode, updatedNode), "%s", diff.ObjectDiff(expectedNode, updatedNode))
//	}
//
//	// overwrite the fakeRuntimeService so the status can be manipulated in the test below
//	f := critest.NewFakeRuntimeService()
//	f.FakeStatus = &runtimeapi.RuntimeStatus{
//		Conditions: []*runtimeapi.RuntimeCondition{
//			{Type: "RuntimeReady", Status: true},
//			{Type: "NetworkReady", Status: true},
//		},
//	}
//	kubelet.runtimeManager = runtimeregistry.NewFakeRuntimeManager(f, nil)
//
//	// TODO(random-liu): Refactor the unit test to be table driven test.
//	// Should report kubelet not ready if the runtime check is out of date
//	clock.SetTime(time.Now().Add(-maxWaitForContainerRuntime))
//	kubelet.updateRuntimeUp()
//	checkNodeStatus(v1.ConditionFalse, "KubeletNotReady")
//
//	// Should report kubelet ready if the runtime check is updated
//	clock.SetTime(time.Now())
//	kubelet.updateRuntimeUp()
//	checkNodeStatus(v1.ConditionTrue, "KubeletReady")
//
//	// Should report kubelet not ready if the runtime check is out of date
//	clock.SetTime(time.Now().Add(-maxWaitForContainerRuntime))
//	kubelet.updateRuntimeUp()
//	checkNodeStatus(v1.ConditionFalse, "KubeletNotReady")
//
//	// Error cases for runtime readiness
//	// Should report kubelet not ready if the runtime check failed
//	//
//	// Should report node not ready if runtime status is empty.
//	f.FakeStatus = &runtimeapi.RuntimeStatus{}
//	clock.SetTime(time.Now())
//	kubelet.updateRuntimeUp()
//	checkNodeStatus(v1.ConditionFalse, "KubeletNotReady")
//
//	//Should report node not ready if runtime status is nil.
//	f.FakeStatus = nil
//	clock.SetTime(time.Now())
//	kubelet.updateRuntimeUp()
//	checkNodeStatus(v1.ConditionFalse, "KubeletNotReady")
//
//	// Should report node not ready if RuntimeReady is false.
//	f.FakeStatus = &runtimeapi.RuntimeStatus{
//		Conditions: []*runtimeapi.RuntimeCondition{
//			{Type: "RuntimeReady", Status: false},
//			{Type: "NetworkReady", Status: true},
//		},
//	}
//	clock.SetTime(time.Now())
//	kubelet.updateRuntimeUp()
//	checkNodeStatus(v1.ConditionFalse, "KubeletNotReady")
//
//	// Should report node ready if RuntimeReady is true.
//	f.FakeStatus = &runtimeapi.RuntimeStatus{
//		Conditions: []*runtimeapi.RuntimeCondition{
//			{Type: "RuntimeReady", Status: true},
//			{Type: "NetworkReady", Status: true},
//		},
//	}
//	clock.SetTime(time.Now())
//	kubelet.updateRuntimeUp()
//	checkNodeStatus(v1.ConditionTrue, "KubeletReady")
//
//	// Should report node not ready if NetworkReady is false.
//	f.FakeStatus = &runtimeapi.RuntimeStatus{
//		Conditions: []*runtimeapi.RuntimeCondition{
//			{Type: "RuntimeReady", Status: true},
//			{Type: "NetworkReady", Status: false},
//		},
//	}
//	clock.SetTime(time.Now())
//	kubelet.updateRuntimeUp()
//	checkNodeStatus(v1.ConditionFalse, "KubeletNotReady")
//}

//func TestUpdateNodeStatusError(t *testing.T) {
//	testKubelet := newTestKubelet(t, false /* controllerAttachDetachEnabled */)
//	defer testKubelet.Cleanup()
//	kubelet := testKubelet.kubelet
//	testKubelet.kubelet.kubeTPClients = nil // ensure only the heartbeat client is used
//	// No matching node for the kubelet
//	testKubelet.fakeKubeClient.ReactionChain = fake.NewSimpleClientset(&v1.NodeList{Items: []v1.Node{}}).ReactionChain
//	assert.Error(t, kubelet.updateNodeStatus())
//	assert.Len(t, testKubelet.fakeKubeClient.Actions(), nodeStatusUpdateRetry)
//}

//func TestUpdateNodeStatusWithLease(t *testing.T) {
//	defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.NodeLease, true)()
//
//	testKubelet := newTestKubelet(t, false /* controllerAttachDetachEnabled */)
//	defer testKubelet.Cleanup()
//	clock := testKubelet.fakeClock
//	kubelet := testKubelet.kubelet
//	kubelet.nodeStatusMaxImages = 5         // don't truncate the image list that gets constructed by hand for this test
//	testKubelet.kubelet.kubeTPClients = nil // ensure only the heartbeat client is used
//	kubelet.containerManager = &localCM{
//		ContainerManager: cm.NewStubContainerManager(),
//		allocatableReservation: v1.ResourceList{
//			v1.ResourceCPU:    *resource.NewMilliQuantity(200, resource.DecimalSI),
//			v1.ResourceMemory: *resource.NewQuantity(100e6, resource.BinarySI),
//		},
//		capacity: v1.ResourceList{
//			v1.ResourceCPU:              *resource.NewMilliQuantity(2000, resource.DecimalSI),
//			v1.ResourceMemory:           *resource.NewQuantity(20e9, resource.BinarySI),
//			v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
//		},
//	}
//	// Since this test retroactively overrides the stub container manager,
//	// we have to regenerate default status setters.
//	kubelet.setNodeStatusFuncs = kubelet.defaultNodeStatusFuncs()
//	kubelet.nodeStatusReportFrequency = time.Minute
//
//	kubeClient := testKubelet.fakeKubeClient
//	existingNode := &v1.Node{ObjectMeta: metav1.ObjectMeta{Name: testKubeletHostname}}
//	kubeClient.ReactionChain = fake.NewSimpleClientset(&v1.NodeList{Items: []v1.Node{*existingNode}}).ReactionChain
//	machineInfo := &cadvisorapi.MachineInfo{
//		MachineID:      "123",
//		SystemUUID:     "abc",
//		BootID:         "1b3",
//		NumCores:       2,
//		MemoryCapacity: 20e9,
//	}
//	kubelet.machineInfo = machineInfo
//
//	now := metav1.NewTime(clock.Now()).Rfc3339Copy()
//	expectedNode := &v1.Node{
//		ObjectMeta: metav1.ObjectMeta{Name: testKubeletHostname},
//		Spec:       v1.NodeSpec{},
//		Status: v1.NodeStatus{
//			Conditions: []v1.NodeCondition{
//				{
//					Type:               v1.NodeVmRuntimeReady,
//					Status:             v1.ConditionUnknown,
//					LastHeartbeatTime:  now,
//					LastTransitionTime: now,
//				},
//				{
//					Type:               v1.NodeContainerRuntimeReady,
//					Status:             v1.ConditionUnknown,
//					LastHeartbeatTime:  now,
//					LastTransitionTime: now,
//				},
//				{
//					Type:               v1.NodeMemoryPressure,
//					Status:             v1.ConditionFalse,
//					Reason:             "KubeletHasSufficientMemory",
//					Message:            fmt.Sprintf("kubelet has sufficient memory available"),
//					LastHeartbeatTime:  now,
//					LastTransitionTime: now,
//				},
//				{
//					Type:               v1.NodeDiskPressure,
//					Status:             v1.ConditionFalse,
//					Reason:             "KubeletHasNoDiskPressure",
//					Message:            fmt.Sprintf("kubelet has no disk pressure"),
//					LastHeartbeatTime:  now,
//					LastTransitionTime: now,
//				},
//				{
//					Type:               v1.NodePIDPressure,
//					Status:             v1.ConditionFalse,
//					Reason:             "KubeletHasSufficientPID",
//					Message:            fmt.Sprintf("kubelet has sufficient PID available"),
//					LastHeartbeatTime:  now,
//					LastTransitionTime: now,
//				},
//				{
//					Type:               v1.NodeReady,
//					Status:             v1.ConditionTrue,
//					Reason:             "KubeletReady",
//					Message:            fmt.Sprintf("kubelet is posting ready status"),
//					LastHeartbeatTime:  now,
//					LastTransitionTime: now,
//				},
//			},
//			NodeInfo: v1.NodeSystemInfo{
//				MachineID:               "123",
//				SystemUUID:              "abc",
//				BootID:                  "1b3",
//				KernelVersion:           cadvisortest.FakeKernelVersion,
//				OSImage:                 cadvisortest.FakeContainerOsVersion,
//				OperatingSystem:         goruntime.GOOS,
//				Architecture:            goruntime.GOARCH,
//				ContainerRuntimeVersion: "test://1.5.0",
//				KubeletVersion:          version.Get().String(),
//				KubeProxyVersion:        version.Get().String(),
//			},
//			Capacity: v1.ResourceList{
//				v1.ResourceCPU:              *resource.NewMilliQuantity(2000, resource.DecimalSI),
//				v1.ResourceMemory:           *resource.NewQuantity(20e9, resource.BinarySI),
//				v1.ResourcePods:             *resource.NewQuantity(0, resource.DecimalSI),
//				v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
//			},
//			Allocatable: v1.ResourceList{
//				v1.ResourceCPU:              *resource.NewMilliQuantity(1800, resource.DecimalSI),
//				v1.ResourceMemory:           *resource.NewQuantity(19900e6, resource.BinarySI),
//				v1.ResourcePods:             *resource.NewQuantity(0, resource.DecimalSI),
//				v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
//			},
//			Addresses: []v1.NodeAddress{
//				{Type: v1.NodeInternalIP, Address: "127.0.0.1"},
//				{Type: v1.NodeHostName, Address: testKubeletHostname},
//			},
//			// images will be sorted from max to min in node status.
//			Images: []v1.ContainerImage{
//				{
//					Names:     []string{"k8s.gcr.io:v1", "k8s.gcr.io:v2"},
//					SizeBytes: 123,
//				},
//				{
//					Names:     []string{"k8s.gcr.io:v3", "k8s.gcr.io:v4"},
//					SizeBytes: 456,
//				},
//			},
//		},
//	}
//
//	// Update node status when node status is created.
//	// Report node status.
//	kubelet.updateRuntimeUp()
//	assert.NoError(t, kubelet.updateNodeStatus())
//
//	actions := kubeClient.Actions()
//	assert.Len(t, actions, 2)
//	assert.IsType(t, core.GetActionImpl{}, actions[0])
//	assert.IsType(t, core.PatchActionImpl{}, actions[1])
//	patchAction := actions[1].(core.PatchActionImpl)
//
//	updatedNode, err := applyNodeStatusPatch(existingNode, patchAction.GetPatch())
//	require.NoError(t, err)
//	for _, cond := range updatedNode.Status.Conditions {
//		cond.LastHeartbeatTime = cond.LastHeartbeatTime.Rfc3339Copy()
//		cond.LastTransitionTime = cond.LastTransitionTime.Rfc3339Copy()
//	}
//	assert.True(t, apiequality.Semantic.DeepEqual(expectedNode, updatedNode), "%s", diff.ObjectDiff(expectedNode, updatedNode))
//
//	// Version skew workaround. See: https://github.com/kubernetes/kubernetes/issues/16961
//	assert.Equal(t, v1.NodeReady, updatedNode.Status.Conditions[len(updatedNode.Status.Conditions)-1].Type,
//		"NodeReady should be the last condition")
//
//	// Update node status again when nothing is changed (except heartbeat time).
//	// Report node status if it has exceeded the duration of nodeStatusReportFrequency.
//	clock.Step(time.Minute)
//	assert.NoError(t, kubelet.updateNodeStatus())
//
//	// 1 more action (There were 2 actions before).
//	actions = kubeClient.Actions()
//	assert.Len(t, actions, 3)
//	assert.IsType(t, core.GetActionImpl{}, actions[0])
//	assert.IsType(t, core.PatchActionImpl{}, actions[1])
//	assert.IsType(t, core.PatchActionImpl{}, actions[2])
//	patchAction = actions[2].(core.PatchActionImpl)
//
//	updatedNode, err = applyNodeStatusPatch(updatedNode, patchAction.GetPatch())
//	require.NoError(t, err)
//	for _, cond := range updatedNode.Status.Conditions {
//		cond.LastHeartbeatTime = cond.LastHeartbeatTime.Rfc3339Copy()
//		cond.LastTransitionTime = cond.LastTransitionTime.Rfc3339Copy()
//	}
//
//	// Expect LastHearbeat updated, other things unchanged.
//	for i, cond := range expectedNode.Status.Conditions {
//		expectedNode.Status.Conditions[i].LastHeartbeatTime = metav1.NewTime(cond.LastHeartbeatTime.Time.Add(time.Minute)).Rfc3339Copy()
//	}
//	assert.True(t, apiequality.Semantic.DeepEqual(expectedNode, updatedNode), "%s", diff.ObjectDiff(expectedNode, updatedNode))
//
//	// Update node status again when nothing is changed (except heartbeat time).
//	// Do not report node status if it is within the duration of nodeStatusReportFrequency.
//	clock.Step(10 * time.Second)
//	assert.NoError(t, kubelet.updateNodeStatus())
//
//	// Only 0 more action (There were 3 actions before).
//	actions = kubeClient.Actions()
//	assert.Len(t, actions, 3)
//	assert.IsType(t, core.GetActionImpl{}, actions[0])
//	assert.IsType(t, core.PatchActionImpl{}, actions[1])
//	assert.IsType(t, core.PatchActionImpl{}, actions[2])
//
//	// Update node status again when something is changed.
//	// Report node status even if it is still within the duration of nodeStatusReportFrequency.
//	clock.Step(10 * time.Second)
//	var newMemoryCapacity int64 = 40e9
//	kubelet.machineInfo.MemoryCapacity = uint64(newMemoryCapacity)
//	assert.NoError(t, kubelet.updateNodeStatus())
//
//	// 1 more action (There were 3 actions before).
//	actions = kubeClient.Actions()
//	assert.Len(t, actions, 4)
//	assert.IsType(t, core.GetActionImpl{}, actions[0])
//	assert.IsType(t, core.PatchActionImpl{}, actions[1])
//	assert.IsType(t, core.PatchActionImpl{}, actions[2])
//	assert.IsType(t, core.PatchActionImpl{}, actions[3])
//	patchAction = actions[3].(core.PatchActionImpl)
//
//	updatedNode, err = applyNodeStatusPatch(updatedNode, patchAction.GetPatch())
//	require.NoError(t, err)
//	memCapacity, _ := updatedNode.Status.Capacity[v1.ResourceMemory]
//	updatedMemoryCapacity, _ := (&memCapacity).AsInt64()
//	assert.Equal(t, newMemoryCapacity, updatedMemoryCapacity, "Memory capacity")
//
//	now = metav1.NewTime(clock.Now()).Rfc3339Copy()
//	for _, cond := range updatedNode.Status.Conditions {
//		// Expect LastHearbeat updated, while LastTransitionTime unchanged.
//		assert.Equal(t, now, cond.LastHeartbeatTime.Rfc3339Copy(),
//			"LastHeartbeatTime for condition %v", cond.Type)
//		assert.Equal(t, now, metav1.NewTime(cond.LastTransitionTime.Time.Add(time.Minute+20*time.Second)).Rfc3339Copy(),
//			"LastTransitionTime for condition %v", cond.Type)
//	}
//
//	// Update node status when changing pod CIDR.
//	// Report node status if it is still within the duration of nodeStatusReportFrequency.
//	clock.Step(time.Minute)
//	assert.Equal(t, "", kubelet.runtimeState.podCIDR(), "Pod CIDR should be empty")
//	podCIDR := "10.0.0.0/24"
//	updatedNode.Spec.PodCIDR = podCIDR
//
//	fakeClient := &fake.Clientset{}
//	patchTimes := 0
//	fakeClient.AddReactor("patch", "nodes", func(action core.Action) (bool, runtime.Object, error) {
//		if patchTimes == 0 {
//			patchTimes++
//			return true, nil, apierrors.NewResourceExpired("Resource was updated")
//		} else {
//			patchTimes++
//			return true, updatedNode, nil
//		}
//	})
//	fakeClient.AddReactor("get", "nodes", func(action core.Action) (bool, runtime.Object, error) {
//		return true, updatedNode, nil
//	})
//	kubeClient.ReactionChain = fakeClient.ReactionChain
//	assert.NoError(t, kubelet.updateNodeStatus())
//	assert.Equal(t, podCIDR, kubelet.runtimeState.podCIDR(), "Pod CIDR should be updated now")
//	// 3 more action (There were 4 actions before).
//	actions = kubeClient.Actions()
//	assert.Len(t, actions, 7)
//	assert.IsType(t, core.GetActionImpl{}, actions[0])
//	assert.IsType(t, core.PatchActionImpl{}, actions[1])
//	assert.IsType(t, core.PatchActionImpl{}, actions[2])
//	assert.IsType(t, core.PatchActionImpl{}, actions[3])
//	assert.IsType(t, core.PatchActionImpl{}, actions[4])
//	assert.IsType(t, core.GetActionImpl{}, actions[5])
//	assert.IsType(t, core.PatchActionImpl{}, actions[6])
//	patchAction = actions[6].(core.PatchActionImpl)
//
//	// Update node status when keeping the pod CIDR.
//	// Do not report node status if it is within the duration of nodeStatusReportFrequency.
//	kubeClient.ReactionChain = fake.NewSimpleClientset(&v1.NodeList{Items: []v1.Node{*updatedNode}}).ReactionChain
//	clock.Step(10 * time.Second)
//	assert.Equal(t, podCIDR, kubelet.runtimeState.podCIDR(), "Pod CIDR should already be updated")
//	assert.NoError(t, kubelet.updateNodeStatus())
//	// No more action (There were 7 actions before).
//	actions = kubeClient.Actions()
//	assert.Len(t, actions, 7)
//	patchAction = actions[6].(core.PatchActionImpl)
//}

//func TestUpdateNodeStatusAndVolumesInUseWithoutNodeLease(t *testing.T) {
//	defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.NodeLease, false)()
//
//	cases := []struct {
//		desc                  string
//		existingVolumes       []v1.UniqueVolumeName // volumes to initially populate volumeManager
//		existingNode          *v1.Node              // existing node object
//		expectedNode          *v1.Node              // new node object after patch
//		expectedReportedInUse []v1.UniqueVolumeName // expected volumes reported in use in volumeManager
//	}{
//		{
//			desc:         "no volumes and no update",
//			existingNode: &v1.Node{ObjectMeta: metav1.ObjectMeta{Name: testKubeletHostname}},
//			expectedNode: &v1.Node{ObjectMeta: metav1.ObjectMeta{Name: testKubeletHostname}},
//		},
//		{
//			desc:            "volumes inuse on node and volumeManager",
//			existingVolumes: []v1.UniqueVolumeName{"vol1"},
//			existingNode: &v1.Node{
//				ObjectMeta: metav1.ObjectMeta{Name: testKubeletHostname},
//				Status: v1.NodeStatus{
//					VolumesInUse: []v1.UniqueVolumeName{"vol1"},
//				},
//			},
//			expectedNode: &v1.Node{
//				ObjectMeta: metav1.ObjectMeta{Name: testKubeletHostname},
//				Status: v1.NodeStatus{
//					VolumesInUse: []v1.UniqueVolumeName{"vol1"},
//				},
//			},
//			expectedReportedInUse: []v1.UniqueVolumeName{"vol1"},
//		},
//		{
//			desc: "volumes inuse on node but not in volumeManager",
//			existingNode: &v1.Node{
//				ObjectMeta: metav1.ObjectMeta{Name: testKubeletHostname},
//				Status: v1.NodeStatus{
//					VolumesInUse: []v1.UniqueVolumeName{"vol1"},
//				},
//			},
//			expectedNode: &v1.Node{ObjectMeta: metav1.ObjectMeta{Name: testKubeletHostname}},
//		},
//		{
//			desc:            "volumes inuse in volumeManager but not on node",
//			existingVolumes: []v1.UniqueVolumeName{"vol1"},
//			existingNode:    &v1.Node{ObjectMeta: metav1.ObjectMeta{Name: testKubeletHostname}},
//			expectedNode: &v1.Node{
//				ObjectMeta: metav1.ObjectMeta{Name: testKubeletHostname},
//				Status: v1.NodeStatus{
//					VolumesInUse: []v1.UniqueVolumeName{"vol1"},
//				},
//			},
//			expectedReportedInUse: []v1.UniqueVolumeName{"vol1"},
//		},
//	}
//
//	for _, tc := range cases {
//		t.Run(tc.desc, func(t *testing.T) {
//			// Setup
//			testKubelet := newTestKubelet(t, false /* controllerAttachDetachEnabled */)
//			defer testKubelet.Cleanup()
//
//			kubelet := testKubelet.kubelet
//			testKubelet.kubelet.kubeTPClients = nil // ensure only the heartbeat client is used
//			kubelet.containerManager = &localCM{ContainerManager: cm.NewStubContainerManager()}
//			kubelet.lastStatusReportTime = kubelet.clock.Now()
//			kubelet.nodeStatusReportFrequency = time.Hour
//			kubelet.machineInfo = &cadvisorapi.MachineInfo{}
//
//			// override test volumeManager
//			fakeVolumeManager := kubeletvolume.NewFakeVolumeManager(tc.existingVolumes)
//			kubelet.volumeManager = fakeVolumeManager
//
//			// Only test VolumesInUse setter
//			kubelet.setNodeStatusFuncs = []func(*v1.Node) error{
//				nodestatus.VolumesInUse(kubelet.volumeManager.ReconcilerStatesHasBeenSynced,
//					kubelet.volumeManager.GetVolumesInUse),
//			}
//
//			kubeClient := testKubelet.fakeKubeClient
//			kubeClient.ReactionChain = fake.NewSimpleClientset(&v1.NodeList{Items: []v1.Node{*tc.existingNode}}).ReactionChain
//
//			// Execute
//			assert.NoError(t, kubelet.updateNodeStatus())
//
//			// Validate
//			actions := kubeClient.Actions()
//			if tc.expectedNode != nil {
//				assert.Len(t, actions, 2)
//				assert.IsType(t, core.GetActionImpl{}, actions[0])
//				assert.IsType(t, core.PatchActionImpl{}, actions[1])
//				patchAction := actions[1].(core.PatchActionImpl)
//
//				updatedNode, err := applyNodeStatusPatch(tc.existingNode, patchAction.GetPatch())
//				require.NoError(t, err)
//				assert.True(t, apiequality.Semantic.DeepEqual(tc.expectedNode, updatedNode), "%s", diff.ObjectDiff(tc.expectedNode, updatedNode))
//			} else {
//				assert.Len(t, actions, 1)
//				assert.IsType(t, core.GetActionImpl{}, actions[0])
//			}
//
//			reportedInUse := fakeVolumeManager.GetVolumesReportedInUse()
//			assert.True(t, apiequality.Semantic.DeepEqual(tc.expectedReportedInUse, reportedInUse), "%s", diff.ObjectDiff(tc.expectedReportedInUse, reportedInUse))
//		})
//	}
//}

//func TestUpdateNodeStatusAndVolumesInUseWithNodeLease(t *testing.T) {
//	defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.NodeLease, true)()
//
//	cases := []struct {
//		desc                  string
//		existingVolumes       []v1.UniqueVolumeName // volumes to initially populate volumeManager
//		existingNode          *v1.Node              // existing node object
//		expectedNode          *v1.Node              // new node object after patch
//		expectedReportedInUse []v1.UniqueVolumeName // expected volumes reported in use in volumeManager
//	}{
//		{
//			desc:         "no volumes and no update",
//			existingNode: &v1.Node{ObjectMeta: metav1.ObjectMeta{Name: testKubeletHostname}},
//		},
//		{
//			desc:            "volumes inuse on node and volumeManager",
//			existingVolumes: []v1.UniqueVolumeName{"vol1"},
//			existingNode: &v1.Node{
//				ObjectMeta: metav1.ObjectMeta{Name: testKubeletHostname},
//				Status: v1.NodeStatus{
//					VolumesInUse: []v1.UniqueVolumeName{"vol1"},
//				},
//			},
//			expectedReportedInUse: []v1.UniqueVolumeName{"vol1"},
//		},
//		{
//			desc: "volumes inuse on node but not in volumeManager",
//			existingNode: &v1.Node{
//				ObjectMeta: metav1.ObjectMeta{Name: testKubeletHostname},
//				Status: v1.NodeStatus{
//					VolumesInUse: []v1.UniqueVolumeName{"vol1"},
//				},
//			},
//			expectedNode: &v1.Node{ObjectMeta: metav1.ObjectMeta{Name: testKubeletHostname}},
//		},
//		{
//			desc:            "volumes inuse in volumeManager but not on node",
//			existingVolumes: []v1.UniqueVolumeName{"vol1"},
//			existingNode:    &v1.Node{ObjectMeta: metav1.ObjectMeta{Name: testKubeletHostname}},
//			expectedNode: &v1.Node{
//				ObjectMeta: metav1.ObjectMeta{Name: testKubeletHostname},
//				Status: v1.NodeStatus{
//					VolumesInUse: []v1.UniqueVolumeName{"vol1"},
//				},
//			},
//			expectedReportedInUse: []v1.UniqueVolumeName{"vol1"},
//		},
//	}
//
//	for _, tc := range cases {
//		t.Run(tc.desc, func(t *testing.T) {
//			// Setup
//			testKubelet := newTestKubelet(t, false /* controllerAttachDetachEnabled */)
//			defer testKubelet.Cleanup()
//
//			kubelet := testKubelet.kubelet
//			testKubelet.kubelet.kubeTPClients = nil // ensure only the heartbeat client is used
//			kubelet.containerManager = &localCM{ContainerManager: cm.NewStubContainerManager()}
//			kubelet.lastStatusReportTime = kubelet.clock.Now()
//			kubelet.nodeStatusReportFrequency = time.Hour
//			kubelet.machineInfo = &cadvisorapi.MachineInfo{}
//
//			// override test volumeManager
//			fakeVolumeManager := kubeletvolume.NewFakeVolumeManager(tc.existingVolumes)
//			kubelet.volumeManager = fakeVolumeManager
//
//			// Only test VolumesInUse setter
//			kubelet.setNodeStatusFuncs = []func(*v1.Node) error{
//				nodestatus.VolumesInUse(kubelet.volumeManager.ReconcilerStatesHasBeenSynced,
//					kubelet.volumeManager.GetVolumesInUse),
//			}
//
//			kubeClient := testKubelet.fakeKubeClient
//			kubeClient.ReactionChain = fake.NewSimpleClientset(&v1.NodeList{Items: []v1.Node{*tc.existingNode}}).ReactionChain
//
//			// Execute
//			assert.NoError(t, kubelet.updateNodeStatus())
//
//			// Validate
//			actions := kubeClient.Actions()
//			if tc.expectedNode != nil {
//				assert.Len(t, actions, 2)
//				assert.IsType(t, core.GetActionImpl{}, actions[0])
//				assert.IsType(t, core.PatchActionImpl{}, actions[1])
//				patchAction := actions[1].(core.PatchActionImpl)
//
//				updatedNode, err := applyNodeStatusPatch(tc.existingNode, patchAction.GetPatch())
//				require.NoError(t, err)
//				assert.True(t, apiequality.Semantic.DeepEqual(tc.expectedNode, updatedNode), "%s", diff.ObjectDiff(tc.expectedNode, updatedNode))
//			} else {
//				assert.Len(t, actions, 1)
//				assert.IsType(t, core.GetActionImpl{}, actions[0])
//			}
//
//			reportedInUse := fakeVolumeManager.GetVolumesReportedInUse()
//			assert.True(t, apiequality.Semantic.DeepEqual(tc.expectedReportedInUse, reportedInUse), "%s", diff.ObjectDiff(tc.expectedReportedInUse, reportedInUse))
//		})
//	}
//}

//func TestRegisterWithApiServer(t *testing.T) {
//	testKubelet := newTestKubelet(t, false /* controllerAttachDetachEnabled */)
//	defer testKubelet.Cleanup()
//	kubelet := testKubelet.kubelet
//	kubeClient := testKubelet.fakeKubeClient
//	kubeClient.AddReactor("create", "nodes", func(action core.Action) (bool, runtime.Object, error) {
//		// Return an error on create.
//		return true, &v1.Node{}, &apierrors.StatusError{
//			ErrStatus: metav1.Status{Reason: metav1.StatusReasonAlreadyExists},
//		}
//	})
//	kubeClient.AddReactor("get", "nodes", func(action core.Action) (bool, runtime.Object, error) {
//		// Return an existing (matching) node on get.
//		return true, &v1.Node{
//			ObjectMeta: metav1.ObjectMeta{
//				Name: testKubeletHostname,
//				Labels: map[string]string{
//					v1.LabelHostname:      testKubeletHostname,
//					v1.LabelOSStable:      goruntime.GOOS,
//					v1.LabelArchStable:    goruntime.GOARCH,
//					kubeletapis.LabelOS:   goruntime.GOOS,
//					kubeletapis.LabelArch: goruntime.GOARCH,
//				},
//			},
//		}, nil
//	})
//
//	addNotImplatedReaction(kubeClient)
//
//	machineInfo := &cadvisorapi.MachineInfo{
//		MachineID:      "123",
//		SystemUUID:     "abc",
//		BootID:         "1b3",
//		NumCores:       2,
//		MemoryCapacity: 1024,
//	}
//	kubelet.machineInfo = machineInfo
//
//	done := make(chan struct{})
//	go func() {
//		kubelet.registerWithAPIServer()
//		done <- struct{}{}
//	}()
//	select {
//	case <-time.After(wait.ForeverTestTimeout):
//		assert.Fail(t, "timed out waiting for registration")
//	case <-done:
//		return
//	}
//}

//func TestTryRegisterWithApiServer(t *testing.T) {
//	alreadyExists := &apierrors.StatusError{
//		ErrStatus: metav1.Status{Reason: metav1.StatusReasonAlreadyExists},
//	}
//
//	conflict := &apierrors.StatusError{
//		ErrStatus: metav1.Status{Reason: metav1.StatusReasonConflict},
//	}
//
//	newNode := func(cmad bool) *v1.Node {
//		node := &v1.Node{
//			ObjectMeta: metav1.ObjectMeta{
//				Labels: map[string]string{
//					v1.LabelHostname:      testKubeletHostname,
//					v1.LabelOSStable:      goruntime.GOOS,
//					v1.LabelArchStable:    goruntime.GOARCH,
//					kubeletapis.LabelOS:   goruntime.GOOS,
//					kubeletapis.LabelArch: goruntime.GOARCH,
//				},
//			},
//		}
//
//		if cmad {
//			node.Annotations = make(map[string]string)
//			node.Annotations[util.ControllerManagedAttachAnnotation] = "true"
//		}
//
//		return node
//	}
//
//	cases := []struct {
//		name            string
//		newNode         *v1.Node
//		existingNode    *v1.Node
//		createError     error
//		getError        error
//		patchError      error
//		deleteError     error
//		expectedResult  bool
//		expectedActions int
//		testSavedNode   bool
//		savedNodeIndex  int
//		savedNodeCMAD   bool
//	}{
//		{
//			name:            "success case - new node",
//			newNode:         &v1.Node{},
//			expectedResult:  true,
//			expectedActions: 1,
//		},
//		{
//			name:            "success case - existing node - no change in CMAD",
//			newNode:         newNode(true),
//			createError:     alreadyExists,
//			existingNode:    newNode(true),
//			expectedResult:  true,
//			expectedActions: 2,
//		},
//		{
//			name:            "success case - existing node - CMAD disabled",
//			newNode:         newNode(false),
//			createError:     alreadyExists,
//			existingNode:    newNode(true),
//			expectedResult:  true,
//			expectedActions: 3,
//			testSavedNode:   true,
//			savedNodeIndex:  2,
//			savedNodeCMAD:   false,
//		},
//		{
//			name:            "success case - existing node - CMAD enabled",
//			newNode:         newNode(true),
//			createError:     alreadyExists,
//			existingNode:    newNode(false),
//			expectedResult:  true,
//			expectedActions: 3,
//			testSavedNode:   true,
//			savedNodeIndex:  2,
//			savedNodeCMAD:   true,
//		},
//		{
//			name:            "create failed",
//			newNode:         newNode(false),
//			createError:     conflict,
//			expectedResult:  false,
//			expectedActions: 1,
//		},
//		{
//			name:            "get existing node failed",
//			newNode:         newNode(false),
//			createError:     alreadyExists,
//			getError:        conflict,
//			expectedResult:  false,
//			expectedActions: 2,
//		},
//		{
//			name:            "update existing node failed",
//			newNode:         newNode(false),
//			createError:     alreadyExists,
//			existingNode:    newNode(true),
//			patchError:      conflict,
//			expectedResult:  false,
//			expectedActions: 3,
//		},
//	}
//
//	for _, tc := range cases {
//		testKubelet := newTestKubelet(t, false /* controllerAttachDetachEnabled is a don't-care for this test */)
//		defer testKubelet.Cleanup()
//		kubelet := testKubelet.kubelet
//		kubeClient := testKubelet.fakeKubeClient
//
//		kubeClient.AddReactor("create", "nodes", func(action core.Action) (bool, runtime.Object, error) {
//			return true, nil, tc.createError
//		})
//		kubeClient.AddReactor("get", "nodes", func(action core.Action) (bool, runtime.Object, error) {
//			// Return an existing (matching) node on get.
//			return true, tc.existingNode, tc.getError
//		})
//		kubeClient.AddReactor("patch", "nodes", func(action core.Action) (bool, runtime.Object, error) {
//			if action.GetSubresource() == "status" {
//				return true, nil, tc.patchError
//			}
//			return notImplemented(action)
//		})
//		kubeClient.AddReactor("delete", "nodes", func(action core.Action) (bool, runtime.Object, error) {
//			return true, nil, tc.deleteError
//		})
//		addNotImplatedReaction(kubeClient)
//
//		result := kubelet.tryRegisterWithAPIServer(tc.newNode)
//		require.Equal(t, tc.expectedResult, result, "test [%s]", tc.name)
//
//		actions := kubeClient.Actions()
//		assert.Len(t, actions, tc.expectedActions, "test [%s]", tc.name)
//
//		if tc.testSavedNode {
//			var savedNode *v1.Node
//
//			t.Logf("actions: %v: %+v", len(actions), actions)
//			action := actions[tc.savedNodeIndex]
//			if action.GetVerb() == "create" {
//				createAction := action.(core.CreateAction)
//				obj := createAction.GetObject()
//				require.IsType(t, &v1.Node{}, obj)
//				savedNode = obj.(*v1.Node)
//			} else if action.GetVerb() == "patch" {
//				patchAction := action.(core.PatchActionImpl)
//				var err error
//				savedNode, err = applyNodeStatusPatch(tc.existingNode, patchAction.GetPatch())
//				require.NoError(t, err)
//			}
//
//			actualCMAD, _ := strconv.ParseBool(savedNode.Annotations[util.ControllerManagedAttachAnnotation])
//			assert.Equal(t, tc.savedNodeCMAD, actualCMAD, "test [%s]", tc.name)
//		}
//	}
//}

//func TestUpdateNewNodeStatusTooLargeReservation(t *testing.T) {
//	const nodeStatusMaxImages = 5
//
//	// generate one more in inputImageList than we configure the Kubelet to report
//	inputImageList, _ := generateTestingImageLists(nodeStatusMaxImages+1, nodeStatusMaxImages)
//	testKubelet := newTestKubeletWithImageList(
//		t, inputImageList, false /* controllerAttachDetachEnabled */, true /* initFakeVolumePlugin */)
//	defer testKubelet.Cleanup()
//	kubelet := testKubelet.kubelet
//	kubelet.nodeStatusMaxImages = nodeStatusMaxImages
//	testKubelet.kubelet.kubeTPClients = nil // ensure only the heartbeat client is used
//	kubelet.containerManager = &localCM{
//		ContainerManager: cm.NewStubContainerManager(),
//		allocatableReservation: v1.ResourceList{
//			v1.ResourceCPU:              *resource.NewMilliQuantity(40000, resource.DecimalSI),
//			v1.ResourceEphemeralStorage: *resource.NewQuantity(1000, resource.BinarySI),
//		},
//		capacity: v1.ResourceList{
//			v1.ResourceCPU:              *resource.NewMilliQuantity(2000, resource.DecimalSI),
//			v1.ResourceMemory:           *resource.NewQuantity(10e9, resource.BinarySI),
//			v1.ResourceEphemeralStorage: *resource.NewQuantity(3000, resource.BinarySI),
//		},
//	}
//	// Since this test retroactively overrides the stub container manager,
//	// we have to regenerate default status setters.
//	kubelet.setNodeStatusFuncs = kubelet.defaultNodeStatusFuncs()
//
//	kubeClient := testKubelet.fakeKubeClient
//	existingNode := v1.Node{ObjectMeta: metav1.ObjectMeta{Name: testKubeletHostname}}
//	kubeClient.ReactionChain = fake.NewSimpleClientset(&v1.NodeList{Items: []v1.Node{existingNode}}).ReactionChain
//	machineInfo := &cadvisorapi.MachineInfo{
//		MachineID:      "123",
//		SystemUUID:     "abc",
//		BootID:         "1b3",
//		NumCores:       2,
//		MemoryCapacity: 10e9, // 10G
//	}
//	kubelet.machineInfo = machineInfo
//
//	expectedNode := &v1.Node{
//		ObjectMeta: metav1.ObjectMeta{Name: testKubeletHostname},
//		Spec:       v1.NodeSpec{},
//		Status: v1.NodeStatus{
//			Capacity: v1.ResourceList{
//				v1.ResourceCPU:              *resource.NewMilliQuantity(2000, resource.DecimalSI),
//				v1.ResourceMemory:           *resource.NewQuantity(10e9, resource.BinarySI),
//				v1.ResourcePods:             *resource.NewQuantity(0, resource.DecimalSI),
//				v1.ResourceEphemeralStorage: *resource.NewQuantity(3000, resource.BinarySI),
//			},
//			Allocatable: v1.ResourceList{
//				v1.ResourceCPU:              *resource.NewMilliQuantity(0, resource.DecimalSI),
//				v1.ResourceMemory:           *resource.NewQuantity(10e9, resource.BinarySI),
//				v1.ResourcePods:             *resource.NewQuantity(0, resource.DecimalSI),
//				v1.ResourceEphemeralStorage: *resource.NewQuantity(2000, resource.BinarySI),
//			},
//		},
//	}
//
//	kubelet.updateRuntimeUp()
//	assert.NoError(t, kubelet.updateNodeStatus())
//	actions := kubeClient.Actions()
//	require.Len(t, actions, 2)
//	require.True(t, actions[1].Matches("patch", "nodes"))
//	require.Equal(t, actions[1].GetSubresource(), "status")
//
//	updatedNode, err := applyNodeStatusPatch(&existingNode, actions[1].(core.PatchActionImpl).GetPatch())
//	assert.NoError(t, err)
//	assert.True(t, apiequality.Semantic.DeepEqual(expectedNode.Status.Allocatable, updatedNode.Status.Allocatable), "%s", diff.ObjectDiff(expectedNode.Status.Allocatable, updatedNode.Status.Allocatable))
//}
//
//func TestUpdateDefaultLabels(t *testing.T) {
//	testKubelet := newTestKubelet(t, false /* controllerAttachDetachEnabled */)
//	testKubelet.kubelet.kubeTPClients = nil // ensure only the heartbeat client is used
//
//	cases := []struct {
//		name         string
//		initialNode  *v1.Node
//		existingNode *v1.Node
//		needsUpdate  bool
//		finalLabels  map[string]string
//	}{
//		{
//			name: "make sure default labels exist",
//			initialNode: &v1.Node{
//				ObjectMeta: metav1.ObjectMeta{
//					Labels: map[string]string{
//						v1.LabelHostname:                "new-hostname",
//						v1.LabelZoneFailureDomainStable: "new-zone-failure-domain",
//						v1.LabelZoneRegionStable:        "new-zone-region",
//						v1.LabelZoneFailureDomain:       "new-zone-failure-domain",
//						v1.LabelZoneRegion:              "new-zone-region",
//						v1.LabelInstanceTypeStable:      "new-instance-type",
//						v1.LabelInstanceType:            "new-instance-type",
//						kubeletapis.LabelOS:             "new-os",
//						kubeletapis.LabelArch:           "new-arch",
//					},
//				},
//			},
//			existingNode: &v1.Node{
//				ObjectMeta: metav1.ObjectMeta{
//					Labels: map[string]string{},
//				},
//			},
//			needsUpdate: true,
//			finalLabels: map[string]string{
//				v1.LabelHostname:                "new-hostname",
//				v1.LabelZoneFailureDomainStable: "new-zone-failure-domain",
//				v1.LabelZoneRegionStable:        "new-zone-region",
//				v1.LabelZoneFailureDomain:       "new-zone-failure-domain",
//				v1.LabelZoneRegion:              "new-zone-region",
//				v1.LabelInstanceTypeStable:      "new-instance-type",
//				v1.LabelInstanceType:            "new-instance-type",
//				kubeletapis.LabelOS:             "new-os",
//				kubeletapis.LabelArch:           "new-arch",
//			},
//		},
//		{
//			name: "make sure default labels are up to date",
//			initialNode: &v1.Node{
//				ObjectMeta: metav1.ObjectMeta{
//					Labels: map[string]string{
//						v1.LabelHostname:                "new-hostname",
//						v1.LabelZoneFailureDomainStable: "new-zone-failure-domain",
//						v1.LabelZoneRegionStable:        "new-zone-region",
//						v1.LabelZoneFailureDomain:       "new-zone-failure-domain",
//						v1.LabelZoneRegion:              "new-zone-region",
//						v1.LabelInstanceTypeStable:      "new-instance-type",
//						v1.LabelInstanceType:            "new-instance-type",
//						kubeletapis.LabelOS:             "new-os",
//						kubeletapis.LabelArch:           "new-arch",
//					},
//				},
//			},
//			existingNode: &v1.Node{
//				ObjectMeta: metav1.ObjectMeta{
//					Labels: map[string]string{
//						v1.LabelHostname:                "old-hostname",
//						v1.LabelZoneFailureDomainStable: "old-zone-failure-domain",
//						v1.LabelZoneRegionStable:        "old-zone-region",
//						v1.LabelZoneFailureDomain:       "old-zone-failure-domain",
//						v1.LabelZoneRegion:              "old-zone-region",
//						v1.LabelInstanceTypeStable:      "old-instance-type",
//						v1.LabelInstanceType:            "old-instance-type",
//						kubeletapis.LabelOS:             "old-os",
//						kubeletapis.LabelArch:           "old-arch",
//					},
//				},
//			},
//			needsUpdate: true,
//			finalLabels: map[string]string{
//				v1.LabelHostname:                "new-hostname",
//				v1.LabelZoneFailureDomainStable: "new-zone-failure-domain",
//				v1.LabelZoneRegionStable:        "new-zone-region",
//				v1.LabelZoneFailureDomain:       "new-zone-failure-domain",
//				v1.LabelZoneRegion:              "new-zone-region",
//				v1.LabelInstanceTypeStable:      "new-instance-type",
//				v1.LabelInstanceType:            "new-instance-type",
//				kubeletapis.LabelOS:             "new-os",
//				kubeletapis.LabelArch:           "new-arch",
//			},
//		},
//		{
//			name: "make sure existing labels do not get deleted",
//			initialNode: &v1.Node{
//				ObjectMeta: metav1.ObjectMeta{
//					Labels: map[string]string{
//						v1.LabelHostname:                "new-hostname",
//						v1.LabelZoneFailureDomainStable: "new-zone-failure-domain",
//						v1.LabelZoneRegionStable:        "new-zone-region",
//						v1.LabelZoneFailureDomain:       "new-zone-failure-domain",
//						v1.LabelZoneRegion:              "new-zone-region",
//						v1.LabelInstanceTypeStable:      "new-instance-type",
//						v1.LabelInstanceType:            "new-instance-type",
//						kubeletapis.LabelOS:             "new-os",
//						kubeletapis.LabelArch:           "new-arch",
//					},
//				},
//			},
//			existingNode: &v1.Node{
//				ObjectMeta: metav1.ObjectMeta{
//					Labels: map[string]string{
//						v1.LabelHostname:                "new-hostname",
//						v1.LabelZoneFailureDomainStable: "new-zone-failure-domain",
//						v1.LabelZoneRegionStable:        "new-zone-region",
//						v1.LabelZoneFailureDomain:       "new-zone-failure-domain",
//						v1.LabelZoneRegion:              "new-zone-region",
//						v1.LabelInstanceTypeStable:      "new-instance-type",
//						v1.LabelInstanceType:            "new-instance-type",
//						kubeletapis.LabelOS:             "new-os",
//						kubeletapis.LabelArch:           "new-arch",
//						"please-persist":                "foo",
//					},
//				},
//			},
//			needsUpdate: false,
//			finalLabels: map[string]string{
//				v1.LabelHostname:                "new-hostname",
//				v1.LabelZoneFailureDomainStable: "new-zone-failure-domain",
//				v1.LabelZoneRegionStable:        "new-zone-region",
//				v1.LabelZoneFailureDomain:       "new-zone-failure-domain",
//				v1.LabelZoneRegion:              "new-zone-region",
//				v1.LabelInstanceTypeStable:      "new-instance-type",
//				v1.LabelInstanceType:            "new-instance-type",
//				kubeletapis.LabelOS:             "new-os",
//				kubeletapis.LabelArch:           "new-arch",
//				"please-persist":                "foo",
//			},
//		},
//		{
//			name: "make sure existing labels do not get deleted when initial node has no opinion",
//			initialNode: &v1.Node{
//				ObjectMeta: metav1.ObjectMeta{
//					Labels: map[string]string{},
//				},
//			},
//			existingNode: &v1.Node{
//				ObjectMeta: metav1.ObjectMeta{
//					Labels: map[string]string{
//						v1.LabelHostname:                "new-hostname",
//						v1.LabelZoneFailureDomainStable: "new-zone-failure-domain",
//						v1.LabelZoneRegionStable:        "new-zone-region",
//						v1.LabelZoneFailureDomain:       "new-zone-failure-domain",
//						v1.LabelZoneRegion:              "new-zone-region",
//						v1.LabelInstanceTypeStable:      "new-instance-type",
//						v1.LabelInstanceType:            "new-instance-type",
//						kubeletapis.LabelOS:             "new-os",
//						kubeletapis.LabelArch:           "new-arch",
//						"please-persist":                "foo",
//					},
//				},
//			},
//			needsUpdate: false,
//			finalLabels: map[string]string{
//				v1.LabelHostname:                "new-hostname",
//				v1.LabelZoneFailureDomainStable: "new-zone-failure-domain",
//				v1.LabelZoneRegionStable:        "new-zone-region",
//				v1.LabelZoneFailureDomain:       "new-zone-failure-domain",
//				v1.LabelZoneRegion:              "new-zone-region",
//				v1.LabelInstanceTypeStable:      "new-instance-type",
//				v1.LabelInstanceType:            "new-instance-type",
//				kubeletapis.LabelOS:             "new-os",
//				kubeletapis.LabelArch:           "new-arch",
//				"please-persist":                "foo",
//			},
//		},
//		{
//			name: "no update needed",
//			initialNode: &v1.Node{
//				ObjectMeta: metav1.ObjectMeta{
//					Labels: map[string]string{
//						v1.LabelHostname:                "new-hostname",
//						v1.LabelZoneFailureDomainStable: "new-zone-failure-domain",
//						v1.LabelZoneRegionStable:        "new-zone-region",
//						v1.LabelZoneFailureDomain:       "new-zone-failure-domain",
//						v1.LabelZoneRegion:              "new-zone-region",
//						v1.LabelInstanceTypeStable:      "new-instance-type",
//						v1.LabelInstanceType:            "new-instance-type",
//						kubeletapis.LabelOS:             "new-os",
//						kubeletapis.LabelArch:           "new-arch",
//					},
//				},
//			},
//			existingNode: &v1.Node{
//				ObjectMeta: metav1.ObjectMeta{
//					Labels: map[string]string{
//						v1.LabelHostname:                "new-hostname",
//						v1.LabelZoneFailureDomainStable: "new-zone-failure-domain",
//						v1.LabelZoneRegionStable:        "new-zone-region",
//						v1.LabelZoneFailureDomain:       "new-zone-failure-domain",
//						v1.LabelZoneRegion:              "new-zone-region",
//						v1.LabelInstanceTypeStable:      "new-instance-type",
//						v1.LabelInstanceType:            "new-instance-type",
//						kubeletapis.LabelOS:             "new-os",
//						kubeletapis.LabelArch:           "new-arch",
//					},
//				},
//			},
//			needsUpdate: false,
//			finalLabels: map[string]string{
//				v1.LabelHostname:                "new-hostname",
//				v1.LabelZoneFailureDomainStable: "new-zone-failure-domain",
//				v1.LabelZoneRegionStable:        "new-zone-region",
//				v1.LabelZoneFailureDomain:       "new-zone-failure-domain",
//				v1.LabelZoneRegion:              "new-zone-region",
//				v1.LabelInstanceTypeStable:      "new-instance-type",
//				v1.LabelInstanceType:            "new-instance-type",
//				kubeletapis.LabelOS:             "new-os",
//				kubeletapis.LabelArch:           "new-arch",
//			},
//		},
//		{
//			name: "not panic when existing node has nil labels",
//			initialNode: &v1.Node{
//				ObjectMeta: metav1.ObjectMeta{
//					Labels: map[string]string{
//						v1.LabelHostname:                "new-hostname",
//						v1.LabelZoneFailureDomainStable: "new-zone-failure-domain",
//						v1.LabelZoneRegionStable:        "new-zone-region",
//						v1.LabelZoneFailureDomain:       "new-zone-failure-domain",
//						v1.LabelZoneRegion:              "new-zone-region",
//						v1.LabelInstanceTypeStable:      "new-instance-type",
//						v1.LabelInstanceType:            "new-instance-type",
//						kubeletapis.LabelOS:             "new-os",
//						kubeletapis.LabelArch:           "new-arch",
//					},
//				},
//			},
//			existingNode: &v1.Node{
//				ObjectMeta: metav1.ObjectMeta{},
//			},
//			needsUpdate: true,
//			finalLabels: map[string]string{
//				v1.LabelHostname:                "new-hostname",
//				v1.LabelZoneFailureDomainStable: "new-zone-failure-domain",
//				v1.LabelZoneRegionStable:        "new-zone-region",
//				v1.LabelZoneFailureDomain:       "new-zone-failure-domain",
//				v1.LabelZoneRegion:              "new-zone-region",
//				v1.LabelInstanceTypeStable:      "new-instance-type",
//				v1.LabelInstanceType:            "new-instance-type",
//				kubeletapis.LabelOS:             "new-os",
//				kubeletapis.LabelArch:           "new-arch",
//			},
//		},
//		{
//			name: "backfill required for new stable labels for os/arch/zones/regions/instance-type",
//			initialNode: &v1.Node{
//				ObjectMeta: metav1.ObjectMeta{
//					Labels: map[string]string{
//						v1.LabelHostname:                "new-hostname",
//						v1.LabelZoneFailureDomainStable: "new-zone-failure-domain",
//						v1.LabelZoneRegionStable:        "new-zone-region",
//						v1.LabelZoneFailureDomain:       "new-zone-failure-domain",
//						v1.LabelZoneRegion:              "new-zone-region",
//						v1.LabelInstanceTypeStable:      "new-instance-type",
//						v1.LabelInstanceType:            "new-instance-type",
//						kubeletapis.LabelOS:             "new-os",
//						kubeletapis.LabelArch:           "new-arch",
//						v1.LabelOSStable:                "new-os",
//						v1.LabelArchStable:              "new-arch",
//					},
//				},
//			},
//			existingNode: &v1.Node{
//				ObjectMeta: metav1.ObjectMeta{
//					Labels: map[string]string{
//						v1.LabelHostname:          "new-hostname",
//						v1.LabelZoneFailureDomain: "new-zone-failure-domain",
//						v1.LabelZoneRegion:        "new-zone-region",
//						v1.LabelInstanceType:      "new-instance-type",
//						kubeletapis.LabelOS:       "new-os",
//						kubeletapis.LabelArch:     "new-arch",
//					},
//				},
//			},
//			needsUpdate: true,
//			finalLabels: map[string]string{
//				v1.LabelHostname:                "new-hostname",
//				v1.LabelZoneFailureDomainStable: "new-zone-failure-domain",
//				v1.LabelZoneRegionStable:        "new-zone-region",
//				v1.LabelZoneFailureDomain:       "new-zone-failure-domain",
//				v1.LabelZoneRegion:              "new-zone-region",
//				v1.LabelInstanceTypeStable:      "new-instance-type",
//				v1.LabelInstanceType:            "new-instance-type",
//				kubeletapis.LabelOS:             "new-os",
//				kubeletapis.LabelArch:           "new-arch",
//				v1.LabelOSStable:                "new-os",
//				v1.LabelArchStable:              "new-arch",
//			},
//		},
//	}
//
//	for _, tc := range cases {
//		defer testKubelet.Cleanup()
//		kubelet := testKubelet.kubelet
//
//		needsUpdate := kubelet.updateDefaultLabels(tc.initialNode, tc.existingNode)
//		assert.Equal(t, tc.needsUpdate, needsUpdate, tc.name)
//		assert.Equal(t, tc.finalLabels, tc.existingNode.Labels, tc.name)
//	}
//}

//func TestReconcileExtendedResource(t *testing.T) {
//	testKubelet := newTestKubelet(t, false /* controllerAttachDetachEnabled */)
//	testKubelet.kubelet.kubeTPClients = nil // ensure only the heartbeat client is used
//	testKubelet.kubelet.containerManager = cm.NewStubContainerManagerWithExtendedResource(true /* shouldResetExtendedResourceCapacity*/)
//	testKubeletNoReset := newTestKubelet(t, false /* controllerAttachDetachEnabled */)
//	extendedResourceName1 := v1.ResourceName("test.com/resource1")
//	extendedResourceName2 := v1.ResourceName("test.com/resource2")
//
//	cases := []struct {
//		name         string
//		testKubelet  *TestKubelet
//		existingNode *v1.Node
//		expectedNode *v1.Node
//		needsUpdate  bool
//	}{
//		{
//			name:        "no update needed without extended resource",
//			testKubelet: testKubelet,
//			existingNode: &v1.Node{
//				Status: v1.NodeStatus{
//					Capacity: v1.ResourceList{
//						v1.ResourceCPU:              *resource.NewMilliQuantity(2000, resource.DecimalSI),
//						v1.ResourceMemory:           *resource.NewQuantity(10e9, resource.BinarySI),
//						v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
//					},
//					Allocatable: v1.ResourceList{
//						v1.ResourceCPU:              *resource.NewMilliQuantity(2000, resource.DecimalSI),
//						v1.ResourceMemory:           *resource.NewQuantity(10e9, resource.BinarySI),
//						v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
//					},
//				},
//			},
//			expectedNode: &v1.Node{
//				Status: v1.NodeStatus{
//					Capacity: v1.ResourceList{
//						v1.ResourceCPU:              *resource.NewMilliQuantity(2000, resource.DecimalSI),
//						v1.ResourceMemory:           *resource.NewQuantity(10e9, resource.BinarySI),
//						v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
//					},
//					Allocatable: v1.ResourceList{
//						v1.ResourceCPU:              *resource.NewMilliQuantity(2000, resource.DecimalSI),
//						v1.ResourceMemory:           *resource.NewQuantity(10e9, resource.BinarySI),
//						v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
//					},
//				},
//			},
//			needsUpdate: false,
//		},
//		{
//			name:        "extended resource capacity is not zeroed due to presence of checkpoint file",
//			testKubelet: testKubelet,
//			existingNode: &v1.Node{
//				Status: v1.NodeStatus{
//					Capacity: v1.ResourceList{
//						v1.ResourceCPU:              *resource.NewMilliQuantity(2000, resource.DecimalSI),
//						v1.ResourceMemory:           *resource.NewQuantity(10e9, resource.BinarySI),
//						v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
//					},
//					Allocatable: v1.ResourceList{
//						v1.ResourceCPU:              *resource.NewMilliQuantity(2000, resource.DecimalSI),
//						v1.ResourceMemory:           *resource.NewQuantity(10e9, resource.BinarySI),
//						v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
//					},
//				},
//			},
//			expectedNode: &v1.Node{
//				Status: v1.NodeStatus{
//					Capacity: v1.ResourceList{
//						v1.ResourceCPU:              *resource.NewMilliQuantity(2000, resource.DecimalSI),
//						v1.ResourceMemory:           *resource.NewQuantity(10e9, resource.BinarySI),
//						v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
//					},
//					Allocatable: v1.ResourceList{
//						v1.ResourceCPU:              *resource.NewMilliQuantity(2000, resource.DecimalSI),
//						v1.ResourceMemory:           *resource.NewQuantity(10e9, resource.BinarySI),
//						v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
//					},
//				},
//			},
//			needsUpdate: false,
//		},
//		{
//			name:        "extended resource capacity is zeroed",
//			testKubelet: testKubeletNoReset,
//			existingNode: &v1.Node{
//				Status: v1.NodeStatus{
//					Capacity: v1.ResourceList{
//						v1.ResourceCPU:              *resource.NewMilliQuantity(2000, resource.DecimalSI),
//						v1.ResourceMemory:           *resource.NewQuantity(10e9, resource.BinarySI),
//						v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
//						extendedResourceName1:       *resource.NewQuantity(int64(2), resource.DecimalSI),
//						extendedResourceName2:       *resource.NewQuantity(int64(10), resource.DecimalSI),
//					},
//					Allocatable: v1.ResourceList{
//						v1.ResourceCPU:              *resource.NewMilliQuantity(2000, resource.DecimalSI),
//						v1.ResourceMemory:           *resource.NewQuantity(10e9, resource.BinarySI),
//						v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
//						extendedResourceName1:       *resource.NewQuantity(int64(2), resource.DecimalSI),
//						extendedResourceName2:       *resource.NewQuantity(int64(10), resource.DecimalSI),
//					},
//				},
//			},
//			expectedNode: &v1.Node{
//				Status: v1.NodeStatus{
//					Capacity: v1.ResourceList{
//						v1.ResourceCPU:              *resource.NewMilliQuantity(2000, resource.DecimalSI),
//						v1.ResourceMemory:           *resource.NewQuantity(10e9, resource.BinarySI),
//						v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
//						extendedResourceName1:       *resource.NewQuantity(int64(0), resource.DecimalSI),
//						extendedResourceName2:       *resource.NewQuantity(int64(0), resource.DecimalSI),
//					},
//					Allocatable: v1.ResourceList{
//						v1.ResourceCPU:              *resource.NewMilliQuantity(2000, resource.DecimalSI),
//						v1.ResourceMemory:           *resource.NewQuantity(10e9, resource.BinarySI),
//						v1.ResourceEphemeralStorage: *resource.NewQuantity(5000, resource.BinarySI),
//						extendedResourceName1:       *resource.NewQuantity(int64(0), resource.DecimalSI),
//						extendedResourceName2:       *resource.NewQuantity(int64(0), resource.DecimalSI),
//					},
//				},
//			},
//			needsUpdate: true,
//		},
//	}
//
//	for _, tc := range cases {
//		defer testKubelet.Cleanup()
//		kubelet := testKubelet.kubelet
//		initialNode := &v1.Node{}
//
//		needsUpdate := kubelet.reconcileExtendedResource(initialNode, tc.existingNode)
//		assert.Equal(t, tc.needsUpdate, needsUpdate, tc.name)
//		assert.Equal(t, tc.expectedNode, tc.existingNode, tc.name)
//	}
//
//}

func TestValidateNodeIPParam(t *testing.T) {
	type test struct {
		nodeIP   string
		success  bool
		testName string
	}
	tests := []test{
		{
			nodeIP:   "",
			success:  false,
			testName: "IP not set",
		},
		{
			nodeIP:   "127.0.0.1",
			success:  false,
			testName: "IPv4 loopback address",
		},
		{
			nodeIP:   "::1",
			success:  false,
			testName: "IPv6 loopback address",
		},
		{
			nodeIP:   "224.0.0.1",
			success:  false,
			testName: "multicast IPv4 address",
		},
		{
			nodeIP:   "ff00::1",
			success:  false,
			testName: "multicast IPv6 address",
		},
		{
			nodeIP:   "169.254.0.1",
			success:  false,
			testName: "IPv4 link-local unicast address",
		},
		{
			nodeIP:   "fe80::0202:b3ff:fe1e:8329",
			success:  false,
			testName: "IPv6 link-local unicast address",
		},
		{
			nodeIP:   "0.0.0.0",
			success:  false,
			testName: "Unspecified IPv4 address",
		},
		{
			nodeIP:   "::",
			success:  false,
			testName: "Unspecified IPv6 address",
		},
		{
			nodeIP:   "1.2.3.4",
			success:  false,
			testName: "IPv4 address that doesn't belong to host",
		},
	}
	addrs, err := net.InterfaceAddrs()
	if err != nil {
		assert.Error(t, err, fmt.Sprintf(
			"Unable to obtain a list of the node's unicast interface addresses."))
	}
	for _, addr := range addrs {
		var ip net.IP
		switch v := addr.(type) {
		case *net.IPNet:
			ip = v.IP
		case *net.IPAddr:
			ip = v.IP
		}
		if ip.IsLoopback() || ip.IsLinkLocalUnicast() {
			break
		}
		successTest := test{
			nodeIP:   ip.String(),
			success:  true,
			testName: fmt.Sprintf("Success test case for address %s", ip.String()),
		}
		tests = append(tests, successTest)
	}
	for _, test := range tests {
		err := validateNodeIP(net.ParseIP(test.nodeIP))
		if test.success {
			assert.NoError(t, err, "test %s", test.testName)
		} else {
			assert.Error(t, err, fmt.Sprintf("test %s", test.testName))
		}
	}
}

//func TestRegisterWithApiServerWithTaint(t *testing.T) {
//	testKubelet := newTestKubelet(t, false /* controllerAttachDetachEnabled */)
//	defer testKubelet.Cleanup()
//	kubelet := testKubelet.kubelet
//	kubeClient := testKubelet.fakeKubeClient
//
//	machineInfo := &cadvisorapi.MachineInfo{
//		MachineID:      "123",
//		SystemUUID:     "abc",
//		BootID:         "1b3",
//		NumCores:       2,
//		MemoryCapacity: 1024,
//	}
//	kubelet.machineInfo = machineInfo
//
//	var gotNode runtime.Object
//	kubeClient.AddReactor("create", "nodes", func(action core.Action) (bool, runtime.Object, error) {
//		createAction := action.(core.CreateAction)
//		gotNode = createAction.GetObject()
//		return true, gotNode, nil
//	})
//
//	addNotImplatedReaction(kubeClient)
//
//	// Make node to be unschedulable.
//	kubelet.registerSchedulable = false
//
//	forEachFeatureGate(t, []featuregate.Feature{features.TaintNodesByCondition}, func(t *testing.T) {
//		// Reset kubelet status for each test.
//		kubelet.registrationCompleted = false
//
//		// Register node to apiserver.
//		kubelet.registerWithAPIServer()
//
//		// Check the unschedulable taint.
//		got := gotNode.(*v1.Node)
//		unschedulableTaint := &v1.Taint{
//			Key:    v1.TaintNodeUnschedulable,
//			Effect: v1.TaintEffectNoSchedule,
//		}
//
//		require.Equal(t,
//			utilfeature.DefaultFeatureGate.Enabled(features.TaintNodesByCondition),
//			taintutil.TaintExists(got.Spec.Taints, unschedulableTaint),
//			"test unschedulable taint for TaintNodesByCondition")
//
//		return
//	})
//}

func TestNodeStatusHasChanged(t *testing.T) {
	fakeNow := metav1.Date(2015, 1, 1, 12, 0, 0, 0, time.UTC)
	fakeFuture := metav1.Time{Time: fakeNow.Time.Add(time.Minute)}
	readyCondition := v1.NodeCondition{
		Type:               v1.NodeReady,
		Status:             v1.ConditionTrue,
		LastHeartbeatTime:  fakeNow,
		LastTransitionTime: fakeNow,
	}
	readyConditionAtDiffHearbeatTime := v1.NodeCondition{
		Type:               v1.NodeReady,
		Status:             v1.ConditionTrue,
		LastHeartbeatTime:  fakeFuture,
		LastTransitionTime: fakeNow,
	}
	readyConditionAtDiffTransitionTime := v1.NodeCondition{
		Type:               v1.NodeReady,
		Status:             v1.ConditionTrue,
		LastHeartbeatTime:  fakeFuture,
		LastTransitionTime: fakeFuture,
	}
	notReadyCondition := v1.NodeCondition{
		Type:               v1.NodeReady,
		Status:             v1.ConditionFalse,
		LastHeartbeatTime:  fakeNow,
		LastTransitionTime: fakeNow,
	}
	memoryPressureCondition := v1.NodeCondition{
		Type:               v1.NodeMemoryPressure,
		Status:             v1.ConditionFalse,
		LastHeartbeatTime:  fakeNow,
		LastTransitionTime: fakeNow,
	}
	testcases := []struct {
		name           string
		originalStatus *v1.NodeStatus
		status         *v1.NodeStatus
		expectChange   bool
	}{
		{
			name:           "Node status does not change with nil status.",
			originalStatus: nil,
			status:         nil,
			expectChange:   false,
		},
		{
			name:           "Node status does not change with default status.",
			originalStatus: &v1.NodeStatus{},
			status:         &v1.NodeStatus{},
			expectChange:   false,
		},
		{
			name:           "Node status changes with nil and default status.",
			originalStatus: nil,
			status:         &v1.NodeStatus{},
			expectChange:   true,
		},
		{
			name:           "Node status changes with nil and status.",
			originalStatus: nil,
			status: &v1.NodeStatus{
				Conditions: []v1.NodeCondition{readyCondition, memoryPressureCondition},
			},
			expectChange: true,
		},
		{
			name:           "Node status does not change with empty conditions.",
			originalStatus: &v1.NodeStatus{Conditions: []v1.NodeCondition{}},
			status:         &v1.NodeStatus{Conditions: []v1.NodeCondition{}},
			expectChange:   false,
		},
		{
			name: "Node status does not change",
			originalStatus: &v1.NodeStatus{
				Conditions: []v1.NodeCondition{readyCondition, memoryPressureCondition},
			},
			status: &v1.NodeStatus{
				Conditions: []v1.NodeCondition{readyCondition, memoryPressureCondition},
			},
			expectChange: false,
		},
		{
			name: "Node status does not change even if heartbeat time changes.",
			originalStatus: &v1.NodeStatus{
				Conditions: []v1.NodeCondition{readyCondition, memoryPressureCondition},
			},
			status: &v1.NodeStatus{
				Conditions: []v1.NodeCondition{readyConditionAtDiffHearbeatTime, memoryPressureCondition},
			},
			expectChange: false,
		},
		{
			name: "Node status does not change even if the orders of conditions are different.",
			originalStatus: &v1.NodeStatus{
				Conditions: []v1.NodeCondition{readyCondition, memoryPressureCondition},
			},
			status: &v1.NodeStatus{
				Conditions: []v1.NodeCondition{memoryPressureCondition, readyConditionAtDiffHearbeatTime},
			},
			expectChange: false,
		},
		{
			name: "Node status changes if condition status differs.",
			originalStatus: &v1.NodeStatus{
				Conditions: []v1.NodeCondition{readyCondition, memoryPressureCondition},
			},
			status: &v1.NodeStatus{
				Conditions: []v1.NodeCondition{notReadyCondition, memoryPressureCondition},
			},
			expectChange: true,
		},
		{
			name: "Node status changes if transition time changes.",
			originalStatus: &v1.NodeStatus{
				Conditions: []v1.NodeCondition{readyCondition, memoryPressureCondition},
			},
			status: &v1.NodeStatus{
				Conditions: []v1.NodeCondition{readyConditionAtDiffTransitionTime, memoryPressureCondition},
			},
			expectChange: true,
		},
		{
			name: "Node status changes with different number of conditions.",
			originalStatus: &v1.NodeStatus{
				Conditions: []v1.NodeCondition{readyCondition},
			},
			status: &v1.NodeStatus{
				Conditions: []v1.NodeCondition{readyCondition, memoryPressureCondition},
			},
			expectChange: true,
		},
		{
			name: "Node status changes with different phase.",
			originalStatus: &v1.NodeStatus{
				Phase:      v1.NodePending,
				Conditions: []v1.NodeCondition{readyCondition},
			},
			status: &v1.NodeStatus{
				Phase:      v1.NodeRunning,
				Conditions: []v1.NodeCondition{readyCondition},
			},
			expectChange: true,
		},
	}
	for _, tc := range testcases {
		t.Run(tc.name, func(t *testing.T) {
			originalStatusCopy := tc.originalStatus.DeepCopy()
			statusCopy := tc.status.DeepCopy()
			changed := nodeStatusHasChanged(tc.originalStatus, tc.status)
			assert.Equal(t, tc.expectChange, changed, "Expect node status change to be %t, but got %t.", tc.expectChange, changed)
			assert.True(t, apiequality.Semantic.DeepEqual(originalStatusCopy, tc.originalStatus), "%s", diff.ObjectDiff(originalStatusCopy, tc.originalStatus))
			assert.True(t, apiequality.Semantic.DeepEqual(statusCopy, tc.status), "%s", diff.ObjectDiff(statusCopy, tc.status))
		})
	}
}
