}{
		{
			name: "node updates label which matches topologyKey",
			pod: st.MakePod().Name("p").SpreadConstraint(1, "zone", v1.DoNotSchedule, fooSelector, nil, nil, nil, nil).
				Obj(),
			oldNode:      st.MakeNode().Name("node-a").Label("zone", "zone1").Obj(),
			newNode:      st.MakeNode().Name("node-a").Label("zone", "zone2").Obj(),
			expectedHint: framework.Queue,
		},
		{

gcloud-list compute instance-templates "name ~ '${INSTANCE_PREFIX}.*'"
gcloud-list compute instance-groups "${ZONE:+"zone:(${ZONE}) AND "}name ~ '${INSTANCE_PREFIX}.*'"
gcloud-list compute instances "${ZONE:+"zone:(${ZONE}) AND "}name ~ '${INSTANCE_PREFIX}.*'"

# List disk resources, filtering by instance prefix if provided.
gcloud-list compute disks "${ZONE:+"zone:(${ZONE}) AND "}name ~ '${INSTANCE_PREFIX}.*'"

		name:         "multiple hints per endpoint, filtering includes any endpoint with zone included",
		hintsEnabled: true,
		nodeLabels:   map[string]string{v1.LabelTopologyZone: "zone-c"},
		serviceInfo:  &BaseServicePortInfo{hintsAnnotation: "auto"},
		endpoints: []Endpoint{
			&BaseEndpointInfo{endpoint: "10.1.2.3:80", zoneHints: sets.New[string]("zone-a", "zone-b", "zone-c"), ready: true},

			expectedTree: map[string][]string{
				"region-1:\x00:":       {"node-1"},
				":\x00:zone-2":         {"node-2"},
				"region-1:\x00:zone-2": {"node-3", "node-4"},
				"region-1:\x00:zone-3": {"node-5"},
				"region-2:\x00:zone-2": {"node-6"},
			},
		},
		{
			name:          "remove a few nodes including one from a zone with multiple nodes",
			existingNodes: allNodes[:7],
			nodesToRemove: allNodes[1:4],

			nodes: []*v1.Node{
				st.MakeNode().Name("node-a").Label("zone", "zone1").Label(v1.LabelHostname, "node-a").Obj(),
				st.MakeNode().Name("node-b").Label("zone", "zone1").Label(v1.LabelHostname, "node-b").Obj(),
				st.MakeNode().Name("node-x").Label("zone", "zone2").Label(v1.LabelHostname, "node-x").Obj(),
			},
			failedNodes: []*v1.Node{
				st.MakeNode().Name("node-y").Label("zone", "zone2").Label(v1.LabelHostname, "node-y").Obj(),
			},

				st.MakeNode().Name("node-b").Label("zone", "zone1").Label("node", "node-b").Obj(),
				st.MakeNode().Name("node-x").Label("zone", "zone2").Label("node", "node-x").Obj(),
				st.MakeNode().Name("node-y").Label("zone", "zone2").Label("node", "node-y").Obj(),
				st.MakeNode().Name("node-o").Label("zone", "zone3").Label("node", "node-o").Obj(),
				st.MakeNode().Name("node-p").Label("zone", "zone3").Label("node", "node-p").Obj(),
			},

function usage() {
  echo "${0} -p PROJECT [-z ZONE] [-c CLUSTER_NAME] [-v CLUSTER_VERSION] [-m MACHINE_TYPE] [-n NUM_NODES]"
  echo ''
  # shellcheck disable=SC2016
  echo '  -p: Specifies the GCP Project name. (defaults to $PROJECT_NAME, or current GCP project if unspecified).'
  # shellcheck disable=SC2016
  echo '  -z: Specifies the zone. (defaults to $ZONE, or "us-central1-f").'
  # shellcheck disable=SC2016

		isDST = false
		return
	}

	if zone := l.cacheZone; zone != nil && l.cacheStart <= sec && sec < l.cacheEnd {
		name = zone.name
		offset = zone.offset
		start = l.cacheStart
		end = l.cacheEnd
		isDST = zone.isDST
		return
	}

	if len(l.tx) == 0 || sec < l.tx[0].when {
		zone := &l.zone[l.lookupFirstZone()]
		name = zone.name
		offset = zone.offset
		start = alpha
		if len(l.tx) > 0 {

func (nt *nodeTree) addNode(logger klog.Logger, n *v1.Node) {
	zone := utilnode.GetZoneKey(n)
	if na, ok := nt.tree[zone]; ok {
		for _, nodeName := range na {
			if nodeName == n.Name {
				logger.Info("Did not add to the NodeTree because it already exists", "node", klog.KObj(n))
				return
			}
		}
		nt.tree[zone] = append(na, n.Name)
	} else {
		nt.zones = append(nt.zones, zone)
		nt.tree[zone] = []string{n.Name}

					withLabel("topology.kubernetes.io/zone", "zone-b").Node,
				makeNode("zone-b-node-b").
					withLabel("topology.kubernetes.io/region", "region-b").
					withLabel("topology.kubernetes.io/zone", "zone-b").Node,
				makeNode("zone-c-node-a").
					withLabel("topology.kubernetes.io/region", "region-c").
					withLabel("topology.kubernetes.io/zone", "zone-c").Node,
				makeNode("zone-c-node-b").