MatchLabelExpressions: []api.TopologySelectorLabelRequirement{{
			Key:    "failure-domain.beta.kubernetes.io/zone",
			Values: []string{"zone1", "zone2"},
		}},
	}, {
		MatchLabelExpressions: []api.TopologySelectorLabelRequirement{{
			Key:    "failure-domain.beta.kubernetes.io/zone",
			Values: []string{"zone2", "zone1"},
		}},
	}}

	cases := map[string]bindingTest{
		"no topology": {

			},
		},
		{
			name: "should return correct az if node has only zone label",
			pods: []*corev1.Pod{pod1, pod2},
			nodes: []*corev1.Node{
				generateNode("node1", map[string]string{NodeZoneLabel: "zone1"}),
				generateNode("node2", map[string]string{NodeZoneLabel: "zone2"}),
			},
			wantAZ: map[*corev1.Pod]string{
				pod1: "/zone1/",
				pod2: "/zone2/",
			},
		},
		{

				tf.RegisterPluginAsExtensions(podtopologyspread.Name, podTopologySpreadFunc, "PreFilter", "Filter"),
			},
			nodeNames: []string{"node-a/zone1", "node-b/zone1", "node-x/zone2"},
			testPods: []*v1.Pod{
				st.MakePod().Name("p").UID("p").Label("foo", "").Priority(highPriority).
					SpreadConstraint(1, "zone", v1.DoNotSchedule, st.MakeLabelSelector().Exists("foo").Obj(), nil, nil, nil, nil).

			"ns/svc1": {zoneB: 5, zoneC: 4},
		},
		expectedQueueLen: 1,
	}, {
		name: "even zones but node missing cpu, sync required",
		nodes: []nodeInfo{
			{zoneLabel: &zoneB, ready: &readyTrue, cpu: &cpu2000},
			{zoneLabel: &zoneB, ready: &readyTrue},
			{zoneLabel: &zoneC, ready: &readyTrue, cpu: &cpu2000},
			{zoneLabel: &zoneC, ready: &readyTrue, cpu: &cpu2000},
		},

				b = append(b, name...)
				break
			}
			// No time zone known for this time, but we must print one.
			// Use the -0700 format.
			zone := offset / 60 // convert to minutes
			if zone < 0 {
				b = append(b, '-')
				zone = -zone
			} else {
				b = append(b, '+')
			}
			b = appendInt(b, zone/60, 2)
			b = appendInt(b, zone%60, 2)
		case stdFracSecond0, stdFracSecond9:

}

// addPodEvictorForNewZone checks if new zone appeared, and if so add new evictor.
func (nc *Controller) addPodEvictorForNewZone(logger klog.Logger, node *v1.Node) {
	nc.evictorLock.Lock()
	defer nc.evictorLock.Unlock()
	zone := nodetopology.GetZoneKey(node)
	if _, found := nc.zoneStates[zone]; !found {
		nc.zoneStates[zone] = stateInitial
		nc.zoneNoExecuteTainter[zone] =
			scheduler.NewRateLimitedTimedQueue(

	return t
}

// Location returns the time zone information associated with t.
func (t Time) Location() *Location {
	l := t.loc
	if l == nil {
		l = UTC
	}
	return l
}

// Zone computes the time zone in effect at time t, returning the abbreviated
// name of the zone (such as "CET") and its offset in seconds east of UTC.
func (t Time) Zone() (name string, offset int) {

	}

	// makeIPv6 produces a set of IPv6 subtests with an optional zone identifier.
	makeIPv6 := func(zone string) []subtest {
		if zone != "" {
			zone = "%" + zone
		}

		return []subtest{
			{
				ip:   mustIP(fmt.Sprintf("2001:db8::1%s", zone)),
				bits: 255,
			},
			{
				ip:   mustIP(fmt.Sprintf("2001:db8::1%s", zone)),
				bits: 32,
				p:    mustPrefix("2001:db8::/32"),

	// Issue 4064: handle locations without any zone transitions.
	loc, err := LoadLocation("Etc/GMT+1")
	if err != nil {
		t.Fatal(err)
	}

	// The tzdata name Etc/GMT+1 uses "east is negative",
	// but Go and most other systems use "east is positive".
	// So GMT+1 corresponds to -3600 in the Go zone, not +3600.
	name, offset := Now().In(loc).Zone()
	// The zone abbreviation is "-01" since tzdata-2016g, and "GMT+1"

		"",
	},
	// host subcomponent; IPv6 address with zone identifier in RFC 6874
	{
		"http://[fe80::1%25en0]/", // alphanum zone identifier
		&URL{
			Scheme: "http",
			Host:   "[fe80::1%en0]",
			Path:   "/",
		},
		"",
	},
	// host and port subcomponents; IPv6 address with zone identifier in RFC 6874
	{
		"http://[fe80::1%25en0]:8080/", // alphanum zone identifier
		&URL{
			Scheme: "http",