},
		{
			name:    "feature disabled, both pods use MatchLabelKeys fields",
			enabled: false,
			oldPodSpec: &api.PodSpec{
				TopologySpreadConstraints: []api.TopologySpreadConstraint{
					{MatchLabelKeys: []string{"foo"}},
				},
			},
			podSpec: &api.PodSpec{
				TopologySpreadConstraints: []api.TopologySpreadConstraint{
					{MatchLabelKeys: []string{"foo"}},
				},
			},

					{key: "zone", value: "zone2"}:  3,
					{key: "node", value: "node-x"}: 2,
					{key: "node", value: "node-y"}: 1,
				},
			},
			enableNodeInclusionPolicy: true,
		},
		{
			name: "matchLabelKeys ignored when feature gate disabled",
			pod: st.MakePod().Name("p").Label("foo", "").Label("bar", "").
				SpreadConstraint(1, "zone", v1.DoNotSchedule, fooSelector, nil, nil, nil, []string{"bar"}).
				Obj(),

	}
	if in.NamespaceSelector != nil {
		in, out := &in.NamespaceSelector, &out.NamespaceSelector
		*out = new(v1.LabelSelector)
		(*in).DeepCopyInto(*out)
	}
	if in.MatchLabelKeys != nil {
		in, out := &in.MatchLabelKeys, &out.MatchLabelKeys
		*out = make([]string, len(*in))
		copy(*out, *in)
	}
	if in.MismatchLabelKeys != nil {
		in, out := &in.MismatchLabelKeys, &out.MismatchLabelKeys

	}
	if in.NamespaceSelector != nil {
		in, out := &in.NamespaceSelector, &out.NamespaceSelector
		*out = new(metav1.LabelSelector)
		(*in).DeepCopyInto(*out)
	}
	if in.MatchLabelKeys != nil {
		in, out := &in.MatchLabelKeys, &out.MatchLabelKeys
		*out = make([]string, len(*in))
		copy(*out, *in)
	}
	if in.MismatchLabelKeys != nil {
		in, out := &in.MismatchLabelKeys, &out.MismatchLabelKeys