// on its own; therfore, the only way to test selector immutability is
	// when the new selector is changed but still matches the existing labels.
	newSelector := getValidGeneratedSelector()
	newSelector.MatchLabels["foo"] = "bar"
	validTolerations := []api.Toleration{{
		Key:      "foo",
		Operator: api.TolerationOpEqual,
		Value:    "bar",
		Effect:   api.TaintEffectPreferNoSchedule,