},
	}

	return affinity
}

// GetTargetNodeName get the target node name of DaemonSet pods. If `.spec.NodeName` is not empty (nil),
// return `.spec.NodeName`; otherwise, retrieve node name of pending pods from NodeAffinity. Return error
// if failed to retrieve node name from `.spec.NodeName` and NodeAffinity.
func GetTargetNodeName(pod *v1.Pod) (string, error) {
	if len(pod.Spec.NodeName) != 0 {

						Name:      "pod4",
						Namespace: "default",
					},
					Spec: v1.PodSpec{},
				},
				expectedErr: true,
			},
		}

		for _, test := range tests {
			got, err := GetTargetNodeName(test.pod)
			if test.expectedErr != (err != nil) {
				t.Errorf("Unexpected error, expectedErr: %v, err: %v", test.expectedErr, err)
			} else if !test.expectedErr {
				if test.nodeName != got {

	})
	// mark one of the old pods that is on a node without an updated pod as unready
	setPodReadiness(t, manager, false, 1, func(pod *v1.Pod) bool {
		nodeName, err := util.GetTargetNodeName(pod)
		if err != nil {
			t.Fatal(err)
		}
		return pod.Labels[apps.ControllerRevisionHashLabelKey] != hash && len(currentPods[nodeName]) == 0
	})

			// store by the kubelet or the Pod GC. The DS controller doesn't have
			// anything else to do with it.
			continue
		}
		nodeName, err := util.GetTargetNodeName(pod)
		if err != nil {
			logger.V(4).Info("Failed to get target node name of Pod in DaemonSet",
				"pod", klog.KObj(pod), "daemonset", klog.KObj(ds))
			continue
		}

		if ready {
			if c := podutil.GetPodReadyCondition(pod.Status); c != nil {
				readyLast = c.LastTransitionTime.Time.Add(time.Duration(ds.Spec.MinReadySeconds) * time.Second)
			}
		}
		nodeName, _ := util.GetTargetNodeName(pod)

		lines = append(lines, fmt.Sprintf("node=%s current=%-5t ready=%-5t age=%-4d pod=%s now=%d available=%d",
			nodeName,
			hash == pod.Labels[apps.ControllerRevisionHashLabelKey],
			ready,
			now.Unix(),