// This timestamp is to be used instead of LastProbeTime stored in Condition. We do this
	// to avoid the problem with time skew across the cluster.
	now func() metav1.Time

	enterPartialDisruptionFunc func(nodeNum int) float32
	enterFullDisruptionFunc    func(nodeNum int) float32
	computeZoneStateFunc       func(nodeConditions []*v1.NodeCondition) (int, ZoneState)

	knownNodeSet map[string]*v1.Node

				testUnhealthyThreshold,
				testNodeMonitorGracePeriod,
				testNodeStartupGracePeriod,
				testNodeMonitorPeriod)
			nodeController.recorder = testutil.NewFakeRecorder()
			nodeController.enterPartialDisruptionFunc = func(nodeNum int) float32 {
				return testRateLimiterQPS
			}
			nodeController.enterFullDisruptionFunc = func(nodeNum int) float32 {
				return testRateLimiterQPS
			}