},
				},
			},
			err: nil,
		},
	}

	for _, test := range tests {
		t.Run(test.name, func(t *testing.T) {
			ipvs := test.existingIPVS
			gracefulTerminationManager := NewGracefulTerminationManager(ipvs)

			err := gracefulTerminationManager.GracefulDeleteRS(test.vs, test.rs)
			if err != test.err {
				t.Logf("actual err: %v", err)
				t.Logf("expected err: %v", test.err)

type GracefulTerminationManager struct {
	rsList graceTerminateRSList
	ipvs   utilipvs.Interface
}

// NewGracefulTerminationManager create a gracefulTerminationManager to manage ipvs rs graceful termination work
func NewGracefulTerminationManager(ipvs utilipvs.Interface) *GracefulTerminationManager {
	l := make(map[string]*listItem)
	return &GracefulTerminationManager{
		rsList: graceTerminateRSList{

		ipset:                 ipset,
		nodePortAddresses:     nodePortAddresses,
		networkInterfacer:     proxyutil.RealNetwork{},
		gracefuldeleteManager: NewGracefulTerminationManager(ipvs),
		logger:                logger,
	}
	// initialize ipsetList with all sets we needed
	proxier.ipsetList = make(map[string]*IPSet)
	for _, is := range ipsetInfo {

		ipsetList:             ipsetList,
		nodePortAddresses:     proxyutil.NewNodePortAddresses(ipFamily, nil),
		networkInterfacer:     proxyutiltest.NewFakeNetwork(),
		gracefuldeleteManager: NewGracefulTerminationManager(ipvs),
		ipFamily:              ipFamily,
	}
	p.setInitialized(true)
	p.syncRunner = async.NewBoundedFrequencyRunner("test-sync-runner", p.syncProxyRules, 0, time.Minute, 1)
	return p
}