for i, svc := range services {
			ret[i] = svc.Hostname
		}
		return ret
	}

	for _, tt := range cases {
		t.Run(tt.name, func(t *testing.T) {
			as := convertServices(*tt.current)
			bs := convertServices(*tt.new)
			added, deleted, updated, unchanged := servicesDiff(as, bs)
			for i, item := range []struct {
				hostnames []host.Name
				services  []*model.Service
			}{

			curr:     &updatedSvc,
			prevConv: kube.ConvertService(svc, constants.DefaultClusterLocalDomain, "", nil),
			currConv: kube.ConvertService(updatedSvc, constants.DefaultClusterLocalDomain, "", nil),
			expect:   true,
		},
		testcase{
			name:     "target ports unchanged",
			prev:     &svc,
			curr:     &svc,
			prevConv: kube.ConvertService(svc, constants.DefaultClusterLocalDomain, "", nil),