template: "This EnvoyFilter does not have a priority and has a relative patch operation (NSTERT_BEFORE/AFTER, REPLACE, MERGE, DELETE) and proxyVersion set which can cause the EnvoyFilter not to be applied during an upgrade....

			pversion := &model.IstioVersion{
				Major: tt.fields.Major,
				Minor: tt.fields.Minor,
				Patch: tt.fields.Patch,
			}
			if got := pversion.Compare(tt.args.inv); got != tt.want {
				t.Errorf("ProxyVersion.Compare() = %v, want %v", got, tt.want)
			}
		})
	}
}

func Test_parseIstioVersion(t *testing.T) {
	type args struct {
		ver string
	}
	tests := []struct {
		name string
		args args

	clusterID          string                // Cluster in which proxy is running.
	proxyID            string                // Identifier that uniquely identifies a proxy.
	proxyVersion       string                // Version of Proxy.
	proxyType          model.NodeType        // Indicates whether the proxy is sidecar or gateway.
	sidecarScope       *model.SidecarScope   // Computed sidecar for the proxy.

							Filter: &networking.EnvoyFilter_ListenerMatch_FilterMatch{Name: "filter1"},
						},
					},
				},
				Proxy: &networking.EnvoyFilter_ProxyMatch{
					ProxyVersion: `^1\.[2-9](.*?)$`,
				},
			},
			Patch: &networking.EnvoyFilter_Patch{
				Operation: networking.EnvoyFilter_Patch_INSERT_BEFORE,
				Value:     buildPatchStruct(`{"name":"filter0"}`),
			},
		},
		{

	// Description: This EnvoyFilter does not have a priority and has a relative patch operation (NSTERT_BEFORE/AFTER, REPLACE, MERGE, DELETE) and proxyVersion set which can cause the EnvoyFilter not to be applied during an upgrade. Using the INSERT_FIRST or ADD option or setting the priority may help in ensuring the EnvoyFilter is applied correctly.

		}
		sort.SliceStable(services, func(i, j int) bool {
			return services[i].Hostname <= services[j].Hostname
		})
		routeCache = &istio_route.Cache{
			RouteName:               routeName,
			ProxyVersion:            node.Metadata.IstioVersion,
			ClusterID:               string(node.Metadata.ClusterID),
			DNSDomain:               node.DNSDomain,
			DNSCapture:              bool(node.Metadata.DNSCapture),

                              description: Match on the node metadata supplied by
                                a proxy when connecting to Istio Pilot.
                              type: object
                            proxyVersion:
                              description: A regular expression in golang regex format
                                (RE2) that can be used to select proxies using a specific

                              description: Match on the node metadata supplied by
                                a proxy when connecting to Istio Pilot.
                              type: object
                            proxyVersion:
                              description: A regular expression in golang regex format
                                (RE2) that can be used to select proxies using a specific