t.Run("validate configs", func(t *testing.T) {
			if tt.skipValidation {
				t.Skip()
			}
			xdstest.ValidateClusters(t, sim.Clusters)
			xdstest.ValidateListeners(t, sim.Listeners)
			xdstest.ValidateRouteConfigurations(t, sim.Routes)
		})
	}
	if tt.name != "" {
		t.Run(tt.name, runTest)
	} else {
		runTest(t)
	}
}

func createGateway(name, namespace string, servers ...string) string {

						Configs:           istio,
						KubernetesObjects: kubeo,
					})
					sim := simulation.NewSimulation(t, s, s.SetupProxy(tt.proxy))
					xdstest.ValidateListeners(t, sim.Listeners)
					xdstest.ValidateRouteConfigurations(t, sim.Routes)
					r := xdstest.ExtractRouteConfigurations(sim.Routes)
					vh := r[tt.routeName]
					exp := tt.expected
					if variant == "httproute" && tt.expectedGateway != nil {