helmtest.InstallIstio(t, cs, h, overrideValuesFile, previousVersion, true, isAmbient, nsConfig)
		helmtest.VerifyInstallation(t, cs, nsConfig, true, isAmbient, "")

		_, oldClient, oldServer := sanitycheck.SetupTrafficTest(t, t, "")
		sanitycheck.RunTrafficTestClientServer(t, oldClient, oldServer)

		overrideValuesFile = helmtest.GetValuesOverrides(t, s.Image.Hub, s.Image.Tag, s.Image.Variant, "", isAmbient)