for _, tc := range testCases {
				t.NewSubTest(tc.name).Run(func(t framework.TestContext) {
					newTLSGatewayDestinationRule(t, apps.External.All, "SIMPLE", tc.credentialToUse)
					newTLSGatewayTest(t).
						Run(func(t framework.TestContext, from echo.Instance, to echo.Target) {
							callOpt := newTLSGatewayCallOpts(to, host, tc.statusCode, tc.useGateway)
							from.CallOrFail(t, callOpt)
						})
				})