applyFileOrFail(t, ns.Name(), jsonGatewayFile)
				stdout, _, err := istioctlWithStderr(t, istioCtl, ns.Name(), true, jsonOutput)
				expectJSONMessages(t, g, stdout, msg.ReferencedResourceNotFound)
				g.Expect(err).To(BeNil())
			})

			t.NewSubTest("invalid file does not output error in stdout").Run(func(t framework.TestContext) {
				stdout, _, err := istioctlWithStderr(t, istioCtl, ns.Name(), false, invalidExtensionFile, jsonOutput)