public void testMetadataOneGadget() throws Exception {
registerGadgetsHandler(null);
setupGadgetAdminStore();
setupMockRegistry(Lists.newArrayList("core"));
JSONObject request = makeMetadataRequest(null, null, null, GADGET1_URL);
RpcHandler operation = registry.getRpcHandler(request);
Object responseObj = operation.execute(emptyFormItems, authContext, converter).get();
JSONObject response = new JSONObject(converter.convertToString(responseObj));
JSONObject gadget = response.getJSONObject(GADGET1_URL);
JSONObject iframeUrls = gadget.getJSONObject("iframeUrls");
assertEquals(FakeIframeUriManager.DEFAULT_IFRAME_URI.toString(),