How to add test case when post a test case result - rally

Question

The JsonObject addProperty cannot support to add another JsonObject.
The official test shown on below:
#Test
public void shouldConstructTheCorrectUrlWithExtraParam() {
JsonObject body = new JsonObject();
CreateRequest req = new CreateRequest("Defect", body);
req.addParam("foo", "Bar");
Assert.assertEquals(req.toUrl(), "/defect/create.js?foo=Bar&fetch=true");
}
What I need is ???:
public void shouldConstructTheCorrectUrlWithExtraParam() {
JsonObject body = new JsonObject();
body.add("testcase",???)
CreateRequest req = new CreateRequest("testcaseresult", body);
req.addParam("foo", "Bar");
Assert.assertEquals(req.toUrl(), "/defect/create.js?foo=Bar&fetch=true");
}

Answer 1

I did a mistake for adding other JsonObject, it's a ref instead a instance.
Works well code:
public void createTestCaseResult(JsonObject testCaseJsonObject) throws IOException, URISyntaxException {
log.println("createTestCaseResult...");
String testCaseRef = testCaseJsonObject.get("_ref").getAsString();
QueryRequest userRequest = new QueryRequest("user");
userRequest.setFetch(new Fetch("UserName", "Subscription", "DisplayName"));
userRequest.setQueryFilter(new QueryFilter("UserName", "=", "lu.han#technicolor.com"));
QueryResponse userQueryResponse = restApi.query(userRequest);
JsonArray userQueryResults = userQueryResponse.getResults();
JsonElement userQueryElement = userQueryResults.get(0);
JsonObject userQueryObject = userQueryElement.getAsJsonObject();
String userRef = userQueryObject.get("_ref").getAsString();
close();
getRestApi();
Date now = new Date();
String pattern = "yyyy-MM-dd'T'HH:mm:ssZ";
SimpleDateFormat format = new SimpleDateFormat(pattern);
JsonObject newResult = new JsonObject();
newResult.addProperty("Verdict", "Pass");
newResult.addProperty("Build", "2014.01.08.1234567");
newResult.addProperty("Tester", userRef);
newResult.addProperty("Date", format.format(now));
newResult.addProperty("CreationDate", format.format(now));
newResult.addProperty("TestCase", testCaseRef);
newResult.addProperty("Workspace", workspaceRef);
CreateRequest createRequest = new CreateRequest("testcaseresult", newResult);
CreateResponse createResponse = restApi.create(createRequest);
log.println("createTestCaseResult DONE：");
log.println(String.format("Created %s", createResponse.getObject().get("_ref").getAsString()));
}