MultiMap headers = new CaseInsensitiveMultiMap();
headers.add("content-type", "application/x-www-form-urlencoded");
headers.add("content-length", Integer.toString(body.length()));
new YokeTester(yoke).request("POST", "/upload", headers, body, new Handler<Response>() {
@Override
public void handle(Response resp) {
assertEquals(200, resp.getStatusCode());
testComplete();
}