@Test
  public void getToOutputBody() throws Exception {
    handler = new RequestHandler() {

      @Override
      public void handle(Request request, HttpServletResponse response) {
        response.setStatus(HTTP_OK);
        try {
          response.getWriter().print("hello world");
        } catch (IOException e) {
          fail();
        }
      }
    };
    AtomicReference<String> body = new AtomicReference<String>(null);
    get(url).body(body);
    assertEquals("hello world", body.get());
  }
Make a GET request and get the body using an {@link AtomicReference}

@throws Exception
lib/src/test/java/com/github/kevinsawicki/http/HttpRequestTest.java