如何使用URL作为参数测试方法，使用mockito生成json

Question

我正在传递一个服务网址，它将获取一个json。我使用对象映射器将json映射到响应类。我将如何模拟url以在测试用例中调用实际服务？

public String QUOTE_SUMMARY_URL = "http://localhost:8181/omnesys_sb/quote";

@SuppressWarnings("deprecation")
public Quotesummary getQuoteSummary(final String urlString) throws JsonParseException, JsonMappingException, IOException {
    String line, jsonString = null;
    HttpURLConnection httpURLConnection = null;
    ObjectMapper mapper = new ObjectMapper();
    String urlStr = urlString != null ? urlString : QUOTE_SUMMARY_URL;
    try {
        URL url = new URL(urlStr);
        httpURLConnection = (HttpURLConnection) url.openConnection();
        httpURLConnection.setRequestMethod("GET");
        httpURLConnection.setRequestProperty("Accept", "application/json");
        BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(httpURLConnection.getInputStream()));
        StringBuilder stringBuilder = new StringBuilder();
        while ((line = bufferedReader.readLine()) != null) {
            stringBuilder.append(line + '\n');
        }
        jsonString = stringBuilder.toString();
    } catch (MalformedURLException e)   {
        e.printStackTrace();
    } catch (ProtocolException e)   {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        httpURLConnection.disconnect();
    }
    Quotesummary quoteSummary = mapper.readValue(jsonString, Quotesummary.class);
    System.out.println(""+mapper.writerWithDefaultPrettyPrinter().writeValueAsString(quoteSummary));
    return quoteSummary;
}