在 Java 中编写单元测试并跳过方法中的某些代码行的最佳实践是什么？

Question

我有java代码只需执行以下步骤：

• 从url获取json响应（我想跳过这个，而是使用预定义的变量进行测试）
• 检查一些条件（我想执行单元测试）
• 执行put方法来终止应用程序使用rest-api（我想跳过这个，因为我不想在测试条件时杀死任何应用程序）

这是我想要执行单元测试的方法：

public void checkYarnApplications() throws IOException {

    // Get json object from yarn rest-api
    ObjectMapper mapper = new ObjectMapper();

    URL getJsonUrl1 = new URL(getUrlAddress());

    Map<String,Object> map1 = mapper.readValue(getJsonUrl1,Map.class);

    JSONObject j = new JSONObject(map1);

    // Initialize stringbuilder to build slack message
    StringBuilder stringBuilder = new StringBuilder();

    // Iterate through number of existing yarn application
    for (int i = 0; i < j.getJSONObject("apps").getJSONArray("app").length(); i++){

        JSONObject name = j.getJSONObject("apps")
                .getJSONArray("app")
                .getJSONObject(i);

        String state = name.get("state").toString();

        // Check if application is in Running state
        if (state.equals("RUNNING")){

            // Get elapsed time for each running application and convert it to hour
            int elapsed_time = name.getInt("elapsedTime")/3600000;
            // Get application name
            String app_name = name.get("name").toString();
            // Get application queue_name
            String queue_name = name.get("queue").toString();
            // Get application user_name
            String user_name = name.get("user").toString();

            // Check if pyspark applications last longer than specified time in config.properties
            if (app_name.startsWith("pyspark-shell") && elapsed_time > getSparkCheckTime()){
                String app_id = name.get("id").toString();
                String infoMessageSpark = "pyspark application " + app_id + " has been killed because it takes longer than " + getSparkCheckTime() + " hours";
                logger.info(infoMessageSpark);
                logger.info(name.toString());
                // Kill yarn application
                URL url = new URL(String.format("%s%s/state?user.name=atlasapp",getUrlAddress(),app_id));
                HttpURLConnection http = (HttpURLConnection)url.openConnection();
                http.setRequestMethod("PUT");
                http.setDoOutput(true);
                http.setRequestProperty("Content-Type", "application/json");

                String data = "{\"state\": \"KILLED\"}";

                byte[] out = data.getBytes(StandardCharsets.UTF_8);

                OutputStream stream = http.getOutputStream();
                stream.write(out);

                System.out.println(http.getResponseCode() + " " + http.getResponseMessage());
                http.disconnect();
                // Add info message to slackmessage string builder
                stringBuilder.append(infoMessageSpark);
                stringBuilder.append("\n");
            }
            // Check if self_bi applications last longer than specified time in config.properties
            else if (!queue_name.equals("yarn-system") && !queue_name.equals("hudi") && !queue_name.equals("hepsistream") &&
                    !app_name.equals("Bzip2Hdfs") && !user_name.equals("spark") && !user_name.equals("yarn-ats") &&
                    !app_name.startsWith("pyspark-shell") && !queue_name.equals("llap") && elapsed_time > getappCheckTime()){
                String app_id = name.get("id").toString();
                String infoMessageSb = queue_name + " application, " + app_id + " has been killed because it takes longer than "
                        + getappCheckTime() + " hours. Elapsed Time:" + elapsed_time;
                logger.info(infoMessageSb);
                logger.info(name.toString());
                // Kill yarn application
                URL url = new URL(String.format("%s%s/state?user.name=atlasapp",getUrlAddress(),app_id));
                HttpURLConnection http = (HttpURLConnection)url.openConnection();
                http.setRequestMethod("PUT");
                http.setDoOutput(true);
                http.setRequestProperty("Content-Type", "application/json");

                String data = "{\"state\": \"KILLED\"}";

                byte[] out = data.getBytes(StandardCharsets.UTF_8);

                OutputStream stream = http.getOutputStream();
                stream.write(out);

                System.out.println(http.getResponseCode() + " " + http.getResponseMessage());
                http.disconnect();
                // Add info message to slackmessage string builder
                stringBuilder.append(infoMessageSb);
                stringBuilder.append("\n");
            }
            // Check if any application except hudi, llap last longer than specified time in config.properties and send them to slack channel
            else if (!queue_name.equals("hudi") && !queue_name.equals("llap") && !queue_name.equals("hepsistream") &&
                    !queue_name.equals("yarn-system") && !user_name.equals("yarn-ats") &&
                    !app_name.startsWith("pyspark-shell") && !app_name.equals("Bzip2Hdfs") && !user_name.equals("spark") &&
                    elapsed_time > getCheckTime()){
                logger.info("Application_id: " + name.get("id").toString() + " is running longer than " +  getCheckTime() + " hours");
                String textMessage ="Elapsed time: " + elapsed_time + " hours" + ", " +
                        "Application_Id: " + name.get("id").toString() + ", " +
                        "Username: " + name.get("user").toString() + ", " +
                        "Queuename:" + name.get("queue").toString() + ", " +
                        "Usage:" + name.get("clusterUsagePercentage").toString();
                stringBuilder.append(textMessage);
                stringBuilder.append("\n");
            }
        }
    }
}

这里我想使用一些预定义的json字符串，它将等于我使用 http 连接作为响应收到的字符串。并且只想检查 if - else-if 条件是否正常工作。如果满足条件，还想跳过某些代码行来终止某些应用程序。所以我只想实现一些assertequal方法来比较infoMessage字符串（您可以在我的代码中看到）。 我找到了一些模拟完整方法的mockito方法，但在这里我想跳过方法内部的一些代码行，但我找不到任何有关此要求的示例。任何帮助和指导将不胜感激。

谢谢。