private static TreeMap<Long, User> loadtestDataInMemory() throws IOException {
		System.out.println("Start Loading Test Data");

		TreeMap<Long, User> userMap = new TreeMap<Long, User>();
		BufferedReader fileReader = new BufferedReader(new FileReader(testDataDirectory));

		while (fileReader.ready()) {
			String line = fileReader.readLine();
			String data = parseData(line);
			long userID = parseID(line);
			userMap.put(userID, new User(data));
			newSet.add(userID);
		}

		fileReader.close();

		System.out.println("Finish Loading Test Data");

		return userMap;
	}