diff --git a/.gitignore b/.gitignore
index e8f045b1..4cd33da8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,4 +2,5 @@ __pycache__
 .idea
 logs
 .venv
-.vscode
\ No newline at end of file
+.vscode
+.pytest_cache
\ No newline at end of file
diff --git a/appmanage/api/service/db.py b/appmanage/api/service/db.py
index c7072f7d..f09c4b3d 100644
--- a/appmanage/api/service/db.py
+++ b/appmanage/api/service/db.py
@@ -1,9 +1,8 @@
-from fastapi import FastAPI
-from pydantic import BaseModel
+import sqlite3
+
 from api.exception.command_exception import CommandException
 from api.utils import const
-from api.model.user import User
-import sqlite3
+
 
 def dict_factory(cursor, row):
     d = {}
diff --git a/appmanage/api/service/manage.py b/appmanage/api/service/manage.py
index b02504c5..22311421 100644
--- a/appmanage/api/service/manage.py
+++ b/appmanage/api/service/manage.py
@@ -1,33 +1,19 @@
-from ast import Constant
-import os
-import io
-import sys
-import platform
-import shutil
-import time
-import subprocess
 import requests
 import json
-import datetime
-import socket
 import re
-from threading import Thread
+
+from redis import Redis
+from rq import Queue
+from rq.registry import StartedJobRegistry, FinishedJobRegistry, DeferredJobRegistry, FailedJobRegistry, ScheduledJobRegistry, CanceledJobRegistry
+
 from api.utils import shell_execute, docker, const
 from api.model.app import App
 from api.service import db
-from api.model.response import Response
 from api.model.config import Config
 from api.model.status_reason import StatusReason
 from api.utils.log import myLogger
-from redis import Redis
-from rq import Queue, Worker, Connection
-from rq.registry import StartedJobRegistry, FinishedJobRegistry, DeferredJobRegistry, FailedJobRegistry, ScheduledJobRegistry, CanceledJobRegistry
 from api.exception.command_exception import CommandException
-from apscheduler.schedulers.background import BackgroundScheduler
-from apscheduler.triggers.date import DateTrigger
-from apscheduler.triggers.cron import CronTrigger
-from apscheduler.triggers.interval import IntervalTrigger
-from apscheduler.events import EVENT_SCHEDULER_PAUSED, EVENT_SCHEDULER_RESUMED,EVENT_SCHEDULER_STARTED,EVENT_SCHEDULER_SHUTDOWN
+
 
 # 指定 Redis 容器的主机名和端口
 redis_conn = Redis(host='websoft9-redis', port=6379)
@@ -141,16 +127,18 @@ def AppStoreUpdate():
         myLogger.info_logger("You click update appstore, but not need to update")
 
 # 获取 update info
-def get_update_list():
+def get_update_list(url: str=None):
     local_path = '/data/apps/websoft9/version.json'
-    local_version = "0"
+    artifact_url = const.ARTIFACT_URL
+    if url:
+        artifact_url = url
     
     try:
         op = shell_execute.execute_command_output_all("cat " + local_path)['result']
         local_version = json.loads(op)['VERSION']
     except:
         local_version = "0.0.0"
-    version_cmd = "wget -O version.json " + const.ARTIFACT_URL + "/version.json  && cat version.json"
+    version_cmd = f"wget -O version.json {artifact_url}/version.json  && cat version.json"
     latest = shell_execute.execute_command_output_all(version_cmd)['result']
     version = json.loads(latest)['VERSION']
     ret = {}
@@ -161,8 +149,8 @@ def get_update_list():
 
     if compared_version(local_version, version) == -1:
         ret['update'] = True
-        cmd = "wget -O CHANGELOG.md  " + const.ARTIFACT_URL + "/CHANGELOG.md  && head -n 20 CHANGELOG.md " 
-        change_log_contents = shell_execute.execute_command_output_all(cmd)['result']
+        cmd = f"wget -O CHANGELOG.md {artifact_url}/CHANGELOG.md  && head -n 20 CHANGELOG.md"
+        change_log_contents = shell_execute.execute_command_output(cmd)
         change_log = change_log_contents.split('## ')[1].split('\n')
         date = change_log[0].split()[-1]
         for change in change_log[1:]:
diff --git a/appmanage/api/utils/docker.py b/appmanage/api/utils/docker.py
index bca2b28a..cbce18b2 100644
--- a/appmanage/api/utils/docker.py
+++ b/appmanage/api/utils/docker.py
@@ -1,9 +1,6 @@
-import os, io, sys, platform, shutil, time, json, datetime, psutil
-import re, docker, requests
-from api.utils import shell_execute
-from dotenv import load_dotenv, find_dotenv
-import dotenv
-from pathlib import Path
+import json, psutil
+import re
+
 from api.utils.log import myLogger
 from api.utils import shell_execute, const
 from api.exception.command_exception import CommandException
diff --git a/appmanage/api/utils/files.py b/appmanage/api/utils/files.py
index 53eed1e7..25044b06 100644
--- a/appmanage/api/utils/files.py
+++ b/appmanage/api/utils/files.py
@@ -3,7 +3,6 @@ from api.utils.helper import Singleton
 
 
 # This class is add/modify/list/delete item to item=value(键值对) model settings file
-__all__ = ['settings']
 
 class SettingsFile(object):
 
diff --git a/appmanage/api/utils/shell_execute.py b/appmanage/api/utils/shell_execute.py
index 7aa7a2ee..889544e5 100644
--- a/appmanage/api/utils/shell_execute.py
+++ b/appmanage/api/utils/shell_execute.py
@@ -1,5 +1,6 @@
 #!/usr/bin/python3
-import os, io, sys, platform, shutil, time, subprocess, json, datetime
+import subprocess
+
 from api.utils.log import myLogger
 from api.exception.command_exception import CommandException
 from api.utils import const
@@ -26,11 +27,11 @@ def execute_command_output_all(cmd_str):
         
     if process.returncode == 0 and 'Fail' not in process.stdout and 'fail' not in process.stdout and 'Error' not in process.stdout and 'error' not in process.stdout:
 
-       return {"code": "0", "result": process.stdout,}
+       return {"code": "0", "result": process.stdout}
     else:
        myLogger.info_logger("Failed to execute cmd, output failed result")
        myLogger.info_logger(process)
-       raise CommandException(const.ERROR_SERVER_COMMAND,"Docker returns the original error", process.stderr)
+       raise CommandException(const.ERROR_SERVER_COMMAND, "Docker returns the original error", process.stderr)
 
 
 
diff --git a/appmanage/api/v1/api.py b/appmanage/api/v1/api.py
index c8430e37..ce9ad256 100644
--- a/appmanage/api/v1/api.py
+++ b/appmanage/api/v1/api.py
@@ -1,6 +1,6 @@
 from fastapi import APIRouter
 
-from api.v1.routers import health, apps
+from .routers import health, apps
 
 
 def get_api():
diff --git a/appmanage/api/v1/routers/apps.py b/appmanage/api/v1/routers/apps.py
index 61f377b5..61eedcee 100644
--- a/appmanage/api/v1/routers/apps.py
+++ b/appmanage/api/v1/routers/apps.py
@@ -1,15 +1,12 @@
-from typing import Optional, List
+from typing import Optional
 
-from fastapi import APIRouter, status, Depends, Query, Request
-from pydantic import BaseModel, Field
+from fastapi import APIRouter, Query, Request
 from starlette.responses import JSONResponse
-import os, io, sys, platform, shutil, time, subprocess, json, datetime
 
-from api.model.app import App
 from api.model.response import Response
 from api.service import manage, db
-from api.utils import shell_execute, const
 from api.utils.log import myLogger
+from api.utils import const
 from api.exception.command_exception import CommandException
 from api.settings.settings import settings
 
diff --git a/appmanage/main.py b/appmanage/main.py
index 33000e6b..79eae111 100644
--- a/appmanage/main.py
+++ b/appmanage/main.py
@@ -13,7 +13,6 @@ from fastapi.openapi.docs import (
 import api.v1.api as api_router_v1
 
 from api.utils.log import myLogger
-from api.utils import shell_execute
 from api.settings.settings import settings
 
 
diff --git a/appmanage/requirements.txt b/appmanage/requirements.txt
index 267299d0..d1d8c062 100644
--- a/appmanage/requirements.txt
+++ b/appmanage/requirements.txt
@@ -5,4 +5,6 @@ apscheduler
 docker
 psutil
 gunicorn
-python-dotenv
\ No newline at end of file
+python-dotenv
+pytest
+httpx
\ No newline at end of file
diff --git a/appmanage/test_main.py b/appmanage/test_main.py
new file mode 100644
index 00000000..a484758c
--- /dev/null
+++ b/appmanage/test_main.py
@@ -0,0 +1,16 @@
+from unittest.mock import patch
+
+from fastapi.testclient import TestClient
+
+
+from .main import app
+
+client = TestClient(app)
+
+# current not used, because the project layout is not right.
+
+@patch("api.v1.routers.apps.manage")
+def test_app_update_list(manage):
+    manage.get_update_list.return_value = {'date': '', 'content': ''}
+    response = client.get("/AppUpdateList")
+    assert response.status_code == 200