diff --git a/tests/uptime_kuma_test_case.py b/tests/uptime_kuma_test_case.py
index e6dacec..2c63df5 100644
--- a/tests/uptime_kuma_test_case.py
+++ b/tests/uptime_kuma_test_case.py
@@ -1,7 +1,7 @@
+import json
 import unittest
 
-from uptime_kuma_api import UptimeKumaApi
-
+from uptime_kuma_api import UptimeKumaApi, Event, MonitorType
 
 token = None
 
@@ -12,22 +12,32 @@ class UptimeKumaTestCase(unittest.TestCase):
     username = "admin"
     password = "secret123"
 
-    @classmethod
-    def setUpClass(cls):
-        cls.api = UptimeKumaApi(cls.url)
+    def setUp(self):
+        self.api = UptimeKumaApi(self.url)
 
         global token
         if not token:
-            if cls.api.need_setup():
-                cls.api.setup(cls.username, cls.password)
-            r = cls.api.login(cls.username, cls.password)
+            if self.api.need_setup():
+                self.api.setup(self.username, self.password)
+            r = self.api.login(self.username, self.password)
             token = r["token"]
 
-        cls.api.login_by_token(token)
+        self.api.login_by_token(token)
 
-    @classmethod
-    def tearDownClass(cls):
-        cls.api.disconnect()
+        data = {
+            "version": "1.17.1",
+            "notificationList": [],
+            "monitorList": [],
+            "proxyList": []
+        }
+        data_str = json.dumps(data)
+        r = self.api.upload_backup(data_str, "overwrite")
+        self.assertEqual(r["msg"], "Backup successfully restored.")
+
+        self.api._event_data[Event.MONITOR_LIST] = {}
+
+    def tearDown(self):
+        self.api.disconnect()
 
     def compare(self, superset, subset):
         self.assertTrue(subset.items() <= superset.items())
diff --git a/uptime_kuma_api/api.py b/uptime_kuma_api/api.py
index 2573d31..60e4274 100644
--- a/uptime_kuma_api/api.py
+++ b/uptime_kuma_api/api.py
@@ -366,6 +366,7 @@ def _check_arguments_proxy(kwargs):
 
 class UptimeKumaApi(object):
     def __init__(self, url):
+        self.url = url
         self.sio = socketio.Client()
 
         self._event_data: dict = {
@@ -396,7 +397,7 @@ class UptimeKumaApi(object):
         self.sio.on(Event.INFO, self._event_info)
         self.sio.on(Event.CERT_INFO, self._event_cert_info)
 
-        self.connect(url)
+        self.connect()
 
     def _get_event_data(self, event):
         monitor_events = [Event.AVG_PING, Event.UPTIME, Event.HEARTBEAT_LIST, Event.IMPORTANT_HEARTBEAT_LIST, Event.CERT_INFO, Event.HEARTBEAT]
@@ -489,9 +490,12 @@ class UptimeKumaApi(object):
 
     # connection
 
-    def connect(self, url: str):
-        url = url.rstrip("/")
-        self.sio.connect(f'{url}/socket.io/')
+    def connect(self):
+        url = self.url.rstrip("/")
+        try:
+            self.sio.connect(f'{url}/socket.io/')
+        except:
+            print("")
 
     def disconnect(self):
         self.sio.disconnect()