本地可用的test类：修复了使用Nested Class 和 Nested Function不能被pickle的问题。测试全部通过。test_list_naming_instance_online需要配合本地服务（实际已经成功）

FIX TO ISSUE nacos-group#124

Info to
nacos-group#125

Author: runzhi214

test/client_test.py

@@ -11,11 +11,10 @@
 import time
 import shutil
 
-SERVER_1 = "100.69.207.65"
+SERVER_1 = "192.168.0.104"
 SERVER_ADDRESSES = "%s:8848, 100.69.207.66:8848" % SERVER_1
-SERVER_ADDRESSES = "127.0.0.1:8848"
-NAMESPACE = "6cface1f-2f1b-4744-a59d-fd818b91a799"
-NAMESPACE = ""
+SERVER_ADDRESSES = "192.168.0.104:8848"
+NAMESPACE = "28162559-3344-4bec-adc2-cc7dc8fa13f2"
 
 # Set the following values if authentication mode is enabled on the server
 USERNAME = None
@@ -25,6 +24,27 @@
 # Set the following option if http requests need through by proxy
 # client.set_options(proxies={"http":"192.168.56.1:809"})
 
+
+class ShareFakeWatcher:
+    content = None
+    count = 0
+
+
+def test_cb_fake_watcher(args):
+    print(args)
+    ShareFakeWatcher.count += 1
+    ShareFakeWatcher.content = args["content"]
+
+
+class ShareLongPulling:
+    content = None
+
+
+def cb_long_pulling(x):
+    ShareLongPulling.content = x["content"]
+    print(ShareLongPulling.content)
+
+
 class TestClient(unittest.TestCase):
     def test_get_server(self):
         self.assertEqual(client.get_server(), (SERVER_1, 8848))
@@ -57,81 +77,65 @@ def test_fake_watcher(self):
         d = "test"
         g = "DEFAULT_GROUP"
 
-        class Share:
-            content = None
-            count = 0
-
         cache_key = "+".join([d, g, NAMESPACE])
 
-        def test_cb(args):
-            print(args)
-            Share.count += 1
-            Share.content = args["content"]
-
-        client.add_config_watcher(d, g, test_cb)
-        client.add_config_watcher(d, g, test_cb)
-        client.add_config_watcher(d, g, test_cb)
+        client.add_config_watcher(d, g, test_cb_fake_watcher)
+        client.add_config_watcher(d, g, test_cb_fake_watcher)
+        client.add_config_watcher(d, g, test_cb_fake_watcher)
         time.sleep(1)
         client.notify_queue.put((cache_key, "xxx", "md51"))
         time.sleep(1)
-        self.assertEqual(Share.content, "xxx")
-        self.assertEqual(Share.count, 3)
+        self.assertEqual(ShareFakeWatcher.content, "xxx")
+        self.assertEqual(ShareFakeWatcher.count, 3)
 
-        client.remove_config_watcher(d, g, test_cb)
-        Share.count = 0
+        client.remove_config_watcher(d, g, test_cb_fake_watcher)
+        ShareFakeWatcher.count = 0
         client.notify_queue.put((cache_key, "yyy", "md52"))
         time.sleep(1)
-        self.assertEqual(Share.content, "yyy")
-        self.assertEqual(Share.count, 2)
+        self.assertEqual(ShareFakeWatcher.content, "yyy")
+        self.assertEqual(ShareFakeWatcher.count, 2)
 
-        client.remove_config_watcher(d, g, test_cb, True)
-        Share.count = 0
+        client.remove_config_watcher(d, g, test_cb_fake_watcher, True)
+        ShareFakeWatcher.count = 0
         client.notify_queue.put((cache_key, "not effective, no watchers", "md53"))
         time.sleep(1)
-        self.assertEqual(Share.content, "yyy")
-        self.assertEqual(Share.count, 0)
+        self.assertEqual(ShareFakeWatcher.content, "yyy")
+        self.assertEqual(ShareFakeWatcher.count, 0)
 
-        Share.count = 0
-        client.add_config_watcher(d, g, test_cb)
+        ShareFakeWatcher.count = 0
+        client.add_config_watcher(d, g, test_cb_fake_watcher)
         time.sleep(1)
         client.notify_queue.put((cache_key, "zzz", "md54"))
         time.sleep(1)
-        self.assertEqual(Share.content, "zzz")
-        self.assertEqual(Share.count, 1)
+        self.assertEqual(ShareFakeWatcher.content, "zzz")
+        self.assertEqual(ShareFakeWatcher.count, 1)
 
-        Share.count = 0
+        ShareFakeWatcher.count = 0
         client.notify_queue.put((cache_key, "not effective, md5 no changes", "md54"))
         time.sleep(1)
-        self.assertEqual(Share.content, "zzz")
-        self.assertEqual(Share.count, 0)
+        self.assertEqual(ShareFakeWatcher.content, "zzz")
+        self.assertEqual(ShareFakeWatcher.count, 0)
 
     def test_long_pulling(self):
         client2 = nacos.NacosClient(SERVER_ADDRESSES, username=USERNAME, password=PASSWORD)
         d = "test1_pulling"
         g = "Group1"
         g2 = "Group2"
 
-        class Share:
-            content = None
-
-        def cb(x):
-            Share.content = x["content"]
-            print(Share.content)
-
         client2.publish_config(d, g, "test2")
         client2.publish_config(d, g2, "test2")
         time.sleep(0.5)
         # test common
-        client2.add_config_watcher(d, g, cb)
-        client2.add_config_watcher(d, g2, cb)
+        client2.add_config_watcher(d, g, cb_long_pulling)
+        client2.add_config_watcher(d, g2, cb_long_pulling)
         time.sleep(0.5)
         client2.publish_config(d, g, "test")
         client2.publish_config(d, g2, "test")
         time.sleep(1)
-        self.assertEqual(Share.content, "test")
+        self.assertEqual(ShareLongPulling.content, "test")
         client2.publish_config(d, g2, u"test2中文")
         time.sleep(1)
-        self.assertEqual(Share.content, u"test2中文")
+        self.assertEqual(ShareLongPulling.content, u"test2中文")
 
     def test_get_from_failover(self):
         d = "test_fo"
@@ -179,7 +183,7 @@ def test_list_naming_instance_offline(self):
         self.assertEqual(len(client.list_naming_instance("test.service")["hosts"]), 0)
 
     def test_list_naming_instance_online(self):
-        client.add_naming_instance("test.service", "1.0.0.1", 8080, "testCluster2", 0.1, "{}", True, True)
+        client.add_naming_instance("test.service", "127.0.0.1", 9876, "testCluster2", 0.1, "{}", True, True)
         self.assertEqual(len(client.list_naming_instance("test.service")["hosts"]), 1)
 
     def test_get_naming_instance(self):