diff --git a/.gitignore b/.gitignore
new file mode 100644
index 00000000..58c55ee7
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,9 @@
+*.pyc
+__pycache__
+.DS_Store
+*/tmp/*
+build/*
+dist/*
+*.egg-info
+.python-version
+logs/%
\ No newline at end of file
diff --git a/test/__init__.py b/test/__init__.py
new file mode 100644
index 00000000..91d07df5
--- /dev/null
+++ b/test/__init__.py
@@ -0,0 +1,2 @@
+from gevent import monkey
+monkey.patch_all()
\ No newline at end of file
diff --git a/test/api_server.py b/test/api_server.py
new file mode 100644
index 00000000..a99d92f7
--- /dev/null
+++ b/test/api_server.py
@@ -0,0 +1,48 @@
+import json
+from flask import Flask
+from flask import request, make_response
+
+app = Flask(__name__)
+
+""" storage all users' data
+data structure:
+    users_dict = {
+        'uid1': {
+            'uid': 'uid1',
+            'name': 'name1',
+            'password': 'pwd1'
+        },
+        'uid2': {
+            'uid': 'uid2',
+            'name': 'name2',
+            'password': 'pwd2'
+        }
+    }
+"""
+users_dict = {}
+
+@app.route('/api/user/clear')
+def clear_users():
+    users_dict.clear()
+    return "ok"
+
+@app.route('/api/user/add', methods=['POST'])
+def add_user():
+    user = request.get_json()
+    users_dict[user["uid"]] = user
+    return "ok"
+
+@app.route('/api/user/<int:uid>')
+def get_user(uid):
+    user = users_dict.get(uid, {})
+    response = make_response(json.dumps(user))
+    response.headers["Content-Type"] = "application/json"
+    return response
+
+@app.route('/api/user/<int:uid>', methods=['DELETE'])
+def delete_user(uid):
+    user = users_dict.pop(uid, None)
+    if user:
+        return "ok"
+    else:
+        return "not_existed"
diff --git a/test/test_apiserver.py b/test/test_apiserver.py
new file mode 100644
index 00000000..18b89c52
--- /dev/null
+++ b/test/test_apiserver.py
@@ -0,0 +1,94 @@
+import gevent
+import gevent.pywsgi
+import requests
+import unittest
+from . import api_server
+
+class TestApiServer(unittest.TestCase):
+    """
+    Test case class that sets up an HTTP server which can be used within the tests
+    """
+    def setUp(self):
+        super(TestApiServer, self).setUp()
+        self._api_server = gevent.pywsgi.WSGIServer(("127.0.0.1", 0), api_server.app, log=None)
+        gevent.spawn(lambda: self._api_server.serve_forever())
+        gevent.sleep(0.01)
+        self.host = "http://127.0.0.1:%i" % self._api_server.server_port
+
+    def tearDown(self):
+        super(TestApiServer, self).tearDown()
+        self._api_server.stop_accepting()
+        self._api_server.stop()
+
+    def clear_users(self):
+        url = "%s/api/user/clear" % self.host
+        resp = requests.get(url)
+        return resp
+
+    def add_user(self, uid, name, password):
+        url = "%s/api/user/add" % self.host
+        data = {
+            'uid': uid,
+            'name': name,
+            'password': password
+        }
+        resp = requests.post(url, json=data)
+        return resp
+
+    def test_clear_users(self):
+        resp = self.clear_users()
+        self.assertEqual(200, resp.status_code)
+        self.assertEqual(resp.text, "ok")
+
+    def test_add_user_not_existed(self):
+        self.clear_users()
+        resp = self.add_user(1000, 'leo', '123456')
+        self.assertEqual(200, resp.status_code)
+        self.assertEqual(resp.text, "ok")
+
+        url = "%s/api/user/1000" % self.host
+        resp = requests.get(url)
+        self.assertEqual(200, resp.status_code)
+        self.assertNotEqual(resp.json(), {})
+
+    def test_add_user_existed(self):
+        self.clear_users()
+        resp = self.add_user(1000, 'leo', '123456')
+        self.assertEqual(200, resp.status_code)
+        self.assertEqual(resp.text, "ok")
+
+        self.add_user(1000, 'leo2', '123456')
+        url = "%s/api/user/1000" % self.host
+        resp = requests.get(url)
+        self.assertEqual(200, resp.status_code)
+        self.assertEqual(resp.json()['name'], 'leo2')
+
+    def test_get_user_not_existed(self):
+        self.clear_users()
+        url = "%s/api/user/1000" % self.host
+        resp = requests.get(url)
+        self.assertEqual(200, resp.status_code)
+        self.assertEqual(resp.json(), {})
+
+    def test_get_user_existed(self):
+        self.clear_users()
+        self.add_user(1000, 'leo', '123456')
+        url = "%s/api/user/1000" % self.host
+        resp = requests.get(url)
+        self.assertEqual(200, resp.status_code)
+        self.assertEqual(resp.json()['name'], 'leo')
+
+    def test_delete_user_not_existed(self):
+        self.clear_users()
+        url = "%s/api/user/1000" % self.host
+        resp = requests.delete(url)
+        self.assertEqual(200, resp.status_code)
+        self.assertEqual(resp.text, "not_existed")
+
+    def test_delete_user_existed(self):
+        self.clear_users()
+        resp = self.add_user(1000, 'leo', '123456')
+        url = "%s/api/user/1000" % self.host
+        resp = requests.delete(url)
+        self.assertEqual(200, resp.status_code)
+        self.assertEqual(resp.text, "ok")