how to use python to test a json based api

test_api.py

import unittest, httplib, urllib, json

class ApiTestCase(unittest.TestCase):
	def setUp(self):
		self.conn = httplib.HTTPConnection('localhost', 5000)

	def tearDown(self):
		if self.conn is not None: self.conn.close()

	def get(self, path='/'):
		self.conn.request('GET', path)
		return self.conn.getresponse()

	def post(self, path='/', params={}):
		params = urllib.urlencode(params)	
		headers = {"Content-type": "application/x-www-form-urlencoded", "Accept": "application/json"}
		self.conn.request('POST', path, params, headers)
		return self.conn.getresponse()

	def test_index(self):
		res = self.get('/')
		self.assertEqual(res.status, 200)
		data = json.loads(res.read())
		self.assertEqual(data['hello'], 'world')

	def test_add_user(self):
		params = {'name': 'jerry', 'age': '20', 'sex': 'male'}
		res1 = self.post('/add', params)
		self.assertEqual(res1.status, 200)

		# get find user
		res2 = self.get('/find_user?name=' + 'jerry')
		self.assertEqual(res2.status, 200)
		data = json.loads(res2.read())
		self.assertEqual(data['name'], 'jerry')
		self.assertEqual(data['age'], 20)
		self.assertEqual(data['sex'], 'male')

if __name__ == '__main__': unittest.main()