OpenStack中給wsgi程序寫單元測試的方法

在 OpenStack 中, 針對web應用, 有三種方法來寫單元測試

1) 使用webob生成模擬的request

• from __future__ import print_function
• import webob
• import testtools
• def hello_world(env, start_response):
• if env['PATH_INFO'] != '/':
• start_response('404 Not Found', [('Content-Type', 'text/plain')])
• return ['Not Found\r\n']
• start_response('200 OK', [('Content-Type', 'text/plain')])
• return ['hello world!']
• class WsgiAppTestCase(testtools.TestCase):
• def test_hello_world_with_webob(self):
• resp = webob.Request.blank('/').get_response(hello_world)
• print("resp=%s" % (resp))
• self.assertEqual(resp.status_code, 200)
• self.assertEqual(resp.body, "hello world!")

2) 使用webtest生成模擬的request

• from __future__ import print_function
• import httplib2
• import socket
• import webob
• import webtest
• import testtools
• def hello_world(env, start_response):
• if env['PATH_INFO'] != '/':
• start_response('404 Not Found', [('Content-Type', 'text/plain')])
• return ['Not Found\r\n']
• start_response('200 OK', [('Content-Type', 'text/plain')])
• return ['hello world!']
• class WsgiAppTestCase(testtools.TestCase):
• def test_hello_world_with_webtest(self):
• app = webtest.TestApp(hello_world)
• resp = app.get('/')
• print("resp=%s" % (resp))
• self.assertEqual(resp.status_code, 200)
• self.assertEqual(resp.body, "hello world!")

3) 啟動一個wsgi server, 並發送真實的 HTTP請求

這種辦法最復雜, 需要以下步驟

• 調用eventlet包, 開啟monkey_patch模式
• 使用eventlet包, 創建一個socket, 並在127.0.0.1:8080上做監聽
• 使用eventlet包, 創建一個wsgi server
• 使用httplib2包, 發送一個HTTP數據包給server

• from __future__ import print_function
• import httplib2
• import socket
• import testtools
• def hello_world(env, start_response):
• if env['PATH_INFO'] != '/':
• start_response('404 Not Found', [('Content-Type', 'text/plain')])
• return ['Not Found\r\n']
• start_response('200 OK', [('Content-Type', 'text/plain')])
• return ['hello world!']
• class WsgiAppTestCase(testtools.TestCase):
• def test_hello_world_with_eventlet(self):
• import eventlet
• eventlet.monkey_patch(os=False)
• bind_addr = ("127.0.0.1","8080")
• try:
• info = socket.getaddrinfo(bind_addr[0],
• bind_addr[1],
• socket.AF_UNSPEC,
• socket.SOCK_STREAM)[0]
• family = info[0]
• bind_addr = info[-1]
• except Exception:
• family = socket.AF_INET
• sock = eventlet.listen(bind_addr, family)
• wsgi_kwargs = {
• 'func': eventlet.wsgi.server,
• 'sock': sock,
• 'site': hello_world,
• 'protocol': eventlet.wsgi.HttpProtocol,
• 'debug': False
• }
• server = eventlet.spawn(**wsgi_kwargs)
• client = httplib2.Http()
• resp, body = client.request(
• "http://127.0.0.1:8080", "get", headers=None, body=None)
• print("resp=%s, body=%s" % (resp, body))
• self.assertEqual(resp.status, 200)
• self.assertEqual(body, "hello world!")
• server.kill()

在Ubuntu 12.10 上安裝部署Openstack http://www.linuxidc.com/Linux/2013-08/88184.htm

Ubuntu 12.04 OpenStack Swift單節點部署手冊 http://www.linuxidc.com/Linux/2013-08/88182.htm

OpenStack雲計算快速入門教程 http://www.linuxidc.com/Linux/2013-08/88186.htm

企業部署OpenStack：該做與不該做的事 http://www.linuxidc.com/Linux/2013-09/90428.htm

CentOS 6.5 x64bit 快速安裝OpenStack http://www.linuxidc.com/Linux/2014-06/103775.htm