OpenStack中给wsgi程序写单元测试的方法
OpenStack中给wsgi程序写单元测试的方法
在 OpenStack 中, 针对web应用, 有三种方法来写单元测试
1) 使用webob生成模拟的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生成模拟的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) 启动一个wsgi server, 并发送真实的 HTTP请求
这种办法最复杂, 需要以下步骤
- 调用eventlet包, 开启monkey_patch模式
- 使用eventlet包, 创建一个socket, 并在127.0.0.1:8080上做监听
- 使用eventlet包, 创建一个wsgi server
- 使用httplib2包, 发送一个HTTP数据包给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()
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