1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
|
import asyncio
import socket
import unittest
from aiohttp import web, request
class TestWebMiddlewareFunctional(unittest.TestCase):
def setUp(self):
self.handler = None
self.loop = asyncio.new_event_loop()
asyncio.set_event_loop(None)
def tearDown(self):
if self.handler:
self.loop.run_until_complete(self.handler.finish_connections())
self.loop.close()
def find_unused_port(self):
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind(('127.0.0.1', 0))
port = s.getsockname()[1]
s.close()
return port
@asyncio.coroutine
def create_server(self, method, path, handler, *middlewares):
app = web.Application(loop=self.loop, middlewares=middlewares)
app.router.add_route(method, path, handler)
port = self.find_unused_port()
self.handler = app.make_handler(debug=True)
srv = yield from self.loop.create_server(self.handler, '127.0.0.1',
port)
url = "http://127.0.0.1:{}".format(port) + path
self.addCleanup(srv.close)
return app, srv, url
def test_middleware_modifies_response(self):
@asyncio.coroutine
def handler(request):
return web.Response(body=b'OK')
@asyncio.coroutine
def middleware_factory(app, handler):
def middleware(request):
resp = yield from handler(request)
self.assertEqual(200, resp.status)
resp.set_status(201)
resp.text = resp.text + '[MIDDLEWARE]'
return resp
return middleware
@asyncio.coroutine
def go():
_, _, url = yield from self.create_server('GET', '/', handler,
middleware_factory)
resp = yield from request('GET', url, loop=self.loop)
self.assertEqual(201, resp.status)
txt = yield from resp.text()
self.assertEqual('OK[MIDDLEWARE]', txt)
self.loop.run_until_complete(go())
def test_middleware_handles_exception(self):
@asyncio.coroutine
def handler(request):
raise RuntimeError('Error text')
@asyncio.coroutine
def middleware_factory(app, handler):
def middleware(request):
with self.assertRaises(RuntimeError) as ctx:
yield from handler(request)
return web.Response(status=501,
text=str(ctx.exception) + '[MIDDLEWARE]')
return middleware
@asyncio.coroutine
def go():
_, _, url = yield from self.create_server('GET', '/', handler,
middleware_factory)
resp = yield from request('GET', url, loop=self.loop)
self.assertEqual(501, resp.status)
txt = yield from resp.text()
self.assertEqual('Error text[MIDDLEWARE]', txt)
self.loop.run_until_complete(go())
def test_middleware_chain(self):
@asyncio.coroutine
def handler(request):
return web.Response(text='OK')
def make_factory(num):
@asyncio.coroutine
def factory(app, handler):
def middleware(request):
resp = yield from handler(request)
resp.text = resp.text + '[{}]'.format(num)
return resp
return middleware
return factory
@asyncio.coroutine
def go():
_, _, url = yield from self.create_server('GET', '/', handler,
make_factory(1),
make_factory(2))
resp = yield from request('GET', url, loop=self.loop)
self.assertEqual(200, resp.status)
txt = yield from resp.text()
self.assertEqual('OK[2][1]', txt)
self.loop.run_until_complete(go())
|
