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from __future__ import nested_scopes # Backward compat for 2.1
from unittest import TestCase, TestSuite, makeSuite
from wsgiref.util import setup_testing_defaults
from wsgiref.headers import Headers
from wsgiref.handlers import BaseHandler, BaseCGIHandler
from StringIO import StringIO
import re
class ErrorHandler(BaseCGIHandler):
"""Simple handler subclass for testing BaseHandler"""
def __init__(self,**kw):
setup_testing_defaults(kw)
BaseCGIHandler.__init__(
self, StringIO(''), StringIO(), StringIO(), kw,
multithread=True, multiprocess=True
)
class TestHandler(ErrorHandler):
"""Simple handler subclass for testing BaseHandler, w/error passthru"""
def handle_error(self):
raise # for testing, we want to see what's happening
class HandlerTests(TestCase):
def checkEnvironAttrs(self, handler):
env = handler.environ
for attr in [
'version','multithread','multiprocess','run_once','file_wrapper'
]:
if attr=='file_wrapper' and handler.wsgi_file_wrapper is None:
continue
self.assertEqual(getattr(handler,'wsgi_'+attr),env['wsgi.'+attr])
def checkOSEnviron(self,handler):
empty = {}; setup_testing_defaults(empty)
env = handler.environ
from os import environ
for k,v in environ.items():
if not empty.has_key(k):
self.assertEqual(env[k],v)
for k,v in empty.items():
self.failUnless(env.has_key(k))
def testEnviron(self):
h = TestHandler(X="Y")
h.setup_environ()
self.checkEnvironAttrs(h)
self.checkOSEnviron(h)
self.assertEqual(h.environ["X"],"Y")
def testCGIEnviron(self):
h = BaseCGIHandler(None,None,None,{})
h.setup_environ()
for key in 'wsgi.url_scheme', 'wsgi.input', 'wsgi.errors':
assert h.environ.has_key(key)
def testScheme(self):
h=TestHandler(HTTPS="on"); h.setup_environ()
self.assertEqual(h.environ['wsgi.url_scheme'],'https')
h=TestHandler(); h.setup_environ()
self.assertEqual(h.environ['wsgi.url_scheme'],'http')
def testAbstractMethods(self):
h = BaseHandler()
for name in [
'_flush','get_stdin','get_stderr','add_cgi_vars'
]:
self.assertRaises(NotImplementedError, getattr(h,name))
self.assertRaises(NotImplementedError, h._write, "test")
def testContentLength(self):
# Demo one reason iteration is better than write()... ;)
def trivial_app1(e,s):
s('200 OK',[])
return [e['wsgi.url_scheme']]
def trivial_app2(e,s):
s('200 OK',[])(e['wsgi.url_scheme'])
return []
h = TestHandler()
h.run(trivial_app1)
self.assertEqual(h.stdout.getvalue(),
"Status: 200 OK\r\n"
"Content-Length: 4\r\n"
"\r\n"
"http")
h = TestHandler()
h.run(trivial_app2)
self.assertEqual(h.stdout.getvalue(),
"Status: 200 OK\r\n"
"\r\n"
"http")
def testBasicErrorOutput(self):
def non_error_app(e,s):
s('200 OK',[])
return []
def error_app(e,s):
raise AssertionError("This should be caught by handler")
h = ErrorHandler()
h.run(non_error_app)
self.assertEqual(h.stdout.getvalue(),
"Status: 200 OK\r\n"
"Content-Length: 0\r\n"
"\r\n")
self.assertEqual(h.stderr.getvalue(),"")
h = ErrorHandler()
h.run(error_app)
self.assertEqual(h.stdout.getvalue(),
"Status: %s\r\n"
"Content-Type: text/plain\r\n"
"Content-Length: %d\r\n"
"\r\n%s" % (h.error_status,len(h.error_body),h.error_body))
self.failUnless(h.stderr.getvalue().find("AssertionError")<>-1)
def testErrorAfterOutput(self):
MSG = "Some output has been sent"
def error_app(e,s):
s("200 OK",[])(MSG)
raise AssertionError("This should be caught by handler")
h = ErrorHandler()
h.run(error_app)
self.assertEqual(h.stdout.getvalue(),
"Status: 200 OK\r\n"
"\r\n"+MSG)
self.failUnless(h.stderr.getvalue().find("AssertionError")<>-1)
def testHeaderFormats(self):
def non_error_app(e,s):
s('200 OK',[])
return []
stdpat = (
r"HTTP/%s 200 OK\r\n"
r"Date: \w{3}, [ 0123]\d \w{3} \d{4} \d\d:\d\d:\d\d GMT\r\n"
r"%s" r"Content-Length: 0\r\n" r"\r\n"
)
shortpat = (
"Status: 200 OK\r\n" "Content-Length: 0\r\n" "\r\n"
)
for ssw in "FooBar/1.0", None:
sw = ssw and "Server: %s\r\n" % ssw or ""
for version in "1.0", "1.1":
for proto in "HTTP/0.9", "HTTP/1.0", "HTTP/1.1":
h = TestHandler(SERVER_PROTOCOL=proto)
h.origin_server = False
h.http_version = version
h.server_software = ssw
h.run(non_error_app)
self.assertEqual(shortpat,h.stdout.getvalue())
h = TestHandler(SERVER_PROTOCOL=proto)
h.origin_server = True
h.http_version = version
h.server_software = ssw
h.run(non_error_app)
if proto=="HTTP/0.9":
self.assertEqual(h.stdout.getvalue(),"")
else:
self.failUnless(
re.match(stdpat%(version,sw), h.stdout.getvalue()),
(stdpat%(version,sw), h.stdout.getvalue())
)
TestClasses = (
HandlerTests,
)
def test_suite():
return TestSuite([makeSuite(t,'test') for t in TestClasses])
|
