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cpython/Lib/test/test_wsgiref.py
Michiel W. Beijen 022ba6d161
gh-102247: http: support rfc9110 status codes (GH-117611) 
rfc9110 obsoletes the earlier rfc 7231. This document also includes some
status codes that were previously only used for WebDAV and assigns more
generic names to these status codes.

ref: https://www.rfc-editor.org/rfc/rfc9110.html#name-changes-from-rfc-7231

- http.HTTPStatus.CONTENT_TOO_LARGE (413, previously
  REQUEST_ENTITY_TOO_LARGE)
- http.HTTPStatus.URI_TOO_LONG (414, previously REQUEST_URI_TOO_LONG)
- http.HTTPStatus.RANGE_NOT_SATISFYABLE (416, previously
  REQUEST_RANGE_NOT_SATISFYABLE)
- http.HTTPStatus.UNPROCESSABLE_CONTENT (422, previously
  UNPROCESSABLE_ENTITY)

The new constants are added to http.HTTPStatus and the old constant names are
preserved for backwards compatibility.

References in documentation to the obsoleted rfc 7231 are updated
2024-04-13 07:33:20 -07:00

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from unittest import mock
from test import support
from test.support import socket_helper
from test.test_httpservers import NoLogRequestHandler
from unittest import TestCase
from wsgiref.util import setup_testing_defaults
from wsgiref.headers import Headers
from wsgiref.handlers import BaseHandler, BaseCGIHandler, SimpleHandler
from wsgiref import util
from wsgiref.validate import validator
from wsgiref.simple_server import WSGIServer, WSGIRequestHandler
from wsgiref.simple_server import make_server
from http.client import HTTPConnection
from io import StringIO, BytesIO, BufferedReader
from socketserver import BaseServer
from platform import python_implementation
import os
import re
import signal
import sys
import threading
import unittest
class MockServer(WSGIServer):
"""Non-socket HTTP server"""
def __init__(self, server_address, RequestHandlerClass):
BaseServer.__init__(self, server_address, RequestHandlerClass)
self.server_bind()
def server_bind(self):
host, port = self.server_address
self.server_name = host
self.server_port = port
self.setup_environ()
class MockHandler(WSGIRequestHandler):
"""Non-socket HTTP handler"""
def setup(self):
self.connection = self.request
self.rfile, self.wfile = self.connection
def finish(self):
pass
def hello_app(environ,start_response):
start_response("200 OK", [
('Content-Type','text/plain'),
('Date','Mon, 05 Jun 2006 18:49:54 GMT')
])
return [b"Hello, world!"]
def header_app(environ, start_response):
start_response("200 OK", [
('Content-Type', 'text/plain'),
('Date', 'Mon, 05 Jun 2006 18:49:54 GMT')
])
return [';'.join([
environ['HTTP_X_TEST_HEADER'], environ['QUERY_STRING'],
environ['PATH_INFO']
]).encode('iso-8859-1')]
def run_amock(app=hello_app, data=b"GET / HTTP/1.0\n\n"):
server = make_server("", 80, app, MockServer, MockHandler)
inp = BufferedReader(BytesIO(data))
out = BytesIO()
olderr = sys.stderr
err = sys.stderr = StringIO()
try:
server.finish_request((inp, out), ("127.0.0.1",8888))
finally:
sys.stderr = olderr
return out.getvalue(), err.getvalue()
def compare_generic_iter(make_it, match):
"""Utility to compare a generic iterator with an iterable
This tests the iterator using iter()/next().
'make_it' must be a function returning a fresh
iterator to be tested (since this may test the iterator twice)."""
it = make_it()
if not iter(it) is it:
raise AssertionError
for item in match:
if not next(it) == item:
raise AssertionError
try:
next(it)
except StopIteration:
pass
else:
raise AssertionError("Too many items from .__next__()", it)
class IntegrationTests(TestCase):
def check_hello(self, out, has_length=True):
pyver = (python_implementation() + "/" +
sys.version.split()[0])
self.assertEqual(out,
("HTTP/1.0 200 OK\r\n"
"Server: WSGIServer/0.2 " + pyver +"\r\n"
"Content-Type: text/plain\r\n"
"Date: Mon, 05 Jun 2006 18:49:54 GMT\r\n" +
(has_length and "Content-Length: 13\r\n" or "") +
"\r\n"
"Hello, world!").encode("iso-8859-1")
)
def test_plain_hello(self):
out, err = run_amock()
self.check_hello(out)
def test_environ(self):
request = (
b"GET /p%61th/?query=test HTTP/1.0\n"
b"X-Test-Header: Python test \n"
b"X-Test-Header: Python test 2\n"
b"Content-Length: 0\n\n"
)
out, err = run_amock(header_app, request)
self.assertEqual(
out.splitlines()[-1],
b"Python test,Python test 2;query=test;/path/"
)
def test_request_length(self):
out, err = run_amock(data=b"GET " + (b"x" * 65537) + b" HTTP/1.0\n\n")
self.assertEqual(out.splitlines()[0],
b"HTTP/1.0 414 URI Too Long")
def test_validated_hello(self):
out, err = run_amock(validator(hello_app))
# the middleware doesn't support len(), so content-length isn't there
self.check_hello(out, has_length=False)
def test_simple_validation_error(self):
def bad_app(environ,start_response):
start_response("200 OK", ('Content-Type','text/plain'))
return ["Hello, world!"]
out, err = run_amock(validator(bad_app))
self.assertTrue(out.endswith(
b"A server error occurred. Please contact the administrator."
))
self.assertEqual(
err.splitlines()[-2],
"AssertionError: Headers (('Content-Type', 'text/plain')) must"
" be of type list: <class 'tuple'>"
)
def test_status_validation_errors(self):
def create_bad_app(status):
def bad_app(environ, start_response):
start_response(status, [("Content-Type", "text/plain; charset=utf-8")])
return [b"Hello, world!"]
return bad_app
tests = [
('200', 'AssertionError: Status must be at least 4 characters'),
('20X OK', 'AssertionError: Status message must begin w/3-digit code'),
('200OK', 'AssertionError: Status message must have a space after code'),
]
for status, exc_message in tests:
with self.subTest(status=status):
out, err = run_amock(create_bad_app(status))
self.assertTrue(out.endswith(
b"A server error occurred. Please contact the administrator."
))
self.assertEqual(err.splitlines()[-2], exc_message)
def test_wsgi_input(self):
def bad_app(e,s):
e["wsgi.input"].read()
s("200 OK", [("Content-Type", "text/plain; charset=utf-8")])
return [b"data"]
out, err = run_amock(validator(bad_app))
self.assertTrue(out.endswith(
b"A server error occurred. Please contact the administrator."
))
self.assertEqual(
err.splitlines()[-2], "AssertionError"
)
def test_bytes_validation(self):
def app(e, s):
s("200 OK", [
("Content-Type", "text/plain; charset=utf-8"),
("Date", "Wed, 24 Dec 2008 13:29:32 GMT"),
])
return [b"data"]
out, err = run_amock(validator(app))
self.assertTrue(err.endswith('"GET / HTTP/1.0" 200 4\n'))
ver = sys.version.split()[0].encode('ascii')
py = python_implementation().encode('ascii')
pyver = py + b"/" + ver
self.assertEqual(
b"HTTP/1.0 200 OK\r\n"
b"Server: WSGIServer/0.2 "+ pyver + b"\r\n"
b"Content-Type: text/plain; charset=utf-8\r\n"
b"Date: Wed, 24 Dec 2008 13:29:32 GMT\r\n"
b"\r\n"
b"data",
out)
def test_cp1252_url(self):
def app(e, s):
s("200 OK", [
("Content-Type", "text/plain"),
("Date", "Wed, 24 Dec 2008 13:29:32 GMT"),
])
# PEP3333 says environ variables are decoded as latin1.
# Encode as latin1 to get original bytes
return [e["PATH_INFO"].encode("latin1")]
out, err = run_amock(
validator(app), data=b"GET /\x80%80 HTTP/1.0")
self.assertEqual(
[
b"HTTP/1.0 200 OK",
mock.ANY,
b"Content-Type: text/plain",
b"Date: Wed, 24 Dec 2008 13:29:32 GMT",
b"",
b"/\x80\x80",
],
out.splitlines())
def test_interrupted_write(self):
# BaseHandler._write() and _flush() have to write all data, even if
# it takes multiple send() calls. Test this by interrupting a send()
# call with a Unix signal.
pthread_kill = support.get_attribute(signal, "pthread_kill")
def app(environ, start_response):
start_response("200 OK", [])
return [b'\0' * support.SOCK_MAX_SIZE]
class WsgiHandler(NoLogRequestHandler, WSGIRequestHandler):
pass
server = make_server(socket_helper.HOST, 0, app, handler_class=WsgiHandler)
self.addCleanup(server.server_close)
interrupted = threading.Event()
def signal_handler(signum, frame):
interrupted.set()
original = signal.signal(signal.SIGUSR1, signal_handler)
self.addCleanup(signal.signal, signal.SIGUSR1, original)
received = None
main_thread = threading.get_ident()
def run_client():
http = HTTPConnection(*server.server_address)
http.request("GET", "/")
with http.getresponse() as response:
response.read(100)
# The main thread should now be blocking in a send() system
# call. But in theory, it could get interrupted by other
# signals, and then retried. So keep sending the signal in a
# loop, in case an earlier signal happens to be delivered at
# an inconvenient moment.
while True:
pthread_kill(main_thread, signal.SIGUSR1)
if interrupted.wait(timeout=float(1)):
break
nonlocal received
received = len(response.read())
http.close()
background = threading.Thread(target=run_client)
background.start()
server.handle_request()
background.join()
self.assertEqual(received, support.SOCK_MAX_SIZE - 100)
class UtilityTests(TestCase):
def checkShift(self,sn_in,pi_in,part,sn_out,pi_out):
env = {'SCRIPT_NAME':sn_in,'PATH_INFO':pi_in}
util.setup_testing_defaults(env)
self.assertEqual(util.shift_path_info(env),part)
self.assertEqual(env['PATH_INFO'],pi_out)
self.assertEqual(env['SCRIPT_NAME'],sn_out)
return env
def checkDefault(self, key, value, alt=None):
# Check defaulting when empty
env = {}
util.setup_testing_defaults(env)
if isinstance(value, StringIO):
self.assertIsInstance(env[key], StringIO)
elif isinstance(value,BytesIO):
self.assertIsInstance(env[key],BytesIO)
else:
self.assertEqual(env[key], value)
# Check existing value
env = {key:alt}
util.setup_testing_defaults(env)
self.assertIs(env[key], alt)
def checkCrossDefault(self,key,value,**kw):
util.setup_testing_defaults(kw)
self.assertEqual(kw[key],value)
def checkAppURI(self,uri,**kw):
util.setup_testing_defaults(kw)
self.assertEqual(util.application_uri(kw),uri)
def checkReqURI(self,uri,query=1,**kw):
util.setup_testing_defaults(kw)
self.assertEqual(util.request_uri(kw,query),uri)
def checkFW(self,text,size,match):
def make_it(text=text,size=size):
return util.FileWrapper(StringIO(text),size)
compare_generic_iter(make_it,match)
it = make_it()
self.assertFalse(it.filelike.closed)
for item in it:
pass
self.assertFalse(it.filelike.closed)
it.close()
self.assertTrue(it.filelike.closed)
def testSimpleShifts(self):
self.checkShift('','/', '', '/', '')
self.checkShift('','/x', 'x', '/x', '')
self.checkShift('/','', None, '/', '')
self.checkShift('/a','/x/y', 'x', '/a/x', '/y')
self.checkShift('/a','/x/', 'x', '/a/x', '/')
def testNormalizedShifts(self):
self.checkShift('/a/b', '/../y', '..', '/a', '/y')
self.checkShift('', '/../y', '..', '', '/y')
self.checkShift('/a/b', '//y', 'y', '/a/b/y', '')
self.checkShift('/a/b', '//y/', 'y', '/a/b/y', '/')
self.checkShift('/a/b', '/./y', 'y', '/a/b/y', '')
self.checkShift('/a/b', '/./y/', 'y', '/a/b/y', '/')
self.checkShift('/a/b', '///./..//y/.//', '..', '/a', '/y/')
self.checkShift('/a/b', '///', '', '/a/b/', '')
self.checkShift('/a/b', '/.//', '', '/a/b/', '')
self.checkShift('/a/b', '/x//', 'x', '/a/b/x', '/')
self.checkShift('/a/b', '/.', None, '/a/b', '')
def testDefaults(self):
for key, value in [
('SERVER_NAME','127.0.0.1'),
('SERVER_PORT', '80'),
('SERVER_PROTOCOL','HTTP/1.0'),
('HTTP_HOST','127.0.0.1'),
('REQUEST_METHOD','GET'),
('SCRIPT_NAME',''),
('PATH_INFO','/'),
('wsgi.version', (1,0)),
('wsgi.run_once', 0),
('wsgi.multithread', 0),
('wsgi.multiprocess', 0),
('wsgi.input', BytesIO()),
('wsgi.errors', StringIO()),
('wsgi.url_scheme','http'),
]:
self.checkDefault(key,value)
def testCrossDefaults(self):
self.checkCrossDefault('HTTP_HOST',"foo.bar",SERVER_NAME="foo.bar")
self.checkCrossDefault('wsgi.url_scheme',"https",HTTPS="on")
self.checkCrossDefault('wsgi.url_scheme',"https",HTTPS="1")
self.checkCrossDefault('wsgi.url_scheme',"https",HTTPS="yes")
self.checkCrossDefault('wsgi.url_scheme',"http",HTTPS="foo")
self.checkCrossDefault('SERVER_PORT',"80",HTTPS="foo")
self.checkCrossDefault('SERVER_PORT',"443",HTTPS="on")
def testGuessScheme(self):
self.assertEqual(util.guess_scheme({}), "http")
self.assertEqual(util.guess_scheme({'HTTPS':"foo"}), "http")
self.assertEqual(util.guess_scheme({'HTTPS':"on"}), "https")
self.assertEqual(util.guess_scheme({'HTTPS':"yes"}), "https")
self.assertEqual(util.guess_scheme({'HTTPS':"1"}), "https")
def testAppURIs(self):
self.checkAppURI("http://127.0.0.1/")
self.checkAppURI("http://127.0.0.1/spam", SCRIPT_NAME="/spam")
self.checkAppURI("http://127.0.0.1/sp%E4m", SCRIPT_NAME="/sp\xe4m")
self.checkAppURI("http://spam.example.com:2071/",
HTTP_HOST="spam.example.com:2071", SERVER_PORT="2071")
self.checkAppURI("http://spam.example.com/",
SERVER_NAME="spam.example.com")
self.checkAppURI("http://127.0.0.1/",
HTTP_HOST="127.0.0.1", SERVER_NAME="spam.example.com")
self.checkAppURI("https://127.0.0.1/", HTTPS="on")
self.checkAppURI("http://127.0.0.1:8000/", SERVER_PORT="8000",
HTTP_HOST=None)
def testReqURIs(self):
self.checkReqURI("http://127.0.0.1/")
self.checkReqURI("http://127.0.0.1/spam", SCRIPT_NAME="/spam")
self.checkReqURI("http://127.0.0.1/sp%E4m", SCRIPT_NAME="/sp\xe4m")
self.checkReqURI("http://127.0.0.1/spammity/spam",
SCRIPT_NAME="/spammity", PATH_INFO="/spam")
self.checkReqURI("http://127.0.0.1/spammity/sp%E4m",
SCRIPT_NAME="/spammity", PATH_INFO="/sp\xe4m")
self.checkReqURI("http://127.0.0.1/spammity/spam;ham",
SCRIPT_NAME="/spammity", PATH_INFO="/spam;ham")
self.checkReqURI("http://127.0.0.1/spammity/spam;cookie=1234,5678",
SCRIPT_NAME="/spammity", PATH_INFO="/spam;cookie=1234,5678")
self.checkReqURI("http://127.0.0.1/spammity/spam?say=ni",
SCRIPT_NAME="/spammity", PATH_INFO="/spam",QUERY_STRING="say=ni")
self.checkReqURI("http://127.0.0.1/spammity/spam?s%E4y=ni",
SCRIPT_NAME="/spammity", PATH_INFO="/spam",QUERY_STRING="s%E4y=ni")
self.checkReqURI("http://127.0.0.1/spammity/spam", 0,
SCRIPT_NAME="/spammity", PATH_INFO="/spam",QUERY_STRING="say=ni")
def testFileWrapper(self):
self.checkFW("xyz"*50, 120, ["xyz"*40,"xyz"*10])
def testHopByHop(self):
for hop in (
"Connection Keep-Alive Proxy-Authenticate Proxy-Authorization "
"TE Trailers Transfer-Encoding Upgrade"
).split():
for alt in hop, hop.title(), hop.upper(), hop.lower():
self.assertTrue(util.is_hop_by_hop(alt))
# Not comprehensive, just a few random header names
for hop in (
"Accept Cache-Control Date Pragma Trailer Via Warning"
).split():
for alt in hop, hop.title(), hop.upper(), hop.lower():
self.assertFalse(util.is_hop_by_hop(alt))
class HeaderTests(TestCase):
def testMappingInterface(self):
test = [('x','y')]
self.assertEqual(len(Headers()), 0)
self.assertEqual(len(Headers([])),0)
self.assertEqual(len(Headers(test[:])),1)
self.assertEqual(Headers(test[:]).keys(), ['x'])
self.assertEqual(Headers(test[:]).values(), ['y'])
self.assertEqual(Headers(test[:]).items(), test)
self.assertIsNot(Headers(test).items(), test) # must be copy!
h = Headers()
del h['foo'] # should not raise an error
h['Foo'] = 'bar'
for m in h.__contains__, h.get, h.get_all, h.__getitem__:
self.assertTrue(m('foo'))
self.assertTrue(m('Foo'))
self.assertTrue(m('FOO'))
self.assertFalse(m('bar'))
self.assertEqual(h['foo'],'bar')
h['foo'] = 'baz'
self.assertEqual(h['FOO'],'baz')
self.assertEqual(h.get_all('foo'),['baz'])
self.assertEqual(h.get("foo","whee"), "baz")
self.assertEqual(h.get("zoo","whee"), "whee")
self.assertEqual(h.setdefault("foo","whee"), "baz")
self.assertEqual(h.setdefault("zoo","whee"), "whee")
self.assertEqual(h["foo"],"baz")
self.assertEqual(h["zoo"],"whee")
def testRequireList(self):
self.assertRaises(TypeError, Headers, "foo")
def testExtras(self):
h = Headers()
self.assertEqual(str(h),'\r\n')
h.add_header('foo','bar',baz="spam")
self.assertEqual(h['foo'], 'bar; baz="spam"')
self.assertEqual(str(h),'foo: bar; baz="spam"\r\n\r\n')
h.add_header('Foo','bar',cheese=None)
self.assertEqual(h.get_all('foo'),
['bar; baz="spam"', 'bar; cheese'])
self.assertEqual(str(h),
'foo: bar; baz="spam"\r\n'
'Foo: bar; cheese\r\n'
'\r\n'
)
class ErrorHandler(BaseCGIHandler):
"""Simple handler subclass for testing BaseHandler"""
# BaseHandler records the OS environment at import time, but envvars
# might have been changed later by other tests, which trips up
# HandlerTests.testEnviron().
os_environ = dict(os.environ.items())
def __init__(self,**kw):
setup_testing_defaults(kw)
BaseCGIHandler.__init__(
self, BytesIO(), BytesIO(), 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):
# testEnviron() can produce long error message
maxDiff = 80 * 50
def testEnviron(self):
os_environ = {
# very basic environment
'HOME': '/my/home',
'PATH': '/my/path',
'LANG': 'fr_FR.UTF-8',
# set some WSGI variables
'SCRIPT_NAME': 'test_script_name',
'SERVER_NAME': 'test_server_name',
}
with support.swap_attr(TestHandler, 'os_environ', os_environ):
# override X and HOME variables
handler = TestHandler(X="Y", HOME="/override/home")
handler.setup_environ()
# Check that wsgi_xxx attributes are copied to wsgi.xxx variables
# of handler.environ
for attr in ('version', 'multithread', 'multiprocess', 'run_once',
'file_wrapper'):
self.assertEqual(getattr(handler, 'wsgi_' + attr),
handler.environ['wsgi.' + attr])
# Test handler.environ as a dict
expected = {}
setup_testing_defaults(expected)
# Handler inherits os_environ variables which are not overridden
# by SimpleHandler.add_cgi_vars() (SimpleHandler.base_env)
for key, value in os_environ.items():
if key not in expected:
expected[key] = value
expected.update({
# X doesn't exist in os_environ
"X": "Y",
# HOME is overridden by TestHandler
'HOME': "/override/home",
# overridden by setup_testing_defaults()
"SCRIPT_NAME": "",
"SERVER_NAME": "127.0.0.1",
# set by BaseHandler.setup_environ()
'wsgi.input': handler.get_stdin(),
'wsgi.errors': handler.get_stderr(),
'wsgi.version': (1, 0),
'wsgi.run_once': False,
'wsgi.url_scheme': 'http',
'wsgi.multithread': True,
'wsgi.multiprocess': True,
'wsgi.file_wrapper': util.FileWrapper,
})
self.assertDictEqual(handler.environ, expected)
def testCGIEnviron(self):
h = BaseCGIHandler(None,None,None,{})
h.setup_environ()
for key in 'wsgi.url_scheme', 'wsgi.input', 'wsgi.errors':
self.assertIn(key, h.environ)
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'].encode('iso-8859-1')]
def trivial_app2(e,s):
s('200 OK',[])(e['wsgi.url_scheme'].encode('iso-8859-1'))
return []
def trivial_app3(e,s):
s('200 OK',[])
return ['\u0442\u0435\u0441\u0442'.encode("utf-8")]
def trivial_app4(e,s):
# Simulate a response to a HEAD request
s('200 OK',[('Content-Length', '12345')])
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").encode("iso-8859-1"))
h = TestHandler()
h.run(trivial_app2)
self.assertEqual(h.stdout.getvalue(),
("Status: 200 OK\r\n"
"\r\n"
"http").encode("iso-8859-1"))
h = TestHandler()
h.run(trivial_app3)
self.assertEqual(h.stdout.getvalue(),
b'Status: 200 OK\r\n'
b'Content-Length: 8\r\n'
b'\r\n'
b'\xd1\x82\xd0\xb5\xd1\x81\xd1\x82')
h = TestHandler()
h.run(trivial_app4)
self.assertEqual(h.stdout.getvalue(),
b'Status: 200 OK\r\n'
b'Content-Length: 12345\r\n'
b'\r\n')
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").encode("iso-8859-1"))
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" % (h.error_status,len(h.error_body))).encode('iso-8859-1')
+ h.error_body)
self.assertIn("AssertionError", h.stderr.getvalue())
def testErrorAfterOutput(self):
MSG = b"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".encode("iso-8859-1")+MSG))
self.assertIn("AssertionError", h.stderr.getvalue())
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"
).encode("iso-8859-1")
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(),b"")
else:
self.assertTrue(
re.match((stdpat%(version,sw)).encode("iso-8859-1"),
h.stdout.getvalue()),
((stdpat%(version,sw)).encode("iso-8859-1"),
h.stdout.getvalue())
)
def testBytesData(self):
def app(e, s):
s("200 OK", [
("Content-Type", "text/plain; charset=utf-8"),
])
return [b"data"]
h = TestHandler()
h.run(app)
self.assertEqual(b"Status: 200 OK\r\n"
b"Content-Type: text/plain; charset=utf-8\r\n"
b"Content-Length: 4\r\n"
b"\r\n"
b"data",
h.stdout.getvalue())
def testCloseOnError(self):
side_effects = {'close_called': False}
MSG = b"Some output has been sent"
def error_app(e,s):
s("200 OK",[])(MSG)
class CrashyIterable(object):
def __iter__(self):
while True:
yield b'blah'
raise AssertionError("This should be caught by handler")
def close(self):
side_effects['close_called'] = True
return CrashyIterable()
h = ErrorHandler()
h.run(error_app)
self.assertEqual(side_effects['close_called'], True)
def testPartialWrite(self):
written = bytearray()
class PartialWriter:
def write(self, b):
partial = b[:7]
written.extend(partial)
return len(partial)
def flush(self):
pass
environ = {"SERVER_PROTOCOL": "HTTP/1.0"}
h = SimpleHandler(BytesIO(), PartialWriter(), sys.stderr, environ)
msg = "should not do partial writes"
with self.assertWarnsRegex(DeprecationWarning, msg):
h.run(hello_app)
self.assertEqual(b"HTTP/1.0 200 OK\r\n"
b"Content-Type: text/plain\r\n"
b"Date: Mon, 05 Jun 2006 18:49:54 GMT\r\n"
b"Content-Length: 13\r\n"
b"\r\n"
b"Hello, world!",
written)
def testClientConnectionTerminations(self):
environ = {"SERVER_PROTOCOL": "HTTP/1.0"}
for exception in (
ConnectionAbortedError,
BrokenPipeError,
ConnectionResetError,
):
with self.subTest(exception=exception):
class AbortingWriter:
def write(self, b):
raise exception
stderr = StringIO()
h = SimpleHandler(BytesIO(), AbortingWriter(), stderr, environ)
h.run(hello_app)
self.assertFalse(stderr.getvalue())
def testDontResetInternalStateOnException(self):
class CustomException(ValueError):
pass
# We are raising CustomException here to trigger an exception
# during the execution of SimpleHandler.finish_response(), so
# we can easily test that the internal state of the handler is
# preserved in case of an exception.
class AbortingWriter:
def write(self, b):
raise CustomException
stderr = StringIO()
environ = {"SERVER_PROTOCOL": "HTTP/1.0"}
h = SimpleHandler(BytesIO(), AbortingWriter(), stderr, environ)
h.run(hello_app)
self.assertIn("CustomException", stderr.getvalue())
# Test that the internal state of the handler is preserved.
self.assertIsNotNone(h.result)
self.assertIsNotNone(h.headers)
self.assertIsNotNone(h.status)
self.assertIsNotNone(h.environ)
if __name__ == "__main__":
unittest.main()
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