from django.core.exceptions import ImproperlyConfigured
from django.core.handlers.wsgi import WSGIHandler, WSGIRequest, get_script_name
from django.core.signals import request_finished, request_started
from django.db import close_old_connections, connection
from django.test import (
RequestFactory, SimpleTestCase, TransactionTestCase, override_settings,
)
from django.utils.version import PY37
class HandlerTests(SimpleTestCase):
request_factory = RequestFactory()
def setUp(self):
request_started.disconnect(close_old_connections)
def tearDown(self):
request_started.connect(close_old_connections)
def test_middleware_initialized(self):
handler = WSGIHandler()
self.assertIsNotNone(handler._middleware_chain)
def test_bad_path_info(self):
"""
A non-UTF-8 path populates PATH_INFO with an URL-encoded path and
produces a 404.
"""
environ = self.request_factory.get('/').environ
environ['PATH_INFO'] = '\xed'
handler = WSGIHandler()
response = handler(environ, lambda *a, **k: None)
# The path of the request will be encoded to '/%ED'.
self.assertEqual(response.status_code, 404)
def test_non_ascii_query_string(self):
"""
Non-ASCII query strings are properly decoded (#20530, #22996).
"""
environ = self.request_factory.get('/').environ
raw_query_strings = [
b'want=caf%C3%A9', # This is the proper way to encode 'café'
b'want=caf\xc3\xa9', # UA forgot to quote bytes
b'want=caf%E9', # UA quoted, but not in UTF-8
b'want=caf\xe9', # UA forgot to convert Latin-1 to UTF-8 and to quote (typical of MSIE)
]
got = []
for raw_query_string in raw_query_strings:
# Simulate http.server.BaseHTTPRequestHandler.parse_request handling of raw request
environ['QUERY_STRING'] = str(raw_query_string, 'iso-8859-1')
request = WSGIRequest(environ)
got.append(request.GET['want'])
# %E9 is converted to the unicode replacement character by parse_qsl
self.assertEqual(got, ['café', 'café', 'caf\ufffd', 'café'])
def test_non_ascii_cookie(self):
"""Non-ASCII cookies set in JavaScript are properly decoded (#20557)."""
environ = self.request_factory.get('/').environ
raw_cookie = 'want="café"'.encode('utf-8').decode('iso-8859-1')
environ['HTTP_COOKIE'] = raw_cookie
request = WSGIRequest(environ)
self.assertEqual(request.COOKIES['want'], "café")
def test_invalid_unicode_cookie(self):
"""
Invalid cookie content should result in an absent cookie, but not in a
crash while trying to decode it (#23638).
"""
environ = self.request_factory.get('/').environ
environ['HTTP_COOKIE'] = 'x=W\x03c(h]\x8e'
request = WSGIRequest(environ)
# We don't test COOKIES content, as the result might differ between
# Python version because parsing invalid content became stricter in
# latest versions.
self.assertIsInstance(request.COOKIES, dict)
@override_settings(ROOT_URLCONF='handlers.urls')
def test_invalid_multipart_boundary(self):
"""
Invalid boundary string should produce a "Bad Request" response, not a
server error (#23887).
"""
environ = self.request_factory.post('/malformed_post/').environ
environ['CONTENT_TYPE'] = 'multipart/form-data; boundary=WRONG\x07'
handler = WSGIHandler()
response = handler(environ, lambda *a, **k: None)
# Expect "bad request" response
self.assertEqual(response.status_code, 400)
@override_settings(ROOT_URLCONF='handlers.urls', MIDDLEWARE=[])
class TransactionsPerRequestTests(TransactionTestCase):
available_apps = []
def test_no_transaction(self):
response = self.client.get('/in_transaction/')
self.assertContains(response, 'False')
def test_auto_transaction(self):
old_atomic_requests = connection.settings_dict['ATOMIC_REQUESTS']
try:
connection.settings_dict['ATOMIC_REQUESTS'] = True
response = self.client.get('/in_transaction/')
finally:
connection.settings_dict['ATOMIC_REQUESTS'] = old_atomic_requests
self.assertContains(response, 'True')
def test_no_auto_transaction(self):
old_atomic_requests = connection.settings_dict['ATOMIC_REQUESTS']
try:
connection.settings_dict['ATOMIC_REQUESTS'] = True
response = self.client.get('/not_in_transaction/')
finally:
connection.settings_dict['ATOMIC_REQUESTS'] = old_atomic_requests
self.assertContains(response, 'False')
@override_settings(ROOT_URLCONF='handlers.urls')
class SignalsTests(SimpleTestCase):
def setUp(self):
self.signals = []
self.signaled_environ = None
request_started.connect(self.register_started)
request_finished.connect(self.register_finished)
def tearDown(self):
request_started.disconnect(self.register_started)
request_finished.disconnect(self.register_finished)
def register_started(self, **kwargs):
self.signals.append('started')
self.signaled_environ = kwargs.get('environ')
def register_finished(self, **kwargs):
self.signals.append('finished')
def test_request_signals(self):
response = self.client.get('/regular/')
self.assertEqual(self.signals, ['started', 'finished'])
self.assertEqual(response.content, b"regular content")
self.assertEqual(self.signaled_environ, response.wsgi_request.environ)
def test_request_signals_streaming_response(self):
response = self.client.get('/streaming/')
self.assertEqual(self.signals, ['started'])
self.assertEqual(b''.join(response.streaming_content), b"streaming content")
self.assertEqual(self.signals, ['started', 'finished'])
def empty_middleware(get_response):
pass
@override_settings(ROOT_URLCONF='handlers.urls')
class HandlerRequestTests(SimpleTestCase):
request_factory = RequestFactory()
def test_suspiciousop_in_view_returns_400(self):
response = self.client.get('/suspicious/')
self.assertEqual(response.status_code, 400)
def test_invalid_urls(self):
response = self.client.get('~%A9helloworld')
self.assertEqual(response.status_code, 404)
self.assertEqual(response.context['request_path'], '/~%25A9helloworld' if PY37 else '/%7E%25A9helloworld')
response = self.client.get('d%aao%aaw%aan%aal%aao%aaa%aad%aa/')
self.assertEqual(response.context['request_path'], '/d%25AAo%25AAw%25AAn%25AAl%25AAo%25AAa%25AAd%25AA')
response = self.client.get('/%E2%99%E2%99%A5/')
self.assertEqual(response.context['request_path'], '/%25E2%2599%E2%99%A5/')
response = self.client.get('/%E2%98%8E%E2%A9%E2%99%A5/')
self.assertEqual(response.context['request_path'], '/%E2%98%8E%25E2%25A9%E2%99%A5/')
def test_environ_path_info_type(self):
environ = self.request_factory.get('/%E2%A8%87%87%A5%E2%A8%A0').environ
self.assertIsInstance(environ['PATH_INFO'], str)
def test_handle_accepts_httpstatus_enum_value(self):
def start_response(status, headers):
start_response.status = status
environ = self.request_factory.get('/httpstatus_enum/').environ
WSGIHandler()(environ, start_response)
self.assertEqual(start_response.status, '200 OK')
@override_settings(MIDDLEWARE=['handlers.tests.empty_middleware'])
def test_middleware_returns_none(self):
msg = 'Middleware factory handlers.tests.empty_middleware returned None.'
with self.assertRaisesMessage(ImproperlyConfigured, msg):
self.client.get('/')
def test_no_response(self):
msg = "The view %s didn't return an HttpResponse object. It returned None instead."
tests = (
('/no_response_fbv/', 'handlers.views.no_response'),
('/no_response_cbv/', 'handlers.views.NoResponse.__call__'),
)
for url, view in tests:
with self.subTest(url=url), self.assertRaisesMessage(ValueError, msg % view):
self.client.get(url)
class ScriptNameTests(SimpleTestCase):
def test_get_script_name(self):
# Regression test for #23173
# Test first without PATH_INFO
script_name = get_script_name({'SCRIPT_URL': '/foobar/'})
self.assertEqual(script_name, '/foobar/')
script_name = get_script_name({'SCRIPT_URL': '/foobar/', 'PATH_INFO': '/'})
self.assertEqual(script_name, '/foobar')
def test_get_script_name_double_slashes(self):
"""
WSGI squashes multiple successive slashes in PATH_INFO, get_script_name
should take that into account when forming SCRIPT_NAME (#17133).
"""
script_name = get_script_name({
'SCRIPT_URL': '/mst/milestones//accounts/login//help',
'PATH_INFO': '/milestones/accounts/login/help',
})
self.assertEqual(script_name, '/mst')