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django/tests/handlers/tests.py

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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 (
AsyncRequestFactory,
RequestFactory,
SimpleTestCase,
TransactionTestCase,
override_settings,
)
class HandlerTests(SimpleTestCase):
request_factory = RequestFactory()
def setUp(self):
request_started.disconnect(close_old_connections)
self.addCleanup(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 = [
2014-08-20 18:37:33 +00:00
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
# UA forgot to convert Latin-1 to UTF-8 and to quote (typical of
# MSIE).
b"want=caf\xe9",
]
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")
async def test_auto_transaction_async_view(self):
old_atomic_requests = connection.settings_dict["ATOMIC_REQUESTS"]
try:
connection.settings_dict["ATOMIC_REQUESTS"] = True
msg = "You cannot use ATOMIC_REQUESTS with async views."
with self.assertRaisesMessage(RuntimeError, msg):
await self.async_client.get("/async_regular/")
finally:
connection.settings_dict["ATOMIC_REQUESTS"] = old_atomic_requests
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")
try:
connection.settings_dict["ATOMIC_REQUESTS"] = True
response = self.client.get("/not_in_transaction_using_none/")
finally:
connection.settings_dict["ATOMIC_REQUESTS"] = old_atomic_requests
self.assertContains(response, "False")
try:
connection.settings_dict["ATOMIC_REQUESTS"] = True
response = self.client.get("/not_in_transaction_using_text/")
finally:
connection.settings_dict["ATOMIC_REQUESTS"] = old_atomic_requests
# The non_atomic_requests decorator is used for an incorrect table.
self.assertContains(response, "True")
@override_settings(ROOT_URLCONF="handlers.urls")
class SignalsTests(SimpleTestCase):
def setUp(self):
self.signals = []
self.signaled_environ = None
request_started.connect(self.register_started)
self.addCleanup(request_started.disconnect, self.register_started)
request_finished.connect(self.register_finished)
self.addCleanup(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(list(response)), 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_async_view(self):
"""Calling an async view down the normal synchronous path."""
response = self.client.get("/async_regular/")
self.assertEqual(response.status_code, 200)
def test_suspiciousop_in_view_returns_400(self):
response = self.client.get("/suspicious/")
self.assertEqual(response.status_code, 400)
def test_bad_request_in_view_returns_400(self):
response = self.client.get("/bad_request/")
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")
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)
def test_streaming(self):
response = self.client.get("/streaming/")
self.assertEqual(response.status_code, 200)
self.assertEqual(b"".join(list(response)), b"streaming content")
def test_async_streaming(self):
response = self.client.get("/async_streaming/")
self.assertEqual(response.status_code, 200)
msg = (
"StreamingHttpResponse must consume asynchronous iterators in order to "
"serve them synchronously. Use a synchronous iterator instead."
)
with self.assertWarnsMessage(Warning, msg) as ctx:
self.assertEqual(b"".join(list(response)), b"streaming content")
self.assertEqual(ctx.filename, __file__)
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")
@override_settings(ROOT_URLCONF="handlers.urls")
class AsyncHandlerRequestTests(SimpleTestCase):
"""Async variants of the normal handler request tests."""
async def test_sync_view(self):
"""Calling a sync view down the asynchronous path."""
response = await self.async_client.get("/regular/")
self.assertEqual(response.status_code, 200)
async def test_async_view(self):
"""Calling an async view down the asynchronous path."""
response = await self.async_client.get("/async_regular/")
self.assertEqual(response.status_code, 200)
async def test_suspiciousop_in_view_returns_400(self):
response = await self.async_client.get("/suspicious/")
self.assertEqual(response.status_code, 400)
async def test_bad_request_in_view_returns_400(self):
response = await self.async_client.get("/bad_request/")
self.assertEqual(response.status_code, 400)
async def test_no_response(self):
msg = (
"The view handlers.views.no_response didn't return an "
"HttpResponse object. It returned None instead."
)
with self.assertRaisesMessage(ValueError, msg):
await self.async_client.get("/no_response_fbv/")
async def test_unawaited_response(self):
msg = (
"The view handlers.views.CoroutineClearingView.__call__ didn't"
" return an HttpResponse object. It returned an unawaited"
" coroutine instead. You may need to add an 'await'"
" into your view."
)
with self.assertRaisesMessage(ValueError, msg):
await self.async_client.get("/unawaited/")
def test_root_path(self):
async_request_factory = AsyncRequestFactory()
request = async_request_factory.request(
**{"path": "/root/somepath/", "root_path": "/root"}
)
self.assertEqual(request.path, "/root/somepath/")
self.assertEqual(request.script_name, "/root")
self.assertEqual(request.path_info, "/somepath/")
@override_settings(FORCE_SCRIPT_NAME="/FORCED_PREFIX")
def test_force_script_name(self):
async_request_factory = AsyncRequestFactory()
request = async_request_factory.request(**{"path": "/FORCED_PREFIX/somepath/"})
self.assertEqual(request.path, "/FORCED_PREFIX/somepath/")
self.assertEqual(request.script_name, "/FORCED_PREFIX")
self.assertEqual(request.path_info, "/somepath/")
async def test_sync_streaming(self):
response = await self.async_client.get("/streaming/")
self.assertEqual(response.status_code, 200)
msg = (
"StreamingHttpResponse must consume synchronous iterators in order to "
"serve them asynchronously. Use an asynchronous iterator instead."
)
with self.assertWarnsMessage(Warning, msg) as ctx:
self.assertEqual(
b"".join([chunk async for chunk in response]), b"streaming content"
)
self.assertEqual(ctx.filename, __file__)
async def test_async_streaming(self):
response = await self.async_client.get("/async_streaming/")
self.assertEqual(response.status_code, 200)
self.assertEqual(
b"".join([chunk async for chunk in response]), b"streaming content"
)