mirror of https://github.com/django/django.git
81 lines
2.9 KiB
Python
81 lines
2.9 KiB
Python
import threading
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from asgiref.sync import async_to_sync
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from django.contrib.sessions.middleware import SessionMiddleware
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from django.db import connection
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from django.http.request import HttpRequest
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from django.http.response import HttpResponse
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from django.middleware.cache import (
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CacheMiddleware, FetchFromCacheMiddleware, UpdateCacheMiddleware,
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)
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from django.middleware.common import CommonMiddleware
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from django.middleware.security import SecurityMiddleware
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from django.test import SimpleTestCase
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from django.utils.deprecation import MiddlewareMixin, RemovedInDjango40Warning
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class MiddlewareMixinTests(SimpleTestCase):
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"""
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Deprecation warning is raised when using get_response=None.
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"""
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msg = 'Passing None for the middleware get_response argument is deprecated.'
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def test_deprecation(self):
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with self.assertRaisesMessage(RemovedInDjango40Warning, self.msg):
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CommonMiddleware()
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def test_passing_explicit_none(self):
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with self.assertRaisesMessage(RemovedInDjango40Warning, self.msg):
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CommonMiddleware(None)
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def test_subclass_deprecation(self):
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"""
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Deprecation warning is raised in subclasses overriding __init__()
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without calling super().
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"""
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for middleware in [
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SessionMiddleware,
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CacheMiddleware,
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FetchFromCacheMiddleware,
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UpdateCacheMiddleware,
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SecurityMiddleware,
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]:
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with self.subTest(middleware=middleware):
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with self.assertRaisesMessage(RemovedInDjango40Warning, self.msg):
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middleware()
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def test_sync_to_async_uses_base_thread_and_connection(self):
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"""
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The process_request() and process_response() hooks must be called with
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the sync_to_async thread_sensitive flag enabled, so that database
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operations use the correct thread and connection.
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"""
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def request_lifecycle():
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"""Fake request_started/request_finished."""
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return (threading.get_ident(), id(connection))
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async def get_response(self):
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return HttpResponse()
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class SimpleMiddleWare(MiddlewareMixin):
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def process_request(self, request):
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request.thread_and_connection = request_lifecycle()
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def process_response(self, request, response):
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response.thread_and_connection = request_lifecycle()
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return response
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threads_and_connections = []
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threads_and_connections.append(request_lifecycle())
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request = HttpRequest()
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response = async_to_sync(SimpleMiddleWare(get_response))(request)
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threads_and_connections.append(request.thread_and_connection)
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threads_and_connections.append(response.thread_and_connection)
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threads_and_connections.append(request_lifecycle())
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self.assertEqual(len(threads_and_connections), 4)
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self.assertEqual(len(set(threads_and_connections)), 1)
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