Refs #26601 -- Removed support for old-style middleware using settings.MIDDLEWARE_CLASSES.

1 files changed, 0 insertions, 908 deletions

diff --git a/tests/middleware_exceptions/test_legacy.py b/tests/middleware_exceptions/test_legacy.py
deleted file mode 100644
index b35deb90b2..0000000000
--- a/tests/middleware_exceptions/test_legacy.py
+++ /dev/null
@@ -1,908 +0,0 @@
-import sys
-
-from django.core.signals import got_request_exception
-from django.http import HttpResponse
-from django.template import engines
-from django.template.response import TemplateResponse
-from django.test import SimpleTestCase, override_settings
-from django.test.utils import ignore_warnings
-from django.utils.deprecation import MiddlewareMixin, RemovedInDjango20Warning
-
-from .tests import MiddlewareNotUsedTests
-
-
-class TestException(Exception):
-    pass
-
-
-# A middleware base class that tracks which methods have been called
-class TestMiddleware(MiddlewareMixin):
-    def __init__(self, get_response=None):
-        self.process_request_called = False
-        self.process_view_called = False
-        self.process_response_called = False
-        self.process_template_response_called = False
-        self.process_exception_called = False
-        self.get_response = get_response
-
-    def process_request(self, request):
-        self.process_request_called = True
-
-    def process_view(self, request, view_func, view_args, view_kwargs):
-        self.process_view_called = True
-
-    def process_template_response(self, request, response):
-        self.process_template_response_called = True
-        return response
-
-    def process_response(self, request, response):
-        self.process_response_called = True
-        return response
-
-    def process_exception(self, request, exception):
-        self.process_exception_called = True
-
-
-# Middleware examples that do the right thing
-class RequestMiddleware(TestMiddleware):
-    def process_request(self, request):
-        super(RequestMiddleware, self).process_request(request)
-        return HttpResponse('Request Middleware')
-
-
-class ViewMiddleware(TestMiddleware):
-    def process_view(self, request, view_func, view_args, view_kwargs):
-        super(ViewMiddleware, self).process_view(request, view_func, view_args, view_kwargs)
-        return HttpResponse('View Middleware')
-
-
-class TemplateResponseViewMiddleware(TestMiddleware):
-    def process_view(self, request, view_func, view_args, view_kwargs):
-        super(TemplateResponseViewMiddleware, self).process_view(request, view_func, view_args, view_kwargs)
-        template = engines['django'].from_string('TemplateResponse View Middleware')
-        return TemplateResponse(request, template)
-
-
-class ResponseMiddleware(TestMiddleware):
-    def process_response(self, request, response):
-        super(ResponseMiddleware, self).process_response(request, response)
-        return HttpResponse('Response Middleware')
-
-
-class ContentAccessingResponseMiddleware(TestMiddleware):
-    def process_response(self, request, response):
-        super(ContentAccessingResponseMiddleware, self).process_response(request, response)
-        return HttpResponse('Content-accessing Response Middleware: %d' % len(response.content))
-
-
-class TemplateResponseMiddleware(TestMiddleware):
-    def process_template_response(self, request, response):
-        super(TemplateResponseMiddleware, self).process_template_response(request, response)
-        template = engines['django'].from_string('Template Response Middleware')
-        return TemplateResponse(request, template)
-
-
-class ExceptionMiddleware(TestMiddleware):
-    def process_exception(self, request, exception):
-        super(ExceptionMiddleware, self).process_exception(request, exception)
-        return HttpResponse('Exception Middleware')
-
-
-# Sample middlewares that raise exceptions
-class BadRequestMiddleware(TestMiddleware):
-    def process_request(self, request):
-        super(BadRequestMiddleware, self).process_request(request)
-        raise TestException('Test Request Exception')
-
-
-class BadViewMiddleware(TestMiddleware):
-    def process_view(self, request, view_func, view_args, view_kwargs):
-        super(BadViewMiddleware, self).process_view(request, view_func, view_args, view_kwargs)
-        raise TestException('Test View Exception')
-
-
-class BadTemplateResponseMiddleware(TestMiddleware):
-    def process_template_response(self, request, response):
-        super(BadTemplateResponseMiddleware, self).process_template_response(request, response)
-        raise TestException('Test Template Response Exception')
-
-
-class BadResponseMiddleware(TestMiddleware):
-    def process_response(self, request, response):
-        super(BadResponseMiddleware, self).process_response(request, response)
-        raise TestException('Test Response Exception')
-
-
-class BadExceptionMiddleware(TestMiddleware):
-    def process_exception(self, request, exception):
-        super(BadExceptionMiddleware, self).process_exception(request, exception)
-        raise TestException('Test Exception Exception')
-
-
-# Sample middlewares that omit to return an HttpResonse
-class NoTemplateResponseMiddleware(TestMiddleware):
-    def process_template_response(self, request, response):
-        super(NoTemplateResponseMiddleware, self).process_template_response(request, response)
-
-
-class NoResponseMiddleware(TestMiddleware):
-    def process_response(self, request, response):
-        super(NoResponseMiddleware, self).process_response(request, response)
-
-
-@ignore_warnings(category=RemovedInDjango20Warning)
-@override_settings(
-    ROOT_URLCONF='middleware_exceptions.urls',
-    MIDDLEWARE_CLASSES=['django.middleware.common.CommonMiddleware'],
-    MIDDLEWARE=None,
-)
-class BaseMiddlewareExceptionTest(SimpleTestCase):
-
-    def setUp(self):
-        self.exceptions = []
-        got_request_exception.connect(self._on_request_exception)
-        self.client.handler.load_middleware()
-
-    def tearDown(self):
-        got_request_exception.disconnect(self._on_request_exception)
-        self.exceptions = []
-
-    def _on_request_exception(self, sender, request, **kwargs):
-        self.exceptions.append(sys.exc_info())
-
-    def _add_middleware(self, middleware):
-        self.client.handler._request_middleware.insert(0, middleware.process_request)
-        self.client.handler._view_middleware.insert(0, middleware.process_view)
-        self.client.handler._template_response_middleware.append(middleware.process_template_response)
-        self.client.handler._response_middleware.append(middleware.process_response)
-        self.client.handler._exception_middleware.append(middleware.process_exception)
-
-    def assert_exceptions_handled(self, url, errors, extra_error=None):
-        try:
-            self.client.get(url)
-        except TestException:
-            # Test client intentionally re-raises any exceptions being raised
-            # during request handling. Hence actual testing that exception was
-            # properly handled is done by relying on got_request_exception
-            # signal being sent.
-            pass
-        except Exception as e:
-            if type(extra_error) != type(e):
-                self.fail("Unexpected exception: %s" % e)
-        self.assertEqual(len(self.exceptions), len(errors))
-        for i, error in enumerate(errors):
-            exception, value, tb = self.exceptions[i]
-            self.assertEqual(value.args, (error, ))
-
-    def assert_middleware_usage(self, middleware, request, view, template_response, response, exception):
-        # include the middleware name for easier debugging of failures
-        self.assertEqual(
-            (
-                middleware.__class__.__name__,
-                middleware.process_request_called,
-                middleware.process_view_called,
-                middleware.process_template_response_called,
-                middleware.process_response_called,
-                middleware.process_exception_called,
-            ), (
-                middleware.__class__.__name__,
-                request,
-                view,
-                template_response,
-                response,
-                exception,
-            )
-        )
-
-
-class MiddlewareTests(BaseMiddlewareExceptionTest):
-
-    def test_process_request_middleware(self):
-        pre_middleware = TestMiddleware()
-        middleware = RequestMiddleware()
-        post_middleware = TestMiddleware()
-        self._add_middleware(post_middleware)
-        self._add_middleware(middleware)
-        self._add_middleware(pre_middleware)
-        self.assert_exceptions_handled('/middleware_exceptions/view/', [])
-
-        # The right middleware methods have been invoked
-        self.assert_middleware_usage(pre_middleware, True, False, False, True, False)
-        self.assert_middleware_usage(middleware, True, False, False, True, False)
-        self.assert_middleware_usage(post_middleware, False, False, False, True, False)
-
-    def test_process_view_middleware(self):
-        pre_middleware = TestMiddleware()
-        middleware = ViewMiddleware()
-        post_middleware = TestMiddleware()
-        self._add_middleware(post_middleware)
-        self._add_middleware(middleware)
-        self._add_middleware(pre_middleware)
-        self.assert_exceptions_handled('/middleware_exceptions/view/', [])
-
-        # The right middleware methods have been invoked
-        self.assert_middleware_usage(pre_middleware, True, True, False, True, False)
-        self.assert_middleware_usage(middleware, True, True, False, True, False)
-        self.assert_middleware_usage(post_middleware, True, False, False, True, False)
-
-    def test_process_response_middleware(self):
-        pre_middleware = TestMiddleware()
-        middleware = ResponseMiddleware()
-        post_middleware = TestMiddleware()
-        self._add_middleware(post_middleware)
-        self._add_middleware(middleware)
-        self._add_middleware(pre_middleware)
-        self.assert_exceptions_handled('/middleware_exceptions/view/', [])
-
-        # The right middleware methods have been invoked
-        self.assert_middleware_usage(pre_middleware, True, True, False, True, False)
-        self.assert_middleware_usage(middleware, True, True, False, True, False)
-        self.assert_middleware_usage(post_middleware, True, True, False, True, False)
-
-    def test_process_template_response_middleware(self):
-        pre_middleware = TestMiddleware()
-        middleware = TemplateResponseMiddleware()
-        post_middleware = TestMiddleware()
-        self._add_middleware(post_middleware)
-        self._add_middleware(middleware)
-        self._add_middleware(pre_middleware)
-        self.assert_exceptions_handled('/middleware_exceptions/template_response/', [])
-
-        # The right middleware methods have been invoked
-        self.assert_middleware_usage(pre_middleware, True, True, True, True, False)
-        self.assert_middleware_usage(middleware, True, True, True, True, False)
-        self.assert_middleware_usage(post_middleware, True, True, True, True, False)
-
-    def test_process_exception_middleware(self):
-        pre_middleware = TestMiddleware()
-        middleware = ExceptionMiddleware()
-        post_middleware = TestMiddleware()
-        self._add_middleware(post_middleware)
-        self._add_middleware(middleware)
-        self._add_middleware(pre_middleware)
-        self.assert_exceptions_handled('/middleware_exceptions/view/', [])
-
-        # The right middleware methods have been invoked
-        self.assert_middleware_usage(pre_middleware, True, True, False, True, False)
-        self.assert_middleware_usage(middleware, True, True, False, True, False)
-        self.assert_middleware_usage(post_middleware, True, True, False, True, False)
-
-    def test_process_request_middleware_not_found(self):
-        pre_middleware = TestMiddleware()
-        middleware = RequestMiddleware()
-        post_middleware = TestMiddleware()
-        self._add_middleware(post_middleware)
-        self._add_middleware(middleware)
-        self._add_middleware(pre_middleware)
-        self.assert_exceptions_handled('/middleware_exceptions/not_found/', [])
-
-        # The right middleware methods have been invoked
-        self.assert_middleware_usage(pre_middleware, True, False, False, True, False)
-        self.assert_middleware_usage(middleware, True, False, False, True, False)
-        self.assert_middleware_usage(post_middleware, False, False, False, True, False)
-
-    def test_process_view_middleware_not_found(self):
-        pre_middleware = TestMiddleware()
-        middleware = ViewMiddleware()
-        post_middleware = TestMiddleware()
-        self._add_middleware(post_middleware)
-        self._add_middleware(middleware)
-        self._add_middleware(pre_middleware)
-        self.assert_exceptions_handled('/middleware_exceptions/not_found/', [])
-
-        # The right middleware methods have been invoked
-        self.assert_middleware_usage(pre_middleware, True, True, False, True, False)
-        self.assert_middleware_usage(middleware, True, True, False, True, False)
-        self.assert_middleware_usage(post_middleware, True, False, False, True, False)
-
-    def test_process_template_response_middleware_not_found(self):
-        pre_middleware = TestMiddleware()
-        middleware = TemplateResponseMiddleware()
-        post_middleware = TestMiddleware()
-        self._add_middleware(post_middleware)
-        self._add_middleware(middleware)
-        self._add_middleware(pre_middleware)
-        self.assert_exceptions_handled('/middleware_exceptions/not_found/', [])
-
-        # The right middleware methods have been invoked
-        self.assert_middleware_usage(pre_middleware, True, True, False, True, True)
-        self.assert_middleware_usage(middleware, True, True, False, True, True)
-        self.assert_middleware_usage(post_middleware, True, True, False, True, True)
-
-    def test_process_response_middleware_not_found(self):
-        pre_middleware = TestMiddleware()
-        middleware = ResponseMiddleware()
-        post_middleware = TestMiddleware()
-        self._add_middleware(post_middleware)
-        self._add_middleware(middleware)
-        self._add_middleware(pre_middleware)
-        self.assert_exceptions_handled('/middleware_exceptions/not_found/', [])
-
-        # The right middleware methods have been invoked
-        self.assert_middleware_usage(pre_middleware, True, True, False, True, True)
-        self.assert_middleware_usage(middleware, True, True, False, True, True)
-        self.assert_middleware_usage(post_middleware, True, True, False, True, True)
-
-    def test_process_exception_middleware_not_found(self):
-        pre_middleware = TestMiddleware()
-        middleware = ExceptionMiddleware()
-        post_middleware = TestMiddleware()
-        self._add_middleware(post_middleware)
-        self._add_middleware(middleware)
-        self._add_middleware(pre_middleware)
-        self.assert_exceptions_handled('/middleware_exceptions/not_found/', [])
-
-        # The right middleware methods have been invoked
-        self.assert_middleware_usage(pre_middleware, True, True, False, True, False)
-        self.assert_middleware_usage(middleware, True, True, False, True, True)
-        self.assert_middleware_usage(post_middleware, True, True, False, True, True)
-
-    def test_process_request_middleware_exception(self):
-        pre_middleware = TestMiddleware()
-        middleware = RequestMiddleware()
-        post_middleware = TestMiddleware()
-        self._add_middleware(post_middleware)
-        self._add_middleware(middleware)
-        self._add_middleware(pre_middleware)
-        self.assert_exceptions_handled('/middleware_exceptions/error/', [])
-
-        # The right middleware methods have been invoked
-        self.assert_middleware_usage(pre_middleware, True, False, False, True, False)
-        self.assert_middleware_usage(middleware, True, False, False, True, False)
-        self.assert_middleware_usage(post_middleware, False, False, False, True, False)
-
-    def test_process_view_middleware_exception(self):
-        pre_middleware = TestMiddleware()
-        middleware = ViewMiddleware()
-        post_middleware = TestMiddleware()
-        self._add_middleware(post_middleware)
-        self._add_middleware(middleware)
-        self._add_middleware(pre_middleware)
-        self.assert_exceptions_handled('/middleware_exceptions/error/', [])
-
-        # The right middleware methods have been invoked
-        self.assert_middleware_usage(pre_middleware, True, True, False, True, False)
-        self.assert_middleware_usage(middleware, True, True, False, True, False)
-        self.assert_middleware_usage(post_middleware, True, False, False, True, False)
-
-    def test_process_response_middleware_exception(self):
-        pre_middleware = TestMiddleware()
-        middleware = ResponseMiddleware()
-        post_middleware = TestMiddleware()
-        self._add_middleware(post_middleware)
-        self._add_middleware(middleware)
-        self._add_middleware(pre_middleware)
-        self.assert_exceptions_handled('/middleware_exceptions/error/', ['Error in view'], Exception())
-
-        # The right middleware methods have been invoked
-        self.assert_middleware_usage(pre_middleware, True, True, False, True, True)
-        self.assert_middleware_usage(middleware, True, True, False, True, True)
-        self.assert_middleware_usage(post_middleware, True, True, False, True, True)
-
-    def test_process_exception_middleware_exception(self):
-        pre_middleware = TestMiddleware()
-        middleware = ExceptionMiddleware()
-        post_middleware = TestMiddleware()
-        self._add_middleware(post_middleware)
-        self._add_middleware(middleware)
-        self._add_middleware(pre_middleware)
-        self.assert_exceptions_handled('/middleware_exceptions/error/', [])
-
-        # The right middleware methods have been invoked
-        self.assert_middleware_usage(pre_middleware, True, True, False, True, False)
-        self.assert_middleware_usage(middleware, True, True, False, True, True)
-        self.assert_middleware_usage(post_middleware, True, True, False, True, True)
-
-    def test_process_request_middleware_null_view(self):
-        pre_middleware = TestMiddleware()
-        middleware = RequestMiddleware()
-        post_middleware = TestMiddleware()
-        self._add_middleware(post_middleware)
-        self._add_middleware(middleware)
-        self._add_middleware(pre_middleware)
-        self.assert_exceptions_handled('/middleware_exceptions/null_view/', [])
-
-        # The right middleware methods have been invoked
-        self.assert_middleware_usage(pre_middleware, True, False, False, True, False)
-        self.assert_middleware_usage(middleware, True, False, False, True, False)
-        self.assert_middleware_usage(post_middleware, False, False, False, True, False)
-
-    def test_process_view_middleware_null_view(self):
-        pre_middleware = TestMiddleware()
-        middleware = ViewMiddleware()
-        post_middleware = TestMiddleware()
-        self._add_middleware(post_middleware)
-        self._add_middleware(middleware)
-        self._add_middleware(pre_middleware)
-        self.assert_exceptions_handled('/middleware_exceptions/null_view/', [])
-
-        # The right middleware methods have been invoked
-        self.assert_middleware_usage(pre_middleware, True, True, False, True, False)
-        self.assert_middleware_usage(middleware, True, True, False, True, False)
-        self.assert_middleware_usage(post_middleware, True, False, False, True, False)
-
-    def test_process_response_middleware_null_view(self):
-        pre_middleware = TestMiddleware()
-        middleware = ResponseMiddleware()
-        post_middleware = TestMiddleware()
-        self._add_middleware(post_middleware)
-        self._add_middleware(middleware)
-        self._add_middleware(pre_middleware)
-        self.assert_exceptions_handled(
-            '/middleware_exceptions/null_view/', [
-                "The view middleware_exceptions.views.null_view didn't return "
-                "an HttpResponse object. It returned None instead."
-            ],
-            ValueError()
-        )
-
-        # The right middleware methods have been invoked
-        self.assert_middleware_usage(pre_middleware, True, True, False, True, False)
-        self.assert_middleware_usage(middleware, True, True, False, True, False)
-        self.assert_middleware_usage(post_middleware, True, True, False, True, False)
-
-    def test_process_exception_middleware_null_view(self):
-        pre_middleware = TestMiddleware()
-        middleware = ExceptionMiddleware()
-        post_middleware = TestMiddleware()
-        self._add_middleware(post_middleware)
-        self._add_middleware(middleware)
-        self._add_middleware(pre_middleware)
-        self.assert_exceptions_handled(
-            '/middleware_exceptions/null_view/', [
-                "The view middleware_exceptions.views.null_view didn't return "
-                "an HttpResponse object. It returned None instead."
-            ],
-            ValueError()
-        )
-
-        # The right middleware methods have been invoked
-        self.assert_middleware_usage(pre_middleware, True, True, False, True, False)
-        self.assert_middleware_usage(middleware, True, True, False, True, False)
-        self.assert_middleware_usage(post_middleware, True, True, False, True, False)
-
-    def test_process_request_middleware_permission_denied(self):
-        pre_middleware = TestMiddleware()
-        middleware = RequestMiddleware()
-        post_middleware = TestMiddleware()
-        self._add_middleware(post_middleware)
-        self._add_middleware(middleware)
-        self._add_middleware(pre_middleware)
-        self.assert_exceptions_handled('/middleware_exceptions/permission_denied/', [])
-
-        # The right middleware methods have been invoked
-        self.assert_middleware_usage(pre_middleware, True, False, False, True, False)
-        self.assert_middleware_usage(middleware, True, False, False, True, False)
-        self.assert_middleware_usage(post_middleware, False, False, False, True, False)
-
-    def test_process_view_middleware_permission_denied(self):
-        pre_middleware = TestMiddleware()
-        middleware = ViewMiddleware()
-        post_middleware = TestMiddleware()
-        self._add_middleware(post_middleware)
-        self._add_middleware(middleware)
-        self._add_middleware(pre_middleware)
-        self.assert_exceptions_handled('/middleware_exceptions/permission_denied/', [])
-
-        # The right middleware methods have been invoked
-        self.assert_middleware_usage(pre_middleware, True, True, False, True, False)
-        self.assert_middleware_usage(middleware, True, True, False, True, False)
-        self.assert_middleware_usage(post_middleware, True, False, False, True, False)
-
-    def test_process_response_middleware_permission_denied(self):
-        pre_middleware = TestMiddleware()
-        middleware = ResponseMiddleware()
-        post_middleware = TestMiddleware()
-        self._add_middleware(post_middleware)
-        self._add_middleware(middleware)
-        self._add_middleware(pre_middleware)
-        self.assert_exceptions_handled('/middleware_exceptions/permission_denied/', [])
-
-        # The right middleware methods have been invoked
-        self.assert_middleware_usage(pre_middleware, True, True, False, True, True)
-        self.assert_middleware_usage(middleware, True, True, False, True, True)
-        self.assert_middleware_usage(post_middleware, True, True, False, True, True)
-
-    def test_process_exception_middleware_permission_denied(self):
-        pre_middleware = TestMiddleware()
-        middleware = ExceptionMiddleware()
-        post_middleware = TestMiddleware()
-        self._add_middleware(post_middleware)
-        self._add_middleware(middleware)
-        self._add_middleware(pre_middleware)
-        self.assert_exceptions_handled('/middleware_exceptions/permission_denied/', [])
-
-        # The right middleware methods have been invoked
-        self.assert_middleware_usage(pre_middleware, True, True, False, True, False)
-        self.assert_middleware_usage(middleware, True, True, False, True, True)
-        self.assert_middleware_usage(post_middleware, True, True, False, True, True)
-
-    def test_process_template_response_error(self):
-        middleware = TestMiddleware()
-        self._add_middleware(middleware)
-        self.assert_exceptions_handled('/middleware_exceptions/template_response_error/', [])
-
-        # The right middleware methods have been invoked
-        self.assert_middleware_usage(middleware, True, True, True, True, False)
-
-    def test_templateresponse_from_process_view_rendered(self):
-        view_middleware = TemplateResponseViewMiddleware()
-        # ContentAccessingResponseMiddleware tries to access response.content
-        # in its process_response().
-        post_middleware = ContentAccessingResponseMiddleware()
-        self._add_middleware(view_middleware)
-        self._add_middleware(post_middleware)
-        self.assert_exceptions_handled('/middleware_exceptions/view/', [])
-        self.assert_middleware_usage(view_middleware, True, True, True, True, False)
-        self.assert_middleware_usage(post_middleware, True, True, True, True, False)
-
-    def test_templateresponse_from_process_view_passed_to_template_response_middleware(self):
-        """
-        TemplateResponses returned from process_view() should be passed to any
-        process_template_response().
-        """
-        view_middleware = TemplateResponseViewMiddleware()
-        resp_middleware = TemplateResponseMiddleware()
-        self._add_middleware(view_middleware)
-        self._add_middleware(resp_middleware)
-        self.assert_exceptions_handled('/middleware_exceptions/view/', [])
-        self.assert_middleware_usage(view_middleware, True, True, True, True, False)
-        self.assert_middleware_usage(resp_middleware, True, True, True, True, False)
-
-
-class BadMiddlewareTests(BaseMiddlewareExceptionTest):
-
-    def test_process_request_bad_middleware(self):
-        pre_middleware = TestMiddleware()
-        bad_middleware = BadRequestMiddleware()
-        post_middleware = TestMiddleware()
-        self._add_middleware(post_middleware)
-        self._add_middleware(bad_middleware)
-        self._add_middleware(pre_middleware)
-        self.assert_exceptions_handled('/middleware_exceptions/view/', ['Test Request Exception'])
-
-        # The right middleware methods have been invoked
-        self.assert_middleware_usage(pre_middleware, True, False, False, True, False)
-        self.assert_middleware_usage(bad_middleware, True, False, False, True, False)
-        self.assert_middleware_usage(post_middleware, False, False, False, True, False)
-
-    def test_process_view_bad_middleware(self):
-        pre_middleware = TestMiddleware()
-        bad_middleware = BadViewMiddleware()
-        post_middleware = TestMiddleware()
-        self._add_middleware(post_middleware)
-        self._add_middleware(bad_middleware)
-        self._add_middleware(pre_middleware)
-        self.assert_exceptions_handled('/middleware_exceptions/view/', ['Test View Exception'])
-
-        # The right middleware methods have been invoked
-        self.assert_middleware_usage(pre_middleware, True, True, False, True, False)
-        self.assert_middleware_usage(bad_middleware, True, True, False, True, False)
-        self.assert_middleware_usage(post_middleware, True, False, False, True, False)
-
-    def test_process_template_response_bad_middleware(self):
-        pre_middleware = TestMiddleware()
-        bad_middleware = BadTemplateResponseMiddleware()
-        post_middleware = TestMiddleware()
-        self._add_middleware(post_middleware)
-        self._add_middleware(bad_middleware)
-        self._add_middleware(pre_middleware)
-        self.assert_exceptions_handled(
-            '/middleware_exceptions/template_response/',
-            ['Test Template Response Exception']
-        )
-
-        # The right middleware methods have been invoked
-        self.assert_middleware_usage(pre_middleware, True, True, False, True, False)
-        self.assert_middleware_usage(bad_middleware, True, True, True, True, False)
-        self.assert_middleware_usage(post_middleware, True, True, True, True, False)
-
-    def test_process_response_bad_middleware(self):
-        pre_middleware = TestMiddleware()
-        bad_middleware = BadResponseMiddleware()
-        post_middleware = TestMiddleware()
-        self._add_middleware(post_middleware)
-        self._add_middleware(bad_middleware)
-        self._add_middleware(pre_middleware)
-        self.assert_exceptions_handled('/middleware_exceptions/view/', ['Test Response Exception'])
-
-        # The right middleware methods have been invoked
-        self.assert_middleware_usage(pre_middleware, True, True, False, False, False)
-        self.assert_middleware_usage(bad_middleware, True, True, False, True, False)
-        self.assert_middleware_usage(post_middleware, True, True, False, True, False)
-
-    def test_process_exception_bad_middleware(self):
-        pre_middleware = TestMiddleware()
-        bad_middleware = BadExceptionMiddleware()
-        post_middleware = TestMiddleware()
-        self._add_middleware(post_middleware)
-        self._add_middleware(bad_middleware)
-        self._add_middleware(pre_middleware)
-        self.assert_exceptions_handled('/middleware_exceptions/view/', [])
-
-        # The right middleware methods have been invoked
-        self.assert_middleware_usage(pre_middleware, True, True, False, True, False)
-        self.assert_middleware_usage(bad_middleware, True, True, False, True, False)
-        self.assert_middleware_usage(post_middleware, True, True, False, True, False)
-
-    def test_process_request_bad_middleware_not_found(self):
-        pre_middleware = TestMiddleware()
-        bad_middleware = BadRequestMiddleware()
-        post_middleware = TestMiddleware()
-        self._add_middleware(post_middleware)
-        self._add_middleware(bad_middleware)
-        self._add_middleware(pre_middleware)
-        self.assert_exceptions_handled('/middleware_exceptions/not_found/', ['Test Request Exception'])
-
-        # The right middleware methods have been invoked
-        self.assert_middleware_usage(pre_middleware, True, False, False, True, False)
-        self.assert_middleware_usage(bad_middleware, True, False, False, True, False)
-        self.assert_middleware_usage(post_middleware, False, False, False, True, False)
-
-    def test_process_view_bad_middleware_not_found(self):
-        pre_middleware = TestMiddleware()
-        bad_middleware = BadViewMiddleware()
-        post_middleware = TestMiddleware()
-        self._add_middleware(post_middleware)
-        self._add_middleware(bad_middleware)
-        self._add_middleware(pre_middleware)
-        self.assert_exceptions_handled('/middleware_exceptions/not_found/', ['Test View Exception'])
-
-        # The right middleware methods have been invoked
-        self.assert_middleware_usage(pre_middleware, True, True, False, True, False)
-        self.assert_middleware_usage(bad_middleware, True, True, False, True, False)
-        self.assert_middleware_usage(post_middleware, True, False, False, True, False)
-
-    def test_process_response_bad_middleware_not_found(self):
-        pre_middleware = TestMiddleware()
-        bad_middleware = BadResponseMiddleware()
-        post_middleware = TestMiddleware()
-        self._add_middleware(post_middleware)
-        self._add_middleware(bad_middleware)
-        self._add_middleware(pre_middleware)
-        self.assert_exceptions_handled('/middleware_exceptions/not_found/', ['Test Response Exception'])
-
-        # The right middleware methods have been invoked
-        self.assert_middleware_usage(pre_middleware, True, True, False, False, True)
-        self.assert_middleware_usage(bad_middleware, True, True, False, True, True)
-        self.assert_middleware_usage(post_middleware, True, True, False, True, True)
-
-    def test_process_exception_bad_middleware_not_found(self):
-        pre_middleware = TestMiddleware()
-        bad_middleware = BadExceptionMiddleware()
-        post_middleware = TestMiddleware()
-        self._add_middleware(post_middleware)
-        self._add_middleware(bad_middleware)
-        self._add_middleware(pre_middleware)
-        self.assert_exceptions_handled('/middleware_exceptions/not_found/', ['Test Exception Exception'])
-
-        # The right middleware methods have been invoked
-        self.assert_middleware_usage(pre_middleware, True, True, False, True, False)
-        self.assert_middleware_usage(bad_middleware, True, True, False, True, True)
-        self.assert_middleware_usage(post_middleware, True, True, False, True, True)
-
-    def test_process_request_bad_middleware_exception(self):
-        pre_middleware = TestMiddleware()
-        bad_middleware = BadRequestMiddleware()
-        post_middleware = TestMiddleware()
-        self._add_middleware(post_middleware)
-        self._add_middleware(bad_middleware)
-        self._add_middleware(pre_middleware)
-        self.assert_exceptions_handled('/middleware_exceptions/error/', ['Test Request Exception'])
-
-        # The right middleware methods have been invoked
-        self.assert_middleware_usage(pre_middleware, True, False, False, True, False)
-        self.assert_middleware_usage(bad_middleware, True, False, False, True, False)
-        self.assert_middleware_usage(post_middleware, False, False, False, True, False)
-
-    def test_process_view_bad_middleware_exception(self):
-        pre_middleware = TestMiddleware()
-        bad_middleware = BadViewMiddleware()
-        post_middleware = TestMiddleware()
-        self._add_middleware(post_middleware)
-        self._add_middleware(bad_middleware)
-        self._add_middleware(pre_middleware)
-        self.assert_exceptions_handled('/middleware_exceptions/error/', ['Test View Exception'])
-
-        # The right middleware methods have been invoked
-        self.assert_middleware_usage(pre_middleware, True, True, False, True, False)
-        self.assert_middleware_usage(bad_middleware, True, True, False, True, False)
-        self.assert_middleware_usage(post_middleware, True, False, False, True, False)
-
-    def test_process_response_bad_middleware_exception(self):
-        pre_middleware = TestMiddleware()
-        bad_middleware = BadResponseMiddleware()
-        post_middleware = TestMiddleware()
-        self._add_middleware(post_middleware)
-        self._add_middleware(bad_middleware)
-        self._add_middleware(pre_middleware)
-        self.assert_exceptions_handled('/middleware_exceptions/error/', ['Error in view', 'Test Response Exception'])
-
-        # The right middleware methods have been invoked
-        self.assert_middleware_usage(pre_middleware, True, True, False, False, True)
-        self.assert_middleware_usage(bad_middleware, True, True, False, True, True)
-        self.assert_middleware_usage(post_middleware, True, True, False, True, True)
-
-    def test_process_exception_bad_middleware_exception(self):
-        pre_middleware = TestMiddleware()
-        bad_middleware = BadExceptionMiddleware()
-        post_middleware = TestMiddleware()
-        self._add_middleware(post_middleware)
-        self._add_middleware(bad_middleware)
-        self._add_middleware(pre_middleware)
-        self.assert_exceptions_handled('/middleware_exceptions/error/', ['Test Exception Exception'])
-
-        # The right middleware methods have been invoked
-        self.assert_middleware_usage(pre_middleware, True, True, False, True, False)
-        self.assert_middleware_usage(bad_middleware, True, True, False, True, True)
-        self.assert_middleware_usage(post_middleware, True, True, False, True, True)
-
-    def test_process_request_bad_middleware_null_view(self):
-        pre_middleware = TestMiddleware()
-        bad_middleware = BadRequestMiddleware()
-        post_middleware = TestMiddleware()
-        self._add_middleware(post_middleware)
-        self._add_middleware(bad_middleware)
-        self._add_middleware(pre_middleware)
-        self.assert_exceptions_handled('/middleware_exceptions/null_view/', ['Test Request Exception'])
-
-        # The right middleware methods have been invoked
-        self.assert_middleware_usage(pre_middleware, True, False, False, True, False)
-        self.assert_middleware_usage(bad_middleware, True, False, False, True, False)
-        self.assert_middleware_usage(post_middleware, False, False, False, True, False)
-
-    def test_process_view_bad_middleware_null_view(self):
-        pre_middleware = TestMiddleware()
-        bad_middleware = BadViewMiddleware()
-        post_middleware = TestMiddleware()
-        self._add_middleware(post_middleware)
-        self._add_middleware(bad_middleware)
-        self._add_middleware(pre_middleware)
-        self.assert_exceptions_handled('/middleware_exceptions/null_view/', ['Test View Exception'])
-
-        # The right middleware methods have been invoked
-        self.assert_middleware_usage(pre_middleware, True, True, False, True, False)
-        self.assert_middleware_usage(bad_middleware, True, True, False, True, False)
-        self.assert_middleware_usage(post_middleware, True, False, False, True, False)
-
-    def test_process_response_bad_middleware_null_view(self):
-        pre_middleware = TestMiddleware()
-        bad_middleware = BadResponseMiddleware()
-        post_middleware = TestMiddleware()
-        self._add_middleware(post_middleware)
-        self._add_middleware(bad_middleware)
-        self._add_middleware(pre_middleware)
-        self.assert_exceptions_handled(
-            '/middleware_exceptions/null_view/', [
-                "The view middleware_exceptions.views.null_view didn't return "
-                "an HttpResponse object. It returned None instead.",
-                'Test Response Exception'
-            ]
-        )
-
-        # The right middleware methods have been invoked
-        self.assert_middleware_usage(pre_middleware, True, True, False, False, False)
-        self.assert_middleware_usage(bad_middleware, True, True, False, True, False)
-        self.assert_middleware_usage(post_middleware, True, True, False, True, False)
-
-    def test_process_exception_bad_middleware_null_view(self):
-        pre_middleware = TestMiddleware()
-        bad_middleware = BadExceptionMiddleware()
-        post_middleware = TestMiddleware()
-        self._add_middleware(post_middleware)
-        self._add_middleware(bad_middleware)
-        self._add_middleware(pre_middleware)
-        self.assert_exceptions_handled(
-            '/middleware_exceptions/null_view/', [
-                "The view middleware_exceptions.views.null_view didn't return "
-                "an HttpResponse object. It returned None instead."
-            ],
-            ValueError()
-        )
-
-        # The right middleware methods have been invoked
-        self.assert_middleware_usage(pre_middleware, True, True, False, True, False)
-        self.assert_middleware_usage(bad_middleware, True, True, False, True, False)
-        self.assert_middleware_usage(post_middleware, True, True, False, True, False)
-
-    def test_process_request_bad_middleware_permission_denied(self):
-        pre_middleware = TestMiddleware()
-        bad_middleware = BadRequestMiddleware()
-        post_middleware = TestMiddleware()
-        self._add_middleware(post_middleware)
-        self._add_middleware(bad_middleware)
-        self._add_middleware(pre_middleware)
-        self.assert_exceptions_handled('/middleware_exceptions/permission_denied/', ['Test Request Exception'])
-
-        # The right middleware methods have been invoked
-        self.assert_middleware_usage(pre_middleware, True, False, False, True, False)
-        self.assert_middleware_usage(bad_middleware, True, False, False, True, False)
-        self.assert_middleware_usage(post_middleware, False, False, False, True, False)
-
-    def test_process_view_bad_middleware_permission_denied(self):
-        pre_middleware = TestMiddleware()
-        bad_middleware = BadViewMiddleware()
-        post_middleware = TestMiddleware()
-        self._add_middleware(post_middleware)
-        self._add_middleware(bad_middleware)
-        self._add_middleware(pre_middleware)
-        self.assert_exceptions_handled('/middleware_exceptions/permission_denied/', ['Test View Exception'])
-
-        # The right middleware methods have been invoked
-        self.assert_middleware_usage(pre_middleware, True, True, False, True, False)
-        self.assert_middleware_usage(bad_middleware, True, True, False, True, False)
-        self.assert_middleware_usage(post_middleware, True, False, False, True, False)
-
-    def test_process_response_bad_middleware_permission_denied(self):
-        pre_middleware = TestMiddleware()
-        bad_middleware = BadResponseMiddleware()
-        post_middleware = TestMiddleware()
-        self._add_middleware(post_middleware)
-        self._add_middleware(bad_middleware)
-        self._add_middleware(pre_middleware)
-        self.assert_exceptions_handled('/middleware_exceptions/permission_denied/', ['Test Response Exception'])
-
-        # The right middleware methods have been invoked
-        self.assert_middleware_usage(pre_middleware, True, True, False, False, True)
-        self.assert_middleware_usage(bad_middleware, True, True, False, True, True)
-        self.assert_middleware_usage(post_middleware, True, True, False, True, True)
-
-    def test_process_exception_bad_middleware_permission_denied(self):
-        pre_middleware = TestMiddleware()
-        bad_middleware = BadExceptionMiddleware()
-        post_middleware = TestMiddleware()
-        self._add_middleware(post_middleware)
-        self._add_middleware(bad_middleware)
-        self._add_middleware(pre_middleware)
-        self.assert_exceptions_handled('/middleware_exceptions/permission_denied/', ['Test Exception Exception'])
-
-        # The right middleware methods have been invoked
-        self.assert_middleware_usage(pre_middleware, True, True, False, True, False)
-        self.assert_middleware_usage(bad_middleware, True, True, False, True, True)
-        self.assert_middleware_usage(post_middleware, True, True, False, True, True)
-
-    def test_process_response_no_response_middleware(self):
-        pre_middleware = TestMiddleware()
-        middleware = NoResponseMiddleware()
-        post_middleware = TestMiddleware()
-        self._add_middleware(post_middleware)
-        self._add_middleware(middleware)
-        self._add_middleware(pre_middleware)
-        self.assert_exceptions_handled('/middleware_exceptions/view/', [
-            "NoResponseMiddleware.process_response didn't return an HttpResponse object. It returned None instead."
-        ],
-            ValueError())
-
-        # The right middleware methods have been invoked
-        self.assert_middleware_usage(pre_middleware, True, True, False, False, False)
-        self.assert_middleware_usage(middleware, True, True, False, True, False)
-        self.assert_middleware_usage(post_middleware, True, True, False, True, False)
-
-    def test_process_template_response_no_response_middleware(self):
-        pre_middleware = TestMiddleware()
-        middleware = NoTemplateResponseMiddleware()
-        post_middleware = TestMiddleware()
-        self._add_middleware(post_middleware)
-        self._add_middleware(middleware)
-        self._add_middleware(pre_middleware)
-        self.assert_exceptions_handled(
-            '/middleware_exceptions/template_response/', [
-                "NoTemplateResponseMiddleware.process_template_response didn't "
-                "return an HttpResponse object. It returned None instead."
-            ],
-            ValueError()
-        )
-
-        # The right middleware methods have been invoked
-        self.assert_middleware_usage(pre_middleware, True, True, False, True, False)
-        self.assert_middleware_usage(middleware, True, True, True, True, False)
-        self.assert_middleware_usage(post_middleware, True, True, True, True, False)
-
-
-@ignore_warnings(category=RemovedInDjango20Warning)
-@override_settings(
-    MIDDLEWARE_CLASSES=['django.middleware.common.CommonMiddleware'],
-    MIDDLEWARE=None,
-)
-class MiddlewareNotUsedMiddlewareClassesTests(MiddlewareNotUsedTests):
-    pass