Merged regressiontests and modeltests into the test root.

5 files changed, 829 insertions, 0 deletions

diff --git a/tests/middleware_exceptions/__init__.py b/tests/middleware_exceptions/__init__.py
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/tests/middleware_exceptions/__init__.py
diff --git a/tests/middleware_exceptions/models.py b/tests/middleware_exceptions/models.py
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/tests/middleware_exceptions/models.py
diff --git a/tests/middleware_exceptions/tests.py b/tests/middleware_exceptions/tests.py
new file mode 100644
index 0000000000..586aa0f004
--- /dev/null
+++ b/tests/middleware_exceptions/tests.py
@@ -0,0 +1,786 @@
+import sys
+
+from django.conf import settings
+from django.core.signals import got_request_exception
+from django.http import HttpResponse
+from django.template.response import TemplateResponse
+from django.template import Template
+from django.test import TestCase
+
+class TestException(Exception):
+    pass
+
+# A middleware base class that tracks which methods have been called
+
+class TestMiddleware(object):
+    def __init__(self):
+        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
+
+    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 ResponseMiddleware(TestMiddleware):
+    def process_response(self, request, response):
+        super(ResponseMiddleware, self).process_response(request, response)
+        return HttpResponse('Response Middleware')
+
+class TemplateResponseMiddleware(TestMiddleware):
+    def process_template_response(self, request, response):
+        super(TemplateResponseMiddleware, self).process_template_response(request, response)
+        return TemplateResponse(request, Template('Template Response Middleware'))
+
+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')
+
+
+class BaseMiddlewareExceptionTest(TestCase):
+    urls = 'regressiontests.middleware_exceptions.urls'
+
+    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:
+            response = 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):
+        self.assertEqual(middleware.process_request_called, request)
+        self.assertEqual(middleware.process_view_called, view)
+        self.assertEqual(middleware.process_template_response_called, template_response)
+        self.assertEqual(middleware.process_response_called, response)
+        self.assertEqual(middleware.process_exception_called, 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/', [])
+
+        # Check that 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/', [])
+
+        # Check that 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/', [])
+
+        # Check that 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/', [])
+
+        # Check that 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/', [])
+
+        # Check that 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/', [])
+
+        # Check that 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/', [])
+
+        # Check that 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/', [])
+
+        # Check that 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/', [])
+
+        # Check that 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/', [])
+
+        # Check that 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/', [])
+
+        # Check that 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/', [])
+
+        # Check that 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())
+
+        # Check that 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/', [])
+
+        # Check that 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/', [])
+
+        # Check that 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/', [])
+
+        # Check that 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 regressiontests.middleware_exceptions.views.null_view didn't return an HttpResponse object.",
+            ],
+            ValueError())
+
+        # Check that 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 regressiontests.middleware_exceptions.views.null_view didn't return an HttpResponse object."
+            ],
+            ValueError())
+
+        # Check that 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/', [])
+
+        # Check that 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/', [])
+
+        # Check that 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/', [])
+
+        # Check that 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/', [])
+
+        # Check that 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/', [])
+
+        # Check that the right middleware methods have been invoked
+        self.assert_middleware_usage(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'])
+
+        # Check that 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'])
+
+        # Check that 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'])
+
+        # Check that 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'])
+
+        # Check that 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/', [])
+
+        # Check that 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'])
+
+        # Check that 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'])
+
+        # Check that 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'])
+
+        # Check that 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'])
+
+        # Check that 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'])
+
+        # Check that 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'])
+
+        # Check that 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'])
+
+        # Check that 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'])
+
+        # Check that 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'])
+
+        # Check that 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'])
+
+        # Check that 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 regressiontests.middleware_exceptions.views.null_view didn't return an HttpResponse object.",
+                'Test Response Exception'
+            ])
+
+        # Check that 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 regressiontests.middleware_exceptions.views.null_view didn't return an HttpResponse object."
+            ],
+            ValueError())
+
+        # Check that 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'])
+
+        # Check that 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'])
+
+        # Check that 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'])
+
+        # Check that 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'])
+
+        # Check that 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)
+
+
+_missing = object()
+class RootUrlconfTests(TestCase):
+    urls = 'regressiontests.middleware_exceptions.urls'
+
+    def test_missing_root_urlconf(self):
+        try:
+            original_ROOT_URLCONF = settings.ROOT_URLCONF
+            del settings.ROOT_URLCONF
+        except AttributeError:
+            original_ROOT_URLCONF = _missing
+        self.assertRaises(AttributeError,
+            self.client.get, "/middleware_exceptions/view/"
+        )
+
+        if original_ROOT_URLCONF is not _missing:
+            settings.ROOT_URLCONF = original_ROOT_URLCONF
diff --git a/tests/middleware_exceptions/urls.py b/tests/middleware_exceptions/urls.py
new file mode 100644
index 0000000000..042607fdc8
--- /dev/null
+++ b/tests/middleware_exceptions/urls.py
@@ -0,0 +1,17 @@
+# coding: utf-8
+from __future__ import absolute_import
+
+from django.conf.urls import patterns
+
+from . import views
+
+urlpatterns = patterns('',
+    (r'^middleware_exceptions/view/$', views.normal_view),
+    (r'^middleware_exceptions/not_found/$', views.not_found),
+    (r'^middleware_exceptions/error/$', views.server_error),
+    (r'^middleware_exceptions/null_view/$', views.null_view),
+    (r'^middleware_exceptions/permission_denied/$', views.permission_denied),
+
+    (r'^middleware_exceptions/template_response/$', views.template_response),
+    (r'^middleware_exceptions/template_response_error/$', views.template_response_error),
+)
diff --git a/tests/middleware_exceptions/views.py b/tests/middleware_exceptions/views.py
new file mode 100644
index 0000000000..ddf28c46a3
--- /dev/null
+++ b/tests/middleware_exceptions/views.py
@@ -0,0 +1,26 @@
+from django import http
+from django.core.exceptions import PermissionDenied
+from django.template import Template
+from django.template.response import TemplateResponse
+
+
+def normal_view(request):
+    return http.HttpResponse('OK')
+
+def template_response(request):
+    return TemplateResponse(request, Template('OK'))
+
+def template_response_error(request):
+    return TemplateResponse(request, Template('{%'))
+
+def not_found(request):
+    raise http.Http404()
+
+def server_error(request):
+    raise Exception('Error in view')
+
+def null_view(request):
+    return None
+
+def permission_denied(request):
+    raise PermissionDenied()