import sys from django.conf import settings from django.core.exceptions import MiddlewareNotUsed from django.core.signals import got_request_exception from django.http import HttpResponse from django.template.response import TemplateResponse from django.template import engines from django.test import RequestFactory, TestCase, override_settings from django.test.utils import patch_logger 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) 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) @override_settings(ROOT_URLCONF='middleware_exceptions.urls') class BaseMiddlewareExceptionTest(TestCase): 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): 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 middleware_exceptions.views.null_view didn't return an HttpResponse object. It returned None instead.", ], 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 middleware_exceptions.views.null_view didn't return an HttpResponse object. It returned None instead." ], 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 middleware_exceptions.views.null_view didn't return an HttpResponse object. It returned None instead.", '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 middleware_exceptions.views.null_view didn't return an HttpResponse object. It returned None instead." ], 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) 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()) # Check that 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()) # 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, True, True, False) self.assert_middleware_usage(post_middleware, True, True, True, True, False) _missing = object() @override_settings(ROOT_URLCONF='middleware_exceptions.urls') class RootUrlconfTests(TestCase): @override_settings(ROOT_URLCONF=None) def test_missing_root_urlconf(self): # Removing ROOT_URLCONF is safe, as override_settings will restore # the previously defined settings. del settings.ROOT_URLCONF self.assertRaises(AttributeError, self.client.get, "/middleware_exceptions/view/") class MyMiddleware(object): def __init__(self): raise MiddlewareNotUsed def process_request(self, request): pass class MyMiddlewareWithExceptionMessage(object): def __init__(self): raise MiddlewareNotUsed('spam eggs') def process_request(self, request): pass @override_settings( DEBUG=True, ROOT_URLCONF='middleware_exceptions.urls', ) class MiddlewareNotUsedTests(TestCase): rf = RequestFactory() def test_raise_exception(self): request = self.rf.get('middleware_exceptions/view/') with self.assertRaises(MiddlewareNotUsed): MyMiddleware().process_request(request) @override_settings(MIDDLEWARE_CLASSES=( 'middleware_exceptions.tests.MyMiddleware', )) def test_log(self): with patch_logger('django.request', 'debug') as calls: self.client.get('/middleware_exceptions/view/') self.assertEqual(len(calls), 1) self.assertEqual( calls[0], "MiddlewareNotUsed: 'middleware_exceptions.tests.MyMiddleware'" ) @override_settings(MIDDLEWARE_CLASSES=( 'middleware_exceptions.tests.MyMiddlewareWithExceptionMessage', )) def test_log_custom_message(self): with patch_logger('django.request', 'debug') as calls: self.client.get('/middleware_exceptions/view/') self.assertEqual(len(calls), 1) self.assertEqual( calls[0], "MiddlewareNotUsed('middleware_exceptions.tests.MyMiddlewareWithExceptionMessage'): spam eggs" ) @override_settings(DEBUG=False) def test_do_not_log_when_debug_is_false(self): with patch_logger('django.request', 'debug') as calls: self.client.get('/middleware_exceptions/view/') self.assertEqual(len(calls), 0)