def setUp(self):
     super(WsgiLogErrorsTest, self).setUp()
     self.wle = WsgiLogErrors()
     self.request = Mock()
     self.request.META = {'wsgi.errors': StringIO()}
     self.exception = Exception('test exception', 'abc')
     self.exception404 = Http404('test 404', 'abc')
     self.exception403 = PermissionDenied('test 403', 'abc')