fix: workaround error when 'fanstatic.needed' missing from environ

apparently the previous fix doesn't actually get us past the error;
this one should do a better job although it's still not perfect
either.  for some reason the redirect to 'home' route is confused such
that it the new URL drops the ending filename but the rest remains, so
it's not really the home URL..  oh well at least this is better than
before

tests/test_subscribers.py

@@ -7,6 +7,7 @@ from unittest.mock import MagicMock, patch
 from wuttjamaican.conf import WuttaConfig
 
 from pyramid import testing
+from pyramid.httpexceptions import HTTPFound
 from pyramid.security import remember
 
 from wuttaweb import subscribers
@@ -14,6 +15,10 @@ from wuttaweb import helpers
 from wuttaweb.auth import WuttaSecurityPolicy
 
 
+# TODO: change import above
+mod = subscribers
+
+
 class TestNewRequest(TestCase):
 
     def setUp(self):
@@ -34,6 +39,14 @@ class TestNewRequest(TestCase):
         # request.registry.settings = {'wutta_config': self.config}
         return request
 
+    def test_missing_fanstatic_needed(self):
+        self.pyramid_config.add_route("home", "/")
+        event = MagicMock(request=self.request)
+
+        # should redirect if 'fanstatic.needed' missing from environ
+        with patch.object(self.request, "environ", new={"foo": "bar"}):
+            self.assertRaises(HTTPFound, mod.new_request, event)
+
     def test_wutta_config(self):
         event = MagicMock(request=self.request)