If no subscribers are registered via ``registerHandler`` or

  ``registerSubscriptionAdapter``, ``notify`` is a noop for speed.

1 files changed, 26 insertions, 7 deletions

diff --git a/repoze/bfg/tests/test_registry.py b/repoze/bfg/tests/test_registry.py
index 2c26d850e..f54ac934f 100644
--- a/repoze/bfg/tests/test_registry.py
+++ b/repoze/bfg/tests/test_registry.py
@@ -10,15 +10,34 @@ class TestRegistry(unittest.TestCase):
     def _makeOne(self):
         return self._getTargetClass()()
 
-    def test_notify(self):
+    def test_registerHandler_and_notify(self):
         registry = self._makeOne()
+        self.assertEqual(registry._has_listeners, False)
+        from zope.interface import Interface
+        from zope.interface import implements
+        class IFoo(Interface):
+            pass
+        class FooEvent(object):
+            implements(IFoo)
         L = []
-        def subscribers(events, *arg):
-            L.extend(events)
-            return ['abc']
-        registry.subscribers = subscribers
-        registry.notify('123')
-        self.assertEqual(L, ['123'])
+        def f(event):
+            L.append(event)
+        registry.registerHandler(f, [IFoo])
+        self.assertEqual(registry._has_listeners, True)
+        event = FooEvent()
+        registry.notify(event)
+        self.assertEqual(L, [event])
+
+    def test_registerSubscriptionAdapter_and_notify(self):
+        registry = self._makeOne()
+        self.assertEqual(registry._has_listeners, False)
+        from zope.interface import Interface
+        class EventHandler:
+            pass
+        class IFoo(Interface):
+            pass
+        registry.registerSubscriptionAdapter(EventHandler, [IFoo], Interface)
+        self.assertEqual(registry._has_listeners, True)
 
 class TestPopulateRegistry(unittest.TestCase):
     def setUp(self):