# HG changeset patch
# User sylvain.thenault@logilab.fr
# Date 1234968599 -3600
# Node ID cc339d3ff7aec1b1a1d3b95ed9e31f8f1765800c
# Parent  ab8d2282e7384832a302ebc0170f4510fc715619
assert __select__ is callable

diff -r ab8d2282e738 -r cc339d3ff7ae vregistry.py
--- a/vregistry.py	Wed Feb 18 15:48:57 2009 +0100
+++ b/vregistry.py	Wed Feb 18 15:49:59 2009 +0100
@@ -237,6 +237,7 @@
         # as such because we need to compose registered in some cases
         vobject = obj.registered.im_func(obj, self)
         assert not vobject in vobjects
+        assert callable(vobject.__select__), vobject
         vobjects.append(vobject)
         try:
             vname = vobject.__name__