Backport Interface Verify bugfix from Zope 3.

lib/python/Interface/Verify.py

@@ -44,7 +44,7 @@ def _verify(iface, candidate, tentative=0, vtype=None):
     if not tentative and not tester( candidate ):
         raise DoesNotImplement(iface)
 
-    for n, d in iface.namesAndDescriptions():
+    for n, d in iface.namesAndDescriptions(1):
         if not hasattr(candidate, n):
             raise BrokenImplementation(iface, n)
 

lib/python/Interface/tests/testVerify.py

@@ -14,7 +14,7 @@
 """
 
 Revision information:
-$Id: testVerify.py,v 1.3 2002/08/14 21:35:33 mj Exp $
+$Id: testVerify.py,v 1.4 2002/11/11 19:53:16 mj Exp $
 """
 from __future__ import nested_scopes
 
@@ -55,6 +55,25 @@ class Test(unittest.TestCase):
 
         verifyClass(I, C)
 
+    def testMissingAttr_with_Extended_Interface(self):
+       
+        class II(Interface):
+            def f():
+                pass
+
+        class I(II):
+            pass
+
+        class C:
+
+            __implements__=I
+
+        self.assertRaises(BrokenImplementation, verifyClass, I, C)
+
+        C.f=lambda self: None
+
+        verifyClass(I, C)
+
     def testWrongArgs(self):
 
         class I(Interface):