diff -r 3f24adbf971a -r ec97974b9010 server/test/datacomputed/schema.py
--- a/server/test/datacomputed/schema.py	Thu Oct 08 13:51:54 2015 +0200
+++ b/server/test/datacomputed/schema.py	Wed Sep 16 16:04:17 2015 +0200
@@ -58,3 +58,8 @@
 
 class to_be_renamed(ComputedRelation):
     rule = 'S employees E, O concerns E'
+
+
+class perm_changes(ComputedRelation):
+    __permissions__ = {'read': ('managers', 'users')}
+    rule = 'S employees E, O concerns E'