diff -r 113e9da47afc -r c7dbd10648e6 web/test/data/schema.py
--- a/web/test/data/schema.py	Mon Dec 07 11:58:17 2015 +0100
+++ b/web/test/data/schema.py	Mon Dec 14 14:29:22 2015 +0100
@@ -96,6 +96,9 @@
 class Filesystem(EntityType):
     name = String()
 
+class DirectoryPermission(EntityType):
+    value = String()
+
 class parent_fs(RelationDefinition):
     name = 'parent'
     subject = 'Directory'
@@ -103,6 +106,8 @@
 
 class Directory(EntityType):
     name = String(required=True)
+    has_permission = SubjectRelation('DirectoryPermission', cardinality='*1',
+                                     composite='subject')
 
 class parent_directory(RelationDefinition):
     name = 'parent'