diff -r eac7f5b20f9f -r 2d43c8b30ef0 cubicweb/server/test/data/cubicweb_basket/schema.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cubicweb/server/test/data/cubicweb_basket/schema.py	Tue Mar 19 14:26:51 2019 +0100
@@ -0,0 +1,21 @@
+from yams.buildobjs import EntityType, RelationDefinition, String, RichString
+from cubicweb.schema import ERQLExpression
+
+
+class Basket(EntityType):
+    """a basket contains a set of other entities"""
+    __permissions__ = {
+        'read':   ('managers', ERQLExpression('X owned_by U'),),
+        'add':    ('managers', 'users',),
+        'delete': ('managers', 'owners',),
+        'update': ('managers', 'owners',),
+        }
+
+    name = String(required=True, indexed=True, internationalizable=True,
+                  maxsize=128)
+    description = RichString(fulltextindexed=True)
+
+
+class in_basket(RelationDefinition):
+    subject = '*'
+    object = 'Basket'