feat: schema validation, add choice + zeroOrMore for DataObjectGroup (closes #35)

--HG--
branch : seda21

cubicweb_seda/entities/profile_generation.py

@@ -757,11 +757,13 @@ class SEDA22RelaxNGExport(SEDA2RelaxNGExport):
             if nodes or opt_nodes:
                 # insert after definition of dop's id attribute
                 for node in chain(nodes, opt_nodes):
+                    zeroormore = self.element("rng:zeroOrMore")
+                    choice = self.element("rng:choice", zeroormore)
+                    dop[0].addnext(zeroormore)
                     # insert DataObjectGroup
                     group = self.element(
-                        "rng:element", attributes={"name": "DataObjectGroup"}
+                        "rng:element", choice, attributes={"name": "DataObjectGroup"}
                     )
-                    dop[0].addnext(group)
                     group.append(node)
 
 

test/test_profile_generation.py

@@ -534,7 +534,7 @@ class SEDA2RNGExportTC(RelaxNGTestMixin, CubicWebTC):
             profile = self.profile_etree(transfer)
             dop = self.get_element(profile, "DataObjectPackage")
             self.assertEqual(
-                len(self.xpath(dop, './rng:element[@name="DataObjectGroup"]/*')), 3
+                len(self.xpath(dop, './rng:zeroOrMore/rng:choice/rng:element[@name="DataObjectGroup"]/*')), 3
             )
             # setting some cardinality to 1 will remove rng:optional parent of the DataObjectPackage
             # and BinaryDataObject nodes
@@ -542,7 +542,7 @@ class SEDA2RNGExportTC(RelaxNGTestMixin, CubicWebTC):
             profile = self.profile_etree(transfer)
             dop = self.get_element(profile, "DataObjectPackage")
             self.assertEqual(
-                len(self.xpath(dop, './rng:element[@name="DataObjectGroup"]/*')), 3
+                len(self.xpath(dop, './rng:zeroOrMore/rng:choice/rng:element[@name="DataObjectGroup"]/*')), 3
             )
 
     def test_transfer_annotation(self):