feat(test): Add attribute owl thing test

test/data/test_attribute_owl_thing.owl

+@prefix : <http://loutre.fr/>.
+@prefix owl: <http://www.w3.org/2002/07/owl#>.
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>.
+@prefix xsd: <http://www.w3.org/2001/XMLSchema#>.
+
+:FirstClass a owl:Class.
+:SecondClass a owl:Class.
+
+:toto a owl:DatatypeProperty;
+    rdfs:domain owl:Thing.

test/data/test_attribute_owl_thing.yams

+from yams.buildobjs import *
+
+class SecondClass(EntityType):
+    toto = String()
+
+class FirstClass(EntityType):
+    toto = String()
+

test/test_owl2yams.py

@@ -49,6 +49,12 @@
             "test_relation_without_domain_range.yams",
         )
 
+    def test_transform_attribute_owl_thing(self):
+        self._load_owl_and_yams(
+            "test_attribute_owl_thing.owl",
+            "test_attribute_owl_thing.yams",
+        )
+
     def test_raise_multi_class(self):
         with self.assertRaises(ValueError):
             self._load_owl_and_yams("test_multi_class.owl")