Add support for IfcTester and predefined properties

src/ifctester/ifctester/facet.py

@@ -464,7 +464,10 @@ class Property(Facet):
                 for prop_entity in self.get_properties(pset_entity):
                     if prop_entity.Name not in props[pset_name].keys():
                         continue
-                    if prop_entity.is_a("IfcPropertySingleValue"):
+                    if not isinstance(prop_entity, ifcopenshell.entity_instance):
+                        # Predefined properties are special :(
+                        pass
+                    elif prop_entity.is_a("IfcPropertySingleValue"):
                         data_type = prop_entity.NominalValue.is_a()
 
                         if data_type != self.measure:
@@ -640,6 +643,12 @@ class Property(Facet):
             return pset.Quantities
         elif pset.is_a("IfcMaterialProperties") or pset.is_a("IfcProfileProperties"):
             return pset.Properties
+        elif pset.is_a("IfcPreDefinedPropertySet"):
+            return [
+                type("", (object,), {"Name": k, "Value": v})()
+                for k, v in pset.get_info().items()
+                if not isinstance(v, ifcopenshell.entity_instance)
+            ]
 
 
 class Material(Facet):

src/ifctester/test/test_facet.py

@@ -1076,6 +1076,29 @@ class TestProperty:
         facet = Property(propertySet="Foo_Bar", name="Foo", measure="IfcLabel")
         run("Reference properties are treated as objects and not supported", facet=facet, inst=element, expected=False)
 
+        element = ifcopenshell.api.run("root.create_entity", ifc, ifc_class="IfcDoor")
+        pset = ifc.create_entity(
+            "IfcDoorPanelProperties",
+            GlobalId=ifcopenshell.guid.new(),
+            Name="Foo_Bar",
+            PanelOperation="SWINGING",
+            PanelPosition="LEFT",
+        )
+        ifc.create_entity(
+            "IfcRelDefinesByProperties",
+            GlobalId=ifcopenshell.guid.new(),
+            RelatedObjects=[element],
+            RelatingPropertyDefinition=pset,
+        )
+        facet = Property(
+            propertySet="Foo_Bar", name="PanelOperation", value="SWINGING", measure="IfcDoorPanelOperationEnum"
+        )
+        run("Predefined properties are supported but discouraged 1/2", facet=facet, inst=element, expected=True)
+        facet = Property(
+            propertySet="Foo_Bar", name="PanelOperation", value="SWONGING", measure="IfcDoorPanelOperationEnum"
+        )
+        run("Predefined properties are supported but discouraged 2/2", facet=facet, inst=element, expected=False)
+
         facet = Property(propertySet="Foo_Bar", name="Foo", measure="IfcLengthMeasure")
         element = ifcopenshell.api.run("root.create_entity", ifc, ifc_class="IfcWall")
         qto = ifcopenshell.api.run("pset.add_qto", ifc, product=element, name="Foo_Bar")