WR test cases for MLS / usedin()

src/ifcopenshell-python/test/fixtures/rules/generate_17.py

@@ -0,0 +1,26 @@
+import time
+import ifcopenshell
+
+for i, nm in enumerate(("no-mls", "mls", "mlsu")):
+    f = ifcopenshell.file(schema="IFC2X3")
+    p = f.createIfcPerson(Id="tfk", GivenName="Thomas")
+    o = f.createIfcOrganization(Name="AECgeeks")
+    pando = f.createIfcPersonAndOrganization(p, o)
+    appl = f.createIfcApplication(o, ifcopenshell.version, "IfcOpenShell", f"IfcOpenShell {ifcopenshell.version}")
+    units = f.createIfcUnitAssignment(Units=[f.createIfcSIUnit(None, "LENGTHUNIT", None, "METRE")])
+    ownerhist = f.createIfcOwnerHistory(pando, appl, ChangeAction="ADDED", CreationDate=int(time.time()))
+    wall = f.createIfcWallStandardCase(
+        ifcopenshell.guid.new(),
+        ownerhist
+    )
+    if i in (1,2):
+        mls = f.createIfcMaterialLayerSet([f.createIfcMaterialLayer(None, 0.1)])
+        if i == 2:
+            mls = f.createIfcMaterialLayerSetUsage(mls, 'AXIS2', 'POSITIVE', 0.)
+        f.createIfcRelAssociatesMaterial(
+            ifcopenshell.guid.new(),
+            ownerhist,
+            RelatedObjects=[wall],
+            RelatingMaterial=mls
+        )
+    f.write(f"{'pass' if i == 2 else 'fail'}-wall-{nm}-ifc2x3.ifc")