Fix #2898. You can now copy materials from the materials tab.

src/ifcopenshell-python/test/api/material/test_copy_material.py

@@ -0,0 +1,61 @@
+# IfcOpenShell - IFC toolkit and geometry engine
+# Copyright (C) 2023 Dion Moult <dion@thinkmoult.com>
+#
+# This file is part of IfcOpenShell.
+#
+# IfcOpenShell is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# IfcOpenShell is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with IfcOpenShell.  If not, see <http://www.gnu.org/licenses/>.
+
+import test.bootstrap
+import ifcopenshell.api
+import ifcopenshell.util.element
+
+
+class TestCopyMaterial(test.bootstrap.IFC4):
+    def test_copy_a_single_material(self):
+        material = ifcopenshell.api.run("material.add_material", self.file, name="CON01")
+        new = ifcopenshell.api.run("material.copy_material", self.file, material=material)
+        assert new.Name == "CON01"
+        assert len(self.file.by_type("IfcMaterial")) == 2
+
+    def test_assignments_are_not_copied(self):
+        element = ifcopenshell.api.run("root.create_entity", self.file, ifc_class="IfcWall")
+        material = ifcopenshell.api.run("material.add_material", self.file, name="CON01")
+        ifcopenshell.api.run("material.assign_material", self.file, product=element, material=material)
+        new = ifcopenshell.api.run("material.copy_material", self.file, material=material)
+        assert material.AssociatedTo
+        assert not new.AssociatedTo
+
+    def test_copy_a_material_with_properties(self):
+        material = ifcopenshell.api.run("material.add_material", self.file, name="CON01")
+        pset = ifcopenshell.api.run("pset.add_pset", self.file, product=material, name="Foo_Bar")
+        ifcopenshell.api.run("pset.edit_pset", self.file, pset=pset, properties={"foo": "bar"})
+        new = ifcopenshell.api.run("material.copy_material", self.file, material=material)
+        assert new.Name == "CON01"
+        assert len(self.file.by_type("IfcMaterial")) == 2
+        assert new.HasProperties[0] != material.HasProperties[0]
+        assert new.HasProperties[0].Properties[0] != material.HasProperties[0].Properties[0]
+        assert ifcopenshell.util.element.get_pset(new, "Foo_Bar", "foo") == "bar"
+
+    def test_copy_a_material_with_a_style_representation(self):
+        ifcopenshell.api.run("root.create_entity", self.file, ifc_class="IfcProject")
+        context = ifcopenshell.api.run("context.add_context", self.file, context_type="Model")
+        material = ifcopenshell.api.run("material.add_material", self.file, name="CON01")
+        style = ifcopenshell.api.run("style.add_style", self.file)
+        ifcopenshell.api.run("style.assign_material_style", self.file, material=material, style=style, context=context)
+        new = ifcopenshell.api.run("material.copy_material", self.file, material=material)
+        assert new.Name == "CON01"
+        assert len(self.file.by_type("IfcMaterialDefinitionRepresentation")) == 2
+        assert new.HasRepresentation[0] != material.HasRepresentation[0]
+        assert new.HasRepresentation[0].Representations[0] != material.HasRepresentation[0].Representations[0]
+        assert new.HasRepresentation[0].Representations[0].ContextOfItems == context