bonsai: fix failing test_copy_with_new_geometry_copied_from_the_old

Move has_material_styles into the Root tool so it can be mocked in core
unit tests; the private function was calling ifcopenshell.util.element
directly, bypassing the tool layer and crashing the test.

Generated with the assistance of an AI coding tool.

src/bonsai/bonsai/core/tool.py

@@ -894,6 +894,7 @@ class Root:
     def get_default_container(cls): pass
     def get_element_representation(cls, element, context): pass
     def get_element_type(cls, element): pass
+    def has_material_styles(cls, element): pass
     def get_object_name(cls, obj): pass
     def get_object_representation(cls, obj): pass
     def get_representation_context(cls, representation): pass

src/bonsai/bonsai/tool/root.py

@@ -54,6 +54,12 @@ class Root(bonsai.core.tool.Root):
         new.obj = obj
         new.name = opening_type
 
+    @classmethod
+    def has_material_styles(cls, element: ifcopenshell.entity_instance) -> bool:
+        """Return True if any constituent material of element has a style representation."""
+        materials = ifcopenshell.util.element.get_materials(element)
+        return any(getattr(m, "HasRepresentation", None) for m in materials)
+
     @classmethod
     def assign_body_styles(cls, element: ifcopenshell.entity_instance, obj: bpy.types.Object) -> None:
         # Should this even be here? Should it be in the geometry tool?

src/bonsai/test/core/test_root.py

@@ -40,8 +40,7 @@ class TestCopyClass:
         collector.assign("obj").should_be_called()
         subject.copy_class(ifc, collector, geometry, root, obj="obj")
 
-    # def test_copy_with_new_geometry_copied_from_the_old(self, ifc, collector, geometry, root):
-    def test_AAAAAAAAAAAA(self, ifc, collector, geometry, root):
+    def test_copy_with_new_geometry_copied_from_the_old(self, ifc, collector, geometry, root):
         ifc.get_entity("obj").should_be_called().will_return("original_element")
         root.is_element_a("original_element", "IfcRelSpaceBoundary").should_be_called().will_return(False)
         root.get_object_representation("obj").should_be_called().will_return("representation")