type.unassign_type - support batching #4474

src/ifcopenshell-python/test/api/test_api.py

@@ -131,3 +131,11 @@ class TestTemporarySupportForDeprecatedAPIArguments(test.bootstrap.IFC4):
         rel = ifcopenshell.api.run("type.assign_type", self.file, related_object=element1, relating_type=element_type)
         assert ifcopenshell.util.element.get_type(element1) == element_type
         assert rel.is_a("IfcRelDefinesByType")
+
+    @deprecation_check
+    def test_unassigning_a_type(self):
+        element_type = ifcopenshell.api.run("root.create_entity", self.file, ifc_class="IfcWallType")
+        element = ifcopenshell.api.run("root.create_entity", self.file, ifc_class="IfcWall")
+        ifcopenshell.api.run("type.assign_type", self.file, related_objects=[element], relating_type=element_type)
+        ifcopenshell.api.run("type.unassign_type", self.file, related_object=element)
+        assert ifcopenshell.util.element.get_type(element) is None

src/ifcopenshell-python/test/api/type/test_unassign_type.py

@@ -0,0 +1,60 @@
+# IfcOpenShell - IFC toolkit and geometry engine
+# Copyright (C) 2021 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 pytest
+import test.bootstrap
+import ifcopenshell.api
+import ifcopenshell.util.element
+
+
+class TestUnassignType(test.bootstrap.IFC4):
+    def test_unassigning_a_type(self):
+        element_type = ifcopenshell.api.run("root.create_entity", self.file, ifc_class="IfcWallType")
+        element1 = ifcopenshell.api.run("root.create_entity", self.file, ifc_class="IfcWall")
+        element2 = ifcopenshell.api.run("root.create_entity", self.file, ifc_class="IfcWall")
+        ifcopenshell.api.run(
+            "type.assign_type", self.file, related_objects=[element1, element2], relating_type=element_type
+        )
+        ifcopenshell.api.run("type.unassign_type", self.file, related_objects=[element1, element2])
+        assert ifcopenshell.util.element.get_type(element1) is None
+        assert ifcopenshell.util.element.get_type(element2) is None
+
+    def test_the_rel_is_kept_if_there_are_more_typed_elements(self):
+        element_type = ifcopenshell.api.run("root.create_entity", self.file, ifc_class="IfcWallType")
+        element2 = ifcopenshell.api.run("root.create_entity", self.file, ifc_class="IfcWall")
+        element1 = ifcopenshell.api.run("root.create_entity", self.file, ifc_class="IfcWall")
+        ifcopenshell.api.run("type.assign_type", self.file, related_objects=[element1], relating_type=element_type)
+        ifcopenshell.api.run("type.assign_type", self.file, related_objects=[element2], relating_type=element_type)
+        ifcopenshell.api.run("type.unassign_type", self.file, related_objects=[element1])
+        assert len(self.file.by_type("IfcRelDefinesByType")) == 1
+
+    def test_the_rel_is_purged_if_there_are_no_more_typed_elements(self):
+        element_type = ifcopenshell.api.run("root.create_entity", self.file, ifc_class="IfcWallType")
+        context = self.file.createIfcGeometricRepresentationContext()
+        rep = self.file.createIfcShapeRepresentation(ContextOfItems=context)
+        ifcopenshell.api.run("geometry.assign_representation", self.file, product=element_type, representation=rep)
+        ifcopenshell.api.run("material.assign_material", self.file, product=element_type, type="IfcMaterialLayerSet")
+
+        element = ifcopenshell.api.run("root.create_entity", self.file, ifc_class="IfcWall")
+        ifcopenshell.api.run("type.assign_type", self.file, related_objects=[element], relating_type=element_type)
+        ifcopenshell.api.run("type.unassign_type", self.file, related_objects=[element])
+        assert len(self.file.by_type("IfcRelDefinesByType")) == 0
+
+
+class TestUnassignTypeIFC2X3(test.bootstrap.IFC2X3, TestUnassignType):
+    pass