Implement purge map unit when removing georeferencing and removing 2X3 and 4X3 georeferencing in API

src/ifcopenshell-python/test/api/georeference/test_remove_georeferencing.py

@@ -0,0 +1,44 @@
+# IfcOpenShell - IFC toolkit and geometry engine
+# Copyright (C) 2022 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.root
+import ifcopenshell.api.context
+import ifcopenshell.api.georeference
+import ifcopenshell.util.element
+
+
+class TestRemoveGeoreferencing(test.bootstrap.IFC4):
+    def test_removing_georeferencing(self):
+        ifcopenshell.api.root.create_entity(self.file, ifc_class="IfcProject")
+        ifcopenshell.api.context.add_context(self.file, "Model")
+        ifcopenshell.api.georeference.add_georeferencing(self.file)
+        ifcopenshell.api.georeference.remove_georeferencing(self.file)
+        assert len(self.file.by_type("IfcMapConversion")) == 0
+        assert len(self.file.by_type("IfcProjectedCRS")) == 0
+
+
+class TestAddGeoreferencingIFC2X3(test.bootstrap.IFC2X3):
+    def test_adding_georeferencing(self):
+        project = ifcopenshell.api.root.create_entity(self.file, ifc_class="IfcProject")
+        ifcopenshell.api.georeference.add_georeferencing(self.file)
+        ifcopenshell.api.georeference.remove_georeferencing(self.file)
+        conversion = ifcopenshell.util.element.get_pset(project, "ePSet_MapConversion", verbose=True)
+        crs = ifcopenshell.util.element.get_pset(project, "ePSet_ProjectedCRS", verbose=True)
+        assert not conversion
+        assert not crs