Schema versions are no longer locked to IFC4 and 2X3. You can now load express schemas at run time.

src/blenderbim/test/tool/test_debug.py

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+# BlenderBIM Add-on - OpenBIM Blender Add-on
+# Copyright (C) 2022 Dion Moult <dion@thinkmoult.com>
+#
+# This file is part of BlenderBIM Add-on.
+#
+# BlenderBIM Add-on is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# BlenderBIM Add-on 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 General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with BlenderBIM Add-on.  If not, see <http://www.gnu.org/licenses/>.
+
+import os
+import bpy
+import ifcopenshell
+import blenderbim.core.tool
+import blenderbim.tool as tool
+from test.bim.bootstrap import NewFile
+from blenderbim.tool.debug import Debug as subject
+from blenderbim.bim.ifc import IfcStore
+
+
+class TestImplementsTool(NewFile):
+    def test_run(self):
+        assert isinstance(subject(), blenderbim.core.tool.Debug)
+
+
+class TestAddSchemaIdentifier(NewFile):
+    def test_run(self):
+        subject.add_schema_identifier(TestLoadExpress().test_run())
+        assert IfcStore.schema_identifiers[-1] == "IFCROGUE"
+
+
+class TestLoadExpress(NewFile):
+    def test_run(self):
+        cwd = os.path.dirname(os.path.realpath(__file__))
+        schema = subject.load_express(os.path.join(cwd, "..", "files", "test.exp"))
+        assert schema.schema_name == "IFCROGUE"
+        return schema