When assigning types, your preference of dynamic voids are now preserved.

src/blenderbim/test/bim/feature/type.feature

@@ -0,0 +1,17 @@
+@type
+Feature: Type
+
+Scenario: Assign type
+    Given an empty IFC project
+    And I add a cube
+    And the object "Cube" is selected
+    And I set "scene.BIMRootProperties.ifc_class" to "IfcWall"
+    And I press "bim.assign_class"
+    And I add an empty
+    And the object "Empty" is selected
+    And I set "scene.BIMRootProperties.ifc_product" to "IfcElementType"
+    And I set "scene.BIMRootProperties.ifc_class" to "IfcWallType"
+    And I press "bim.assign_class"
+    When the variable "type" is "{ifc}.by_type('IfcWallType')[0].id()"
+    And I press "bim.assign_type(relating_type={type}, related_object="IfcWall/Cube")"
+    Then nothing happens

src/blenderbim/test/core/bootstrap.py

@@ -77,6 +77,13 @@ def owner():
     prophet.verify()
 
 
+@pytest.fixture
+def type():
+    prophet = Prophecy(blenderbim.core.tool.Type)
+    yield prophet
+    prophet.verify()
+
+
 @pytest.fixture
 def voider():
     prophet = Prophecy(blenderbim.core.tool.Voider)

src/blenderbim/test/core/test_geometry.py

@@ -179,7 +179,7 @@ class TestAddRepresentation:
 
 
 class TestSwitchRepresentation:
-    def test_run(self, ifc, geometry, style, surveyor):
+    def test_switching_to_a_freshly_reloaded_representation(self, geometry):
         geometry.resolve_mapped_representation("mapped_rep").should_be_called().will_return("representation")
         geometry.get_representation_data("representation").should_be_called().will_return("data")
         geometry.import_representation(
@@ -199,3 +199,32 @@ class TestSwitchRepresentation:
             enable_dynamic_voids=True,
             is_global=True,
         )
+
+    def test_switching_to_an_existing_representation(self, geometry):
+        geometry.resolve_mapped_representation("mapped_rep").should_be_called().will_return("representation")
+        geometry.get_representation_data("representation").should_be_called().will_return("data")
+        geometry.change_object_data("obj", "data", is_global=True).should_be_called()
+        geometry.is_body_representation("representation").should_be_called().will_return(True)
+        geometry.create_dynamic_voids("obj").should_be_called()
+        subject.switch_representation(
+            geometry,
+            obj="obj",
+            representation="mapped_rep",
+            should_reload=False,
+            enable_dynamic_voids=True,
+            is_global=True,
+        )
+
+    def test_switching_to_non_dynamic_baked_voids(self, geometry):
+        geometry.resolve_mapped_representation("mapped_rep").should_be_called().will_return("representation")
+        geometry.get_representation_data("representation").should_be_called().will_return("data")
+        geometry.change_object_data("obj", "data", is_global=False).should_be_called()
+        geometry.clear_dynamic_voids("obj").should_be_called()
+        subject.switch_representation(
+            geometry,
+            obj="obj",
+            representation="mapped_rep",
+            should_reload=False,
+            enable_dynamic_voids=False,
+            is_global=False,
+        )

src/blenderbim/test/core/test_type.py

@@ -0,0 +1,61 @@
+# BlenderBIM Add-on - OpenBIM Blender Add-on
+# Copyright (C) 2021 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 blenderbim.core.type as subject
+from test.core.bootstrap import ifc, geometry, type
+
+
+class TestAssignType:
+    def test_assigning_and_switching_preferably_to_a_body_representation(self, ifc, geometry, type):
+        ifc.run("type.assign_type", related_object="element", relating_type="type").should_be_called()
+        type.get_body_representation("element").should_be_called().will_return("mapped_rep")
+        ifc.get_object("element").should_be_called().will_return("obj")
+        type.has_dynamic_voids("obj").should_be_called().will_return(False)
+
+        geometry.resolve_mapped_representation("mapped_rep").should_be_called().will_return("representation")
+        geometry.get_representation_data("representation").should_be_called().will_return("data")
+        geometry.change_object_data("obj", "data", is_global=False).should_be_called()
+        geometry.clear_dynamic_voids("obj").should_be_called()
+
+        type.disable_editing("obj").should_be_called()
+
+        subject.assign_type(ifc, geometry, type, element="element", type="type")
+
+    def test_assigning_and_switching_to_any_representation_as_a_fallback(self, ifc, geometry, type):
+        ifc.run("type.assign_type", related_object="element", relating_type="type").should_be_called()
+        type.get_body_representation("element").should_be_called().will_return(None)
+        type.get_any_representation("element").should_be_called().will_return("mapped_rep")
+        ifc.get_object("element").should_be_called().will_return("obj")
+        type.has_dynamic_voids("obj").should_be_called().will_return(False)
+
+        geometry.resolve_mapped_representation("mapped_rep").should_be_called().will_return("representation")
+        geometry.get_representation_data("representation").should_be_called().will_return("data")
+        geometry.change_object_data("obj", "data", is_global=False).should_be_called()
+        geometry.clear_dynamic_voids("obj").should_be_called()
+
+        type.disable_editing("obj").should_be_called()
+
+        subject.assign_type(ifc, geometry, type, element="element", type="type")
+
+    def test_assigning_and_not_changing_representation_if_not_available(self, ifc, type):
+        ifc.run("type.assign_type", related_object="element", relating_type="type").should_be_called()
+        type.get_body_representation("element").should_be_called().will_return(None)
+        type.get_any_representation("element").should_be_called().will_return(None)
+        ifc.get_object("element").should_be_called().will_return("obj")
+        type.disable_editing("obj").should_be_called()
+        subject.assign_type(ifc, geometry, type, element="element", type="type")

src/blenderbim/test/tool/test_type.py

@@ -0,0 +1,89 @@
+# BlenderBIM Add-on - OpenBIM Blender Add-on
+# Copyright (C) 2021 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 bpy
+import ifcopenshell
+import blenderbim.core.tool
+import blenderbim.tool as tool
+from test.bim.bootstrap import NewFile
+from blenderbim.tool.type import Type as subject
+
+
+class TestImplementsTool(NewFile):
+    def test_run(self):
+        assert isinstance(subject(), blenderbim.core.tool.Type)
+
+
+class TestDisableEditing(NewFile):
+    def test_run(self):
+        obj = bpy.data.objects.new("Object", None)
+        obj.BIMTypeProperties.is_editing_type = True
+        subject.disable_editing(obj)
+        assert obj.BIMTypeProperties.is_editing_type is False
+
+
+class TestGetAnyRepresentation(NewFile):
+    def test_get_product_representation(self):
+        ifc = ifcopenshell.file()
+        representation = ifc.createIfcShapeRepresentation()
+        element = ifc.createIfcWall(Representation=ifc.createIfcProductRepresentation(Representations=[representation]))
+        assert subject.get_any_representation(element) == representation
+
+    def test_get_type_product_representation(self):
+        ifc = ifcopenshell.file()
+        representation = ifc.createIfcShapeRepresentation()
+        element = ifc.createIfcWallType(
+            RepresentationMaps=[ifc.createIfcRepresentationMap(MappedRepresentation=representation)]
+        )
+        assert subject.get_any_representation(element) == representation
+
+
+class TestGetBodyRepresentation(NewFile):
+    def test_get_product_representation(self):
+        ifc = ifcopenshell.file()
+        rep = ifc.createIfcShapeRepresentation(ContextOfItems=ifc.createIfcGeometricRepresentationSubContext())
+        body_rep = ifc.createIfcShapeRepresentation(
+            ContextOfItems=ifc.createIfcGeometricRepresentationSubContext(ContextIdentifier="Body")
+        )
+        element = ifc.createIfcWall(Representation=ifc.createIfcProductRepresentation(Representations=[rep, body_rep]))
+        assert subject.get_body_representation(element) == body_rep
+
+    def test_get_type_product_representation(self):
+        ifc = ifcopenshell.file()
+        rep = ifc.createIfcShapeRepresentation(ContextOfItems=ifc.createIfcGeometricRepresentationSubContext())
+        body_rep = ifc.createIfcShapeRepresentation(
+            ContextOfItems=ifc.createIfcGeometricRepresentationSubContext(ContextIdentifier="Body")
+        )
+        element = ifc.createIfcWallType(
+            RepresentationMaps=[
+                ifc.createIfcRepresentationMap(MappedRepresentation=rep),
+                ifc.createIfcRepresentationMap(MappedRepresentation=body_rep),
+            ]
+        )
+        assert subject.get_body_representation(element) == body_rep
+
+
+class TestHasDynamicVoids(NewFile):
+    def test_run(self):
+        obj = bpy.data.objects.new("Object", None)
+        assert subject.has_dynamic_voids(obj) is False
+
+    def test_checking_modifiers(self):
+        obj = bpy.data.objects.new("Object", bpy.data.meshes.new("Mesh"))
+        obj.modifiers.new("IfcOpeningElement", "BOOLEAN")
+        assert subject.has_dynamic_voids(obj) is True