You can now connect, disconnect, and set flow directions of distribution ports in Blender.

src/blenderbim/test/core/test_system.py

@@ -113,3 +113,14 @@ class TestAddPort:
         system.run_root_assign_class(obj="obj", ifc_class="IfcDistributionPort").should_be_called().will_return("port")
         ifc.run("system.assign_port", element="element", port="port").should_be_called()
         subject.add_port(ifc, system, element="element")
+
+
+class TestSetFlowDirection:
+    def test_run(self, ifc, system):
+        system.get_connected_port("port").should_be_called().will_return("port2")
+        ifc.run("system.connect_port", port1="port", port2="port2", direction="direction").should_be_called()
+        subject.set_flow_direction(ifc, system, port="port", direction="direction")
+
+    def test_do_not_set_a_direction_if_port_is_not_connected(self, ifc, system):
+        system.get_connected_port("port").should_be_called().will_return(None)
+        subject.set_flow_direction(ifc, system, port="port", direction="direction")

src/blenderbim/test/tool/test_system.py

@@ -36,9 +36,8 @@ class TestCreateEmptyAtCursorWithElementOrientation(NewFile):
         obj = bpy.data.objects.new("Object", None)
         element = ifc.createIfcWall()
         tool.Ifc.link(element, obj)
-        bpy.context.scene.cursor.matrix.translation[0] = 5
         obj = subject.create_empty_at_cursor_with_element_orientation(element)
-        assert obj.matrix_world.translation[0] == 5
+        assert obj.matrix_world == bpy.context.scene.cursor.matrix
 
 
 class TestDeleteElementObjects(NewFile):
@@ -83,6 +82,16 @@ class TestExportSystemAttributes(NewFile):
         }
 
 
+class TestGetConnectedPort(NewFile):
+    def test_run(self):
+        ifc = ifcopenshell.file()
+        port1 = ifcopenshell.api.run("system.add_port", ifc)
+        port2 = ifcopenshell.api.run("system.add_port", ifc)
+        ifcopenshell.api.run("system.connect_port", ifc, port1=port1, port2=port2)
+        assert subject.get_connected_port(port1) == port2
+        assert subject.get_connected_port(port2) == port1
+
+
 class TestGetPorts(NewFile):
     def test_run(self):
         ifc = ifcopenshell.file()