Fixed void tests after d3d2c36

src/blenderbim/blenderbim/bim/module/void/operator.py

@@ -29,6 +29,14 @@ class AddOpening(bpy.types.Operator, tool.Ifc.Operator):
     bl_idname = "bim.add_opening"
     bl_label = "Add Opening"
     bl_options = {"REGISTER", "UNDO"}
+    bl_description = "Adds an opening to an element.\n" \
+        "Need to select two elements, order of selection is not important"
+
+    @classmethod
+    def poll(cls, context):
+        if len(context.selected_objects) != 2:
+            cls.poll_message_set("Select two elements to add an opening")
+        return True
 
     def _execute(self, context):
         props = context.scene.BIMModelProperties

src/blenderbim/test/bim/feature/void.feature

@@ -81,20 +81,25 @@ Scenario: Add an opening to Element B with a void that already voids Element A
     And the object "Cube" is selected
     And I set "scene.BIMRootProperties.ifc_class" to "IfcWall"
     And I press "bim.assign_class"
+
     And I add a cube
     And the object "Cube" is selected
     And I press "bim.assign_class"
+
     And I press "bim.add_potential_opening"
     And the object "Opening" is selected
     And additionally the object "IfcWall/Cube" is selected
     And I press "bim.add_opening"
+
     And the object "IfcWall/Cube" is selected
     And I press "bim.show_openings"
+
     When the object "IfcOpeningElement/Opening" is selected
     And additionally the object "IfcWall/Cube.001" is selected
     And I press "bim.add_opening"
-    Then the object "IfcWall/Cube" is voided by "Opening"
-    And the object "IfcWall/Cube.001" is not voided by "Opening"
+
+    Then the object "IfcWall/Cube" is not voided by "Opening"
+    And the object "IfcWall/Cube.001" is voided by "Opening"
 
 Scenario: Remove opening
     Given an empty IFC project