Fix bug where syncing an object removed from the collection tree breaks.

src/blenderbim/test/bim/feature/demo.feature

@@ -5,41 +5,44 @@
 
 # ############################################################################ #
 
-# This allows us to write full integration tests that test how all systems work
-# as a whole. Whilst other tests focus on portions of the software, these tests
-# simulate what happens when a user opens Blender, presses buttons, and does
-# things.
+# Note: these tests are commented out as they are for learning purposes only. If
+# you want to run these tests, uncomment it :)
 
-# These tests read like english. You can see all the possible sentences defined
-# in test_feature.py. Most of the time, there is already a sentence defined for
-# what you want to test.
-
-@demo
-Feature: Demo
-
-# Every operator has at least one scenario associated with it to test it.
-Scenario: Demonstrate hello world
-    Given an empty IFC project
-    When I press "bim.demonstrate_hello_world"
-    # Blender doesn't have a way of testing that things are visible in the
-    # interface and layout. We can check properties, and whats in the 3D
-    # scenegraph, but not layout. There is no "DOM" like in web applications.
-    # Too bad, we can't check the results, but we still write the test, that way
-    # we can still check for errors like crashes or Python errors, like a "smoke
-    # test".
-    Then nothing happens
-
-# This operator has two scenarios because there are two possibilities of a user
-# interacting with it.
-Scenario: Demonstrate rename project - with a name provided
-    Given an empty IFC project
-    When I set "scene.BIMDemoProperties.name" to "Foobar"
-    And I press "bim.demonstrate_rename_project"
-    Then the object "IfcProject/Foobar" is an "IfcProject"
-
-# This is the other possible scenario for the rename project operator.
-Scenario: Demonstrate rename project - with no name
-    Given an empty IFC project
-    When I set "scene.BIMDemoProperties.name" to ""
-    And I press "bim.demonstrate_rename_project"
-    Then the object "IfcProject/My Project" is an "IfcProject"
+#|# This allows us to write full integration tests that test how all systems work
+#|# as a whole. Whilst other tests focus on portions of the software, these tests
+#|# simulate what happens when a user opens Blender, presses buttons, and does
+#|# things.
+#|
+#|# These tests read like english. You can see all the possible sentences defined
+#|# in test_feature.py. Most of the time, there is already a sentence defined for
+#|# what you want to test.
+#|
+#|@demo
+#|Feature: Demo
+#|
+#|# Every operator has at least one scenario associated with it to test it.
+#|Scenario: Demonstrate hello world
+#|    Given an empty IFC project
+#|    When I press "bim.demonstrate_hello_world"
+#|    # Blender doesn't have a way of testing that things are visible in the
+#|    # interface and layout. We can check properties, and whats in the 3D
+#|    # scenegraph, but not layout. There is no "DOM" like in web applications.
+#|    # Too bad, we can't check the results, but we still write the test, that way
+#|    # we can still check for errors like crashes or Python errors, like a "smoke
+#|    # test".
+#|    Then nothing happens
+#|
+#|# This operator has two scenarios because there are two possibilities of a user
+#|# interacting with it.
+#|Scenario: Demonstrate rename project - with a name provided
+#|    Given an empty IFC project
+#|    When I set "scene.BIMDemoProperties.name" to "Foobar"
+#|    And I press "bim.demonstrate_rename_project"
+#|    Then the object "IfcProject/Foobar" is an "IfcProject"
+#|
+#|# This is the other possible scenario for the rename project operator.
+#|Scenario: Demonstrate rename project - with no name
+#|    Given an empty IFC project
+#|    When I set "scene.BIMDemoProperties.name" to ""
+#|    And I press "bim.demonstrate_rename_project"
+#|    Then the object "IfcProject/My Project" is an "IfcProject"

src/blenderbim/test/bim/test_feature.py

@@ -184,7 +184,7 @@ def the_object_name_is_placed_in_the_collection_collection(name, collection):
 def additionally_the_object_name_is_selected(name):
     obj = bpy.context.scene.objects.get(name)
     if not obj:
-        assert False, 'The object "{name}" could not be selected'
+        assert False, f'The object "{name}" could not be selected'
     bpy.context.view_layer.objects.active = obj
     obj.select_set(True)