test improvements to ListMonitor

CoreStore/Internal/NSManagedObjectContext+Setup.swift

@@ -84,6 +84,11 @@ internal extension NSManagedObjectContext {
                 
                 context?.performBlock { () -> Void in
                     
+                    let updatedObjects = (note.userInfo?[NSUpdatedObjectsKey] as? [NSManagedObject]) ?? []
+                    for object in updatedObjects {
+                        
+                        context?.objectWithID(object.objectID).willAccessValueForKey(nil)
+                    }
                     context?.mergeChangesFromContextDidSaveNotification(note)
                 }
             }