Separated DatabaseManager validation logic into separate method

Common/Database/DatabaseManager.swift

@@ -232,7 +232,7 @@ private extension DatabaseManager
 {
     // MARK: - Saving -
     
-    private func save()
+    func save()
     {
         let backgroundTaskIdentifier = RSTBeginBackgroundTask("Save Database Task")
         
@@ -282,16 +282,12 @@ private extension DatabaseManager
         }
     }
     
-    // MARK: - Notifications -
+    // MARK: - Validation -
     
-    dynamic func managedObjectContextDidSave(notification: NSNotification)
+    func validateManagedObjectSaveWithUserInfo(userInfo: [NSObject : AnyObject])
     {
-        guard let managedObjectContext = notification.object as? NSManagedObjectContext where managedObjectContext.parentContext == self.validationManagedObjectContext else { return }
-        
-        self.validationManagedObjectContext.performBlockAndWait {
-            
         // Remove deleted games from disk
-            if let deletedObjects = notification.userInfo?[NSDeletedObjectsKey] as? Set<NSManagedObject>
+        if let deletedObjects = userInfo[NSDeletedObjectsKey] as? Set<NSManagedObject>
         {
             let games = deletedObjects.filter({ $0 is Game }).map({ self.validationManagedObjectContext.objectWithID($0.objectID) as! Game })
             
@@ -315,9 +311,17 @@ private extension DatabaseManager
         {
             self.validationManagedObjectContext.deleteObject(collection)
         }
+    }
     
+    // MARK: - Notifications -
+    
+    dynamic func managedObjectContextDidSave(notification: NSNotification)
+    {
+        guard let managedObjectContext = notification.object as? NSManagedObjectContext where managedObjectContext.parentContext == self.validationManagedObjectContext else { return }
+        
+        self.validationManagedObjectContext.performBlockAndWait {
+            self.validateManagedObjectSaveWithUserInfo(notification.userInfo ?? [:])
             self.save()
         }
     }
-
 }