DevForce Community Forum : Unit Test And EntityManager.SaveChanges http://www.ideablade.com/forum/ This is an XML content feed of; DevForce Community Forum : DevForce 2009 : Unit Test And EntityManager.SaveChanges Fri, 10 Apr 2026 21:37:20 -700 Fri, 09 Oct 2009 17:17:39 -700 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 9.69 360 www.ideablade.com/forum/RSS_post_feed.asp?TID=1512 DevForce Community Forum http://www.ideablade.com/forum/forum_images/IdeaBlade_logo_tm.png http://www.ideablade.com/forum/ Unit Test And EntityManager.SaveChanges : You can make your PerformLogicAndSave()... http://www.ideablade.com/forum/forum_posts.asp?TID=1512&PID=5610#5610 Author: GregD
Subject: 1512
Posted: 09-Oct-2009 at 5:17pm

You can make your PerformLogicAndSave() method a little more discriminating, so that it only calls EntityManager.SaveChanges() when you want to hit the database; otherwise, you could have it do something else, like persist the changes to a local EntitySet file.

You could have it check to see if you're connected before deciding what to do, but that's quite time-consuming, so it's better to keep some flag that reflects your state of connectedness and/or whether you want to hit the database or not with saves and retrieves.
]]> Fri, 09 Oct 2009 17:17:39 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=1512&PID=5610#5610 Unit Test And EntityManager.SaveChanges : Am I missing the boat on what... http://www.ideablade.com/forum/forum_posts.asp?TID=1512&PID=5604#5604 Author: rkierner
Subject: 1512
Posted: 09-Oct-2009 at 5:23am

Am I missing the boat on what my method should do?  While live, I do want to persist the changes to the DB.  During testing, I obviously want to avoid hitting the DB.  Is there any guidance on how to structure methods/object hierarchy so that my code is testable?
 
Rick
]]> Fri, 09 Oct 2009 05:23:02 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=1512&PID=5604#5604 Unit Test And EntityManager.SaveChanges : SaveChanges() operates against... http://www.ideablade.com/forum/forum_posts.asp?TID=1512&PID=5603#5603 Author: GregD
Subject: 1512
Posted: 08-Oct-2009 at 6:36pm

SaveChanges() operates against the back-end datasource. Therefore you must be connected when performing a save.

You can instantiate an EntityManager, fill it with data from a local EntitySet file, make a bunch of changes, add new entities, save them to another local EntitySet file, etc., all while disconnected. But SaveChanges()? No.
]]> Thu, 08 Oct 2009 18:36:43 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=1512&PID=5603#5603 Unit Test And EntityManager.SaveChanges : I'm trying to write a test... http://www.ideablade.com/forum/forum_posts.asp?TID=1512&PID=5601#5601 Author: rkierner
Subject: 1512
Posted: 08-Oct-2009 at 1:21pm

I'm trying to write a test and I'm running into an issue if I call SaveChanges on the EntityManager object. 

I get the following Exception:
 
"IdeaBlade.EntityModel.EntityManagerSaveException: This EntityManager is not currently connected - Reconnect before attempting to save."
 
Am I missing something or is there a work around for this.  My DomainModelEntityManager class extends from EntityManager and I pass in false to the constructor so that it can run disconnected.

        [TestMethod]
        public void TestMyMethod()
        {
            var mgr = new DomainModelEntityManager(false);
            var myObject = new MyClass { ID = 1};
            mgr.AttachEntity(myObject);
            var myService = new MyService(mgr);
            myService.PerformLogicAndSave(myObject);
        }

       public class MyService{
              public MyService(EntityManager myManager){
                     MyManager = myManager;
              }
              public void PerformLogicAndSave(MyClass myObject){
                     //Do Something to myObject
                     MyManager.SaveChanges();
              }
       }

]]> Thu, 08 Oct 2009 13:21:43 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=1512&PID=5601#5601