/V4/PrismLibrary/Desktop/Prism.Tests/Events/BackgroundEventSubscriptionFixture.cs

//===================================================================================

// Microsoft patterns & practices

// Composite Application Guidance for Windows Presentation Foundation and Silverlight

//===================================================================================

// Copyright (c) Microsoft Corporation.  All rights reserved.

// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY

// OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT

// LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND

// FITNESS FOR A PARTICULAR PURPOSE.

//===================================================================================

// The example companies, organizations, products, domain names,

// e-mail addresses, logos, people, places, and events depicted

// herein are fictitious.  No association with any real company,

// organization, product, domain name, email address, logo, person,

// places, or events is intended or should be inferred.

//===================================================================================

using System;

using System.Threading;

using Microsoft.Practices.Prism.Tests.Mocks;

using Microsoft.Practices.Prism.Events;

using Microsoft.VisualStudio.TestTools.UnitTesting;



namespace Microsoft.Practices.Prism.Tests.Events

{

    [TestClass]

    public class BackgroundEventSubscriptionFixture

    {

        [TestMethod]

        public void ShouldReceiveDelegateOnDifferentThread()

        {

            int calledThreadId = -1;

            ManualResetEvent completeEvent = new ManualResetEvent(false);

            Action<object> action = delegate

            {

                calledThreadId = Thread.CurrentThread.ManagedThreadId;

                completeEvent.Set();

            };



            IDelegateReference actionDelegateReference = new MockDelegateReference() { Target = action };

            IDelegateReference filterDelegateReference = new MockDelegateReference() { Target = (Predicate<object>)delegate { return true; } };



            var eventSubscription = new BackgroundEventSubscription<object>(actionDelegateReference, filterDelegateReference);





            var publishAction = eventSubscription.GetExecutionStrategy();



            Assert.IsNotNull(publishAction);



            publishAction.Invoke(null);

#if SILVERLIGHT

            completeEvent.WaitOne(5000);

#else

            completeEvent.WaitOne(5000, false);

#endif

            Assert.AreNotEqual(Thread.CurrentThread.ManagedThreadId, calledThreadId);

        }

    }

}