/V2/trunk/RI/Desktop/StockTraderRI.Modules.News.Tests/Controllers/NewsControllerFixture.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 Microsoft.Practices.Composite.Events;

using Microsoft.Practices.Composite.Presentation.Events;

using Microsoft.VisualStudio.TestTools.UnitTesting;

using StockTraderRI.Infrastructure;

using StockTraderRI.Infrastructure.Models;

using StockTraderRI.Modules.News.Article;

using StockTraderRI.Modules.News.Controllers;

using StockTraderRI.Modules.News.Tests.Mocks;

using Microsoft.Practices.Composite.Regions;



namespace StockTraderRI.Modules.News.Tests.Controllers

{

    [TestClass]

    public class NewsControllerFixture

    {

        [TestMethod]

        public void ShowNewsResolvesPresenterAndCallsSetTickerSymbolOnItAndAddsNamedViewToRegion()

        {

            var presenter = new MockArticlePresentationModel();

            var eventAggregator = new MockEventAggregator();

            eventAggregator.AddMapping<TickerSymbolSelectedEvent>(new MockTickerSymbolSelectedEvent());

            var controller = new NewsController(CreateRegionManager(), presenter, eventAggregator, new MockNewsReaderPresenter());



            controller.ShowNews("Test");



            Assert.IsNotNull(presenter.SetTickerSymbolArgumentCompanySymbol);

            Assert.AreEqual("Test", presenter.SetTickerSymbolArgumentCompanySymbol);

        }



        [TestMethod]

        public void ControllerShowNewsWhenRasingGlobalEvent()

        {

            var presenter = new MockArticlePresentationModel();

            var eventAggregator = new MockEventAggregator();

            var tickerSymbolSelectedEvent = new MockTickerSymbolSelectedEvent();

            eventAggregator.AddMapping<TickerSymbolSelectedEvent>(tickerSymbolSelectedEvent);

            var controller = new NewsController(CreateRegionManager(), presenter, eventAggregator, new MockNewsReaderPresenter());



            controller.Run();



            Assert.IsNotNull(tickerSymbolSelectedEvent.SubscribeArgumentAction);



            tickerSymbolSelectedEvent.SubscribeArgumentAction("TEST_SYMBOL");

            Assert.AreEqual("TEST_SYMBOL", presenter.SetTickerSymbolArgumentCompanySymbol);

        }



        [TestMethod]

        public void ShouldNotifyReaderWhenCurrentNewsArticleChanges()

        {

            var presenter = new MockArticlePresentationModel();

            var eventAggregator = new MockEventAggregator();

            eventAggregator.AddMapping<TickerSymbolSelectedEvent>(new MockTickerSymbolSelectedEvent());

            var newsReaderPresenter = new MockNewsReaderPresenter();

            var controller = new NewsController(CreateRegionManager(), presenter, eventAggregator, newsReaderPresenter);



            controller.CurrentNewsArticleChanged(new NewsArticle() { Title = "SomeTitle", Body = "Newsbody" });



            Assert.IsTrue(newsReaderPresenter.SetNewsArticleCalled);

        }



        [TestMethod]

        public void ControllerShowNewsViewWhenArticlePresenterReceivesEvent()

        {

            var articlePresentationModel = new MockArticlePresentationModel();

            var eventAggregator = new MockEventAggregator();

            eventAggregator.AddMapping<TickerSymbolSelectedEvent>(new MockTickerSymbolSelectedEvent());

            var newsReaderPresenter = new MockNewsReaderPresenter();

            var regionManager = CreateRegionManager();

            var shellRegion = (MockRegion)regionManager.Regions["SecondaryRegion"];



            var controller = new NewsController(regionManager, articlePresentationModel, eventAggregator, newsReaderPresenter);



            controller.ShowNewsReader();



            Assert.IsTrue(shellRegion.ActivateCalled);

            Assert.AreEqual(newsReaderPresenter.View, shellRegion.ActivateArg);

        }



        private MockRegionManager CreateRegionManager()

        {

            var regionManager = new MockRegionManager();

            regionManager.Regions.Add("SecondaryRegion", new MockRegion());

            regionManager.Regions.Add("NewsRegion", new MockRegion());

            regionManager.Regions.Add("ResearchRegion", new MockRegion());



            return regionManager;

        }



        internal class MockArticlePresentationModel : IArticlePresentationModel

        {

            public MockArticleView MockArticleView = new MockArticleView();

            public string SetTickerSymbolArgumentCompanySymbol;

            public void SetTickerSymbol(string companySymbol)

            {

                SetTickerSymbolArgumentCompanySymbol = companySymbol;

            }



            public IArticleView View

            {

                get { return MockArticleView; }

            }



            public INewsController Controller { get; set; }

        }



        internal class MockTickerSymbolSelectedEvent : TickerSymbolSelectedEvent

        {

            public Action<string> SubscribeArgumentAction;

            public Predicate<string> SubscribeArgumentFilter;

            public override SubscriptionToken Subscribe(Action<string> action, ThreadOption threadOption, bool keepSubscriberReferenceAlive, Predicate<string> filter)

            {

                SubscribeArgumentAction = action;

                SubscribeArgumentFilter = filter;

                return null;

            }

        }

    }



    internal class MockNewsReaderPresenter : INewsReaderPresenter

    {

        public bool SetNewsArticleCalled { get; set; }



        public INewsReaderView View { get; set; }



        public MockNewsReaderPresenter()

        {

            View = new MockNewsReaderView();

        }



        public void SetNewsArticle(NewsArticle article)

        {

            SetNewsArticleCalled = true;

        }

    }

}