I am in the middle of the analysis fase for the project I mentioned in the post about using WCSF for ASP.NET (and Sharepoint) Usercontrols.  I know how I am going to integrate the UserControls into SharePoint in such a way, that the controls can be used in SharePoint and in custom ASP.NET Web applications.
I am going to use the MVP pattern without the help of WCSF or CWAB, but with the help of Unity. I will post an article in more detail about this in the near future.
For now I want to share a simple ASP.NET composite control I need, to make it easier to have watermark functionality for every textbox on a page, without having to add a TextBoxWatermarkExtender for every TextBox.

The way I accomplish this is by creating a composite control with a TextBox and a TextboxWatermarkExtender on it.

The code:

   1:  using System;
   2:  using System.ComponentModel;
   3:  using System.Web.UI;
   4:  using System.Web.UI.WebControls;
   5:  using AjaxControlToolkit;
   6:   
   7:  namespace HC.Web.Controls
   8:  {
   9:   
  10:       [DefaultProperty("Text"),
  11:        ValidationProperty("Text"),
  12:        Description("TextBox with Watermark capabilities"),
  13:        ToolboxData("<{0}:WatermarkTextBox runat=server></{0}:WatermarkTextBox>")]
  14:      public class WatermarkTextBox: CompositeControl
  15:      {
  16:          #region Private members
  17:           private TextBox textBox;
  18:           private TextBoxWatermarkExtender watermarkExtender;
  19:   
  20:           private string _DefaultWatermarkText = "Watermark";
  21:          #endregion
  22:   
  23:          #region Properties
  24:           /// <summary>
  25:           /// Gets the ClientID of the textbox
  26:           /// </summary>
  27:          [Bindable(true),
  28:          Category("Behavior"),
  29:          Description("The TextBoxClientID of the WatermarkTextBox"),
  30:          DefaultValue("")]
  31:          public string TextBoxClientID
  32:           {
  33:               get
  34:               {
  35:                   EnsureChildControls();
  36:                   return textBox.ClientID;
  37:               }
  38:           }
  39:   
  40:           /// <summary>
  41:           /// Gets or sets the Text in the textbox
  42:           /// </summary>
  43:           [Bindable(true),
  44:          Category("Behavior"),
  45:          Description("The text of the textbox"),
  46:          DefaultValue("")]
  47:           public string Text
  48:           {
  49:               get
  50:               {
  51:                   EnsureChildControls();
  52:                   return textBox.Text;
  53:               }
  54:               set
  55:               {
  56:                   EnsureChildControls();
  57:                   textBox.Text = value;
  58:               }
  59:           }
  60:   
  61:           /// <summary>
  62:           /// Gets or sets the CssClass of the Textbox
  63:           /// </summary>
  64:           [Bindable(true),
  65:           Description("The css class that is used when the textbox is in it's normal state"),
  66:           Category("Appearance"),
  67:           DefaultValue("")]
  68:           public override string CssClass
  69:           {
  70:               get
  71:               {
  72:                   EnsureChildControls();
  73:                   return textBox.CssClass;
  74:               }
  75:               set
  76:               {
  77:                   EnsureChildControls();
  78:                   textBox.CssClass = value;
  79:               }
  80:           }
  81:   
  82:           /// <summary>
  83:           /// Gets or sets the CssClass for the watermark state of the Textbox
  84:           /// </summary>
  85:           [Bindable(true),
  86:            Description("The css class that is used when the textbox is in it's watermark state"),
  87:            Category("Appearance"),
  88:            DefaultValue("")]
  89:           public string WatermarkCssClass
  90:           {
  91:               get 
  92:               { 
  93:                   EnsureChildControls();
  94:                   return watermarkExtender.WatermarkCssClass;
  95:               }
  96:               set 
  97:               { 
  98:                   EnsureChildControls();
  99:                   watermarkExtender.WatermarkCssClass = value;
 100:               }
 101:           }
 102:   
 103:           /// <summary>
 104:           /// Gets or sets the Text for the watermark
 105:           /// </summary>
 106:          [Bindable(true),
 107:           Category("Appearance"), 
 108:           Description("The (watermark)text that is shown when the textbox is in it's watermark state"),
 109:           DefaultValue("")]
 110:          public string WatermarkText 
 111:          {
 112:               get 
 113:               { 
 114:                   EnsureChildControls();
 115:                   return watermarkExtender.WatermarkText;
 116:               }
 117:               set 
 118:               { 
 119:                   EnsureChildControls();
 120:                   watermarkExtender.WatermarkText = value;
 121:               }
 122:          }
 123:   
 124:           /// <summary>
 125:           /// Gets or sets DefaultWatermarkText, cannot be empty
 126:           /// </summary>
 127:          [Bindable(true),
 128:          Category("Appearance"),
 129:          Description("The default (watermark)text that is shown when the textbox is in it's watermark state, and the WatermarkText property is empty"),
 130:          DefaultValue("")]
 131:          public string DefaultWatermarkText
 132:          {
 133:              get { return _DefaultWatermarkText; }
 134:              set 
 135:              { 
 136:                  if (value.Length > 0)
 137:                      _DefaultWatermarkText = value; 
 138:              }
 139:          }
 140:          #endregion
 141:   
 142:          protected override void RecreateChildControls()
 143:          {
 144:              EnsureChildControls();
 145:          }
 146:   
 147:          protected override void CreateChildControls()
 148:          {
 149:              SetTextBoxIdIfEmpty();
 150:              this.Controls.Add(textBox);
 151:              watermarkExtender.ID = textBox.ID + "_waterMarkExtender";
 152:              watermarkExtender.TargetControlID = textBox.ID;
 153:   
 154:              if (WatermarkText == "")
 155:              {
 156:                  WatermarkText = DefaultWatermarkText;
 157:              }
 158:              this.Controls.Add(watermarkExtender);
 159:          }
 160:   
 161:          #region Worker Methods
 162:          /// <summary>
 163:          /// Fills textBox ID if empty.
 164:          /// Format: ID + '_textBox'
 165:          /// </summary>
 166:           private void SetTextBoxIdIfEmpty()
 167:          {
 168:              if (string.IsNullOrEmpty(textBox.ID))
 169:              {
 170:                  textBox.ID = this.ID + "_textBox";
 171:              }
 172:          }
 173:          #endregion
 174:        
 175:           #region C'tor
 176:           public WatermarkTextBox()
 177:           {
 178:               textBox = new TextBox();
 179:               watermarkExtender = new TextBoxWatermarkExtender();
 180:           }
 181:           #endregion
 182:   
 183:      }
 184:  }

Listing: 1

As you can see in the code in listing 1,in the override of the CreateChildControls the actual adding of the controls to the control collection of the composite container is done.
It is important to make sure the textbox has a valid ID. Than you need to set the TargetControlID of the TextboxWatermarkExtender equal to the ID of the TextBox and the WatermarkText needs to be filled.

EnsureChildControls()
When you built a composite control make sure to call EnsureChildControls, so you can be sure the controls are accesible and no object reference not set exception is thrown.
A simple but quite useful example.

Henry Cordes
My thoughts exactly…


At the moment I am in the middle of the analysis phase for a project where the product will be constructed of several (User)Controls that contain certain blocks of functionality, these controls together will create the product.
Our first client needs this product to integrate with SharePoint 2007 (MOSS 2007), but my product manager makes it real clear that at least some of the ‘blocks of functionality’ or ‘components’ need to have the possibility be integrated in existing ASP.NET web applications.

So the challenge I face is creating controls that can be integrated inside SharePoint and custom ASP.NET web apps. Another challenge is that we really want to use the MVP, or MVC pattern, to increase the level of (unit)testability and maintainability. 
Also with testability in mind I want to use some kind of IoC container (Inversion of Control), to make it easier to swap out certain functionalities for others (also a Need To Have requirement), be it for unit testing, or swapping out data store's .

Web Client Software Factory
With all these requirements the Web Client Software Factory came to mind, it leverages the Composite Web Application Block and can use Unity (ObjectBuilder) as Dependency Injection or Inversion of Control Container. When I follow the Quick start however it is quite easy to create a webpage that acts as the View and uses a Presenter and a Controller (all interface based!).
The problem I get is when I want to create a UserControl  as a View that acts indepentently with it’s own Presenter and  Controller, as i am seeing it, the WCSF uses the containing page of a UserControl as the part that maps everything together.

I want to make a really independent control, that can exist all by itself. The learning curve was quite steep, because of my lack of knowledge of the WCSF and CWAB.

Approaches
I am not sure which route I will take in the end, but I am trying different approaches:

  1. Using Return of SmartPart to host a UserControl that consists of Usercontrols built using the Web Client Software Factory;
  2. Create a WebPart (derived from CompositeWeb.SharePoint.Web.UI.WebPart) that hosts UserControls (that are derived from CompositeWeb.SharePoint.Web.UI.UserControl), using the CompositeWeb.Sharepoint.dll and guidance published on the WCSF CodePlex site

SmartPart
For now I created both in a really simple form and find that the SmartPart has a real nice deployment model, you install the SmartPart using a installer and you only have to activate the Smartpart in the SiteCollection to make it available in the available Webpart’s list in SharePoint. You than make a folder with the name ‘usercontrols’ in the root of the sharePoint site, where  you put the .ascx files you want to be hosted. The dll belonging to the UserControl and it’s dependencies are to be placed into the bin directory of the same SharePoint site. I read somewhere that the installer sets the site´s security to full trust, but I can not verify that.

WebPart derived from CompositeWeb.SharePoint.Web.UI.WebPart
The Webpart solution gives a real nice compatibility model. You derive from these types and your webpart and UserControls work in SharePoint and in am ASP.NET webapp. This is achieved through the BuildItemWithCurrentContext method in the SPWebClientApplication class (CompositeWeb.SharePoint.dll). This method runs different code depending on the running HttpApplication implementation. You have to manually edit the global.asax file in the root of the SharePoint site. You have to edit the web.config manually to make several changes, one of them is to set the security to full trust! Part of the web.config changes is to add the PublicKeytoken for the webpart in an attribute of the Safecontrol element for the webpart. Furtermore you have to place the assemblies and their dependencies into the bin directory of the Sharepoint site. Of course you could automate these task by creating an installer, but I think it makes clear that there are lots of manual tasks to be done.

At this point in time I have not decided either way, but I will post when I have.

My thoughts exactly…
Henry Cordes


I am really proud that my first .NET Magazine article is publiced.
I wrote this article with my co-worker Dennis van de Laar. The topic is AJAX and Javascript.


Dutch .NET Magazine #22


 Ajax is niet meer weg te denken

It is a small download, it''s PDF and it is Dutch 

Henry Cordes
My thougts exactly...


ASP.NET MVC Preview 3 released!

Published 5/31/2008 by Henry in ASP.NET | C#
Tags: ,

ASP.NET MVC Preview 3 is released. You can download it from here:
http://www.microsoft.com/downloads/details.aspx?FamilyID=92F2A8F0-9243-4697-8F9A-FCF6BC9F66AB&displaylang=en

I took the following quote from ScottGu's blog which is a dutch translation!
Je kan hier een geintegreerd pakket van de ASP.NET MVC Preview 3 setup downloaden. Als je dat wil, kan je ook de ASP.NET MVC Preview 3 framework broncode en de framework unit tests hier downloaden.
Which means something along the line of:
You can download an integrated ASP.NET MVC Preview 3 setup package here.  You can also optionally download the ASP.NET MVC Preview 3 framework source code and framework unit tests here.

The way Microsoft is open about the code they write, is awsome to me.
The 'ScottGu teams' really turning the game upside down, IMHO it is so cool and insightfull to look at the way the MVC Framework team sets up the framework. The opportunity to look at their tests is another learning experience to me.
So download an learn, is what I say!

Henry Cordes
My thoughts exactly...


Unit test controller in MVC Framework

Published 2/9/2008 by Henry in ASP.NET | C#
Tags: ,

I started using the MVC Framework. I wanted to see if it is for me, because I am a big fan of TDD, but with web apps for me at least, it always is a struggle.
After having a bit of a startup problem, I really started to see the point after a while. The decoupling of concerns, with the Controller as entrypoint, that gets the data from a model and hands it over to the View is a really elegant solution.

Model View Presenter
With the MVP pattern (Model View Presenter) the aspx Page was the entrypoint, it delegated the call to the Presenter only to be called again. This is no decoupling.
With MVC the controller is the spider in the web. The greatest advantages I see in this Framework (or designpattern) is:

  • Allows extensive unit testing (use any unit testing framework you want to (MS Test, NUnit, MBUnit, etc).
  • Separation of concerns, all core contracts within the framework are interface based and therefore mockable
  • No more UrlRewriting, you can model your Url's completely(UrlRoutingEngine)
  • Extensible and pluggable (it is possible to use IOC containers like Windsor, Spring.Net, NHibernate, etc)

A picture to show how the project templates look in the Project Explorer, this is how we create an MVCApplication.

New MVC Application Project

By choosing the 'ASP.NET MVC Web Application and Test' projecttemplate, we get a Test project in our solution also. The MvcApplication's structure is structured around folders.
We get a Content folder, where the css file is located. And we get the: Models, Views and Controllers folders.

New Project structure

Also we get a Test Project in the solution. So how do we test a controller, how do we go about in isolating this 'unit' (the controller), so we can really 'unit test' it?

Interface for DataSource
I want to really decouple the controller so I can test only the functionality provided by the controller.

It needs to be possible to switch the real model for a 'test' or 'mock' version, this apllies also to the view. It also must be possible for the view to be 'mocked' like that.  

What I want is a to show a page containing AuditHistory. So I started to create an Interface that defines the DataSource (IAuditHistoryDataSource).

   1:  using System;
   2:  using System.Collections.Generic;
   3:   
   4:  namespace MvcApplication.AuditInfo
   5:  {
   6:      public interface IAuditHistoryDataSource
   7:      {
   8:          List<AuditHistory> GetAuditHistoryData();
   9:          List<AuditHistory> GetAuditHistoryDataByUserName(string userName);
  10:      }
  11:  }
Code listing 1: 'IAuditHistoryDataSource'

For the applications data I used LINQ to SQL, that allows me to select the database and with the click of a button generating the code to get the data from my database. Of course you can use whatever datasource you want, LINQ to Entities, LINQ to AD, plain old Datasets, ORM created datasources, NHibernate etc.

The name of the LINQ to SQL class is AuditDataContext:

LINQ to SQL Datamodel

The Model gets a private read-only IAuditHistoryDataSource property that is instantiated with a new instance of AuditDataContext when the setter is called while the private variable _DataSource is null.
Using the 'Inversion of Control' or 'Dependency Injection' pattern (which actually is nothing more than paramaterizing the constructor with the object you want the caller to be responsible for). The Model contains only code that calls methods on this IAuditHistoryDataSource Datasource.

   1:  using System;
   2:  using System.Collections.Generic;
   3:   
   4:  using MvcApplication.Data.AuditHistory;
   5:   
   6:  namespace MvcApplication.AuditInfo.Models
   7:  {
   8:      public class AuditDataModel
   9:      {
  10:          private IAuditHistoryDataSource _DataSource;
  11:          private IAuditHistoryDataSource DataSource
  12:          {
  13:              get 
  14:              { 
  15:                  if (_DataSource == null)
  16:                  {
  17:                      _DataSource = new AuditDataContext();
  18:                  }
  19:                  return _DataSource;
  20:              }
  21:          }
  22:   
  23:          /// <summary>
  24:          /// Constructs an instance of AuditDataModel inversing control of the datasource to the caller
  25:          /// </summary>
  26:          /// <param name="dataSource"></param>
  27:          public AuditDataModel(IAuditHistoryDataSource dataSource)
  28:          {
  29:              _DataSource = dataSource;
  30:          }
  31:   
  32:          /// <summary>
  33:          ///  Gets all AuditItems (by calling a method on the IAuditHistoryDataSource)
  34:          /// </summary>
  35:          /// <returns></returns>
  36:          public List<AuditHistory> GetAuditHistoryData()
  37:          {
  38:              return DataSource.GetAuditHistoryData();
  39:          }
  40:   
  41:          /// <summary>
  42:          ///  Gets all AuditItems belonging to a particular User with UserName equal 
  43:          ///  to parameter (by calling a method on the IAuditHistoryDataSource)
  44:          /// </summary>
  45:          /// <param name="userName"></param>
  46:          /// <returns></returns>
  47:          public List<AuditHistory> GetAuditHistoryDataByUserName(string userName)
  48:          {
  49:              return DataSource.GetAuditHistoryDataByUserName(userName);
  50:          }
  51:      }
  52:  }
Code listing 2

Using this technique it is now easy to mock the datasource for test purposes. Doing TDD we first write our test, than we write code. To keep this post understandable I choose to write it the other way around. I do not want to bore you with all my mistakes and refactorings, but provide the working solution.
Next I will list the Controller, which like the Model, uses the 'Inversion of Control' or 'Dependency Injection' pattern and takes a IAuditHistoryDataSource as a parameter in its constructor. The Controller than passes this dataSource to the constructor of the Model it uses.

   1:  using System;
   2:  using System.Web;
   3:  using System.Web.Mvc;
   4:  using System.Collections.Generic;
   5:   
   6:  using MvcApplication.Data.AuditHistory;
   7:  using MvcApplication.AuditInfo.Models;
   8:      
   9:  namespace MvcApplication.AuditInfo.Controllers
  10:  {
  11:   
  12:      public class AuditingController : Controller
  13:      {
  14:          private AuditDataModel AuditData;
  15:   
  16:          public AuditingController()
  17:          {
  18:              AuditData = new AuditDataModel();
  19:          }
  20:   
  21:          public AuditingController(IAuditHistoryDataSource dataSource)
  22:          {
  23:              AuditData = new AuditDataModel(dataSource);
  24:          }
  25:   
  26:          [ControllerAction]
  27:          public void Index()
  28:          {
  29:              List<AuditHistory> auditHistory = AuditData.GetAuditHistoryData();
  30:              ViewData.Add("AuditHistoryAll", auditHistory);
  31:              RenderView("List", auditHistory);
  32:          }
  33:   
  34:          [ControllerAction]
  35:          public void List(string id)
  36:          {
  37:              List<AuditHistory> auditHistory = AuditData.GetAuditHistoryDataByUserName(id);
  38:              ViewData.Add("AuditHistoryByUserName", auditHistory);
  39:              RenderView("List", auditHistory);
  40:          }
  41:      }
  42:  }
Code listing 3

As you can see the MVC Framework uses attributes to define Actions (ControllerAction). The Framework uses these so the right Action (method) is mapped to a url.
Scott Guthrie wrote a couple of blogposts on the subject. He wrote a series of 4 posts, this is part 1: http://weblogs.asp.net/scottgu/archive/2007/11/13/asp-net-mvc-framework-part-1.aspx

Tests
I want to write tests against the Controller, To do this, first I have to find a way to override the part where the view gets rendered. We do not want to render the view, we want to test if the controller gets the data and passes it to the (right) view.  In the Test project we create a AuditingControllerMock which inherits from the Controller we want to test. In the AuditingControllerMock we override the RenderView method and the only thing we do in it is get the viewName passed in through a parameter and assign it to a property: 'RenderViewAction'.

   1:  using MvcApplication.AuditInfo.Controllers;
   2:  using MvcApplication.Data.AuditHistory;
   3:   
   4:  namespace MvcApplication.AuditInfo.Test
   5:  {
   6:      public class AuditingControllerMock: AuditingController
   7:      {
   8:          public string RenderViewAction { get; set; }
   9:   
  10:          public AuditingControllerMock(IAuditHistoryDataSource dataSource):base(dataSource)
  11:          {
  12:          }
  13:   
  14:          protected override void RenderView(string viewName, string masterName, object viewData)
  15:          {
  16:              RenderViewAction = viewName;
  17:          }
  18:      }
  19:  }
Code listing 4

In the actual Test project I decided to use Rhino Mocks, because it helps me mock the DataSource in just a few lines of code.

   1:  using System.Collections.Generic;
   2:  using Microsoft.VisualStudio.TestTools.UnitTesting;
   3:   
   4:  using Rhino.Mocks;
   5:   
   6:  using MvcApplication.Data.AuditHistory;
   7:  using System;
   8:   
   9:  namespace MvcApplication.AuditInfo.Test.Controllers
  10:  {
  11:      
  12:      /// <summary>
  13:      ///  This is a test class for AuditingControllerTest and is intended
  14:      ///  to contain all AuditingControllerTest Unit Tests
  15:      ///</summary>
  16:      [TestClass()]
  17:      public class AuditingControllerTest
  18:      {
  19:          /// <summary>
  20:          ///A test for Index, needs to return all items in list
  21:          ///</summary>
  22:          [TestMethod()]
  23:          public void AuditingController_Get_All_AuditHistory_items_IndexTest()
  24:          {
  25:              MockRepository mocks = new MockRepository();
  26:   
  27:              IAuditHistoryDataSource mockDataSource = mocks.CreateMock<IAuditHistoryDataSource>();
  28:              List<AuditHistory> auditHistoryList = GetBaseTestList();
  29:   
  30:              AuditingControllerMock controller = new AuditingControllerMock(mockDataSource);
  31:              Expect.Call(mockDataSource.GetAuditHistoryData()).Return(auditHistoryList);
  32:   
  33:              mocks.ReplayAll();
  34:              controller.Index();
  35:              mocks.VerifyAll();
  36:   
  37:              Assert.IsNotNull(controller.ViewData["AuditHistoryAll"], "Controller AuditHistoryAll returned null");
  38:              Assert.IsTrue(((List<AuditHistory>)controller.ViewData["AuditHistoryAll"]).Count > 0, 
  39:                              "AuditHistoryAll did not return expected number of items AuditHistory Count is not greater than 0");
  40:   
  41:          }
  42:          
  43:          /// <summary>
  44:          ///A test for List(userName), returns all AuditHistory belonging to a particular user
  45:          ///</summary>
  46:          [TestMethod()]
  47:          public void AuditingController_Get_AuditHistory_By_UserName_ListTest()
  48:          {
  49:              MockRepository mocks = new MockRepository();
  50:              
  51:              IAuditHistoryDataSource mockDataSource = mocks.CreateMock<IAuditHistoryDataSource>();
  52:              List<AuditHistory> auditHistoryList = GetBaseTestList();
  53:   
  54:              AuditingControllerMock controller = new AuditingControllerMock(mockDataSource);
  55:              Expect.Call(mockDataSource.GetAuditHistoryDataByUserName(UserNameToTest)).Return(auditHistoryList);
  56:   
  57:              mocks.ReplayAll();
  58:              controller.List(UserNameToTest);
  59:              mocks.VerifyAll();
  60:   
  61:              Assert.IsNotNull(controller.ViewData["AuditHistoryByUserName"], "Controller AuditHistoryByUserName returned null");
  62:              Assert.IsTrue(((List<AuditHistory>)controller.ViewData["AuditHistoryByUserName"]).Count > 0, 
  63:                              "AuditHistoryByUserName did not return expected number of items AuditHistory Count is not greater than 0");
  64:          }
  65:   
  66:          
  67:          private Guid UserIDToTest = new Guid("aa6d5659-fd41-44f1-b838-8c88b0b753e6");
  68:          private Guid ObjectIDToTest = new Guid("1b884382-d51a-4b42-a1f0-d1d1b1adc864");
  69:          private int ObjectTypeToTest = 1;
  70:          private string UserNameToTest = "Bill";
  71:   
  72:          private List<AuditHistory> GetBaseTestList()
  73:          {
  74:              List<AuditHistory> auditHistoryList = new List<AuditHistory>
  75:              {
  76:                  GetAuditHistory(UserNameToTest,
  77:                                   UserIDToTest,
  78:                                   "Test operation",
  79:                                   ObjectTypeToTest,
  80:                                   ObjectIDToTest,
  81:                                   DateTime.Now,
  82:                                   "Audit data to test"),
  83:                  GetAuditHistory(UserNameToTest,
  84:                                   UserIDToTest,
  85:                                   "Test operation 2",
  86:                                   ObjectTypeToTest,
  87:                                   ObjectIDToTest,
  88:                                   DateTime.Now,
  89:                                   "Audit data 2 to test"),
  90:                  GetAuditHistory(UserNameToTest,
  91:                                   UserIDToTest,
  92:                                   "Test operation 3",
  93:                                   ObjectTypeToTest,
  94:                                   ObjectIDToTest,
  95:                                   DateTime.Now,
  96:                                   "Audit data 3 to test")
  97:              };
  98:              return auditHistoryList;
  99:          }
 100:   
 101:          private AuditHistory GetAuditHistory(string userName,
 102:                                               Guid userId,
 103:                                               string operation,
 104:                                               int objectType,
 105:                                               Guid objectId,
 106:                                               DateTime modifiedOn,
 107:                                               string auditData)
 108:          {
 109:              AuditHistory audit = new AuditHistory();
 110:              audit.AuditData = auditData;
 111:              audit.AuditID = Guid.NewGuid();
 112:              audit.ModifiedOn = modifiedOn;
 113:              audit.ObjectId = objectId;
 114:              audit.ObjectType = objectType;
 115:              audit.Operation = operation;
 116:              audit.UserId = userId;
 117:              audit.UserName = userName;
 118:   
 119:              return audit;
 120:          }
 121:      }
 122:  }
Code listing 5

In both tests I create a Mock of the Datasource by passing the IAuditHistoryDataSource to the CreateMock method of Rhino Mocks. I assign a filled List of Type AuditHistory to the variable auditHistoryList with the following line:

   52:  List auditHistoryList = GetBaseTestList(); 
Code listing 6

Next I tell Rhino Mock what method it needs to expect to be called and what that method must return, with the line:

   55:  Expect.Call(mockDataSource.GetAuditHistoryDataByUserName(UserNameToTest)).Return(auditHistoryList); 
Code listing 7

With the next three lines we tell Rhino Mocks it needs to pay attention(line 1. In line 2 we call the ControllerAction 'List' on our Controller. In line 3 Rhino Mocks Verifies if all our assertions are being met:

   57:  mocks.ReplayAll();
   58:  controller.List(UserNameToTest);
   59:  mocks.VerifyAll();
Code listing 8

After that I check if the returned data in the View is not null and if the number of items in the List of type AuditHistory is greater than 0.

My conclusion is that the testability indeed is lots better with the MVC Framework. There is a learning curve, it seemed a bit strange to use the 'classic ASP' way of 'spagetthi coding' in the html, but the separation of concerns is really a big advantage, that not only provides better testing but also better maintainable code.
If the server controls are obsolete now is too much to say, but teams that will use this Framework are going to have to learn another way of working and cannot use the server controls we got used to.
I really want to try out the MVC Toolkit, which provides UIHelpers and otherstuff that is usefull when using the MVC Framework, I did not get the change to work with it, but when I do I hope to post about it here.

MVC Framework links:
http://www.codeplex.com/MVCContrib 
ASP.NET Forum on MVC Framework 

Henry Cordes
My thoughts exactly...