Saturday, April 29, 2006

csUnit 2.1.1 BETA released

Another beta release of csUnit 2.1 is available at csUnit's web site. Remember, version 2.1 is the first csUnit version that supports .NET 2.0 and Visual Studio 2005. For this beta version we focused on two major areas:
  • Addin for Visual Studio
  • Performance Engineering
The addin for Visual Studio is available again with a similar feature set as in previous versions. After adding a reference to csUnit to your project you will have two additional entries in your context menu for the project: VS2005 Context Menu On the performance side, we decided that we wanted to measure and reveal the amount of overhead csUnit adds to your unit tests. csUnit is the first unit testing tool, which provides that feature. We used dotTrace by JetBrains and Microsoft's CLRProfiler to improve overall performance. Our data shows that we have been able to reduce the overhead caused by csUnitRunner, the standalone GUI application to about 1 second per 100 tests. Compared to almost 10 seconds in the past, this is a significant improvement and saves valuable development time. Concurrently we have also started to talk to different tool vendors, some of them already providing support for csUnit. The idea is to make sure that csUnit provides for the best possible integration in order to help increasing your productivity.

Friday, March 31, 2006

csUnit 2.1.0 BETA Released

Finally a .NET 2.0 compatible version of csUnit is available. Although it doesn't have an addin for Visual Studio 2005 yet, it's still worthwhile to take a look. For instance: Did you ever wish you had a setup or teardown method for all your tests in one assembly? Then try this: [TestAssemblyFixture] public class TestData { [SetUp] public void CreateInMemoryDB() { //... } [TearDown] public void CleanupInMemoryDB() { //... } private InMemoryDB _database = null; } This is a just an example for illustration purposes. Don't send me a message asking for my code for the InMemoryDB class. I don't have it! As for csUnit 2.1.0 BETA, you can find it at http://www.csunit.org/download.

Saturday, February 18, 2006

csUnit 2.0.1 released

Finally we got another release of csUnit finished (see version 2.0.1 on csUnit's web site). It took a while but there were many requests in do so. Although we don't have support for VS.NET 2005 yet, we plan to have that ready by end of March 2006. The new release offers a few enhancements, e.g. categories for tests and imcreased flexibility in the user interface for selecting which tests to run. Next we'll focus on:
  • updating the collaterals for version 2.0.1
  • then version 2.1, which will add support for VS.NET 2005

Thursday, January 19, 2006

Determining Name And Path Of Output File in VS.NET 2005 Automation

When implementing an extension, e.g. an addin for VS, you may want to determine the path (location) and name of the assembly that is being built as part of a project. One way would be to read the project file, e.g. *.csproj. As it happens to be an XML file it is easy to determine the correct node. A different approach though is using the Project automation object. Project has a set of properties and for C#/VB.NET/J# projects it contains a property named "OutputFileName". The value of that property is the assembly name. Next, you need to determine the path. First you need to know the path to the project, which you can determine using the directory part of Project.FileName. This gives you the location of the project file. In order to determine the output path for the assembly, you need the active configuration for the project, which you obtain using Project.ConfigurationManager.ActiveConfiguration. The ActiveConfiguration object has a property named "OutputPath", which is the relative path from the project file to the output folder. One might be tempted to use ActiveConfiguration.OutputGroups. For that to work the project needs to have been built successfully once, which might not always be the case. Furthermore, Configuration.OutputGroups doesn't work in a handler for the solutions event Opened. Therefore I settled on the following code for determining the path and the name of the target assembly:
string GetOutputPathAndFile(Project p) {
   string outputPath;
   string outputFileName;
   string outputPathAndFile;
   string projectLocation;
   try {
      Configuration activeConf = p.ConfigurationManager.ActiveConfiguration;
      projectLocation = (new FileInfo(p.FileName)).DirectoryName;
      outputFileName = p.Properties.Item("OutputFileName").Value.ToString();
      outputPath = activeConf.Properties.Item("OutputPath").Value.ToString();
      outputPath = Path.Combine(projectLocation, outputPath);
      outputPathAndFile = Path.Combine(outputPath, outputFileName);
   }
   catch(Exception ex) {
      System.Diagnostics.Debug.WriteLine(ex.Message);
   }
   return outputPathAndFile;
}
If you are aware of a better solution, please don't hesitate to comment! I'm eager to learn.

Saturday, January 14, 2006

Update: User Control in Tool Window of a Visual Studio Addin

After some more experimentation it seems that the last parameter of CreateToolWindow2() is null, if the hosted control is in a separate assembly / project. For instance: Suppose you have a solution containing two projects, let's call them MyAddIn and MyControls. The first one is your add-in itself and the second one contains some controls you want to have in a separate assembly as you want to use them also for other solutions, e.g. a stand-alone application. Now, if you have a UserControl in the project MyControls, let's call it MyUserControl1, then you can still host that control in your add-in. However, in this case the method CreateToolWindow2() returns null as the value of the last parameter. If on the other hand you add a UserControl, let's call it MyUserControl2, to the add-in project 'MyAddIn', and then host MyUserControl2 in the add-in, the last parameter of CreateToolWindow2() will contain a reference to your MyUserControl2 instance. Of course MyUserControl2 can in turn contain one or more instances of MyUserControl1. Strange that whether or not a UserControl is contained in the add-in assembly/project or not makes a difference regarding the last parameter of CreateToolWindow2(). Am I missing something?

Wednesday, January 04, 2006

The invoked member is not supported in a dynamic assembly - Reprise

Here is another workaround for the issue with the form designer: In some cases it is sufficient to just close and re-open the solution and/or Visual Studio. From my perspective this indicates a bug in the IDE. So it's back to Microsoft.

Thursday, December 29, 2005

The invoked member is not supported in a dynamic assembly.

You might encounter another issue with the forms designer in Visual Studio 2005. When you have located a user control on the form, and the user control is in a different project, and the user control uses GetExportedTypes() to determine visible types, then you might receive the following error message when trying to view the form:
The invoked member is not supported in a dynamic assembly.
The error message is typically accompanied with a stack dump including information about the line of code which causes the problem. In order to solve the issue you need to find a different way of coding. In my case I had to use GetTypes() instead of GetExportedTypes(). After that change the form designer worked again as expected.

Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information.

Sometimes when working with a solution containing multiple projects, with several forms some of them containing user controls, Visual Studio .NET 2005 produces the following error when you try to open the form in the form designer:
Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information.
In some cases the following approach helps solving this issue:
  1. Close the form designer
  2. Close the solution and Visual Studio
  3. From the project that contains the problematic form delete the bin and the obj folder
  4. Start Visual Studio again and load your solution
  5. Rebuild the solution
  6. Reload the form
Not nice, but at least it's a workaround. I don't know yet how to reproduce the issue, but it seems to be related to user controls in one project which are used in a form in a different project.

Wednesday, December 28, 2005

User Control in Tool Window of a Visual Studio Addin

Visual Studio .NET 2005 offers some new APIs for making it easier to host a managed add-in. For instance, the function CreateToolWindow2() allows hosting a custom control within a tool window. A shim control is no longer necessary. The function call might look like this:
_toolWindow = toolWins.CreateToolWindow2(
   _addInInstance,
   asmPath,
   ctlProgId,
   "AgileTest",
   guidString,
   ref objTemp);
The documentation states that the objTemp parameter will contain a reference to the user control hosted in the new tool window. With my experiments so far I have never found that variable to be anything other than null. In order to get a reference to my hosted user control I therefore used a different approach. First I defined an event on the class level for the user control like this:
public static event EventHandler ControlCreated;

private void AgileTestHostCtrl_Load(object sender, EventArgs e) {
   if(ControlCreated != null) {
      ControlCreated(this, null);
   }
}
For this event I defined an event handler in the Connect class of the add-in:
void AgileTestCtrl_ControlCreated(object sender, EventArgs e) {
   _hostedControl = (AgileTestCtrl)sender;
}
Registering the handler on a class level event is easy:
AgileTestCtrls.AgileTestCtrl.ControlCreated += 
   new EventHandler(AgileTestCtrl_ControlCreated);
Now when the user control is loaded the event is fired, and the event handler is called. The limitation of this solution is obviously that should you need several instances of the same tool window it might get more complicated to distinguish between them. One option to solve this might be to use an event that carries additional information in its properties. In my case as I don't need more than one instance of the tool window and hence of my user control, this solution works fine and reliable. Please drop me a note if you are aware of a better solution. Thank you!

Wednesday, December 21, 2005

This is about DotNet

This blog is about DotNet. I'm a founding member of the csUnit team. In this blog I'd like to focus on general and special .NET 2.0 questions. Feedback is most certainly welcome!