Pages

Subscribe Twitter

Monday, 8 April 2013

How to use NUnit Assert functionality in MS Tests

Today I realised that I'd forgotten how spoilt I am using Resharper and dotCover to run my unit tests. Put another way I'd forgotten how badly Visual Studio plays with any other unit test frameworks other than MS Test! I'm used to and really like the fluent API style of NUnit's Assert.That(...) syntax so having to fall back to MS Test always feels like a step back. If you ever find yourself in a situation where you can only run MS Tests, but want to use NUnit functionality you can easily do this just by using aliases on the NUnit "using" statements.

The following "using" code block facilitates this - you will be able to decorate your unit test classes with MS Test attributes so they can be picked up and run by Visual Studio whilst using NUnit functionality.

using Microsoft.VisualStudio.TestTools.UnitTesting;
 
using Assert = NUnit.Framework.Assert;
using Is = NUnit.Framework.Is;

Wednesday, 2 January 2013

MVC2 is not supported in Visual Studio 2012

The title pretty much says it all, there is no way to open an MVC2 project within Visual Studio 2012, there is no "auto upgrade" path either! If you attempt to convert a solution containing an MVC2 project you will probably see the following error message:

Subtype: '{F85E285D-A4E0-4152-9332-AB1D724D3325}' is unsupported by this installation.

If you do, then the only real solution appears to be graft the existing MVC2 project into an empty MVC3 or MVC4 project and update references accordingly - bit of a chore no matter what approach you choose / prefer.

Monday, 31 December 2012

Looking forward to 2013

First and foremost, the biggest change in 2013 is that I will be responsible for and managing the development team. To help the team with the challenges we will face in 2013 I will need to stay hand on too, so that should make time management critical just to make sure I can personally fit it all in. This will probably be the biggest challenge I have faced in the last few years and something that I'm looking forward to getting started with.

Another change for 2013 will be refining our agile process. For the 2nd half of 2012 we followed a scrum methodology, successfully developing and deploying an MVC replacement for an old ASP legacy application. Feedback from the technical teams resulted in us modifying the process, removing task hour estimation from the sprint planning session with no measurable negative effect. Additional feedback from the business indicated that sprints were causing some friction when defining stories and planning releases. The 6-9 month development cycles of waterfall just don't work for most software applications, but at the same time, the artificial barriers that an 'x' week sprint causes can confuse the business. As we'd come to similar conclusions in my previous role, we are going to try to develop a "Kanban" methodology that will work for us.

  • We want to keep the short and frequent feedback loops and engagement with the business.
  • We also want to keep most stories as small as they can possibly be (days rather than weeks), but for some functionality we just don't want to be forced to break up a story just to make it fit within a sprint (but I must stress that we hope these to be the exception, otherwise it is just waterfall by the back door).
  • We also want to look into releasing at the end of every story so the business can get the value of development work as quickly as possible.

To help the business adjust to the harsh economic climate that we still face, the biggest challenge is going to be making sure that every single bit of effort really counts! This really does include everything, we need to improve the deployment process of all our application suite, making sure we really can live continuous integration / deployment. All development work needs to address both existing bugs / performance issues whilst providing much needed new functionality. As a part of this we should get the chance to learn Puppet, refine our TeamCity skills, potentially look at a DVCS and most importantly have fun developing!

Review of 2012

2012 has been a full-on year with lots of change. I started the year in my previous role, preparing for a transition into a newly created role of "Solution Architect"; moving away from both day to day coding and purely concentrating on .NET applications / systems. It sounded a really interesting challenge but another opportunity presented itself working for my current company in another newly created role of "Technical Team Lead". It was a hands-on development role, leading a team of 3 developers bringing a large business critical application in-house and helping to roll out scrum and other processes (such as TDD/BDD, Continuous Integration, etc.) to the business and team.

The very first challenge was the knowledge transfer sessions for the "out-sourced" application, which had been designed and developed by one company and then the maintenance passed onto a second company. It's probably fair to say that the code has grown organically rather than being designed and has undergone several architectural changes without completing or replacing the previous model(s). As a result it contains both direct SQL access via ADO.NET and at least 2 different ORM implementations. Many other areas of the code based might contain a mixture of design patterns alongside some large "procedural based" class methods. There were no automated tests of any form, and most documentation had either been lost or was now hopelessly out of date! Having just had the opportunity of working in a completely green field system in my last role, getting the chance to apply that knowledge in a large, deployed, business critical brownfield system seemed like a nice challenge (I have spent much time wondering if I was mad!)

With such an interestingly complex system we had our most success videoing the hand over sessions, recording what didn't work as much as what did work as this both gave us the instant knowledge and the ability to go back after the event to refresh our memories. This also meant that those sessions are available as a record for new members joining the team. The very first win was the ability to deploy and develop all aspects of the system locally, with instruction guides that could be followed by the entire team and worked every time on every machine (no small achievement!). We are now preparing for the production deployment of our first "in-house" developed release of this application including a few small pieces of new functionality but mostly containing massively increased logging to help track down issues reported by the business in the production environment.

As well as taking over responsibility for the main application code base, we have replaced an existing ASP system with an MVC application developed in sprints using Scrum, TDD and TeamCity Continuous Integration - a massive learning curve for the team which they handled extremely well. This system has had two functionality deployments so far, with a third currently in test. This is a big improvement over the current norm of deployments every 3 or 6 months but there is still a little way to go before we can look to release at least every sprint.

I think that on the whole the team can be really happy as we have accomplished everything that was promised in 2012, just not necessarily everything that was hoped for - but we have to leave something to improve upon in 2013!

Thursday, 13 December 2012

VS2012 does not support Silverlight 3.0

Not sure that this post really needs anything more than the title. If you are upgrading a Silverlight project from VS2008 or VS2010 be aware that VS2012 only supports versions 4 & 5 of Silverlight. If you need to update the solution / projects to use them in VS2012 I'd recommend upgrading to at least Silverlight 4 first in your existing Visual Studio and then once it's working upgrade the solution/projects to VS2012 so you're only tackling one set of issues at a time.

Saturday, 8 December 2012

Upgrading a TeamCity build from VS2008 to VS2012 and using NuGet

We've recently upgraded to Visual Studio 2012 from VS2008 and switched over to using NuGet rather than direct project references for our third party tools. Everything worked as planned until we checked the solution into source control and the personal build for TeamCity kicked off. Almost straight away the build fell over with the following error message:

D:\TeamCity\buildAgent\work\e6ae794aab32547b\.nuget\nuget.targets(102, 9):
error MSB4067: The element <ParameterGroup> beneath
element <UsingTask> is unrecognized.
Project BJ.Core.sln failed.

Our projects were still targeting .NET 3.5 but to fix the problem we needed to update the visual studio version in the build configuration

Note: we were are using Visual Studio 2012, but our Team City server is currently hosted on a 2003 Server O/S instance so we must select the VS2010 option in our build configuration (VS2012 option only works on 2008 Server and higher due to .NET 4.5 limitation).

Can't target .NET 3.5 after upgrading a Visual Studio 2008 solution to 2012

I ran into an interesting problem today when upgrading a visual studio 2008 project to visual studio 2012, whilst trying to leave the targeted framework to .NET 3.5. Each time I tried to open the solution all my test projects automatically upgraded to .NET 4.0 regardless of what I did. It was impossible to downgrade the project using either the project property page or manually editing the project file. I'd make the change and then reload the project, a project conversion report would be shown and the project was back to targeting 4.0 again.

After a little more digging around I noticed that it was only my test projects that were doing this, all the other class libraries, etc. were perfectly happy targeting 3.5. After a little more experimentation I isolated this to the project type guids section, if I removed this from the project definition then I could re-target my unit test project at v3.5 and everything was happy. Note: As the linked blog post indicates, you might lose the ability to add new tests directly from the "Add New" menu, but it would appear you can either have one or the other, but not both!