How do you separate unit tests from integration tests in Visual Studio?

Question

I've been using Visual Studio 2008 Test projects to store my tests. Lately I've realized that a lot of my unit tests are in fact integration tests because they rely on external sources (e.g. file system, SQL server, registry).

My question is, what is a good approach to separating out integration tests from unit tests?

Ideally I want only the unit tests to show up in the Test View, because I run them frequently during development. The integration tests OTOH I don't want in the Test View because I will only run them infrequently, e.g. when I'm about to make a build drop.

Answer 1

I put them in a separate project named IntegrationTests or something similar.

EDIT:

With Test View you can create lists & filter them:

http://msdn.microsoft.com/en-us/library/ms182452.aspx

And then run them:

http://msdn.microsoft.com/en-us/library/ms182470.aspx

Answer 2

Keep them in separate projects, and keep the integration testing projects out of your day-to-day Visual Studio solutions.

When you wish to run the integration tests, you can use a different solution that includes them. If you don't want to wait for a second instance of VS to load, you can run them from the command-line.