I've just tried using NCrunch for the first time. My project currently builds and passes all unit tests from Visual Studio.

However, when NCrunch runs the tests I get many test failures due to deployment items not being deployed.

It appears that MSTest DeploymentItem is supported. However I wonder if it could be because of the environment variable I use.

[DeploymentItem(@"%LABDIR%\Microsoft.Activities.Extensions\Microsoft.Activities.Extensions.Tests\ServiceExtensionTest.xamlx")]

I use the %LABDIR% variable because DeploymentItem uses either a full path or relative to the solution file path. But in my case, this test file is included in multiple solution files so I can't use a relative path. I use the %LABDIR% variable to make sure the deployment item is found regardless of the solution path.

Could that be the issue?

Here is my workaround

#if NCRUNCH
/// <summary>
/// The Lab directory
/// </summary>
/// <remarks>
/// NCrunch does not expand environment variables
/// </remarks>
internal const string Labdir = @"D:\wf.codeplex.com\src\wf\labs";
#else
/// <summary>
/// The test projects folder.
/// </summary>
internal const string Labdir = "%LABDIR%";
#endif

For anyone interested, NCrunch 1.41b has just been released including a fix for the above issue. NCrunch should now automatically resolve and handle deployment items making use of environment variables.