Problems with Microsoft.VisualStudio.QualityTools.UnitTestFramework.dll
I have been having problems with the internal testing library in Visual Studio. I get an API error. “The assembly has already been loaded and cannot be loaded into the appDomain.”
Really? <sarcastic response>
Everyone on the team has had intermittent issues for a couple months. One solution seemed to be to clean the solution, close VS, reload VS, open your solution, load the Test View (View -> Tool Bars -> Testing, find the “Test View” icon and click on it). Once the Test View loaded up the assemblies the issue might not appear. Obviously that isn’t an ideal solution.
I tried going through each project, removing any references to the lib, clean, rebuild solution (obviously a failure), then re-add the reference for each missing assembly. That worked once and only once.
My latest effort was to go through each project file and manually edit the reference. I removed the processorArchitecture=MSIL attribute from each entry. I loaded up my solution in VS and went through the usual Test View steps. So far, it works.
Maybe this problem is worse on x64 systems. Our team lead was running Win2008 x64 for months and always struggled with this issue. When I was on WinXP the issue was a minor annoyance that would pop up once a week or so. I switched to Win7 x64 a couple weeks ago and the issue has been a constant irritant ever since.
Hmm…
