TFS 2010 is trying to run MsTest 2010 project under MSTest 2008

I've got a CI build set up to build my solution and run my unit tests. The solution is VS 2010. My test project targets the 4.0 framework. And the 10.0 version of the Unit Test Framework is properly referenced. If I run the tests locally in VS 2010, I have no issues. However, when I run my CI build on the TFS server (which is TFS 2010), I get an error stating:

File not found: C:\Program Files\Microsoft Visual Studio 9.0\Common7\IDE\MSTest.exe

This is the MSTest for VS 2008, and it's not installed on my TFS server. I do have VS 2010 installed on my TFS server including the testing tools but TFS doesn't look for it.

My quest开发者_运维知识库ion: Why would TFS be attempting to use this version of MSTest to run the tests? I can't find this path specified anywhere in any project, solution, or configuration on the server.

The solution and related projects began life as VS 2008 projects and were migrated to VS 2010. These files were pulled into a fresh install of TFS 2010 and a new TFS project. They were not migrated from a 2008 TFS server.

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Thanks!

Just a follow-up on this because I eventually discovered what was causing my issue and it was not the answer given above. We were referencing a third party assertion utility kind of like "Should" called "SoftwareApproach.TestingExtensions" in this project. This dll was an older one and contained a reference to MSTest 9 (from VS 2008). Because this dll referenced MSTest 9, it was causing this error on the build server, however, the test would run locally. Frankly, not sure why it didn't complain locally as there was no binding redirect and VS 2008 is not installed.

However, updating to a build of the mentioned dll that instead referenced MSTest 10 resolved our issue on the build server.

From looking at the logs, the problem is that MSTest is running here using the wrong version because you have a legacy assembly reference.

Make sure your unit test project and any other projects being executed for test have the correct assembly reference to the new mstest assembly. I am guessing you either missed a reference or added in the new reference and forgot to remove the legacy one.

"I can't find this path specified anywhere in any project, solution, or configuration on the server."

Yeah, you wouldn't see the path anywhere- it will just exec based on what assembly is referenced into the unit test proj.