Can Visual Studio 2012 run unit tests in parallel? Visual Studio 2010 has an option to do this:
…but I can’t find anything similar in Visual Studio 2012. I tried the procedure described in the referenced article, but even loading the same test settings file I was unable to run tests in parallel.
No. VS2012 unit test framework currently does not run tests in parallel.
Edit: Moving a part of the comments with Dave into the answer for better reference.
See this link on how to enable parallel runs using the .testsettings. Once you have this configured in your .testsettings file you can then set that as the active settings file in VS and this which will force the execution in the legacy mstest framework, where this feature is available.