One of the biggest challenges I’ve had in doing TDD with VSTS using the native unit testing tools is how darn slow it is to get to the Red or Green bar. I recently sent out an internal email to get some feedback on what teams like or dislike about TDD in VSTS, and instead got a reply from Naysawn Naderi, the PM for Visual Studion Enterprise Test, pointing to his blog entry on new Unit Testing features in Orcas, including the focus that they are making to improve the TDD story in VSTS.