The recently released, Visual Studio Unit Test Generator includes support for multiple test framework and enables you to unit test applications directly from within Visual Studio 2012 and 2013.

Microsoft has introduced a lightweight and portable test runner for its MSTest unit testing framework.

The MSTest SDK is intended to improve the .NET unit testing experience through better defaults, simpler usage, and easier extensibility.

Let me be clear about the new .NET Core testing framework, xUnit: It's an alternative, not a replacement for MSTest, the .NET Core version of the framework you're familiar with from earlier versions ...